1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.43:
3 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
4 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
5 * enhancement: ALLOCATION-INFORMATION also provides the page the object
7 * enhancement: default dynamic-space size can be configured at build-time
8 without touching source, using the --dynamic-space-size argument to make.sh.
9 * enhancement: DESCRIBE recognizes symbols naming optimization policy
10 qualities, and mentions ALWAYS-BOUND declarations.
11 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
13 * enhancement: ASDF has been updated to 2.009.
14 * enhancement: the system detects known type-erros in calls better,
15 signalling a full warning about violated proclaimed FTYPEs and violations
16 of derived FTYPEs within the same file, including self-calls.
17 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
18 * optimization: constant-folding exploits numeric and character types, in
19 addition member types.
20 * optimization: numeric, character and member types that are inhabited by
21 exactly one value are tested with EQL.
22 * optimization: more conditional branches are eliminated during IR1.
23 Branches are simplified before performing if/if-conversion, and simple
24 equivalent branches (that only read the same constant or variable) are
26 * improvements to the Windows port:
27 ** change: canonical unparsing form for pathname namestrings now uses / as
28 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
29 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
30 on Windows. (thanks to Kalyanov Dmitry)
31 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
33 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
34 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
35 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
36 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
38 * bug fix: interrupts arriving due to CL:OPEN caused an error.
39 * bug fix: overeager character buffering could cause input to block
40 spuriously when reading from a pipe (lp#643686)
41 * bug fix: more efficient timer expiry should avoid starvation on systems
42 where number of SIGALRMs per second is restricted. (lp#375515)
43 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
44 * bug fix: compile-times no longer scale linearly with the size of
45 quoted lists in source-code. (lp#654289)
46 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
47 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
49 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
50 an error for eg. STRUCTURE. (lp#458015)
51 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
52 (lp#613871, thanks to Roman Marynchak)
53 * bug fix: more reliable &REST list type derivation. (lp#655203)
54 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
55 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
56 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
57 also declared NOTINLINE. (lp#655581)
58 * bug fix: the compiler could attempt to emit constant left shifts of
59 greater value than n-word-bits. (lp#309063)
60 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
61 type information for the function being set. (lp#659220)
62 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
63 containing self-calls were recompiled with a new signature, and failed
64 to warn when a self-call using the old signature was left in. (lp#655126)
65 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
66 :DEFAULT when the default external had character size other than 8 bits.
68 * bug fix: derived types of functions in the same file were implicitly
69 trusted, leading to potential heap corruption when those function were
70 defined incompatibly. (lp#657499)
71 * bug fix: existing ASDF source registries are ignored when building
73 * bug fix: short-form DEFSETF checks that the second argument is a symbol
74 (lp#655824, thanks to Roman Marynchak)
75 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
76 package-lock violation was detected. (lp#660752)
77 * bug fix: the system can store different docstrings for a single function
78 under different names. (lp#661631, regression from 1.0.29.24)
79 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
81 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
82 of specified length could confuse the type derivation in unsafe code.
84 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
85 fork with multiple Lisp threads running is made on every platform,
86 not just Darwin. (lp#451111)
88 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
89 * incompatible change: FD-STREAMS no longer participate in the serve-event
90 event-loop by default. (lp#316072)
91 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
92 affects streams from CL:OPEN.
93 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
94 default, but this is liable to change: applications needing serve-event
95 for socket streams should explicitly request it using :SERVE-EVENTS T
97 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
99 * enhancement: CLOS effective method functions and defclass slot typechecking
100 function now have debug names for use in backtraces and profiles.
101 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
103 * enhancement: symbols are printed using fully qualified names in several
104 error and warning messages which are often associated with package
105 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
106 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
107 thanks to Andrew Golding)
108 * bug fix: reading /proc files on Linux works. (lp#425199)
109 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
111 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
112 breaking code that tried to write the value of a printer control variable.
113 (lp#581564, thanks to Stas Boukarev)
114 * bug fix: WRITE compiler macro did not handle output stream designators
115 correctly. (lp#598374, thanks to Stas Boukarev)
116 * bug fix: better availability of names of foreign functions in backtraces
117 on Linux. (lp#626962, thanks to Stas Boukarev)
118 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
119 lp#627581, thanks to Josh Elsasser and Jim Wise)
120 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
121 thanks to Josh Elsasser)
122 * bug fix: using aliases for builtin classes as defmethod specializers
123 without adding DEFTYPEs for them works. (lp#618387)
124 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
126 * bug fix: legally dynamic-extent lists and vectors used as
127 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
128 * bug fix: inline-expansion creating references to dead lambda-variables
129 (lp#454681, thanks to Alexey Dejneka)
130 * bug fix: better error message for bogus numerical arguments to RANDOM.
131 (lp#598986, thanks to Stas Boukarev)
132 * bug fix: the compiler occasionally inlined references from incompatible
133 environments occurs. (lp#308951)
134 * bug fix: the compiler threw an error when trying to compile a local
135 function (labels or flet) known to take a specialized complex argument.
136 (not in launchpad, reported by sykopomp in #lispgames)
137 * bug fix: package-locks failed to protect against compile-time effects of
138 DEFUN when the symbol previously had a macro definition. (lp#576637)
139 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
140 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
141 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
142 * bug fix: evaluation in debugger REPL works using the global context when
143 in frames that do not have sufficient debug information.
144 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
146 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
148 * bug fix: interrupt taking longer than the requested period caused SLEEP
149 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
151 changes in sbcl-1.0.42 relative to sbcl-1.0.41
153 ** Cross-compilation host is now specified to make.sh using
154 command-line argument --xc-host=<command> instead of a positional
155 argument. (thanks to Daniel Herring)
156 ** Install location can be specified to make.sh using command-line
157 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
158 * optimization: The default implementation of
159 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
160 * enhancement: Explicit memory barrier operations are now available for use
161 by multithreaded code. See documentation for details.
162 * enhancement: Experimental support for threading on Linux/PPC.
163 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
164 * bug fix: EXPT signals an error if first argument is a zero and second
165 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
166 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
167 (lp#576594, thanks to Roman Marynchak)
168 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
169 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
171 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
172 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
173 cached, leading to many fewer expensive calls to
174 COMPUTE-APPLICABLE-METHODS.
175 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
176 CLASS argument, search for and call an appropriate optimized ctor function
178 * bug fix: WRITE always returns the correct value.
180 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
181 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
182 * bug fix: Name conflicts between symbols passed as arguments to a single
183 call to IMPORT no longer add multiple symbols with the same name to the
184 package (detectable via DO-SYMBOLS).
185 * bug fix: support building without the dlshim on darwin x86 and x86-64
187 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
189 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
190 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
192 * bug fix: linkage-table entries on PPC now no longer overflow their
193 space allocation (potentially causing crashes if they are written out
195 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
196 platforms, preventing the GC from seeing stale pointers on the control
197 stack in subsequent GCs (which would, and does, break invariants).
198 * bug fix: 32-bit unicode external formats now work on big-endian systems.
199 * bug fix: Literal characters with code points greater than about 32767
200 now work on PPC UNICODE builds.
201 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
202 high order bits are explicitly cleared out. In some contrived situations,
203 this could lead to wrong results in mixed real/complex float arithmetic.
204 * bug fix: Fix function/macro redefinition warnings when building with
205 clisp. (lp#576787, thanks to Josh Elsasser)
206 * new platform: experimental support for ppc/openbsd (thanks to Josh
208 * bug fix: Floating-point traps now work on ppc/linux.
210 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
211 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
212 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
213 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
214 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
215 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
216 SB-THREAD:GRAB-MUTEX.
217 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
218 contain additional data structures and tools for concurrent programming;
219 at the moment it contains a lock-free queue, and a lock-free mailbox
221 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
222 GET-MUTEX but takes &key rather than &optional parameters. Also added
223 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
225 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
226 SB-THREAD:WAIT-ON-SEMAPHORE.
227 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
229 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
230 conditions to defer the deadline for forever.
231 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
233 * enhancement: errors from NO-APPLICABLE-METHOD and
234 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
235 generic function call.
236 * enhancement: SB-BSD-SOCKET improvements
237 ** sockets and socket streams now have a more informative printed
238 representation based on the corresponding SOCKET-NAME and
240 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
242 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
243 CL:CLOSE when appropriate, and no longer disassociates the stream
244 from the socket if close failed. (lp#543951)
245 * improvements to the instrumenting profiler
246 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
247 ** optimization: counters no longer use locks for the overflow mode.
248 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
249 incurred an off-by-one miscount.
250 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
251 * enhancement: improved DEFMETHOD pretty-printing.
252 * enhancement: perform range reduction when arguments are too large for
253 x87's transcendentals (instead of returning 0). (lp#327192)
254 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
255 some of CL-PPCRE's macros. (lp#570079)
256 * enhancement: our machine code is slightly less hostile to valgrind on
258 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
259 to Robert Swindells and Aleksej Saushev)
260 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
261 * bug fix: a rare case of startup-time page table corruption.
262 * bug fix: a semaphore with multiple waiters and some of them unwinding due
263 to timeouts could be left in an inconsistent state.
264 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
265 * bug fix: misoptimization of multiplication by one in
266 (SB-C::FLOAT-ACCURACY 0) policies.
267 * bug fix: miscounts in SB-PROFILE.
268 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
269 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
270 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
271 up itself" (March 2010) for further details.
272 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
273 against length of the list if the element is found before the specified
274 END is reached. (thanks to Alec Berryman, lp#554385)
275 * bug fix: errors signalled during package graph modification no longer
276 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
277 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
278 :SB-DOC feature. (lp#552564)
279 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
280 * bug fix: more robust runtime executable path detection. (lp#375549)
281 * bug fix: GCD always returns positive values. (lp#413680)
282 * bug fix: Converting division to multiplication by reciprocal handles
284 * bug fix: We were too eager in eliding range reduction tests on x87.
285 The maximal magnitude is 2^63, not 2^64.
286 * bug fix: Transforms for TRUNCATE don't die when the result is completely
288 * bug fix: Maybe restore buildability on Alpha.
289 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
291 * bug fix: RANDOM-STATE can be printed readably again.
292 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
293 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
294 types) could result in type mismatches during compilation.
296 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
297 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
298 stack frame thrown from.
299 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
300 compiler optimization qualities inside dynamic extent of its body.
301 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
302 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
304 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
305 constraint propgation, allowing better compilation eg. when used to
306 access structures with WITH-SLOTS. (lp#520366)
307 * optimization: the compiler is now more aware of the type of the underlying
308 storage vector for multidimensional simple arrays resulting in better code
309 for accessing such arrays.
310 * optimization: passing NIL as the environment argument to TYPEP no longer
311 inhibits optimizing it. (lp#309788)
312 * optimization: more efficient register usage when handling single-float
313 arguments on x86-64. (thanks to Lutz Euler)
314 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
315 pre-allocated temporary vectors. (lp#496249)
316 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
317 in :INITIAL-CONTENTS. (lp#523612)
318 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
319 functions. (lp#524707)
320 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
321 WITH-SLOTS usages during compilation.
322 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
323 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
324 all x86oid platforms with :UD2-BREAKPOINTS target feature.
325 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
326 instruction (tested on x86oid linux with ud2-breakpoints).
327 * bug fix: slam.sh now works on win32.
328 * bug fix: better differences of numeric types. (lp#309124)
329 * bug fix: arrays declared intersection and union types can have their
330 upgraded element type derived. (lp#316078)
331 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
332 threads started during profiling. (lp#472499)
333 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
335 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
336 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
337 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
338 values instead of signaling an error. (lp#309093)
339 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
341 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
342 declarations (lp#497321)
343 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
344 and failed to detect circular lists (lp#452008)
345 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
347 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
348 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
349 due to it, so that handlers can run.
350 * bug fix: reparsing undefined types if they have become defined since
352 * bug fix: missing &REST type in a proclamation for a function with both
353 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
354 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
355 expanded calls (lp#542174)
356 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
357 than just at toplevel form.
359 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
360 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
361 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
362 but work on type specifiers.
363 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
364 to name a type specifier.
365 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
366 specifier is valid where "valid" basically means "would be accepted as
367 second argument of TYPEP".
368 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
369 returns the function's declared, or derived FTYPE.
370 * new feature: SB-POSIX now supports accessing the d_ino member of
371 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
372 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
373 provide for seeding a RANDOM-STATE object with user-provided data or
374 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
375 attempt to initialize the returned state from the operating system's
376 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
377 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
378 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
379 * bug fix: Fix grammar and style issues for the docstrings of
380 printer-related variables and functions. (Thanks to mon_key; launchpad
382 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
384 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
385 in a row even though a handler defered the deadline long into the
387 * bug fix: A deadline handler was run without interrupts enabled for a
388 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
389 in infinitely spinning, non-killable threads.
390 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
391 before reaching the erring stack frame.
392 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
393 real power. (launchpad bug lp#525949)
394 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
395 GENCGC platforms. (launchpad bug lp#529014)
396 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
397 (launchpad bug lp#525916)
398 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
399 (Thanks to Robert Goldman)
401 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
402 * optimization: ROUND with a single single-float or double-float argument
403 is properly inlined when possible.
404 * optimization: Slightly better code is generated for integer<->float
405 conversions and for single-float<->double-float conversions on x86-64.
406 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
407 code for 32-bit and 64-bit rotations on x86-64.
408 * bug fix: The install script changes the ownership of directories as well
409 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
410 launchpad bug lp#508485)
411 * bug fix: TRUNCATE with a single single-float or double-float argument is
412 properly inlined when possible. (launchpad bug lp#489388)
413 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
414 no longer causes a compiler error on x86 and ppc.
415 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
416 always relative to *READTABLE* rather than the passed argument.
418 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
419 * minor incompatible change: threading support is now enabled by default
421 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
423 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
424 are now caught and reported just like errors during macroexpansion.
425 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
426 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
427 * enhancement: ASDF systems can now depends on SB-QUEUE.
428 * fixes and improvements related to Unicode and external formats:
429 ** bug fix: error handling and restart usage in the ucs-2 external format
431 ** there is now an implementation of the ucs-4 external format.
432 ** the utf-16 and utf-32 external formats are supported.
433 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
434 in the environment. setenv() and unsetenv() are also provided. (reported by
435 Fare Rideau; launchpad bug lp#460455)
436 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
437 loading. This ensures sensible errors for .FASL files from other
438 implementations on case-insensitive filesystems. (reported by Willem
439 Broekema; launchpad bug lp#489417)
440 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
441 Willem Broekema; launchpad bug lp#489698).
442 * bug fix: some minor code rearrangements to reenable warning-free building
443 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
444 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
446 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
449 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
450 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
451 * improvement: support O_LARGEFILE access to files larger than 2GB on
452 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
453 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
454 definitions for methods specializing on the passed class itself.
455 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
456 definitions for methods specializing on the passed class itself, or on
458 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
459 about itself during the build (e.g. for M-? in Slime), if this flag is
460 enabled in customize-target-features.lisp. This will increase the core
461 size by about 5-6mb, though, so it's mostly interesting to SBCL
463 * new feature: various GENCGC tuning parameters have been experimentally
464 documented and exported from SB-EXT. See documentation for details.
465 * fixes and improvements related to Unicode and external formats:
466 ** the Unicode character database has been upgraded to the
467 Unicode 5.2 standard, giving names and properties to a number of new
468 characters, and providing a few extra characters with case
470 ** improvement: restarts for providing replacement input/output on coding
471 errors for fd-stream external formats.
472 ** improvement: where :<encoding> is a keyword corresponding to an
473 external format the system supports, it is now possible to specify
474 (:<encoding> :replacement <character>) as an external format which will
475 automatically substitute <character> on encoding or decoding errors for
476 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
478 ** improvement: the file streams underlying the standard streams (such as
479 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
480 which uses the replacement mechanism to handle encoding errors,
481 preventing various infinite error chains and unrecoverable I/O
483 ** minor incompatible change: the utf-8 external format now correctly
484 refuses to encode Lisp characters in the surrogate range (char-codes
485 between #xd800 and #xdfff).
486 ** fix a typo preventing conversion of strings into octet vectors
487 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
489 ** fix a bug in the octet multibyte handling of decoding errors and the
490 USE-VALUE restart. (launchpad bug lp#314939)
491 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
492 restart on fd-stream decoding errors.
493 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
494 error is near the end of file.
495 ** fix a double-error case in unibyte octet conversions, when the first
496 use of USE-VALUE is ignored.
497 ** fix bugs in handling of undefined code points in unibyte encodings.
498 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
499 streams after an UNREAD-CHAR.
500 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
501 object is allocated in a boxed region of dynamic space.
502 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
503 fork with multiple Lisp threads running is made, instead of going
504 ahead with unpredictable consequences. (reported by Leslie Polzer)
505 * bug fix: uses of slot accessors on specialized method parameters within
506 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
507 error while finalizing the class. This fix may cause classes with slot
508 accessors to be finalized later than previously. (reported by Lars Rune
509 Nøstdal; launchpad bug lp#473699)
510 * bug fix: restore buildability on the MIPS platform. (regression from
511 1.0.30.38, reported by Samium Gromoff)
512 * bug fix: inspecting closures is less likely to fail with a type error.
513 * bug fix: no timer starvation when setting the system clock back.
514 (launchpad bug lp#460283)
515 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
516 standard pprint dispatch table as specified by CLHS.
517 * bug fix: give CLISP a hint about a type declaration to enable it to build
518 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
520 * bug fix: correctly dump literal objects in defaulting forms of arglists.
521 (reported by Attila Lendvai; launchpad bug lp#310132)
522 * bug fix: distinguish in type specifiers between arrays that might be
523 complex and arrays that are definitely complex. (launchpad bug lp#309129)
524 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
525 type. (reported by Levente Mészáros; launchpad bug lp#485972)
526 * bug fix: setting the value of a symbol-macro within a method in the
527 presence of type declarations works properly again. (reported by Iban
528 Hatchondo; launchpad bug lp#485019)
530 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
531 * optimization: faster FIND and POSITION on strings of unknown element type
532 in high SPEED policies. (thanks to Karol Swietlicki)
533 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
535 * improvement: better error signalling for bogus parameter specializer names
536 in DEFMETHOD forms (reported by Pluijzer)
537 * bug fix: DELETE-FILE once again works on logical pathnames (regression
539 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
541 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
542 removes previous default initargs (reported by Lars Rune Nøstdal and
544 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
545 lambda-lists. (reported by Peter Seibel)
546 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
547 correctly when starting from an executable core without saved runtime
548 options (reported by Faré Rideau, thanks to Zach Beane)
549 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
550 an optimization note instead. (reported by Martin Cracauer)
551 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
552 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
553 new process group if it doesn't need to share stdin with the sbcl
554 process. (thanks to Leslie Polzer)
555 * bug fix: SATISFIES could be misoptimized to refer to a local function.
556 (reported by Stanislaw Halik)
558 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
559 * improvement: stack allocation is should now be possible in all nested
560 inlining cases: failure to stack allocate when equivalent code is manually
561 open coded is now considered a bug.
562 * improvements related to Unicode:
563 ** the Unicode character database has been upgraded to the
564 Unicode 5.1 standard, giving names and properties to a number of new
565 characters, and providing a few extra characters with case
567 ** the system now recognizes and produces names for Unicode Hangul
569 ** the EBCDIC-US external-format is now supported for octet operations
570 (as well as for stream operations).
571 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
572 be used to output toplevel compile-time effects into a separate .CFASL
574 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
575 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
577 * optimization: TRUNCATE on known single- and double-floats is upto 25%
579 * optimization: division of floating point numbers by constants uses
580 multiplication by reciprocal when an exact reciprocal exists.
581 * optimization: multiplication of single- and double-floats floats by
582 constant two has been optimized.
583 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
584 sufficient type information is available. (thanks to Leslie Polzer)
585 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
586 known structure objects are as efficient as defstruct generated accessors.
587 * optimization: unused vector creation can now be optimized away.
588 * improvement: ASDF systems can now depends on SB-INTROSPECT.
589 * improvement: a STYLE-WARNING is signalled when a generic function
590 clobbers an earlier FTYPE proclamation.
591 * improvement: the compiler is able to track the effective type of
592 generic function across method addition and removal even in the
593 absence of an explicit DEFGENERIC.
594 * improvement: DESCRIBE now reports on symbols naming undefined
595 but assumed or declared function as well.
596 * improvement: recompilation of systems using SB-GROVEL now works
597 (thanks to Leslie Polzer)
598 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
599 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
601 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
602 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
603 well as user defined declaration names.
604 ** VARIABLE-INFORMATION is now aware of alien variables.
605 * improvement: improved address space layout on OpenBSD (thanks to Josh
607 * improvement: pretty-printing of various Lisp forms has been improved
608 (thanks to Tobias Rittweiler)
609 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
610 unused were deleted in safe code. (reported by John Fremlin)
611 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
613 * bug fix: some out-of-line array predicates were missing (reported by
615 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
617 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
618 (thanks to Larry D'Anna)
619 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
620 as well. (reported by Josh Elsasser)
621 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
622 leading to possible attempts to delete the same file twice. See docstring
623 on DELETE-FILE for details. (reported by John Fremlin)
624 * bug fix: DELETE-FILE once again deletes the file named by the pathname
625 designator argument, rather than its truename. (reported by Luis
627 * bug fix: the low-level debugger had 32-bit assumptions and was missing
628 information about some array types. (thanks to Luis Oliveira)
629 * bug fix: moderately complex combinations of inline expansions could
630 be miscompiled if the result was declared to be dynamic extent.
631 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
632 form (+ <variable> <integer>) were miscompiled under certain
634 * bug fix: in some cases no compiler note about failure to stack allocate
635 was emitted, even if the objects were in fact heap allocated.
636 * bug fix: minor violation of "otherwise inaccessible" rule for stack
637 allocation could cause objects users might reasonably expect to
638 be heap allocated to be stack allocated.
639 * bug fix: DESCRIBE signalled an error for generic functions under
640 certain circumstances. (thanks to Leslie Polzer)
641 * bug fix: Fixed spelling of an error message.
643 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
644 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
645 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
646 of SB-THREAD:THREAD-ERROR-THREAD.
647 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
648 * new feature: docstrings for local and anonymous functions are no longer
649 discarded. (thanks to Leslie Polzer)
650 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
651 values in other threads.
652 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
653 about object allocation.
654 * optimization: division of a real float by a complex float is implemented
655 with a specialised code sequence.
656 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
657 keywords is an order of magnitude faster.
658 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
659 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
660 methods, and similarly for non-standard metaclass classes as long as there
661 are no methods additional on MAKE-INSTANCE.
662 * optimization: more efficient type-checks for FIXNUMs when the value
663 is known to be a signed word on x86 and x86-64.
664 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
665 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
667 * optimization: compiler is smarter about delegating argument type checks to
669 * optimization: several character functions are now compiled somewhat more
670 efficiently. (reported by Lynn Quam)
671 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
672 * improvement: less unsafe constant folding in floating point arithmetic,
673 especially for mixed complex/real -float operations.
674 * optimization: constant double and single floats are stored in native
675 unboxed format on x86[-64].
676 * optimization: smarter code for arithmetic operations with constant floats,
677 complex floats, or integers on x86[-64].
678 * optimization: smarter code for conjugate/multiplication of float complexes
679 and abs/negate of floats on x86-64.
680 * optimization: more efficient complex float and real float operations on
682 * improvement: complex float division is slightly more stable.
683 * improvement: DESCRIBE output has been reworked to be easier to read and
684 contains more pertinent information.
685 * improvement: failure to provide requested stack allocation compiler notes
686 provided in all cases (requested stack allocation not happening without a
687 note being issued is now considered a bug.)
688 * bug fix: SB-POSIX exports the documented types and functions
689 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
690 types. (reported by "abhi")
691 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
692 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
693 (thanks to Paul Khuong)
694 * bug fix: looping around HANDLER-CASE could silently consume stack space
695 on each iteration. (reported by "foobar")
696 * bug fix: better error signalling when calls to functions seeking elements
697 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
698 (reported by Tobias Rittweiler)
699 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
700 directory components now works as it used to. (various prolems reported by
701 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
702 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
703 (reported by Elliot Slaughter, thanks to Stas Boukarev)
704 * bug fix: bogus undefined variable warnings from fopcompiled references to
705 global variables. (thanks to Lars Rune Nøstdal)
706 * bug fix: foreign function names should now appear in backtraces on
707 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
708 * bug fix: SETF compiler macro documentation strings are not discarded
710 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
711 (thanks to Alex Plotnick)
712 * bug fix: SLEEP accepts large integer arguments, truncating them to
713 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
714 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
715 * bug fix: compiler notes for expensive slot type checks could be emitted
716 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
718 changes in sbcl-1.0.29 relative to 1.0.28:
719 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
720 https://bugs.launchpad.net/sbcl
721 Bugs can be reported directly there, or by sending email to
722 sbcl-bugs@lists.sourceforge.net
723 (no subscription required.)
724 * minor incompatible change: under weak type checking policy integer
725 types are weakened less aggressively.
726 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
727 allowed to return, which causes SBCL to quit with exit status 0. Previously
728 if the function returned with a small integer return value, that value
729 was accidentally reused as the exit status.
730 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
731 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
732 :HASH-FUNCTION argument. Refer to user manual for details.
733 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
735 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
736 microseconds since the Unix epoch on all platforms.
737 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
738 allows the compiler to safely elide boundedness checks for special
740 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
741 the symbol, prohibits both lexical and dynamic binding. This is mainly an
742 efficiency measure for threaded platforms, but also valueable in
744 * new feature: UNC pathnames are now understood by the system on Windows.
745 * optimization: the compiler uses a specialized version of FILL when the
746 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
748 * optimization: accesses to potentially non-simple arrays where element type
749 is known are 50% faster.
750 * optimization: compiler now generates faster array typechecking code.
751 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
753 * optimization: multidimensional array accesses in the absence of type
754 information regarding array rank are approximately 10% faster due to
755 open coding of ARRAY-RANK.
756 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
757 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
759 * optimization: result of call to VECTOR can now be stack allocated.
760 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
761 as long as the resulting array is one-dimensional and has a known
762 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
763 length of the list matches the known length of the vector does not
764 allocate the list as an intermediate step. Ditto for VECTOR and simple
766 * optimization: MAKE-ARRAY can now stack allocate in the presence of
767 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
768 known element type, and is known to be simple and one dimensional.
769 * improvement: SBCL now emits a compiler note where stack allocation was
770 requested but could not be provided (not in all cases, unfortunately)
771 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
772 * improvement: pretty-printing loop has been implemented properly. (thanks
773 to Tobias Rittweiler)
774 * documentation: CLOS slot typechecing policy has been documented.
775 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
776 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
777 pointer, leading to memory faults. (thanks to Bart Botta)
778 * bug fix: better floating point exception handling on x86/OpenBSD.
779 (thanks to Josh Elsasser)
780 * bug fix: exit status from QUIT when called under --script was lost
781 (reported by Hubert Kauker)
782 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
783 same implementation of FILL to initialize the array, even if a more
784 efficient one was available (reported by Stas Boukarev, thanks to
786 * bug fix: potential miscompilation of array stack allocation on x86 and
787 x86-64. (reported by Time Tossavainen)
788 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
789 result in their subforms being treated as top level forms. (reported by
791 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
792 than a machine register could leave garbage in the high bits of the
793 result register (bug 316325).
794 * bug fix: disable address space randomization Linux/x86-64 as well,
795 not just x86-64. (reported by Ken Olum)
796 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
797 generate incorrect code.
798 * bug fix: #201; type inference for CONS and ARRAY types could derive
799 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
800 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
801 could not be assigned to or bound with PROGV. (reported by Lorenz
803 * bug fix: the value of CL:- in the inspector was the previous expression
804 evaluated rather than the expression being evaluated.
805 * bug fix: constants can no longer be locally declared special.
806 * bug fix: signals delivered to threads started from foreign land (read:
807 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
808 thread by blocking all signals and resignalling.
809 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
810 from :INITFORM, if any.
812 changes in sbcl-1.0.28 relative to 1.0.27:
813 * a number of bugs in cross-compilation have been fixed, with the ultimate
814 result that building under (at least) clisp should be much more reliable.
815 * minor incompatible changes: echo-streams now propagate unread-char to the
816 underlying input stream, and no longer permit unreading more than one
818 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
819 frames, allowing for instance more reliable backtraces.
820 * improvement: the debugger REPL can now reference lexical variables
821 by name directly for code compiled with (DEBUG 3).
822 * improvement: errors from malformed declarations now have better source
823 paths associated with them. (thanks to Tobias Rittweiler)
824 * optimization: faster local calls on x86/x86-64
825 * bug fix: some error messages for out-of-bound array indexes confused the
826 index and the bound. (thanks to Stas Boukarev)
827 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
829 * bug fix: running regressions tests in shells without OSTYPE set now works.
830 (reported by Harald Hanche-Olsen)
831 * bug fix: more robust static space exhaustion signalling from
832 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
833 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
834 docstring away instead of storing it under names such as (LAMBDA (X)).
835 (reported by Leslie Polzer)
836 * bug fix: timers could go off in the wrong order, be delayed indefinitely
837 (thanks to Ole Arndt for the patch)
838 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
839 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
840 potentially-invalid effective methods in its cache.
841 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
842 instances as well (thanks to Paul Khuong)
843 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
844 SB-POSIX:WAITPID and their C equivalents.
845 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
847 changes in sbcl-1.0.27 relative to 1.0.26:
848 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
849 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
850 * improvement: the system either recovers from stack exhaustion or dies
851 properly as opposed to leaving the user uncertain of whether the handler
852 trampled on some random memory next to the stack or having to rely on
853 --lose-on-corruption (which is still a good idea to use in production
854 because stack exhaustion can happen in signal handlers which will likely
856 * bug fix: fix gc related interrupt handling bug on ppc (regression from
857 1.0.25.37, reported by Harald Hanche-Olsen)
858 * bug fix: work around signal delivery bug in darwin (regression from
859 1.0.25.44, reported by Sidney Markowitz)
860 * bug fix: fix ERROR leaking memory (reported by David Thompson)
862 changes in sbcl-1.0.26 relative to 1.0.25:
863 * incompatible change: an interruption (be it a function passed to
864 INTERRUPT-THREAD or a timer function) runs in an environment where
865 interrupts can be enabled. The interruption can use
866 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
867 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
868 potentially running out of stack. Keep in mind that in the absence
869 of WITHOUT-INTERRUPTS some potentially blocking operation such as
870 acquiring a lock can enable interrupts.
871 * incompatible change: GC-OFF and GC-ON are removed, as they were
872 always unsafe. Use WITHOUT-GCING instead.
873 * new feature: runtime option --disable-ldb
874 * new feature: runtime option --lose-on-corruption to die at the
875 slightest hint of possibly non-recoverable errors: running out of
876 memory, stack, alien stack, binding stack, encountering a memory
877 fault, etc. In the absence of --lose-on-corruption a warning is
879 * enhancement: detect binding stack exhaustion
880 * enhancement: detect alien stack exhaustion on x86/x86-64
881 * improvement: generally more stable and reliable interrupt handling
882 * improvement: there is a per thread interruption queue,
883 interruptions are executed in order of arrival
884 * improvement: a repeating timer reschedules itself when the it has
885 finished, but expiration times are spaced equally. If an
886 expiration time is in the past it will trigger after a short grace
887 period that may give a chance to other things to run.
888 * optimization: slightly faster gc on multithreaded builds
889 * optimization: faster WITHOUT-GCING
890 * bug fix: when JOIN-THREAD signals an error, do it when not holding
891 important locks so that the debugger/handler doesn't produce
892 recursive errors or deadlock.
893 * bug fix: real-time signals are not used anymore, so no more
894 hanging when the system wide real-time signal queue gets full.
895 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
897 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
898 * bug fix: fix random memory faults related to interrupts on alpha
899 * bug fix: fix random memory faults related to interrupts on sparc
900 * bug fix: fix deadlocks related to starting threads
901 * bug fix: fix deadlines on locks on futex platforms
902 * bug fix: restore errno in signal handlers
903 * bug fix: fix deadlocks related to hash tables
904 * bug fix: fix deadlocks in pcl
906 changes in sbcl-1.0.25 relative to 1.0.24:
907 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
908 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
909 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
910 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
911 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
912 better name and does not return values so stale on multiprocessor systems.
913 Also, HOLDING-MUTEX-P was added for about the only sane usage of
915 * improvement: unithread builds keep track of MUTEX-VALUE.
916 * improvement: reading from a TWO-WAY-STREAM does not touch the output
917 stream anymore making it thread safe to have a concurrent reader and
918 a writer, for instance, in a pipe.
919 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
920 arguments, making compiler-macros for SETF-functions able to inspect
921 their constant arguments.
922 * improvement: COMPILE-FILE reports times with millisecond accuracy
923 (thanks to Luis Oliveira)
924 * optimization: CHAR-CODE type derivation has been improved, making
925 TYPEP elimination on subtypes of CHARACTER work better. (reported
926 by Tobias Rittweiler, patch by Paul Khuong)
927 * bug fix: setting alien structure fields of type struct by value now
928 computes the right offset for the memory copy.
929 * bug fix: compilation problem involving inlined calls to aliens with
930 result type VOID. (reported by Ken Olum)
931 * bug fix: #235a; sequential inline expasion in different policies no
932 longer reuses the functional from the previous expansion site.
933 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
934 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
935 * bug fix: named ENUMs in multiply-referenced alien record types no longer
936 cause an implied type redefinition. Regression from 1.0.21.29.
937 * bug fix: sign-extension of small signed return values now works with C
938 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
939 * improvements to the Windows port:
940 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
941 Westfold, thanks to Rudi Schlatte)
943 changes in sbcl-1.0.24 relative to 1.0.23:
944 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
945 vector of a multidimensional SIMPLE-ARRAY.
946 * new feature: the system now signals a continuable error if standard
947 readtable modification is attempted. (thanks to Tobias Rittweiler)
948 * new feature: DIRECTORY has been extended with a non-standard keyword
949 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
950 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
951 has been robustified and documented better. (thanks to Robert Goldman)
952 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
953 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
954 * tradeoff: constant FORMAT control strings are now compiled unless
955 SPACE > SPEED (previously only when SPEED > SPACE.)
956 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
958 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
960 * bug fix: lexical type declarations are now correctly reported by
961 SB-CLTL2. (reported by Larry D'Anna)
962 * bug fix: STRING-TO-OCTETS did not handle :START properly when
963 using UTF-8 as external format. (thanks to Luis Oliveira)
964 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
965 are signalled correctly. (thanks to Stas Boukarev)
966 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
967 designator. (thanks to Tobias Rittweiler)
968 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
969 designator, and returns T instead of the function. (thanks to
971 * bug fix: direct superclasses of STANDARD-CLASS and
972 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
973 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
974 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
975 when no class with the named slot yet exists no longer causes a
976 compile-time style-warning.
977 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
978 in safe code. (reported by Didier Verna)
979 * bug fix: #430; nested structure constructors can stack allocate.
980 * bug fix: on some 64-bit platforms dynamic space size was truncated
981 to #xffff0000 bytes. (reported by Benjamin Lambert)
982 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
983 REPL unusable. (reported by Daniel Herring)
984 * bug fix: return values of READ-SEQUENCE did not take :START into
985 account on file streams, regressions since 1.0.12.22. (reported by
986 Thomas Russ, patch by Paul Khuong)
987 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
988 method specializer used to confuse permuation vector optimization.
989 * bug fix: system inserted bogus implicit type declarations for local
990 special variables in DEFMETHOD bodies.
991 * bug fix: #354; duplicated frames in backtraces due to
992 non-tail-call-optimized XEPs to functions with return type NIL
994 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
995 initializes structure object slots according to DEFSTRUCT initforms,
996 and DEFSTRUCT forms :INCLUDEind structure classes defined using
997 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
998 (reported by Bruno Haible and Stephen Wilson)
999 * bug fix: #395; fill-pointer output streams used now support
1000 element-type BASE-CHAR as well.
1001 * bug fix: compiler error when attempting to derive return value of
1002 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1004 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1006 * bug fix: Mac OS X binaries should now be portable between Leopard
1009 changes in sbcl-1.0.23 relative to 1.0.22:
1010 * enhancement: when disassembling method functions, disassembly
1011 for the associated fast function is also produced.
1012 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1014 * optimization: printing with *PRINT-PRETTY* true is now more
1015 efficient as long as the object being printed doesn't require
1016 special handling by the pretty printer.
1017 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1018 now interact correctly with type declarations.
1019 * partial bug fix: PCL detects infinite recursion during wrapper
1020 validation. (thanks to Attila Lendvai)
1021 * bug fix: #426; nested function calls are inlined properly.
1022 Previously if FOO was an inline function, in calls of the form
1023 (FOO (FOO ...)) the outer call was not inlined.
1024 * bug fix: long long arguments passed in registers to alien
1025 functions on PowerPC Linux and NetBSD are now handled correctly
1026 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1028 changes in sbcl-1.0.22 relative to 1.0.21:
1029 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1030 for the shared object in the current directory, but passes the native
1031 namestring of the designated pathname to the operation system's shared
1032 object loading function as-it.
1033 * minor incompatible change: --disable-debugger toplevel option now takes
1034 effect before processing of initialization files and --eval or --load
1036 * new feature: new commandline argument: --script, which supports
1037 shebang lines. See documentation for details. (based on work by
1039 * new feature: SAVE-LISP-AND-DIE can save current values of
1040 --dynamic-space-size and --control-stack-size in the executable core,
1041 causing it to skip normal runtime option processing. See documentation
1042 for details. (thanks to Zach Beane)
1043 * enhancement: inoccous calls to EVAL or generic functions dispatching
1044 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1045 * enhancement: the system no longer resignals errors from --load and
1046 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1047 associated with the original error to be lost. (thanks to Ariel
1049 * enhancement: :DONT-SAVE keyword argument has been added to
1050 LOAD-SHARED-OBJECT for controlling interaction with
1051 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1052 the effects of an earlier LOAD-SHARED-OBJECT call.
1053 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1054 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1055 provided. (reported by Cedric St-Jean)
1056 * bug fix: circularity handling in the reader did not treat raw
1057 structure slots correctly. (reported by Cedric St-Jean)
1058 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1059 file descriptors when there were none.
1060 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1061 was broken. (reporteed by Willem Broekema)
1062 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1063 pathnames without a directory.
1064 * bug fix: COMPILE-FILE did not warn about undefined variable
1065 references at toplevel, and LOAD of the resulting fasl did
1066 not signal an error.
1067 * bug fix: functions with non-required arguments used to end up with
1068 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1069 * bug fix: redefining a function with non-required arguments didn't
1070 update the system's knowledge about its call signature properly.
1071 * bug fix: fixed #431; incompatible alien record type redefinitions
1072 are detected and handled. (reported by Neil Haven)
1073 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1074 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1076 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1077 after alien stack frames.
1078 * bug fix: strings passed to mk{s,d}temp lacked null termination
1080 changes in sbcl-1.0.21 relative to 1.0.20:
1081 * new feature: the compiler is able to track the effective type of a
1082 generic function across method addition and removal.
1083 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1084 appropriately typed structure slots without locking.
1085 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1086 information like those gathered by TIME using a programming-friendly
1088 * new feature: TIME reports time taken even if the form performs a
1089 non-local transfer of control.
1090 * enhancement: reduced conservativism on GENCGC platforms: on
1091 average 45% less pages pinned (measured from SBCL self build).
1092 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1093 mutate constant symbols or violate declaimed type of the symbol.
1094 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1095 sleeping on the semaphore in heavily contested semaphores.
1096 * bug fix: semaphores and condition variables were not interrupt
1098 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1099 owned by other threads anymore.
1100 * bug fix: FIND on lists called KEY outside the specified
1101 subsequence. (reported by budden)
1102 * bug fix: LOG doesn't use single-float intermediate results when
1103 given mixed integer and double-float arguments, leading to better
1104 precision. (reported by Bob Felts)
1105 * bug fix: LOG with base zero returned values of inconsistent type.
1107 changes in sbcl-1.0.20 relative to 1.0.19:
1108 * minor incompatible change: OPTIMIZE qualities
1109 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1110 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1111 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1112 * documentation: some slot access efficiency guidelines have been
1113 added to the user manual.
1114 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1115 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1116 as ASSOC and MEMEBER.
1117 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1118 to more efficient EQ-comparison versions more often.
1119 * optimization: enhanced derivation of DOLIST iteration variable type
1121 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1123 * optimization: runtime lookup of function definitions can be
1124 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1125 * optimization: compiler is able to derive the return type of
1126 (AREF (THE STRING X) Y) as being CHARACTER.
1127 * optimization: CLRHASH on empty hash-tables no longer does pointless
1128 work. (thanks to Alec Berryman)
1129 * optimization: REPLACE deftransforms don't punt when :START1 or
1131 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1132 no longer emits a code deletion note. (reported by Andrew
1134 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1135 functions with an odd number of &OPTIONAL arguments, a &REST
1136 argument, and one or more &KEY arguments at the call site.
1137 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1138 arguments appeared at call sites as well.
1139 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1140 READ-LINE &co can no longer read from them afterwards. (reported
1142 * bug fix: fixed #427: unused local aliens no longer cause compiler
1143 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1145 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1146 alien-stack leakage. (reported by Andy Hefner)
1147 * bug fix: PROGV signals an error when an attempt to violate declared
1148 type of a variable or bind a constant is made.
1149 * bug fix: SET signals an error when an attempt to violate declared
1150 type of a variable is made.
1151 * bug fix: restart computation during the execution of a restart
1152 test function no longer causes infinite recursion. (reported by
1154 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1155 signals an error. (thanks to Pierre Mai)
1156 * bug fix: EXPORT left symbol unexported in conflict situations.
1157 (thanks to Michael Weber)
1158 * bug fix: correctly handle name conflicts involving CL:NIL.
1159 (thanks to Michael Weber)
1160 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1161 conflicts arising from USEing package with conflicting symbols
1162 correctly. (thanks to Michael Weber)
1164 changes in sbcl-1.0.19 relative to 1.0.18:
1165 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1166 warnings that go otherwise unhandled will be muffled if they are
1167 of the type that's the value of this variable.
1168 * optimization: stack allocation is slightly more efficient on x86
1170 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1171 where a raw slot always is initialized using the initform whose
1172 type is not know sufficiently well a compile-time are now compiled
1173 correctly. (reported by John Morrison)
1174 * bug fix: compiler no longer makes erronous assumptions in the
1175 presence of non-foldable SATISFIES types.
1176 * bug fix: stack analysis missed cleanups of dynamic-extent
1177 arguments in non-let-converted calls to local functions.
1178 * improvements to the Windows port:
1179 ** adjusted address spaces for building on both Win32 and
1180 Win64. (thanks for John Connors)
1181 * fixed some bugs revealed by Paul Dietz' test suite:
1182 ** interval arithmetic during type derivation used inexact integer
1183 to single-float coercions.
1184 ** arithmetic operations involving large integers and single
1185 floats give the same results in compiled and interpreted code.
1186 ** deriving the result type of COERCE no longer signals an error
1187 if the derived type of the second argument is a MEMBER type
1188 containing invalid type specifiers.
1189 ** ADJOIN with constant NIL as second argument works correctly.
1190 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1192 changes in sbcl-1.0.18 relative to 1.0.17:
1193 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1194 profiles only the current thread.
1195 * minor incompatible change: changes to SYMBOL-VALUE of constants
1196 defined with DEFCONSTANT now signal an error.
1197 * enhancement: SB-SPROF now has support for wallclock profiling,
1198 and is also able to profile specific threads. REPORT output
1199 has also additional sorting options.
1200 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1202 * optimization: structure allocation has been improved
1203 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1204 ** out of line constructors are ~10% faster.
1205 ** inline constructors are ~15% faster.
1206 ** inline constructors are capable of dynamic extent allocation
1207 (generally on x86 and x86-64, in some cases on other platforms
1209 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1211 * optimization: file compiler is now able to coalesce non-circular
1212 lists, non-base strings, and bit-vectors. Additionally, constants
1213 are never referenced through SYMBOL-VALUE at runtime.
1214 * optimization: code defining methods on PRINT-OBJECT (and other
1215 generic functions in the COMMON-LISP package) now loads faster.
1216 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1218 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1219 fasl is now deleted. (reported by Attila Lendvai)
1220 * bug fix: READ-LINE always returned NIL for the last line in files.
1221 (reported by Yoshinori Tahara)
1222 * bug fix: more accurate disassembly annotations of foreign function
1223 calls. (thanks to Andy Hefner)
1224 * bug fix: trimming non-simple strings and non-string string
1225 designators when the there is nothing to trim works properly.
1226 (thanks to James Knight)
1227 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1228 (thanks to Travis Cross)
1229 * fixed some bugs revealed by Paul Dietz' test suite:
1230 ** NIL is a valid function name (regression at 1.0.13.38)
1231 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1232 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1233 fill pointers properly (regression at 1.0.12.23)
1234 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1235 displacement indices properly (regression at 1.0.12.23)
1237 changes in sbcl-1.0.17 relative to 1.0.16:
1238 * temporary regression: user code can no longer allocate closure
1239 variable storage on stack, due to bug 419 without explicitly
1240 requesting it. Please consult sbcl-devel for advice if you need to
1241 use this feature in the meanwhile.
1242 * new feature: runtime argument --control-stack-size can be used to
1243 adjust thread default control stack size.
1244 * enhancement: improved TIME output
1245 ** all times are reported using the measured accuracy (milliseconds
1246 for real and GC times, microseconds for everything else.)
1247 ** processor cycle counts on x86 and x86-64.
1248 ** interpreted forms are counted for both evaluator modes.
1249 ** number of lambdas converted by the compiler is reported.
1250 ** CPU percentage report (computed from real and total run time.)
1251 ** more comprehensive run time reporting, using a condenced format
1252 ** interperted form, lambda, and page fault counts are omitted
1254 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1256 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1257 * optimization: two argument forms of LAST are upto ~10% faster
1258 in normal SPEED policies.
1259 * optimization: NCONC no longer needs to heap cons its &REST list
1260 in normal SPEED policies.
1261 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1262 to Sidney Markowitz)
1263 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1264 regression since 1.0.9.1. (thanks to Eric Marsden)
1265 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1266 since 1.0.15.36. (thanks to Paul Khuong)
1267 * bug fix: LAST when always returned the whole list when given a bignum
1268 as the second argument.
1269 * bug fix: dynamic extent allocation of nested lists and vectors
1270 could leak to otherwise accessible parts.
1271 * bug fix: invalid optimization of heap-allocated alien variable
1273 * bug fix: fasl header checking is less vulnerable to different
1274 platform word lengths.
1275 * bug fix: more correct assembler syntax for GNU binutils
1276 2.18.50.0.4 support. (thanks to Marijn Schouten)
1277 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1279 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1280 declarations) successfully. (reported by Attila Lendvai)
1282 changes in sbcl-1.0.16 relative to 1.0.15:
1283 * minor incompatible change: revert the changes to sb-posix's error
1284 signaling added in 1.0.14.
1285 * minor incompatible change: change PROBE-FILE back to returning
1286 NIL whenever we can't get a truename, as was the case before 1.0.14.
1287 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1288 inherits from ERROR instead of just CONDITION.
1289 * new feature: SB-INTROSPECT can provide source locations for instances
1290 as well. (thanks to Tobias Rittweiler)
1291 * optimization: binding special variables now generates smaller code
1292 on threaded platforms.
1293 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1294 and cases where no :TEST is given but the compiler can infer that
1295 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1296 * optimization: better LOGNOT on fixnums.
1297 * optimization: modular arithmetic for a particular requested width
1298 is implemented using a tagged representation unless a better
1299 representation is available.
1300 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1301 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1302 for wellformedness and returns a specialized vector. (reported by
1303 Francois-Rene Rideau)
1304 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1305 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1306 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1307 unscheduling timer at the same time as another timer fires.
1308 * bug fix: don't reschedule timers for dead threads.
1309 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1310 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1311 bogus errors if select() was interrupted.
1312 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1314 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1315 * enhancement: cleaner backtraces for interactive interrupts, as
1316 well as other cases where the interesting frames used to be
1317 obscured by interrupt handling frames.
1318 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1319 now supported, and tracing a whole package using (TRACE "FOO") now
1320 traces SETF-functions as well.
1321 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1322 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1323 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1324 * unreadably printed representation of hash-tables now includes
1326 * bug fix: partially fixed #188: type propagation from assignments
1327 is now more efficient.
1328 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1329 'DOUBLE-FLOAT) are not flushable.
1330 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1331 full address of the object, and none of the tag bits.
1332 * bug fix: readably printing hash-tables now respects other printer
1333 control variables. (reported by Cedric St-Jean)
1334 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1335 keyword with MAKE-HASH-TABLE.
1336 * bug fix: export SB-POSIX:MKSTEMP.
1337 * bug fix: SORT was not interrupt safe.
1338 * bug fix: XREF accounts for the last node of each basic-block as
1340 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1341 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1342 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1343 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1344 create obsolete instances in the case of redefinition or
1345 obsoletion of a superclass. (thanks to Andy Hefner)
1346 * bug fix: Support for the Alpha architecture has been revived; it had
1347 suffered somewhat from lack of maintenance since sbcl-1.0.
1348 * improvements to the Windows port:
1349 ** The system detects the codepage to use at startup, instead of
1350 using the value from the saved core. (thanks to Kei Suzuki)
1352 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1353 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1354 (see documentation for details.)
1355 * revived support for OpenBSD (contributed by Josh Elsasser)
1356 * partially fixed bug #108: ROOM no longer suffers from occasional
1357 (AVER (SAP= CURRENT END)) failures.
1358 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1359 bodies no longer cause a WARNING to be signalled. (reported by
1361 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1362 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1363 the bug in TRUNCATE.) (reported by Michael Weber)
1364 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1365 no samples. (reported by Andy Hefner)
1366 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1367 no longer appear as (NIL ...) frames in backtraces.
1368 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1369 is now actually exported from SB-EXT as documented. (reported by
1371 * bug fix: sb-aclrepl now correctly understands how to inspect
1372 single-floats on 64-bit platforms where single-floats are not boxed.
1373 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1374 yet been finalized. (reported by Levente Meszaros)
1375 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1376 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1377 SBCL-specific optimize qualities.
1379 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1380 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1381 an executable in the search path, and does so in the child
1382 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1383 been removed; it can be found in the CVS history, for somebody who
1384 needs that search behavior (see the manual).
1385 * minor incompatible change: compiler policy re. weakening type
1386 checks has changed: now type checks are weakened only if SAFETY < 2
1388 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1389 unparsing of directory pathnames as files. Analogously,
1390 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1391 filename to parse into a directory pathname.
1392 * enhancement: implicit generic function creation now signals a
1393 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1394 users can bind handlers for and muffle around calls to LOAD.
1395 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1396 to be used (using the default stream external format), and allows
1397 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1398 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1399 strings and vectors whose element-type or simplicity is not fully
1400 known at compile-time.
1401 * optimization: STRING-TRIM and related functions no longer allocate
1402 a new string when no trimming needs to be performed. These functions
1403 are also faster than before when the input string has been declared
1405 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1406 * optimization: READ-LINE is significantly faster for files containing
1408 * optimization: non-open coded uses of character comparison operators
1409 (e.g. char=) no longer cons when called with more than one parameter
1410 on platforms supporting dynamic-extent allocation.
1411 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1412 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1413 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1415 * bug fix: some sequence functions elided bounds checking when
1417 * bug fix: too liberal weakening of union-type checks when SPEED >
1419 * bug fix: more bogus fixnum declarations in ROOM implementation
1422 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1423 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1424 :SYNCHRONIZED argument, which makes the hash-table safe for
1425 concurrent accesses (but not iteration.) See also:
1426 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1427 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1428 * optimization: CONCATENATE on strings is an order of magnitude faster
1429 in code compiled with (> SPEED SPACE).
1430 * optimization: SUBSEQ is ~50% faster on lists.
1431 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1432 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1433 END is smaller then START.
1434 * bug fix: SB-PROFILE will no longer report extra consing for nested
1435 calls to profiled functions.
1436 * bug fix: ROOM implementation had bogus fixnum declarations which
1437 could cause type-errors when calling ROOM on large images.
1438 * bug fix: if file compilation is aborted, the partial fasl is now
1439 deleted, and COMPILE-FILE returns NIL as the primary value.
1440 * bug fix: number of thread safety issues relating to SBCL's internal
1441 hash-table usage have been fixed.
1442 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1443 be returned from its body when the values were being returned
1444 using unknown-values return convection and the W-P-O was wrapped
1445 inside an UNWIND-PROTECT.
1446 * bug fix: sb-posix should now compile again under Windows, enabling
1447 slime to work again.
1449 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1450 * incompatible change: hash-table accessor functions are no longer
1451 automatically protected by locks. Concurrent accesses on the same hash-table
1452 from multiple threads can give inconsistent results or even corrupt the
1453 hash-table completely. Multi-threaded applications should do their own
1454 locking at the correct granularity. In the current implementation it is
1455 still safe to have multiple readers access the same table, but it's not
1456 guaranteed that this property will be maintained in future releases.
1457 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1458 and will signal an error at runtime.
1459 * enhancement: SB-THREAD package now exports a semaphore interface.
1460 * enhancement: CONS can now stack-allocate on x86 and
1461 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1463 * enhancement: nested lists can now be stack allocated on
1464 platforms providing stack allocation support.
1465 * enhancement: dynamic-extent support has been extended to support
1466 cases where there are multiple possible sources for the stack
1468 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1469 if the mutex is uncontested on Linux.
1470 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1471 as specified by the CLHS. (thanks to Tobias Rittweiler)
1472 * bug fix: NaN comparison now works on x86-64.
1473 * bug fix: CLOSE :ABORT T on a stream with pending output now
1475 * bug fix: instances of non-standard metaclasses using standard
1476 instance structure protocol sometimes missed the slot type checks
1478 * bug fix: known functions can be inlined in high-debug code.
1480 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1481 * minor incompatible change: the MSI installer on Windows no longer
1482 associates .lisp and .fasl files with the installed SBCL.
1483 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1484 on Windows. (thanks to Luis Oliviera)
1485 * new feature: SB-CLTL2 contrib module now implements
1486 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1487 * optimization: scavenging weak pointers is now more efficient,
1488 requiring O(1) instead of O(N) per weak pointer to identify
1489 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1490 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1491 method bodies using constant slot-names when the first argument is
1492 a specializer parameter for the method.
1493 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1494 names, when the class of the instance is a direct instance
1495 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1496 as slow as the constant slot-name case.)
1497 * optimization: member type construction is now O(N) instead
1499 * optimization: UNION and NUNION are now O(N+M) for large
1500 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1502 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1503 now more readable in environments like Slime which display it.
1504 (thanks to Tobias C. Rittweiler)
1505 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1506 was able to infer the correct argument type for the object on which
1507 the CAS operation was being performed.
1508 * bug fix: copy propagation interfered with parallel assignment
1509 semantics in local calls. (reported by Paul Khuong)
1510 * bug fix: the signed modular fixnum shift compiled to wrong code on
1511 x86 and x86-64. (spotted by a slight modification to some of
1514 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1515 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1516 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1517 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1519 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1520 and generic function now print the object identity for anonymous
1521 instances. (thanks to Attila Lendvai)
1522 * enhancement: as an extension to MOP, SBCL now supports SETF of
1523 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1524 (thanks to Attila Lendvai)
1525 * enhancement: sb-cover has an alternate annotation mode which puts
1526 the form annotations at the car of the form, instead of annotating
1527 it completely. The benefit of this mode is that it shows better
1528 which forms were instrumented by the compiler.
1529 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1530 by printer control variables. (reported by Dan Corkill)
1531 * bug fix: system leaked memory when delayed output was performed by
1532 the OS in smaller chunks then expected. (thanks to David Smith)
1533 * bug fix: system leaked memory when file streams were not closed
1535 * bug fix: large objects written to slow streams that were modified
1536 after the write could end up with the modified state written to
1537 the underlying file descriptor.
1538 * bug fix: multiple threads operating in parallel on the same stream
1539 could cause buffer-overflows.
1540 * bug fix: source location information is stored correctly
1541 (broken since 1.0.6). This bug would generally show up as the
1542 Slime debugger highlighting the wrong form when the sldb-show-source
1544 * bug fix: Branch forms are again annotated as branches in the sb-cover
1546 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1547 on x86-64. (reported by Gregory Vanuxem)
1548 * bug fix: EQUALP could return wrong results for structures with raw
1549 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1550 word). (reported by Vjacheslav Fyodorov)
1551 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1554 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1555 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1556 atomic compare-and-swap operations on threaded platforms.
1557 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1558 allows assigning a global minimum value to optimization qualities
1559 (overriding proclamations and declarations).
1560 * enhancement: closed over variables can be stack-allocated on x86
1562 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1564 * optimization: slot definition lookup is now O(1). This speeds up
1565 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1566 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1567 * optimization: ASSOC and MEMBER can now be open-coded for all
1568 combinations of keyword arguments when second argument is constant
1569 and SPEED >= SPACE. In other cases a specialized version is
1571 * bug fix: using obsoleted structure instances with TYPEP and
1572 generic functions now signals a sensible error.
1573 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1574 (reported by Kristoffer Kvello)
1575 * bug fix: backtrace construction is now more careful when making
1576 lisp-objects from pointers on the stack, to avoid creating bogus
1577 objects that can be seen by the GC.
1578 * bug fix: defaulting of values in contexts expecting more than 7
1579 variables now works on x86-64. (reported by Christopher Laux)
1580 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1582 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1583 as the property-list of a symbol.
1584 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1585 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1586 situations requested, are once again file-compileable. (reported
1589 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1590 * MOP improvement: support for user-defined subclasses of
1591 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1592 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1593 the expansion of DEFMETHOD, is responsible for generating a form
1594 which creates a list of specializers when evaluated. Additional
1595 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1596 debugging and introspective support.
1597 * minor incompatible change: the (unsupported) spinlock interface
1598 has changed: free spinlock now has the value NIL, and a held spinlock
1599 has the owning thread as its value.
1600 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1601 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1603 * enhancement: name of a socket-stream is now "a socket" instead of
1604 "a constant string".
1605 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1606 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1607 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1608 for generic functions. (Thanks to Tobias C. Rittweiler)
1609 * optimization: bignum printing speed has been improved by 20-40%
1610 (depending on the bignum size.)
1611 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1613 * bug fix: the cache used by the CLOS to store precomputed effective
1614 methods, slot offsets, and constant return values is now thread and
1616 * bug fix: generic function dispatch function updating is now thread
1617 and interrupt safe (in the sense that the known issues have been
1619 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1620 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1621 * bug fix: asdf systems with dependencies to the SB-POSIX or
1622 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1623 * bug fix: interrupt safety of applicable method computation has been
1626 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1627 * new contrib: sb-cover, an experimental code coverage tool, is included
1628 as a contrib module.
1629 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1630 significantly faster.
1631 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1632 produce more efficient code on x86-64 if the compiler can determine
1633 that (+ INDEX <constant>) does not require a bounds check and FOO
1634 has an element type at least 8 bits wide.
1635 * enhancement: a new, experimental synchronous timeout facility is
1636 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1637 * enhancement: when a symbol name conflict error arises, the
1638 conflicting symbols are always printed with a package prefix.
1639 (thanks to Kevin Reid)
1640 * enhancement: stepping is now once again supported on the SPARC and
1641 MIPS platforms. (It is also now more likely to work on CheneyGC
1643 * enhancement: sb-sprof can now also track and report accurate call
1645 * bug fixes: the treatment of non-standard subclasses of
1646 SB-MOP:SPECIALIZER is more correct.
1647 * incompatible change: PURIFY no longer copies the data from the
1648 dynamic space into the static and read-only spaces on platforms
1649 that use the generational garbage collector
1650 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1652 * bug fix: GC race condition occasionally resulting in crashes with
1653 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1655 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1657 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1658 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1659 * bug fix: an asynchronous interrupt could previously leave the
1660 system running with GC inhibited.
1661 * bug fix: a DECLARE form evaluated at top-level now causes an error
1662 rather than silently (or verbosely) returning NIL.
1663 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1664 result in a error being signalled due to source form lookup errors.
1665 (reported by Peter Graves)
1667 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1668 * incompatible change: removed writer methods for host-ent-name,
1669 host-ent-addresses -- changing the values did not update the DNS
1671 * minor incompatible change: changed experimental JOIN-THREAD interface
1672 * documentation: the manual now lists reader and writer methods
1673 in class slot documentation sections. (thanks to Richard M Kreuter)
1674 * documentation: unwinding from asyncronous events has been
1675 documented as unsafe.
1676 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1677 in multithreaded application code.
1678 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1679 platforms. (thanks to James Anderson for the optimization hint)
1680 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1682 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1683 variants no longer cons.
1684 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1685 their NOT- variants no longer cons.
1686 * optimization: EQUAL hash tables no longer use SXHASH for objects
1687 of all data types, but instead use an EQL hash for types for which
1688 EQUAL is the same as EQL.
1689 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1690 are significantly faster.
1691 * optimization: new STRING-OUTPUT-STREAM implementation is much
1692 faster for large outputs and conses 30% less on average.
1693 * enhancement: XREF information is now collected for references made
1694 to global variables using SYMBOL-VALUE and a constant argument.
1695 * enhancement: SIGINT now causes a specific condition
1696 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1697 * bug fix: FILE-POSITION used to signal an error in some cases where
1698 ANSI requires it to return NIL.
1699 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1700 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1701 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1703 * bug fix: bad type declaration in the CLOS implementation has
1704 been fixed. (reported by James Anderson)
1705 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1706 (thanks to Lutz Euler)
1707 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1708 required by the CLHS. (reported by Samium Gromoff)
1709 * bug fix: dead unbound variable references now signal an error.
1710 (reported by Marco Monteiro)
1711 * bug fix: / with an unused value was being deleted in safe code.
1712 (thanks to Marco Monteiro and Kevin Reid)
1713 * bug fix: number of characters that can be written onto a single
1714 line in a file is unlimited.
1715 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1716 been fixed by inhibiting interrupts for when GC is disabled.
1717 * bug fix: some interrupt safety issues with GETHASH, (SETF
1718 GETHASH), CLRHASH and REMHASH have been fixed.
1719 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1720 specifier no longer causes infinite recursion.
1721 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1722 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1723 * bug fix: an &environment argument with the correct variable information
1724 is passed to macros that are expanded during byte compilation.
1725 (reported by Samium Gromoff)
1726 * bug fix: a logic error was causing the hash function for bignums to
1727 have excessive amounts of collisions. (reported by Faré Rideau)
1728 * bug fix: modifying the contents of an array could change the return
1729 value of SXHASH on that array, which is only allowed for strings
1730 and bit vectors. (bug introduced in 0.9.16)
1731 * improvement: the x86-64/darwin port now passes all tests (except
1732 for the debugger tests) but should still be considered
1733 experimental until this is fixed.
1734 * improvement: a style-warning is signaled for CASE (etc) clauses with
1735 duplicate keys. (thanks to Kevin Reid)
1736 * improvement: macos/x86 and macos/x86-64 now use mach exception
1737 handlers for dealing with illegal instructions (for trapping and
1738 error handling) and memory protection violations (for GC).
1740 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1741 * new platform: experimental support for x86-64/darwin (MacOS).
1742 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1743 and getnameinfo sockets functions are used instead of gethostbyaddr
1744 and gethostbyname, on platforms where the newer functions are available.
1745 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1747 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1748 don't print the startup banner, but behave as if --noinform was passed
1749 as a command line argument. (thanks to Kevin Reid)
1750 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1751 * optimization: code using alien values with undeclared types is much faster.
1752 * optimization: the compiler is now able to open code SEARCH in more cases.
1753 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1754 * bug fix: using standardized COMMON-LISP special variables as loop
1755 variables no longer signals bogus package lock violations. (reported
1757 * bug fix: declaring local loop variables to be of a range-limited type
1758 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1759 (reported by Andras Simon)
1760 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1761 bugs remain on x86-64.)
1762 * bug fix: the #= and ## reader macros now interact reasonably with
1763 funcallable instances.
1764 * bug fix: type-checks for function arguments were compiled using the
1765 compiler policy settings of the wrong lexical environment (in 1.0.2
1767 * bug fix: SHADOW accepts characters as string designators, as required
1768 by the spec (thanks to Eric Marsden)
1769 * bug fix: fixed GC safety issues when foreign functions are called with
1770 non-base strings as arguments
1771 * bug fix: more consistent error output for fatal-compiler-warnings, like
1773 * bug fix: functions with proper names were showing up as NIL in
1774 backtraces (reported by Edi Weitz, regression in 1.0.2)
1776 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1777 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1778 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1779 produce more efficient code on the x86 if the compiler can determine
1780 that (+ INDEX <constant>) does not require a bounds check and FOO
1781 has an element type at least 8 bits wide.
1782 * bug fix: references to undefined variables are handled the same way
1783 in toplevel forms as in the normal compiler
1784 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1786 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1787 (thanks to Jon Buller)
1788 * improvement: faster compilation times for complex functions
1789 * improvement: added readlink support to SB-POSIX (thanks to Richard
1792 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1793 * improvement: experimental support for mach exception handling on
1794 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1796 * improvement: support for GBK external format.
1797 (thanks to Chun Tian (binghe))
1798 * improvement: the debugger now displays variables that have been closed
1799 over, in code compiled with (DEBUG 2) or higher
1800 * improvement: support for executable cores on NetBSD (thanks to
1802 * new feature: added a RESTART-FRAME debugger command
1803 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1804 be used to provide an implementation for FILE-POSITION on Gray streams
1805 (thanks to Eric Marsden)
1806 * new feature: add syslog, openlog and closelog support to SB-POSIX
1807 (thanks to Richard Kreuter)
1808 * optimization: the function call overhead in code compiled with
1809 a high DEBUG optimization setting is significantly
1810 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1811 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1812 (thanks to Tony Martinez)
1813 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1814 evaluated once (reported by Kevin Reid)
1815 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1816 works again (thanks to Kilian Sprotte)
1817 * bug fix: an error is signaled for tagbodies with duplicate tags
1818 (thanks to Stephen Wilson)
1819 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1820 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1821 stack frames from alien callbacks.
1822 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1823 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1824 65k pages (thanks to David Woodhouse)
1825 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1827 changes in sbcl-1.0.1 relative to sbcl-1.0:
1828 * new platform: FreeBSD/x86-64, including support for threading.
1829 * new feature: the compiler stores cross-referencing information
1830 about function calls (who-calls), macroexpansion (who-macroexpands)
1831 and special variables (who-binds, who-sets, who-references) for code
1832 compiled with (< SPACE 3). This information is available through the
1833 sb-introspect contrib.
1834 * new feature: users may subclass SEQUENCE, and have instances of
1835 these classes interoperate with standard Common Lisp functions if
1836 a number of methods are defined. (This feature is experimental
1837 and the interface subject to change based on feedback from SBCL
1838 users and the general community)
1839 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1840 x86/x86-64, rather than the previous fixed depth of 8
1841 * improvement: another pthread back-end of mutex "pthread-futex".
1842 * bug fix: non-ascii command-line arguments are processed correctly
1843 (thanks to Yaroslav Kavenchuk)
1844 * bug fix: non-required arguments were not passed correctly when a method
1845 defined using DEFMETHOD was called from a mop-generated method using
1846 CALL-NEXT-METHOD (reported by Pascal Costanza)
1847 * bug fix: recursion is now permitted in accessors through
1848 SLOT-UNBOUND. (reported by Pascal Costanza)
1849 * bug fix: an error was signaled at startup if the HOME environment
1850 variable was defined, but had an empty value (reported by Peter Van Eynde)
1851 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1852 signal a PROGRAM-ERROR, not a BUG.
1853 * bug fix: SB-POSIX:READDIR works when built with large file support.
1854 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1856 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1857 for better automatic indentation support. (thanks to Matt Pillsbury)
1858 * optimization: loading generic functions no longer takes O(n^2) time,
1859 proportional to the amount of methods in the generic function
1860 (reported by Todd Sabin and Jeremy Brown)
1861 * optimization: the FIND and POSITION family of sequence functions
1862 are significantly faster on arrays whose element types have been
1864 * improvements to the Windows port:
1865 ** Intermittent heap corruption problems have been fixed. (thanks
1866 to Alastair Bridgewater)
1867 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1869 ** Lisp is able to unwind foreign exception frames from alien
1870 callbacks. (thanks to Alastair Bridgewater)
1872 changes in sbcl-1.0 relative to sbcl-0.9.18:
1873 * improvement: experimental support for threading on FreeBSD/x86.
1874 (thanks to NIIMI Satoshi)
1875 * improvement: runtime option --dynamic-space-size can be used
1876 to set the size of the dynamic space reserved on startup.
1877 * improvement: floating point modes in effect are now saved in
1878 core, and restored on startup.
1879 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1880 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1881 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1882 threads are not running after *SAVE-HOOKS* have run.
1883 * improvement: writes to CLOS instance slots are type-checked in code
1884 compiled with (SAFETY 3)
1885 * improvement: floating-point exception handling on FreeBSD (thanks to
1887 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1888 (thanks to Zach Beane)
1889 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1891 * improvement: added support for the Shift-JIS external format.
1892 (contributed by NIIMI Satoshi)
1893 * improvement: callbacks are supported on Linux/PPC. (thanks to
1895 * bug fix: compiler bug triggered by a (non-standard) VALUES
1896 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1897 * bug fix: file compiler no longer confuses validated and already
1898 dumped structurres. (reported by Kaersten Poeck)
1899 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1900 fill-pointer signals a type-error as required. (thanks to
1902 * bug fix: disassemly of funcallable instances works.
1903 * bug fix: single stepping on PPC.
1904 * bug fix: fix thread-safety problems in the type system (generally
1905 manifesting as nonsensical errors like "STRING is a bad type specifier
1906 for sequences" or "The value 1 is not of type FIXNUM")
1907 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1908 (reported by Josip Gracin)
1909 * bug fix: an error is signaled for attempts to displace arrays with
1910 incompatible element types (thanks to Mario Mommer)
1911 * bug fix: more correct handling of wide characters in debug info
1912 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1913 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1914 and don't cause extra consing
1915 * optimization: MAP and MAP-INTO are significantly faster on vectors
1916 whose elements types have been declared.
1917 * Improvements to SB-SPROF:
1918 ** Support for allocation profiling
1919 ** Reduced profiling overhead, especially for long profiling runs
1920 * Improvements to the Windows port:
1921 ** floating point exceptions are now reported correctly.
1922 ** stack exhaustion detection works partially.
1923 ** more accurate GET-INTERNAL-REAL-TIME.
1924 ** better RUN-PROGRAM behaviour in case of errors in the child
1926 ** PROBE-FILE now simplifies pathnames correctly.
1927 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1928 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1929 1st 1970 (although time timezone data will be unreliable).
1930 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1932 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1933 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1934 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1936 * bug fix: two potential GC deadlocks affecting threaded builds.
1937 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1938 returns T (reported by Anton Kazennikov)
1939 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1940 with non-variable places
1941 * bug fix: remove a race condition in the setting of
1942 funcallable-instance functions, this should make threaded CLOS
1943 code more stable against memory faults.
1944 * bug fix: corruption of specials when unbinding is interrupted by an
1945 asynchronous unwind (reported by Hannu Koivisto)
1946 * improvement: the debugger will now also display local variables that
1947 are only used once, for code compiled with a DEBUG optimization quality
1950 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1951 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1952 * incompatible change: External-format support for FFI calls. The
1953 SB-ALIEN:C-STRING no longer implies an ASCII
1954 external-format. Instead the string is subject to external-format
1955 conversion. Additionally return values of type SB-ALIEN:C-STRING
1956 are by default of type (SIMPLE-ARRAY CHARACTER), not
1957 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1958 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1959 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1960 * incompatible change: SB-EXT package no longer contains the
1961 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1962 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1964 * incompatible change: the single-stepper is no longer available
1965 on Alpha, Mips and Sparc platforms.
1966 * minor incompatible change: the direct superclasses of
1967 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1968 not (STANDARD-OBJECT FUNCTION). This makes the
1969 class-precedence-lists of GENERIC-FUNCTION and
1970 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1972 * minor incompatible change: the default stream external format on
1973 non-unicode SBCL is no longer detected from the locale, but is always
1975 * new feature: Add a version of evaluator that uses an interpreter instead
1976 of the compiler. EVAL still uses the compiler by default, to switch it
1977 to use the interpreter, set the value of the variable
1978 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1979 * minor incompatible change: the single-stepper REPL has been merged
1980 with the normal debugger (see the "Stepping" heading of the debugger help
1981 for more details). The debugger command STEP will no longer switch
1982 to the single-stepper REPL.
1983 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1984 for a type now works.
1985 * bug fix: loading of default sysinit file works. (thanks to Leonid
1987 * bug fix: better detection of circularities in the file-compiler.
1988 (reported by Marco Monteiro)
1989 * bug fix: the CL pathname functions now work with files that have
1990 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1991 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1992 systems with Unix98 pty semantics.
1993 * bug fix: ASDF-INSTALL will now work with bsd tar.
1994 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1996 * bug fix: timers expiring in dead threads no longer cause a
1997 type-error (reported by Paul "Nonny Mouse").
1998 * bug fix: thanks to more lightweight single-stepper instrumentation,
1999 code compiled with (DEBUG 3) will compile and execute significantly faster,
2000 and will have more accurate type-inferencing than before
2001 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2002 whose bindings are modified
2003 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2004 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2005 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2006 CL:SOFTWARE-VERSION with proper version
2008 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2009 * feature: implemented the READER-METHOD-CLASS and
2010 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2011 as specified by AMOP.
2012 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2014 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2015 (thanks to Lutz Euler)
2016 * optimization: hashing of general arrays and vectors has been
2017 improved. (reported by Any Fingerhut)
2018 * enhancement: SB-INTROSPECT is now able to find definitions of
2019 profiled functions. (thanks to Troels Henriksen)
2020 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2021 as well, allowing compiler-macros for SETF-functions to expand.
2022 * enhancement: step-instrumentation no longer wraps known
2023 single-value functions with multiple-value context, allowing
2024 better type inference.
2025 * fixed bug #337: use of MAKE-METHOD in method combination now works
2026 even in the presence of user-defined method classes. (reported by
2027 Bruno Haible and Pascal Costanza)
2028 * fixed bug #339(c): if there are applicable methods not part of any
2029 long-form method-combination group, call INVALID-METHOD-ERROR.
2030 (reported by Bruno Haible)
2031 * fixed bug #361: the :FUNCTION initarg in the protocol for
2032 initialization of methods can now be used to override
2033 internally-produced optimized functions. (reported by Bruno
2035 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2036 system-provided lambda expression no longer cause warnings about
2037 unbound #:|pv-table| symbols.
2038 * bug fix: improved the handling of type declarations and the
2039 detection of violations for keyword arguments with non-constant
2041 * bug fix: potentially erronous calls to PATHNAME and
2042 MERGE-PATHNAMES were being flushed in some cases.
2043 (reported by Richard Kreuter)
2044 * bug fix: compiled calls to TYPEP were mishandling obsolete
2045 instances. (reported by James Bielman and Attila Lendvai)
2046 * bug fix: format strings with ~> without matching ~< no longer
2047 trigger an AVER, but signal an understandable error instead.
2048 (reported by Antonio Martinez)
2049 * bug fix: specifying an output-file without a pathname-type for
2050 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2051 of input-file instead of "fasl". (reported by Robert Dodier)
2052 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2053 (reported by James Y Knight).
2054 * bug fix: compiler-macros-function did not consider the environment
2055 argument for shadowing by local functions.
2056 * bug fix: compiler-macros expansion was inhibited by local INLINE
2058 * bug fix: inline expansions of known functions were subject to
2059 step-instrumentation in high debug policies, leading to problems
2060 with type-inference.
2061 * bug fix: compiler failed to differentiate between different CONS
2062 types in some cases.
2063 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2064 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2065 * bug fix: #368: incorrect use of expressed vs. upgraded array
2067 * bug fix: #306a: more precise unions of array types.
2068 * thread-safety improvements:
2069 ** CONDITION-WAIT could return early on Linux, if the thread was
2070 interrupted and subsequently continued with SIGCONT.
2071 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2073 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2074 * added support for the ucs-2 external format. (contributed by Ivan
2076 * minor incompatible change: pretty printing of objects of type
2077 (cons symbol) is, in the default pprint-dispatch-table, now
2078 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2080 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2081 called later in a class's lifetime, possibly as late as when the
2082 first instance of the class is created. Previously,
2083 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2084 class became finalizeable.
2085 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2086 for multibyte external-format streams. (thanks to "vbzoli")
2087 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2088 with :ALLOCATION :CLASS inherited from superclasses of the
2090 * fixed bug: anonymous classes can now be created using the :NAME
2091 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2092 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2093 * fixed bug: core-files saved with :EXECUTABLE T can again be
2094 executed when SBCL_HOME isn't set. (reported by James Knight)
2095 * fixed bug: toplevel LOCALLY forms with declarations could
2096 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2097 * fixed bug: printing from several different threads using different
2098 values of *print-case* could cause invalid output, due to
2099 some internal special variables of the printer not being bound
2100 thread-locally (reported by Max Mikhanosha)
2101 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2102 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2103 (reported by Pascal Costanza)
2104 * fixed bug: FINALIZE-INHERITANCE is called from
2105 REINITIALIZE-INSTANCE on classes when the class has previously
2106 been finalized, as required by AMOP.
2107 * minor code generation optimizations:
2108 ** better register allocation in CLOS dispatching functions
2109 ** overflow detection when coercing signed bytes to fixnums on x86-64
2110 ** is now implemented with one IMUL instruction instead of three shifts
2111 ** more efficient bit-vector access on x86 and x86-64
2112 ** more efficient access to raw structure slots on x86 and x86-64
2113 * fixed some bugs revealed by Paul Dietz' test suite:
2114 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2115 return its argument.
2117 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2118 * feature: thread support on Solaris/x86, and experimental thread support
2120 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2122 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2123 default method for SLOT-UNBOUND.
2124 * minor incompatible change: prevent the user from specializing the
2125 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2126 somewhat counter to the intent of the protocol, I (CSR) think, and
2127 additionally it just doesn't work in SBCL as currently
2128 implemented, thanks to optimizations (that are always valid for
2129 the other three SLOT-VALUEish functions, but not for the setter).
2130 * minor incompatible change: the :SB-LDB feature is now enabled by
2131 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2132 the low-level debugger.
2133 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2134 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2135 down to an SB-SYS:FD-STREAM, allowing direct communication in
2136 more cases. Temporary files and pipes are still used as a fallback
2138 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2139 on the non-reentrant C functions localtime(3) and gmtime(3).
2140 * bug fix: global optimization policy was not visible in LOCALLY and
2142 * bug fix: class objects can be used as specializers in methods.
2143 (reported by Pascal Costanza)
2144 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2145 with a type error. (reported by blitz_ on #lisp)
2146 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2147 failed with a type error. (reported by Pascal Bourguignon)
2148 * bug fix: merging pathnames against defaults with :DIRECTORY
2149 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2150 (reported by James Y Knight)
2151 * bug fix: saving large (>2GB) cores on x86-64 now works
2152 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2153 constant index and a (simple-array (signed-byte 32)) array
2154 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2155 error (patch by Robert J. Macomber)
2156 * feature: TIME now displays the amount of run-time spent in GC
2157 * bug fix: The debugger now does a better job of respecting
2158 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2159 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2160 workaround for bug 403.)
2161 * bug fix: floating point exception handling now works on FreeBSD
2162 (thanks to NIIMI Satoshi)
2163 * fixed some bugs revealed by Paul Dietz' test suite:
2164 ** MISC.641: LET-conversion were not supposed to work in late
2166 * improvements to the Win32/x86 port:
2167 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2168 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2170 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2171 * new feature: source path information is generated for macro-expansion
2172 errors for use in IDE's like Slime (thanks to Helmut Eller)
2173 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2174 * bug fix: compiler does not loop forever on an invalid type in
2176 * improvement: compilation of most CLOS applications is significantly
2178 * optimization: added a limited bytecode compiler for simple toplevel
2179 forms, speeding up compilation and FASL loading
2180 * bug fix: the statistical profiler now properly distinguishes anonymous
2183 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2184 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2185 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2186 into subclasses of the finalized class. Now user calls to
2187 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2188 system return before any subclasses are finalized.
2189 * minor incompatible change: The reader no longer ignores errors
2190 regarding non-existent packages in #+ and #- feature tests.
2191 * new feature: command line options --no-sysinit, --no-userinit to
2192 inhibit loading the corresponding init files
2193 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2194 for sending data through UDP sockets (thanks to François-René Rideau)
2195 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2196 error is signalled instead (thanks to François-René Rideau)
2197 * minor incompatible change: Error signalling behaviour of lexical
2198 operations violating package locks has changed slightly. Refer to
2199 documentation on package locks for details.
2200 * enhancement: EVAL can process IF-expressions without resorting to the
2202 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2203 constant-folded properly due to missing out-of-line functions.
2204 (reported by Mika Pihlajamäki)
2205 * bug fix: LISTEN sometimes returned T even in cases where no data was
2206 immediately available from the stream
2207 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2208 were reversed. (reported by Levente Mészáros)
2209 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2210 when given a vector displaced to an adjustable array. (reported
2212 * bug fix: derivation of float boundaries from numbers outside the
2213 appropriate float range (reported by John Wiseman)
2214 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2216 * bug fix: precomputing cache entries for generic functions with
2217 some subclasses of specializers as yet invalid does not attempt to
2218 fill a cache line with a negative offset. (reported by Levente
2220 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2221 allow condition class objects as arguments to DOCUMENTATION and
2222 (SETF DOCUMENTATION); only find and set documentation for
2223 structure names for the STRUCTURE doc-type. (suggested by Gary
2225 * improvements to the Win32/x86 port:
2226 ** (user-homedir-pathname) and default initialization file
2227 locations now know about the user's "Documents and Settings"
2228 directory (thanks to Yaroslav Kavenchuk)
2229 ** run-program is implemented (thanks to Mike Thomas)
2230 ** sockets support (thanks to Timothy Ritchey)
2231 ** better backtrace support (thanks to Alastair Bridgewater)
2232 ** sb-grovel supported
2233 ** asdf-install and sb-posix work somewhat
2234 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2235 * improvements to the Solaris/x86 port:
2236 ** works on Solaris 11/Solaris Express
2237 ** floating-point exception handling support
2238 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2239 * fixed some bugs revealed by Paul Dietz' test suite:
2240 ** REMOVE-METHOD returns its generic function argument even when
2241 the method is not one of the generic functions' methods.
2242 ** objects declared as MEMBER types can be admissible arguments to
2243 structure accessors.
2244 ** printing characters should simply be printed by the FORMAT ~:C
2246 ** compiler failure when compiling functions with hairy constant
2247 defaults for optional parameters.
2248 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2249 function, which is already optimized.
2251 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2252 * new platform: experimental support for SBCL x86/Darwin, including
2253 MacOS X 10.4.5 on Intel.
2254 * new feature: Unicode character names are now known to the system
2255 (through CHAR-NAME and NAME-CHAR).
2256 * new feature: the filesystem location of SBCL's core file is
2257 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2258 * minor incompatible change: the contrib modules SB-POSIX and
2259 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2260 this change is to make it easier to distribute
2261 location-independent binaries.
2262 * bug fix: as implied by AMOP, standardized classes no longer have
2263 slots named by external symbols of public packages. (reported by
2265 * optimization: calling functions via constant symbols -- as in
2266 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2267 via the function object as in (FUNCALL #'FOO).
2268 * optimization: on x86 and x86-64, the calling convention for the
2269 case of dealing with an unknown number of values has been altered
2270 to be friendlier to the prediction heuristics implemented,
2271 particularly with reference to CALL and RET pairing. (thanks to
2272 Alastair Bridgewater)
2273 * optimization: on x86, the code for access to thread-local symbol
2274 values and binding/unbinding of thread-local symbols is smaller.
2275 (thanks to Alastair Bridgewater)
2276 * enhancement: CONSTANTP is now able to determine constantness of
2277 more complex forms, including calls to constant-foldable standardized
2278 functions and some special forms beyond QUOTE.
2279 * fixed bug: occasional GC crashes on Solaris/x86
2280 * optimization: x86-64 supports stack allocation of results of simple
2281 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2282 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2283 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2284 (thanks to James Knight)
2285 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2286 by the standard (thanks to Stephen Compall)
2288 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2289 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2290 be used for bundling the runtime and the core file into one
2291 executable binary. This feature is not currently supported on all SBCL
2292 platforms. (thanks to James Bielman and NIIMI Satoshi)
2293 * new feature: a generational or ephemeral garbage collector is now
2294 the default on the PowerPC platform (both Linux and Darwin). The
2295 old Cheney (stop and copy) collector is a build-time option.
2296 (thanks to Cyrus Harmon, after Raymond Toy)
2297 * minor incompatible change: the method by which SBCL finds its
2298 contributed modules has changed; it no longer relies on symbolic
2299 links from an $SBCL_HOME/systems directory, but searches directly
2300 in the subdirectories of $SBCL_HOME.
2301 * enhancement: the dynamic heap size on the Linux/PPC platform is
2302 markedly larger, even using the older Cheney garbage collector.
2303 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2304 certain complicated string types. (reported by Gary King)
2305 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2306 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2307 * fixed bug: DOCUMENTATION on structures no longer signals an
2308 error if no structure type of the right name exists. (reported by
2310 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2311 applicable non-standard primary or :AROUND method on
2312 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2313 no longer cause unbound variable errors. (reported by Kevin Reid)
2314 * fixed bug: metacircle resolution in cases where methods have slots
2315 added before the slots from STANDARD-METHOD. (reported by Jean
2317 * fixed bug: the Power PC assembly code for calling into lisp
2318 sometimes computed its return address wrongly (depending on the
2319 15th bit of the address, fixed at link time). This used to
2320 manifest itself in a segmentation violation while building PCL.
2321 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2322 many others over the years)
2323 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2324 the stack pointer (treated as a signed integer) is negative.
2325 (thanks to Peter van Eynde)
2327 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2328 * new platform: experimental support for the Windows operating
2329 system has been added. (thanks to Alastair Bridgewater)
2330 * fixed several bugs in and robustified the PPC FFI (including
2331 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2332 * bug fix: allow non-simple string symbol names (reported by Paul
2334 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2336 * bug fix: saving a core corrupted callbacks on x86/x86-64
2337 * bug fix: closed a loophole in metacircularity detection and
2338 grounding in the PCL implementation of CLOS.
2339 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2340 (reported by tomppa on #lisp)
2341 * bug fix: clear the direction flag on Lisp -> C transitions, as
2342 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2343 (reported by Andrej Grozin and Hendrik Maryns)
2344 * optimization: major improvements to GC efficiency on GENCGC platforms
2345 * optimization: faster implementation of EQUAL
2346 * optimization: emit more efficient opcodes for some common
2347 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2348 * optimization: several other minor code-generation improvements on x86-64
2349 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2351 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2352 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2353 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2354 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2355 by ANSI as a generic function, and for consistency (SETF
2356 GENERIC-FUNCTION-NAME) is treated likewise.
2357 * fixed bug #233.b: make constraint propagation notice when a variable
2358 value is changed after it is referenced but before it is used
2359 * fixed bug #296: no more arbitrary behaviour from filenames with
2360 odd characters as --load arguments. (reported by Adam Warner)
2361 * fixed bug #390: :CHARACTER-SET pathname components now work as
2362 expected. (reported by Tim Daly Jr)
2363 * fixed bug #391: complicated :TYPE intersections in slot
2364 definitions no longer cause an error in PCL internals.
2365 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2366 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2367 returning the number of octets which would be written to the
2368 file-stream. (thanks to Robert J. Macomber)
2369 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2370 arguments to the internal stream functions. (thanks to David
2372 * bug fix: stack exhaustion is now handled on the x86/SunOS
2373 platform. (thanks to Daisuke Homma)
2374 * bug fix: more accurate ROOM results on GENCGC platforms
2375 * optimization: improved type inference for arithmetic-for
2376 index variables in LOOP
2377 * optimization: faster floating-point SQRT on x86-64
2378 * fixed some bugs revealed by Paul Dietz' test suite:
2379 ** DOCUMENTATION returns NIL instead of "" for method combinations
2380 that don't have a docstring
2382 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2383 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2384 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2385 therefore are not customizeable by user code (as seems to be at
2386 least permitted and maybe required by AMOP). As a consolation,
2387 however, the SBCL implementation of these functions now calls
2388 REINITIALIZE-INSTANCE as specified by AMOP.
2389 * bug fix: slot-definition documentation is propagated as per ANSI
2390 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2391 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2392 argument, as do eslotd initialization methods. (from Pascal
2393 Costanza's "Closer" project)
2394 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2395 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2397 * bug fix: it is now possible to have more than one subclass of
2398 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2399 (reported by Bruno Haible, Pascal Costanza and others)
2400 * bug fix: the dependent update protocol now works for generic
2401 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2402 and Pascal Costanza)
2403 * bug fix: condition-class instances corresponding to
2404 DEFINE-CONDITION forms are now created eagerly. (reported by
2405 Kalle Olavi Niemitalo on comp.lang.lisp)
2406 * bug fix: floating point printing is more accurate in some
2407 circumstances. (thanks to Simon Alexander)
2408 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2409 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2410 * bug fix: callbacks on OS X now preserve stack-alignment.
2411 (thanks to Cyrus Harmon)
2412 * enhancement: the x86-64 disassembler is much better at
2413 disassembling SSE instructions. (thanks to Lutz Euler)
2414 * enhancement: CHECK-TYPE on a variable now allows type-inference
2415 (thanks to Vincent Arkesteijn)
2416 * optimization: improved performance of EUC-JP external format.
2417 (thanks to NIIMI Satoshi)
2418 * optimization: performance improvements to IO on file streams of
2419 :ELEMENT-TYPE CHARACTER
2420 * optimization: much faster memory allocation on x86-64
2421 * optimization: faster garbage collections (latency and throughput)
2423 * optimization: faster bignum subtraction and division on x86 and x86-64
2424 (thanks to Lutz Euler)
2425 * optimization: more accurate type-inference for loops that use a
2426 floating point index variable or a negative step.
2428 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2429 * bug fix: add a workaround to SBCL looping infinitely at startup on
2430 Linux kernels with apparently buggy implementations of personality().
2431 (thanks to Svein Ove Aas)
2432 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2433 (thanks to David Lichteblau)
2434 * bug fix: local bindings shadow global symbol macros for
2435 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2436 * optimization: non-open coded uses of numeric comparison operators
2437 (e.g. >) no longer cons when called with more than one parameter
2438 on platforms supporting dynamic-extent allocation.
2439 * enhancement: saving cores with foreign code loaded is now supported
2440 on MIPS/Linux in addition to the previously supported platforms.
2441 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2442 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2443 * bug fix: division by zero in sb-sprof when no samples were collected
2444 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2445 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2446 (thanks to Alexander Kjeldaas)
2447 * new feature: ignoring the return values of destructive functions
2448 like NREVERSE signals a compile-time style-warning.
2449 (thanks to Kevin Reid)
2450 * new feature: the alignment of alien structure fields can be
2451 explicitly specified. (thanks to Cyrus Harmon)
2452 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2453 and dump core on SIGQUIT
2455 ** incompatible change: threads do not inherit values of specials
2456 from their parents (see manual)
2457 ** bug fix: threads stacks belonging to dead threads are freed by the
2458 next exiting thread, no need to gc to collect thread stacks anymore
2459 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2460 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2461 ** bug fix: dynamic variable and thread start related gc lossage
2462 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2464 * fixed some bugs revealed by Paul Dietz' test suite:
2465 ** SUBTYPEP is slightly more accurate on heinously complicated
2466 CONS types where some of the members have uncertain (in the
2467 NIL, NIL sense) type relationships to each other.
2469 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2470 no longer purified unless :PURIFY T is explicitly specified.
2471 ** Non-purified cores are significantly smaller than before
2473 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2474 * new feature: timers based on Zach Beane's excellent timer package
2475 * added support for the following external formats: koi8-u,
2476 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2477 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2478 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2479 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2480 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2481 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2482 * incompatible change: a threaded SBCL will no longer revert to
2483 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2484 * bug fix: interrupts are disabled until startup is complete; no
2485 more sigsegvs when receiving a signal to soon
2486 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2488 * bug fix: add a workaround for the memory randomization features in
2489 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2490 workaround will only be in effect on systems with the proc filesystem
2492 * bug fix: printing objects of type HASH-TABLE signals a
2493 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2495 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2496 have been running for over 50 days. (reported by Gilbert Baumann)
2497 * bug fix: the logic for getting names of functions gets less
2498 confused when confronded with alternate-metaclass
2499 funcallable-instances. (reported by Cyrus Harmon)
2500 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2501 consistent, even on internal alternate-metaclass objects.
2502 * bug fix: flush closure information collected by physical
2503 environment analysis prepass before the main pass. (bug reported
2505 * bug fix: compiler pack phase does not modify a hashtable, which is
2506 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2507 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2508 may be expanded. (reported by Alexander <malishev> on c.l.l)
2509 * bug fix: no more style-warnings when compiling code using LAST
2510 under high-SPEED low-SPACE settings. (reported by David Wallin
2512 * fixed some incompatibilities between SBCL's MOP and the MOP
2514 ** the METAOBJECT class is now implemented;
2515 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2516 STANDARD-OBJECT, as required;
2517 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2518 now compatible (as required by VALIDATE-SUPERCLASS); there
2519 remains a consistency requirement over the presence or absence
2520 of the FUNCTION class in the superclass list of finalized
2521 classes; see the manual for more details;
2522 ** the :AROUND method for COMPUTE-SLOTS on
2523 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2524 requested slot ordering.
2526 ** bug fix: parent thread now can be gc'ed even with a live
2528 ** bug fix: binding a special with PROGV to no value is not
2529 the same as that symbol not having been bound (thanks to
2531 ** bug fix: binding specials is thread safe (thanks to
2533 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2534 and SB-SPROF do not die with 'no handler for signal XX in
2535 interrupt_handle_now(..)' anymore
2536 ** bug fix: WITH-TIMEOUT works with multiple running threads
2537 * fixed some bugs revealed by Paul Dietz' test suite:
2538 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2539 the :method-class keyword argument.
2541 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2542 * new port: the Solaris operating system on x86 processors is now
2543 mostly supported, though some rough edges in the environment
2544 remain. (thanks to Daisuke Homma)
2545 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2546 space for its heap. (thanks to Thiemo Seufer)
2547 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2548 closures. (thanks to Thiemo Seufer)
2549 * minor incompatible change: eof selects abort in the debugger.
2550 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2551 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2553 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2554 deprecated, and will go away in a future revision of SBCL.
2555 * minor incompatible change: GC-ON and GC-OFF are no longer
2556 implemented with a counter, it does not matter how many times gc
2557 is switched on or off
2558 * bug fix: discriminating functions for generic function classes
2559 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2560 make invalid assumptions about method precedence order. (reported
2562 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2563 platforms. (thanks to Thiemo Seufer)
2564 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2565 * bug fix: correct pathname printing with printer escaping is on.
2566 (thanks to Kevin Reid)
2567 * bug fix: complex VOP definitions in "user-space" no longer trigger
2568 package locks. (reported by Zach Beane)
2569 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2570 for funcallable-instance functions, and is no different from
2572 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2573 characters in the current readtable. (reported by Nicholas Neuss)
2574 * bug fix: SUBTYPEP on various CONS types returns more a more
2575 accurate acknowledgment of its certainty.
2576 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2577 lists in some cases. This partially fixes bug 384.
2578 * flush all standard streams before prompting in the REPL and the
2580 * bug fix: signal handling and triggering gc do not conflict
2581 directly anymore, in particular a high frequency sb-sprof does
2582 not prevent gc from running
2583 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2584 approximation for timezone and DST information between the
2585 universal time epoch and the smallest negative 32-bit time_t.
2586 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2587 year 1899 so long as the encoded time is non-negative.
2588 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2589 the correct answer for non-constant rotate amounts when performing
2590 an inline 32-bit rotation.
2592 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2593 there is only one thread in the session
2594 ** bug fix: memory leak for streams created in one thread and
2595 written to in another
2596 ** bug fix: lockup when compiled with gcc4
2597 ** bug fix: race that allows the gc to be triggered when gc is
2599 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2600 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2602 ** bug fix: finished threads are gc'ed properly
2603 * fixed some bugs revealed by Paul Dietz' test suite:
2604 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2605 has arguments with a different set of applicable methods from
2606 the orignal arguments.
2607 ** The type error thrown by MAP now has a correct expected-type
2609 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2610 name a compiled function.
2611 ** Three MISC tests where a large bignum was improperly coerced to
2612 a float that couldn't represent that bignum during type
2613 derivation were fixed.
2614 ** SUBTYPEP can now handle types involving the negation of a
2615 list-form FUNCTION type.
2616 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2617 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2618 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2620 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2621 * New feature: Experimental support for bivalent streams: streams
2622 opened with :element-type :default now allow character and binary
2623 (unsigned-byte 8) I/O
2624 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2625 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2627 * bug fix: no more highly sporadic "couldn't check whether ~S is
2628 readable" when reading a stream and an interrupt hits in the middle
2629 of a select system call
2630 * compiler better recognizes complex arrays (reported by Eduardo
2632 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2633 for variables on SBCL built with linkage-tables. (reported by Luis
2635 * various error reporting improvements.
2636 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2637 (Thanks to Thiemo Seufer)
2638 * bug fix: nested reader invokations work correctly
2639 * bug fix: it is possible to have simultaneous references to foreign
2640 code and foreign data with the same name.
2642 ** added x86-64 support
2643 ** incompatible change: the threading api now works with thread
2644 objects instead of thread ids
2645 ** bug fix: threads are protected from signals and interruption when
2646 starting up or going down
2647 ** bug fix: a race where an exiting thread could lose its stack to gc
2648 ** bug fix: don't halt on infinite error in threads if possible
2649 ** fixed numerous gc deadlocks introduced in the pthread merge
2650 ** bug fix: fixed thread safety issues in read and print
2651 ** bug fix: debugger doesn't hang on session lock if interrupted at
2652 an inappropriate moment
2653 ** bug fix: run-program is now thread safe(r)
2654 ** bug fix: inner with-recursive-lock no longer releases the mutex
2655 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2656 * fixed some bugs revealed by Paul Dietz' test suite:
2657 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2658 EXPECTED-TYPE slots filled.
2659 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2661 ** MAKE-CONDITION accepts classes as type-designators.
2662 ** COMPILE may never return NIL.
2663 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2664 range before calling Unix time functions
2666 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2667 * numerous signal handling fixes to increase stability
2668 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2669 * minor incompatible change: we now correctly canonize default
2670 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2671 as per the MOP, rather than the historical (INITARG INITFUNCTION
2672 INITFORM). (reported by Bruno Haible)
2673 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2674 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2675 for more information.
2676 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2677 pathname is a directory pathname.
2678 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2679 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2681 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2682 :METACLASS argument in addition to a class name. (reported by
2683 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2684 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2685 (reported by Bruno Haible; patch from Gerd Moellmann)
2686 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2688 * bug fix: more cleanups to the floating point exception handling on
2689 x86-64 (thanks to James Knight)
2690 * bug fix: the compiler does not try to constant fold calls of
2691 COERCE and BIT-* functions when they return freshly constructed
2692 objects. (reported by Nikodemus Siivola and Paul Dietz)
2693 * optimization: improved the MIPS versions of generic (in the
2694 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2695 * optimization: direct conversion of (unsigned-byte 32) to floats on
2696 the PowerPC platform.
2697 * optimization: structure instances with raw slots now use less
2698 memory, and probably show better memory locality. (thanks to
2700 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2701 are treated as requests for stack allocation on the x86-64,
2702 Alpha-32, PPC and SPARC platforms.
2703 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2704 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2705 (thanks to Tony Martinez)
2707 ** gcing a dead thread can no longer lead to lockups
2708 ** threads block signals until they are set up properly
2709 ** errno is no longer shared by threads
2710 ** interrupt-thread restores the eflags register on x86
2711 ** fixed some lockups due to gc/thread interaction
2712 * fixed some bugs revealed by Paul Dietz' test suite:
2713 ** invalid dotted lists no longer raise a read error when
2714 *READ-SUPPRESS* is T
2715 ** signal an error if a symbol that names a declaration is used
2716 as the name of a type, or vice versa
2717 ** allow using the (declare (typespec var*)) abbreviation for
2718 (declare (type typespec var*)) with all type specifiers
2719 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2720 ** always return NIL from PPRINT-POP when OBJECT is NIL
2721 ** don't signal errors when pretty-printing malformed LABELS,
2722 FLET or MACROLET forms
2723 ** declarations in a DOLIST body are also in scope for the
2725 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2727 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2730 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2731 * fixed cross-compiler leakages that prevented building a 32-bit
2732 target with a 64-bit host compiler.
2733 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2734 opened with :IF-EXISTS :OVERWRITE.
2735 * fixed bug 281: error for an invalid qualifier in a short-form method
2736 combination method is not signalled until the faulty method is called.
2737 * bug fix: iteration variable type inferrer failed to deal with open
2738 intervals. (reported by Alan Shields)
2739 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2740 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2741 or more runtime options were provided to the sbcl binary.
2742 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2743 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2744 * optimization: there's now a fast-path for fixnum arguments in the
2745 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2746 * optimization: the code generated on x86-64 is more compact thanks
2747 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2748 * bug fix: floating-point exception handling now partly works on
2749 x86-64. (Thanks to James Knight)
2750 * improvement to the MIPS backend from Thiemo Seufer: C-style
2751 64-bit long long arguments and return values to alien functions
2753 * fixed some bugs revealed by Paul Dietz' test suite:
2754 ** the type-error signalled from WARN has a filled-in DATUM slot.
2755 ** the type-error required when a stream is not associated with
2756 a file has the stream as its datum.
2757 ** type-errors on single-floats on x86-64 no longer have
2758 :INVALID-OBJECT as the datum
2759 ** the type-errors signalled for invalid function names now have
2760 a correct expected type
2761 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2762 for structures defined with a :TYPE. Documentation strings for
2763 typed structures are no longer immediately discarded
2764 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2765 broadcast streams and synonym streams. FILE-LENGTH now also works
2766 on broadcast streams.
2768 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2769 * incompatible change: the --noprogrammer option, deprecated since
2770 version 0.7.5, has been removed. Please use the equivalent
2771 --disable-debugger option instead.
2772 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2774 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2775 inoperational for a while now) has been completely removed.
2776 * null lexical environments are now printed as #<NULL-LEXENV>,
2777 significantly reducing the amount of clutter in typical backtraces.
2778 * documentation on weak pointers, finalization, and after GC hooks
2779 has been added to the manual.
2780 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2781 as other specialized array types, is much faster. SUBSEQ and
2782 COPY-SEQ on such arrays have also been sped up.
2783 * optimization: EQL is now more efficient when at least other argument
2784 is known to be of type (OR FIXNUM (NOT NUMBER)).
2785 * fixed bug: the runtime is now less vulnerable to changes in the
2786 size of the SBCL object on OS X, and virtual memory is reserved for
2787 all spaces that need to be at a fixed address.
2788 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2789 * fixed bug: finalizers and after GC hooks that cause consing are now
2791 * fixed bug: compiler error messages and summaries are now printed to
2792 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2793 * fixed inference of the upper bound of an iteration variable.
2794 (reported by Rajat Datta).
2795 * fixed bug 211e: calling local functions with duplicated constant
2796 keyword argument no longer causes a bogus style warning about an
2798 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2799 ftype declaration to be disregarded. (reported by Dave Roberts)
2800 * fixed bug 373: caused by erronous compilation of references to alien
2801 variables in the runtime on ppc/darwin.
2802 * fixed bug 376: CONJUGATE type deriver.
2803 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2804 (reported by Baughn on #lisp)
2805 * a cross-compiler bug on non-x86 platforms has been identified and
2806 fixed. (thanks to Bruno Haible)
2807 * improvements to the MIPS runtime code for increased stability.
2808 (thanks to Thiemo Seufer)
2809 * increased the maximimum compact environment size to allow
2810 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2811 * partial workaround for bug 135: don't name the function we're
2812 calling for hairy cases of EVAL, so as not to accumulate one environment
2813 entry per call to EVAL. (reported by Kevin Reid)
2814 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2815 * optimization: type testing for non-vector arrays should be faster.
2816 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2818 * bug fix: setting 31st element of a bit vector to zero did not work
2820 * bug fix: redefining a class definition which failed due to a
2821 previous accessor / function clash now works (but see BUGS entry
2822 #380 for more problems in this area). (thanks to Zach Beane)
2823 * the long form of DEFINE-METHOD-COMBINATION disables method group
2824 checking when given a single method group with pattern *. (thanks
2826 * on x86 compiler supports stack allocation of results of simple
2827 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2828 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2829 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2830 * fixed some bugs related to Unicode integration:
2831 ** the restarts for recovering from input and output encoding
2832 errors only appear when there is in fact such an error to
2834 * fixed some bugs revealed by Paul Dietz' test suite:
2835 ** MISC.549 and similar: late transformation of unsafe type
2836 assertions into derived types caused unexpected code
2838 ** SCALE-FLOAT type deriver is less wrong.
2839 ** type derivers for EXP, LOG and similar functions compute result
2840 types for complex arguments better.
2841 ** (MISC.563) CONJUGATE type deriver works for very restricted
2843 ** out-of-line type testers for character strings are available.
2844 ** EQUAL compiler transform understands specialness of objects
2846 ** accessing double-floats stored on the stack now works on x86-64.
2847 ** debugger internals could sometimes create invalid lispobjs,
2848 resulting in GC crashes.
2849 ** MISC.548: type check weakening can convert required type into
2851 ** initialization forms for bindings are not in scope of free special
2854 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2855 * incompatible change: thread support for non-NPTL systems has
2856 been removed - locking is buggy and unreliable. A threaded
2857 SBCL build will now warn at startup and refuse to create
2858 new threads, unless futex support is detected in the kernel
2859 * incompatible change: the top level REPL now has only an ABORT
2860 restart associated with it, not TOPLEVEL and ABORT as it used to.
2861 TOP and TOPLEVEL are now available as debugger commands for
2862 returning to the top level.
2863 * incompatible change: forms evaluated in the REPL now use the
2864 global optimization policy.
2865 * incompatible change: user- and system-initialization files are
2866 no longer processed with LOAD, but by READ and EVAL; hence the
2867 global optimization policy, startup package, readtable, etc,
2869 * The .fasl file format number has been incremented because of
2870 various incompatible changes.
2871 * internal entry point details and argument counts no longer appear
2872 in backtraces unless explicitly requested by setting
2873 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2874 * built-in and standard functions no longer have names like "top
2875 level local call to FOO".
2876 * fixed bug 32: functions defined in non-null lexical environments
2877 now have more legible printed representation
2878 * fixed bug 33: functions defined in non-null lexical environemnts
2879 are now more amenable to inspection by INSPECT.
2880 * workaround for bug 354: XEPs no longer appear in backtraces unless
2881 explicitly requested.
2882 * fixed bug: receiving the signal which results from attempting to
2883 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2884 SIGBUS on other *BSDs) on architectures where the C stack is also
2885 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2886 to debugger confusion or wild instability. (reported by Cheuksan
2888 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2889 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2890 (reported by Lutz Euler)
2891 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2892 compiled code. (reported by Paul Dietz)
2893 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2894 specialized parameter to a method to something that is not TYPEP
2895 the specializer is now possible.
2896 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2897 face of package deletion.
2898 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2899 pathname. (reported by David Tolpin on c.l.l)
2900 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2901 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2902 STRING-STREAM and FILE-STREAM, respectively.
2903 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2904 than previously; in addition, its test suite is now run on build.
2905 (thanks to Luke Gorrie)
2906 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2907 * optimization: added a immediate representation for single-floats
2909 * fixed some bugs revealed by Paul Dietz' test suite:
2910 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2911 ** attempting to create a package with a colliding nickname causes
2912 correctable errors to be signalled.
2913 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2914 ** several x86-64 backend bugs related to sign-extension of immediate
2917 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2918 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2919 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2921 * fixed loading of multiply forward-referenced layouts.
2922 (thanks to Cheuksan Wang)
2923 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2924 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2925 (see COMPILE-FILE documentation for details of :PRINT option)
2926 * fixed bugs 19 and 317: fixed-format floating point printing is
2927 more accurate. This also fixes a bug reported by Adam Warner
2928 related to the ~@F format directive.
2929 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2931 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2932 dispatch table if the from-char is a dispatch macro character.
2933 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2934 by the wordsize no longer ignore the last word. (reported by Lutz
2936 * fixed bug in type checking of dynamic-extent variables. (reported
2938 * optimization: sequence traversal functions use their freedom to
2939 coerce function designators to functions.
2940 * optimization: code with many calls to CLOS methods specialized on
2941 CLOS classes has had redundant type checks removed.
2942 * optimization: added declarations to speed up operations that access
2943 the internal character database (for example STRING-UPCASE)
2944 * optimization: comparison operations between floats and sufficiently small
2945 fixnums no longer create extra rationals
2946 * fixed some bugs related to Unicode integration:
2947 ** portions of multibyte characters at the end of buffers for
2948 character-based file input are correctly transferred to the
2949 start of the buffer at the next read.
2950 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2951 passing it through to OPEN.
2952 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2953 argument given to internal calls to OPEN.
2954 ** the built-in comment readers (introduced by character sequences
2955 ";" and "#|") are more forgiving to encoding errors; they will
2956 STYLE-WARN and then attempt to resync the stream at a character
2957 boundary. (thanks to Teemu Kalvas)
2958 * fixed some bugs in the x86-64 port:
2959 ** Negative short int return values from c-calls are sign-extended
2961 ** The stack is aligned to 16-bytes for c-calls, as required by
2962 the ABI. (thanks to Cheuksan Wang)
2963 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2964 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2965 for enums. (thanks to Vincent Arkesteijn)
2966 ** Multiple small optimizations and bugfixes for floating point
2968 * fixed some bugs revealed by Paul Dietz' test suite:
2969 ** Space, Tab, Linefeed, Return and Page have the invalid
2970 secondary constituent character trait.
2971 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2973 ** WITH-INPUT-FROM-STRING should only update the index place on
2975 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2976 works more reliably.
2977 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2978 with one-dimensional arrays with fill pointers.
2979 ** TYPE-OF failed on a complex with an integer realpart and a
2981 ** compiler failure during type inference for the code of form
2982 (IF (EQL X (THE ...)) ...) (MISC.535).
2984 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2985 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2986 platform. The port supports 61-bit fixnums, large memory spaces
2987 and reloading shared object files.
2988 * enhancement: saving cores with foreign code loaded is now
2989 supported on ppc/Darwin in addition to the previously supported
2991 * enhancement: the statistical profiler now walks deeper into the
2992 call stack for more meaningful call-graphs and accrued time
2993 reports (x86/x86-64 only). It also now reports time spent in
2995 * enhancement: it is now possible to trace most individual methods
2996 of a generic function in addition to tracing the generic function
2998 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3000 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3001 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3002 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3003 produces an error. (thanks to Vincent Arkesteijn)
3004 * bug fix: NAMESTRING on pathnames with :WILD components in their
3005 directories works correctly. (thanks to Artem V. Andreev)
3006 * fixed bug 125: compiler preserves identity of closures. (reported
3008 * bug fixed: functions with &REST arguments sometimes failed with
3009 "Undefined function" when compiled with (DEBUG 3). (reported by
3011 * bug fix: overflow during compiling of setting element of a bit
3012 vector with constant index and value. (reported by Timmy Douglas)
3013 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3014 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3015 * on x86 compiler partially supports stack allocation of dynamic-extent
3017 * GO and RETURN-FROM do not check the extent of their exit points
3018 when compiled with SAFETY 0.
3019 * fixed some bugs related to Unicode integration:
3020 ** encoding and decoding errors are now much more robustly
3021 handled; it should now be possible to recover even from invalid
3022 input or output to the terminal. (thanks to Teemu Kalvas)
3023 ** provided a first cut at implementing STRING-TO-OCTETS and
3024 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3025 ** altered the SB-MD5 contributed module slightly, changing the
3026 interface just enough for it to be supportable for builds where
3027 lisp characters are not eight bits.
3028 * fixed some bugs revealed by Paul Dietz' test suite:
3029 ** the FORMATTER-generated functions for ~V[ conditionals require
3030 the correct number of arguments.
3031 ** READ-FROM-STRING returns the mandated second value when applied
3032 to displaced strings.
3033 ** the #\Rubout and #\Backspace characters are treated as invalid
3034 constituent characters by the tokenizer.
3036 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3037 * new feature: reloading changed shared object files with
3038 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3039 * new feature: references to foreign variables and functions
3040 can now be compiled and loaded before the corresponding shared
3041 object file is loaded, as long as the foreign definitions are
3042 available at runtime.
3043 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3044 supported. (thanks to Dan Debertin)
3045 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3046 just keywords. (thanks to Vincent Arkesteijn)
3047 * fixed bug #331: structure-class instances corresponding to
3048 DEFSTRUCT forms are now created eagerly.
3049 * fixed bug #345: backtraces from calls to undefined functions work
3050 on x86 as well. Related bug #61 is now also partially fixed on x86
3051 (backtraces from throws to unknown catch tags.)
3052 * bug fix: lambda-list parsing is now stricter vrt. order and number
3053 of lambda-list keywords.
3054 * bug fix: as specified by AMOP, an error is signalled if a
3055 class-option appears multiple times in a DEFCLASS form. (reported
3057 * bug fix: RANDOM can be compiled when the compiler derives the type
3058 of its numeric argument as a disjoint set of small integers.
3059 (reported by Paul Dietz)
3060 * bug fix: starting a core saved with shared objects loaded when
3061 those objects are not available no longer causes threaded SBCL to
3062 hang. (reported by Sean Ross)
3063 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3065 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3066 argument, which must always be NIL. (reported by Kalle Niemitalo)
3067 * bug fix: printing 1.0d+23 no longer results in an error.
3068 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3069 * bug fix: structure slot setters preserve evaluation order. (thanks
3071 * fixed some bugs related to Unicode integration:
3072 ** RUN-PROGRAM can allow its child to take input from a Lisp
3073 stream. (reported by Stefan Scholl)
3074 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3075 locales. (reported by Ken Causey)
3076 * fixed some bugs revealed by Paul Dietz' test suite:
3077 ** INCF, DECF and REMF evaluate their place form as specified in
3079 ** FORMATTER expands ~{ ~} iteration directives with V or #
3080 parameters correctly.
3081 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3082 consequent uses no arguments correctly.
3083 ** the system has a partial understanding of the (COMPLEX RATIO)
3085 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3088 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3089 * new feature: a build-time option (controlled by the :SB-UNICODE
3090 keyword feature, enabled by default) for building the system with
3091 support for the entire 21-bit character space defined by the
3093 * new feature: the system now has rudimentary external-format
3094 support; the primary user-visible change at this time is that
3095 characters with the high bit set (such as lower-case-e-acute) will
3096 print correctly to a terminal in a UTF-8 environment.
3097 * minor incompatible change: BASE-CHAR no longer names a class;
3098 however, CHARACTER continues to do so, as required by ANSI.
3099 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3100 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3101 has been moved to the SB-EXT package (temporarily re-exported from
3103 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3104 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3106 * fixed bug #351: better error-handlind and reporting for malformed
3108 * fixed bug #350: bignum-printing is now more memory-efficient,
3109 allowing printing of very large bignums, eg. (expt 2 10000000).
3110 (reported by Bruno Haible)
3111 * fixed bug #302: better primitive-type selection for intersection
3113 * fixed bug #308: non-graphic characters now all have names, as
3114 required. (reported by Bruno Haible)
3115 * bug fix: redefining a class with different superclasses now correctly
3116 removes it from the direct-subclasses of its previous superclasses.
3117 (reported by David Morse)
3118 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3119 new value now works. (reported by Bruno Haible)
3120 * bug fix: correct canonicalization of multiple non-standard slot
3121 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3122 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3123 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3124 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3125 now exists, an signals an error.
3126 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3127 during macroexpansion for non-iteration variables as well. (reported
3128 by Bruno Haible for CMUCL)
3129 * bug fix: Cyclic structures and unprintable objects in compiler
3130 messages no longer cause errors. (reported by Bruno Haible)
3131 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3132 and READ-FROM-STRING all now return a primary value of NIL if
3133 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3134 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3135 (reported by Bruno Haible for CMUCL)
3136 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3137 do not designate a condition. (reported by Bruno Haible for
3139 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3140 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3141 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3142 permitting resolution in favour of any of the conflicting symbols.
3143 (reported by Bruno Haible for CMUCL)
3144 * bug fix: EQUAL compiler optimizations is less aggressive on
3145 strings which can potentially compare true despite having distinct
3146 specialized array element types.
3147 * bug fix: unit enumerations can be defined without dividing by
3148 zero. (thanks to Vincent Arkesteijn)
3149 * FORMAT compile-time argument count checking has been enhanced.
3150 (report from Bruno Haible for CMUCL)
3151 * a partial workaround for the bug 262: the compiler does not try to
3152 inline-expand a local function doing RETURN-FROM from a deleted
3153 BLOCK. (thanks to Peter Denno for the bug report and to David
3154 Wragg for the simple test case)
3155 * fixed some bugs revealed by Paul Dietz' test suite:
3156 ** RENAME-PACKAGE allows all package designators as new package
3158 ** constraint propagation and lambda variable substitution are
3159 more cautious in dealing with partially deleted code.
3160 ** compiler sometimes lost reoptimization passes.
3161 ** CERROR, given a condition as condition designator, passes its
3162 remaining arguments to the continue format control without
3164 ** Case-altering FORMAT directives work correctly on non-ASCII
3166 ** The REAL type specifier handles bounds outside the floating
3167 point ranges without signalling FLOATING-POINT-OVERFLOW.
3168 ** Functions with IR1-transformations can create intercomponent
3169 references to global functions.
3170 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3172 ** FORMAT ~R treats a nil value for its first parameter correctly.
3174 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3175 * enhancement: saving cores with foreign code loaded is now
3176 supported on x86/NetBSD and sparc/Linux in addition to the previously
3177 supported platforms.
3178 * bug fix: on some platforms repeated installations caused multiple
3179 copies of HTML documentation to be installed -- should not happen
3180 any more. (reported by Stefan Scholl)
3181 * bug fix: parsing self-recursive alien record types multiple times
3182 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3183 original patch by Helmut Eller for CMUCL)
3184 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3185 (thanks to Richard Kreuter)
3186 * bug fix: defining classes whose accessors are methods on existing
3187 generic functions in other (locked) packages no longer signals
3188 bogus package lock violations. (reported by François-René Rideau)
3189 * bug fix: special variables as DEFMETHOD parameters no longer have
3190 associated bogus type declarations. (reported by David Wragg and
3192 * bug fix: read-write consistency on streams of element-type
3193 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3194 * bug fix: redefiniton of the only method of a generic function with
3195 no DEFGENERIC no longer emits a full WARNING. In addition,
3196 redefinition of generic functions with no DEFGENERIC to an
3197 incompatible lambda list now signals an error. (thanks to Zach
3199 * bug fix: DEFGENERIC now works even when there's a function of the
3200 same name in an enclosing lexical environment. (thanks to Zach
3202 * fixed compiler failure, caused by instrumenting code during
3203 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3204 * optimization: added loop analysis and improved register allocation
3205 * fixed some bugs revealed by Paul Dietz' test suite:
3206 ** POSITION on displaced vectors with non-zero displacement
3207 returns the right answer.
3208 ** (SIMPLE-STRING) is a valid type specifier for sequence
3210 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3212 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3213 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3215 ** The justification version of the FORMAT ~< directive treats
3216 non-zero minpad parameter correctly.
3218 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3219 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3220 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3221 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3222 the supported interface.
3223 * new feature: Single-stepping of code compiled with DEBUG 2 or
3224 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3225 * new feature: saving cores with foreign code loaded is now
3226 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3227 Timothy Moore's work for CMUCL)
3228 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3229 parameters to * instead of NIL if no initform is supplied.
3230 (reported by Johan Bockgaard)
3231 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3232 correctly when FUNCALL appears as the car of the form. Note:
3233 despite this FUNCALL forms are not currently subject to
3234 compiler-macro expansion. (port of Raymond Toy's fix for the
3235 same from CMUCL, reported by Johan Bockgaard)
3236 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3237 (thanks for Teemu Kalvas)
3238 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3239 case instead of terminating the iteration (thanks for Julian
3240 Squires, Sean Champ and Raymond Toy)
3241 * bug fix: incorrect expansion of defgeneric that caused a style
3242 warning. (thanks for Zach Beane)
3243 * bug fix: slot accessor effective method computation works properly
3244 for classes with multiple non-standard applicable methods on
3245 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3246 * on x86 compiler supports stack allocation of results of LIST and
3247 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3248 CMUCL implementation by Gerd Moellmann)
3249 * fixed some bugs revealed by Paul Dietz' test suite:
3250 ** FORMAT strings with both the ~<~:;~> form of the justification
3251 directive and pretty-printing directives cause an error.
3253 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3254 * incompatible change: the internal functions
3255 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3256 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3257 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3258 instead of the old functions.
3259 * new feature: on platforms where "dladdr" is available foreign
3260 function names now appear in backtraces. (based on Helmut Eller's
3262 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3263 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3265 * documentation: ASDF manual is now distributed with SBCL.
3266 * bug fix: SBCL can now load its contributed modules with REQUIRE
3267 even if the system-provided entries have been removed from
3268 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3270 * bug fix: backtraces involving undefined functions or assembly
3271 routines are more informative. (thanks to Brian Downing)
3272 * bug fix: mutually referent alien structures now work correctly.
3273 (reported by Rick Taube)
3274 * bug fix: structures defined by WITH-ALIEN can be referred to
3275 within other definitions in the same WITH-ALIEN.
3276 * bug fix: division operators (MOD, TRUNCATE and the like) with
3277 constant zero divisors and integer dividends no longer generate
3279 * bug fix: provide default methods for INPUT-STREAM-P and
3280 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3281 * bug fix: improve the detection and resolution of MOP metacycles
3282 (where effective method computation depends on the generic function
3283 having its effective method computed). (reported by Bruno Haible)
3284 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3285 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3286 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3287 * bug fix: pathnames with relative directory components can be
3288 represented relative to default pathnames.
3289 * optimization: in taking the GCD of bignums, reduce the two bignums
3290 to approximately the same size (using Euclid's algorithm) before
3291 applying the more sophisticated binary GCD. (thanks to Juho
3293 * optimization: COUNT on bitvectors now operates word-at-a-time.
3294 * optimization: ASH with a positive, but not necessarily constant,
3295 (leftwards) shift, when in a modular context, is compiled to a
3297 * fixed some bugs revealed by Paul Dietz' test suite:
3298 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3299 if the corresponding argument is NIL.
3300 ** FORMAT directives accepting a minpad parameter treat negative
3302 ** literal commas as character parameters to FORMAT directives are
3304 ** literal spaces directly after ~<Newline> directives within a
3305 format-logical-block (~:< ~@:>) do not induce :FILL-style
3306 conditional newlines.
3307 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3308 as specified: it no longer includes conditional newlines).
3309 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3311 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3312 :PER-LINE-PREFIX argument does not evaluate to a string.
3314 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3315 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3316 the manual for details; for now, package locks can be disabled by
3317 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3318 if no major problems are found then it is likely that they will be
3319 compiled in unconditionally.
3320 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3321 unsupported operators on all platforms. To load a shared library
3322 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3323 object file, link it into a shared library outside of SBCL and
3324 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3326 * bug workaround: ROOM T and the GC were not working together
3327 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3328 reporting facility aren't preserved. That reporting has been
3329 disabled, so now until and unless someone figures out how to make it
3330 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3331 * minor incompatible change: as threatened around sbcl-0.8.0, the
3332 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3333 The symbols are also exported from SB-PCL for backwards
3334 compatibility, but more so than before SB-PCL should be treated as
3335 an implementation-internal package.
3336 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3338 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3339 It is known as of this release not to work on the Alpha, however.
3340 * fixed bug #167: errors signalled due to illegal syntax in method
3341 bodies are now more legible.
3342 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3343 designators and can hence be used with TYPEP.
3344 * fixed bug #333: CHECK-TYPE now ensures that the type error
3345 signalled, if any, has the right object to be accessed by
3346 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3347 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3348 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3350 * fixed bug #334: programmatic addition of slots using specialized
3351 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3352 and :ALLOCATION :CLASS slots.
3353 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3354 float exponents. (rereported by Peter Seibel)
3355 * fixed a bug: #\Space (and other whitespace characters) are no
3356 longer considered to be macro characters in standard syntax by
3357 GET-MACRO-CHARACTER.
3358 * fixed bug: initialization of condition class metaobjects no longer
3359 causes an instance of the condition to be created. (reported by
3361 * fixed bug: it is now possible to have slots such that
3362 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3363 description is neither :INSTANCE nor :CLASS.
3364 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3365 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3366 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3367 non-standard SLOT-DEFINITION-ALLOCATION values.
3368 * fixed bugs: various race conditions handling exiting threads.
3369 CL-PPCRE's thread torture test now passes.
3370 * fixed arguably-a-bug: GC time proportional to number of threads in
3371 system even when most of them are idle
3372 * optimization: improved performance of BIT and SBIT on bit-vectors.
3373 * .fasl file incompatibility: The fasl file version number has
3374 been incremented because of changes associated with package locks.
3376 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3377 * minor incompatible change: the system no longer provides
3378 optimization hints (conditions which are TYPEP
3379 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3380 mode; these hints are still emitted when higher SPEED optimization
3382 * new contrib module: a sampling profiler (profiling by statistical
3383 sampling, rather than by instrumenting functions) is available as
3384 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3385 * the behaviour of the standard function ED is now customizeable by
3386 third parties through a hook variable: see ED's documentation
3387 string for information on the protocol.
3388 * the compiler no longer emits efficiency notes for (FUNCALL X)
3389 when the type of X is uncertain under default optimization
3391 * fixed bug 276: mutating a binding of a specialized parameter to a
3392 method to something that is not TYPEP the specializer is now
3394 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3395 exhibit the required behaviour on the x86 platform. (thanks to
3396 Peter van Eynde, Eric Marsden and Bruno Haible)
3397 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3398 even for difficult arguments. (reported by Peter Graves)
3399 * fixed bug 141a: the backquote printer now descends quoted
3401 * fixed another bug in backquote printing: no more destructive
3402 modification of the form's list structure. (reported by Brian
3404 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3405 move between its address being taken and the call to
3406 interrupt_thread, fixing a crashing race condition.
3407 * the SB-POSIX contrib implementation has been adjusted so that it
3408 no longer exhibits ridiculously poor performance when constructing
3409 instances corresponding to C structs.
3411 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3412 * minor incompatible change: the sb-grovel contrib now treats C
3413 structures as alien (in the sense of SB-ALIEN) objects rather than
3414 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3415 has implications for memory management of client code
3416 (sb-grovel-returned objects must now be manually managed) and for
3417 type safety (alien objects now have full types).
3418 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3419 used to control emission of compiler diagnostics, rather than the
3420 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3421 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3422 quality should be considered deprecated.
3423 * install.sh now installs the user manual as well
3424 * (not quite a new documentable feature, but worth considering in
3425 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3426 beginnings of a semantically meaningful condition hierarchy is
3427 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3429 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3430 designator as the defaults argument.
3431 * fixed bug: Displaced arrays whose displaced-to array has become
3432 too small now cause ARRAY-DIMENSION to signal an error, providing
3433 for safer bounds-checking. (reported by Bruno Haible)
3434 * fixed bug: DEFCLASS slot definitions with identical :READER and
3435 :WRITER names now signal a reasonable error. (reported by Thomas
3437 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3439 * fixed bug: Invalid slot specification errors now print correctly.
3440 (thanks to Zach Beane)
3441 * fixed bug 320: Shared to local slot value transfers in class
3442 redefinitions now happen corrently from superclasses as
3443 well. (reported by Bruno Haible)
3444 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3446 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3447 improper lists correctly. (reported by Bruno Haible)
3448 * fixed bug 313: source-transform for <fun-name> was erroneously
3449 applied to a call of a value of a variable with name <fun-name>.
3450 (reported by Antonio Menezes Leitao)
3451 * fixed bug 307: The obsolete instance protocol ensures that
3452 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3453 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3454 remove dead unknown-values globs from the middle of the stack.
3455 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3456 easier to resume long computations after using *BREAK-ON-SIGNALS*
3457 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3458 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3459 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3460 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3461 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3462 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3464 * fixed a (fairly theoretical) bug in string printing: if
3465 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3466 does not have array-element-type equal to the most general string
3468 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3469 function name. (thanks to Nikodemus Siivola)
3470 * fixed bug: compile-time format string checker failed on
3471 non-closed ~{. (reported by Thomas F Burdick)
3472 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3473 don't warn on legal loop code involving more than one aggregate
3474 boolean. (thanks to Nikodemus Siivola)
3475 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3476 in keyword position to MAKE-PACKAGE was not being reported as
3478 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3479 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3481 * fixed bugs 280 and 312: the checking for multiple definitions in a
3482 file is less likely to become confused by uses of inline
3484 * fixed bug: the #S reader macro performs the keyword coercion
3485 specified for slot names. (reported by Kalle Niemitalo)
3486 * fixed bug: lambda lists may contain symbols whose names start with
3487 & but are not lambda-list-keywords; their occurrence triggers a
3489 * fixed bug 321: define-method-combination argument lambda lists do
3490 not cause invalid code to be generated when &optional or &aux
3491 variables have default values. (reported by Bruno Haible)
3492 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3493 have CLOS classes; this appears also to have fixed reported
3494 instability in stack exhaustion detection.
3495 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3496 MUFFLE-WARNING when no associated restart is present is now
3498 * optimization: rearranged the expansion of various defining macros
3499 so that each expands into only one top-level form in a
3500 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3502 * optimization: used a previously little-used slot in symbols to
3503 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3505 * fixed some bugs revealed by Paul Dietz' test suite:
3506 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3508 ** Fixed an optimization bug related to inheritance of initforms
3509 from local to shared slots.
3510 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3511 ** CAST optimizer forgot to flush argument derived type.
3512 ** print/read consistency on floats is now orders of magnitude
3513 more likely. (thanks also to Bruno Haible for a similar report
3515 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3516 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3517 for objects of type REAL. Make it so.
3518 ** SXHASH is specified (infelicitously) to respect similarity,
3519 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3520 it so. (thanks to Markus Ziegler)
3521 ** on the Alpha, the compiler succeeds in compiling functions
3522 returning a known number of arguments greater than 63.
3523 ** fixed handling of invalid NIL arguments in keyword position
3525 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3527 ** provided a readably-printable representation for RANDOM-STATE
3529 ** ensured that pathnames, where they have a namestring, always
3530 print using #P"..." syntax.
3532 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3533 * Support for the forthcoming 2.0 version of the NetBSD kernel
3534 running on x86 hardware has been added. (thanks to Perry
3535 E. Metzger most immediately, and others for their past work)
3536 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3537 current release version; SBCL's OpenBSD support had been broken
3538 since about the time of OpenBSD's switch to ELF binary format.)
3539 * [placeholder for DX summary]
3540 ** user code with &REST lists declared dynamic-extent, under high
3541 speed or space and low safety and debug optimization policy.
3542 * The manual has been converted to Texinfo format and the debugger
3543 chapter from the cmucl manual has been added.
3544 * A facility has been added to extract documentation strings from
3545 sbcl and store them as Texinfo-formatted snippets for inclusion in
3546 the manual (via Texinfo's @include directive)
3547 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3548 the test case to Dave Roberts)
3549 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3550 pointers. (reported by Sean Ross)
3551 * bug fix: PROFILE output is printed nicely even for large numerical
3552 values. (thanks to Zach Beane)
3553 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3554 greater than 32 handle EOF correctly.
3555 * bug fix: on X86 an immediate argument of the IMUL instruction is
3556 correctly printed in disassembly. (thanks to Lutz Euler)
3557 * bug fix: class slots in redefined classes preserve their old
3558 values. (thanks to Bruno Haible and Nikodemus Siivola)
3559 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3560 succeeds. (reported by Marco Baringer)
3561 * fixed some bugs revealed by Paul Dietz' test suite:
3562 ** READ-SEQUENCE now works on ECHO-STREAMs.
3563 ** RATIONALIZE works more according to its specification. (thanks
3566 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3567 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3568 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3569 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3570 should matter to you only if you rebind the printer control
3571 variables and then find you want different bindings in the
3572 debugger than in the ordinary execution of your program.)
3573 * The runtime build system has been tweaked to support building
3574 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3575 assembler and linker. (thanks to Nikodemus Siivola)
3576 * Unbound, undefined, undeclared variables now trigger full
3577 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3578 more often programmer error than deliberate exploitation of undefined
3580 * optimization: the hash algorithm for strings has changed to one
3581 that is less vulnerable to spurious collisions. (thanks to Juho
3583 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3584 needless bounds checking. (thanks to Juho Snellman)
3585 * optimization: implemented multiplication as a modular
3586 (UNSIGNED-BYTE 32) operation on the PPC backend.
3587 * fixed some bugs revealed by Paul Dietz' test suite:
3588 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3590 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3591 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3592 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3594 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3596 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3598 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3599 their output stream on EOF from read.
3600 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3601 have been read to end-of-file.
3602 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3604 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3605 description of determination of which consecutive characters
3607 ** Printing the "Space" character with escaping on now yields "#\\ ",
3608 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3609 ** Reading floating-point numbers with *READ-BASE* set to a number
3610 less than 10 works correctly.
3611 ** Reading floating-point numbers with *READ-BASE* set to a number
3612 more than 10 works correctly.
3613 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3614 the readtable currently in effect.
3616 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3617 * minor incompatible change: parsing of namestrings on a physical
3618 (Unix) host has changed; numbers after the final #\. in a
3619 namestring are no longer interpreted as a version field. This is
3620 intented to be largely invisible to the user, except that the
3621 meaning of the namestring "*.*.*" has changed: it now refers to a
3622 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3623 should usually be replaced by
3624 (make-pathname :name :wild :type :wild :version :wild)
3625 with the added benefit that this is more likely to be portable.
3626 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3627 option to OPEN now signals an error if the file being opened
3628 exists; this may have an impact on existing code.
3629 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3630 signals received, on the PowerPC platforms (both Linux and
3631 Darwin). (thanks to Pierre Mai for pointing out the location of
3633 * several fixes on OS X: The system now builds and runs cleanly on
3634 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3635 (thanks to Brian Mastenbrook)
3636 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3637 second-resolution: integer multiples of 1/3600 between -24 and 24.
3638 (thanks to Vincent Arkesteijn)
3639 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3640 type when called with 1 argument; PEEK-CHAR checked type of
3641 PEEK-TYPE only after having read first character from a
3642 stream. (reported by Peter Graves)
3643 * bug fix: the garbage collector now has much better locality
3644 behaviour, and in particular no longer treats all memory as being
3645 exhausted when many small objects point to each other in a deeply
3647 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3648 recognized as being TYPEP their class.
3649 * bug fix: the PUSHNEW documentation string has been corrected.
3650 (thanks to Vincent Arkesteijn)
3651 * bug fix: defaulting of the value for the last of an atypically
3652 large number of multiple values being bound was not being
3653 performed correctly on the Alpha or PPC platforms
3654 * optimization: implemented multiplication as a modular
3655 (UNSIGNED-BYTE 32) operation on the x86 backend.
3656 * optimization: SEARCH on simple-base-strings can now be open-coded.
3657 (see also contrib/compiler-extras.lisp for inspiration for
3658 teaching the compiler about the Boyer-Moore algorithm).
3659 * value, returned by MAX (and MIN) called with several EQUALP, but
3660 not EQL, arguments now does not depend on compiler settings.
3661 * fixed some bugs revealed by Paul Dietz' test suite:
3662 ** in stack analysis liveness information is propagated from
3663 non-local entry points.
3664 ** pathwise CAST removing failed when the CAST node did not start
3666 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3667 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3669 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3670 host is already defined.
3671 ** RENAME-FILE works on streams instead of signalling an internal
3673 ** PEEK-CHAR uses the current readtable when determining whether
3674 or not a character is whitespace.
3675 ** MERGE-PATHNAMES handles the case when the pathname does not
3676 specify a name while the default-pathname specifies a version.
3677 ** Pathnames now stand a better chance of respecting print/read
3679 ** Attempting to use standardized file system operators with a
3680 pathname with invalid :DIRECTORY components signals a
3682 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3684 ** DIRECTORY on logical pathnames is more correct.
3685 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3686 signal a TYPE-ERROR if their argument is not a stream.
3687 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3688 designator argument does not designate a stream.
3689 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3690 examining the synonym.
3691 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3693 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3694 element-type larger than ([UN]SIGNED-BYTE 32).
3696 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3697 * When built with the :SB-FUTEX feature, threaded builds now take
3698 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3699 for faster/more reliable mutex and condition variable support.
3700 * Incompatible change (but one you probably shouldn't have been using
3701 anyway): the interface and code for arbitrating between multiple
3702 threads in the same user session has been redesigned.
3703 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3704 error when called without an explicit environment argument.
3705 (thanks to Nikodemus Siivola)
3706 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3707 confused about their position. (thanks to Adam Warner and Gerd
3709 * bug fix: Pretty printing backquoted forms with unquotations in the
3710 argument list position of various code constructs such as LAMBDA
3711 now works correctly. (reported by Paul Dietz)
3712 * bug fix: Pretty printing unquotations no longer loses all
3713 stream position information.
3714 * optimization: performance of string output streams is now less
3715 poor for multiple small sequence writes.
3716 * optimization: performance of CSUBTYPEP in the presence of complex
3717 expressions involving CONS and NOT many times has been improved.
3718 (reported by Paul Dietz)
3719 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3721 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3722 streams for the REPL, for the debugger, and so on. (thanks to
3724 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3725 * fixed some bugs revealed by Paul Dietz' test suite:
3726 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3727 is ignored if it is too small, rather than propagating through
3728 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3729 ** extremely complex negations of CONS types were not being
3730 sufficiently canonicalized, leading to inconsistencies in
3732 ** VALUES tranformer lost derived type.
3734 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3735 * fixed a bootstrapping bug: the build process no longer assumes
3736 that the various BOOLE-related constants have the same value in
3737 host and target lisps. (noted by Paul Dietz' test suite on an
3738 SBCL binary built from CLISP)
3739 * The system can now be dynamically linked on the MIPS platform,
3740 which enables dynamic loading of foreign code from Lisp. (thanks
3741 to Ralf Baechle for discussions on the MIPS ABI)
3742 * The system now records debugging information for its own source
3743 files in a filesystem-position-independent manner, relative to
3744 the "SYS" logical host.
3745 * fixed a compiler bug: MV-LET convertion did not check references
3746 to the "max args" entry point. (reported by Brian Downing)
3747 * tweaked disassembly notes to be less confident about proclaiming
3748 some instruction as an LRA. (thanks to Brian Downing)
3749 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3750 now each have their own history, command character, and other
3751 characteristics. (thanks to David Lichteblau)
3752 * fixed some bugs revealed by Paul Dietz' test suite:
3753 ** compiler failure in compiling LOGAND expressions including a
3755 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3756 shift greater than 32.
3757 ** FLUSH-DEST did not mark blocks for type check regeneration.
3758 ** HANDLER-CASE failed to accept declarations in handler clauses
3759 in some circumstances.
3761 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3762 * New code in contrib/sb-introspect (still probably not entirely
3763 stable yet) provides some support for smart Lisp development
3764 environments like SLIME.
3765 * The conditions signalled for errors occurring when loading .fasl
3766 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3767 in a way which should help ASDF recover gracefully.
3768 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3769 stuff has been cleaned up. If you code contrib/ stuff, this might
3770 affect you, and you can look at contrib/README, contrib/STANDARDS,
3771 and/or the 0.8.4.27 diff to check.
3772 * In full calls the compiler now does not generate checks for declared
3773 argument types for all arguments.
3774 * various threading fixes
3775 ** and some experimental patches which didn't make it into
3776 the main tree for this release, but which are shipped in
3777 contrib/experimental-thread.patch as a possible fix for some
3778 failures (deadlock, spinning...) in GC-intensive multithreaded
3780 * fixed PPC build problem (source code incompatibility of different
3781 library versions): added offsetof() hackery which attempts to divine
3782 where glibc maintainers put uc_mcontext today
3783 * fixed bug 282: compiler does not trust type assertions while passing
3784 arguments to a full call.
3785 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3786 &OPTIONAL VALUES type parameter.
3787 * fix bug 214: algorithm for noting rejected templates is now more
3788 similar to that of template seletion. (also reported by rydis on
3790 * fixed bug 141b: printing backquoted information readably and prettily
3791 inserts a space where necessary.
3792 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3793 (CHARACTER 10) are now reported as errors, rather than propagated
3794 as unknown types. (reported by piso on #lisp)
3795 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3796 with values NIL and :ERROR. (thanks to Milan Zamazal)
3797 * fixed bug 191c: CLOS now does proper keyword argument checking as
3798 described in CLHS 7.6.5 and 7.6.5.1.
3799 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3800 longer raise an error; further, using a list as a for-as-arithmetic
3801 counter now raises a meaningful error.
3802 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3803 now understood by sequence creation functions such as MAKE-SEQUENCE
3805 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3806 a STRING-INPUT-STREAM.
3807 * compiler enhancement: SIGNUM is now better able to derive the type
3809 * type declarations inside WITH-SLOTS are checked. (reported by
3811 * fixed some bugs revealed by Paul Dietz' test suite:
3812 ** incorrect optimization of TRUNCATE for a positive first
3813 argument and negative second.
3814 ** compiler failure in let-convertion during flushing dead code.
3815 ** compiler failure while deriving type of TRUNCATE on an
3816 interval, containing 0.
3817 ** ASH of a negative bignum by a negative bignum count now returns
3819 ** intersection of CONS types now canonicalizes properly, fixing
3820 inconsistencies in SUBTYPEP.
3822 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3823 * incompatible change: The --disable-debugger command line
3824 option now clobbers the debugger at a more fundamental
3825 level, by redefining #'INVOKE-DEBUGGER instead of by
3826 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3827 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3828 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3829 enter the debugger REPL and then suffer recursive errors
3830 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3831 while under the new system, BREAK in --disable-debugger mode
3832 terminates the system just as an unhandled error would.
3833 * fixed compiler performance when processing loops with a step >1;
3834 * bug fix: DOCUMENTATION now retrieves generic function
3835 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3836 support has been systematized, and now supports the methods
3837 specified by ANSI, along with a default method and a method for
3838 slot documentation. (reported by Nathan Froyd)
3839 * bug fix: effective methods associated with a generic function are
3840 no longer cached over a change of that generic function's method
3841 combination. (reported by Andreas Fuchs)
3842 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3843 names a non-existent directory. (thanks to Andreas Fuchs)
3844 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3845 the PPC platform, lead to stack corruption; this has been fixed.
3846 (reported by Rainer Joswig)
3847 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3848 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3849 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3850 arithmetic in general, is now much more reliable on the PPC
3852 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3853 platform now returns the right answer.
3854 * optimization: restored some effective method precomputation in
3855 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3856 precomputation is now tunable.
3857 * optimization: compiler-internal data structure use has been
3858 reviewed, and changes have been made that should improve the
3859 performance of the compiler by about 20%.
3860 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3861 simple-base-strings and simple-bit-vectors is improved.
3862 * optimization: the optimization of 32-bit logical and arithmetic
3863 functions introduced in version 0.8.3 on the x86 has been
3864 implemented on the mips, ppc and sparc platforms; an
3865 implementation of the same facility, but for 64-bit arithmetic,
3866 has been added for the alpha.
3867 * microoptimization: the compiler is better able to make use of the
3868 x86 LEA instruction for multiplication by constants.
3869 * bug fix: in some situations compiler did not report usage of
3870 generic arithmetic in (SPEED 3) policy.
3871 * bug 145b fix: compiler used wrong type specifier while converting
3872 MEMBER-types to numeric.
3873 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3875 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3876 index argument now works properly on the Alpha platform.
3877 * bug fix: floating point exception treatment on the Alpha platform
3879 * bug fix: FILE-POSITION works much better on string input and
3880 output streams. (thanks to Nikodemus Siivola)
3881 * bug fix: many threading/garbage collection symptoms sorted.
3882 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3883 might be pseudo-atomic.
3884 * internal change: Stopping for GC is now done with signals not
3885 ptrace. GC is now done in whichever thread wanted it, instead of
3887 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3889 * bug fix: result form in DO is not contained in the implicit
3891 * incompatible change: ICR structure is changed; the value part of
3892 CONTINUATION is now called LVAR; corresponding functions are
3893 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3894 * added type deriver for ISQRT (thanks to Robert E. Brown).
3895 * bug fix: better support for loading from the command line when an
3896 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3898 * fixed some bugs revealed by Paul Dietz' test suite:
3899 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3900 ** ROUND and FROUND now give the right answer when given very
3901 small float arguments.
3902 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3904 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3905 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3906 ** LCM should return a non-negative integer.
3907 ** PARSE-INTEGER returned the index of a terminator instead of the
3908 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3909 ** PARSE-INTEGER returned an incorrect index being applied to a
3911 ** LCM with two arguments of 0 returns 0 rather than signalling
3913 ** unsigned addition of a 32-bit constant with the high bit set no
3914 longer causes an internal compiler error on the x86.
3915 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3916 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3917 with negative last argument.
3918 ** byte specifiers with zero size and position no longer cause
3919 an error during type derivation.
3920 ** bignum multiplication on the Alpha platform now returns the
3922 * porting: The system now builds on SuSE AMD64, although it still
3923 generates a 32-bit binary.
3924 * .fasl file incompatibility: The fasl file version number has
3925 been incremented (because of the changes to internal compiler
3926 data structures referred to above).
3928 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3929 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3930 more accurately, on the Darwin kernel running on PowerPC hardware.
3931 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3932 * Compiler code deletion notes now signal a condition of type
3933 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3934 an associated MUFFLE-WARNING restart.
3935 * The compiler now performs limited argument count validation of
3936 constant format strings in FORMAT, and where appropriate in ERROR,
3937 CERROR and WARN. (thanks to Gerd Moellmann)
3938 * New ASDF-INSTALL contrib can be used for automatic download and
3939 installation of third-party Lisp code from CCLAN or other sites
3941 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3942 which forces another thread to execute a function supplied by the
3944 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3945 now accept and act upon their :ELEMENT-TYPE keyword argument.
3946 (reported by Martin Atzmueller, Edi Weitz)
3947 * bug fix: FILE-POSITION now accepts position designators up to
3948 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3949 is the greater. (thanks to Patrik Nordebo)
3950 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3951 Kalle Olavi Niemitalo)
3952 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3953 printable. (reported by Eric Marsden)
3954 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3955 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3956 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3957 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3958 (thanks to Stig Sandoe)
3959 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3960 UNREAD-CHAR now correctly includes the unread character in the
3961 target sequence. (thanks to Gerd Moellmann)
3962 * bug fix in threaded builds: the system can now be suspended and
3963 resumed by shell job control with minimal disruption.
3964 * bug fixes in times and timezones >2038AD
3965 * better handling of "where is GNU make?" problem in build scripts
3966 (thanks to Nikodemus Siivola)
3967 * new optimization: inside a named function any reference to a
3968 function with the same name is considered to be a self-reference;
3969 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3970 optimization quality.
3971 * new optimization on x86: logical functions and + now have
3972 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3973 used when the result is truncated to 32 bits.
3974 * VALUES declaration is partially enabled.
3975 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3976 * fixed some bugs revealed by Paul Dietz' test suite:
3977 ** The system now obeys the constraint imposed by
3978 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3979 types form a lattice under type intersection.
3980 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3981 ** ASSOC now ignores NIL elements in an alist.
3982 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3983 and (1+ MOST-POSITIVE-FIXNUM) answers.
3984 ** The addition of a method with invalid qualifiers to a generic
3985 function does not cause an error to be signalled immediately;
3986 a warning is signalled, and the error is generated only on
3987 calling the generic function.
3988 * changed .fasl file version number, in part to add type codes for
3989 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3990 obscure ANSI requirements
3992 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3993 * fixed bug 148: failure to inline-expand a local function left
3994 garbage, confusing the compiler.
3995 * fixed bugs 3cd: structure slot readers perform type check if the
3996 slot can have an invalid value (i.e. it is either not initialized
3997 or can be written with a less specific slot writer).
3998 * bug fix: the compiler now traps array references to elements off
3999 the end of an array; previously, the bounds checking in some
4000 circumstances could go off-by-one.
4001 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4003 * type declarations for array element types now obey the description
4004 on the CLHS page "Declaration TYPE", as per discussions on
4005 sbcl-help around 2003-05-08. This means that a declaration
4006 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4007 declaration, all references to BAR will be asserted or assumed
4008 (with THE, so dependent on compiler policy) to involve objects of
4009 type FOO. Note that no such declaration is implied in
4010 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4011 * declared types of functions from the "Conditions"
4012 chapter. (reported by Paul Dietz)
4013 * bug fix: CERROR accepts a function as its first argument.
4014 * bug fix: NTH an NTHCDR accept a bignum as index
4015 arguments. (reported by Adam Warner)
4016 * optimization: character compare routines now optimize comparing
4017 against a constant character. (reported by Gilbert Baumann)
4018 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4019 argument now works properly on the MIPS platform.
4020 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4021 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4022 declared to have a functional type, does not cause an error
4024 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4025 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4026 * fixed bug: if last continuation of a deleted block has a
4027 destination, this destination should be deleted too. (reported by
4029 * fixed a bug in the bootstrap process: the host compiler's values
4030 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4031 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4032 test case from Patrik Nordebo)
4033 * improved the ability of the disassembler on the PPC platform to
4034 provide helpful disassembly notes.
4035 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4036 the class in more cases than previously.
4037 * bug fix: FILE-POSITION now understands :START and :END for
4038 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4039 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4040 8) data. (thanks to David Lichteblau)
4041 * bug fix: it is possible to add a method to a generic function
4042 without lambda list.
4043 * bug fix: reader failed to signal END-OF-FILE inside an
4044 object representation. (reported by Nikodemus Siivola)
4045 * fixed some bugs revealed by Paul Dietz' test suite:
4046 ** LAST and [N]BUTLAST should accept a bignum.
4047 ** condition slot accessors are methods.
4048 ** (VECTOR NIL) is a subtype of STRING.
4050 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4051 * minor incompatible change: some nonsensical specialized lambda
4052 lists (used in DEFMETHOD) which were previously ignored now signal
4054 * minor incompatible change: the system is now aware of the types of
4055 variables in the COMMON-LISP package, and will signal errors for
4056 most violations of these type constraints (where previously they
4057 were silently accepted).
4058 * minor incompatible change: COMPILE-FILE now uses the freedom
4059 afforded (ANSI 3.2.2.3) to use derived function types for
4060 functions defined in the same file. This also permits the system
4061 to warn on static type mismatches and function
4062 redefinition. (Currently it does not work with high DEBUG level.)
4063 * minor incompatible change: VALUES declaration is disabled.
4064 * When issuing notes, the compiler now signals a condition of type
4065 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4066 restart for use in user handlers. It is expected that the
4067 COMPILER-NOTE condition will eventually become a condition
4068 supertype to a hierarchy of note types, which will then be
4069 handleable in a similar fashion. However, at the moment, no such
4070 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4071 but it's an implementation detail, not a classification for the
4073 * Changes in type checking closed the following bugs:
4074 ** type checking of unused values (192b, 194d, 203);
4075 ** template selection based on unsafe type assertions (192c, 236);
4076 ** type checking in branches (194bc).
4077 * A short form of VALUES type specifier has ANSI meaning (it has
4078 increased the number of situations when SBCL cannot perform type
4080 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4081 keywords or constants is permissible.
4082 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4083 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4084 classes. (thanks to Antonio Martinez)
4085 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4086 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4087 argument to a pretty-print stream. Instead, it leaves any such
4088 operations to DESCRIBE-OBJECT methods.
4089 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4091 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4092 lambda lists. (thanks to David Lichteblau)
4093 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4094 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4095 (thanks to Gerd Moellmann)
4096 * fixed bug 246: increased compilation speed of long
4097 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4099 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4101 * DEFCONSTANT now throws a condition of type
4102 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4103 constant to a non-EQL value; CONTINUE and ABORT restarts
4104 respectively change and preserve the value.
4105 * fixed bug 63: The code walker, part of the implementation of CLOS,
4106 is now better at handling symbol macros.
4107 * bug fix: There is no longer an internal implementation type named
4108 CL:LENGTH. (reported by Raymond Toy)
4109 * bug fix: In macro-like defining macros/special operators the
4110 implicit block does not enclose the lambda list.
4111 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4112 enclosed in parentheses) are not suitable as type specifiers, and
4113 their use properly signals an error now.
4114 * bug fix: An argument count mismatch for a type specifier in code
4115 being compiled no longer causes an unhandled error at compile
4116 time, but signals a compile-time warning.
4117 * fixed simple vector readable printing
4118 * bug fix: DESCRIBE takes more care over whether the class
4119 precedence list slot of a class is bound before accessing it.
4120 (reported by Markus Krummenacker)
4121 * bug fix: FORMATTER can successfully compile pretty-printer format
4122 strings which use variants of the ~* directive inside.
4123 * bug fix: SEARCH now applies its TEST predicate to the elements of
4124 the arguments in the correct order. (thanks to Wolfhard Buss)
4125 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4126 in type inference. (thanks to Robert E. Brown)
4127 * bug fix: Reading in symbols with an explicit package name of ""
4128 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4129 * fixed some bugs revealed by Paul Dietz' test suite:
4130 ** NIL is now allowed as a structure slot name.
4131 ** Arbitrary numbers, not just REALs, are allowed in certain
4132 circumstances in LOOP for-as-arithmetic clauses.
4133 ** Multiple class redefinitions before slot access no longer
4134 causes a type error.
4135 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4136 association between the name and a class.
4137 ** Generic functions with non-standard method-combination and over
4138 five methods all of which return constants no longer return NIL
4139 after the first few invocations. (thanks to Gerd Moellmann)
4140 ** CALL-NEXT-METHOD with no arguments now passes the original
4141 values of the arguments, even in the presence of assignment.
4142 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4144 ** DISASSEMBLE works with closures and funcallable instances.
4145 ** ADD-METHOD now returns the generic function, not the new method.
4146 ** FIND-METHOD signals an error if the lengths of the specializers
4147 is incompatible with the generic function, even if the ERRORP
4149 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4150 which its argument is a member.
4151 ** DEFCLASS only redefines the class named by its class-name
4152 argument if that name is the proper name of the class;
4153 otherwise, it creates a new class.
4154 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4155 of the UNBOUND-SLOT condition to the name of the slot.
4156 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4157 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4158 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4159 SLOT-MAKUNBOUND in the specified fashion.
4161 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4162 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4163 cross-compilation host. As a consequence, we can now bootstrap our
4164 way up to SBCL starting with a bare gcc toolchain and human-readable
4165 source code (first the source to CLISP, then the source to SBCL).
4166 * A contributed module containing a partial implementation of the
4167 simple-streams interface has been included. (thanks to Rudi
4169 * A contributed module implementing the RFC1321 Message Digest
4170 Algorithm, known as MD5, has been included.
4171 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4172 no longer has any effect, as the code controlled by this feature
4173 has been deleted. (As far as we know, no-one has ever built using
4174 this feature, and its semantics were confused in any case).
4175 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4176 work on conditions (as required by the ANSI specification),
4177 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4178 expected behaviour on conditions. Users should note, however,
4179 that such behaviour is not required by the ANSI specification,
4180 and so use of this behaviour may render their code unportable.
4181 * fixed some bugs revealed by Paul Dietz' test suite:
4182 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4184 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4185 ** SXHASH on condition objects no longer returns NIL.
4186 ** :ALLOCATION :CLASS slots are better treated; their values are
4187 updated on class redefinition, and initforms inherited from
4188 superclasses are applied.
4189 ** REMOVE-METHOD returns its generic function argument even when
4190 no method was removed.
4191 ** SHARED-INITIALIZE now initializes the values of the requested
4192 slots, including those with :ALLOCATION :CLASS.
4193 ** ALLOCATE-INSTANCE now works on structure classes defined via
4194 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4196 ** SLOT-EXISTS-P now works on conditions, as well as structures
4198 ** MAKE-LOAD-FORM now has the required methods on
4199 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4200 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4201 keyword, and now implements the SLOT-NAMES argument.
4202 ** methods with &OPTIONAL arguments no longer allow too many
4203 arguments to be passed in the call without error.
4204 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4205 option is consistent with the required arguments of the generic
4206 function lambda list.
4207 * bug fix: REQUIRE accepts a string designator. (Thanks to
4209 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4210 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4211 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4212 * bug fix: The compiler now checks for duplicated variables in macro
4214 * bug fix: SETQ on globals returns the correct value.
4215 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4216 not a COMPILER-ERROR (followed by some other strange error on
4217 choosing the CONTINUE restart).
4218 * bug fix: make.sh and friends are now more consistent in the way that
4219 they look for GNU "make".
4221 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4222 * experimental native threads support (on x86 Linux >=2.4 only).
4223 This is not compiled in by default: you need to add :SB-THREAD to
4224 the target features. See the "Beyond ANSI" chapter of the manual
4226 * fix for longstanding nonANSIism: The old distinction between
4227 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4228 The return value from CL:FIND-CLASS is now a CLOS class, and
4229 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4230 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4231 * An interface to the MetaObject Protocol, as described in Kiczales,
4232 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4233 MIT Press, 1991, is available from the SB-MOP package.
4234 * incompatible change: the SB-PCL package should now be considered
4235 a private implementation detail, and no longer a semi-private MOP
4237 * minor incompatible change: due to rearrangement for threads, the
4238 control stack and binding stack are now allocated at arbitrary
4239 addresses instead of being hardcoded per-port. Users affected by
4240 this probably have to be doing advanced things with shared
4241 libraries, and will know who they are.
4242 * minor incompatible change: Previously, all --eval forms used were
4243 processed with READ before any of them were processed with EVAL.
4244 Now each --eval form is processed with both READ and EVAL before
4245 the next --eval form is processed. (Thus package operations like
4246 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4247 work as the user might reasonably expect.)
4248 * minor incompatible change: *STANDARD-INPUT* is now only an
4249 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4251 * minor incompatible change: Y-OR-N-P is now character-oriented,
4252 not line oriented. Also, YES-OR-NO-P now works without errors.
4253 (thanks to Antonio Martinez)
4254 * sb-aclrepl module improvements: an integrated inspector, added
4255 repl features, and a bug fix to :trace command.
4256 * Known functions, which cannot be open coded by the backend, are
4257 considered to be able to check types of their arguments. (fixing
4258 a bug report by Nathan J. Froyd)
4259 * fixed a bug in computing method discriminating functions: It is
4260 now possible to define methods specialized on classes which have
4261 forward-referenced superclasses. (thanks to Gerd Moellmann)
4262 * fixed evaluation order in optional entries (reported by Gilbert
4264 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4265 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4266 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4267 required-by-AMOP NAME argument, as well as CLASS and
4268 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4269 * fixed bug 20: DEFMETHOD can define methods using names that are
4270 not the proper names of classes to designate class specializers.
4271 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4272 Unix file descriptors, instead of blowing up. (thanks to Antonio
4274 * Garbage collection refactoring: user-visible change is that a
4275 call to the GC function during WITHOUT-GCING will not do garbage
4276 collection until the end of the WITHOUT-GCING. If you were doing
4277 this you were probably losing anyway.
4278 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4279 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4280 TYPEP the latter but not the former.
4281 * The compiler issues a full WARNING for calls to undefined functions
4282 with names from the CL package.
4283 * MAP-INTO for a vector destination is open coded. (reported by
4284 Brian Downing on c.l.l)
4285 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4286 documentation string.
4287 * fixed some bugs revealed by Paul Dietz' test suite:
4288 ** COPY-ALIST now signals an error if its argument is a dotted
4290 ** Condition slots are now accessed more correctly in the presence
4291 of multiple initargs for a given slot.
4292 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4293 exclude restarts of the same name associated with a different
4295 ** DEFCLASS of forward-referenced classes with another
4296 forward-referenced class in the superclasses list no longer
4298 ** Condition slots are now initialized once each, not multiple
4299 times. (thanks to Gerd Moellmann)
4300 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4302 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4303 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4304 arguments contain duplicated elements.
4305 ** RESTART-CASE understands local macros.
4306 ** RESTART-CASE associates exactly its own restarts with a condition.
4307 ** ENDP in safe mode checks its argument to be of type LIST.
4308 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4309 in question is unbound.
4310 ** Optimized MAKE-INSTANCE functions no longer cause internal
4311 assertion failures in the presence of duplicate initargs.
4312 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4313 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4314 propagated even in the ctor optimized implementation of
4316 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4318 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4319 * a better implementation of SXHASH on (simple) bit vectors,
4320 measured both in execution speed and in distribution of results
4321 over the positive fixnums, has been installed. Likewise, a better
4322 implementation of EQUAL for simple bit vectors is now available.
4323 * fixed CEILING optimization for a divisor of form 2^k.
4324 * fixed bug 240 (emitting extra style warnings "using the lexical
4325 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4326 by Antonio Martinez)
4327 * fixed SXHASH, giving different results for NIL depending on type
4328 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4329 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4330 variable. (found by Rolf Wester)
4331 * SBCL does not ignore type declarations for special
4332 variables. (reported by rif on c.l.l 2003-03-05)
4333 * some bug fixes in contrib/sb-aclrepl/
4334 * fixed some bugs revealed by Paul Dietz' test suite:
4335 ** a bug in the CONS type specifier, whereby the CAR and CDR
4336 types got intertwined, has been fixed;
4337 ** the type system is now able to reason about the interaction
4338 between INTEGER and RATIO types more completely;
4339 ** APPEND, [N]REVERSE and NRECONC check that those their
4340 arguments, which must be proper lists, are really so;
4341 ** An array specialized to be unable to hold elements has been
4342 implemented, as required -- yes, really -- by ANSI;
4343 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4344 on malformed property lists;
4346 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4347 * incompatible packaging change: in line with Unix convention,
4348 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4349 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4350 * REQUIRE and PROVIDE are now optionally capable of doing something
4351 useful. See the documentation string for REQUIRE.
4352 * infrastructure for a managed SBCL contrib system: contributed
4353 modules in this release include:
4354 ** the ASDF system definition facility;
4355 ** an interface to the BSD Sockets API;
4356 ** an ACL-like convenience interface to the repl;
4357 (thanks to Kevin Rosenberg)
4358 ** an implementation of ROTATE-BYTE, with efficient implementation
4360 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4361 gives a closer approximation to the right answer than previously.
4362 (thanks to Raymond Toy)
4363 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4364 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4365 optional environment arguments, as required by ANSI.
4366 * fixed bugs in other functions taking environment objects, allowing
4367 calls with an explicit NIL environment argument to be compiled
4369 * fixed bug 228: primary return values from
4370 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4371 COMPILE or FUNCTION.
4372 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4373 :TYPE will no longer signal errors on innocuous objects.
4374 * fixed bug 231b: SETQ is better at respecting type declarations in
4375 the lexical environment.
4376 * fixed a bug in DEFCLASS: classes named by symbols with no or
4377 unprintable packages can now be defined.
4378 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4379 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4380 * fixed compiler failure related to checking types of functions.
4381 (reported by Robert E. Brown)
4382 * the compiler is now much more consistent in its error-checking
4383 treatment of bounding index arguments to sequence functions: in
4384 (SAFETY 3) code, errors will be signalled in almost all cases if
4385 invalid sequence bounding indices are passed to functions defined
4386 by ANSI to operate on sequences.
4387 * fixed a bug in the build procedure: documentation of SBCL-specific
4388 packages is now preserved and available in the final Lisp image.
4389 * lifted FDEFINITION lookup out of loops in the implementation of
4390 many list operations. (thanks to Robert E. Brown)
4391 * fixed a bug in the reader: the #n# reader macro now works for
4392 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4393 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4394 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4395 E. Brown and Tony Martinez respectively)
4396 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4397 SLOT-BOUNDP: in particular, it is now able to optimize them much
4398 better, and is now not vulnerable to having packages renamed.
4399 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4400 always called when a slot is not present in an instance. (thanks
4402 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4403 longer signal an error on unreading a character following EOF on
4404 the previous constituent stream. (thanks to Tony Martinez)
4405 * fixed some bugs revealed by Paul Dietz' test suite:
4406 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4407 not just nonnegative fixnums;
4408 ** the logical bit-array operators such as BIT-AND now accept an
4409 explicit NIL for their "opt-arg" argument (to indicate a
4410 freshly-consed result bit-array);
4411 ** ELT now signals an error on an invalid sequence index in safe
4413 ** the type system is now cleverer about negations of numeric
4414 types, and consequently understands the BIGNUM and RATIO types
4416 ** the type system is now cleverer about the interaction between
4417 INTEGER and RATIO types: while bugs still remain, many more
4418 cases are accurately computed;
4419 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4420 if it is in the last clause;
4421 ** CONSTANTLY now correctly returns a side-effect-free function in
4423 ** DECLARE is no longer treated as a special-operator; in
4424 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4425 * incremented fasl file version number due to the change in the
4426 DEFSTRUCT-SLOT-DESCRIPTION structure.
4428 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4429 * minor incompatible change: code processed by the "interpreter" or
4430 EVAL now has a compilation optimization policy of (DEBUG 2)
4431 (changed from (DEBUG 1)) to improve debuggability of interactive
4432 development, and to allow the use of the debug RETURN command in
4434 * an experimental implementation of the RETURN command for the
4435 debugger has been included. (thanks to Frederik Kuivinen)
4436 * fixed bug 62: constraints were not propagated into a loop.
4437 * fixed bug in embedded calls of SORT (reported and investigated by
4439 * fixed some bugs revealed by Paul Dietz' test suite:
4440 ** printing and reading of arrays with some dimensions having
4441 length 0 (thanks to Gerd Moellmann);
4442 ** BOA constructor with &AUX argument without a default value does
4443 not cause a type error;
4444 ** CONSTANTP now returns true for all self-evaluating objects.
4446 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4447 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4448 accessors that are related by inheritance, as specified in the
4449 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4450 Valtteri Vuorikoski)
4451 * The compiler is now able to inline functions that were defined in
4452 a complex lexical environment (e.g. inside a MACROLET).
4453 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4455 * Support for the upcoming FreeBSD-5.0 release has been included.
4456 (thanks to Dag-Erling Smorgrav)
4457 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4458 effect when it is not in a toplevel context.
4459 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4460 stand a better chance of being correct. (thanks to Gerd
4462 * fixed bug in COERCE, which now signals an error on coercing a
4463 rational to a bounded real type which excludes the expected
4465 * The compiler is now able to derive types more accurately from the
4466 COERCE and COMPILE functions.
4467 * fixed bug 223: functional binding is considered to be constant
4468 only for symbols in the CL package.
4469 * fixed bug 231: SETQ did not check the type of a variable being set
4470 (reported by Robert E. Brown)
4471 * A new optimization for MAKE-INSTANCE has been included, fixing
4472 various bugs (including relating to :ALLOCATION :CLASS slots and
4473 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4475 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4476 ** As required by ANSI, LOOP now disallows anonymous collection
4477 clauses such as COLLECT I in conjunction with aggregate boolean
4478 clauses such as THEREIS (= I 1);
4479 ** LOOP now signals an error when any variable is reused in the
4480 same loop (including the potentially useful construct analogous
4481 to WITH A = 1 WITH A = (1+ A);
4482 ** IT is only a special loop symbol within the first clause of a
4483 conditional loop clause;
4484 ** LOOP with a typed iteration variable over a hashtable now
4485 signals a type error iff it should.
4486 * fixed some other bugs revealed by Paul Dietz' test suite:
4487 ** FILE-STREAM now names the class previously known as FD-STREAM;
4488 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4489 argument) no longer signals an error;
4490 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4491 of the slot symbol, rather than using the current package
4492 ((:CONC-NAME "") continues to intern the slot's name in the
4494 * incremented fasl file version number, because of the incompatible
4495 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4496 of the new implementation of DEFINE-COMPILER-MACRO.
4498 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4499 * Support for building SBCL for MIPS platforms running in
4500 little-endian mode has now been checked in, and basic
4501 functionality on said platforms verified.
4502 * minor incompatible change: PCL now records the pathname of a file
4503 in which methods and the like are defined, rather than its
4505 * minor incompatible change: TRUENAME now considers the truename of
4506 a file naming a directory to be the pathname with :DIRECTORY
4507 component indicating that directory.
4508 * minor incompatible change: a NAMED clause in the extended form of
4509 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4510 reason for the previous behaviour is unclear.
4511 * more systematization and improvement of CLOS and MOP conformance
4512 in PCL (thanks to Gerd Moellman and Pierre Mai):
4513 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4515 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4516 primary methods with no specializers;
4517 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4519 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4520 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4521 FORWARD-REFERENCED-CLASSes; error reporting on
4522 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4524 ** SXHASH on CLOS instances now uses a slot internal to the
4525 instance to return different numbers on distinct instances,
4526 while preserving the same return value through invocations of
4528 ** DEFMETHOD signals errors when methods with longer incongruent
4529 lambda lists are added to generic functions;
4530 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4531 CLASS, as specified in AMOP;
4532 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4533 on the order returned by the primary method for classes of
4534 class STANDARD-CLASS;
4535 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4536 * fixed some bugs shown by Paul Dietz' test suite:
4537 ** DOLIST puts its body in TAGBODY;
4538 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4540 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4541 value producing form;
4542 ** if more variables are given to PROGV than values, extra
4543 variables are bound and made to have no value;
4544 ** NSUBSTITUTE on list arguments gets the right answer with
4546 ** ELT signals an error of type TYPE-ERROR when the index argument
4547 is not a valid sequence index;
4548 ** LOOP signals (at macroexpansion time) an error of type
4549 PROGRAM-ERROR when duplicate variable names are found;
4550 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4551 ** FUNCALL of special-operators now cause an error of type
4553 ** PSETQ now works as required in the presence of side-effecting
4554 symbol-macro places;
4555 ** NCONC accepts any object as its last argument;
4556 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4558 ** loop-for-as-package does not require a package to be explicitely
4560 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4562 * fixed bug 166: compiler preserves "there is a way to go"
4563 invariant when deleting code.
4564 * fixed bug 172: macro lambda lists with required arguments after
4565 &REST arguments now cause an error to be signalled. (thanks to
4567 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4568 bug. (thanks to Matthew Danish)
4569 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4571 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4572 arguments are lexically rebound. (thanks to Gerd Moellmann and
4574 * fixed bug 194: error messages are now more informative when there
4575 is no primary method applicable in a call to a generic
4576 function. (thanks to Gerd Moellmann)
4577 * fixed bug in command line argument checking (thanks to Julian
4579 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4580 (thanks to Matthew Danish)
4581 * incremented fasl file version number, because of the
4582 SXHASH-related changes in the layout of CLOS data structures
4584 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4585 * minor incompatible change: The runtime (the Unix executable named
4586 "sbcl") is now much pickier about the .core files it will load.
4587 Essentially it now requires .core files to descend from the same
4588 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4589 as the runtime does. (The intent is to prevent the crashes which
4590 can occur, and which can even be reported as mysterious failures,
4591 when people patch the sources or change the build parameters
4592 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4593 sbcl and .core files.)
4594 * fixed bug: VALUES-LIST is no longer optimized away.
4595 * fixed bug 142: The FFI conversion of C string values to Lisp
4596 string values no longer conses excessively. (thanks to Nathan
4597 Froyd porting Raymond Toy's fix to CMU CL)
4598 * began to systematize and improve MOP conformance in PCL (thanks to
4599 Nathan Froyd, Gerd Moellman and Pierre Mai):
4600 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4602 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4603 ** FINALIZE-INHERITANCE is now called on class finalization;
4604 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4605 argument precedence order.
4606 * fixed bug 202: The compiler no longer fails on functions whose
4607 derived types contradict their declared type.
4608 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4609 so it can be non-toplevel.
4610 * The fasl file version number has changed (because of the new
4611 implementation of DEFMACRO).
4612 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4613 safe code, that any length requirement by their type-specifier
4614 argument is valid. The exceptions to this are described in bug
4616 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4617 functions now check the types of their inputs as required by ANSI.
4618 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4619 introduced symbol is DECLAREd to be SPECIAL.
4620 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4621 * fixed bug: :COUNT argument to sequence functions may be negative
4622 * fixed bug: body of DO-SYMBOLS may contain declarations
4623 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4624 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4625 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4626 symbol macro only once
4627 * fixed printing of call frame when argument list is unavailable
4628 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4629 * compiler no longer signals WARNING on unknown keyword
4632 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4633 * A beta-quality port to the mips architecture running Linux,
4634 based on the old CMUCL backend, has been made. It has been tested
4635 on a big-endian kernel, and works sufficiently well to be able to
4636 rebuild itself; it has not been tested in little-endian mode.
4637 * fixed an inconsistency between gencgc.c and purify.c which made
4638 dumping/loading .core files unreliable
4639 * fixed bug 120a: The compiler now deals correctly with IFs where
4640 the consequent is the same as the alternative, instead of
4641 misderiving the return type. (thanks to Alexey Dejneka)
4642 * fixed bug 113: Logical pathnames are now dumpable (the logical
4643 host is resolved at load-time, throwing an error if it is not
4645 * fixed bug 174: FORMAT's error message is slightly clearer when a
4646 non-printing character is used in a format directive.
4647 * fixed several bugs in compiler checking of type declarations, i.e.
4648 violations of the Python "declarations are assertions" principle
4649 (thanks to Alexey Dejneka)
4650 * fixed several bugs in PCL's error checking (thanks to Gerd
4652 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4654 * fixed bug in compilation of functions as first class values
4655 (thanks to Antonio Martinez-Shotton)
4656 * The compiler's handling TYPE-ERRORs which it can prove will
4657 inevitably happen at runtime has been cleaned up and corrected
4658 in several ways. (thanks to Alexey Dejneka)
4659 * improved argument type checking for various basic arithmetic
4660 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4661 lavished on them in the past that they can be compiled in many
4662 ways in different special cases
4663 * fixed bug 181: compiler checks validity of user supplied type
4665 * cleaned up code flushing in optimization: Function calls which
4666 should signal errors for safety purposes (e.g. which ANSI says
4667 should signal errors when their arguments are of incorrect type)
4668 are no longer optimized away.
4669 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4670 * incremented fasl file version number, because changes in the
4671 implementation of sequence functions like COERCE caused
4672 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4673 in old inline expansions) to become undefined. (Actually these
4674 changes were later undone, so we might very well be binary
4675 compatible with 0.7.7 after all, but leaving the version number
4676 incremented seemed like the simplest and most conservative
4679 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4680 * An alpha-quality port to the parisc architecture running Linux,
4681 based on the old CMUCL backend, has been made. This, even more so
4682 than the other backends, should be considered still a work in
4683 progress; known problems include that the Linux kernel in 64-bit
4684 mode does not propagate the correct sigcontext structure to
4685 userspace, and consequently SBCL on a parisc64 kernel will not
4687 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4688 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4689 suppressed.) Also now that the compiler is looking at declarations
4690 in the environment, it checks optimization declarations as well,
4691 and suppresses inlining when (> DEBUG SPEED).
4692 * More fixes have been made to treatment of floating point exception
4693 treatment and other Unix signals. In particular, floating point
4694 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4695 * The detection and handling of control stack exhaustion (infinite
4696 or very deeply nested recursion) has changed. Stack exhaustion
4697 detection is now done by write-protecting pages at the OS level
4698 and applies at all optimization settings; when found, a
4699 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4700 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4701 be caught using IGNORE-ERRORS.
4702 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4703 correctly when transforming recursive LABELS functions to LETs.
4704 (thanks to Alexey Dejneka)
4705 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4706 that are names of constants or global variables.
4707 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4708 alien routines with docstrings.
4709 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4710 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4712 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4713 (thanks to Eric Marsden)
4714 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4715 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4716 * Bug fix: The SPARC backend can now compile functions involving
4717 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4718 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4719 to a functions expecting a PATHNAME-DESIGNATOR.
4720 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4721 lambda lists. (thanks to Alexey Dejneka)
4722 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4723 functions so that EXPORTing the name of the class doesn't cause
4724 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4725 to Antonio Martinez for reporting this)
4726 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4727 constant-folded without failing an assertion. (thanks to Einar
4728 Floystad Dorum for reporting this)
4729 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4730 types are now dealt with more correctly by the compiler.
4731 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4732 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4733 behaviour analogous to RENAME-FILE. This puts its behaviour more
4734 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4736 * The fasl file version number has changed again. (because of the
4737 bug fix involving the names of PCL MAKE-INSTANCE functions)
4739 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4740 * bug fix: Floating point exceptions are treated much more
4741 consistently on the x86/Linux and PPC/Linux platforms.
4742 * Array initialization with :INITIAL-ELEMENT is now much faster for
4743 cases when the compiler cannot open code the array creation, but
4744 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4745 array accesses have also seen a speed increase.
4746 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4747 specified. (This was at the root of some bad interactions between
4748 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4750 * bug fix: Internal error arguments for undefined functions are now
4751 computed correctly on the PPC/Linux platform.
4752 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4753 Raymond Toy's patch for CMU CL)
4754 * Support for the Solaris 9 operating environment has been included
4755 (thanks to Daniel Merritt)
4756 * A very ugly but hopefully complete draft of the missing FFI chapter
4757 of the manual has been created by reformatting the corresponding
4758 CMU CL manual chapter into (currently very ugly and incoherent)
4759 DocBook and bringing it up to date for SBCL behavior. Thus, the
4760 manual is now essentially complete, at least by my extreme
4761 once-and-only-once standards, whereby it's acceptable to refer to
4762 the doc strings of SB-EXT functions as the primary documentation.
4763 * The fasl file version number has changed again, due to cleanup of
4764 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4765 is no longer a static symbol.)
4767 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4768 * SBCL now builds with OpenMCL (version 0.12) as the
4769 cross-compilation host; also, more progress has been made toward
4770 bootstrapping under CLISP.
4771 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4773 * bug 158 fixed: The compiler can now deal with integer loop
4774 increments different from 1; fixing this turned out also to fix
4776 * bug 169 fixed: no more bogus warnings about using lexical bindings
4777 despite the presence of perfectly good SPECIAL declarations (thanks
4778 to David Lichteblau)
4779 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4780 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4781 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4783 * bug 180 fixed: Method combination specifications no longer ignore
4784 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4785 * bug fix: Structure type predicate functions now check their argument
4786 count as they should.
4787 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4788 correctly. (thanks to Pierre Mai)
4789 * minor incompatible change: The --noprogrammer option is deprecated
4790 in favor of the new --disable-debugger option, which is very similar.
4791 (The major difference is that it takes effect at a slightly different
4792 time at startup, causing handling of errors in --sysinit and
4793 --userinit files will be affected differently.) The
4794 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4795 been added to allow this functionality to be controlled from ordinary
4796 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4797 maintainers, who might want to run non-interactive scripts to
4798 build SBCL cores which will later be used interactively.)
4799 * minor incompatible change: The LOAD function no longer, when given
4800 a wild pathname to load, loads all files matching that pathname.
4801 Instead, an error of type FILE-ERROR is signalled.
4803 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4804 * bug 147 fixed: The compiler preserves its block link/count
4805 invariants more correctly now so that it doesn't crash. (thanks
4807 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4809 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4810 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4811 no-value-for-this-character as NIL (as specified by ANSI).
4812 * HOST-NAMESTRING on physical pathnames now returns a string that is
4813 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4814 (thanks to Christophe Rhodes)
4815 * The Alpha port handles icache flushing more correctly. (thanks to
4817 * More progress has been made toward bootstrapping under CLISP. (thanks
4818 to Christophe Rhodes)
4819 * The fasl file format has changed again, because dynamic loading
4820 on OpenBSD (which has non-ELF object files) motivated some cleanups
4821 in the way that foreign symbols are transformed and passed around.
4822 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4823 is no longer treated as whitespace by the reader, but instead as
4824 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4825 |A
\7fB|, instead of A as it used to.
4827 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4828 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4829 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4830 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4831 this as of 0.7.1.45, but was left out of the previous news section
4832 (thanks to Dan Barlow)
4833 * SBCL now runs on the Solaris operating system on SPARC architectures
4834 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4835 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4836 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4837 * SPARC backend cleanups, allowing builds of cores optimized for V8
4838 and V9 SPARCS, and also emission of code targeted to a particular
4839 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4841 * SBCL is closer to bootstrapping under CLISP, thanks to various
4842 fixes by Christophe Rhodes.
4843 * The fasl file format has changed again, to allow the compiler's
4844 INFO database to support symbol macros.
4845 * The user manual (in doc/) is formatted into HTML more nicely.
4846 (thanks to coreythomas)
4847 * The system is smarter about SUBTYPEP relationships, especially
4848 those involving NOT types (including types such as ATOM which are
4849 represented internally using NOT types). Thus SUBTYPEP is less
4850 likely to return (VALUES NIL NIL) in general, and in particular
4851 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4853 * The fasl file format has changed again, because the internal
4854 representation of types now includes a new slot to support the new
4855 SUBTYPEP-of-NOT-types logic.
4856 * (not a change in the main branch of SBCL, but a related prototype
4857 which can hopefully be merged into the main branch of SBCL in the
4858 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4859 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4860 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4861 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4862 dispatch macro character combinations. (thanks to Alexey Dejneka)
4863 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4864 that superficially look like logical namestrings correctly.
4865 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4867 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4868 default supplied-p) for &optional and &key arguments. (thanks to
4871 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4872 * incompatible change: The compiler is now less aggressive about
4873 tail call optimization, doing it only when (> SPACE DEBUG) or
4874 (> SPEED DEBUG). (This is an incompatible change because there are
4875 programs which relied on the old CMU-CL-style behavior to optimize
4876 away their unbounded recursion which will now die of stack overflow.)
4877 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4878 for non-GENCGC systems has been increased to 20M (since that
4879 seems much closer to the likely performance optimum for modern
4880 systems than the old 4M value was)
4881 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4882 and *DEBUG-PRINT-LEVEL*
4883 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4884 of CMU CL's support for SPARC, and various endianness and other
4885 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4886 * new syntactic sugar for the Unix command line: --load foo.bar is now
4887 an alternate notation for --eval '(load "foo.bar")'.
4889 ** The system now detects stack overflow and handles it gracefully,
4890 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4891 optimization settings. (This is a good thing in general, and
4892 its introduction in this version should be particularly timely
4893 for anyone whose code fails because of suppression of tail
4895 ** The system now hunts for the C variable "environ" in a more
4896 devious way, to avoid segfaults when the C library version differs
4897 between compile time and run time. (thanks to Christophe Rhodes)
4898 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4899 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4900 ** The compiler no longer issues bogus style warnings for undefined
4901 classes in the same source file as the DEFCLASSes which defined
4902 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4904 ** fixes in CONDITION class precedence list for undefined function
4905 errors (thanks to Alexei Dejneka)
4906 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4907 correctly. (thanks to Dan Barlow)
4908 ** portability fixes aiming at bootstrapping under CLISP (thanks
4909 to Dave McDonald and Christophe Rhodes)
4910 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4911 ** fixes in type translation and and type inference (thanks to
4913 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4914 ** various fixes in the new ports (thanks to Dan Barlow)
4915 * several changes related to debugging:
4916 ** suppression of tail recursion, as noted above
4917 ** stack overflow detection, as noted above
4918 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4919 is now the default. (For some time encapsulation has been more
4920 reliable than the breakpoint-based :ENCAPSULATE NIL
4921 implementation, at least on X86 systems; and I just noticed that
4922 encapsulation also seems closer to the spirit of the ANSI
4925 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4927 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4928 up properly again. (There was a packaging bug in 0.7.0 which
4929 left their definitions in SB-SYS::LOAD-FOREIGN and
4930 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4931 vital for most things which interface to C-level interfaces,
4932 like extensions working with sockets or databases or
4933 Perl-compatible regexes or whatever, and the need to fix
4934 this bug is the main reason that 0.7.1 was released so
4936 ** DEFGENERIC is now choosier about the methods it redefines, so that
4937 reLOADing a previously-LOADed file containing DEFGENERICs does
4938 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4939 cycle now works as it should. (thanks to Alexey Dejneka)
4940 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4941 fixed by Christophe Rhodes. (He actually submitted this patch
4942 months ago, and I delayed until after 0.7.0.)
4943 ** Bug 111 (internal compiler confusion about runtime checks on
4944 FUNCTION types) was fixed by Alexey Dejneka.
4945 * Some internal cleanups (getting rid of variables which aren't
4946 needed now that the byte interpreter is gone) caused the fasl
4947 file format number to change again.
4949 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4950 * major incompatible change: The default fasl file extension, i.e. the
4951 default extension for files produced by COMPILE-FILE, has changed
4952 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4954 ** There are many changes in the implementation of the compiler.
4955 SBCL is now essentially a compiler-only implementation of ANSI
4956 Common Lisp. EVAL still "interprets" a few special cases, but
4957 almost all the interesting cases are handled by creating
4958 a LAMBDA expression, calling COMPILE on it, then calling
4959 FUNCALL on the result.
4960 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4961 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4962 Since the code is newer, there might still be some new bugs
4963 (though not as many as before Martin Atzmueller's fixes:-). But
4964 the new code is substantially simpler and clearer, and hopefully
4965 any remaining bugs will be simpler, less fundamental, and more
4966 fixable then the bugs in the old code.
4967 ** The revised compiler is still a little unsteady on its feet.
4969 *** The debugging information it produces (particularly the names
4970 of FUNCTION objects) is sometimes much less useful than what
4971 the old compiler produced.
4972 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4973 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4974 within a MACROLET) has been temporarily weakened.
4975 ** There are new compiler optimizations for various functions:
4976 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4977 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4978 *** the math functions TRUNCATE, FLOOR, and CEILING
4979 *** the function-of-all-trades COERCE
4980 Mostly these should be transparent, but there's one
4981 potentially-annoying problem (bug 117): when the compiler
4982 inline-expands a function and does type analysis on the result,
4983 it can create control paths which have type mismatches, and
4984 when it can't prove that those control paths aren't taken,
4985 it will issue WARNINGs about the type mismatches. This is
4986 a particular problem in practice for the new sequence functions.
4987 It's not clear how this should be fixed, and for now, a
4988 workaround is given in the entry for 117 in the BUGS file.
4989 ** (Because of the interaction between the two previous items --
4990 occasional inlining problems and new inline expansions -- some
4991 of the new sequence function optimizations won't really kick in
4992 completely until debugging information, and then inlining, are
4993 straightened out in some future version.)
4994 * minor incompatible changes:
4995 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4996 DIRECTORY no longer implicitly promotes NIL slots of its
4997 pathname argument to :WILD. In particular, when you ask for the
4998 contents of a directory (which you used to be able to do without
4999 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5000 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5001 ** changes in behavior that ANSI explicitly defines to be
5002 implementation dependent:
5003 *** The new compiler-only implementation still conforms with ANSI,
5004 but acts a little different than before. Besides the obvious
5005 changes in performance tradeoffs (that the cost per form passed
5006 to EVAL has gone up, and the cost per form executed by EVAL
5007 has gone down), the behavior of the system changes a little
5008 because there are no longer any interpreted function objects.
5009 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5010 e.g. doing COMPILE on the output of interactive DEFUN is
5012 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5014 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5015 has changed from (:CL) to NIL.
5016 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5017 e.g. #\Newline and #\Tab, don't have names specified in the
5018 ANSI Common Lisp standard, is now based on their ASCII symbolic
5019 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5020 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5021 are no longer used for output.
5022 ** changes in internal implementation constants:
5023 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5024 4 million. (If your application spends a lot of time GCing and
5025 you have a lot of RAM, you might want to experiment with
5026 increasing it even more.)
5027 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5028 However, almost all old code should still continue to work without
5029 immediate update, as SB-C-CALL is now a (deprecated) nickname
5031 ** Old operator names in the style DEF-FOO are now deprecated in
5032 favor of new corresponding names DEFINE-FOO, for consistency with
5033 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5034 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5035 internal symbols, but a few supported extensions like
5036 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5037 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5038 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5039 etc. as you get deeper into recursive calls to the debugger
5040 command loop, instead of the old "5]", "5]]", "5]]]"
5041 sequence. (I was motivated to do this when squabbles between
5042 ILISP and SBCL left me very deeply nested in the debugger. In the
5043 short term, this change will probably provoke more ILISP/SBCL
5044 squabbles, but hopefully it will be an improvement in the long run.)
5045 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5046 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5047 function, since declaiming return types involving aliens is
5048 (1) annoyingly messy to do by hand and (2) vital to efficient
5049 compilation of code which calls such functions.
5050 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5051 longer reexported by the SB-EXT package. They're solely useful
5052 for alien code, so it seems more logical that you should get
5053 them from the SB-ALIEN package, not in SB-EXT.
5054 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5055 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5056 features. Instead, the code that they used to control is always
5057 built into the system.
5058 * many other bug fixes
5059 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5060 advantage of the new EVAL-WHEN stuff and to clean them up in
5061 general, and they are now more ANSI-compliant in a number of
5062 ways. Martin Atzmueller is responsible for a lot of this.
5063 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5065 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5066 *** correct ERROR type for various file operations
5067 *** some fixes for Lisp streams
5068 *** DEFMETHOD syntax checking
5069 *** changing old weird representation of debug information as
5070 strings (which, among their other deficiencies, don't transform
5071 correctly when you rename packages, and don't change their
5072 print representation when you change things like *PACKAGE*
5073 and *PRINT-LENGTH*) to symbols and lists of symbols
5074 He also made several improvements and fixed several bugs in DESCRIBE.
5075 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5077 *** misbehavior of WRITE-STRING/WRITE-LINE
5078 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5079 and several other LOOP problems as well
5080 *** DIRECTORY when similar filenames are present
5081 *** DEFGENERIC with :METHOD options
5082 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5083 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5084 *** argument ordering in FIND with :TEST option
5085 *** mishandled package designator argument in APROPOS-LIST
5086 *** various problems in the backquote readmacro
5087 *** a bug in APROPOS
5088 *** probably some others that I'm not describing very well here,
5089 since the CVS log documents them by reference to sbcl-devel
5090 messages, and the SourceForge archives aren't working well.:-(
5091 ** Dan Barlow improved the Alpha port (and is making progress on the
5092 PPC port, for those of you who think different).
5093 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5094 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5095 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5096 continues to work on the SPARC port (for those of you in a position
5097 to look down upon our little PC-compatible boxes from a great height).
5098 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5099 and uses that copy, rather than the current dynamic value, when
5100 it's trying to decide whether to truncate output. Thus e.g.
5101 (let ((*print-lines* 50))
5102 (pprint-logical-block (stream nil)
5104 (let ((*print-lines* 8))
5105 (print (aref possiblybigthings i) stream)))))
5106 should now truncate the logical block only at 50 lines, instead of
5107 often truncating it at 8 lines, as it did before.
5108 * The doc/cmucl/ directory, containing old CMU CL documentation
5109 from the time of the fork, is no longer part of the base system.
5110 SourceForge has shut down its anonymous FTP service, and with it
5111 my original plan for distributing the old CMU CL documentation
5112 there. For now, if you need these files you can download an old
5113 SBCL source release and extract them from it.
5114 * The fasl file version number changed again, for dozens of reasons,
5115 some of which are apparent above.
5117 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5118 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5119 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5120 patch, so that DISASSEMBLE output is much nicer.
5121 * The code in the SB-PROFILE package now seems reasonably stable.
5122 I still haven't decided what the final interface should look like
5123 (I'd like PROFILE to interact cleanly with TRACE, since both
5124 facilities use function encapsulation) but if you have a need
5125 for profiling now, you can probably use it successfully with
5126 the current CMU-CL-style interface.
5127 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5128 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5129 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5130 link now returns the dangling link itself, and for similar
5131 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5132 link itself. (In these cases the old code signalled an error and
5133 looped endlessly, respectively.) Thus, DIRECTORY now works even
5134 in the presence of dangling and cyclic symbolic links.
5135 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5136 is now a supported extension again, since the consensus on
5137 sbcl-devel was that it can be useful for ordinary development
5138 work, not just for debugging SBCL itself.
5139 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5140 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5141 that currently-defined functions might be redefined later with
5142 different return types.
5143 * Hash tables can be printed readably, as inspired by CMU CL code
5144 of Eric Marsden and SBCL code of Martin Atzmueller.
5145 * better error handling in CLOS method combination, thanks to
5146 Martin Atzmueller porting Pierre Mai's CMU CL patches
5147 * more overflow fixes for >16Mbyte I/O buffers
5148 * A bug in READ has been fixed, so that now a single Ctrl-D
5149 character suffices to cause end-of-file on character streams.
5150 In particular, now you only need one Ctrl-D at the command
5151 line (not two) to exit SBCL.
5152 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5154 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5155 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5156 does the right thing.
5157 * The implementation of some type tests, especially for CONDITION
5158 types, is now tidier and maybe faster, due to CMU CL code
5159 originally by Douglas Crosher, ported by Martin Atzmueller.
5160 * Some math functions have been fixed, and there are new
5161 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5162 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5163 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5164 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5165 likely to be built into sbcl-0.7.0.)
5166 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5167 CL, ported to SBCL by Martin Atzmueller)
5168 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5169 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5170 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5171 * There's a new slam.sh hack to shorten the edit/compile/debug
5172 cycle for low-level changes to SBCL itself, and a new
5173 :SB-AFTER-XC-CORE target feature to control the generation of
5174 the after-xc.core file needed by slam.sh.
5175 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5176 COMPILE-FILE is no longer supported, so that now every function
5177 gets an entry point, so that block compilation looks a little
5178 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5179 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5180 returns the number of bytes consed since the system started,
5181 rather than the number consed since the first time the function
5182 was called. (The new definition parallels ANSI functions like
5183 CL:GET-INTERNAL-RUN-TIME.)
5184 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5185 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5186 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5187 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5188 * Fasl file version numbers are now independent of the target CPU,
5189 since historically most system changes which required version
5190 number changes have affected all CPUs equally. Similarly,
5191 the byte fasl file version is now equal to the ordinary
5194 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5195 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5196 is no longer recognized. I apologize for this, because it was
5197 listed in SB-EXT as a supported extension, but I found that
5198 its existing behavior was poorly specified, as well as incorrectly
5199 specified, and it looked like too much of a mess to straighten it
5200 out. I have enough on my hands trying to get ANSI stuff to work..
5201 * many patches ported from CMU CL by Martin Atzmueller, with
5202 half a dozen bug fixes in pretty-printing and the debugger, and
5203 half a dozen others elsewhere
5204 * fixed bug 13: Floating point infinities are now supported again.
5205 They might still be a little bit flaky, but thanks to bug reports
5206 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5207 as flaky as they were.
5208 * The --noprogrammer command line option is now supported. (Its
5209 behavior is slightly different in detail from what the old man
5210 page claimed it would do, but it's still appropriate under the
5211 same circumstances that the man page talks about.)
5212 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5213 are now supported, and enabled by default. Thus, the compiler can
5214 handle many floating point and complex operations much less
5215 inefficiently. (Thus e.g. you can implement a complex FFT
5217 * The compiler now detects type mismatches between DECLAIM FTYPE
5218 and DEFUN better, and implements CHECK-TYPE more correctly, and
5219 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5220 thanks to patches from Martin Atzmueller.
5221 * various fixes to make the cross-compiler more portable to
5222 ANSI-conforming-but-different cross-compilation hosts (notably
5223 Lispworks for Windows, following bug reports from Arthur Lemmens)
5224 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5225 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5226 fixed thanks to Pierre Mai's CMU CL patches.
5227 * fixes to keep the system from overflowing internal counters when
5228 it tries to use i/o buffers larger than 16M bytes
5229 * fixed bug 45a: Various internal functions required to support
5230 complex special functions have been merged from CMU CL sources.
5231 (When I was first setting up SBCL, I misunderstood a compile-time
5232 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5233 * improved support for type intersection and union, fixing bug 12
5234 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5235 more obscure bugs as well
5236 * some steps toward byte-compiling non-performance-critical
5237 parts of the system, courtesy of patches from Martin Atzmueller
5238 * Christophe Rhodes has made some debian packages of sbcl at
5239 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5240 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5241 stable, but are nonetheless usable. When he's ready, I'd be happy
5242 to add them to the SourceForge "File Releases" section. (And if
5243 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5244 * new fasl file format version number (because of changes in
5245 internal representation of (OR ..) types to accommodate the new
5246 support for (AND ..) types, among other things)
5248 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5249 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5251 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5253 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5254 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5255 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5256 * DESCRIBE now works on structure objects again.
5257 * Most function call argument type mismatches are now handled as
5258 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5259 know whether the function will be redefined before the call is
5260 executed. (The compiler could flag local calls with full WARNINGs,
5261 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5262 it doesn't keep track of enough information to know whether calls
5263 are local in this sense.)
5264 * Compiler output is now more verbose, with messages truncated
5265 later than before. (There should be some supported way for users
5266 to override the default verbosity, but I haven't decided how to
5267 provide it yet, so this behavior is still controlled by the internal
5268 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5269 src/compiler/ir1util.lisp.)
5270 * Fasl file format version numbers have increased again, because
5271 support for the Gray streams extension changes the layout of the
5272 system's STREAM objects.
5273 * The Gray subclassable streams extension now works, thanks to a
5274 patch from Martin Atzmueller.
5275 * The full LOAD-FOREIGN extension (not just the primitive
5276 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5277 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5278 but like most other programs, it defaults to copying the Unix
5279 environment from the original process instead of starting the
5280 new process in an empty environment.
5281 * Extensions which manipulate the Unix environment now support
5282 an :ENVIRONMENT keyword option which doesn't smash case or
5283 do other bad things. The CMU-CL-style :ENV option is retained
5284 for porting convenience.
5285 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5286 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5288 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5290 * A patch from Martin Atzmueller seems to have solved the SIGINT
5291 problem, and as far as we know, signal-handling now works cleanly.
5292 (If you find any new bugs, please report them!)
5293 * The system no longer defaults Lisp source file names to types
5294 ".l", ".cl", or ".lsp", but only to ".lisp".
5295 * The compiler no longer uses special default file extensions for
5296 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5297 seems to expect a single default extension for all compiled code,
5298 and there's no compelling reason to try to stretch the standard
5299 to allow two different extensions.) Instead, byte-compiled files
5300 default to the same extension as native-compiled files.
5301 * Fasl file format version numbers have increased again, because
5302 a rearrangement of internal implementation packages made some
5303 dumped symbols in old fasl files unreadable in new cores.
5304 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5305 many fewer weird special cases.
5306 * Bug #17 (differing COMPILE-FILE behavior between logical and
5307 physical pathnames) has been fixed, and some related misbehavior too,
5308 thanks to a patch from Martin Atzmueller.
5309 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5310 by Tim Moore, ported to SBCL by Martin Atzmueller.
5311 * Martin Atzmueller fixed several filesystem-related problems,
5312 including bug #36, in part by porting CMU CL patches, which were
5313 written in part by Paul Werkowski.
5314 * More compiler warnings in src/runtime/ are gone, thanks to
5315 more patches from Martin Atzmueller.
5316 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5319 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5321 * DESCRIBE now works on CONDITION objects.
5322 * The debugger now handles errors which arise when trying to print
5323 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5325 * The build system now uses an additional file, customize-target-features.lisp,
5326 to allow local modifications to the target *FEATURES* list. (The point of
5327 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5328 debugging features enabled, without having to worry about propagating it
5329 into everyone's system when I do a "cvs update".) When no
5330 customize-target-features.lisp file exists, the target *FEATURES* list
5331 should be constructed the same way as before.
5332 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5333 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5334 warn about behavior which is undefined under the ANSI spec. Note: This
5335 is specified by ANSI, but it's not very popular with programmers.
5336 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5337 macro in the SBCL sources for an example of a workaround which you
5338 might use to make portable ANSI-standard code which does what you want.
5339 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5340 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5341 when it's used as a non-toplevel form. (This is required in order
5342 to implement the DEFCONSTANT-EQX macro.)
5343 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5344 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5345 funny things, due to bugs in the implementation of EVAL-WHEN
5346 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5347 non-toplevel DEFCONSTANTs are uncommon.)
5348 * The core file version number and fasl file version number have been
5349 incremented, because the old noncompliant DEFCONSTANT behavior involved
5350 calling functions which no longer exist, and because I also took the
5351 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5352 * fixed bug 1 (error handling before read-eval-print loop starts), and
5353 redid debugger restarts and related debugger commands somewhat while
5355 ** The QUIT debugger command is gone, since it did something
5356 rather different than the SB-EXT:QUIT command, and since it never
5357 worked properly outside the main toplevel read/eval/print loop.
5358 Invoking the new TOPLEVEL restart provides the same functionality.
5359 ** The GO debugger command is also gone, since you can just invoke
5360 the CONTINUE restart directly instead.
5361 ** The TOP debugger command is also gone, since it's redundant with the
5362 FRAME 0 command, and since it interfered with abbreviations for the
5364 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5366 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5367 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5368 some porting work by Martin Atzmueller)
5369 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5370 with a boatload of patches which he ported to SBCL. Now that those
5372 ** The system tries to make sure that its low-priority messages
5373 are prefixed by semicolons, to help people who like to use
5374 syntax highlighting in their ILISP buffer. (This patch
5375 was originally due to Raymond Toy.)
5376 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5377 patches originally written by Raymond Toy.
5378 ** The compiler understands coercion between single-value and
5379 multiple-VALUES type expressions better, getting rid of some very
5380 weird behavior, thanks to patches originally by Robert MacLachlan
5381 and Douglas Crosher.
5382 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5383 lambda lists, thanks to a patch originally by Pierre Mai.
5384 ** The system no longer bogusly warns about "abbreviated type
5386 ** The compiler gets less confused by inlining and RETURN-FROM,
5387 thanks to some patches originally by Tim Moore.
5388 ** The system no longer hangs when dumping circular lists to fasl
5389 files, thanks to a patch originally from Douglas Crosher.
5390 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5391 undefined function error.
5392 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5393 in structure slot initforms) for now, documented workaround instead:-|
5394 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5395 * fixed bug 5: added stubs for various Gray stream functions called
5396 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5397 installed, at least appropriate type errors are generated
5398 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5399 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5400 consistently in DEFMETHOD forms.
5401 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5402 it doesn't seem to affect SBCL after all
5403 * The C runtime system now builds with better optimization and many
5404 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5406 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5408 * The system is now under CVS at SourceForge (instead of the
5409 CVS repository on my home machine).
5410 * The new signal handling code has been tweaked to treat register
5411 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5412 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5413 downstream, e.g. in debug-int.lisp, has implicit dependencies
5414 on the unsignedness of integer representation of machine words,
5415 and that caused the system to bomb out with infinite regress
5416 when trying to recover from type errors involving signed values,
5417 e.g. (BUTLAST '(1 2 3) -1).)
5418 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5419 (This was one of the bugs Peter Van Eynde reported back in July.)
5420 * The system now uses code inspired by Colin Walters' O(N)
5421 implementation of MAP (from the cmucl-imp@cons.org mailing
5422 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5423 inline the MAP operation, and there is more than one
5424 sequence argument to the MAP call (so that it can't just
5425 do ETYPECASE once and for all based on the type of the
5426 single sequence argument). (The old non-inline implementation
5427 of the general M-argument sequence-of-length-N case required
5428 O(M*N*N) time when any of the sequence arguments were LISTs.)
5429 * The QUIT :UNIX-CODE keyword argument has been renamed to
5430 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5431 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5433 * Raymond Wiker's patches to port dynamic loading from Linux to
5434 FreeBSD have been added.
5435 * The BUGS file is now more nearly up to date, thanks in large part
5436 to Martin Atzmueller's review of it.
5437 * The debugger now flushes standard output streams before it begins
5438 its output ("debugger invoked" and so forth).
5439 * The core version number and fasl file version number have both
5440 been incremented, because of incompatible changes in the layout
5442 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5443 used to not be called for a saved Lisp image.)
5444 * Martin Atzmueller's version of a patch to fix a compiler crash,
5445 as posted on sbcl-devel 13 September 2000, has been installed.
5446 * Instead of installing Martin Atzmueller's patch for the
5447 compiler transform for SUBSEQ, I deleted the compiler transform,
5448 and transforms for some similar consing operations.
5449 * A bug in signal handling which kept TRACE from working on OpenBSD
5451 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5452 away by constant folding
5453 * The system now defines its address space constants in one place
5454 (in the Lisp sources), and propagates them automatically elsewhere
5455 (through GENESIS and the sbcl.h file). Therefore, patching the
5456 address map is less unnecessarily tedious and error-prone. The
5457 Lisp names of address space constants have also been systematized.
5458 * CVS tags like dollar-Header-dollar have been removed from
5459 the sources, because they have never saved me trouble and
5460 they've been source of trouble working with patches and other
5461 diff-related operations.
5462 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5463 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5465 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5467 * The system has been ported to OpenBSD.
5468 * The system now compiles with a simple "sh make.sh" on the systems
5469 that it's supported on. I.e., now you no longer need to tweak
5470 text in the target-features.lisp-expr and symlinks in src/runtime/
5471 by hand, the make.sh takes care of it for you.
5472 * The system is no longer so grossly inefficient when compiling code
5473 involving vectors implemented as general (not simple) vectors (VECTOR T),
5474 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5475 which dares to use the various sequence functions on non-simple
5476 vectors, takes less of a performance hit.
5477 * There is now a primitive type predicate VECTOR-T-P
5478 to test for the (VECTOR T) type, so that e.g.
5479 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5480 can now be compiled with some semblance of efficiency. (The old code
5481 turned the type declaration into a full call to %TYPEP at runtime!)
5482 * AREF on (VECTOR T) is still not fast, since it's still compiled
5483 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5484 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5485 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5486 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5487 without making full calls to SUBTYPEP at runtime.
5488 (Some analogous efficiency issues for non-simple vectors specialized to
5489 element types other than T, or for non-simple multidimensional arrays,
5490 have not been addressed. They could almost certainly be handled the
5491 same way if anyone is motivated to do so.)
5492 * The changes in array handling break binary compatibility, so
5493 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5494 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5495 instead of (VALUES T T).
5496 * By following the instructions that Dan Barlow posted to sbcl-devel
5497 on 2 July 2000, I was able to enable primitive dynamic object
5498 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5499 functionality is not implemented (since it calls ld to resolve
5500 library references automatically, requiring RUN-PROGRAM for its
5501 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5502 try to resolve library references) is now supported.
5503 * The system now flushes the standard output streams when it terminates,
5504 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5505 them at several other probably-convenient times, e.g. in each pass of
5506 the toplevel read-eval-print loop, and after evaluating a form given
5507 as an "--eval" command-line option. (These changes were motivated by a
5508 discussion of stream flushing issues on cmucl-imp in August 2000.)
5509 * The source transform for TYPEP of array types no longer assumes
5510 that an array whose element type is a not-yet-defined type
5511 is implemented as an array of T, but instead punts, so that the
5512 type will be interpreted at runtime.
5513 * There is now some support for cross-compiling in make.sh: each of
5514 the phases of make.sh has its own script. (This should be transparent
5515 to people doing ordinary, non-cross-compile builds.)
5516 * Since my laptop doesn't have hundreds of megabytes of memory like
5517 my desktop machine, I became more motivated to do some items on
5518 my to-do list in order to reduce the size of the system a little:
5519 ** Arrange for various needed-only-at-cold-init things to be
5520 uninterned after cold init. To support this, those things have
5521 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5522 symbols with such names are now uninterned after cold init).
5523 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5524 fasl files for cold load.
5525 ** Remove the old compiler structure pooling code (which used to
5526 be conditional on the target feature :SB-ALLOC) completely.
5527 ** Redo the representation of some data in cold init to be more compact.
5528 (I also looked into supporting byte compiled code at bootstrap time,
5529 which would probably reduce the size of the system a lot, but that
5530 looked too complicated, so I punted for now.)
5531 * The maximum signal nesting depth in the src/runtime/ support code has
5532 been reduced from 4096 to 256. (I don't know any reason for the very
5533 large old value. If the new smaller value turns out to break something,
5534 I'll probably just bump it back up.)
5535 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5537 * Many, many bugs reported by Peter Van Eynde have been added to
5538 the BUGS list; some have even been fixed.
5539 * While enabling dynamic object file loading, I tried to make the
5540 code easier to understand, renaming various functions and variables
5541 with less ambiguous names, and changing some function calling
5542 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5543 * While trying to figure out how to do the OpenBSD port, I tried to
5544 clean up some of the code in src/runtime/. In particular, I dropped
5545 support for non-POSIX signal handling, added various comments,
5546 tweaked the code to reduce the number of compilation warnings, and
5547 renamed some files to increase consistency.
5548 * To support the new automatic configuration functionality in make.sh,
5549 the source file target-features.lisp-expr has been replaced with the
5550 source file base-target-features.lisp-expr and the machine-generated
5551 file local-target-features.lisp-expr.
5552 * fixed a stupid quoting error in make.sh so that using CMU CL
5553 "lisp -batch" as cross-compilation host works again
5555 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5557 * DESCRIBE no longer tries to call itself recursively to describe
5558 bound/fbound values, so that it no longer fails on symbols which are
5559 bound to themselves (like keywords, T, and NIL).
5560 * DESCRIBE now works on generic functions.
5561 * The printer now prints less-screwed-up representations of closures
5562 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5563 * A private symbol is used instead of the :EMPTY keyword previously
5564 used to mark empty slots in hash tables. Thus
5565 (DEFVAR *HT* (MAKE-HASH-TABLE))
5566 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5567 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5568 now does what ANSI says that it should. (You can still get
5569 similar noncompliant behavior if bang on the hash table
5570 implementation with all the symbols you get back from
5571 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5572 This breaks binary compatibility, since tests for equality to
5573 :EMPTY are wired into things like the macroexpansion of
5574 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5576 * There's now a minimal placeholder implementation for CL:STEP,
5577 as required by ANSI.
5578 * An obscure bug in the interaction of the normal compiler, the byte
5579 compiler, inlining, and structure predicates has been patched
5580 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5581 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5583 * Missing ordinary arguments in a macro call are now detected even
5584 when the macro lambda list contains &KEY or &REST.
5585 * The debugger no longer complains about encountering the top of the
5586 stack when you type "FRAME 0" to explicitly instruct it to go to
5587 the top of the stack. And it now prints the frame you request even
5588 if it's the current frame (instead of saying "You are here.").
5589 * As specified by ANSI, the system now always prints keywords
5590 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5592 * The default initial SIZE of HASH-TABLEs is now smaller.
5593 * Type information from CLOS class dispatch is now propagated
5594 into DEFMETHOD bodies, so that e.g.
5595 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5597 is now basically equivalent to
5598 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5599 (DECLARE (TYPE SINGLE-FLOAT X))
5601 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5602 operation, without having to do run-time type dispatch.
5603 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5604 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5605 * Since I don't seem to be making big file reorganizations very often
5606 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5607 is overflowing my ability to conveniently back them up), I've finally
5608 checked the system into CVS. (The CVS repository is on my home system,
5609 not at SourceForge -- putting it on SourceForge might come later.)
5610 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5611 high-level GC-NOTIFY-FOO functions send their output. (There's
5612 still very little control of where low-level verbose GC functions
5613 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5614 less than it used to -- the GC-NOTIFY-FOO functions are now under
5615 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5616 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5617 in only one place in the source code, and propagates it automatically
5618 everywhere that it's needed. Thus e.g. when I bump the version from
5619 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5620 * The C source files now include boilerplate legalese and documentation
5621 at the head of each file (just as the Lisp source files already did).
5622 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5623 to his page will be replaced with a link to his new CLiki service.
5625 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5627 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5628 * The build process now looks for GNU make under the default name "gmake",
5629 instead of "make" as it used to. If GNU make is not available as "gmake"
5630 on your system, you can change this default behavior by setting the
5631 GNUMAKE environment variable.
5632 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5633 can build without error under CMU CL.
5635 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5637 * There is now a partial SBCL user manual (with some new text and some
5638 text cribbed from the CMU CL manual).
5639 * The beginnings of a profiler have been added (starting with the
5640 CMU CL profiler and simplifying and cleaning up). Eventually the
5641 main interface should be through the TRACE macro, but for now,
5642 it's still accessed through vaguely CMU-CL-style functions and macros
5643 exported from the package SB-PROFILE.
5644 * Some problems left over from porting CMU CL to the new
5645 cross-compilation bootstrap process have been cleaned up:
5646 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5647 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5648 part when getting rid of the compiler *BACKEND* stuff.)
5649 ** The value of *NULL-TYPE* was screwed up, because it was
5650 being initialized before the type system knew the final
5651 definition of the 'NULL type. This screwed up several key
5652 optimizations in the compiler, causing inefficiency in all sorts
5653 of places. (I found it because I wanted to understand why
5654 GET-INTERNAL-RUN-TIME was consing.)
5655 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5656 PROCLAIM FTYPE information. Unfortunately this broke binary
5657 compatibility again, since now the forms output by DEFGENERIC
5658 to refer to functions which didn't exist in 0.6.3.
5659 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5660 can use the new (as of 0.6.3) transform for SOME into MAP into
5662 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5663 values to (INTEGER 0 1000000), so that the time code will no longer
5664 occasionally get blown up by Linux returning 1000000 microseconds
5665 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5666 its output conform to the ANSI spec. (Alas, this makes its output
5667 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5668 * A full call to MAP NIL with a single sequence argument no longer conses.
5669 * fixes to problems pointed out by Martin Atzmueller:
5670 * The manual page no longer talks about multiprocessing as though
5671 it were currently supported.
5672 * The ILISP support patches have been removed from the distribution,
5673 because as of version 5.10.1, ILISP now supports SBCL without us
5674 having to maintain patches.
5675 * added a modified version of Raymond Toy's recent CMU CL patch for
5676 EQUALP comparison of HASH-TABLE
5678 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5680 * The system still can't cross-compile itself with
5681 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5682 entails), but at least it can compile more of itself that way
5683 than it used to be able to, and various buglets which were uncovered
5684 by trying to cross-compile itself that way have now been fixed.
5685 * This release breaks binary compatibility again. This time
5686 at least I've incremented the FASL file format version to 2, so that the
5687 problem can be detected reliably instead of just causing weird errors.
5688 * various new style warnings:
5689 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5690 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5691 ** using the lexical binding of a variable named in the *FOO* style
5692 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5693 as specified by ANSI.
5694 * *RANDOM-STATE* is no longer automatically initialized from
5695 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5696 default behavior of the system is to repeat its behavior every time
5697 it's run. If you'd like to change this behavior, you can always
5698 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5699 old convention there was no comparably easy way to get the system to
5700 repeat its behavior every time it was run.
5701 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5702 FTYPE declarations has been removed, in favor of their ANSI
5703 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5704 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5705 the types of their sequence arguments can be determined at compile time.
5706 This is done through a new open code expansion for MAP which eliminates
5707 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5708 argument types can be determined at compile time.
5709 * The optimizer now transforms COERCE into an identity operation when it
5710 can prove that the coerced object is already of the correct type. (This
5711 can be a win for machine generated code, including the output of other
5712 optimization transforms, such as the MAP transform above.)
5713 * Credit information has been moved from source file headers into CREDITS.
5714 * Source file headers have been made more standard.
5715 * The CASE macro now compiles without complaining even when it has
5718 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5720 * (Note that the way that the PCL macroexpansions were rewritten
5721 to accommodate the change in DEFGENERIC below breaks binary
5722 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5723 not run under sbcl-0.6.2. Once we get out of alpha releases,
5724 i.e. hit release 1.0.0, we'll probably try to maintain binary
5725 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5726 and sbcl-1.4.4. Until then, however, it might be fairly common
5727 for maintenance releases to break binary compatibility.)
5728 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5730 * The reporting of unhandled signals has been changed to print some
5731 explanatory text as well as the report form. (Previously only
5732 the report form was printed.)
5733 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5734 it defines, so that the compiler no longer issues undefined function
5735 warnings for compiled-but-not-yet-loaded generic functions.
5736 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5737 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5738 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5739 section of the ANSI spec are supported.
5740 * The "" nickname for the "KEYWORD" package has been removed.
5741 The reader still handles symbol tokens which begin with a package marker
5742 as keywords, but it doesn't expose its mechanism for doing so in the
5743 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5744 * The system now issues STYLE-WARNINGs for contradictory TYPE
5745 proclamations. (Warnings for contradictory FTYPE proclamations would
5746 be nice too, but those can't be done usefully unless the type system
5747 is made smarter about FUNCTION types.)
5748 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5749 systematized, so that "*target-*.lisp is supposed to exist only on the
5750 target and imply that there's a related file which exists on the
5751 host, and *host-*.lisp is supposed to exist only on the host and imply
5752 that there's a related file which exists on the target. This involves a
5753 lot of renaming. Hopefully the acute confusion caused by the renaming
5754 will be justified by the reduction in chronic confusion..
5755 ** runtime-type.lisp -> early-target-type.lisp
5756 ** target-type.lisp -> late-target-type.lisp
5757 ** early-host-format.lisp -> early-format.lisp
5758 ** late-host-format.lisp -> late-format.lisp
5759 ** host-error.lisp -> misc-error.lisp
5760 ** early-error.lisp -> early-target-error.lisp
5761 ** late-error.lisp -> late-target-error.lisp
5762 ** host-defboot.lisp -> early-defboot.lisp
5763 ** code/misc.lisp -> code/target-misc.lisp
5764 ** code/host-misc.lisp -> code/misc.lisp
5765 ** code/numbers.lisp -> code/target-numbers.lisp
5766 ** code/early-numbers.lisp -> numbers.lisp
5767 ** early-host-type.lisp -> early-type.lisp
5768 ** late-host-type.lisp -> late-type.lisp
5769 ** host-typep.lisp -> typep.lisp
5770 ** load.lisp -> target-load.lisp
5771 ** host-load.lisp -> load.lisp
5772 ** host-disassem.lisp -> disassem.lisp
5773 ** host-insts.lisp -> insts.lisp
5774 ** byte-comp.lisp -> target-byte-comp.lisp
5775 ** host-byte-comp.lisp -> byte-comp.lisp
5776 ** host-signal.lisp -> signal.lisp
5777 ** host-defstruct.lisp -> defstruct.lisp
5778 ** late-target-type.lisp -> deftypes-for-target.lisp
5779 Furthermore, several other previously target-only files foo.lisp (e.g.
5780 hash-table.lisp and random.lisp) have been split into a target-and-host
5781 foo.lisp file and a target-only target-foo.lisp file, with their key type
5782 definitions in the target-and-host part, so that the cross-compiler will
5783 know more about target types.
5784 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5785 gone away. In their place are various *BACKEND-FOO* variables
5786 corresponding to the slots of the old structure.
5787 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5788 into the target SBCL has been fixed.
5789 * The chill.lisp system for loading cold code into a running SBCL
5791 * Support for the CMU CL "scavenger hook" extension has been removed.
5792 (It was undocumented and unused in the CMU CL sources that SBCL was
5793 derived from, and stale in sbcl-0.6.1.)
5794 * Various errors in the cross-compiler type system were detected
5795 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5796 (enabling various consistency checks). Many of them were fixed,
5797 but some hard problems remain, so the compiler is back to
5798 running without *TYPE-SYSTEM-INITIALIZED* for now.
5799 * As part of the cross-compiler type system cleanup, I implemented
5800 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5801 * I have started adding UNCROSS calls throughout the type system
5802 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5803 on cross-compiler input files will be able to go away, and various
5805 * CONSTANTP now returns true for quoted forms (as explicitly required
5808 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5810 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5811 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5812 (MAKE-LIST -1). In the longer term, it ought to become true
5813 that declarations are assertions even at SAFETY 1. For now, it's not
5814 quite true even at SAFETY 3, but it's at least more nearly true..
5815 (Note that this change seems to increases the size of the system by
5816 O(5%) and to decrease the speed of the compiler by 20% or more.)
5817 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5818 for the problem of printing dozens of lines of distracting information
5819 about low-level system machinery as part of the top stack frame
5820 on entry to the debugger when an undefined function was called.
5821 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5822 is not reset to COMMON-LISP-USER.
5823 * Compilation of stuff related to dyncount.lisp has been made conditional
5824 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5825 smaller. The various dyncount-related symbols have been moved into
5826 a new "SB-DYNCOUNT" package.
5827 * tty-inspect.lisp has been renamed to inspect.lisp.
5828 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5829 feature has gone away. (When we eventually port to other flavors of
5830 libc and/or Unix, we'll try to make the differences between flavors
5831 invisible at the user level.)
5832 * Various other *FEATURES* tags, and/or their associated conditionals,
5833 have been removed if obsolescent, or given better documentation, or
5834 sometimes given more-mnemonic names.
5836 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5838 * tidied up "make.sh" script
5839 * tidied up system directory structure
5840 * better "clean.sh" behavior
5841 * added doc/FOR-CMUCL-DEVELOPERS
5842 * many many small tweaks to output format, e.g. removing possibly-confusing
5843 trailing #\. character in DESCRIBE-INSTANCE
5844 * (EQUALP #\A 'A) no longer signals an error.
5845 * new hashing code, including EQUALP hashing
5846 * tidied up Lisp initialization and toplevel
5847 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5848 * command line argument processing
5849 * added POSIX-GETENV function to deal with Unix-ish environment variables
5850 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5851 terminating SBCL on EOF
5852 * non-verbose GC by default
5853 * There is no more "sbcl" shell script; the sbcl file is now the C
5854 runtime executable (just like CMU CL).
5855 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5857 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5858 symbol and package information as Lisp native symbol and package objects
5859 instead of strings naming symbols and strings naming packages. This way,
5860 whenever packages are renamed (as in warm init), debug information is
5861 transformed along with everything else.
5862 * tweaked the optimization policy declarations which control the building
5863 of SBCL itself. Now, among other things, the system no longer saves
5864 source location debugging information. (This helps two problems at once
5865 by reducing SBCL size and by keeping SBCL from trying to look for its
5866 sources -- which may not exist -- when reporting errors.)
5867 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5868 debugging and testing purposes
5869 * cleaned up printing, making the printer call PRINT-OBJECT for
5870 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5871 methods, giving nearly-ANSI behavior
5872 * converted almost all special variables to use *FOO* naming convention
5873 * deleted PARSE-TIME functionality, since it can be done portably
5874 * moved some files out of cold init into warm init
5875 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5877 * regularized formatting of source files
5878 * added an install.sh script
5879 * fixed ridiculous memory usage of cross-compiler by making
5880 compiler/alloc.lisp not try to do pooling unless it can hook
5881 itself into the GC of the cross-compilation host. Now the system
5882 builds nicely on my old laptop.
5883 * added :SB-ALLOC in target-features.lisp-expr
5884 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5885 was not implemented)
5886 * re-did condition handling and note reporting in the compiler. Notes
5887 are no longer handled by signalling conditions. Style warnings
5888 and warnings are handled more correctly and reported in such a way
5889 that it's easy to find one or the other in your output (so that you
5890 can e.g. figure out which of many problems caused COMPILE-FILE to
5892 * changed the severity of several compiler warnings from full WARNING
5893 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5894 compiler note reporting so that it doesn't use the condition system
5895 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5896 COMPILE-FILE command)
5897 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5898 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5899 no longer supported, since their implementation was deeply intertwingled
5900 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5901 * removed bogus "support" for compiler macros named (SETF FOO), and
5902 removed the compiler macro for SETF INFO (but only after making a fool
5903 of myself on the cmucl-imp mailing list by posting a bogus patch for
5904 DEFINE-COMPILER-MACRO..)
5905 * Compiled files containing forms which have side effects on the Lisp
5906 reader (such as DEFPACKAGE forms) are now handled more correctly.
5907 (Compiler queuing of top level lambdas has been suppressed by setting
5908 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5909 * deleted various currently-unused source files, e.g. gengc.lisp. They
5910 may be added back at some point e.g. when porting to other architectures,
5911 but until they are it's distracting to distribute them and to try to
5913 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5914 there were so many of them they're just distractions, and UNCROSS is
5915 known to be able to handle the current sources
5916 * moved PROFILE functionality into TRACE, so that it will be clear
5917 how the wrapping and unwrapping of functions when you profile them
5918 interacts with the wrapping and unwrapping of functions when you
5919 trace them. (Actually, the functionality isn't there yet, but at least
5920 the interface specification is there. Hopefully, the functionality will
5921 arrive with some future maintenance release.)
5922 * removed host-oops.lisp
5923 * changed signature of QUIT function to allow UNIX-CODE argument
5924 * fixed READ-SEQUENCE bug
5925 * tweaked verbose GC output so that it looks more like the progress
5926 output that ANSI specifies for functions like LOAD
5927 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5928 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob