1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
3 * enhancement: ~/ and ~user/ are treated specially in pathnames.
4 Refer to documentation for details.
5 * enhancement: ASDF has been updated to version 2.010.
6 * optimization: mutated closed-over variables that are only accessed by
7 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
8 declared to be DYNAMIC-EXTENT) are stored directly in their containing
9 stack frame, rather than allocating a VALUE-CELL (lp#586103).
10 * optimization: UNWIND-PROTECT cleanup functions are now declared
12 * bug fix: backtracing function with &REST arguments now shows the full
13 argument list. (lp#310173)
14 * bug fix: return types for functions with complex lambda-lists are now
15 derived properly (lp#384892)
16 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
17 long string arguments slowed the compiler down to a crawl.
18 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
19 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
20 in the DEFMETHOD body.
21 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
22 messages, being instead replaced with the corresponding function name.
23 * bug fix: don't derive overly complex unions of numeric types for arithmetic
24 operators. (lp#309448)
26 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
27 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
28 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
29 * enhancement: ALLOCATION-INFORMATION also provides the page the object
31 * enhancement: default dynamic-space size can be configured at build-time
32 without touching source, using the --dynamic-space-size argument to make.sh.
33 * enhancement: DESCRIBE recognizes symbols naming optimization policy
34 qualities, and mentions ALWAYS-BOUND declarations.
35 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
37 * enhancement: ASDF has been updated to 2.009.
38 * enhancement: the system detects known type-erros in calls better,
39 signalling a full warning about violated proclaimed FTYPEs and violations
40 of derived FTYPEs within the same file, including self-calls.
41 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
42 * optimization: constant-folding exploits numeric and character types, in
43 addition member types.
44 * optimization: numeric, character and member types that are inhabited by
45 exactly one value are tested with EQL.
46 * optimization: more conditional branches are eliminated during IR1.
47 Branches are simplified before performing if/if-conversion, and simple
48 equivalent branches (that only read the same constant or variable) are
50 * improvements to the Windows port:
51 ** change: canonical unparsing form for pathname namestrings now uses / as
52 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
53 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
54 on Windows. (thanks to Kalyanov Dmitry)
55 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
57 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
58 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
59 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
60 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
62 * bug fix: interrupts arriving during CL:OPEN caused an error.
63 * bug fix: overeager character buffering could cause input to block
64 spuriously when reading from a pipe (lp#643686)
65 * bug fix: more efficient timer expiry should avoid starvation on systems
66 where number of SIGALRMs per second is restricted. (lp#375515)
67 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
68 * bug fix: compile-times no longer scale linearly with the size of
69 quoted lists in source-code. (lp#654289)
70 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
71 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
73 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
74 an error for eg. STRUCTURE. (lp#458015)
75 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
76 (lp#613871, thanks to Roman Marynchak)
77 * bug fix: more reliable &REST list type derivation. (lp#655203)
78 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
79 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
80 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
81 also declared NOTINLINE. (lp#655581)
82 * bug fix: the compiler could attempt to emit constant left shifts of
83 greater value than n-word-bits. (lp#309063)
84 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
85 type information for the function being set. (lp#659220)
86 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
87 containing self-calls were recompiled with a new signature, and failed
88 to warn when a self-call using the old signature was left in. (lp#655126)
89 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
90 :DEFAULT when the default external had character size other than 8 bits.
92 * bug fix: derived types of functions in the same file were implicitly
93 trusted, leading to potential heap corruption when those function were
94 defined incompatibly. (lp#657499)
95 * bug fix: existing ASDF source registries are ignored when building
97 * bug fix: short-form DEFSETF checks that the second argument is a symbol
98 (lp#655824, thanks to Roman Marynchak)
99 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
100 package-lock violation was detected. (lp#660752)
101 * bug fix: the system can store different docstrings for a single function
102 under different names. (lp#661631, regression from 1.0.29.24)
103 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
104 properly. (lp#384801)
105 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
106 of specified length could confuse the type derivation in unsafe code.
108 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
109 fork with multiple Lisp threads running is made on every platform,
110 not just Darwin. (lp#451111)
111 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
112 around when core was saved, which could cause undefined behaviour when the
114 * bug fix: Allow UNTRACE of functions that are no longer defined
115 (lp#667657, thanks to Attila Lendvai)
116 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
117 compile-time warning (lp#664373, thanks to Stas Boukarev)
119 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
120 * incompatible change: FD-STREAMS no longer participate in the serve-event
121 event-loop by default. (lp#316072)
122 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
123 affects streams from CL:OPEN.
124 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
125 default, but this is liable to change: applications needing serve-event
126 for socket streams should explicitly request it using :SERVE-EVENTS T
128 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
130 * enhancement: CLOS effective method functions and defclass slot typechecking
131 function now have debug names for use in backtraces and profiles.
132 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
134 * enhancement: symbols are printed using fully qualified names in several
135 error and warning messages which are often associated with package
136 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
137 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
138 thanks to Andrew Golding)
139 * bug fix: reading /proc files on Linux works. (lp#425199)
140 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
142 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
143 breaking code that tried to write the value of a printer control variable.
144 (lp#581564, thanks to Stas Boukarev)
145 * bug fix: WRITE compiler macro did not handle output stream designators
146 correctly. (lp#598374, thanks to Stas Boukarev)
147 * bug fix: better availability of names of foreign functions in backtraces
148 on Linux. (lp#626962, thanks to Stas Boukarev)
149 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
150 lp#627581, thanks to Josh Elsasser and Jim Wise)
151 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
152 thanks to Josh Elsasser)
153 * bug fix: using aliases for builtin classes as defmethod specializers
154 without adding DEFTYPEs for them works. (lp#618387)
155 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
157 * bug fix: legally dynamic-extent lists and vectors used as
158 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
159 * bug fix: inline-expansion creating references to dead lambda-variables
160 (lp#454681, thanks to Alexey Dejneka)
161 * bug fix: better error message for bogus numerical arguments to RANDOM.
162 (lp#598986, thanks to Stas Boukarev)
163 * bug fix: the compiler occasionally inlined references from incompatible
164 environments occurs. (lp#308951)
165 * bug fix: the compiler threw an error when trying to compile a local
166 function (labels or flet) known to take a specialized complex argument.
167 (not in launchpad, reported by sykopomp in #lispgames)
168 * bug fix: package-locks failed to protect against compile-time effects of
169 DEFUN when the symbol previously had a macro definition. (lp#576637)
170 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
171 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
172 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
173 * bug fix: evaluation in debugger REPL works using the global context when
174 in frames that do not have sufficient debug information.
175 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
177 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
179 * bug fix: interrupt taking longer than the requested period caused SLEEP
180 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
182 changes in sbcl-1.0.42 relative to sbcl-1.0.41
184 ** Cross-compilation host is now specified to make.sh using
185 command-line argument --xc-host=<command> instead of a positional
186 argument. (thanks to Daniel Herring)
187 ** Install location can be specified to make.sh using command-line
188 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
189 * optimization: The default implementation of
190 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
191 * enhancement: Explicit memory barrier operations are now available for use
192 by multithreaded code. See documentation for details.
193 * enhancement: Experimental support for threading on Linux/PPC.
194 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
195 * bug fix: EXPT signals an error if first argument is a zero and second
196 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
197 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
198 (lp#576594, thanks to Roman Marynchak)
199 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
200 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
202 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
203 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
204 cached, leading to many fewer expensive calls to
205 COMPUTE-APPLICABLE-METHODS.
206 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
207 CLASS argument, search for and call an appropriate optimized ctor function
209 * bug fix: WRITE always returns the correct value.
211 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
212 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
213 * bug fix: Name conflicts between symbols passed as arguments to a single
214 call to IMPORT no longer add multiple symbols with the same name to the
215 package (detectable via DO-SYMBOLS).
216 * bug fix: support building without the dlshim on darwin x86 and x86-64
218 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
220 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
221 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
223 * bug fix: linkage-table entries on PPC now no longer overflow their
224 space allocation (potentially causing crashes if they are written out
226 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
227 platforms, preventing the GC from seeing stale pointers on the control
228 stack in subsequent GCs (which would, and does, break invariants).
229 * bug fix: 32-bit unicode external formats now work on big-endian systems.
230 * bug fix: Literal characters with code points greater than about 32767
231 now work on PPC UNICODE builds.
232 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
233 high order bits are explicitly cleared out. In some contrived situations,
234 this could lead to wrong results in mixed real/complex float arithmetic.
235 * bug fix: Fix function/macro redefinition warnings when building with
236 clisp. (lp#576787, thanks to Josh Elsasser)
237 * new platform: experimental support for ppc/openbsd (thanks to Josh
239 * bug fix: Floating-point traps now work on ppc/linux.
241 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
242 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
243 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
244 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
245 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
246 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
247 SB-THREAD:GRAB-MUTEX.
248 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
249 contain additional data structures and tools for concurrent programming;
250 at the moment it contains a lock-free queue, and a lock-free mailbox
252 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
253 GET-MUTEX but takes &key rather than &optional parameters. Also added
254 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
256 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
257 SB-THREAD:WAIT-ON-SEMAPHORE.
258 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
260 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
261 conditions to defer the deadline for forever.
262 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
264 * enhancement: errors from NO-APPLICABLE-METHOD and
265 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
266 generic function call.
267 * enhancement: SB-BSD-SOCKET improvements
268 ** sockets and socket streams now have a more informative printed
269 representation based on the corresponding SOCKET-NAME and
271 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
273 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
274 CL:CLOSE when appropriate, and no longer disassociates the stream
275 from the socket if close failed. (lp#543951)
276 * improvements to the instrumenting profiler
277 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
278 ** optimization: counters no longer use locks for the overflow mode.
279 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
280 incurred an off-by-one miscount.
281 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
282 * enhancement: improved DEFMETHOD pretty-printing.
283 * enhancement: perform range reduction when arguments are too large for
284 x87's transcendentals (instead of returning 0). (lp#327192)
285 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
286 some of CL-PPCRE's macros. (lp#570079)
287 * enhancement: our machine code is slightly less hostile to valgrind on
289 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
290 to Robert Swindells and Aleksej Saushev)
291 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
292 * bug fix: a rare case of startup-time page table corruption.
293 * bug fix: a semaphore with multiple waiters and some of them unwinding due
294 to timeouts could be left in an inconsistent state.
295 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
296 * bug fix: misoptimization of multiplication by one in
297 (SB-C::FLOAT-ACCURACY 0) policies.
298 * bug fix: miscounts in SB-PROFILE.
299 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
300 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
301 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
302 up itself" (March 2010) for further details.
303 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
304 against length of the list if the element is found before the specified
305 END is reached. (thanks to Alec Berryman, lp#554385)
306 * bug fix: errors signalled during package graph modification no longer
307 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
308 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
309 :SB-DOC feature. (lp#552564)
310 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
311 * bug fix: more robust runtime executable path detection. (lp#375549)
312 * bug fix: GCD always returns positive values. (lp#413680)
313 * bug fix: Converting division to multiplication by reciprocal handles
315 * bug fix: We were too eager in eliding range reduction tests on x87.
316 The maximal magnitude is 2^63, not 2^64.
317 * bug fix: Transforms for TRUNCATE don't die when the result is completely
319 * bug fix: Maybe restore buildability on Alpha.
320 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
322 * bug fix: RANDOM-STATE can be printed readably again.
323 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
324 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
325 types) could result in type mismatches during compilation.
327 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
328 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
329 stack frame thrown from.
330 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
331 compiler optimization qualities inside dynamic extent of its body.
332 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
333 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
335 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
336 constraint propgation, allowing better compilation eg. when used to
337 access structures with WITH-SLOTS. (lp#520366)
338 * optimization: the compiler is now more aware of the type of the underlying
339 storage vector for multidimensional simple arrays resulting in better code
340 for accessing such arrays.
341 * optimization: passing NIL as the environment argument to TYPEP no longer
342 inhibits optimizing it. (lp#309788)
343 * optimization: more efficient register usage when handling single-float
344 arguments on x86-64. (thanks to Lutz Euler)
345 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
346 pre-allocated temporary vectors. (lp#496249)
347 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
348 in :INITIAL-CONTENTS. (lp#523612)
349 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
350 functions. (lp#524707)
351 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
352 WITH-SLOTS usages during compilation.
353 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
354 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
355 all x86oid platforms with :UD2-BREAKPOINTS target feature.
356 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
357 instruction (tested on x86oid linux with ud2-breakpoints).
358 * bug fix: slam.sh now works on win32.
359 * bug fix: better differences of numeric types. (lp#309124)
360 * bug fix: arrays declared intersection and union types can have their
361 upgraded element type derived. (lp#316078)
362 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
363 threads started during profiling. (lp#472499)
364 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
366 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
367 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
368 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
369 values instead of signaling an error. (lp#309093)
370 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
372 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
373 declarations (lp#497321)
374 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
375 and failed to detect circular lists (lp#452008)
376 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
378 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
379 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
380 due to it, so that handlers can run.
381 * bug fix: reparsing undefined types if they have become defined since
383 * bug fix: missing &REST type in a proclamation for a function with both
384 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
385 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
386 expanded calls (lp#542174)
387 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
388 than just at toplevel form.
390 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
391 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
392 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
393 but work on type specifiers.
394 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
395 to name a type specifier.
396 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
397 specifier is valid where "valid" basically means "would be accepted as
398 second argument of TYPEP".
399 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
400 returns the function's declared, or derived FTYPE.
401 * new feature: SB-POSIX now supports accessing the d_ino member of
402 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
403 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
404 provide for seeding a RANDOM-STATE object with user-provided data or
405 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
406 attempt to initialize the returned state from the operating system's
407 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
408 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
409 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
410 * bug fix: Fix grammar and style issues for the docstrings of
411 printer-related variables and functions. (Thanks to mon_key; launchpad
413 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
415 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
416 in a row even though a handler defered the deadline long into the
418 * bug fix: A deadline handler was run without interrupts enabled for a
419 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
420 in infinitely spinning, non-killable threads.
421 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
422 before reaching the erring stack frame.
423 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
424 real power. (launchpad bug lp#525949)
425 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
426 GENCGC platforms. (launchpad bug lp#529014)
427 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
428 (launchpad bug lp#525916)
429 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
430 (Thanks to Robert Goldman)
432 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
433 * optimization: ROUND with a single single-float or double-float argument
434 is properly inlined when possible.
435 * optimization: Slightly better code is generated for integer<->float
436 conversions and for single-float<->double-float conversions on x86-64.
437 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
438 code for 32-bit and 64-bit rotations on x86-64.
439 * bug fix: The install script changes the ownership of directories as well
440 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
441 launchpad bug lp#508485)
442 * bug fix: TRUNCATE with a single single-float or double-float argument is
443 properly inlined when possible. (launchpad bug lp#489388)
444 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
445 no longer causes a compiler error on x86 and ppc.
446 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
447 always relative to *READTABLE* rather than the passed argument.
449 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
450 * minor incompatible change: threading support is now enabled by default
452 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
454 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
455 are now caught and reported just like errors during macroexpansion.
456 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
457 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
458 * enhancement: ASDF systems can now depends on SB-QUEUE.
459 * fixes and improvements related to Unicode and external formats:
460 ** bug fix: error handling and restart usage in the ucs-2 external format
462 ** there is now an implementation of the ucs-4 external format.
463 ** the utf-16 and utf-32 external formats are supported.
464 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
465 in the environment. setenv() and unsetenv() are also provided. (reported by
466 Fare Rideau; launchpad bug lp#460455)
467 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
468 loading. This ensures sensible errors for .FASL files from other
469 implementations on case-insensitive filesystems. (reported by Willem
470 Broekema; launchpad bug lp#489417)
471 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
472 Willem Broekema; launchpad bug lp#489698).
473 * bug fix: some minor code rearrangements to reenable warning-free building
474 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
475 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
477 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
480 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
481 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
482 * improvement: support O_LARGEFILE access to files larger than 2GB on
483 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
484 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
485 definitions for methods specializing on the passed class itself.
486 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
487 definitions for methods specializing on the passed class itself, or on
489 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
490 about itself during the build (e.g. for M-? in Slime), if this flag is
491 enabled in customize-target-features.lisp. This will increase the core
492 size by about 5-6mb, though, so it's mostly interesting to SBCL
494 * new feature: various GENCGC tuning parameters have been experimentally
495 documented and exported from SB-EXT. See documentation for details.
496 * fixes and improvements related to Unicode and external formats:
497 ** the Unicode character database has been upgraded to the
498 Unicode 5.2 standard, giving names and properties to a number of new
499 characters, and providing a few extra characters with case
501 ** improvement: restarts for providing replacement input/output on coding
502 errors for fd-stream external formats.
503 ** improvement: where :<encoding> is a keyword corresponding to an
504 external format the system supports, it is now possible to specify
505 (:<encoding> :replacement <character>) as an external format which will
506 automatically substitute <character> on encoding or decoding errors for
507 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
509 ** improvement: the file streams underlying the standard streams (such as
510 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
511 which uses the replacement mechanism to handle encoding errors,
512 preventing various infinite error chains and unrecoverable I/O
514 ** minor incompatible change: the utf-8 external format now correctly
515 refuses to encode Lisp characters in the surrogate range (char-codes
516 between #xd800 and #xdfff).
517 ** fix a typo preventing conversion of strings into octet vectors
518 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
520 ** fix a bug in the octet multibyte handling of decoding errors and the
521 USE-VALUE restart. (launchpad bug lp#314939)
522 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
523 restart on fd-stream decoding errors.
524 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
525 error is near the end of file.
526 ** fix a double-error case in unibyte octet conversions, when the first
527 use of USE-VALUE is ignored.
528 ** fix bugs in handling of undefined code points in unibyte encodings.
529 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
530 streams after an UNREAD-CHAR.
531 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
532 object is allocated in a boxed region of dynamic space.
533 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
534 fork with multiple Lisp threads running is made, instead of going
535 ahead with unpredictable consequences. (reported by Leslie Polzer)
536 * bug fix: uses of slot accessors on specialized method parameters within
537 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
538 error while finalizing the class. This fix may cause classes with slot
539 accessors to be finalized later than previously. (reported by Lars Rune
540 Nøstdal; launchpad bug lp#473699)
541 * bug fix: restore buildability on the MIPS platform. (regression from
542 1.0.30.38, reported by Samium Gromoff)
543 * bug fix: inspecting closures is less likely to fail with a type error.
544 * bug fix: no timer starvation when setting the system clock back.
545 (launchpad bug lp#460283)
546 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
547 standard pprint dispatch table as specified by CLHS.
548 * bug fix: give CLISP a hint about a type declaration to enable it to build
549 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
551 * bug fix: correctly dump literal objects in defaulting forms of arglists.
552 (reported by Attila Lendvai; launchpad bug lp#310132)
553 * bug fix: distinguish in type specifiers between arrays that might be
554 complex and arrays that are definitely complex. (launchpad bug lp#309129)
555 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
556 type. (reported by Levente Mészáros; launchpad bug lp#485972)
557 * bug fix: setting the value of a symbol-macro within a method in the
558 presence of type declarations works properly again. (reported by Iban
559 Hatchondo; launchpad bug lp#485019)
561 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
562 * optimization: faster FIND and POSITION on strings of unknown element type
563 in high SPEED policies. (thanks to Karol Swietlicki)
564 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
566 * improvement: better error signalling for bogus parameter specializer names
567 in DEFMETHOD forms (reported by Pluijzer)
568 * bug fix: DELETE-FILE once again works on logical pathnames (regression
570 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
572 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
573 removes previous default initargs (reported by Lars Rune Nøstdal and
575 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
576 lambda-lists. (reported by Peter Seibel)
577 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
578 correctly when starting from an executable core without saved runtime
579 options (reported by Faré Rideau, thanks to Zach Beane)
580 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
581 an optimization note instead. (reported by Martin Cracauer)
582 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
583 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
584 new process group if it doesn't need to share stdin with the sbcl
585 process. (thanks to Leslie Polzer)
586 * bug fix: SATISFIES could be misoptimized to refer to a local function.
587 (reported by Stanislaw Halik)
589 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
590 * improvement: stack allocation is should now be possible in all nested
591 inlining cases: failure to stack allocate when equivalent code is manually
592 open coded is now considered a bug.
593 * improvements related to Unicode:
594 ** the Unicode character database has been upgraded to the
595 Unicode 5.1 standard, giving names and properties to a number of new
596 characters, and providing a few extra characters with case
598 ** the system now recognizes and produces names for Unicode Hangul
600 ** the EBCDIC-US external-format is now supported for octet operations
601 (as well as for stream operations).
602 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
603 be used to output toplevel compile-time effects into a separate .CFASL
605 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
606 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
608 * optimization: TRUNCATE on known single- and double-floats is upto 25%
610 * optimization: division of floating point numbers by constants uses
611 multiplication by reciprocal when an exact reciprocal exists.
612 * optimization: multiplication of single- and double-floats floats by
613 constant two has been optimized.
614 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
615 sufficient type information is available. (thanks to Leslie Polzer)
616 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
617 known structure objects are as efficient as defstruct generated accessors.
618 * optimization: unused vector creation can now be optimized away.
619 * improvement: ASDF systems can now depends on SB-INTROSPECT.
620 * improvement: a STYLE-WARNING is signalled when a generic function
621 clobbers an earlier FTYPE proclamation.
622 * improvement: the compiler is able to track the effective type of
623 generic function across method addition and removal even in the
624 absence of an explicit DEFGENERIC.
625 * improvement: DESCRIBE now reports on symbols naming undefined
626 but assumed or declared function as well.
627 * improvement: recompilation of systems using SB-GROVEL now works
628 (thanks to Leslie Polzer)
629 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
630 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
632 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
633 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
634 well as user defined declaration names.
635 ** VARIABLE-INFORMATION is now aware of alien variables.
636 * improvement: improved address space layout on OpenBSD (thanks to Josh
638 * improvement: pretty-printing of various Lisp forms has been improved
639 (thanks to Tobias Rittweiler)
640 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
641 unused were deleted in safe code. (reported by John Fremlin)
642 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
644 * bug fix: some out-of-line array predicates were missing (reported by
646 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
648 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
649 (thanks to Larry D'Anna)
650 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
651 as well. (reported by Josh Elsasser)
652 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
653 leading to possible attempts to delete the same file twice. See docstring
654 on DELETE-FILE for details. (reported by John Fremlin)
655 * bug fix: DELETE-FILE once again deletes the file named by the pathname
656 designator argument, rather than its truename. (reported by Luis
658 * bug fix: the low-level debugger had 32-bit assumptions and was missing
659 information about some array types. (thanks to Luis Oliveira)
660 * bug fix: moderately complex combinations of inline expansions could
661 be miscompiled if the result was declared to be dynamic extent.
662 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
663 form (+ <variable> <integer>) were miscompiled under certain
665 * bug fix: in some cases no compiler note about failure to stack allocate
666 was emitted, even if the objects were in fact heap allocated.
667 * bug fix: minor violation of "otherwise inaccessible" rule for stack
668 allocation could cause objects users might reasonably expect to
669 be heap allocated to be stack allocated.
670 * bug fix: DESCRIBE signalled an error for generic functions under
671 certain circumstances. (thanks to Leslie Polzer)
672 * bug fix: Fixed spelling of an error message.
674 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
675 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
676 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
677 of SB-THREAD:THREAD-ERROR-THREAD.
678 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
679 * new feature: docstrings for local and anonymous functions are no longer
680 discarded. (thanks to Leslie Polzer)
681 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
682 values in other threads.
683 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
684 about object allocation.
685 * optimization: division of a real float by a complex float is implemented
686 with a specialised code sequence.
687 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
688 keywords is an order of magnitude faster.
689 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
690 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
691 methods, and similarly for non-standard metaclass classes as long as there
692 are no methods additional on MAKE-INSTANCE.
693 * optimization: more efficient type-checks for FIXNUMs when the value
694 is known to be a signed word on x86 and x86-64.
695 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
696 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
698 * optimization: compiler is smarter about delegating argument type checks to
700 * optimization: several character functions are now compiled somewhat more
701 efficiently. (reported by Lynn Quam)
702 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
703 * improvement: less unsafe constant folding in floating point arithmetic,
704 especially for mixed complex/real -float operations.
705 * optimization: constant double and single floats are stored in native
706 unboxed format on x86[-64].
707 * optimization: smarter code for arithmetic operations with constant floats,
708 complex floats, or integers on x86[-64].
709 * optimization: smarter code for conjugate/multiplication of float complexes
710 and abs/negate of floats on x86-64.
711 * optimization: more efficient complex float and real float operations on
713 * improvement: complex float division is slightly more stable.
714 * improvement: DESCRIBE output has been reworked to be easier to read and
715 contains more pertinent information.
716 * improvement: failure to provide requested stack allocation compiler notes
717 provided in all cases (requested stack allocation not happening without a
718 note being issued is now considered a bug.)
719 * bug fix: SB-POSIX exports the documented types and functions
720 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
721 types. (reported by "abhi")
722 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
723 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
724 (thanks to Paul Khuong)
725 * bug fix: looping around HANDLER-CASE could silently consume stack space
726 on each iteration. (reported by "foobar")
727 * bug fix: better error signalling when calls to functions seeking elements
728 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
729 (reported by Tobias Rittweiler)
730 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
731 directory components now works as it used to. (various prolems reported by
732 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
733 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
734 (reported by Elliot Slaughter, thanks to Stas Boukarev)
735 * bug fix: bogus undefined variable warnings from fopcompiled references to
736 global variables. (thanks to Lars Rune Nøstdal)
737 * bug fix: foreign function names should now appear in backtraces on
738 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
739 * bug fix: SETF compiler macro documentation strings are not discarded
741 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
742 (thanks to Alex Plotnick)
743 * bug fix: SLEEP accepts large integer arguments, truncating them to
744 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
745 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
746 * bug fix: compiler notes for expensive slot type checks could be emitted
747 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
749 changes in sbcl-1.0.29 relative to 1.0.28:
750 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
751 https://bugs.launchpad.net/sbcl
752 Bugs can be reported directly there, or by sending email to
753 sbcl-bugs@lists.sourceforge.net
754 (no subscription required.)
755 * minor incompatible change: under weak type checking policy integer
756 types are weakened less aggressively.
757 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
758 allowed to return, which causes SBCL to quit with exit status 0. Previously
759 if the function returned with a small integer return value, that value
760 was accidentally reused as the exit status.
761 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
762 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
763 :HASH-FUNCTION argument. Refer to user manual for details.
764 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
766 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
767 microseconds since the Unix epoch on all platforms.
768 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
769 allows the compiler to safely elide boundedness checks for special
771 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
772 the symbol, prohibits both lexical and dynamic binding. This is mainly an
773 efficiency measure for threaded platforms, but also valueable in
775 * new feature: UNC pathnames are now understood by the system on Windows.
776 * optimization: the compiler uses a specialized version of FILL when the
777 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
779 * optimization: accesses to potentially non-simple arrays where element type
780 is known are 50% faster.
781 * optimization: compiler now generates faster array typechecking code.
782 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
784 * optimization: multidimensional array accesses in the absence of type
785 information regarding array rank are approximately 10% faster due to
786 open coding of ARRAY-RANK.
787 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
788 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
790 * optimization: result of call to VECTOR can now be stack allocated.
791 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
792 as long as the resulting array is one-dimensional and has a known
793 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
794 length of the list matches the known length of the vector does not
795 allocate the list as an intermediate step. Ditto for VECTOR and simple
797 * optimization: MAKE-ARRAY can now stack allocate in the presence of
798 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
799 known element type, and is known to be simple and one dimensional.
800 * improvement: SBCL now emits a compiler note where stack allocation was
801 requested but could not be provided (not in all cases, unfortunately)
802 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
803 * improvement: pretty-printing loop has been implemented properly. (thanks
804 to Tobias Rittweiler)
805 * documentation: CLOS slot typechecing policy has been documented.
806 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
807 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
808 pointer, leading to memory faults. (thanks to Bart Botta)
809 * bug fix: better floating point exception handling on x86/OpenBSD.
810 (thanks to Josh Elsasser)
811 * bug fix: exit status from QUIT when called under --script was lost
812 (reported by Hubert Kauker)
813 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
814 same implementation of FILL to initialize the array, even if a more
815 efficient one was available (reported by Stas Boukarev, thanks to
817 * bug fix: potential miscompilation of array stack allocation on x86 and
818 x86-64. (reported by Time Tossavainen)
819 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
820 result in their subforms being treated as top level forms. (reported by
822 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
823 than a machine register could leave garbage in the high bits of the
824 result register (bug 316325).
825 * bug fix: disable address space randomization Linux/x86-64 as well,
826 not just x86-64. (reported by Ken Olum)
827 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
828 generate incorrect code.
829 * bug fix: #201; type inference for CONS and ARRAY types could derive
830 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
831 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
832 could not be assigned to or bound with PROGV. (reported by Lorenz
834 * bug fix: the value of CL:- in the inspector was the previous expression
835 evaluated rather than the expression being evaluated.
836 * bug fix: constants can no longer be locally declared special.
837 * bug fix: signals delivered to threads started from foreign land (read:
838 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
839 thread by blocking all signals and resignalling.
840 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
841 from :INITFORM, if any.
843 changes in sbcl-1.0.28 relative to 1.0.27:
844 * a number of bugs in cross-compilation have been fixed, with the ultimate
845 result that building under (at least) clisp should be much more reliable.
846 * minor incompatible changes: echo-streams now propagate unread-char to the
847 underlying input stream, and no longer permit unreading more than one
849 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
850 frames, allowing for instance more reliable backtraces.
851 * improvement: the debugger REPL can now reference lexical variables
852 by name directly for code compiled with (DEBUG 3).
853 * improvement: errors from malformed declarations now have better source
854 paths associated with them. (thanks to Tobias Rittweiler)
855 * optimization: faster local calls on x86/x86-64
856 * bug fix: some error messages for out-of-bound array indexes confused the
857 index and the bound. (thanks to Stas Boukarev)
858 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
860 * bug fix: running regressions tests in shells without OSTYPE set now works.
861 (reported by Harald Hanche-Olsen)
862 * bug fix: more robust static space exhaustion signalling from
863 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
864 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
865 docstring away instead of storing it under names such as (LAMBDA (X)).
866 (reported by Leslie Polzer)
867 * bug fix: timers could go off in the wrong order, be delayed indefinitely
868 (thanks to Ole Arndt for the patch)
869 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
870 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
871 potentially-invalid effective methods in its cache.
872 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
873 instances as well (thanks to Paul Khuong)
874 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
875 SB-POSIX:WAITPID and their C equivalents.
876 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
878 changes in sbcl-1.0.27 relative to 1.0.26:
879 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
880 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
881 * improvement: the system either recovers from stack exhaustion or dies
882 properly as opposed to leaving the user uncertain of whether the handler
883 trampled on some random memory next to the stack or having to rely on
884 --lose-on-corruption (which is still a good idea to use in production
885 because stack exhaustion can happen in signal handlers which will likely
887 * bug fix: fix gc related interrupt handling bug on ppc (regression from
888 1.0.25.37, reported by Harald Hanche-Olsen)
889 * bug fix: work around signal delivery bug in darwin (regression from
890 1.0.25.44, reported by Sidney Markowitz)
891 * bug fix: fix ERROR leaking memory (reported by David Thompson)
893 changes in sbcl-1.0.26 relative to 1.0.25:
894 * incompatible change: an interruption (be it a function passed to
895 INTERRUPT-THREAD or a timer function) runs in an environment where
896 interrupts can be enabled. The interruption can use
897 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
898 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
899 potentially running out of stack. Keep in mind that in the absence
900 of WITHOUT-INTERRUPTS some potentially blocking operation such as
901 acquiring a lock can enable interrupts.
902 * incompatible change: GC-OFF and GC-ON are removed, as they were
903 always unsafe. Use WITHOUT-GCING instead.
904 * new feature: runtime option --disable-ldb
905 * new feature: runtime option --lose-on-corruption to die at the
906 slightest hint of possibly non-recoverable errors: running out of
907 memory, stack, alien stack, binding stack, encountering a memory
908 fault, etc. In the absence of --lose-on-corruption a warning is
910 * enhancement: detect binding stack exhaustion
911 * enhancement: detect alien stack exhaustion on x86/x86-64
912 * improvement: generally more stable and reliable interrupt handling
913 * improvement: there is a per thread interruption queue,
914 interruptions are executed in order of arrival
915 * improvement: a repeating timer reschedules itself when the it has
916 finished, but expiration times are spaced equally. If an
917 expiration time is in the past it will trigger after a short grace
918 period that may give a chance to other things to run.
919 * optimization: slightly faster gc on multithreaded builds
920 * optimization: faster WITHOUT-GCING
921 * bug fix: when JOIN-THREAD signals an error, do it when not holding
922 important locks so that the debugger/handler doesn't produce
923 recursive errors or deadlock.
924 * bug fix: real-time signals are not used anymore, so no more
925 hanging when the system wide real-time signal queue gets full.
926 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
928 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
929 * bug fix: fix random memory faults related to interrupts on alpha
930 * bug fix: fix random memory faults related to interrupts on sparc
931 * bug fix: fix deadlocks related to starting threads
932 * bug fix: fix deadlines on locks on futex platforms
933 * bug fix: restore errno in signal handlers
934 * bug fix: fix deadlocks related to hash tables
935 * bug fix: fix deadlocks in pcl
937 changes in sbcl-1.0.25 relative to 1.0.24:
938 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
939 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
940 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
941 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
942 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
943 better name and does not return values so stale on multiprocessor systems.
944 Also, HOLDING-MUTEX-P was added for about the only sane usage of
946 * improvement: unithread builds keep track of MUTEX-VALUE.
947 * improvement: reading from a TWO-WAY-STREAM does not touch the output
948 stream anymore making it thread safe to have a concurrent reader and
949 a writer, for instance, in a pipe.
950 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
951 arguments, making compiler-macros for SETF-functions able to inspect
952 their constant arguments.
953 * improvement: COMPILE-FILE reports times with millisecond accuracy
954 (thanks to Luis Oliveira)
955 * optimization: CHAR-CODE type derivation has been improved, making
956 TYPEP elimination on subtypes of CHARACTER work better. (reported
957 by Tobias Rittweiler, patch by Paul Khuong)
958 * bug fix: setting alien structure fields of type struct by value now
959 computes the right offset for the memory copy.
960 * bug fix: compilation problem involving inlined calls to aliens with
961 result type VOID. (reported by Ken Olum)
962 * bug fix: #235a; sequential inline expasion in different policies no
963 longer reuses the functional from the previous expansion site.
964 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
965 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
966 * bug fix: named ENUMs in multiply-referenced alien record types no longer
967 cause an implied type redefinition. Regression from 1.0.21.29.
968 * bug fix: sign-extension of small signed return values now works with C
969 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
970 * improvements to the Windows port:
971 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
972 Westfold, thanks to Rudi Schlatte)
974 changes in sbcl-1.0.24 relative to 1.0.23:
975 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
976 vector of a multidimensional SIMPLE-ARRAY.
977 * new feature: the system now signals a continuable error if standard
978 readtable modification is attempted. (thanks to Tobias Rittweiler)
979 * new feature: DIRECTORY has been extended with a non-standard keyword
980 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
981 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
982 has been robustified and documented better. (thanks to Robert Goldman)
983 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
984 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
985 * tradeoff: constant FORMAT control strings are now compiled unless
986 SPACE > SPEED (previously only when SPEED > SPACE.)
987 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
989 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
991 * bug fix: lexical type declarations are now correctly reported by
992 SB-CLTL2. (reported by Larry D'Anna)
993 * bug fix: STRING-TO-OCTETS did not handle :START properly when
994 using UTF-8 as external format. (thanks to Luis Oliveira)
995 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
996 are signalled correctly. (thanks to Stas Boukarev)
997 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
998 designator. (thanks to Tobias Rittweiler)
999 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1000 designator, and returns T instead of the function. (thanks to
1002 * bug fix: direct superclasses of STANDARD-CLASS and
1003 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1004 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1005 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1006 when no class with the named slot yet exists no longer causes a
1007 compile-time style-warning.
1008 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1009 in safe code. (reported by Didier Verna)
1010 * bug fix: #430; nested structure constructors can stack allocate.
1011 * bug fix: on some 64-bit platforms dynamic space size was truncated
1012 to #xffff0000 bytes. (reported by Benjamin Lambert)
1013 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1014 REPL unusable. (reported by Daniel Herring)
1015 * bug fix: return values of READ-SEQUENCE did not take :START into
1016 account on file streams, regressions since 1.0.12.22. (reported by
1017 Thomas Russ, patch by Paul Khuong)
1018 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1019 method specializer used to confuse permuation vector optimization.
1020 * bug fix: system inserted bogus implicit type declarations for local
1021 special variables in DEFMETHOD bodies.
1022 * bug fix: #354; duplicated frames in backtraces due to
1023 non-tail-call-optimized XEPs to functions with return type NIL
1025 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1026 initializes structure object slots according to DEFSTRUCT initforms,
1027 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1028 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1029 (reported by Bruno Haible and Stephen Wilson)
1030 * bug fix: #395; fill-pointer output streams used now support
1031 element-type BASE-CHAR as well.
1032 * bug fix: compiler error when attempting to derive return value of
1033 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1035 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1037 * bug fix: Mac OS X binaries should now be portable between Leopard
1040 changes in sbcl-1.0.23 relative to 1.0.22:
1041 * enhancement: when disassembling method functions, disassembly
1042 for the associated fast function is also produced.
1043 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1045 * optimization: printing with *PRINT-PRETTY* true is now more
1046 efficient as long as the object being printed doesn't require
1047 special handling by the pretty printer.
1048 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1049 now interact correctly with type declarations.
1050 * partial bug fix: PCL detects infinite recursion during wrapper
1051 validation. (thanks to Attila Lendvai)
1052 * bug fix: #426; nested function calls are inlined properly.
1053 Previously if FOO was an inline function, in calls of the form
1054 (FOO (FOO ...)) the outer call was not inlined.
1055 * bug fix: long long arguments passed in registers to alien
1056 functions on PowerPC Linux and NetBSD are now handled correctly
1057 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1059 changes in sbcl-1.0.22 relative to 1.0.21:
1060 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1061 for the shared object in the current directory, but passes the native
1062 namestring of the designated pathname to the operation system's shared
1063 object loading function as-it.
1064 * minor incompatible change: --disable-debugger toplevel option now takes
1065 effect before processing of initialization files and --eval or --load
1067 * new feature: new commandline argument: --script, which supports
1068 shebang lines. See documentation for details. (based on work by
1070 * new feature: SAVE-LISP-AND-DIE can save current values of
1071 --dynamic-space-size and --control-stack-size in the executable core,
1072 causing it to skip normal runtime option processing. See documentation
1073 for details. (thanks to Zach Beane)
1074 * enhancement: inoccous calls to EVAL or generic functions dispatching
1075 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1076 * enhancement: the system no longer resignals errors from --load and
1077 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1078 associated with the original error to be lost. (thanks to Ariel
1080 * enhancement: :DONT-SAVE keyword argument has been added to
1081 LOAD-SHARED-OBJECT for controlling interaction with
1082 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1083 the effects of an earlier LOAD-SHARED-OBJECT call.
1084 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1085 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1086 provided. (reported by Cedric St-Jean)
1087 * bug fix: circularity handling in the reader did not treat raw
1088 structure slots correctly. (reported by Cedric St-Jean)
1089 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1090 file descriptors when there were none.
1091 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1092 was broken. (reporteed by Willem Broekema)
1093 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1094 pathnames without a directory.
1095 * bug fix: COMPILE-FILE did not warn about undefined variable
1096 references at toplevel, and LOAD of the resulting fasl did
1097 not signal an error.
1098 * bug fix: functions with non-required arguments used to end up with
1099 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1100 * bug fix: redefining a function with non-required arguments didn't
1101 update the system's knowledge about its call signature properly.
1102 * bug fix: fixed #431; incompatible alien record type redefinitions
1103 are detected and handled. (reported by Neil Haven)
1104 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1105 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1107 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1108 after alien stack frames.
1109 * bug fix: strings passed to mk{s,d}temp lacked null termination
1111 changes in sbcl-1.0.21 relative to 1.0.20:
1112 * new feature: the compiler is able to track the effective type of a
1113 generic function across method addition and removal.
1114 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1115 appropriately typed structure slots without locking.
1116 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1117 information like those gathered by TIME using a programming-friendly
1119 * new feature: TIME reports time taken even if the form performs a
1120 non-local transfer of control.
1121 * enhancement: reduced conservativism on GENCGC platforms: on
1122 average 45% less pages pinned (measured from SBCL self build).
1123 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1124 mutate constant symbols or violate declaimed type of the symbol.
1125 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1126 sleeping on the semaphore in heavily contested semaphores.
1127 * bug fix: semaphores and condition variables were not interrupt
1129 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1130 owned by other threads anymore.
1131 * bug fix: FIND on lists called KEY outside the specified
1132 subsequence. (reported by budden)
1133 * bug fix: LOG doesn't use single-float intermediate results when
1134 given mixed integer and double-float arguments, leading to better
1135 precision. (reported by Bob Felts)
1136 * bug fix: LOG with base zero returned values of inconsistent type.
1138 changes in sbcl-1.0.20 relative to 1.0.19:
1139 * minor incompatible change: OPTIMIZE qualities
1140 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1141 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1142 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1143 * documentation: some slot access efficiency guidelines have been
1144 added to the user manual.
1145 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1146 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1147 as ASSOC and MEMEBER.
1148 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1149 to more efficient EQ-comparison versions more often.
1150 * optimization: enhanced derivation of DOLIST iteration variable type
1152 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1154 * optimization: runtime lookup of function definitions can be
1155 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1156 * optimization: compiler is able to derive the return type of
1157 (AREF (THE STRING X) Y) as being CHARACTER.
1158 * optimization: CLRHASH on empty hash-tables no longer does pointless
1159 work. (thanks to Alec Berryman)
1160 * optimization: REPLACE deftransforms don't punt when :START1 or
1162 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1163 no longer emits a code deletion note. (reported by Andrew
1165 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1166 functions with an odd number of &OPTIONAL arguments, a &REST
1167 argument, and one or more &KEY arguments at the call site.
1168 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1169 arguments appeared at call sites as well.
1170 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1171 READ-LINE &co can no longer read from them afterwards. (reported
1173 * bug fix: fixed #427: unused local aliens no longer cause compiler
1174 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1176 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1177 alien-stack leakage. (reported by Andy Hefner)
1178 * bug fix: PROGV signals an error when an attempt to violate declared
1179 type of a variable or bind a constant is made.
1180 * bug fix: SET signals an error when an attempt to violate declared
1181 type of a variable is made.
1182 * bug fix: restart computation during the execution of a restart
1183 test function no longer causes infinite recursion. (reported by
1185 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1186 signals an error. (thanks to Pierre Mai)
1187 * bug fix: EXPORT left symbol unexported in conflict situations.
1188 (thanks to Michael Weber)
1189 * bug fix: correctly handle name conflicts involving CL:NIL.
1190 (thanks to Michael Weber)
1191 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1192 conflicts arising from USEing package with conflicting symbols
1193 correctly. (thanks to Michael Weber)
1195 changes in sbcl-1.0.19 relative to 1.0.18:
1196 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1197 warnings that go otherwise unhandled will be muffled if they are
1198 of the type that's the value of this variable.
1199 * optimization: stack allocation is slightly more efficient on x86
1201 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1202 where a raw slot always is initialized using the initform whose
1203 type is not know sufficiently well a compile-time are now compiled
1204 correctly. (reported by John Morrison)
1205 * bug fix: compiler no longer makes erronous assumptions in the
1206 presence of non-foldable SATISFIES types.
1207 * bug fix: stack analysis missed cleanups of dynamic-extent
1208 arguments in non-let-converted calls to local functions.
1209 * improvements to the Windows port:
1210 ** adjusted address spaces for building on both Win32 and
1211 Win64. (thanks for John Connors)
1212 * fixed some bugs revealed by Paul Dietz' test suite:
1213 ** interval arithmetic during type derivation used inexact integer
1214 to single-float coercions.
1215 ** arithmetic operations involving large integers and single
1216 floats give the same results in compiled and interpreted code.
1217 ** deriving the result type of COERCE no longer signals an error
1218 if the derived type of the second argument is a MEMBER type
1219 containing invalid type specifiers.
1220 ** ADJOIN with constant NIL as second argument works correctly.
1221 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1223 changes in sbcl-1.0.18 relative to 1.0.17:
1224 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1225 profiles only the current thread.
1226 * minor incompatible change: changes to SYMBOL-VALUE of constants
1227 defined with DEFCONSTANT now signal an error.
1228 * enhancement: SB-SPROF now has support for wallclock profiling,
1229 and is also able to profile specific threads. REPORT output
1230 has also additional sorting options.
1231 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1233 * optimization: structure allocation has been improved
1234 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1235 ** out of line constructors are ~10% faster.
1236 ** inline constructors are ~15% faster.
1237 ** inline constructors are capable of dynamic extent allocation
1238 (generally on x86 and x86-64, in some cases on other platforms
1240 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1242 * optimization: file compiler is now able to coalesce non-circular
1243 lists, non-base strings, and bit-vectors. Additionally, constants
1244 are never referenced through SYMBOL-VALUE at runtime.
1245 * optimization: code defining methods on PRINT-OBJECT (and other
1246 generic functions in the COMMON-LISP package) now loads faster.
1247 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1249 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1250 fasl is now deleted. (reported by Attila Lendvai)
1251 * bug fix: READ-LINE always returned NIL for the last line in files.
1252 (reported by Yoshinori Tahara)
1253 * bug fix: more accurate disassembly annotations of foreign function
1254 calls. (thanks to Andy Hefner)
1255 * bug fix: trimming non-simple strings and non-string string
1256 designators when the there is nothing to trim works properly.
1257 (thanks to James Knight)
1258 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1259 (thanks to Travis Cross)
1260 * fixed some bugs revealed by Paul Dietz' test suite:
1261 ** NIL is a valid function name (regression at 1.0.13.38)
1262 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1263 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1264 fill pointers properly (regression at 1.0.12.23)
1265 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1266 displacement indices properly (regression at 1.0.12.23)
1268 changes in sbcl-1.0.17 relative to 1.0.16:
1269 * temporary regression: user code can no longer allocate closure
1270 variable storage on stack, due to bug 419 without explicitly
1271 requesting it. Please consult sbcl-devel for advice if you need to
1272 use this feature in the meanwhile.
1273 * new feature: runtime argument --control-stack-size can be used to
1274 adjust thread default control stack size.
1275 * enhancement: improved TIME output
1276 ** all times are reported using the measured accuracy (milliseconds
1277 for real and GC times, microseconds for everything else.)
1278 ** processor cycle counts on x86 and x86-64.
1279 ** interpreted forms are counted for both evaluator modes.
1280 ** number of lambdas converted by the compiler is reported.
1281 ** CPU percentage report (computed from real and total run time.)
1282 ** more comprehensive run time reporting, using a condenced format
1283 ** interperted form, lambda, and page fault counts are omitted
1285 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1287 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1288 * optimization: two argument forms of LAST are upto ~10% faster
1289 in normal SPEED policies.
1290 * optimization: NCONC no longer needs to heap cons its &REST list
1291 in normal SPEED policies.
1292 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1293 to Sidney Markowitz)
1294 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1295 regression since 1.0.9.1. (thanks to Eric Marsden)
1296 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1297 since 1.0.15.36. (thanks to Paul Khuong)
1298 * bug fix: LAST when always returned the whole list when given a bignum
1299 as the second argument.
1300 * bug fix: dynamic extent allocation of nested lists and vectors
1301 could leak to otherwise accessible parts.
1302 * bug fix: invalid optimization of heap-allocated alien variable
1304 * bug fix: fasl header checking is less vulnerable to different
1305 platform word lengths.
1306 * bug fix: more correct assembler syntax for GNU binutils
1307 2.18.50.0.4 support. (thanks to Marijn Schouten)
1308 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1310 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1311 declarations) successfully. (reported by Attila Lendvai)
1313 changes in sbcl-1.0.16 relative to 1.0.15:
1314 * minor incompatible change: revert the changes to sb-posix's error
1315 signaling added in 1.0.14.
1316 * minor incompatible change: change PROBE-FILE back to returning
1317 NIL whenever we can't get a truename, as was the case before 1.0.14.
1318 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1319 inherits from ERROR instead of just CONDITION.
1320 * new feature: SB-INTROSPECT can provide source locations for instances
1321 as well. (thanks to Tobias Rittweiler)
1322 * optimization: binding special variables now generates smaller code
1323 on threaded platforms.
1324 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1325 and cases where no :TEST is given but the compiler can infer that
1326 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1327 * optimization: better LOGNOT on fixnums.
1328 * optimization: modular arithmetic for a particular requested width
1329 is implemented using a tagged representation unless a better
1330 representation is available.
1331 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1332 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1333 for wellformedness and returns a specialized vector. (reported by
1334 Francois-Rene Rideau)
1335 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1336 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1337 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1338 unscheduling timer at the same time as another timer fires.
1339 * bug fix: don't reschedule timers for dead threads.
1340 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1341 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1342 bogus errors if select() was interrupted.
1343 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1345 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1346 * enhancement: cleaner backtraces for interactive interrupts, as
1347 well as other cases where the interesting frames used to be
1348 obscured by interrupt handling frames.
1349 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1350 now supported, and tracing a whole package using (TRACE "FOO") now
1351 traces SETF-functions as well.
1352 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1353 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1354 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1355 * unreadably printed representation of hash-tables now includes
1357 * bug fix: partially fixed #188: type propagation from assignments
1358 is now more efficient.
1359 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1360 'DOUBLE-FLOAT) are not flushable.
1361 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1362 full address of the object, and none of the tag bits.
1363 * bug fix: readably printing hash-tables now respects other printer
1364 control variables. (reported by Cedric St-Jean)
1365 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1366 keyword with MAKE-HASH-TABLE.
1367 * bug fix: export SB-POSIX:MKSTEMP.
1368 * bug fix: SORT was not interrupt safe.
1369 * bug fix: XREF accounts for the last node of each basic-block as
1371 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1372 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1373 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1374 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1375 create obsolete instances in the case of redefinition or
1376 obsoletion of a superclass. (thanks to Andy Hefner)
1377 * bug fix: Support for the Alpha architecture has been revived; it had
1378 suffered somewhat from lack of maintenance since sbcl-1.0.
1379 * improvements to the Windows port:
1380 ** The system detects the codepage to use at startup, instead of
1381 using the value from the saved core. (thanks to Kei Suzuki)
1383 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1384 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1385 (see documentation for details.)
1386 * revived support for OpenBSD (contributed by Josh Elsasser)
1387 * partially fixed bug #108: ROOM no longer suffers from occasional
1388 (AVER (SAP= CURRENT END)) failures.
1389 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1390 bodies no longer cause a WARNING to be signalled. (reported by
1392 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1393 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1394 the bug in TRUNCATE.) (reported by Michael Weber)
1395 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1396 no samples. (reported by Andy Hefner)
1397 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1398 no longer appear as (NIL ...) frames in backtraces.
1399 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1400 is now actually exported from SB-EXT as documented. (reported by
1402 * bug fix: sb-aclrepl now correctly understands how to inspect
1403 single-floats on 64-bit platforms where single-floats are not boxed.
1404 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1405 yet been finalized. (reported by Levente Meszaros)
1406 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1407 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1408 SBCL-specific optimize qualities.
1410 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1411 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1412 an executable in the search path, and does so in the child
1413 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1414 been removed; it can be found in the CVS history, for somebody who
1415 needs that search behavior (see the manual).
1416 * minor incompatible change: compiler policy re. weakening type
1417 checks has changed: now type checks are weakened only if SAFETY < 2
1419 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1420 unparsing of directory pathnames as files. Analogously,
1421 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1422 filename to parse into a directory pathname.
1423 * enhancement: implicit generic function creation now signals a
1424 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1425 users can bind handlers for and muffle around calls to LOAD.
1426 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1427 to be used (using the default stream external format), and allows
1428 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1429 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1430 strings and vectors whose element-type or simplicity is not fully
1431 known at compile-time.
1432 * optimization: STRING-TRIM and related functions no longer allocate
1433 a new string when no trimming needs to be performed. These functions
1434 are also faster than before when the input string has been declared
1436 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1437 * optimization: READ-LINE is significantly faster for files containing
1439 * optimization: non-open coded uses of character comparison operators
1440 (e.g. char=) no longer cons when called with more than one parameter
1441 on platforms supporting dynamic-extent allocation.
1442 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1443 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1444 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1446 * bug fix: some sequence functions elided bounds checking when
1448 * bug fix: too liberal weakening of union-type checks when SPEED >
1450 * bug fix: more bogus fixnum declarations in ROOM implementation
1453 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1454 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1455 :SYNCHRONIZED argument, which makes the hash-table safe for
1456 concurrent accesses (but not iteration.) See also:
1457 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1458 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1459 * optimization: CONCATENATE on strings is an order of magnitude faster
1460 in code compiled with (> SPEED SPACE).
1461 * optimization: SUBSEQ is ~50% faster on lists.
1462 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1463 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1464 END is smaller then START.
1465 * bug fix: SB-PROFILE will no longer report extra consing for nested
1466 calls to profiled functions.
1467 * bug fix: ROOM implementation had bogus fixnum declarations which
1468 could cause type-errors when calling ROOM on large images.
1469 * bug fix: if file compilation is aborted, the partial fasl is now
1470 deleted, and COMPILE-FILE returns NIL as the primary value.
1471 * bug fix: number of thread safety issues relating to SBCL's internal
1472 hash-table usage have been fixed.
1473 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1474 be returned from its body when the values were being returned
1475 using unknown-values return convection and the W-P-O was wrapped
1476 inside an UNWIND-PROTECT.
1477 * bug fix: sb-posix should now compile again under Windows, enabling
1478 slime to work again.
1480 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1481 * incompatible change: hash-table accessor functions are no longer
1482 automatically protected by locks. Concurrent accesses on the same hash-table
1483 from multiple threads can give inconsistent results or even corrupt the
1484 hash-table completely. Multi-threaded applications should do their own
1485 locking at the correct granularity. In the current implementation it is
1486 still safe to have multiple readers access the same table, but it's not
1487 guaranteed that this property will be maintained in future releases.
1488 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1489 and will signal an error at runtime.
1490 * enhancement: SB-THREAD package now exports a semaphore interface.
1491 * enhancement: CONS can now stack-allocate on x86 and
1492 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1494 * enhancement: nested lists can now be stack allocated on
1495 platforms providing stack allocation support.
1496 * enhancement: dynamic-extent support has been extended to support
1497 cases where there are multiple possible sources for the stack
1499 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1500 if the mutex is uncontested on Linux.
1501 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1502 as specified by the CLHS. (thanks to Tobias Rittweiler)
1503 * bug fix: NaN comparison now works on x86-64.
1504 * bug fix: CLOSE :ABORT T on a stream with pending output now
1506 * bug fix: instances of non-standard metaclasses using standard
1507 instance structure protocol sometimes missed the slot type checks
1509 * bug fix: known functions can be inlined in high-debug code.
1511 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1512 * minor incompatible change: the MSI installer on Windows no longer
1513 associates .lisp and .fasl files with the installed SBCL.
1514 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1515 on Windows. (thanks to Luis Oliviera)
1516 * new feature: SB-CLTL2 contrib module now implements
1517 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1518 * optimization: scavenging weak pointers is now more efficient,
1519 requiring O(1) instead of O(N) per weak pointer to identify
1520 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1521 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1522 method bodies using constant slot-names when the first argument is
1523 a specializer parameter for the method.
1524 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1525 names, when the class of the instance is a direct instance
1526 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1527 as slow as the constant slot-name case.)
1528 * optimization: member type construction is now O(N) instead
1530 * optimization: UNION and NUNION are now O(N+M) for large
1531 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1533 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1534 now more readable in environments like Slime which display it.
1535 (thanks to Tobias C. Rittweiler)
1536 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1537 was able to infer the correct argument type for the object on which
1538 the CAS operation was being performed.
1539 * bug fix: copy propagation interfered with parallel assignment
1540 semantics in local calls. (reported by Paul Khuong)
1541 * bug fix: the signed modular fixnum shift compiled to wrong code on
1542 x86 and x86-64. (spotted by a slight modification to some of
1545 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1546 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1547 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1548 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1550 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1551 and generic function now print the object identity for anonymous
1552 instances. (thanks to Attila Lendvai)
1553 * enhancement: as an extension to MOP, SBCL now supports SETF of
1554 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1555 (thanks to Attila Lendvai)
1556 * enhancement: sb-cover has an alternate annotation mode which puts
1557 the form annotations at the car of the form, instead of annotating
1558 it completely. The benefit of this mode is that it shows better
1559 which forms were instrumented by the compiler.
1560 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1561 by printer control variables. (reported by Dan Corkill)
1562 * bug fix: system leaked memory when delayed output was performed by
1563 the OS in smaller chunks then expected. (thanks to David Smith)
1564 * bug fix: system leaked memory when file streams were not closed
1566 * bug fix: large objects written to slow streams that were modified
1567 after the write could end up with the modified state written to
1568 the underlying file descriptor.
1569 * bug fix: multiple threads operating in parallel on the same stream
1570 could cause buffer-overflows.
1571 * bug fix: source location information is stored correctly
1572 (broken since 1.0.6). This bug would generally show up as the
1573 Slime debugger highlighting the wrong form when the sldb-show-source
1575 * bug fix: Branch forms are again annotated as branches in the sb-cover
1577 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1578 on x86-64. (reported by Gregory Vanuxem)
1579 * bug fix: EQUALP could return wrong results for structures with raw
1580 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1581 word). (reported by Vjacheslav Fyodorov)
1582 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1585 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1586 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1587 atomic compare-and-swap operations on threaded platforms.
1588 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1589 allows assigning a global minimum value to optimization qualities
1590 (overriding proclamations and declarations).
1591 * enhancement: closed over variables can be stack-allocated on x86
1593 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1595 * optimization: slot definition lookup is now O(1). This speeds up
1596 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1597 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1598 * optimization: ASSOC and MEMBER can now be open-coded for all
1599 combinations of keyword arguments when second argument is constant
1600 and SPEED >= SPACE. In other cases a specialized version is
1602 * bug fix: using obsoleted structure instances with TYPEP and
1603 generic functions now signals a sensible error.
1604 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1605 (reported by Kristoffer Kvello)
1606 * bug fix: backtrace construction is now more careful when making
1607 lisp-objects from pointers on the stack, to avoid creating bogus
1608 objects that can be seen by the GC.
1609 * bug fix: defaulting of values in contexts expecting more than 7
1610 variables now works on x86-64. (reported by Christopher Laux)
1611 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1613 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1614 as the property-list of a symbol.
1615 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1616 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1617 situations requested, are once again file-compileable. (reported
1620 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1621 * MOP improvement: support for user-defined subclasses of
1622 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1623 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1624 the expansion of DEFMETHOD, is responsible for generating a form
1625 which creates a list of specializers when evaluated. Additional
1626 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1627 debugging and introspective support.
1628 * minor incompatible change: the (unsupported) spinlock interface
1629 has changed: free spinlock now has the value NIL, and a held spinlock
1630 has the owning thread as its value.
1631 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1632 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1634 * enhancement: name of a socket-stream is now "a socket" instead of
1635 "a constant string".
1636 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1637 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1638 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1639 for generic functions. (Thanks to Tobias C. Rittweiler)
1640 * optimization: bignum printing speed has been improved by 20-40%
1641 (depending on the bignum size.)
1642 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1644 * bug fix: the cache used by the CLOS to store precomputed effective
1645 methods, slot offsets, and constant return values is now thread and
1647 * bug fix: generic function dispatch function updating is now thread
1648 and interrupt safe (in the sense that the known issues have been
1650 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1651 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1652 * bug fix: asdf systems with dependencies to the SB-POSIX or
1653 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1654 * bug fix: interrupt safety of applicable method computation has been
1657 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1658 * new contrib: sb-cover, an experimental code coverage tool, is included
1659 as a contrib module.
1660 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1661 significantly faster.
1662 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1663 produce more efficient code on x86-64 if the compiler can determine
1664 that (+ INDEX <constant>) does not require a bounds check and FOO
1665 has an element type at least 8 bits wide.
1666 * enhancement: a new, experimental synchronous timeout facility is
1667 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1668 * enhancement: when a symbol name conflict error arises, the
1669 conflicting symbols are always printed with a package prefix.
1670 (thanks to Kevin Reid)
1671 * enhancement: stepping is now once again supported on the SPARC and
1672 MIPS platforms. (It is also now more likely to work on CheneyGC
1674 * enhancement: sb-sprof can now also track and report accurate call
1676 * bug fixes: the treatment of non-standard subclasses of
1677 SB-MOP:SPECIALIZER is more correct.
1678 * incompatible change: PURIFY no longer copies the data from the
1679 dynamic space into the static and read-only spaces on platforms
1680 that use the generational garbage collector
1681 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1683 * bug fix: GC race condition occasionally resulting in crashes with
1684 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1686 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1688 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1689 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1690 * bug fix: an asynchronous interrupt could previously leave the
1691 system running with GC inhibited.
1692 * bug fix: a DECLARE form evaluated at top-level now causes an error
1693 rather than silently (or verbosely) returning NIL.
1694 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1695 result in a error being signalled due to source form lookup errors.
1696 (reported by Peter Graves)
1698 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1699 * incompatible change: removed writer methods for host-ent-name,
1700 host-ent-addresses -- changing the values did not update the DNS
1702 * minor incompatible change: changed experimental JOIN-THREAD interface
1703 * documentation: the manual now lists reader and writer methods
1704 in class slot documentation sections. (thanks to Richard M Kreuter)
1705 * documentation: unwinding from asyncronous events has been
1706 documented as unsafe.
1707 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1708 in multithreaded application code.
1709 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1710 platforms. (thanks to James Anderson for the optimization hint)
1711 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1713 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1714 variants no longer cons.
1715 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1716 their NOT- variants no longer cons.
1717 * optimization: EQUAL hash tables no longer use SXHASH for objects
1718 of all data types, but instead use an EQL hash for types for which
1719 EQUAL is the same as EQL.
1720 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1721 are significantly faster.
1722 * optimization: new STRING-OUTPUT-STREAM implementation is much
1723 faster for large outputs and conses 30% less on average.
1724 * enhancement: XREF information is now collected for references made
1725 to global variables using SYMBOL-VALUE and a constant argument.
1726 * enhancement: SIGINT now causes a specific condition
1727 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1728 * bug fix: FILE-POSITION used to signal an error in some cases where
1729 ANSI requires it to return NIL.
1730 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1731 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1732 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1734 * bug fix: bad type declaration in the CLOS implementation has
1735 been fixed. (reported by James Anderson)
1736 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1737 (thanks to Lutz Euler)
1738 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1739 required by the CLHS. (reported by Samium Gromoff)
1740 * bug fix: dead unbound variable references now signal an error.
1741 (reported by Marco Monteiro)
1742 * bug fix: / with an unused value was being deleted in safe code.
1743 (thanks to Marco Monteiro and Kevin Reid)
1744 * bug fix: number of characters that can be written onto a single
1745 line in a file is unlimited.
1746 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1747 been fixed by inhibiting interrupts for when GC is disabled.
1748 * bug fix: some interrupt safety issues with GETHASH, (SETF
1749 GETHASH), CLRHASH and REMHASH have been fixed.
1750 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1751 specifier no longer causes infinite recursion.
1752 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1753 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1754 * bug fix: an &environment argument with the correct variable information
1755 is passed to macros that are expanded during byte compilation.
1756 (reported by Samium Gromoff)
1757 * bug fix: a logic error was causing the hash function for bignums to
1758 have excessive amounts of collisions. (reported by Faré Rideau)
1759 * bug fix: modifying the contents of an array could change the return
1760 value of SXHASH on that array, which is only allowed for strings
1761 and bit vectors. (bug introduced in 0.9.16)
1762 * improvement: the x86-64/darwin port now passes all tests (except
1763 for the debugger tests) but should still be considered
1764 experimental until this is fixed.
1765 * improvement: a style-warning is signaled for CASE (etc) clauses with
1766 duplicate keys. (thanks to Kevin Reid)
1767 * improvement: macos/x86 and macos/x86-64 now use mach exception
1768 handlers for dealing with illegal instructions (for trapping and
1769 error handling) and memory protection violations (for GC).
1771 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1772 * new platform: experimental support for x86-64/darwin (MacOS).
1773 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1774 and getnameinfo sockets functions are used instead of gethostbyaddr
1775 and gethostbyname, on platforms where the newer functions are available.
1776 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1778 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1779 don't print the startup banner, but behave as if --noinform was passed
1780 as a command line argument. (thanks to Kevin Reid)
1781 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1782 * optimization: code using alien values with undeclared types is much faster.
1783 * optimization: the compiler is now able to open code SEARCH in more cases.
1784 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1785 * bug fix: using standardized COMMON-LISP special variables as loop
1786 variables no longer signals bogus package lock violations. (reported
1788 * bug fix: declaring local loop variables to be of a range-limited type
1789 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1790 (reported by Andras Simon)
1791 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1792 bugs remain on x86-64.)
1793 * bug fix: the #= and ## reader macros now interact reasonably with
1794 funcallable instances.
1795 * bug fix: type-checks for function arguments were compiled using the
1796 compiler policy settings of the wrong lexical environment (in 1.0.2
1798 * bug fix: SHADOW accepts characters as string designators, as required
1799 by the spec (thanks to Eric Marsden)
1800 * bug fix: fixed GC safety issues when foreign functions are called with
1801 non-base strings as arguments
1802 * bug fix: more consistent error output for fatal-compiler-warnings, like
1804 * bug fix: functions with proper names were showing up as NIL in
1805 backtraces (reported by Edi Weitz, regression in 1.0.2)
1807 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1808 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1809 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1810 produce more efficient code on the x86 if the compiler can determine
1811 that (+ INDEX <constant>) does not require a bounds check and FOO
1812 has an element type at least 8 bits wide.
1813 * bug fix: references to undefined variables are handled the same way
1814 in toplevel forms as in the normal compiler
1815 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1817 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1818 (thanks to Jon Buller)
1819 * improvement: faster compilation times for complex functions
1820 * improvement: added readlink support to SB-POSIX (thanks to Richard
1823 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1824 * improvement: experimental support for mach exception handling on
1825 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1827 * improvement: support for GBK external format.
1828 (thanks to Chun Tian (binghe))
1829 * improvement: the debugger now displays variables that have been closed
1830 over, in code compiled with (DEBUG 2) or higher
1831 * improvement: support for executable cores on NetBSD (thanks to
1833 * new feature: added a RESTART-FRAME debugger command
1834 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1835 be used to provide an implementation for FILE-POSITION on Gray streams
1836 (thanks to Eric Marsden)
1837 * new feature: add syslog, openlog and closelog support to SB-POSIX
1838 (thanks to Richard Kreuter)
1839 * optimization: the function call overhead in code compiled with
1840 a high DEBUG optimization setting is significantly
1841 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1842 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1843 (thanks to Tony Martinez)
1844 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1845 evaluated once (reported by Kevin Reid)
1846 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1847 works again (thanks to Kilian Sprotte)
1848 * bug fix: an error is signaled for tagbodies with duplicate tags
1849 (thanks to Stephen Wilson)
1850 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1851 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1852 stack frames from alien callbacks.
1853 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1854 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1855 65k pages (thanks to David Woodhouse)
1856 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1858 changes in sbcl-1.0.1 relative to sbcl-1.0:
1859 * new platform: FreeBSD/x86-64, including support for threading.
1860 * new feature: the compiler stores cross-referencing information
1861 about function calls (who-calls), macroexpansion (who-macroexpands)
1862 and special variables (who-binds, who-sets, who-references) for code
1863 compiled with (< SPACE 3). This information is available through the
1864 sb-introspect contrib.
1865 * new feature: users may subclass SEQUENCE, and have instances of
1866 these classes interoperate with standard Common Lisp functions if
1867 a number of methods are defined. (This feature is experimental
1868 and the interface subject to change based on feedback from SBCL
1869 users and the general community)
1870 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1871 x86/x86-64, rather than the previous fixed depth of 8
1872 * improvement: another pthread back-end of mutex "pthread-futex".
1873 * bug fix: non-ascii command-line arguments are processed correctly
1874 (thanks to Yaroslav Kavenchuk)
1875 * bug fix: non-required arguments were not passed correctly when a method
1876 defined using DEFMETHOD was called from a mop-generated method using
1877 CALL-NEXT-METHOD (reported by Pascal Costanza)
1878 * bug fix: recursion is now permitted in accessors through
1879 SLOT-UNBOUND. (reported by Pascal Costanza)
1880 * bug fix: an error was signaled at startup if the HOME environment
1881 variable was defined, but had an empty value (reported by Peter Van Eynde)
1882 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1883 signal a PROGRAM-ERROR, not a BUG.
1884 * bug fix: SB-POSIX:READDIR works when built with large file support.
1885 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1887 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1888 for better automatic indentation support. (thanks to Matt Pillsbury)
1889 * optimization: loading generic functions no longer takes O(n^2) time,
1890 proportional to the amount of methods in the generic function
1891 (reported by Todd Sabin and Jeremy Brown)
1892 * optimization: the FIND and POSITION family of sequence functions
1893 are significantly faster on arrays whose element types have been
1895 * improvements to the Windows port:
1896 ** Intermittent heap corruption problems have been fixed. (thanks
1897 to Alastair Bridgewater)
1898 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1900 ** Lisp is able to unwind foreign exception frames from alien
1901 callbacks. (thanks to Alastair Bridgewater)
1903 changes in sbcl-1.0 relative to sbcl-0.9.18:
1904 * improvement: experimental support for threading on FreeBSD/x86.
1905 (thanks to NIIMI Satoshi)
1906 * improvement: runtime option --dynamic-space-size can be used
1907 to set the size of the dynamic space reserved on startup.
1908 * improvement: floating point modes in effect are now saved in
1909 core, and restored on startup.
1910 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1911 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1912 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1913 threads are not running after *SAVE-HOOKS* have run.
1914 * improvement: writes to CLOS instance slots are type-checked in code
1915 compiled with (SAFETY 3)
1916 * improvement: floating-point exception handling on FreeBSD (thanks to
1918 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1919 (thanks to Zach Beane)
1920 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1922 * improvement: added support for the Shift-JIS external format.
1923 (contributed by NIIMI Satoshi)
1924 * improvement: callbacks are supported on Linux/PPC. (thanks to
1926 * bug fix: compiler bug triggered by a (non-standard) VALUES
1927 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1928 * bug fix: file compiler no longer confuses validated and already
1929 dumped structurres. (reported by Kaersten Poeck)
1930 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1931 fill-pointer signals a type-error as required. (thanks to
1933 * bug fix: disassemly of funcallable instances works.
1934 * bug fix: single stepping on PPC.
1935 * bug fix: fix thread-safety problems in the type system (generally
1936 manifesting as nonsensical errors like "STRING is a bad type specifier
1937 for sequences" or "The value 1 is not of type FIXNUM")
1938 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1939 (reported by Josip Gracin)
1940 * bug fix: an error is signaled for attempts to displace arrays with
1941 incompatible element types (thanks to Mario Mommer)
1942 * bug fix: more correct handling of wide characters in debug info
1943 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1944 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1945 and don't cause extra consing
1946 * optimization: MAP and MAP-INTO are significantly faster on vectors
1947 whose elements types have been declared.
1948 * Improvements to SB-SPROF:
1949 ** Support for allocation profiling
1950 ** Reduced profiling overhead, especially for long profiling runs
1951 * Improvements to the Windows port:
1952 ** floating point exceptions are now reported correctly.
1953 ** stack exhaustion detection works partially.
1954 ** more accurate GET-INTERNAL-REAL-TIME.
1955 ** better RUN-PROGRAM behaviour in case of errors in the child
1957 ** PROBE-FILE now simplifies pathnames correctly.
1958 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1959 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1960 1st 1970 (although time timezone data will be unreliable).
1961 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1963 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1964 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1965 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1967 * bug fix: two potential GC deadlocks affecting threaded builds.
1968 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1969 returns T (reported by Anton Kazennikov)
1970 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1971 with non-variable places
1972 * bug fix: remove a race condition in the setting of
1973 funcallable-instance functions, this should make threaded CLOS
1974 code more stable against memory faults.
1975 * bug fix: corruption of specials when unbinding is interrupted by an
1976 asynchronous unwind (reported by Hannu Koivisto)
1977 * improvement: the debugger will now also display local variables that
1978 are only used once, for code compiled with a DEBUG optimization quality
1981 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1982 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1983 * incompatible change: External-format support for FFI calls. The
1984 SB-ALIEN:C-STRING no longer implies an ASCII
1985 external-format. Instead the string is subject to external-format
1986 conversion. Additionally return values of type SB-ALIEN:C-STRING
1987 are by default of type (SIMPLE-ARRAY CHARACTER), not
1988 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1989 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1990 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1991 * incompatible change: SB-EXT package no longer contains the
1992 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1993 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1995 * incompatible change: the single-stepper is no longer available
1996 on Alpha, Mips and Sparc platforms.
1997 * minor incompatible change: the direct superclasses of
1998 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1999 not (STANDARD-OBJECT FUNCTION). This makes the
2000 class-precedence-lists of GENERIC-FUNCTION and
2001 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2003 * minor incompatible change: the default stream external format on
2004 non-unicode SBCL is no longer detected from the locale, but is always
2006 * new feature: Add a version of evaluator that uses an interpreter instead
2007 of the compiler. EVAL still uses the compiler by default, to switch it
2008 to use the interpreter, set the value of the variable
2009 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2010 * minor incompatible change: the single-stepper REPL has been merged
2011 with the normal debugger (see the "Stepping" heading of the debugger help
2012 for more details). The debugger command STEP will no longer switch
2013 to the single-stepper REPL.
2014 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2015 for a type now works.
2016 * bug fix: loading of default sysinit file works. (thanks to Leonid
2018 * bug fix: better detection of circularities in the file-compiler.
2019 (reported by Marco Monteiro)
2020 * bug fix: the CL pathname functions now work with files that have
2021 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2022 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2023 systems with Unix98 pty semantics.
2024 * bug fix: ASDF-INSTALL will now work with bsd tar.
2025 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2027 * bug fix: timers expiring in dead threads no longer cause a
2028 type-error (reported by Paul "Nonny Mouse").
2029 * bug fix: thanks to more lightweight single-stepper instrumentation,
2030 code compiled with (DEBUG 3) will compile and execute significantly faster,
2031 and will have more accurate type-inferencing than before
2032 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2033 whose bindings are modified
2034 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2035 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2036 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2037 CL:SOFTWARE-VERSION with proper version
2039 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2040 * feature: implemented the READER-METHOD-CLASS and
2041 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2042 as specified by AMOP.
2043 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2045 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2046 (thanks to Lutz Euler)
2047 * optimization: hashing of general arrays and vectors has been
2048 improved. (reported by Any Fingerhut)
2049 * enhancement: SB-INTROSPECT is now able to find definitions of
2050 profiled functions. (thanks to Troels Henriksen)
2051 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2052 as well, allowing compiler-macros for SETF-functions to expand.
2053 * enhancement: step-instrumentation no longer wraps known
2054 single-value functions with multiple-value context, allowing
2055 better type inference.
2056 * fixed bug #337: use of MAKE-METHOD in method combination now works
2057 even in the presence of user-defined method classes. (reported by
2058 Bruno Haible and Pascal Costanza)
2059 * fixed bug #339(c): if there are applicable methods not part of any
2060 long-form method-combination group, call INVALID-METHOD-ERROR.
2061 (reported by Bruno Haible)
2062 * fixed bug #361: the :FUNCTION initarg in the protocol for
2063 initialization of methods can now be used to override
2064 internally-produced optimized functions. (reported by Bruno
2066 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2067 system-provided lambda expression no longer cause warnings about
2068 unbound #:|pv-table| symbols.
2069 * bug fix: improved the handling of type declarations and the
2070 detection of violations for keyword arguments with non-constant
2072 * bug fix: potentially erronous calls to PATHNAME and
2073 MERGE-PATHNAMES were being flushed in some cases.
2074 (reported by Richard Kreuter)
2075 * bug fix: compiled calls to TYPEP were mishandling obsolete
2076 instances. (reported by James Bielman and Attila Lendvai)
2077 * bug fix: format strings with ~> without matching ~< no longer
2078 trigger an AVER, but signal an understandable error instead.
2079 (reported by Antonio Martinez)
2080 * bug fix: specifying an output-file without a pathname-type for
2081 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2082 of input-file instead of "fasl". (reported by Robert Dodier)
2083 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2084 (reported by James Y Knight).
2085 * bug fix: compiler-macros-function did not consider the environment
2086 argument for shadowing by local functions.
2087 * bug fix: compiler-macros expansion was inhibited by local INLINE
2089 * bug fix: inline expansions of known functions were subject to
2090 step-instrumentation in high debug policies, leading to problems
2091 with type-inference.
2092 * bug fix: compiler failed to differentiate between different CONS
2093 types in some cases.
2094 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2095 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2096 * bug fix: #368: incorrect use of expressed vs. upgraded array
2098 * bug fix: #306a: more precise unions of array types.
2099 * thread-safety improvements:
2100 ** CONDITION-WAIT could return early on Linux, if the thread was
2101 interrupted and subsequently continued with SIGCONT.
2102 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2104 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2105 * added support for the ucs-2 external format. (contributed by Ivan
2107 * minor incompatible change: pretty printing of objects of type
2108 (cons symbol) is, in the default pprint-dispatch-table, now
2109 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2111 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2112 called later in a class's lifetime, possibly as late as when the
2113 first instance of the class is created. Previously,
2114 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2115 class became finalizeable.
2116 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2117 for multibyte external-format streams. (thanks to "vbzoli")
2118 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2119 with :ALLOCATION :CLASS inherited from superclasses of the
2121 * fixed bug: anonymous classes can now be created using the :NAME
2122 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2123 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2124 * fixed bug: core-files saved with :EXECUTABLE T can again be
2125 executed when SBCL_HOME isn't set. (reported by James Knight)
2126 * fixed bug: toplevel LOCALLY forms with declarations could
2127 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2128 * fixed bug: printing from several different threads using different
2129 values of *print-case* could cause invalid output, due to
2130 some internal special variables of the printer not being bound
2131 thread-locally (reported by Max Mikhanosha)
2132 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2133 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2134 (reported by Pascal Costanza)
2135 * fixed bug: FINALIZE-INHERITANCE is called from
2136 REINITIALIZE-INSTANCE on classes when the class has previously
2137 been finalized, as required by AMOP.
2138 * minor code generation optimizations:
2139 ** better register allocation in CLOS dispatching functions
2140 ** overflow detection when coercing signed bytes to fixnums on x86-64
2141 ** is now implemented with one IMUL instruction instead of three shifts
2142 ** more efficient bit-vector access on x86 and x86-64
2143 ** more efficient access to raw structure slots on x86 and x86-64
2144 * fixed some bugs revealed by Paul Dietz' test suite:
2145 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2146 return its argument.
2148 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2149 * feature: thread support on Solaris/x86, and experimental thread support
2151 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2153 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2154 default method for SLOT-UNBOUND.
2155 * minor incompatible change: prevent the user from specializing the
2156 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2157 somewhat counter to the intent of the protocol, I (CSR) think, and
2158 additionally it just doesn't work in SBCL as currently
2159 implemented, thanks to optimizations (that are always valid for
2160 the other three SLOT-VALUEish functions, but not for the setter).
2161 * minor incompatible change: the :SB-LDB feature is now enabled by
2162 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2163 the low-level debugger.
2164 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2165 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2166 down to an SB-SYS:FD-STREAM, allowing direct communication in
2167 more cases. Temporary files and pipes are still used as a fallback
2169 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2170 on the non-reentrant C functions localtime(3) and gmtime(3).
2171 * bug fix: global optimization policy was not visible in LOCALLY and
2173 * bug fix: class objects can be used as specializers in methods.
2174 (reported by Pascal Costanza)
2175 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2176 with a type error. (reported by blitz_ on #lisp)
2177 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2178 failed with a type error. (reported by Pascal Bourguignon)
2179 * bug fix: merging pathnames against defaults with :DIRECTORY
2180 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2181 (reported by James Y Knight)
2182 * bug fix: saving large (>2GB) cores on x86-64 now works
2183 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2184 constant index and a (simple-array (signed-byte 32)) array
2185 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2186 error (patch by Robert J. Macomber)
2187 * feature: TIME now displays the amount of run-time spent in GC
2188 * bug fix: The debugger now does a better job of respecting
2189 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2190 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2191 workaround for bug 403.)
2192 * bug fix: floating point exception handling now works on FreeBSD
2193 (thanks to NIIMI Satoshi)
2194 * fixed some bugs revealed by Paul Dietz' test suite:
2195 ** MISC.641: LET-conversion were not supposed to work in late
2197 * improvements to the Win32/x86 port:
2198 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2199 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2201 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2202 * new feature: source path information is generated for macro-expansion
2203 errors for use in IDE's like Slime (thanks to Helmut Eller)
2204 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2205 * bug fix: compiler does not loop forever on an invalid type in
2207 * improvement: compilation of most CLOS applications is significantly
2209 * optimization: added a limited bytecode compiler for simple toplevel
2210 forms, speeding up compilation and FASL loading
2211 * bug fix: the statistical profiler now properly distinguishes anonymous
2214 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2215 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2216 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2217 into subclasses of the finalized class. Now user calls to
2218 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2219 system return before any subclasses are finalized.
2220 * minor incompatible change: The reader no longer ignores errors
2221 regarding non-existent packages in #+ and #- feature tests.
2222 * new feature: command line options --no-sysinit, --no-userinit to
2223 inhibit loading the corresponding init files
2224 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2225 for sending data through UDP sockets (thanks to François-René Rideau)
2226 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2227 error is signalled instead (thanks to François-René Rideau)
2228 * minor incompatible change: Error signalling behaviour of lexical
2229 operations violating package locks has changed slightly. Refer to
2230 documentation on package locks for details.
2231 * enhancement: EVAL can process IF-expressions without resorting to the
2233 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2234 constant-folded properly due to missing out-of-line functions.
2235 (reported by Mika Pihlajamäki)
2236 * bug fix: LISTEN sometimes returned T even in cases where no data was
2237 immediately available from the stream
2238 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2239 were reversed. (reported by Levente Mészáros)
2240 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2241 when given a vector displaced to an adjustable array. (reported
2243 * bug fix: derivation of float boundaries from numbers outside the
2244 appropriate float range (reported by John Wiseman)
2245 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2247 * bug fix: precomputing cache entries for generic functions with
2248 some subclasses of specializers as yet invalid does not attempt to
2249 fill a cache line with a negative offset. (reported by Levente
2251 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2252 allow condition class objects as arguments to DOCUMENTATION and
2253 (SETF DOCUMENTATION); only find and set documentation for
2254 structure names for the STRUCTURE doc-type. (suggested by Gary
2256 * improvements to the Win32/x86 port:
2257 ** (user-homedir-pathname) and default initialization file
2258 locations now know about the user's "Documents and Settings"
2259 directory (thanks to Yaroslav Kavenchuk)
2260 ** run-program is implemented (thanks to Mike Thomas)
2261 ** sockets support (thanks to Timothy Ritchey)
2262 ** better backtrace support (thanks to Alastair Bridgewater)
2263 ** sb-grovel supported
2264 ** asdf-install and sb-posix work somewhat
2265 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2266 * improvements to the Solaris/x86 port:
2267 ** works on Solaris 11/Solaris Express
2268 ** floating-point exception handling support
2269 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2270 * fixed some bugs revealed by Paul Dietz' test suite:
2271 ** REMOVE-METHOD returns its generic function argument even when
2272 the method is not one of the generic functions' methods.
2273 ** objects declared as MEMBER types can be admissible arguments to
2274 structure accessors.
2275 ** printing characters should simply be printed by the FORMAT ~:C
2277 ** compiler failure when compiling functions with hairy constant
2278 defaults for optional parameters.
2279 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2280 function, which is already optimized.
2282 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2283 * new platform: experimental support for SBCL x86/Darwin, including
2284 MacOS X 10.4.5 on Intel.
2285 * new feature: Unicode character names are now known to the system
2286 (through CHAR-NAME and NAME-CHAR).
2287 * new feature: the filesystem location of SBCL's core file is
2288 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2289 * minor incompatible change: the contrib modules SB-POSIX and
2290 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2291 this change is to make it easier to distribute
2292 location-independent binaries.
2293 * bug fix: as implied by AMOP, standardized classes no longer have
2294 slots named by external symbols of public packages. (reported by
2296 * optimization: calling functions via constant symbols -- as in
2297 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2298 via the function object as in (FUNCALL #'FOO).
2299 * optimization: on x86 and x86-64, the calling convention for the
2300 case of dealing with an unknown number of values has been altered
2301 to be friendlier to the prediction heuristics implemented,
2302 particularly with reference to CALL and RET pairing. (thanks to
2303 Alastair Bridgewater)
2304 * optimization: on x86, the code for access to thread-local symbol
2305 values and binding/unbinding of thread-local symbols is smaller.
2306 (thanks to Alastair Bridgewater)
2307 * enhancement: CONSTANTP is now able to determine constantness of
2308 more complex forms, including calls to constant-foldable standardized
2309 functions and some special forms beyond QUOTE.
2310 * fixed bug: occasional GC crashes on Solaris/x86
2311 * optimization: x86-64 supports stack allocation of results of simple
2312 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2313 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2314 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2315 (thanks to James Knight)
2316 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2317 by the standard (thanks to Stephen Compall)
2319 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2320 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2321 be used for bundling the runtime and the core file into one
2322 executable binary. This feature is not currently supported on all SBCL
2323 platforms. (thanks to James Bielman and NIIMI Satoshi)
2324 * new feature: a generational or ephemeral garbage collector is now
2325 the default on the PowerPC platform (both Linux and Darwin). The
2326 old Cheney (stop and copy) collector is a build-time option.
2327 (thanks to Cyrus Harmon, after Raymond Toy)
2328 * minor incompatible change: the method by which SBCL finds its
2329 contributed modules has changed; it no longer relies on symbolic
2330 links from an $SBCL_HOME/systems directory, but searches directly
2331 in the subdirectories of $SBCL_HOME.
2332 * enhancement: the dynamic heap size on the Linux/PPC platform is
2333 markedly larger, even using the older Cheney garbage collector.
2334 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2335 certain complicated string types. (reported by Gary King)
2336 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2337 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2338 * fixed bug: DOCUMENTATION on structures no longer signals an
2339 error if no structure type of the right name exists. (reported by
2341 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2342 applicable non-standard primary or :AROUND method on
2343 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2344 no longer cause unbound variable errors. (reported by Kevin Reid)
2345 * fixed bug: metacircle resolution in cases where methods have slots
2346 added before the slots from STANDARD-METHOD. (reported by Jean
2348 * fixed bug: the Power PC assembly code for calling into lisp
2349 sometimes computed its return address wrongly (depending on the
2350 15th bit of the address, fixed at link time). This used to
2351 manifest itself in a segmentation violation while building PCL.
2352 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2353 many others over the years)
2354 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2355 the stack pointer (treated as a signed integer) is negative.
2356 (thanks to Peter van Eynde)
2358 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2359 * new platform: experimental support for the Windows operating
2360 system has been added. (thanks to Alastair Bridgewater)
2361 * fixed several bugs in and robustified the PPC FFI (including
2362 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2363 * bug fix: allow non-simple string symbol names (reported by Paul
2365 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2367 * bug fix: saving a core corrupted callbacks on x86/x86-64
2368 * bug fix: closed a loophole in metacircularity detection and
2369 grounding in the PCL implementation of CLOS.
2370 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2371 (reported by tomppa on #lisp)
2372 * bug fix: clear the direction flag on Lisp -> C transitions, as
2373 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2374 (reported by Andrej Grozin and Hendrik Maryns)
2375 * optimization: major improvements to GC efficiency on GENCGC platforms
2376 * optimization: faster implementation of EQUAL
2377 * optimization: emit more efficient opcodes for some common
2378 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2379 * optimization: several other minor code-generation improvements on x86-64
2380 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2382 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2383 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2384 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2385 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2386 by ANSI as a generic function, and for consistency (SETF
2387 GENERIC-FUNCTION-NAME) is treated likewise.
2388 * fixed bug #233.b: make constraint propagation notice when a variable
2389 value is changed after it is referenced but before it is used
2390 * fixed bug #296: no more arbitrary behaviour from filenames with
2391 odd characters as --load arguments. (reported by Adam Warner)
2392 * fixed bug #390: :CHARACTER-SET pathname components now work as
2393 expected. (reported by Tim Daly Jr)
2394 * fixed bug #391: complicated :TYPE intersections in slot
2395 definitions no longer cause an error in PCL internals.
2396 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2397 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2398 returning the number of octets which would be written to the
2399 file-stream. (thanks to Robert J. Macomber)
2400 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2401 arguments to the internal stream functions. (thanks to David
2403 * bug fix: stack exhaustion is now handled on the x86/SunOS
2404 platform. (thanks to Daisuke Homma)
2405 * bug fix: more accurate ROOM results on GENCGC platforms
2406 * optimization: improved type inference for arithmetic-for
2407 index variables in LOOP
2408 * optimization: faster floating-point SQRT on x86-64
2409 * fixed some bugs revealed by Paul Dietz' test suite:
2410 ** DOCUMENTATION returns NIL instead of "" for method combinations
2411 that don't have a docstring
2413 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2414 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2415 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2416 therefore are not customizeable by user code (as seems to be at
2417 least permitted and maybe required by AMOP). As a consolation,
2418 however, the SBCL implementation of these functions now calls
2419 REINITIALIZE-INSTANCE as specified by AMOP.
2420 * bug fix: slot-definition documentation is propagated as per ANSI
2421 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2422 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2423 argument, as do eslotd initialization methods. (from Pascal
2424 Costanza's "Closer" project)
2425 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2426 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2428 * bug fix: it is now possible to have more than one subclass of
2429 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2430 (reported by Bruno Haible, Pascal Costanza and others)
2431 * bug fix: the dependent update protocol now works for generic
2432 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2433 and Pascal Costanza)
2434 * bug fix: condition-class instances corresponding to
2435 DEFINE-CONDITION forms are now created eagerly. (reported by
2436 Kalle Olavi Niemitalo on comp.lang.lisp)
2437 * bug fix: floating point printing is more accurate in some
2438 circumstances. (thanks to Simon Alexander)
2439 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2440 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2441 * bug fix: callbacks on OS X now preserve stack-alignment.
2442 (thanks to Cyrus Harmon)
2443 * enhancement: the x86-64 disassembler is much better at
2444 disassembling SSE instructions. (thanks to Lutz Euler)
2445 * enhancement: CHECK-TYPE on a variable now allows type-inference
2446 (thanks to Vincent Arkesteijn)
2447 * optimization: improved performance of EUC-JP external format.
2448 (thanks to NIIMI Satoshi)
2449 * optimization: performance improvements to IO on file streams of
2450 :ELEMENT-TYPE CHARACTER
2451 * optimization: much faster memory allocation on x86-64
2452 * optimization: faster garbage collections (latency and throughput)
2454 * optimization: faster bignum subtraction and division on x86 and x86-64
2455 (thanks to Lutz Euler)
2456 * optimization: more accurate type-inference for loops that use a
2457 floating point index variable or a negative step.
2459 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2460 * bug fix: add a workaround to SBCL looping infinitely at startup on
2461 Linux kernels with apparently buggy implementations of personality().
2462 (thanks to Svein Ove Aas)
2463 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2464 (thanks to David Lichteblau)
2465 * bug fix: local bindings shadow global symbol macros for
2466 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2467 * optimization: non-open coded uses of numeric comparison operators
2468 (e.g. >) no longer cons when called with more than one parameter
2469 on platforms supporting dynamic-extent allocation.
2470 * enhancement: saving cores with foreign code loaded is now supported
2471 on MIPS/Linux in addition to the previously supported platforms.
2472 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2473 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2474 * bug fix: division by zero in sb-sprof when no samples were collected
2475 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2476 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2477 (thanks to Alexander Kjeldaas)
2478 * new feature: ignoring the return values of destructive functions
2479 like NREVERSE signals a compile-time style-warning.
2480 (thanks to Kevin Reid)
2481 * new feature: the alignment of alien structure fields can be
2482 explicitly specified. (thanks to Cyrus Harmon)
2483 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2484 and dump core on SIGQUIT
2486 ** incompatible change: threads do not inherit values of specials
2487 from their parents (see manual)
2488 ** bug fix: threads stacks belonging to dead threads are freed by the
2489 next exiting thread, no need to gc to collect thread stacks anymore
2490 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2491 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2492 ** bug fix: dynamic variable and thread start related gc lossage
2493 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2495 * fixed some bugs revealed by Paul Dietz' test suite:
2496 ** SUBTYPEP is slightly more accurate on heinously complicated
2497 CONS types where some of the members have uncertain (in the
2498 NIL, NIL sense) type relationships to each other.
2500 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2501 no longer purified unless :PURIFY T is explicitly specified.
2502 ** Non-purified cores are significantly smaller than before
2504 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2505 * new feature: timers based on Zach Beane's excellent timer package
2506 * added support for the following external formats: koi8-u,
2507 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2508 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2509 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2510 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2511 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2512 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2513 * incompatible change: a threaded SBCL will no longer revert to
2514 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2515 * bug fix: interrupts are disabled until startup is complete; no
2516 more sigsegvs when receiving a signal to soon
2517 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2519 * bug fix: add a workaround for the memory randomization features in
2520 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2521 workaround will only be in effect on systems with the proc filesystem
2523 * bug fix: printing objects of type HASH-TABLE signals a
2524 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2526 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2527 have been running for over 50 days. (reported by Gilbert Baumann)
2528 * bug fix: the logic for getting names of functions gets less
2529 confused when confronded with alternate-metaclass
2530 funcallable-instances. (reported by Cyrus Harmon)
2531 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2532 consistent, even on internal alternate-metaclass objects.
2533 * bug fix: flush closure information collected by physical
2534 environment analysis prepass before the main pass. (bug reported
2536 * bug fix: compiler pack phase does not modify a hashtable, which is
2537 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2538 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2539 may be expanded. (reported by Alexander <malishev> on c.l.l)
2540 * bug fix: no more style-warnings when compiling code using LAST
2541 under high-SPEED low-SPACE settings. (reported by David Wallin
2543 * fixed some incompatibilities between SBCL's MOP and the MOP
2545 ** the METAOBJECT class is now implemented;
2546 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2547 STANDARD-OBJECT, as required;
2548 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2549 now compatible (as required by VALIDATE-SUPERCLASS); there
2550 remains a consistency requirement over the presence or absence
2551 of the FUNCTION class in the superclass list of finalized
2552 classes; see the manual for more details;
2553 ** the :AROUND method for COMPUTE-SLOTS on
2554 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2555 requested slot ordering.
2557 ** bug fix: parent thread now can be gc'ed even with a live
2559 ** bug fix: binding a special with PROGV to no value is not
2560 the same as that symbol not having been bound (thanks to
2562 ** bug fix: binding specials is thread safe (thanks to
2564 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2565 and SB-SPROF do not die with 'no handler for signal XX in
2566 interrupt_handle_now(..)' anymore
2567 ** bug fix: WITH-TIMEOUT works with multiple running threads
2568 * fixed some bugs revealed by Paul Dietz' test suite:
2569 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2570 the :method-class keyword argument.
2572 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2573 * new port: the Solaris operating system on x86 processors is now
2574 mostly supported, though some rough edges in the environment
2575 remain. (thanks to Daisuke Homma)
2576 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2577 space for its heap. (thanks to Thiemo Seufer)
2578 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2579 closures. (thanks to Thiemo Seufer)
2580 * minor incompatible change: eof selects abort in the debugger.
2581 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2582 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2584 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2585 deprecated, and will go away in a future revision of SBCL.
2586 * minor incompatible change: GC-ON and GC-OFF are no longer
2587 implemented with a counter, it does not matter how many times gc
2588 is switched on or off
2589 * bug fix: discriminating functions for generic function classes
2590 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2591 make invalid assumptions about method precedence order. (reported
2593 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2594 platforms. (thanks to Thiemo Seufer)
2595 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2596 * bug fix: correct pathname printing with printer escaping is on.
2597 (thanks to Kevin Reid)
2598 * bug fix: complex VOP definitions in "user-space" no longer trigger
2599 package locks. (reported by Zach Beane)
2600 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2601 for funcallable-instance functions, and is no different from
2603 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2604 characters in the current readtable. (reported by Nicholas Neuss)
2605 * bug fix: SUBTYPEP on various CONS types returns more a more
2606 accurate acknowledgment of its certainty.
2607 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2608 lists in some cases. This partially fixes bug 384.
2609 * flush all standard streams before prompting in the REPL and the
2611 * bug fix: signal handling and triggering gc do not conflict
2612 directly anymore, in particular a high frequency sb-sprof does
2613 not prevent gc from running
2614 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2615 approximation for timezone and DST information between the
2616 universal time epoch and the smallest negative 32-bit time_t.
2617 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2618 year 1899 so long as the encoded time is non-negative.
2619 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2620 the correct answer for non-constant rotate amounts when performing
2621 an inline 32-bit rotation.
2623 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2624 there is only one thread in the session
2625 ** bug fix: memory leak for streams created in one thread and
2626 written to in another
2627 ** bug fix: lockup when compiled with gcc4
2628 ** bug fix: race that allows the gc to be triggered when gc is
2630 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2631 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2633 ** bug fix: finished threads are gc'ed properly
2634 * fixed some bugs revealed by Paul Dietz' test suite:
2635 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2636 has arguments with a different set of applicable methods from
2637 the orignal arguments.
2638 ** The type error thrown by MAP now has a correct expected-type
2640 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2641 name a compiled function.
2642 ** Three MISC tests where a large bignum was improperly coerced to
2643 a float that couldn't represent that bignum during type
2644 derivation were fixed.
2645 ** SUBTYPEP can now handle types involving the negation of a
2646 list-form FUNCTION type.
2647 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2648 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2649 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2651 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2652 * New feature: Experimental support for bivalent streams: streams
2653 opened with :element-type :default now allow character and binary
2654 (unsigned-byte 8) I/O
2655 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2656 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2658 * bug fix: no more highly sporadic "couldn't check whether ~S is
2659 readable" when reading a stream and an interrupt hits in the middle
2660 of a select system call
2661 * compiler better recognizes complex arrays (reported by Eduardo
2663 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2664 for variables on SBCL built with linkage-tables. (reported by Luis
2666 * various error reporting improvements.
2667 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2668 (Thanks to Thiemo Seufer)
2669 * bug fix: nested reader invokations work correctly
2670 * bug fix: it is possible to have simultaneous references to foreign
2671 code and foreign data with the same name.
2673 ** added x86-64 support
2674 ** incompatible change: the threading api now works with thread
2675 objects instead of thread ids
2676 ** bug fix: threads are protected from signals and interruption when
2677 starting up or going down
2678 ** bug fix: a race where an exiting thread could lose its stack to gc
2679 ** bug fix: don't halt on infinite error in threads if possible
2680 ** fixed numerous gc deadlocks introduced in the pthread merge
2681 ** bug fix: fixed thread safety issues in read and print
2682 ** bug fix: debugger doesn't hang on session lock if interrupted at
2683 an inappropriate moment
2684 ** bug fix: run-program is now thread safe(r)
2685 ** bug fix: inner with-recursive-lock no longer releases the mutex
2686 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2687 * fixed some bugs revealed by Paul Dietz' test suite:
2688 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2689 EXPECTED-TYPE slots filled.
2690 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2692 ** MAKE-CONDITION accepts classes as type-designators.
2693 ** COMPILE may never return NIL.
2694 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2695 range before calling Unix time functions
2697 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2698 * numerous signal handling fixes to increase stability
2699 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2700 * minor incompatible change: we now correctly canonize default
2701 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2702 as per the MOP, rather than the historical (INITARG INITFUNCTION
2703 INITFORM). (reported by Bruno Haible)
2704 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2705 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2706 for more information.
2707 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2708 pathname is a directory pathname.
2709 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2710 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2712 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2713 :METACLASS argument in addition to a class name. (reported by
2714 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2715 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2716 (reported by Bruno Haible; patch from Gerd Moellmann)
2717 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2719 * bug fix: more cleanups to the floating point exception handling on
2720 x86-64 (thanks to James Knight)
2721 * bug fix: the compiler does not try to constant fold calls of
2722 COERCE and BIT-* functions when they return freshly constructed
2723 objects. (reported by Nikodemus Siivola and Paul Dietz)
2724 * optimization: improved the MIPS versions of generic (in the
2725 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2726 * optimization: direct conversion of (unsigned-byte 32) to floats on
2727 the PowerPC platform.
2728 * optimization: structure instances with raw slots now use less
2729 memory, and probably show better memory locality. (thanks to
2731 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2732 are treated as requests for stack allocation on the x86-64,
2733 Alpha-32, PPC and SPARC platforms.
2734 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2735 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2736 (thanks to Tony Martinez)
2738 ** gcing a dead thread can no longer lead to lockups
2739 ** threads block signals until they are set up properly
2740 ** errno is no longer shared by threads
2741 ** interrupt-thread restores the eflags register on x86
2742 ** fixed some lockups due to gc/thread interaction
2743 * fixed some bugs revealed by Paul Dietz' test suite:
2744 ** invalid dotted lists no longer raise a read error when
2745 *READ-SUPPRESS* is T
2746 ** signal an error if a symbol that names a declaration is used
2747 as the name of a type, or vice versa
2748 ** allow using the (declare (typespec var*)) abbreviation for
2749 (declare (type typespec var*)) with all type specifiers
2750 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2751 ** always return NIL from PPRINT-POP when OBJECT is NIL
2752 ** don't signal errors when pretty-printing malformed LABELS,
2753 FLET or MACROLET forms
2754 ** declarations in a DOLIST body are also in scope for the
2756 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2758 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2761 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2762 * fixed cross-compiler leakages that prevented building a 32-bit
2763 target with a 64-bit host compiler.
2764 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2765 opened with :IF-EXISTS :OVERWRITE.
2766 * fixed bug 281: error for an invalid qualifier in a short-form method
2767 combination method is not signalled until the faulty method is called.
2768 * bug fix: iteration variable type inferrer failed to deal with open
2769 intervals. (reported by Alan Shields)
2770 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2771 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2772 or more runtime options were provided to the sbcl binary.
2773 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2774 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2775 * optimization: there's now a fast-path for fixnum arguments in the
2776 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2777 * optimization: the code generated on x86-64 is more compact thanks
2778 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2779 * bug fix: floating-point exception handling now partly works on
2780 x86-64. (Thanks to James Knight)
2781 * improvement to the MIPS backend from Thiemo Seufer: C-style
2782 64-bit long long arguments and return values to alien functions
2784 * fixed some bugs revealed by Paul Dietz' test suite:
2785 ** the type-error signalled from WARN has a filled-in DATUM slot.
2786 ** the type-error required when a stream is not associated with
2787 a file has the stream as its datum.
2788 ** type-errors on single-floats on x86-64 no longer have
2789 :INVALID-OBJECT as the datum
2790 ** the type-errors signalled for invalid function names now have
2791 a correct expected type
2792 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2793 for structures defined with a :TYPE. Documentation strings for
2794 typed structures are no longer immediately discarded
2795 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2796 broadcast streams and synonym streams. FILE-LENGTH now also works
2797 on broadcast streams.
2799 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2800 * incompatible change: the --noprogrammer option, deprecated since
2801 version 0.7.5, has been removed. Please use the equivalent
2802 --disable-debugger option instead.
2803 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2805 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2806 inoperational for a while now) has been completely removed.
2807 * null lexical environments are now printed as #<NULL-LEXENV>,
2808 significantly reducing the amount of clutter in typical backtraces.
2809 * documentation on weak pointers, finalization, and after GC hooks
2810 has been added to the manual.
2811 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2812 as other specialized array types, is much faster. SUBSEQ and
2813 COPY-SEQ on such arrays have also been sped up.
2814 * optimization: EQL is now more efficient when at least other argument
2815 is known to be of type (OR FIXNUM (NOT NUMBER)).
2816 * fixed bug: the runtime is now less vulnerable to changes in the
2817 size of the SBCL object on OS X, and virtual memory is reserved for
2818 all spaces that need to be at a fixed address.
2819 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2820 * fixed bug: finalizers and after GC hooks that cause consing are now
2822 * fixed bug: compiler error messages and summaries are now printed to
2823 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2824 * fixed inference of the upper bound of an iteration variable.
2825 (reported by Rajat Datta).
2826 * fixed bug 211e: calling local functions with duplicated constant
2827 keyword argument no longer causes a bogus style warning about an
2829 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2830 ftype declaration to be disregarded. (reported by Dave Roberts)
2831 * fixed bug 373: caused by erronous compilation of references to alien
2832 variables in the runtime on ppc/darwin.
2833 * fixed bug 376: CONJUGATE type deriver.
2834 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2835 (reported by Baughn on #lisp)
2836 * a cross-compiler bug on non-x86 platforms has been identified and
2837 fixed. (thanks to Bruno Haible)
2838 * improvements to the MIPS runtime code for increased stability.
2839 (thanks to Thiemo Seufer)
2840 * increased the maximimum compact environment size to allow
2841 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2842 * partial workaround for bug 135: don't name the function we're
2843 calling for hairy cases of EVAL, so as not to accumulate one environment
2844 entry per call to EVAL. (reported by Kevin Reid)
2845 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2846 * optimization: type testing for non-vector arrays should be faster.
2847 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2849 * bug fix: setting 31st element of a bit vector to zero did not work
2851 * bug fix: redefining a class definition which failed due to a
2852 previous accessor / function clash now works (but see BUGS entry
2853 #380 for more problems in this area). (thanks to Zach Beane)
2854 * the long form of DEFINE-METHOD-COMBINATION disables method group
2855 checking when given a single method group with pattern *. (thanks
2857 * on x86 compiler supports stack allocation of results of simple
2858 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2859 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2860 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2861 * fixed some bugs related to Unicode integration:
2862 ** the restarts for recovering from input and output encoding
2863 errors only appear when there is in fact such an error to
2865 * fixed some bugs revealed by Paul Dietz' test suite:
2866 ** MISC.549 and similar: late transformation of unsafe type
2867 assertions into derived types caused unexpected code
2869 ** SCALE-FLOAT type deriver is less wrong.
2870 ** type derivers for EXP, LOG and similar functions compute result
2871 types for complex arguments better.
2872 ** (MISC.563) CONJUGATE type deriver works for very restricted
2874 ** out-of-line type testers for character strings are available.
2875 ** EQUAL compiler transform understands specialness of objects
2877 ** accessing double-floats stored on the stack now works on x86-64.
2878 ** debugger internals could sometimes create invalid lispobjs,
2879 resulting in GC crashes.
2880 ** MISC.548: type check weakening can convert required type into
2882 ** initialization forms for bindings are not in scope of free special
2885 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2886 * incompatible change: thread support for non-NPTL systems has
2887 been removed - locking is buggy and unreliable. A threaded
2888 SBCL build will now warn at startup and refuse to create
2889 new threads, unless futex support is detected in the kernel
2890 * incompatible change: the top level REPL now has only an ABORT
2891 restart associated with it, not TOPLEVEL and ABORT as it used to.
2892 TOP and TOPLEVEL are now available as debugger commands for
2893 returning to the top level.
2894 * incompatible change: forms evaluated in the REPL now use the
2895 global optimization policy.
2896 * incompatible change: user- and system-initialization files are
2897 no longer processed with LOAD, but by READ and EVAL; hence the
2898 global optimization policy, startup package, readtable, etc,
2900 * The .fasl file format number has been incremented because of
2901 various incompatible changes.
2902 * internal entry point details and argument counts no longer appear
2903 in backtraces unless explicitly requested by setting
2904 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2905 * built-in and standard functions no longer have names like "top
2906 level local call to FOO".
2907 * fixed bug 32: functions defined in non-null lexical environments
2908 now have more legible printed representation
2909 * fixed bug 33: functions defined in non-null lexical environemnts
2910 are now more amenable to inspection by INSPECT.
2911 * workaround for bug 354: XEPs no longer appear in backtraces unless
2912 explicitly requested.
2913 * fixed bug: receiving the signal which results from attempting to
2914 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2915 SIGBUS on other *BSDs) on architectures where the C stack is also
2916 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2917 to debugger confusion or wild instability. (reported by Cheuksan
2919 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2920 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2921 (reported by Lutz Euler)
2922 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2923 compiled code. (reported by Paul Dietz)
2924 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2925 specialized parameter to a method to something that is not TYPEP
2926 the specializer is now possible.
2927 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2928 face of package deletion.
2929 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2930 pathname. (reported by David Tolpin on c.l.l)
2931 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2932 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2933 STRING-STREAM and FILE-STREAM, respectively.
2934 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2935 than previously; in addition, its test suite is now run on build.
2936 (thanks to Luke Gorrie)
2937 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2938 * optimization: added a immediate representation for single-floats
2940 * fixed some bugs revealed by Paul Dietz' test suite:
2941 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2942 ** attempting to create a package with a colliding nickname causes
2943 correctable errors to be signalled.
2944 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2945 ** several x86-64 backend bugs related to sign-extension of immediate
2948 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2949 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2950 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2952 * fixed loading of multiply forward-referenced layouts.
2953 (thanks to Cheuksan Wang)
2954 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2955 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2956 (see COMPILE-FILE documentation for details of :PRINT option)
2957 * fixed bugs 19 and 317: fixed-format floating point printing is
2958 more accurate. This also fixes a bug reported by Adam Warner
2959 related to the ~@F format directive.
2960 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2962 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2963 dispatch table if the from-char is a dispatch macro character.
2964 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2965 by the wordsize no longer ignore the last word. (reported by Lutz
2967 * fixed bug in type checking of dynamic-extent variables. (reported
2969 * optimization: sequence traversal functions use their freedom to
2970 coerce function designators to functions.
2971 * optimization: code with many calls to CLOS methods specialized on
2972 CLOS classes has had redundant type checks removed.
2973 * optimization: added declarations to speed up operations that access
2974 the internal character database (for example STRING-UPCASE)
2975 * optimization: comparison operations between floats and sufficiently small
2976 fixnums no longer create extra rationals
2977 * fixed some bugs related to Unicode integration:
2978 ** portions of multibyte characters at the end of buffers for
2979 character-based file input are correctly transferred to the
2980 start of the buffer at the next read.
2981 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2982 passing it through to OPEN.
2983 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2984 argument given to internal calls to OPEN.
2985 ** the built-in comment readers (introduced by character sequences
2986 ";" and "#|") are more forgiving to encoding errors; they will
2987 STYLE-WARN and then attempt to resync the stream at a character
2988 boundary. (thanks to Teemu Kalvas)
2989 * fixed some bugs in the x86-64 port:
2990 ** Negative short int return values from c-calls are sign-extended
2992 ** The stack is aligned to 16-bytes for c-calls, as required by
2993 the ABI. (thanks to Cheuksan Wang)
2994 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2995 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2996 for enums. (thanks to Vincent Arkesteijn)
2997 ** Multiple small optimizations and bugfixes for floating point
2999 * fixed some bugs revealed by Paul Dietz' test suite:
3000 ** Space, Tab, Linefeed, Return and Page have the invalid
3001 secondary constituent character trait.
3002 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3004 ** WITH-INPUT-FROM-STRING should only update the index place on
3006 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3007 works more reliably.
3008 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3009 with one-dimensional arrays with fill pointers.
3010 ** TYPE-OF failed on a complex with an integer realpart and a
3012 ** compiler failure during type inference for the code of form
3013 (IF (EQL X (THE ...)) ...) (MISC.535).
3015 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3016 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3017 platform. The port supports 61-bit fixnums, large memory spaces
3018 and reloading shared object files.
3019 * enhancement: saving cores with foreign code loaded is now
3020 supported on ppc/Darwin in addition to the previously supported
3022 * enhancement: the statistical profiler now walks deeper into the
3023 call stack for more meaningful call-graphs and accrued time
3024 reports (x86/x86-64 only). It also now reports time spent in
3026 * enhancement: it is now possible to trace most individual methods
3027 of a generic function in addition to tracing the generic function
3029 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3031 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3032 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3033 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3034 produces an error. (thanks to Vincent Arkesteijn)
3035 * bug fix: NAMESTRING on pathnames with :WILD components in their
3036 directories works correctly. (thanks to Artem V. Andreev)
3037 * fixed bug 125: compiler preserves identity of closures. (reported
3039 * bug fixed: functions with &REST arguments sometimes failed with
3040 "Undefined function" when compiled with (DEBUG 3). (reported by
3042 * bug fix: overflow during compiling of setting element of a bit
3043 vector with constant index and value. (reported by Timmy Douglas)
3044 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3045 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3046 * on x86 compiler partially supports stack allocation of dynamic-extent
3048 * GO and RETURN-FROM do not check the extent of their exit points
3049 when compiled with SAFETY 0.
3050 * fixed some bugs related to Unicode integration:
3051 ** encoding and decoding errors are now much more robustly
3052 handled; it should now be possible to recover even from invalid
3053 input or output to the terminal. (thanks to Teemu Kalvas)
3054 ** provided a first cut at implementing STRING-TO-OCTETS and
3055 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3056 ** altered the SB-MD5 contributed module slightly, changing the
3057 interface just enough for it to be supportable for builds where
3058 lisp characters are not eight bits.
3059 * fixed some bugs revealed by Paul Dietz' test suite:
3060 ** the FORMATTER-generated functions for ~V[ conditionals require
3061 the correct number of arguments.
3062 ** READ-FROM-STRING returns the mandated second value when applied
3063 to displaced strings.
3064 ** the #\Rubout and #\Backspace characters are treated as invalid
3065 constituent characters by the tokenizer.
3067 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3068 * new feature: reloading changed shared object files with
3069 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3070 * new feature: references to foreign variables and functions
3071 can now be compiled and loaded before the corresponding shared
3072 object file is loaded, as long as the foreign definitions are
3073 available at runtime.
3074 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3075 supported. (thanks to Dan Debertin)
3076 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3077 just keywords. (thanks to Vincent Arkesteijn)
3078 * fixed bug #331: structure-class instances corresponding to
3079 DEFSTRUCT forms are now created eagerly.
3080 * fixed bug #345: backtraces from calls to undefined functions work
3081 on x86 as well. Related bug #61 is now also partially fixed on x86
3082 (backtraces from throws to unknown catch tags.)
3083 * bug fix: lambda-list parsing is now stricter vrt. order and number
3084 of lambda-list keywords.
3085 * bug fix: as specified by AMOP, an error is signalled if a
3086 class-option appears multiple times in a DEFCLASS form. (reported
3088 * bug fix: RANDOM can be compiled when the compiler derives the type
3089 of its numeric argument as a disjoint set of small integers.
3090 (reported by Paul Dietz)
3091 * bug fix: starting a core saved with shared objects loaded when
3092 those objects are not available no longer causes threaded SBCL to
3093 hang. (reported by Sean Ross)
3094 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3096 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3097 argument, which must always be NIL. (reported by Kalle Niemitalo)
3098 * bug fix: printing 1.0d+23 no longer results in an error.
3099 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3100 * bug fix: structure slot setters preserve evaluation order. (thanks
3102 * fixed some bugs related to Unicode integration:
3103 ** RUN-PROGRAM can allow its child to take input from a Lisp
3104 stream. (reported by Stefan Scholl)
3105 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3106 locales. (reported by Ken Causey)
3107 * fixed some bugs revealed by Paul Dietz' test suite:
3108 ** INCF, DECF and REMF evaluate their place form as specified in
3110 ** FORMATTER expands ~{ ~} iteration directives with V or #
3111 parameters correctly.
3112 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3113 consequent uses no arguments correctly.
3114 ** the system has a partial understanding of the (COMPLEX RATIO)
3116 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3119 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3120 * new feature: a build-time option (controlled by the :SB-UNICODE
3121 keyword feature, enabled by default) for building the system with
3122 support for the entire 21-bit character space defined by the
3124 * new feature: the system now has rudimentary external-format
3125 support; the primary user-visible change at this time is that
3126 characters with the high bit set (such as lower-case-e-acute) will
3127 print correctly to a terminal in a UTF-8 environment.
3128 * minor incompatible change: BASE-CHAR no longer names a class;
3129 however, CHARACTER continues to do so, as required by ANSI.
3130 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3131 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3132 has been moved to the SB-EXT package (temporarily re-exported from
3134 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3135 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3137 * fixed bug #351: better error-handlind and reporting for malformed
3139 * fixed bug #350: bignum-printing is now more memory-efficient,
3140 allowing printing of very large bignums, eg. (expt 2 10000000).
3141 (reported by Bruno Haible)
3142 * fixed bug #302: better primitive-type selection for intersection
3144 * fixed bug #308: non-graphic characters now all have names, as
3145 required. (reported by Bruno Haible)
3146 * bug fix: redefining a class with different superclasses now correctly
3147 removes it from the direct-subclasses of its previous superclasses.
3148 (reported by David Morse)
3149 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3150 new value now works. (reported by Bruno Haible)
3151 * bug fix: correct canonicalization of multiple non-standard slot
3152 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3153 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3154 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3155 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3156 now exists, an signals an error.
3157 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3158 during macroexpansion for non-iteration variables as well. (reported
3159 by Bruno Haible for CMUCL)
3160 * bug fix: Cyclic structures and unprintable objects in compiler
3161 messages no longer cause errors. (reported by Bruno Haible)
3162 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3163 and READ-FROM-STRING all now return a primary value of NIL if
3164 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3165 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3166 (reported by Bruno Haible for CMUCL)
3167 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3168 do not designate a condition. (reported by Bruno Haible for
3170 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3171 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3172 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3173 permitting resolution in favour of any of the conflicting symbols.
3174 (reported by Bruno Haible for CMUCL)
3175 * bug fix: EQUAL compiler optimizations is less aggressive on
3176 strings which can potentially compare true despite having distinct
3177 specialized array element types.
3178 * bug fix: unit enumerations can be defined without dividing by
3179 zero. (thanks to Vincent Arkesteijn)
3180 * FORMAT compile-time argument count checking has been enhanced.
3181 (report from Bruno Haible for CMUCL)
3182 * a partial workaround for the bug 262: the compiler does not try to
3183 inline-expand a local function doing RETURN-FROM from a deleted
3184 BLOCK. (thanks to Peter Denno for the bug report and to David
3185 Wragg for the simple test case)
3186 * fixed some bugs revealed by Paul Dietz' test suite:
3187 ** RENAME-PACKAGE allows all package designators as new package
3189 ** constraint propagation and lambda variable substitution are
3190 more cautious in dealing with partially deleted code.
3191 ** compiler sometimes lost reoptimization passes.
3192 ** CERROR, given a condition as condition designator, passes its
3193 remaining arguments to the continue format control without
3195 ** Case-altering FORMAT directives work correctly on non-ASCII
3197 ** The REAL type specifier handles bounds outside the floating
3198 point ranges without signalling FLOATING-POINT-OVERFLOW.
3199 ** Functions with IR1-transformations can create intercomponent
3200 references to global functions.
3201 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3203 ** FORMAT ~R treats a nil value for its first parameter correctly.
3205 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3206 * enhancement: saving cores with foreign code loaded is now
3207 supported on x86/NetBSD and sparc/Linux in addition to the previously
3208 supported platforms.
3209 * bug fix: on some platforms repeated installations caused multiple
3210 copies of HTML documentation to be installed -- should not happen
3211 any more. (reported by Stefan Scholl)
3212 * bug fix: parsing self-recursive alien record types multiple times
3213 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3214 original patch by Helmut Eller for CMUCL)
3215 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3216 (thanks to Richard Kreuter)
3217 * bug fix: defining classes whose accessors are methods on existing
3218 generic functions in other (locked) packages no longer signals
3219 bogus package lock violations. (reported by François-René Rideau)
3220 * bug fix: special variables as DEFMETHOD parameters no longer have
3221 associated bogus type declarations. (reported by David Wragg and
3223 * bug fix: read-write consistency on streams of element-type
3224 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3225 * bug fix: redefiniton of the only method of a generic function with
3226 no DEFGENERIC no longer emits a full WARNING. In addition,
3227 redefinition of generic functions with no DEFGENERIC to an
3228 incompatible lambda list now signals an error. (thanks to Zach
3230 * bug fix: DEFGENERIC now works even when there's a function of the
3231 same name in an enclosing lexical environment. (thanks to Zach
3233 * fixed compiler failure, caused by instrumenting code during
3234 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3235 * optimization: added loop analysis and improved register allocation
3236 * fixed some bugs revealed by Paul Dietz' test suite:
3237 ** POSITION on displaced vectors with non-zero displacement
3238 returns the right answer.
3239 ** (SIMPLE-STRING) is a valid type specifier for sequence
3241 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3243 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3244 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3246 ** The justification version of the FORMAT ~< directive treats
3247 non-zero minpad parameter correctly.
3249 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3250 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3251 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3252 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3253 the supported interface.
3254 * new feature: Single-stepping of code compiled with DEBUG 2 or
3255 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3256 * new feature: saving cores with foreign code loaded is now
3257 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3258 Timothy Moore's work for CMUCL)
3259 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3260 parameters to * instead of NIL if no initform is supplied.
3261 (reported by Johan Bockgaard)
3262 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3263 correctly when FUNCALL appears as the car of the form. Note:
3264 despite this FUNCALL forms are not currently subject to
3265 compiler-macro expansion. (port of Raymond Toy's fix for the
3266 same from CMUCL, reported by Johan Bockgaard)
3267 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3268 (thanks for Teemu Kalvas)
3269 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3270 case instead of terminating the iteration (thanks for Julian
3271 Squires, Sean Champ and Raymond Toy)
3272 * bug fix: incorrect expansion of defgeneric that caused a style
3273 warning. (thanks for Zach Beane)
3274 * bug fix: slot accessor effective method computation works properly
3275 for classes with multiple non-standard applicable methods on
3276 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3277 * on x86 compiler supports stack allocation of results of LIST and
3278 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3279 CMUCL implementation by Gerd Moellmann)
3280 * fixed some bugs revealed by Paul Dietz' test suite:
3281 ** FORMAT strings with both the ~<~:;~> form of the justification
3282 directive and pretty-printing directives cause an error.
3284 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3285 * incompatible change: the internal functions
3286 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3287 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3288 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3289 instead of the old functions.
3290 * new feature: on platforms where "dladdr" is available foreign
3291 function names now appear in backtraces. (based on Helmut Eller's
3293 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3294 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3296 * documentation: ASDF manual is now distributed with SBCL.
3297 * bug fix: SBCL can now load its contributed modules with REQUIRE
3298 even if the system-provided entries have been removed from
3299 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3301 * bug fix: backtraces involving undefined functions or assembly
3302 routines are more informative. (thanks to Brian Downing)
3303 * bug fix: mutually referent alien structures now work correctly.
3304 (reported by Rick Taube)
3305 * bug fix: structures defined by WITH-ALIEN can be referred to
3306 within other definitions in the same WITH-ALIEN.
3307 * bug fix: division operators (MOD, TRUNCATE and the like) with
3308 constant zero divisors and integer dividends no longer generate
3310 * bug fix: provide default methods for INPUT-STREAM-P and
3311 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3312 * bug fix: improve the detection and resolution of MOP metacycles
3313 (where effective method computation depends on the generic function
3314 having its effective method computed). (reported by Bruno Haible)
3315 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3316 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3317 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3318 * bug fix: pathnames with relative directory components can be
3319 represented relative to default pathnames.
3320 * optimization: in taking the GCD of bignums, reduce the two bignums
3321 to approximately the same size (using Euclid's algorithm) before
3322 applying the more sophisticated binary GCD. (thanks to Juho
3324 * optimization: COUNT on bitvectors now operates word-at-a-time.
3325 * optimization: ASH with a positive, but not necessarily constant,
3326 (leftwards) shift, when in a modular context, is compiled to a
3328 * fixed some bugs revealed by Paul Dietz' test suite:
3329 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3330 if the corresponding argument is NIL.
3331 ** FORMAT directives accepting a minpad parameter treat negative
3333 ** literal commas as character parameters to FORMAT directives are
3335 ** literal spaces directly after ~<Newline> directives within a
3336 format-logical-block (~:< ~@:>) do not induce :FILL-style
3337 conditional newlines.
3338 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3339 as specified: it no longer includes conditional newlines).
3340 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3342 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3343 :PER-LINE-PREFIX argument does not evaluate to a string.
3345 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3346 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3347 the manual for details; for now, package locks can be disabled by
3348 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3349 if no major problems are found then it is likely that they will be
3350 compiled in unconditionally.
3351 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3352 unsupported operators on all platforms. To load a shared library
3353 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3354 object file, link it into a shared library outside of SBCL and
3355 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3357 * bug workaround: ROOM T and the GC were not working together
3358 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3359 reporting facility aren't preserved. That reporting has been
3360 disabled, so now until and unless someone figures out how to make it
3361 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3362 * minor incompatible change: as threatened around sbcl-0.8.0, the
3363 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3364 The symbols are also exported from SB-PCL for backwards
3365 compatibility, but more so than before SB-PCL should be treated as
3366 an implementation-internal package.
3367 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3369 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3370 It is known as of this release not to work on the Alpha, however.
3371 * fixed bug #167: errors signalled due to illegal syntax in method
3372 bodies are now more legible.
3373 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3374 designators and can hence be used with TYPEP.
3375 * fixed bug #333: CHECK-TYPE now ensures that the type error
3376 signalled, if any, has the right object to be accessed by
3377 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3378 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3379 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3381 * fixed bug #334: programmatic addition of slots using specialized
3382 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3383 and :ALLOCATION :CLASS slots.
3384 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3385 float exponents. (rereported by Peter Seibel)
3386 * fixed a bug: #\Space (and other whitespace characters) are no
3387 longer considered to be macro characters in standard syntax by
3388 GET-MACRO-CHARACTER.
3389 * fixed bug: initialization of condition class metaobjects no longer
3390 causes an instance of the condition to be created. (reported by
3392 * fixed bug: it is now possible to have slots such that
3393 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3394 description is neither :INSTANCE nor :CLASS.
3395 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3396 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3397 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3398 non-standard SLOT-DEFINITION-ALLOCATION values.
3399 * fixed bugs: various race conditions handling exiting threads.
3400 CL-PPCRE's thread torture test now passes.
3401 * fixed arguably-a-bug: GC time proportional to number of threads in
3402 system even when most of them are idle
3403 * optimization: improved performance of BIT and SBIT on bit-vectors.
3404 * .fasl file incompatibility: The fasl file version number has
3405 been incremented because of changes associated with package locks.
3407 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3408 * minor incompatible change: the system no longer provides
3409 optimization hints (conditions which are TYPEP
3410 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3411 mode; these hints are still emitted when higher SPEED optimization
3413 * new contrib module: a sampling profiler (profiling by statistical
3414 sampling, rather than by instrumenting functions) is available as
3415 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3416 * the behaviour of the standard function ED is now customizeable by
3417 third parties through a hook variable: see ED's documentation
3418 string for information on the protocol.
3419 * the compiler no longer emits efficiency notes for (FUNCALL X)
3420 when the type of X is uncertain under default optimization
3422 * fixed bug 276: mutating a binding of a specialized parameter to a
3423 method to something that is not TYPEP the specializer is now
3425 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3426 exhibit the required behaviour on the x86 platform. (thanks to
3427 Peter van Eynde, Eric Marsden and Bruno Haible)
3428 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3429 even for difficult arguments. (reported by Peter Graves)
3430 * fixed bug 141a: the backquote printer now descends quoted
3432 * fixed another bug in backquote printing: no more destructive
3433 modification of the form's list structure. (reported by Brian
3435 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3436 move between its address being taken and the call to
3437 interrupt_thread, fixing a crashing race condition.
3438 * the SB-POSIX contrib implementation has been adjusted so that it
3439 no longer exhibits ridiculously poor performance when constructing
3440 instances corresponding to C structs.
3442 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3443 * minor incompatible change: the sb-grovel contrib now treats C
3444 structures as alien (in the sense of SB-ALIEN) objects rather than
3445 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3446 has implications for memory management of client code
3447 (sb-grovel-returned objects must now be manually managed) and for
3448 type safety (alien objects now have full types).
3449 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3450 used to control emission of compiler diagnostics, rather than the
3451 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3452 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3453 quality should be considered deprecated.
3454 * install.sh now installs the user manual as well
3455 * (not quite a new documentable feature, but worth considering in
3456 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3457 beginnings of a semantically meaningful condition hierarchy is
3458 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3460 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3461 designator as the defaults argument.
3462 * fixed bug: Displaced arrays whose displaced-to array has become
3463 too small now cause ARRAY-DIMENSION to signal an error, providing
3464 for safer bounds-checking. (reported by Bruno Haible)
3465 * fixed bug: DEFCLASS slot definitions with identical :READER and
3466 :WRITER names now signal a reasonable error. (reported by Thomas
3468 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3470 * fixed bug: Invalid slot specification errors now print correctly.
3471 (thanks to Zach Beane)
3472 * fixed bug 320: Shared to local slot value transfers in class
3473 redefinitions now happen corrently from superclasses as
3474 well. (reported by Bruno Haible)
3475 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3477 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3478 improper lists correctly. (reported by Bruno Haible)
3479 * fixed bug 313: source-transform for <fun-name> was erroneously
3480 applied to a call of a value of a variable with name <fun-name>.
3481 (reported by Antonio Menezes Leitao)
3482 * fixed bug 307: The obsolete instance protocol ensures that
3483 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3484 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3485 remove dead unknown-values globs from the middle of the stack.
3486 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3487 easier to resume long computations after using *BREAK-ON-SIGNALS*
3488 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3489 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3490 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3491 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3492 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3493 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3495 * fixed a (fairly theoretical) bug in string printing: if
3496 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3497 does not have array-element-type equal to the most general string
3499 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3500 function name. (thanks to Nikodemus Siivola)
3501 * fixed bug: compile-time format string checker failed on
3502 non-closed ~{. (reported by Thomas F Burdick)
3503 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3504 don't warn on legal loop code involving more than one aggregate
3505 boolean. (thanks to Nikodemus Siivola)
3506 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3507 in keyword position to MAKE-PACKAGE was not being reported as
3509 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3510 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3512 * fixed bugs 280 and 312: the checking for multiple definitions in a
3513 file is less likely to become confused by uses of inline
3515 * fixed bug: the #S reader macro performs the keyword coercion
3516 specified for slot names. (reported by Kalle Niemitalo)
3517 * fixed bug: lambda lists may contain symbols whose names start with
3518 & but are not lambda-list-keywords; their occurrence triggers a
3520 * fixed bug 321: define-method-combination argument lambda lists do
3521 not cause invalid code to be generated when &optional or &aux
3522 variables have default values. (reported by Bruno Haible)
3523 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3524 have CLOS classes; this appears also to have fixed reported
3525 instability in stack exhaustion detection.
3526 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3527 MUFFLE-WARNING when no associated restart is present is now
3529 * optimization: rearranged the expansion of various defining macros
3530 so that each expands into only one top-level form in a
3531 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3533 * optimization: used a previously little-used slot in symbols to
3534 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3536 * fixed some bugs revealed by Paul Dietz' test suite:
3537 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3539 ** Fixed an optimization bug related to inheritance of initforms
3540 from local to shared slots.
3541 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3542 ** CAST optimizer forgot to flush argument derived type.
3543 ** print/read consistency on floats is now orders of magnitude
3544 more likely. (thanks also to Bruno Haible for a similar report
3546 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3547 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3548 for objects of type REAL. Make it so.
3549 ** SXHASH is specified (infelicitously) to respect similarity,
3550 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3551 it so. (thanks to Markus Ziegler)
3552 ** on the Alpha, the compiler succeeds in compiling functions
3553 returning a known number of arguments greater than 63.
3554 ** fixed handling of invalid NIL arguments in keyword position
3556 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3558 ** provided a readably-printable representation for RANDOM-STATE
3560 ** ensured that pathnames, where they have a namestring, always
3561 print using #P"..." syntax.
3563 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3564 * Support for the forthcoming 2.0 version of the NetBSD kernel
3565 running on x86 hardware has been added. (thanks to Perry
3566 E. Metzger most immediately, and others for their past work)
3567 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3568 current release version; SBCL's OpenBSD support had been broken
3569 since about the time of OpenBSD's switch to ELF binary format.)
3570 * [placeholder for DX summary]
3571 ** user code with &REST lists declared dynamic-extent, under high
3572 speed or space and low safety and debug optimization policy.
3573 * The manual has been converted to Texinfo format and the debugger
3574 chapter from the cmucl manual has been added.
3575 * A facility has been added to extract documentation strings from
3576 sbcl and store them as Texinfo-formatted snippets for inclusion in
3577 the manual (via Texinfo's @include directive)
3578 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3579 the test case to Dave Roberts)
3580 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3581 pointers. (reported by Sean Ross)
3582 * bug fix: PROFILE output is printed nicely even for large numerical
3583 values. (thanks to Zach Beane)
3584 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3585 greater than 32 handle EOF correctly.
3586 * bug fix: on X86 an immediate argument of the IMUL instruction is
3587 correctly printed in disassembly. (thanks to Lutz Euler)
3588 * bug fix: class slots in redefined classes preserve their old
3589 values. (thanks to Bruno Haible and Nikodemus Siivola)
3590 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3591 succeeds. (reported by Marco Baringer)
3592 * fixed some bugs revealed by Paul Dietz' test suite:
3593 ** READ-SEQUENCE now works on ECHO-STREAMs.
3594 ** RATIONALIZE works more according to its specification. (thanks
3597 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3598 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3599 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3600 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3601 should matter to you only if you rebind the printer control
3602 variables and then find you want different bindings in the
3603 debugger than in the ordinary execution of your program.)
3604 * The runtime build system has been tweaked to support building
3605 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3606 assembler and linker. (thanks to Nikodemus Siivola)
3607 * Unbound, undefined, undeclared variables now trigger full
3608 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3609 more often programmer error than deliberate exploitation of undefined
3611 * optimization: the hash algorithm for strings has changed to one
3612 that is less vulnerable to spurious collisions. (thanks to Juho
3614 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3615 needless bounds checking. (thanks to Juho Snellman)
3616 * optimization: implemented multiplication as a modular
3617 (UNSIGNED-BYTE 32) operation on the PPC backend.
3618 * fixed some bugs revealed by Paul Dietz' test suite:
3619 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3621 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3622 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3623 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3625 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3627 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3629 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3630 their output stream on EOF from read.
3631 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3632 have been read to end-of-file.
3633 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3635 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3636 description of determination of which consecutive characters
3638 ** Printing the "Space" character with escaping on now yields "#\\ ",
3639 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3640 ** Reading floating-point numbers with *READ-BASE* set to a number
3641 less than 10 works correctly.
3642 ** Reading floating-point numbers with *READ-BASE* set to a number
3643 more than 10 works correctly.
3644 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3645 the readtable currently in effect.
3647 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3648 * minor incompatible change: parsing of namestrings on a physical
3649 (Unix) host has changed; numbers after the final #\. in a
3650 namestring are no longer interpreted as a version field. This is
3651 intented to be largely invisible to the user, except that the
3652 meaning of the namestring "*.*.*" has changed: it now refers to a
3653 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3654 should usually be replaced by
3655 (make-pathname :name :wild :type :wild :version :wild)
3656 with the added benefit that this is more likely to be portable.
3657 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3658 option to OPEN now signals an error if the file being opened
3659 exists; this may have an impact on existing code.
3660 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3661 signals received, on the PowerPC platforms (both Linux and
3662 Darwin). (thanks to Pierre Mai for pointing out the location of
3664 * several fixes on OS X: The system now builds and runs cleanly on
3665 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3666 (thanks to Brian Mastenbrook)
3667 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3668 second-resolution: integer multiples of 1/3600 between -24 and 24.
3669 (thanks to Vincent Arkesteijn)
3670 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3671 type when called with 1 argument; PEEK-CHAR checked type of
3672 PEEK-TYPE only after having read first character from a
3673 stream. (reported by Peter Graves)
3674 * bug fix: the garbage collector now has much better locality
3675 behaviour, and in particular no longer treats all memory as being
3676 exhausted when many small objects point to each other in a deeply
3678 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3679 recognized as being TYPEP their class.
3680 * bug fix: the PUSHNEW documentation string has been corrected.
3681 (thanks to Vincent Arkesteijn)
3682 * bug fix: defaulting of the value for the last of an atypically
3683 large number of multiple values being bound was not being
3684 performed correctly on the Alpha or PPC platforms
3685 * optimization: implemented multiplication as a modular
3686 (UNSIGNED-BYTE 32) operation on the x86 backend.
3687 * optimization: SEARCH on simple-base-strings can now be open-coded.
3688 (see also contrib/compiler-extras.lisp for inspiration for
3689 teaching the compiler about the Boyer-Moore algorithm).
3690 * value, returned by MAX (and MIN) called with several EQUALP, but
3691 not EQL, arguments now does not depend on compiler settings.
3692 * fixed some bugs revealed by Paul Dietz' test suite:
3693 ** in stack analysis liveness information is propagated from
3694 non-local entry points.
3695 ** pathwise CAST removing failed when the CAST node did not start
3697 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3698 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3700 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3701 host is already defined.
3702 ** RENAME-FILE works on streams instead of signalling an internal
3704 ** PEEK-CHAR uses the current readtable when determining whether
3705 or not a character is whitespace.
3706 ** MERGE-PATHNAMES handles the case when the pathname does not
3707 specify a name while the default-pathname specifies a version.
3708 ** Pathnames now stand a better chance of respecting print/read
3710 ** Attempting to use standardized file system operators with a
3711 pathname with invalid :DIRECTORY components signals a
3713 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3715 ** DIRECTORY on logical pathnames is more correct.
3716 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3717 signal a TYPE-ERROR if their argument is not a stream.
3718 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3719 designator argument does not designate a stream.
3720 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3721 examining the synonym.
3722 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3724 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3725 element-type larger than ([UN]SIGNED-BYTE 32).
3727 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3728 * When built with the :SB-FUTEX feature, threaded builds now take
3729 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3730 for faster/more reliable mutex and condition variable support.
3731 * Incompatible change (but one you probably shouldn't have been using
3732 anyway): the interface and code for arbitrating between multiple
3733 threads in the same user session has been redesigned.
3734 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3735 error when called without an explicit environment argument.
3736 (thanks to Nikodemus Siivola)
3737 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3738 confused about their position. (thanks to Adam Warner and Gerd
3740 * bug fix: Pretty printing backquoted forms with unquotations in the
3741 argument list position of various code constructs such as LAMBDA
3742 now works correctly. (reported by Paul Dietz)
3743 * bug fix: Pretty printing unquotations no longer loses all
3744 stream position information.
3745 * optimization: performance of string output streams is now less
3746 poor for multiple small sequence writes.
3747 * optimization: performance of CSUBTYPEP in the presence of complex
3748 expressions involving CONS and NOT many times has been improved.
3749 (reported by Paul Dietz)
3750 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3752 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3753 streams for the REPL, for the debugger, and so on. (thanks to
3755 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3756 * fixed some bugs revealed by Paul Dietz' test suite:
3757 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3758 is ignored if it is too small, rather than propagating through
3759 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3760 ** extremely complex negations of CONS types were not being
3761 sufficiently canonicalized, leading to inconsistencies in
3763 ** VALUES tranformer lost derived type.
3765 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3766 * fixed a bootstrapping bug: the build process no longer assumes
3767 that the various BOOLE-related constants have the same value in
3768 host and target lisps. (noted by Paul Dietz' test suite on an
3769 SBCL binary built from CLISP)
3770 * The system can now be dynamically linked on the MIPS platform,
3771 which enables dynamic loading of foreign code from Lisp. (thanks
3772 to Ralf Baechle for discussions on the MIPS ABI)
3773 * The system now records debugging information for its own source
3774 files in a filesystem-position-independent manner, relative to
3775 the "SYS" logical host.
3776 * fixed a compiler bug: MV-LET convertion did not check references
3777 to the "max args" entry point. (reported by Brian Downing)
3778 * tweaked disassembly notes to be less confident about proclaiming
3779 some instruction as an LRA. (thanks to Brian Downing)
3780 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3781 now each have their own history, command character, and other
3782 characteristics. (thanks to David Lichteblau)
3783 * fixed some bugs revealed by Paul Dietz' test suite:
3784 ** compiler failure in compiling LOGAND expressions including a
3786 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3787 shift greater than 32.
3788 ** FLUSH-DEST did not mark blocks for type check regeneration.
3789 ** HANDLER-CASE failed to accept declarations in handler clauses
3790 in some circumstances.
3792 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3793 * New code in contrib/sb-introspect (still probably not entirely
3794 stable yet) provides some support for smart Lisp development
3795 environments like SLIME.
3796 * The conditions signalled for errors occurring when loading .fasl
3797 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3798 in a way which should help ASDF recover gracefully.
3799 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3800 stuff has been cleaned up. If you code contrib/ stuff, this might
3801 affect you, and you can look at contrib/README, contrib/STANDARDS,
3802 and/or the 0.8.4.27 diff to check.
3803 * In full calls the compiler now does not generate checks for declared
3804 argument types for all arguments.
3805 * various threading fixes
3806 ** and some experimental patches which didn't make it into
3807 the main tree for this release, but which are shipped in
3808 contrib/experimental-thread.patch as a possible fix for some
3809 failures (deadlock, spinning...) in GC-intensive multithreaded
3811 * fixed PPC build problem (source code incompatibility of different
3812 library versions): added offsetof() hackery which attempts to divine
3813 where glibc maintainers put uc_mcontext today
3814 * fixed bug 282: compiler does not trust type assertions while passing
3815 arguments to a full call.
3816 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3817 &OPTIONAL VALUES type parameter.
3818 * fix bug 214: algorithm for noting rejected templates is now more
3819 similar to that of template seletion. (also reported by rydis on
3821 * fixed bug 141b: printing backquoted information readably and prettily
3822 inserts a space where necessary.
3823 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3824 (CHARACTER 10) are now reported as errors, rather than propagated
3825 as unknown types. (reported by piso on #lisp)
3826 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3827 with values NIL and :ERROR. (thanks to Milan Zamazal)
3828 * fixed bug 191c: CLOS now does proper keyword argument checking as
3829 described in CLHS 7.6.5 and 7.6.5.1.
3830 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3831 longer raise an error; further, using a list as a for-as-arithmetic
3832 counter now raises a meaningful error.
3833 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3834 now understood by sequence creation functions such as MAKE-SEQUENCE
3836 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3837 a STRING-INPUT-STREAM.
3838 * compiler enhancement: SIGNUM is now better able to derive the type
3840 * type declarations inside WITH-SLOTS are checked. (reported by
3842 * fixed some bugs revealed by Paul Dietz' test suite:
3843 ** incorrect optimization of TRUNCATE for a positive first
3844 argument and negative second.
3845 ** compiler failure in let-convertion during flushing dead code.
3846 ** compiler failure while deriving type of TRUNCATE on an
3847 interval, containing 0.
3848 ** ASH of a negative bignum by a negative bignum count now returns
3850 ** intersection of CONS types now canonicalizes properly, fixing
3851 inconsistencies in SUBTYPEP.
3853 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3854 * incompatible change: The --disable-debugger command line
3855 option now clobbers the debugger at a more fundamental
3856 level, by redefining #'INVOKE-DEBUGGER instead of by
3857 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3858 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3859 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3860 enter the debugger REPL and then suffer recursive errors
3861 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3862 while under the new system, BREAK in --disable-debugger mode
3863 terminates the system just as an unhandled error would.
3864 * fixed compiler performance when processing loops with a step >1;
3865 * bug fix: DOCUMENTATION now retrieves generic function
3866 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3867 support has been systematized, and now supports the methods
3868 specified by ANSI, along with a default method and a method for
3869 slot documentation. (reported by Nathan Froyd)
3870 * bug fix: effective methods associated with a generic function are
3871 no longer cached over a change of that generic function's method
3872 combination. (reported by Andreas Fuchs)
3873 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3874 names a non-existent directory. (thanks to Andreas Fuchs)
3875 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3876 the PPC platform, lead to stack corruption; this has been fixed.
3877 (reported by Rainer Joswig)
3878 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3879 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3880 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3881 arithmetic in general, is now much more reliable on the PPC
3883 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3884 platform now returns the right answer.
3885 * optimization: restored some effective method precomputation in
3886 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3887 precomputation is now tunable.
3888 * optimization: compiler-internal data structure use has been
3889 reviewed, and changes have been made that should improve the
3890 performance of the compiler by about 20%.
3891 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3892 simple-base-strings and simple-bit-vectors is improved.
3893 * optimization: the optimization of 32-bit logical and arithmetic
3894 functions introduced in version 0.8.3 on the x86 has been
3895 implemented on the mips, ppc and sparc platforms; an
3896 implementation of the same facility, but for 64-bit arithmetic,
3897 has been added for the alpha.
3898 * microoptimization: the compiler is better able to make use of the
3899 x86 LEA instruction for multiplication by constants.
3900 * bug fix: in some situations compiler did not report usage of
3901 generic arithmetic in (SPEED 3) policy.
3902 * bug 145b fix: compiler used wrong type specifier while converting
3903 MEMBER-types to numeric.
3904 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3906 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3907 index argument now works properly on the Alpha platform.
3908 * bug fix: floating point exception treatment on the Alpha platform
3910 * bug fix: FILE-POSITION works much better on string input and
3911 output streams. (thanks to Nikodemus Siivola)
3912 * bug fix: many threading/garbage collection symptoms sorted.
3913 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3914 might be pseudo-atomic.
3915 * internal change: Stopping for GC is now done with signals not
3916 ptrace. GC is now done in whichever thread wanted it, instead of
3918 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3920 * bug fix: result form in DO is not contained in the implicit
3922 * incompatible change: ICR structure is changed; the value part of
3923 CONTINUATION is now called LVAR; corresponding functions are
3924 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3925 * added type deriver for ISQRT (thanks to Robert E. Brown).
3926 * bug fix: better support for loading from the command line when an
3927 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3929 * fixed some bugs revealed by Paul Dietz' test suite:
3930 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3931 ** ROUND and FROUND now give the right answer when given very
3932 small float arguments.
3933 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3935 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3936 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3937 ** LCM should return a non-negative integer.
3938 ** PARSE-INTEGER returned the index of a terminator instead of the
3939 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3940 ** PARSE-INTEGER returned an incorrect index being applied to a
3942 ** LCM with two arguments of 0 returns 0 rather than signalling
3944 ** unsigned addition of a 32-bit constant with the high bit set no
3945 longer causes an internal compiler error on the x86.
3946 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3947 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3948 with negative last argument.
3949 ** byte specifiers with zero size and position no longer cause
3950 an error during type derivation.
3951 ** bignum multiplication on the Alpha platform now returns the
3953 * porting: The system now builds on SuSE AMD64, although it still
3954 generates a 32-bit binary.
3955 * .fasl file incompatibility: The fasl file version number has
3956 been incremented (because of the changes to internal compiler
3957 data structures referred to above).
3959 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3960 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3961 more accurately, on the Darwin kernel running on PowerPC hardware.
3962 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3963 * Compiler code deletion notes now signal a condition of type
3964 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3965 an associated MUFFLE-WARNING restart.
3966 * The compiler now performs limited argument count validation of
3967 constant format strings in FORMAT, and where appropriate in ERROR,
3968 CERROR and WARN. (thanks to Gerd Moellmann)
3969 * New ASDF-INSTALL contrib can be used for automatic download and
3970 installation of third-party Lisp code from CCLAN or other sites
3972 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3973 which forces another thread to execute a function supplied by the
3975 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3976 now accept and act upon their :ELEMENT-TYPE keyword argument.
3977 (reported by Martin Atzmueller, Edi Weitz)
3978 * bug fix: FILE-POSITION now accepts position designators up to
3979 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3980 is the greater. (thanks to Patrik Nordebo)
3981 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3982 Kalle Olavi Niemitalo)
3983 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3984 printable. (reported by Eric Marsden)
3985 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3986 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3987 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3988 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3989 (thanks to Stig Sandoe)
3990 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3991 UNREAD-CHAR now correctly includes the unread character in the
3992 target sequence. (thanks to Gerd Moellmann)
3993 * bug fix in threaded builds: the system can now be suspended and
3994 resumed by shell job control with minimal disruption.
3995 * bug fixes in times and timezones >2038AD
3996 * better handling of "where is GNU make?" problem in build scripts
3997 (thanks to Nikodemus Siivola)
3998 * new optimization: inside a named function any reference to a
3999 function with the same name is considered to be a self-reference;
4000 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4001 optimization quality.
4002 * new optimization on x86: logical functions and + now have
4003 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4004 used when the result is truncated to 32 bits.
4005 * VALUES declaration is partially enabled.
4006 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4007 * fixed some bugs revealed by Paul Dietz' test suite:
4008 ** The system now obeys the constraint imposed by
4009 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4010 types form a lattice under type intersection.
4011 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4012 ** ASSOC now ignores NIL elements in an alist.
4013 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4014 and (1+ MOST-POSITIVE-FIXNUM) answers.
4015 ** The addition of a method with invalid qualifiers to a generic
4016 function does not cause an error to be signalled immediately;
4017 a warning is signalled, and the error is generated only on
4018 calling the generic function.
4019 * changed .fasl file version number, in part to add type codes for
4020 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4021 obscure ANSI requirements
4023 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4024 * fixed bug 148: failure to inline-expand a local function left
4025 garbage, confusing the compiler.
4026 * fixed bugs 3cd: structure slot readers perform type check if the
4027 slot can have an invalid value (i.e. it is either not initialized
4028 or can be written with a less specific slot writer).
4029 * bug fix: the compiler now traps array references to elements off
4030 the end of an array; previously, the bounds checking in some
4031 circumstances could go off-by-one.
4032 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4034 * type declarations for array element types now obey the description
4035 on the CLHS page "Declaration TYPE", as per discussions on
4036 sbcl-help around 2003-05-08. This means that a declaration
4037 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4038 declaration, all references to BAR will be asserted or assumed
4039 (with THE, so dependent on compiler policy) to involve objects of
4040 type FOO. Note that no such declaration is implied in
4041 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4042 * declared types of functions from the "Conditions"
4043 chapter. (reported by Paul Dietz)
4044 * bug fix: CERROR accepts a function as its first argument.
4045 * bug fix: NTH an NTHCDR accept a bignum as index
4046 arguments. (reported by Adam Warner)
4047 * optimization: character compare routines now optimize comparing
4048 against a constant character. (reported by Gilbert Baumann)
4049 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4050 argument now works properly on the MIPS platform.
4051 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4052 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4053 declared to have a functional type, does not cause an error
4055 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4056 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4057 * fixed bug: if last continuation of a deleted block has a
4058 destination, this destination should be deleted too. (reported by
4060 * fixed a bug in the bootstrap process: the host compiler's values
4061 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4062 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4063 test case from Patrik Nordebo)
4064 * improved the ability of the disassembler on the PPC platform to
4065 provide helpful disassembly notes.
4066 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4067 the class in more cases than previously.
4068 * bug fix: FILE-POSITION now understands :START and :END for
4069 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4070 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4071 8) data. (thanks to David Lichteblau)
4072 * bug fix: it is possible to add a method to a generic function
4073 without lambda list.
4074 * bug fix: reader failed to signal END-OF-FILE inside an
4075 object representation. (reported by Nikodemus Siivola)
4076 * fixed some bugs revealed by Paul Dietz' test suite:
4077 ** LAST and [N]BUTLAST should accept a bignum.
4078 ** condition slot accessors are methods.
4079 ** (VECTOR NIL) is a subtype of STRING.
4081 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4082 * minor incompatible change: some nonsensical specialized lambda
4083 lists (used in DEFMETHOD) which were previously ignored now signal
4085 * minor incompatible change: the system is now aware of the types of
4086 variables in the COMMON-LISP package, and will signal errors for
4087 most violations of these type constraints (where previously they
4088 were silently accepted).
4089 * minor incompatible change: COMPILE-FILE now uses the freedom
4090 afforded (ANSI 3.2.2.3) to use derived function types for
4091 functions defined in the same file. This also permits the system
4092 to warn on static type mismatches and function
4093 redefinition. (Currently it does not work with high DEBUG level.)
4094 * minor incompatible change: VALUES declaration is disabled.
4095 * When issuing notes, the compiler now signals a condition of type
4096 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4097 restart for use in user handlers. It is expected that the
4098 COMPILER-NOTE condition will eventually become a condition
4099 supertype to a hierarchy of note types, which will then be
4100 handleable in a similar fashion. However, at the moment, no such
4101 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4102 but it's an implementation detail, not a classification for the
4104 * Changes in type checking closed the following bugs:
4105 ** type checking of unused values (192b, 194d, 203);
4106 ** template selection based on unsafe type assertions (192c, 236);
4107 ** type checking in branches (194bc).
4108 * A short form of VALUES type specifier has ANSI meaning (it has
4109 increased the number of situations when SBCL cannot perform type
4111 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4112 keywords or constants is permissible.
4113 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4114 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4115 classes. (thanks to Antonio Martinez)
4116 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4117 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4118 argument to a pretty-print stream. Instead, it leaves any such
4119 operations to DESCRIBE-OBJECT methods.
4120 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4122 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4123 lambda lists. (thanks to David Lichteblau)
4124 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4125 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4126 (thanks to Gerd Moellmann)
4127 * fixed bug 246: increased compilation speed of long
4128 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4130 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4132 * DEFCONSTANT now throws a condition of type
4133 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4134 constant to a non-EQL value; CONTINUE and ABORT restarts
4135 respectively change and preserve the value.
4136 * fixed bug 63: The code walker, part of the implementation of CLOS,
4137 is now better at handling symbol macros.
4138 * bug fix: There is no longer an internal implementation type named
4139 CL:LENGTH. (reported by Raymond Toy)
4140 * bug fix: In macro-like defining macros/special operators the
4141 implicit block does not enclose the lambda list.
4142 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4143 enclosed in parentheses) are not suitable as type specifiers, and
4144 their use properly signals an error now.
4145 * bug fix: An argument count mismatch for a type specifier in code
4146 being compiled no longer causes an unhandled error at compile
4147 time, but signals a compile-time warning.
4148 * fixed simple vector readable printing
4149 * bug fix: DESCRIBE takes more care over whether the class
4150 precedence list slot of a class is bound before accessing it.
4151 (reported by Markus Krummenacker)
4152 * bug fix: FORMATTER can successfully compile pretty-printer format
4153 strings which use variants of the ~* directive inside.
4154 * bug fix: SEARCH now applies its TEST predicate to the elements of
4155 the arguments in the correct order. (thanks to Wolfhard Buss)
4156 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4157 in type inference. (thanks to Robert E. Brown)
4158 * bug fix: Reading in symbols with an explicit package name of ""
4159 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4160 * fixed some bugs revealed by Paul Dietz' test suite:
4161 ** NIL is now allowed as a structure slot name.
4162 ** Arbitrary numbers, not just REALs, are allowed in certain
4163 circumstances in LOOP for-as-arithmetic clauses.
4164 ** Multiple class redefinitions before slot access no longer
4165 causes a type error.
4166 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4167 association between the name and a class.
4168 ** Generic functions with non-standard method-combination and over
4169 five methods all of which return constants no longer return NIL
4170 after the first few invocations. (thanks to Gerd Moellmann)
4171 ** CALL-NEXT-METHOD with no arguments now passes the original
4172 values of the arguments, even in the presence of assignment.
4173 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4175 ** DISASSEMBLE works with closures and funcallable instances.
4176 ** ADD-METHOD now returns the generic function, not the new method.
4177 ** FIND-METHOD signals an error if the lengths of the specializers
4178 is incompatible with the generic function, even if the ERRORP
4180 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4181 which its argument is a member.
4182 ** DEFCLASS only redefines the class named by its class-name
4183 argument if that name is the proper name of the class;
4184 otherwise, it creates a new class.
4185 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4186 of the UNBOUND-SLOT condition to the name of the slot.
4187 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4188 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4189 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4190 SLOT-MAKUNBOUND in the specified fashion.
4192 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4193 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4194 cross-compilation host. As a consequence, we can now bootstrap our
4195 way up to SBCL starting with a bare gcc toolchain and human-readable
4196 source code (first the source to CLISP, then the source to SBCL).
4197 * A contributed module containing a partial implementation of the
4198 simple-streams interface has been included. (thanks to Rudi
4200 * A contributed module implementing the RFC1321 Message Digest
4201 Algorithm, known as MD5, has been included.
4202 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4203 no longer has any effect, as the code controlled by this feature
4204 has been deleted. (As far as we know, no-one has ever built using
4205 this feature, and its semantics were confused in any case).
4206 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4207 work on conditions (as required by the ANSI specification),
4208 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4209 expected behaviour on conditions. Users should note, however,
4210 that such behaviour is not required by the ANSI specification,
4211 and so use of this behaviour may render their code unportable.
4212 * fixed some bugs revealed by Paul Dietz' test suite:
4213 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4215 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4216 ** SXHASH on condition objects no longer returns NIL.
4217 ** :ALLOCATION :CLASS slots are better treated; their values are
4218 updated on class redefinition, and initforms inherited from
4219 superclasses are applied.
4220 ** REMOVE-METHOD returns its generic function argument even when
4221 no method was removed.
4222 ** SHARED-INITIALIZE now initializes the values of the requested
4223 slots, including those with :ALLOCATION :CLASS.
4224 ** ALLOCATE-INSTANCE now works on structure classes defined via
4225 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4227 ** SLOT-EXISTS-P now works on conditions, as well as structures
4229 ** MAKE-LOAD-FORM now has the required methods on
4230 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4231 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4232 keyword, and now implements the SLOT-NAMES argument.
4233 ** methods with &OPTIONAL arguments no longer allow too many
4234 arguments to be passed in the call without error.
4235 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4236 option is consistent with the required arguments of the generic
4237 function lambda list.
4238 * bug fix: REQUIRE accepts a string designator. (Thanks to
4240 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4241 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4242 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4243 * bug fix: The compiler now checks for duplicated variables in macro
4245 * bug fix: SETQ on globals returns the correct value.
4246 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4247 not a COMPILER-ERROR (followed by some other strange error on
4248 choosing the CONTINUE restart).
4249 * bug fix: make.sh and friends are now more consistent in the way that
4250 they look for GNU "make".
4252 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4253 * experimental native threads support (on x86 Linux >=2.4 only).
4254 This is not compiled in by default: you need to add :SB-THREAD to
4255 the target features. See the "Beyond ANSI" chapter of the manual
4257 * fix for longstanding nonANSIism: The old distinction between
4258 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4259 The return value from CL:FIND-CLASS is now a CLOS class, and
4260 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4261 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4262 * An interface to the MetaObject Protocol, as described in Kiczales,
4263 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4264 MIT Press, 1991, is available from the SB-MOP package.
4265 * incompatible change: the SB-PCL package should now be considered
4266 a private implementation detail, and no longer a semi-private MOP
4268 * minor incompatible change: due to rearrangement for threads, the
4269 control stack and binding stack are now allocated at arbitrary
4270 addresses instead of being hardcoded per-port. Users affected by
4271 this probably have to be doing advanced things with shared
4272 libraries, and will know who they are.
4273 * minor incompatible change: Previously, all --eval forms used were
4274 processed with READ before any of them were processed with EVAL.
4275 Now each --eval form is processed with both READ and EVAL before
4276 the next --eval form is processed. (Thus package operations like
4277 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4278 work as the user might reasonably expect.)
4279 * minor incompatible change: *STANDARD-INPUT* is now only an
4280 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4282 * minor incompatible change: Y-OR-N-P is now character-oriented,
4283 not line oriented. Also, YES-OR-NO-P now works without errors.
4284 (thanks to Antonio Martinez)
4285 * sb-aclrepl module improvements: an integrated inspector, added
4286 repl features, and a bug fix to :trace command.
4287 * Known functions, which cannot be open coded by the backend, are
4288 considered to be able to check types of their arguments. (fixing
4289 a bug report by Nathan J. Froyd)
4290 * fixed a bug in computing method discriminating functions: It is
4291 now possible to define methods specialized on classes which have
4292 forward-referenced superclasses. (thanks to Gerd Moellmann)
4293 * fixed evaluation order in optional entries (reported by Gilbert
4295 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4296 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4297 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4298 required-by-AMOP NAME argument, as well as CLASS and
4299 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4300 * fixed bug 20: DEFMETHOD can define methods using names that are
4301 not the proper names of classes to designate class specializers.
4302 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4303 Unix file descriptors, instead of blowing up. (thanks to Antonio
4305 * Garbage collection refactoring: user-visible change is that a
4306 call to the GC function during WITHOUT-GCING will not do garbage
4307 collection until the end of the WITHOUT-GCING. If you were doing
4308 this you were probably losing anyway.
4309 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4310 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4311 TYPEP the latter but not the former.
4312 * The compiler issues a full WARNING for calls to undefined functions
4313 with names from the CL package.
4314 * MAP-INTO for a vector destination is open coded. (reported by
4315 Brian Downing on c.l.l)
4316 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4317 documentation string.
4318 * fixed some bugs revealed by Paul Dietz' test suite:
4319 ** COPY-ALIST now signals an error if its argument is a dotted
4321 ** Condition slots are now accessed more correctly in the presence
4322 of multiple initargs for a given slot.
4323 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4324 exclude restarts of the same name associated with a different
4326 ** DEFCLASS of forward-referenced classes with another
4327 forward-referenced class in the superclasses list no longer
4329 ** Condition slots are now initialized once each, not multiple
4330 times. (thanks to Gerd Moellmann)
4331 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4333 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4334 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4335 arguments contain duplicated elements.
4336 ** RESTART-CASE understands local macros.
4337 ** RESTART-CASE associates exactly its own restarts with a condition.
4338 ** ENDP in safe mode checks its argument to be of type LIST.
4339 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4340 in question is unbound.
4341 ** Optimized MAKE-INSTANCE functions no longer cause internal
4342 assertion failures in the presence of duplicate initargs.
4343 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4344 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4345 propagated even in the ctor optimized implementation of
4347 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4349 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4350 * a better implementation of SXHASH on (simple) bit vectors,
4351 measured both in execution speed and in distribution of results
4352 over the positive fixnums, has been installed. Likewise, a better
4353 implementation of EQUAL for simple bit vectors is now available.
4354 * fixed CEILING optimization for a divisor of form 2^k.
4355 * fixed bug 240 (emitting extra style warnings "using the lexical
4356 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4357 by Antonio Martinez)
4358 * fixed SXHASH, giving different results for NIL depending on type
4359 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4360 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4361 variable. (found by Rolf Wester)
4362 * SBCL does not ignore type declarations for special
4363 variables. (reported by rif on c.l.l 2003-03-05)
4364 * some bug fixes in contrib/sb-aclrepl/
4365 * fixed some bugs revealed by Paul Dietz' test suite:
4366 ** a bug in the CONS type specifier, whereby the CAR and CDR
4367 types got intertwined, has been fixed;
4368 ** the type system is now able to reason about the interaction
4369 between INTEGER and RATIO types more completely;
4370 ** APPEND, [N]REVERSE and NRECONC check that those their
4371 arguments, which must be proper lists, are really so;
4372 ** An array specialized to be unable to hold elements has been
4373 implemented, as required -- yes, really -- by ANSI;
4374 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4375 on malformed property lists;
4377 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4378 * incompatible packaging change: in line with Unix convention,
4379 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4380 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4381 * REQUIRE and PROVIDE are now optionally capable of doing something
4382 useful. See the documentation string for REQUIRE.
4383 * infrastructure for a managed SBCL contrib system: contributed
4384 modules in this release include:
4385 ** the ASDF system definition facility;
4386 ** an interface to the BSD Sockets API;
4387 ** an ACL-like convenience interface to the repl;
4388 (thanks to Kevin Rosenberg)
4389 ** an implementation of ROTATE-BYTE, with efficient implementation
4391 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4392 gives a closer approximation to the right answer than previously.
4393 (thanks to Raymond Toy)
4394 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4395 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4396 optional environment arguments, as required by ANSI.
4397 * fixed bugs in other functions taking environment objects, allowing
4398 calls with an explicit NIL environment argument to be compiled
4400 * fixed bug 228: primary return values from
4401 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4402 COMPILE or FUNCTION.
4403 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4404 :TYPE will no longer signal errors on innocuous objects.
4405 * fixed bug 231b: SETQ is better at respecting type declarations in
4406 the lexical environment.
4407 * fixed a bug in DEFCLASS: classes named by symbols with no or
4408 unprintable packages can now be defined.
4409 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4410 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4411 * fixed compiler failure related to checking types of functions.
4412 (reported by Robert E. Brown)
4413 * the compiler is now much more consistent in its error-checking
4414 treatment of bounding index arguments to sequence functions: in
4415 (SAFETY 3) code, errors will be signalled in almost all cases if
4416 invalid sequence bounding indices are passed to functions defined
4417 by ANSI to operate on sequences.
4418 * fixed a bug in the build procedure: documentation of SBCL-specific
4419 packages is now preserved and available in the final Lisp image.
4420 * lifted FDEFINITION lookup out of loops in the implementation of
4421 many list operations. (thanks to Robert E. Brown)
4422 * fixed a bug in the reader: the #n# reader macro now works for
4423 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4424 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4425 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4426 E. Brown and Tony Martinez respectively)
4427 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4428 SLOT-BOUNDP: in particular, it is now able to optimize them much
4429 better, and is now not vulnerable to having packages renamed.
4430 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4431 always called when a slot is not present in an instance. (thanks
4433 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4434 longer signal an error on unreading a character following EOF on
4435 the previous constituent stream. (thanks to Tony Martinez)
4436 * fixed some bugs revealed by Paul Dietz' test suite:
4437 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4438 not just nonnegative fixnums;
4439 ** the logical bit-array operators such as BIT-AND now accept an
4440 explicit NIL for their "opt-arg" argument (to indicate a
4441 freshly-consed result bit-array);
4442 ** ELT now signals an error on an invalid sequence index in safe
4444 ** the type system is now cleverer about negations of numeric
4445 types, and consequently understands the BIGNUM and RATIO types
4447 ** the type system is now cleverer about the interaction between
4448 INTEGER and RATIO types: while bugs still remain, many more
4449 cases are accurately computed;
4450 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4451 if it is in the last clause;
4452 ** CONSTANTLY now correctly returns a side-effect-free function in
4454 ** DECLARE is no longer treated as a special-operator; in
4455 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4456 * incremented fasl file version number due to the change in the
4457 DEFSTRUCT-SLOT-DESCRIPTION structure.
4459 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4460 * minor incompatible change: code processed by the "interpreter" or
4461 EVAL now has a compilation optimization policy of (DEBUG 2)
4462 (changed from (DEBUG 1)) to improve debuggability of interactive
4463 development, and to allow the use of the debug RETURN command in
4465 * an experimental implementation of the RETURN command for the
4466 debugger has been included. (thanks to Frederik Kuivinen)
4467 * fixed bug 62: constraints were not propagated into a loop.
4468 * fixed bug in embedded calls of SORT (reported and investigated by
4470 * fixed some bugs revealed by Paul Dietz' test suite:
4471 ** printing and reading of arrays with some dimensions having
4472 length 0 (thanks to Gerd Moellmann);
4473 ** BOA constructor with &AUX argument without a default value does
4474 not cause a type error;
4475 ** CONSTANTP now returns true for all self-evaluating objects.
4477 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4478 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4479 accessors that are related by inheritance, as specified in the
4480 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4481 Valtteri Vuorikoski)
4482 * The compiler is now able to inline functions that were defined in
4483 a complex lexical environment (e.g. inside a MACROLET).
4484 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4486 * Support for the upcoming FreeBSD-5.0 release has been included.
4487 (thanks to Dag-Erling Smorgrav)
4488 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4489 effect when it is not in a toplevel context.
4490 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4491 stand a better chance of being correct. (thanks to Gerd
4493 * fixed bug in COERCE, which now signals an error on coercing a
4494 rational to a bounded real type which excludes the expected
4496 * The compiler is now able to derive types more accurately from the
4497 COERCE and COMPILE functions.
4498 * fixed bug 223: functional binding is considered to be constant
4499 only for symbols in the CL package.
4500 * fixed bug 231: SETQ did not check the type of a variable being set
4501 (reported by Robert E. Brown)
4502 * A new optimization for MAKE-INSTANCE has been included, fixing
4503 various bugs (including relating to :ALLOCATION :CLASS slots and
4504 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4506 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4507 ** As required by ANSI, LOOP now disallows anonymous collection
4508 clauses such as COLLECT I in conjunction with aggregate boolean
4509 clauses such as THEREIS (= I 1);
4510 ** LOOP now signals an error when any variable is reused in the
4511 same loop (including the potentially useful construct analogous
4512 to WITH A = 1 WITH A = (1+ A);
4513 ** IT is only a special loop symbol within the first clause of a
4514 conditional loop clause;
4515 ** LOOP with a typed iteration variable over a hashtable now
4516 signals a type error iff it should.
4517 * fixed some other bugs revealed by Paul Dietz' test suite:
4518 ** FILE-STREAM now names the class previously known as FD-STREAM;
4519 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4520 argument) no longer signals an error;
4521 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4522 of the slot symbol, rather than using the current package
4523 ((:CONC-NAME "") continues to intern the slot's name in the
4525 * incremented fasl file version number, because of the incompatible
4526 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4527 of the new implementation of DEFINE-COMPILER-MACRO.
4529 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4530 * Support for building SBCL for MIPS platforms running in
4531 little-endian mode has now been checked in, and basic
4532 functionality on said platforms verified.
4533 * minor incompatible change: PCL now records the pathname of a file
4534 in which methods and the like are defined, rather than its
4536 * minor incompatible change: TRUENAME now considers the truename of
4537 a file naming a directory to be the pathname with :DIRECTORY
4538 component indicating that directory.
4539 * minor incompatible change: a NAMED clause in the extended form of
4540 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4541 reason for the previous behaviour is unclear.
4542 * more systematization and improvement of CLOS and MOP conformance
4543 in PCL (thanks to Gerd Moellman and Pierre Mai):
4544 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4546 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4547 primary methods with no specializers;
4548 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4550 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4551 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4552 FORWARD-REFERENCED-CLASSes; error reporting on
4553 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4555 ** SXHASH on CLOS instances now uses a slot internal to the
4556 instance to return different numbers on distinct instances,
4557 while preserving the same return value through invocations of
4559 ** DEFMETHOD signals errors when methods with longer incongruent
4560 lambda lists are added to generic functions;
4561 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4562 CLASS, as specified in AMOP;
4563 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4564 on the order returned by the primary method for classes of
4565 class STANDARD-CLASS;
4566 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4567 * fixed some bugs shown by Paul Dietz' test suite:
4568 ** DOLIST puts its body in TAGBODY;
4569 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4571 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4572 value producing form;
4573 ** if more variables are given to PROGV than values, extra
4574 variables are bound and made to have no value;
4575 ** NSUBSTITUTE on list arguments gets the right answer with
4577 ** ELT signals an error of type TYPE-ERROR when the index argument
4578 is not a valid sequence index;
4579 ** LOOP signals (at macroexpansion time) an error of type
4580 PROGRAM-ERROR when duplicate variable names are found;
4581 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4582 ** FUNCALL of special-operators now cause an error of type
4584 ** PSETQ now works as required in the presence of side-effecting
4585 symbol-macro places;
4586 ** NCONC accepts any object as its last argument;
4587 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4589 ** loop-for-as-package does not require a package to be explicitely
4591 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4593 * fixed bug 166: compiler preserves "there is a way to go"
4594 invariant when deleting code.
4595 * fixed bug 172: macro lambda lists with required arguments after
4596 &REST arguments now cause an error to be signalled. (thanks to
4598 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4599 bug. (thanks to Matthew Danish)
4600 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4602 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4603 arguments are lexically rebound. (thanks to Gerd Moellmann and
4605 * fixed bug 194: error messages are now more informative when there
4606 is no primary method applicable in a call to a generic
4607 function. (thanks to Gerd Moellmann)
4608 * fixed bug in command line argument checking (thanks to Julian
4610 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4611 (thanks to Matthew Danish)
4612 * incremented fasl file version number, because of the
4613 SXHASH-related changes in the layout of CLOS data structures
4615 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4616 * minor incompatible change: The runtime (the Unix executable named
4617 "sbcl") is now much pickier about the .core files it will load.
4618 Essentially it now requires .core files to descend from the same
4619 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4620 as the runtime does. (The intent is to prevent the crashes which
4621 can occur, and which can even be reported as mysterious failures,
4622 when people patch the sources or change the build parameters
4623 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4624 sbcl and .core files.)
4625 * fixed bug: VALUES-LIST is no longer optimized away.
4626 * fixed bug 142: The FFI conversion of C string values to Lisp
4627 string values no longer conses excessively. (thanks to Nathan
4628 Froyd porting Raymond Toy's fix to CMU CL)
4629 * began to systematize and improve MOP conformance in PCL (thanks to
4630 Nathan Froyd, Gerd Moellman and Pierre Mai):
4631 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4633 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4634 ** FINALIZE-INHERITANCE is now called on class finalization;
4635 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4636 argument precedence order.
4637 * fixed bug 202: The compiler no longer fails on functions whose
4638 derived types contradict their declared type.
4639 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4640 so it can be non-toplevel.
4641 * The fasl file version number has changed (because of the new
4642 implementation of DEFMACRO).
4643 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4644 safe code, that any length requirement by their type-specifier
4645 argument is valid. The exceptions to this are described in bug
4647 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4648 functions now check the types of their inputs as required by ANSI.
4649 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4650 introduced symbol is DECLAREd to be SPECIAL.
4651 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4652 * fixed bug: :COUNT argument to sequence functions may be negative
4653 * fixed bug: body of DO-SYMBOLS may contain declarations
4654 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4655 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4656 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4657 symbol macro only once
4658 * fixed printing of call frame when argument list is unavailable
4659 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4660 * compiler no longer signals WARNING on unknown keyword
4663 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4664 * A beta-quality port to the mips architecture running Linux,
4665 based on the old CMUCL backend, has been made. It has been tested
4666 on a big-endian kernel, and works sufficiently well to be able to
4667 rebuild itself; it has not been tested in little-endian mode.
4668 * fixed an inconsistency between gencgc.c and purify.c which made
4669 dumping/loading .core files unreliable
4670 * fixed bug 120a: The compiler now deals correctly with IFs where
4671 the consequent is the same as the alternative, instead of
4672 misderiving the return type. (thanks to Alexey Dejneka)
4673 * fixed bug 113: Logical pathnames are now dumpable (the logical
4674 host is resolved at load-time, throwing an error if it is not
4676 * fixed bug 174: FORMAT's error message is slightly clearer when a
4677 non-printing character is used in a format directive.
4678 * fixed several bugs in compiler checking of type declarations, i.e.
4679 violations of the Python "declarations are assertions" principle
4680 (thanks to Alexey Dejneka)
4681 * fixed several bugs in PCL's error checking (thanks to Gerd
4683 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4685 * fixed bug in compilation of functions as first class values
4686 (thanks to Antonio Martinez-Shotton)
4687 * The compiler's handling TYPE-ERRORs which it can prove will
4688 inevitably happen at runtime has been cleaned up and corrected
4689 in several ways. (thanks to Alexey Dejneka)
4690 * improved argument type checking for various basic arithmetic
4691 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4692 lavished on them in the past that they can be compiled in many
4693 ways in different special cases
4694 * fixed bug 181: compiler checks validity of user supplied type
4696 * cleaned up code flushing in optimization: Function calls which
4697 should signal errors for safety purposes (e.g. which ANSI says
4698 should signal errors when their arguments are of incorrect type)
4699 are no longer optimized away.
4700 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4701 * incremented fasl file version number, because changes in the
4702 implementation of sequence functions like COERCE caused
4703 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4704 in old inline expansions) to become undefined. (Actually these
4705 changes were later undone, so we might very well be binary
4706 compatible with 0.7.7 after all, but leaving the version number
4707 incremented seemed like the simplest and most conservative
4710 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4711 * An alpha-quality port to the parisc architecture running Linux,
4712 based on the old CMUCL backend, has been made. This, even more so
4713 than the other backends, should be considered still a work in
4714 progress; known problems include that the Linux kernel in 64-bit
4715 mode does not propagate the correct sigcontext structure to
4716 userspace, and consequently SBCL on a parisc64 kernel will not
4718 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4719 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4720 suppressed.) Also now that the compiler is looking at declarations
4721 in the environment, it checks optimization declarations as well,
4722 and suppresses inlining when (> DEBUG SPEED).
4723 * More fixes have been made to treatment of floating point exception
4724 treatment and other Unix signals. In particular, floating point
4725 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4726 * The detection and handling of control stack exhaustion (infinite
4727 or very deeply nested recursion) has changed. Stack exhaustion
4728 detection is now done by write-protecting pages at the OS level
4729 and applies at all optimization settings; when found, a
4730 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4731 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4732 be caught using IGNORE-ERRORS.
4733 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4734 correctly when transforming recursive LABELS functions to LETs.
4735 (thanks to Alexey Dejneka)
4736 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4737 that are names of constants or global variables.
4738 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4739 alien routines with docstrings.
4740 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4741 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4743 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4744 (thanks to Eric Marsden)
4745 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4746 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4747 * Bug fix: The SPARC backend can now compile functions involving
4748 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4749 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4750 to a functions expecting a PATHNAME-DESIGNATOR.
4751 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4752 lambda lists. (thanks to Alexey Dejneka)
4753 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4754 functions so that EXPORTing the name of the class doesn't cause
4755 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4756 to Antonio Martinez for reporting this)
4757 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4758 constant-folded without failing an assertion. (thanks to Einar
4759 Floystad Dorum for reporting this)
4760 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4761 types are now dealt with more correctly by the compiler.
4762 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4763 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4764 behaviour analogous to RENAME-FILE. This puts its behaviour more
4765 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4767 * The fasl file version number has changed again. (because of the
4768 bug fix involving the names of PCL MAKE-INSTANCE functions)
4770 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4771 * bug fix: Floating point exceptions are treated much more
4772 consistently on the x86/Linux and PPC/Linux platforms.
4773 * Array initialization with :INITIAL-ELEMENT is now much faster for
4774 cases when the compiler cannot open code the array creation, but
4775 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4776 array accesses have also seen a speed increase.
4777 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4778 specified. (This was at the root of some bad interactions between
4779 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4781 * bug fix: Internal error arguments for undefined functions are now
4782 computed correctly on the PPC/Linux platform.
4783 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4784 Raymond Toy's patch for CMU CL)
4785 * Support for the Solaris 9 operating environment has been included
4786 (thanks to Daniel Merritt)
4787 * A very ugly but hopefully complete draft of the missing FFI chapter
4788 of the manual has been created by reformatting the corresponding
4789 CMU CL manual chapter into (currently very ugly and incoherent)
4790 DocBook and bringing it up to date for SBCL behavior. Thus, the
4791 manual is now essentially complete, at least by my extreme
4792 once-and-only-once standards, whereby it's acceptable to refer to
4793 the doc strings of SB-EXT functions as the primary documentation.
4794 * The fasl file version number has changed again, due to cleanup of
4795 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4796 is no longer a static symbol.)
4798 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4799 * SBCL now builds with OpenMCL (version 0.12) as the
4800 cross-compilation host; also, more progress has been made toward
4801 bootstrapping under CLISP.
4802 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4804 * bug 158 fixed: The compiler can now deal with integer loop
4805 increments different from 1; fixing this turned out also to fix
4807 * bug 169 fixed: no more bogus warnings about using lexical bindings
4808 despite the presence of perfectly good SPECIAL declarations (thanks
4809 to David Lichteblau)
4810 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4811 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4812 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4814 * bug 180 fixed: Method combination specifications no longer ignore
4815 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4816 * bug fix: Structure type predicate functions now check their argument
4817 count as they should.
4818 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4819 correctly. (thanks to Pierre Mai)
4820 * minor incompatible change: The --noprogrammer option is deprecated
4821 in favor of the new --disable-debugger option, which is very similar.
4822 (The major difference is that it takes effect at a slightly different
4823 time at startup, causing handling of errors in --sysinit and
4824 --userinit files will be affected differently.) The
4825 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4826 been added to allow this functionality to be controlled from ordinary
4827 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4828 maintainers, who might want to run non-interactive scripts to
4829 build SBCL cores which will later be used interactively.)
4830 * minor incompatible change: The LOAD function no longer, when given
4831 a wild pathname to load, loads all files matching that pathname.
4832 Instead, an error of type FILE-ERROR is signalled.
4834 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4835 * bug 147 fixed: The compiler preserves its block link/count
4836 invariants more correctly now so that it doesn't crash. (thanks
4838 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4840 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4841 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4842 no-value-for-this-character as NIL (as specified by ANSI).
4843 * HOST-NAMESTRING on physical pathnames now returns a string that is
4844 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4845 (thanks to Christophe Rhodes)
4846 * The Alpha port handles icache flushing more correctly. (thanks to
4848 * More progress has been made toward bootstrapping under CLISP. (thanks
4849 to Christophe Rhodes)
4850 * The fasl file format has changed again, because dynamic loading
4851 on OpenBSD (which has non-ELF object files) motivated some cleanups
4852 in the way that foreign symbols are transformed and passed around.
4853 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4854 is no longer treated as whitespace by the reader, but instead as
4855 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4856 |A
\7fB|, instead of A as it used to.
4858 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4859 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4860 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4861 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4862 this as of 0.7.1.45, but was left out of the previous news section
4863 (thanks to Dan Barlow)
4864 * SBCL now runs on the Solaris operating system on SPARC architectures
4865 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4866 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4867 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4868 * SPARC backend cleanups, allowing builds of cores optimized for V8
4869 and V9 SPARCS, and also emission of code targeted to a particular
4870 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4872 * SBCL is closer to bootstrapping under CLISP, thanks to various
4873 fixes by Christophe Rhodes.
4874 * The fasl file format has changed again, to allow the compiler's
4875 INFO database to support symbol macros.
4876 * The user manual (in doc/) is formatted into HTML more nicely.
4877 (thanks to coreythomas)
4878 * The system is smarter about SUBTYPEP relationships, especially
4879 those involving NOT types (including types such as ATOM which are
4880 represented internally using NOT types). Thus SUBTYPEP is less
4881 likely to return (VALUES NIL NIL) in general, and in particular
4882 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4884 * The fasl file format has changed again, because the internal
4885 representation of types now includes a new slot to support the new
4886 SUBTYPEP-of-NOT-types logic.
4887 * (not a change in the main branch of SBCL, but a related prototype
4888 which can hopefully be merged into the main branch of SBCL in the
4889 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4890 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4891 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4892 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4893 dispatch macro character combinations. (thanks to Alexey Dejneka)
4894 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4895 that superficially look like logical namestrings correctly.
4896 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4898 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4899 default supplied-p) for &optional and &key arguments. (thanks to
4902 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4903 * incompatible change: The compiler is now less aggressive about
4904 tail call optimization, doing it only when (> SPACE DEBUG) or
4905 (> SPEED DEBUG). (This is an incompatible change because there are
4906 programs which relied on the old CMU-CL-style behavior to optimize
4907 away their unbounded recursion which will now die of stack overflow.)
4908 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4909 for non-GENCGC systems has been increased to 20M (since that
4910 seems much closer to the likely performance optimum for modern
4911 systems than the old 4M value was)
4912 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4913 and *DEBUG-PRINT-LEVEL*
4914 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4915 of CMU CL's support for SPARC, and various endianness and other
4916 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4917 * new syntactic sugar for the Unix command line: --load foo.bar is now
4918 an alternate notation for --eval '(load "foo.bar")'.
4920 ** The system now detects stack overflow and handles it gracefully,
4921 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4922 optimization settings. (This is a good thing in general, and
4923 its introduction in this version should be particularly timely
4924 for anyone whose code fails because of suppression of tail
4926 ** The system now hunts for the C variable "environ" in a more
4927 devious way, to avoid segfaults when the C library version differs
4928 between compile time and run time. (thanks to Christophe Rhodes)
4929 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4930 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4931 ** The compiler no longer issues bogus style warnings for undefined
4932 classes in the same source file as the DEFCLASSes which defined
4933 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4935 ** fixes in CONDITION class precedence list for undefined function
4936 errors (thanks to Alexei Dejneka)
4937 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4938 correctly. (thanks to Dan Barlow)
4939 ** portability fixes aiming at bootstrapping under CLISP (thanks
4940 to Dave McDonald and Christophe Rhodes)
4941 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4942 ** fixes in type translation and and type inference (thanks to
4944 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4945 ** various fixes in the new ports (thanks to Dan Barlow)
4946 * several changes related to debugging:
4947 ** suppression of tail recursion, as noted above
4948 ** stack overflow detection, as noted above
4949 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4950 is now the default. (For some time encapsulation has been more
4951 reliable than the breakpoint-based :ENCAPSULATE NIL
4952 implementation, at least on X86 systems; and I just noticed that
4953 encapsulation also seems closer to the spirit of the ANSI
4956 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4958 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4959 up properly again. (There was a packaging bug in 0.7.0 which
4960 left their definitions in SB-SYS::LOAD-FOREIGN and
4961 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4962 vital for most things which interface to C-level interfaces,
4963 like extensions working with sockets or databases or
4964 Perl-compatible regexes or whatever, and the need to fix
4965 this bug is the main reason that 0.7.1 was released so
4967 ** DEFGENERIC is now choosier about the methods it redefines, so that
4968 reLOADing a previously-LOADed file containing DEFGENERICs does
4969 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4970 cycle now works as it should. (thanks to Alexey Dejneka)
4971 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4972 fixed by Christophe Rhodes. (He actually submitted this patch
4973 months ago, and I delayed until after 0.7.0.)
4974 ** Bug 111 (internal compiler confusion about runtime checks on
4975 FUNCTION types) was fixed by Alexey Dejneka.
4976 * Some internal cleanups (getting rid of variables which aren't
4977 needed now that the byte interpreter is gone) caused the fasl
4978 file format number to change again.
4980 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4981 * major incompatible change: The default fasl file extension, i.e. the
4982 default extension for files produced by COMPILE-FILE, has changed
4983 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4985 ** There are many changes in the implementation of the compiler.
4986 SBCL is now essentially a compiler-only implementation of ANSI
4987 Common Lisp. EVAL still "interprets" a few special cases, but
4988 almost all the interesting cases are handled by creating
4989 a LAMBDA expression, calling COMPILE on it, then calling
4990 FUNCALL on the result.
4991 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4992 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4993 Since the code is newer, there might still be some new bugs
4994 (though not as many as before Martin Atzmueller's fixes:-). But
4995 the new code is substantially simpler and clearer, and hopefully
4996 any remaining bugs will be simpler, less fundamental, and more
4997 fixable then the bugs in the old code.
4998 ** The revised compiler is still a little unsteady on its feet.
5000 *** The debugging information it produces (particularly the names
5001 of FUNCTION objects) is sometimes much less useful than what
5002 the old compiler produced.
5003 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5004 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5005 within a MACROLET) has been temporarily weakened.
5006 ** There are new compiler optimizations for various functions:
5007 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5008 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5009 *** the math functions TRUNCATE, FLOOR, and CEILING
5010 *** the function-of-all-trades COERCE
5011 Mostly these should be transparent, but there's one
5012 potentially-annoying problem (bug 117): when the compiler
5013 inline-expands a function and does type analysis on the result,
5014 it can create control paths which have type mismatches, and
5015 when it can't prove that those control paths aren't taken,
5016 it will issue WARNINGs about the type mismatches. This is
5017 a particular problem in practice for the new sequence functions.
5018 It's not clear how this should be fixed, and for now, a
5019 workaround is given in the entry for 117 in the BUGS file.
5020 ** (Because of the interaction between the two previous items --
5021 occasional inlining problems and new inline expansions -- some
5022 of the new sequence function optimizations won't really kick in
5023 completely until debugging information, and then inlining, are
5024 straightened out in some future version.)
5025 * minor incompatible changes:
5026 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5027 DIRECTORY no longer implicitly promotes NIL slots of its
5028 pathname argument to :WILD. In particular, when you ask for the
5029 contents of a directory (which you used to be able to do without
5030 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5031 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5032 ** changes in behavior that ANSI explicitly defines to be
5033 implementation dependent:
5034 *** The new compiler-only implementation still conforms with ANSI,
5035 but acts a little different than before. Besides the obvious
5036 changes in performance tradeoffs (that the cost per form passed
5037 to EVAL has gone up, and the cost per form executed by EVAL
5038 has gone down), the behavior of the system changes a little
5039 because there are no longer any interpreted function objects.
5040 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5041 e.g. doing COMPILE on the output of interactive DEFUN is
5043 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5045 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5046 has changed from (:CL) to NIL.
5047 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5048 e.g. #\Newline and #\Tab, don't have names specified in the
5049 ANSI Common Lisp standard, is now based on their ASCII symbolic
5050 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5051 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5052 are no longer used for output.
5053 ** changes in internal implementation constants:
5054 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5055 4 million. (If your application spends a lot of time GCing and
5056 you have a lot of RAM, you might want to experiment with
5057 increasing it even more.)
5058 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5059 However, almost all old code should still continue to work without
5060 immediate update, as SB-C-CALL is now a (deprecated) nickname
5062 ** Old operator names in the style DEF-FOO are now deprecated in
5063 favor of new corresponding names DEFINE-FOO, for consistency with
5064 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5065 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5066 internal symbols, but a few supported extensions like
5067 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5068 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5069 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5070 etc. as you get deeper into recursive calls to the debugger
5071 command loop, instead of the old "5]", "5]]", "5]]]"
5072 sequence. (I was motivated to do this when squabbles between
5073 ILISP and SBCL left me very deeply nested in the debugger. In the
5074 short term, this change will probably provoke more ILISP/SBCL
5075 squabbles, but hopefully it will be an improvement in the long run.)
5076 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5077 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5078 function, since declaiming return types involving aliens is
5079 (1) annoyingly messy to do by hand and (2) vital to efficient
5080 compilation of code which calls such functions.
5081 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5082 longer reexported by the SB-EXT package. They're solely useful
5083 for alien code, so it seems more logical that you should get
5084 them from the SB-ALIEN package, not in SB-EXT.
5085 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5086 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5087 features. Instead, the code that they used to control is always
5088 built into the system.
5089 * many other bug fixes
5090 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5091 advantage of the new EVAL-WHEN stuff and to clean them up in
5092 general, and they are now more ANSI-compliant in a number of
5093 ways. Martin Atzmueller is responsible for a lot of this.
5094 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5096 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5097 *** correct ERROR type for various file operations
5098 *** some fixes for Lisp streams
5099 *** DEFMETHOD syntax checking
5100 *** changing old weird representation of debug information as
5101 strings (which, among their other deficiencies, don't transform
5102 correctly when you rename packages, and don't change their
5103 print representation when you change things like *PACKAGE*
5104 and *PRINT-LENGTH*) to symbols and lists of symbols
5105 He also made several improvements and fixed several bugs in DESCRIBE.
5106 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5108 *** misbehavior of WRITE-STRING/WRITE-LINE
5109 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5110 and several other LOOP problems as well
5111 *** DIRECTORY when similar filenames are present
5112 *** DEFGENERIC with :METHOD options
5113 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5114 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5115 *** argument ordering in FIND with :TEST option
5116 *** mishandled package designator argument in APROPOS-LIST
5117 *** various problems in the backquote readmacro
5118 *** a bug in APROPOS
5119 *** probably some others that I'm not describing very well here,
5120 since the CVS log documents them by reference to sbcl-devel
5121 messages, and the SourceForge archives aren't working well.:-(
5122 ** Dan Barlow improved the Alpha port (and is making progress on the
5123 PPC port, for those of you who think different).
5124 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5125 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5126 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5127 continues to work on the SPARC port (for those of you in a position
5128 to look down upon our little PC-compatible boxes from a great height).
5129 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5130 and uses that copy, rather than the current dynamic value, when
5131 it's trying to decide whether to truncate output. Thus e.g.
5132 (let ((*print-lines* 50))
5133 (pprint-logical-block (stream nil)
5135 (let ((*print-lines* 8))
5136 (print (aref possiblybigthings i) stream)))))
5137 should now truncate the logical block only at 50 lines, instead of
5138 often truncating it at 8 lines, as it did before.
5139 * The doc/cmucl/ directory, containing old CMU CL documentation
5140 from the time of the fork, is no longer part of the base system.
5141 SourceForge has shut down its anonymous FTP service, and with it
5142 my original plan for distributing the old CMU CL documentation
5143 there. For now, if you need these files you can download an old
5144 SBCL source release and extract them from it.
5145 * The fasl file version number changed again, for dozens of reasons,
5146 some of which are apparent above.
5148 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5149 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5150 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5151 patch, so that DISASSEMBLE output is much nicer.
5152 * The code in the SB-PROFILE package now seems reasonably stable.
5153 I still haven't decided what the final interface should look like
5154 (I'd like PROFILE to interact cleanly with TRACE, since both
5155 facilities use function encapsulation) but if you have a need
5156 for profiling now, you can probably use it successfully with
5157 the current CMU-CL-style interface.
5158 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5159 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5160 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5161 link now returns the dangling link itself, and for similar
5162 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5163 link itself. (In these cases the old code signalled an error and
5164 looped endlessly, respectively.) Thus, DIRECTORY now works even
5165 in the presence of dangling and cyclic symbolic links.
5166 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5167 is now a supported extension again, since the consensus on
5168 sbcl-devel was that it can be useful for ordinary development
5169 work, not just for debugging SBCL itself.
5170 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5171 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5172 that currently-defined functions might be redefined later with
5173 different return types.
5174 * Hash tables can be printed readably, as inspired by CMU CL code
5175 of Eric Marsden and SBCL code of Martin Atzmueller.
5176 * better error handling in CLOS method combination, thanks to
5177 Martin Atzmueller porting Pierre Mai's CMU CL patches
5178 * more overflow fixes for >16Mbyte I/O buffers
5179 * A bug in READ has been fixed, so that now a single Ctrl-D
5180 character suffices to cause end-of-file on character streams.
5181 In particular, now you only need one Ctrl-D at the command
5182 line (not two) to exit SBCL.
5183 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5185 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5186 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5187 does the right thing.
5188 * The implementation of some type tests, especially for CONDITION
5189 types, is now tidier and maybe faster, due to CMU CL code
5190 originally by Douglas Crosher, ported by Martin Atzmueller.
5191 * Some math functions have been fixed, and there are new
5192 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5193 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5194 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5195 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5196 likely to be built into sbcl-0.7.0.)
5197 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5198 CL, ported to SBCL by Martin Atzmueller)
5199 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5200 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5201 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5202 * There's a new slam.sh hack to shorten the edit/compile/debug
5203 cycle for low-level changes to SBCL itself, and a new
5204 :SB-AFTER-XC-CORE target feature to control the generation of
5205 the after-xc.core file needed by slam.sh.
5206 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5207 COMPILE-FILE is no longer supported, so that now every function
5208 gets an entry point, so that block compilation looks a little
5209 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5210 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5211 returns the number of bytes consed since the system started,
5212 rather than the number consed since the first time the function
5213 was called. (The new definition parallels ANSI functions like
5214 CL:GET-INTERNAL-RUN-TIME.)
5215 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5216 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5217 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5218 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5219 * Fasl file version numbers are now independent of the target CPU,
5220 since historically most system changes which required version
5221 number changes have affected all CPUs equally. Similarly,
5222 the byte fasl file version is now equal to the ordinary
5225 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5226 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5227 is no longer recognized. I apologize for this, because it was
5228 listed in SB-EXT as a supported extension, but I found that
5229 its existing behavior was poorly specified, as well as incorrectly
5230 specified, and it looked like too much of a mess to straighten it
5231 out. I have enough on my hands trying to get ANSI stuff to work..
5232 * many patches ported from CMU CL by Martin Atzmueller, with
5233 half a dozen bug fixes in pretty-printing and the debugger, and
5234 half a dozen others elsewhere
5235 * fixed bug 13: Floating point infinities are now supported again.
5236 They might still be a little bit flaky, but thanks to bug reports
5237 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5238 as flaky as they were.
5239 * The --noprogrammer command line option is now supported. (Its
5240 behavior is slightly different in detail from what the old man
5241 page claimed it would do, but it's still appropriate under the
5242 same circumstances that the man page talks about.)
5243 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5244 are now supported, and enabled by default. Thus, the compiler can
5245 handle many floating point and complex operations much less
5246 inefficiently. (Thus e.g. you can implement a complex FFT
5248 * The compiler now detects type mismatches between DECLAIM FTYPE
5249 and DEFUN better, and implements CHECK-TYPE more correctly, and
5250 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5251 thanks to patches from Martin Atzmueller.
5252 * various fixes to make the cross-compiler more portable to
5253 ANSI-conforming-but-different cross-compilation hosts (notably
5254 Lispworks for Windows, following bug reports from Arthur Lemmens)
5255 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5256 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5257 fixed thanks to Pierre Mai's CMU CL patches.
5258 * fixes to keep the system from overflowing internal counters when
5259 it tries to use i/o buffers larger than 16M bytes
5260 * fixed bug 45a: Various internal functions required to support
5261 complex special functions have been merged from CMU CL sources.
5262 (When I was first setting up SBCL, I misunderstood a compile-time
5263 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5264 * improved support for type intersection and union, fixing bug 12
5265 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5266 more obscure bugs as well
5267 * some steps toward byte-compiling non-performance-critical
5268 parts of the system, courtesy of patches from Martin Atzmueller
5269 * Christophe Rhodes has made some debian packages of sbcl at
5270 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5271 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5272 stable, but are nonetheless usable. When he's ready, I'd be happy
5273 to add them to the SourceForge "File Releases" section. (And if
5274 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5275 * new fasl file format version number (because of changes in
5276 internal representation of (OR ..) types to accommodate the new
5277 support for (AND ..) types, among other things)
5279 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5280 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5282 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5284 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5285 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5286 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5287 * DESCRIBE now works on structure objects again.
5288 * Most function call argument type mismatches are now handled as
5289 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5290 know whether the function will be redefined before the call is
5291 executed. (The compiler could flag local calls with full WARNINGs,
5292 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5293 it doesn't keep track of enough information to know whether calls
5294 are local in this sense.)
5295 * Compiler output is now more verbose, with messages truncated
5296 later than before. (There should be some supported way for users
5297 to override the default verbosity, but I haven't decided how to
5298 provide it yet, so this behavior is still controlled by the internal
5299 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5300 src/compiler/ir1util.lisp.)
5301 * Fasl file format version numbers have increased again, because
5302 support for the Gray streams extension changes the layout of the
5303 system's STREAM objects.
5304 * The Gray subclassable streams extension now works, thanks to a
5305 patch from Martin Atzmueller.
5306 * The full LOAD-FOREIGN extension (not just the primitive
5307 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5308 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5309 but like most other programs, it defaults to copying the Unix
5310 environment from the original process instead of starting the
5311 new process in an empty environment.
5312 * Extensions which manipulate the Unix environment now support
5313 an :ENVIRONMENT keyword option which doesn't smash case or
5314 do other bad things. The CMU-CL-style :ENV option is retained
5315 for porting convenience.
5316 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5317 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5319 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5321 * A patch from Martin Atzmueller seems to have solved the SIGINT
5322 problem, and as far as we know, signal-handling now works cleanly.
5323 (If you find any new bugs, please report them!)
5324 * The system no longer defaults Lisp source file names to types
5325 ".l", ".cl", or ".lsp", but only to ".lisp".
5326 * The compiler no longer uses special default file extensions for
5327 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5328 seems to expect a single default extension for all compiled code,
5329 and there's no compelling reason to try to stretch the standard
5330 to allow two different extensions.) Instead, byte-compiled files
5331 default to the same extension as native-compiled files.
5332 * Fasl file format version numbers have increased again, because
5333 a rearrangement of internal implementation packages made some
5334 dumped symbols in old fasl files unreadable in new cores.
5335 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5336 many fewer weird special cases.
5337 * Bug #17 (differing COMPILE-FILE behavior between logical and
5338 physical pathnames) has been fixed, and some related misbehavior too,
5339 thanks to a patch from Martin Atzmueller.
5340 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5341 by Tim Moore, ported to SBCL by Martin Atzmueller.
5342 * Martin Atzmueller fixed several filesystem-related problems,
5343 including bug #36, in part by porting CMU CL patches, which were
5344 written in part by Paul Werkowski.
5345 * More compiler warnings in src/runtime/ are gone, thanks to
5346 more patches from Martin Atzmueller.
5347 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5350 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5352 * DESCRIBE now works on CONDITION objects.
5353 * The debugger now handles errors which arise when trying to print
5354 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5356 * The build system now uses an additional file, customize-target-features.lisp,
5357 to allow local modifications to the target *FEATURES* list. (The point of
5358 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5359 debugging features enabled, without having to worry about propagating it
5360 into everyone's system when I do a "cvs update".) When no
5361 customize-target-features.lisp file exists, the target *FEATURES* list
5362 should be constructed the same way as before.
5363 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5364 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5365 warn about behavior which is undefined under the ANSI spec. Note: This
5366 is specified by ANSI, but it's not very popular with programmers.
5367 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5368 macro in the SBCL sources for an example of a workaround which you
5369 might use to make portable ANSI-standard code which does what you want.
5370 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5371 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5372 when it's used as a non-toplevel form. (This is required in order
5373 to implement the DEFCONSTANT-EQX macro.)
5374 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5375 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5376 funny things, due to bugs in the implementation of EVAL-WHEN
5377 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5378 non-toplevel DEFCONSTANTs are uncommon.)
5379 * The core file version number and fasl file version number have been
5380 incremented, because the old noncompliant DEFCONSTANT behavior involved
5381 calling functions which no longer exist, and because I also took the
5382 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5383 * fixed bug 1 (error handling before read-eval-print loop starts), and
5384 redid debugger restarts and related debugger commands somewhat while
5386 ** The QUIT debugger command is gone, since it did something
5387 rather different than the SB-EXT:QUIT command, and since it never
5388 worked properly outside the main toplevel read/eval/print loop.
5389 Invoking the new TOPLEVEL restart provides the same functionality.
5390 ** The GO debugger command is also gone, since you can just invoke
5391 the CONTINUE restart directly instead.
5392 ** The TOP debugger command is also gone, since it's redundant with the
5393 FRAME 0 command, and since it interfered with abbreviations for the
5395 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5397 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5398 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5399 some porting work by Martin Atzmueller)
5400 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5401 with a boatload of patches which he ported to SBCL. Now that those
5403 ** The system tries to make sure that its low-priority messages
5404 are prefixed by semicolons, to help people who like to use
5405 syntax highlighting in their ILISP buffer. (This patch
5406 was originally due to Raymond Toy.)
5407 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5408 patches originally written by Raymond Toy.
5409 ** The compiler understands coercion between single-value and
5410 multiple-VALUES type expressions better, getting rid of some very
5411 weird behavior, thanks to patches originally by Robert MacLachlan
5412 and Douglas Crosher.
5413 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5414 lambda lists, thanks to a patch originally by Pierre Mai.
5415 ** The system no longer bogusly warns about "abbreviated type
5417 ** The compiler gets less confused by inlining and RETURN-FROM,
5418 thanks to some patches originally by Tim Moore.
5419 ** The system no longer hangs when dumping circular lists to fasl
5420 files, thanks to a patch originally from Douglas Crosher.
5421 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5422 undefined function error.
5423 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5424 in structure slot initforms) for now, documented workaround instead:-|
5425 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5426 * fixed bug 5: added stubs for various Gray stream functions called
5427 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5428 installed, at least appropriate type errors are generated
5429 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5430 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5431 consistently in DEFMETHOD forms.
5432 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5433 it doesn't seem to affect SBCL after all
5434 * The C runtime system now builds with better optimization and many
5435 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5437 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5439 * The system is now under CVS at SourceForge (instead of the
5440 CVS repository on my home machine).
5441 * The new signal handling code has been tweaked to treat register
5442 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5443 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5444 downstream, e.g. in debug-int.lisp, has implicit dependencies
5445 on the unsignedness of integer representation of machine words,
5446 and that caused the system to bomb out with infinite regress
5447 when trying to recover from type errors involving signed values,
5448 e.g. (BUTLAST '(1 2 3) -1).)
5449 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5450 (This was one of the bugs Peter Van Eynde reported back in July.)
5451 * The system now uses code inspired by Colin Walters' O(N)
5452 implementation of MAP (from the cmucl-imp@cons.org mailing
5453 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5454 inline the MAP operation, and there is more than one
5455 sequence argument to the MAP call (so that it can't just
5456 do ETYPECASE once and for all based on the type of the
5457 single sequence argument). (The old non-inline implementation
5458 of the general M-argument sequence-of-length-N case required
5459 O(M*N*N) time when any of the sequence arguments were LISTs.)
5460 * The QUIT :UNIX-CODE keyword argument has been renamed to
5461 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5462 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5464 * Raymond Wiker's patches to port dynamic loading from Linux to
5465 FreeBSD have been added.
5466 * The BUGS file is now more nearly up to date, thanks in large part
5467 to Martin Atzmueller's review of it.
5468 * The debugger now flushes standard output streams before it begins
5469 its output ("debugger invoked" and so forth).
5470 * The core version number and fasl file version number have both
5471 been incremented, because of incompatible changes in the layout
5473 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5474 used to not be called for a saved Lisp image.)
5475 * Martin Atzmueller's version of a patch to fix a compiler crash,
5476 as posted on sbcl-devel 13 September 2000, has been installed.
5477 * Instead of installing Martin Atzmueller's patch for the
5478 compiler transform for SUBSEQ, I deleted the compiler transform,
5479 and transforms for some similar consing operations.
5480 * A bug in signal handling which kept TRACE from working on OpenBSD
5482 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5483 away by constant folding
5484 * The system now defines its address space constants in one place
5485 (in the Lisp sources), and propagates them automatically elsewhere
5486 (through GENESIS and the sbcl.h file). Therefore, patching the
5487 address map is less unnecessarily tedious and error-prone. The
5488 Lisp names of address space constants have also been systematized.
5489 * CVS tags like dollar-Header-dollar have been removed from
5490 the sources, because they have never saved me trouble and
5491 they've been source of trouble working with patches and other
5492 diff-related operations.
5493 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5494 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5496 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5498 * The system has been ported to OpenBSD.
5499 * The system now compiles with a simple "sh make.sh" on the systems
5500 that it's supported on. I.e., now you no longer need to tweak
5501 text in the target-features.lisp-expr and symlinks in src/runtime/
5502 by hand, the make.sh takes care of it for you.
5503 * The system is no longer so grossly inefficient when compiling code
5504 involving vectors implemented as general (not simple) vectors (VECTOR T),
5505 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5506 which dares to use the various sequence functions on non-simple
5507 vectors, takes less of a performance hit.
5508 * There is now a primitive type predicate VECTOR-T-P
5509 to test for the (VECTOR T) type, so that e.g.
5510 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5511 can now be compiled with some semblance of efficiency. (The old code
5512 turned the type declaration into a full call to %TYPEP at runtime!)
5513 * AREF on (VECTOR T) is still not fast, since it's still compiled
5514 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5515 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5516 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5517 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5518 without making full calls to SUBTYPEP at runtime.
5519 (Some analogous efficiency issues for non-simple vectors specialized to
5520 element types other than T, or for non-simple multidimensional arrays,
5521 have not been addressed. They could almost certainly be handled the
5522 same way if anyone is motivated to do so.)
5523 * The changes in array handling break binary compatibility, so
5524 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5525 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5526 instead of (VALUES T T).
5527 * By following the instructions that Dan Barlow posted to sbcl-devel
5528 on 2 July 2000, I was able to enable primitive dynamic object
5529 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5530 functionality is not implemented (since it calls ld to resolve
5531 library references automatically, requiring RUN-PROGRAM for its
5532 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5533 try to resolve library references) is now supported.
5534 * The system now flushes the standard output streams when it terminates,
5535 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5536 them at several other probably-convenient times, e.g. in each pass of
5537 the toplevel read-eval-print loop, and after evaluating a form given
5538 as an "--eval" command-line option. (These changes were motivated by a
5539 discussion of stream flushing issues on cmucl-imp in August 2000.)
5540 * The source transform for TYPEP of array types no longer assumes
5541 that an array whose element type is a not-yet-defined type
5542 is implemented as an array of T, but instead punts, so that the
5543 type will be interpreted at runtime.
5544 * There is now some support for cross-compiling in make.sh: each of
5545 the phases of make.sh has its own script. (This should be transparent
5546 to people doing ordinary, non-cross-compile builds.)
5547 * Since my laptop doesn't have hundreds of megabytes of memory like
5548 my desktop machine, I became more motivated to do some items on
5549 my to-do list in order to reduce the size of the system a little:
5550 ** Arrange for various needed-only-at-cold-init things to be
5551 uninterned after cold init. To support this, those things have
5552 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5553 symbols with such names are now uninterned after cold init).
5554 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5555 fasl files for cold load.
5556 ** Remove the old compiler structure pooling code (which used to
5557 be conditional on the target feature :SB-ALLOC) completely.
5558 ** Redo the representation of some data in cold init to be more compact.
5559 (I also looked into supporting byte compiled code at bootstrap time,
5560 which would probably reduce the size of the system a lot, but that
5561 looked too complicated, so I punted for now.)
5562 * The maximum signal nesting depth in the src/runtime/ support code has
5563 been reduced from 4096 to 256. (I don't know any reason for the very
5564 large old value. If the new smaller value turns out to break something,
5565 I'll probably just bump it back up.)
5566 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5568 * Many, many bugs reported by Peter Van Eynde have been added to
5569 the BUGS list; some have even been fixed.
5570 * While enabling dynamic object file loading, I tried to make the
5571 code easier to understand, renaming various functions and variables
5572 with less ambiguous names, and changing some function calling
5573 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5574 * While trying to figure out how to do the OpenBSD port, I tried to
5575 clean up some of the code in src/runtime/. In particular, I dropped
5576 support for non-POSIX signal handling, added various comments,
5577 tweaked the code to reduce the number of compilation warnings, and
5578 renamed some files to increase consistency.
5579 * To support the new automatic configuration functionality in make.sh,
5580 the source file target-features.lisp-expr has been replaced with the
5581 source file base-target-features.lisp-expr and the machine-generated
5582 file local-target-features.lisp-expr.
5583 * fixed a stupid quoting error in make.sh so that using CMU CL
5584 "lisp -batch" as cross-compilation host works again
5586 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5588 * DESCRIBE no longer tries to call itself recursively to describe
5589 bound/fbound values, so that it no longer fails on symbols which are
5590 bound to themselves (like keywords, T, and NIL).
5591 * DESCRIBE now works on generic functions.
5592 * The printer now prints less-screwed-up representations of closures
5593 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5594 * A private symbol is used instead of the :EMPTY keyword previously
5595 used to mark empty slots in hash tables. Thus
5596 (DEFVAR *HT* (MAKE-HASH-TABLE))
5597 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5598 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5599 now does what ANSI says that it should. (You can still get
5600 similar noncompliant behavior if bang on the hash table
5601 implementation with all the symbols you get back from
5602 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5603 This breaks binary compatibility, since tests for equality to
5604 :EMPTY are wired into things like the macroexpansion of
5605 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5607 * There's now a minimal placeholder implementation for CL:STEP,
5608 as required by ANSI.
5609 * An obscure bug in the interaction of the normal compiler, the byte
5610 compiler, inlining, and structure predicates has been patched
5611 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5612 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5614 * Missing ordinary arguments in a macro call are now detected even
5615 when the macro lambda list contains &KEY or &REST.
5616 * The debugger no longer complains about encountering the top of the
5617 stack when you type "FRAME 0" to explicitly instruct it to go to
5618 the top of the stack. And it now prints the frame you request even
5619 if it's the current frame (instead of saying "You are here.").
5620 * As specified by ANSI, the system now always prints keywords
5621 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5623 * The default initial SIZE of HASH-TABLEs is now smaller.
5624 * Type information from CLOS class dispatch is now propagated
5625 into DEFMETHOD bodies, so that e.g.
5626 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5628 is now basically equivalent to
5629 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5630 (DECLARE (TYPE SINGLE-FLOAT X))
5632 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5633 operation, without having to do run-time type dispatch.
5634 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5635 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5636 * Since I don't seem to be making big file reorganizations very often
5637 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5638 is overflowing my ability to conveniently back them up), I've finally
5639 checked the system into CVS. (The CVS repository is on my home system,
5640 not at SourceForge -- putting it on SourceForge might come later.)
5641 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5642 high-level GC-NOTIFY-FOO functions send their output. (There's
5643 still very little control of where low-level verbose GC functions
5644 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5645 less than it used to -- the GC-NOTIFY-FOO functions are now under
5646 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5647 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5648 in only one place in the source code, and propagates it automatically
5649 everywhere that it's needed. Thus e.g. when I bump the version from
5650 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5651 * The C source files now include boilerplate legalese and documentation
5652 at the head of each file (just as the Lisp source files already did).
5653 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5654 to his page will be replaced with a link to his new CLiki service.
5656 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5658 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5659 * The build process now looks for GNU make under the default name "gmake",
5660 instead of "make" as it used to. If GNU make is not available as "gmake"
5661 on your system, you can change this default behavior by setting the
5662 GNUMAKE environment variable.
5663 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5664 can build without error under CMU CL.
5666 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5668 * There is now a partial SBCL user manual (with some new text and some
5669 text cribbed from the CMU CL manual).
5670 * The beginnings of a profiler have been added (starting with the
5671 CMU CL profiler and simplifying and cleaning up). Eventually the
5672 main interface should be through the TRACE macro, but for now,
5673 it's still accessed through vaguely CMU-CL-style functions and macros
5674 exported from the package SB-PROFILE.
5675 * Some problems left over from porting CMU CL to the new
5676 cross-compilation bootstrap process have been cleaned up:
5677 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5678 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5679 part when getting rid of the compiler *BACKEND* stuff.)
5680 ** The value of *NULL-TYPE* was screwed up, because it was
5681 being initialized before the type system knew the final
5682 definition of the 'NULL type. This screwed up several key
5683 optimizations in the compiler, causing inefficiency in all sorts
5684 of places. (I found it because I wanted to understand why
5685 GET-INTERNAL-RUN-TIME was consing.)
5686 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5687 PROCLAIM FTYPE information. Unfortunately this broke binary
5688 compatibility again, since now the forms output by DEFGENERIC
5689 to refer to functions which didn't exist in 0.6.3.
5690 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5691 can use the new (as of 0.6.3) transform for SOME into MAP into
5693 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5694 values to (INTEGER 0 1000000), so that the time code will no longer
5695 occasionally get blown up by Linux returning 1000000 microseconds
5696 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5697 its output conform to the ANSI spec. (Alas, this makes its output
5698 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5699 * A full call to MAP NIL with a single sequence argument no longer conses.
5700 * fixes to problems pointed out by Martin Atzmueller:
5701 * The manual page no longer talks about multiprocessing as though
5702 it were currently supported.
5703 * The ILISP support patches have been removed from the distribution,
5704 because as of version 5.10.1, ILISP now supports SBCL without us
5705 having to maintain patches.
5706 * added a modified version of Raymond Toy's recent CMU CL patch for
5707 EQUALP comparison of HASH-TABLE
5709 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5711 * The system still can't cross-compile itself with
5712 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5713 entails), but at least it can compile more of itself that way
5714 than it used to be able to, and various buglets which were uncovered
5715 by trying to cross-compile itself that way have now been fixed.
5716 * This release breaks binary compatibility again. This time
5717 at least I've incremented the FASL file format version to 2, so that the
5718 problem can be detected reliably instead of just causing weird errors.
5719 * various new style warnings:
5720 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5721 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5722 ** using the lexical binding of a variable named in the *FOO* style
5723 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5724 as specified by ANSI.
5725 * *RANDOM-STATE* is no longer automatically initialized from
5726 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5727 default behavior of the system is to repeat its behavior every time
5728 it's run. If you'd like to change this behavior, you can always
5729 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5730 old convention there was no comparably easy way to get the system to
5731 repeat its behavior every time it was run.
5732 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5733 FTYPE declarations has been removed, in favor of their ANSI
5734 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5735 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5736 the types of their sequence arguments can be determined at compile time.
5737 This is done through a new open code expansion for MAP which eliminates
5738 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5739 argument types can be determined at compile time.
5740 * The optimizer now transforms COERCE into an identity operation when it
5741 can prove that the coerced object is already of the correct type. (This
5742 can be a win for machine generated code, including the output of other
5743 optimization transforms, such as the MAP transform above.)
5744 * Credit information has been moved from source file headers into CREDITS.
5745 * Source file headers have been made more standard.
5746 * The CASE macro now compiles without complaining even when it has
5749 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5751 * (Note that the way that the PCL macroexpansions were rewritten
5752 to accommodate the change in DEFGENERIC below breaks binary
5753 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5754 not run under sbcl-0.6.2. Once we get out of alpha releases,
5755 i.e. hit release 1.0.0, we'll probably try to maintain binary
5756 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5757 and sbcl-1.4.4. Until then, however, it might be fairly common
5758 for maintenance releases to break binary compatibility.)
5759 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5761 * The reporting of unhandled signals has been changed to print some
5762 explanatory text as well as the report form. (Previously only
5763 the report form was printed.)
5764 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5765 it defines, so that the compiler no longer issues undefined function
5766 warnings for compiled-but-not-yet-loaded generic functions.
5767 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5768 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5769 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5770 section of the ANSI spec are supported.
5771 * The "" nickname for the "KEYWORD" package has been removed.
5772 The reader still handles symbol tokens which begin with a package marker
5773 as keywords, but it doesn't expose its mechanism for doing so in the
5774 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5775 * The system now issues STYLE-WARNINGs for contradictory TYPE
5776 proclamations. (Warnings for contradictory FTYPE proclamations would
5777 be nice too, but those can't be done usefully unless the type system
5778 is made smarter about FUNCTION types.)
5779 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5780 systematized, so that "*target-*.lisp is supposed to exist only on the
5781 target and imply that there's a related file which exists on the
5782 host, and *host-*.lisp is supposed to exist only on the host and imply
5783 that there's a related file which exists on the target. This involves a
5784 lot of renaming. Hopefully the acute confusion caused by the renaming
5785 will be justified by the reduction in chronic confusion..
5786 ** runtime-type.lisp -> early-target-type.lisp
5787 ** target-type.lisp -> late-target-type.lisp
5788 ** early-host-format.lisp -> early-format.lisp
5789 ** late-host-format.lisp -> late-format.lisp
5790 ** host-error.lisp -> misc-error.lisp
5791 ** early-error.lisp -> early-target-error.lisp
5792 ** late-error.lisp -> late-target-error.lisp
5793 ** host-defboot.lisp -> early-defboot.lisp
5794 ** code/misc.lisp -> code/target-misc.lisp
5795 ** code/host-misc.lisp -> code/misc.lisp
5796 ** code/numbers.lisp -> code/target-numbers.lisp
5797 ** code/early-numbers.lisp -> numbers.lisp
5798 ** early-host-type.lisp -> early-type.lisp
5799 ** late-host-type.lisp -> late-type.lisp
5800 ** host-typep.lisp -> typep.lisp
5801 ** load.lisp -> target-load.lisp
5802 ** host-load.lisp -> load.lisp
5803 ** host-disassem.lisp -> disassem.lisp
5804 ** host-insts.lisp -> insts.lisp
5805 ** byte-comp.lisp -> target-byte-comp.lisp
5806 ** host-byte-comp.lisp -> byte-comp.lisp
5807 ** host-signal.lisp -> signal.lisp
5808 ** host-defstruct.lisp -> defstruct.lisp
5809 ** late-target-type.lisp -> deftypes-for-target.lisp
5810 Furthermore, several other previously target-only files foo.lisp (e.g.
5811 hash-table.lisp and random.lisp) have been split into a target-and-host
5812 foo.lisp file and a target-only target-foo.lisp file, with their key type
5813 definitions in the target-and-host part, so that the cross-compiler will
5814 know more about target types.
5815 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5816 gone away. In their place are various *BACKEND-FOO* variables
5817 corresponding to the slots of the old structure.
5818 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5819 into the target SBCL has been fixed.
5820 * The chill.lisp system for loading cold code into a running SBCL
5822 * Support for the CMU CL "scavenger hook" extension has been removed.
5823 (It was undocumented and unused in the CMU CL sources that SBCL was
5824 derived from, and stale in sbcl-0.6.1.)
5825 * Various errors in the cross-compiler type system were detected
5826 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5827 (enabling various consistency checks). Many of them were fixed,
5828 but some hard problems remain, so the compiler is back to
5829 running without *TYPE-SYSTEM-INITIALIZED* for now.
5830 * As part of the cross-compiler type system cleanup, I implemented
5831 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5832 * I have started adding UNCROSS calls throughout the type system
5833 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5834 on cross-compiler input files will be able to go away, and various
5836 * CONSTANTP now returns true for quoted forms (as explicitly required
5839 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5841 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5842 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5843 (MAKE-LIST -1). In the longer term, it ought to become true
5844 that declarations are assertions even at SAFETY 1. For now, it's not
5845 quite true even at SAFETY 3, but it's at least more nearly true..
5846 (Note that this change seems to increases the size of the system by
5847 O(5%) and to decrease the speed of the compiler by 20% or more.)
5848 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5849 for the problem of printing dozens of lines of distracting information
5850 about low-level system machinery as part of the top stack frame
5851 on entry to the debugger when an undefined function was called.
5852 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5853 is not reset to COMMON-LISP-USER.
5854 * Compilation of stuff related to dyncount.lisp has been made conditional
5855 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5856 smaller. The various dyncount-related symbols have been moved into
5857 a new "SB-DYNCOUNT" package.
5858 * tty-inspect.lisp has been renamed to inspect.lisp.
5859 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5860 feature has gone away. (When we eventually port to other flavors of
5861 libc and/or Unix, we'll try to make the differences between flavors
5862 invisible at the user level.)
5863 * Various other *FEATURES* tags, and/or their associated conditionals,
5864 have been removed if obsolescent, or given better documentation, or
5865 sometimes given more-mnemonic names.
5867 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5869 * tidied up "make.sh" script
5870 * tidied up system directory structure
5871 * better "clean.sh" behavior
5872 * added doc/FOR-CMUCL-DEVELOPERS
5873 * many many small tweaks to output format, e.g. removing possibly-confusing
5874 trailing #\. character in DESCRIBE-INSTANCE
5875 * (EQUALP #\A 'A) no longer signals an error.
5876 * new hashing code, including EQUALP hashing
5877 * tidied up Lisp initialization and toplevel
5878 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5879 * command line argument processing
5880 * added POSIX-GETENV function to deal with Unix-ish environment variables
5881 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5882 terminating SBCL on EOF
5883 * non-verbose GC by default
5884 * There is no more "sbcl" shell script; the sbcl file is now the C
5885 runtime executable (just like CMU CL).
5886 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5888 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5889 symbol and package information as Lisp native symbol and package objects
5890 instead of strings naming symbols and strings naming packages. This way,
5891 whenever packages are renamed (as in warm init), debug information is
5892 transformed along with everything else.
5893 * tweaked the optimization policy declarations which control the building
5894 of SBCL itself. Now, among other things, the system no longer saves
5895 source location debugging information. (This helps two problems at once
5896 by reducing SBCL size and by keeping SBCL from trying to look for its
5897 sources -- which may not exist -- when reporting errors.)
5898 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5899 debugging and testing purposes
5900 * cleaned up printing, making the printer call PRINT-OBJECT for
5901 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5902 methods, giving nearly-ANSI behavior
5903 * converted almost all special variables to use *FOO* naming convention
5904 * deleted PARSE-TIME functionality, since it can be done portably
5905 * moved some files out of cold init into warm init
5906 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5908 * regularized formatting of source files
5909 * added an install.sh script
5910 * fixed ridiculous memory usage of cross-compiler by making
5911 compiler/alloc.lisp not try to do pooling unless it can hook
5912 itself into the GC of the cross-compilation host. Now the system
5913 builds nicely on my old laptop.
5914 * added :SB-ALLOC in target-features.lisp-expr
5915 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5916 was not implemented)
5917 * re-did condition handling and note reporting in the compiler. Notes
5918 are no longer handled by signalling conditions. Style warnings
5919 and warnings are handled more correctly and reported in such a way
5920 that it's easy to find one or the other in your output (so that you
5921 can e.g. figure out which of many problems caused COMPILE-FILE to
5923 * changed the severity of several compiler warnings from full WARNING
5924 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5925 compiler note reporting so that it doesn't use the condition system
5926 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5927 COMPILE-FILE command)
5928 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5929 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5930 no longer supported, since their implementation was deeply intertwingled
5931 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5932 * removed bogus "support" for compiler macros named (SETF FOO), and
5933 removed the compiler macro for SETF INFO (but only after making a fool
5934 of myself on the cmucl-imp mailing list by posting a bogus patch for
5935 DEFINE-COMPILER-MACRO..)
5936 * Compiled files containing forms which have side effects on the Lisp
5937 reader (such as DEFPACKAGE forms) are now handled more correctly.
5938 (Compiler queuing of top level lambdas has been suppressed by setting
5939 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5940 * deleted various currently-unused source files, e.g. gengc.lisp. They
5941 may be added back at some point e.g. when porting to other architectures,
5942 but until they are it's distracting to distribute them and to try to
5944 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5945 there were so many of them they're just distractions, and UNCROSS is
5946 known to be able to handle the current sources
5947 * moved PROFILE functionality into TRACE, so that it will be clear
5948 how the wrapping and unwrapping of functions when you profile them
5949 interacts with the wrapping and unwrapping of functions when you
5950 trace them. (Actually, the functionality isn't there yet, but at least
5951 the interface specification is there. Hopefully, the functionality will
5952 arrive with some future maintenance release.)
5953 * removed host-oops.lisp
5954 * changed signature of QUIT function to allow UNIX-CODE argument
5955 * fixed READ-SEQUENCE bug
5956 * tweaked verbose GC output so that it looks more like the progress
5957 output that ANSI specifies for functions like LOAD
5958 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5959 * added <http://sbcl.sourceforge.com> to the banner information printed by