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 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
27 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
28 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
30 * bug fix: interrupts arriving due to CL:OPEN caused an error.
31 * bug fix: overeager character buffering could cause input to block
32 spuriously when reading from a pipe (lp#643686)
33 * bug fix: more efficient timer expiry should avoid starvation on systems
34 where number of SIGALRMs per second is restricted. (lp#375515)
35 * improvements to the Windows port:
36 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
37 on Windows. (thanks to Kalyanov Dmitry)
38 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
40 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
41 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
42 * bug fix: compile-times no longer scale linearly with the size of
43 quoted lists in source-code. (lp#654289)
44 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
45 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
47 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
48 an error for eg. STRUCTURE. (lp#458015)
49 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
50 (lp#613871, thanks to Roman Marynchak)
51 * bug fix: more reliable &REST list type derivation. (lp#655203)
52 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
53 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
54 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
55 also declared NOTINLINE. (lp#655581)
56 * bug fix: the compiler could attempt to emit constant left shifts of
57 greater value than n-word-bits. (lp#309063)
58 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
59 type information for the function being set. (lp#659220)
60 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
61 containing self-calls were recompiled with a new signature, and failed
62 to warn when a self-call using the old signature was left in. (lp#655126)
63 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
64 :DEFAULT when the default external had character size other than 8 bits.
66 * bug fix: derived types of functions in the same file were implicitly
67 trusted, leading to potential heap corruption when those function were
68 defined incompatibly. (lp#657499)
69 * bug fix: existing ASDF source registries are ignored when building
71 * bug fix: short-form DEFSETF checks that the second argument is a symbol
72 (lp#655824, thanks to Roman Marynchak)
73 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
74 package-lock violation was detected. (lp#660752)
75 * bug fix: the system can store different docstrings for a single function
76 under different names. (lp#661631, regression from 1.0.29.24)
77 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
79 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
80 of specified length could confuse the type derivation in unsafe code.
83 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
84 * incompatible change: FD-STREAMS no longer participate in the serve-event
85 event-loop by default. (lp#316072)
86 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
87 affects streams from CL:OPEN.
88 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
89 default, but this is liable to change: applications needing serve-event
90 for socket streams should explicitly request it using :SERVE-EVENTS T
92 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
94 * enhancement: CLOS effective method functions and defclass slot typechecking
95 function now have debug names for use in backtraces and profiles.
96 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
98 * enhancement: symbols are printed using fully qualified names in several
99 error and warning messages which are often associated with package
100 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
101 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
102 thanks to Andrew Golding)
103 * bug fix: reading /proc files on Linux works. (lp#425199)
104 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
106 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
107 breaking code that tried to write the value of a printer control variable.
108 (lp#581564, thanks to Stas Boukarev)
109 * bug fix: WRITE compiler macro did not handle output stream designators
110 correctly. (lp#598374, thanks to Stas Boukarev)
111 * bug fix: better availability of names of foreign functions in backtraces
112 on Linux. (lp#626962, thanks to Stas Boukarev)
113 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
114 lp#627581, thanks to Josh Elsasser and Jim Wise)
115 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
116 thanks to Josh Elsasser)
117 * bug fix: using aliases for builtin classes as defmethod specializers
118 without adding DEFTYPEs for them works. (lp#618387)
119 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
121 * bug fix: legally dynamic-extent lists and vectors used as
122 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
123 * bug fix: inline-expansion creating references to dead lambda-variables
124 (lp#454681, thanks to Alexey Dejneka)
125 * bug fix: better error message for bogus numerical arguments to RANDOM.
126 (lp#598986, thanks to Stas Boukarev)
127 * bug fix: the compiler occasionally inlined references from incompatible
128 environments occurs. (lp#308951)
129 * bug fix: the compiler threw an error when trying to compile a local
130 function (labels or flet) known to take a specialized complex argument.
131 (not in launchpad, reported by sykopomp in #lispgames)
132 * bug fix: package-locks failed to protect against compile-time effects of
133 DEFUN when the symbol previously had a macro definition. (lp#576637)
134 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
135 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
136 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
137 * bug fix: evaluation in debugger REPL works using the global context when
138 in frames that do not have sufficient debug information.
139 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
141 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
143 * bug fix: interrupt taking longer than the requested period caused SLEEP
144 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
146 changes in sbcl-1.0.42 relative to sbcl-1.0.41
148 ** Cross-compilation host is now specified to make.sh using
149 command-line argument --xc-host=<command> instead of a positional
150 argument. (thanks to Daniel Herring)
151 ** Install location can be specified to make.sh using command-line
152 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
153 * optimization: The default implementation of
154 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
155 * enhancement: Explicit memory barrier operations are now available for use
156 by multithreaded code. See documentation for details.
157 * enhancement: Experimental support for threading on Linux/PPC.
158 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
159 * bug fix: EXPT signals an error if first argument is a zero and second
160 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
161 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
162 (lp#576594, thanks to Roman Marynchak)
163 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
164 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
166 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
167 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
168 cached, leading to many fewer expensive calls to
169 COMPUTE-APPLICABLE-METHODS.
170 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
171 CLASS argument, search for and call an appropriate optimized ctor function
173 * bug fix: WRITE always returns the correct value.
175 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
176 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
177 * bug fix: Name conflicts between symbols passed as arguments to a single
178 call to IMPORT no longer add multiple symbols with the same name to the
179 package (detectable via DO-SYMBOLS).
180 * bug fix: support building without the dlshim on darwin x86 and x86-64
182 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
184 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
185 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
187 * bug fix: linkage-table entries on PPC now no longer overflow their
188 space allocation (potentially causing crashes if they are written out
190 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
191 platforms, preventing the GC from seeing stale pointers on the control
192 stack in subsequent GCs (which would, and does, break invariants).
193 * bug fix: 32-bit unicode external formats now work on big-endian systems.
194 * bug fix: Literal characters with code points greater than about 32767
195 now work on PPC UNICODE builds.
196 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
197 high order bits are explicitly cleared out. In some contrived situations,
198 this could lead to wrong results in mixed real/complex float arithmetic.
199 * bug fix: Fix function/macro redefinition warnings when building with
200 clisp. (lp#576787, thanks to Josh Elsasser)
201 * new platform: experimental support for ppc/openbsd (thanks to Josh
203 * bug fix: Floating-point traps now work on ppc/linux.
205 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
206 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
207 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
208 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
209 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
210 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
211 SB-THREAD:GRAB-MUTEX.
212 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
213 contain additional data structures and tools for concurrent programming;
214 at the moment it contains a lock-free queue, and a lock-free mailbox
216 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
217 GET-MUTEX but takes &key rather than &optional parameters. Also added
218 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
220 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
221 SB-THREAD:WAIT-ON-SEMAPHORE.
222 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
224 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
225 conditions to defer the deadline for forever.
226 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
228 * enhancement: errors from NO-APPLICABLE-METHOD and
229 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
230 generic function call.
231 * enhancement: SB-BSD-SOCKET improvements
232 ** sockets and socket streams now have a more informative printed
233 representation based on the corresponding SOCKET-NAME and
235 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
237 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
238 CL:CLOSE when appropriate, and no longer disassociates the stream
239 from the socket if close failed. (lp#543951)
240 * improvements to the instrumenting profiler
241 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
242 ** optimization: counters no longer use locks for the overflow mode.
243 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
244 incurred an off-by-one miscount.
245 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
246 * enhancement: improved DEFMETHOD pretty-printing.
247 * enhancement: perform range reduction when arguments are too large for
248 x87's transcendentals (instead of returning 0). (lp#327192)
249 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
250 some of CL-PPCRE's macros. (lp#570079)
251 * enhancement: our machine code is slightly less hostile to valgrind on
253 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
254 to Robert Swindells and Aleksej Saushev)
255 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
256 * bug fix: a rare case of startup-time page table corruption.
257 * bug fix: a semaphore with multiple waiters and some of them unwinding due
258 to timeouts could be left in an inconsistent state.
259 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
260 * bug fix: misoptimization of multiplication by one in
261 (SB-C::FLOAT-ACCURACY 0) policies.
262 * bug fix: miscounts in SB-PROFILE.
263 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
264 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
265 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
266 up itself" (March 2010) for further details.
267 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
268 against length of the list if the element is found before the specified
269 END is reached. (thanks to Alec Berryman, lp#554385)
270 * bug fix: errors signalled during package graph modification no longer
271 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
272 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
273 :SB-DOC feature. (lp#552564)
274 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
275 * bug fix: more robust runtime executable path detection. (lp#375549)
276 * bug fix: GCD always returns positive values. (lp#413680)
277 * bug fix: Converting division to multiplication by reciprocal handles
279 * bug fix: We were too eager in eliding range reduction tests on x87.
280 The maximal magnitude is 2^63, not 2^64.
281 * bug fix: Transforms for TRUNCATE don't die when the result is completely
283 * bug fix: Maybe restore buildability on Alpha.
284 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
286 * bug fix: RANDOM-STATE can be printed readably again.
287 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
288 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
289 types) could result in type mismatches during compilation.
291 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
292 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
293 stack frame thrown from.
294 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
295 compiler optimization qualities inside dynamic extent of its body.
296 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
297 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
299 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
300 constraint propgation, allowing better compilation eg. when used to
301 access structures with WITH-SLOTS. (lp#520366)
302 * optimization: the compiler is now more aware of the type of the underlying
303 storage vector for multidimensional simple arrays resulting in better code
304 for accessing such arrays.
305 * optimization: passing NIL as the environment argument to TYPEP no longer
306 inhibits optimizing it. (lp#309788)
307 * optimization: more efficient register usage when handling single-float
308 arguments on x86-64. (thanks to Lutz Euler)
309 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
310 pre-allocated temporary vectors. (lp#496249)
311 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
312 in :INITIAL-CONTENTS. (lp#523612)
313 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
314 functions. (lp#524707)
315 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
316 WITH-SLOTS usages during compilation.
317 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
318 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
319 all x86oid platforms with :UD2-BREAKPOINTS target feature.
320 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
321 instruction (tested on x86oid linux with ud2-breakpoints).
322 * bug fix: slam.sh now works on win32.
323 * bug fix: better differences of numeric types. (lp#309124)
324 * bug fix: arrays declared intersection and union types can have their
325 upgraded element type derived. (lp#316078)
326 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
327 threads started during profiling. (lp#472499)
328 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
330 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
331 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
332 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
333 values instead of signaling an error. (lp#309093)
334 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
336 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
337 declarations (lp#497321)
338 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
339 and failed to detect circular lists (lp#452008)
340 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
342 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
343 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
344 due to it, so that handlers can run.
345 * bug fix: reparsing undefined types if they have become defined since
347 * bug fix: missing &REST type in a proclamation for a function with both
348 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
349 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
350 expanded calls (lp#542174)
351 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
352 than just at toplevel form.
354 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
355 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
356 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
357 but work on type specifiers.
358 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
359 to name a type specifier.
360 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
361 specifier is valid where "valid" basically means "would be accepted as
362 second argument of TYPEP".
363 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
364 returns the function's declared, or derived FTYPE.
365 * new feature: SB-POSIX now supports accessing the d_ino member of
366 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
367 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
368 provide for seeding a RANDOM-STATE object with user-provided data or
369 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
370 attempt to initialize the returned state from the operating system's
371 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
372 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
373 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
374 * bug fix: Fix grammar and style issues for the docstrings of
375 printer-related variables and functions. (Thanks to mon_key; launchpad
377 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
379 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
380 in a row even though a handler defered the deadline long into the
382 * bug fix: A deadline handler was run without interrupts enabled for a
383 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
384 in infinitely spinning, non-killable threads.
385 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
386 before reaching the erring stack frame.
387 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
388 real power. (launchpad bug lp#525949)
389 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
390 GENCGC platforms. (launchpad bug lp#529014)
391 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
392 (launchpad bug lp#525916)
393 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
394 (Thanks to Robert Goldman)
396 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
397 * optimization: ROUND with a single single-float or double-float argument
398 is properly inlined when possible.
399 * optimization: Slightly better code is generated for integer<->float
400 conversions and for single-float<->double-float conversions on x86-64.
401 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
402 code for 32-bit and 64-bit rotations on x86-64.
403 * bug fix: The install script changes the ownership of directories as well
404 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
405 launchpad bug lp#508485)
406 * bug fix: TRUNCATE with a single single-float or double-float argument is
407 properly inlined when possible. (launchpad bug lp#489388)
408 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
409 no longer causes a compiler error on x86 and ppc.
410 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
411 always relative to *READTABLE* rather than the passed argument.
413 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
414 * minor incompatible change: threading support is now enabled by default
416 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
418 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
419 are now caught and reported just like errors during macroexpansion.
420 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
421 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
422 * enhancement: ASDF systems can now depends on SB-QUEUE.
423 * fixes and improvements related to Unicode and external formats:
424 ** bug fix: error handling and restart usage in the ucs-2 external format
426 ** there is now an implementation of the ucs-4 external format.
427 ** the utf-16 and utf-32 external formats are supported.
428 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
429 in the environment. setenv() and unsetenv() are also provided. (reported by
430 Fare Rideau; launchpad bug lp#460455)
431 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
432 loading. This ensures sensible errors for .FASL files from other
433 implementations on case-insensitive filesystems. (reported by Willem
434 Broekema; launchpad bug lp#489417)
435 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
436 Willem Broekema; launchpad bug lp#489698).
437 * bug fix: some minor code rearrangements to reenable warning-free building
438 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
439 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
441 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
444 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
445 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
446 * improvement: support O_LARGEFILE access to files larger than 2GB on
447 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
448 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
449 definitions for methods specializing on the passed class itself.
450 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
451 definitions for methods specializing on the passed class itself, or on
453 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
454 about itself during the build (e.g. for M-? in Slime), if this flag is
455 enabled in customize-target-features.lisp. This will increase the core
456 size by about 5-6mb, though, so it's mostly interesting to SBCL
458 * new feature: various GENCGC tuning parameters have been experimentally
459 documented and exported from SB-EXT. See documentation for details.
460 * fixes and improvements related to Unicode and external formats:
461 ** the Unicode character database has been upgraded to the
462 Unicode 5.2 standard, giving names and properties to a number of new
463 characters, and providing a few extra characters with case
465 ** improvement: restarts for providing replacement input/output on coding
466 errors for fd-stream external formats.
467 ** improvement: where :<encoding> is a keyword corresponding to an
468 external format the system supports, it is now possible to specify
469 (:<encoding> :replacement <character>) as an external format which will
470 automatically substitute <character> on encoding or decoding errors for
471 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
473 ** improvement: the file streams underlying the standard streams (such as
474 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
475 which uses the replacement mechanism to handle encoding errors,
476 preventing various infinite error chains and unrecoverable I/O
478 ** minor incompatible change: the utf-8 external format now correctly
479 refuses to encode Lisp characters in the surrogate range (char-codes
480 between #xd800 and #xdfff).
481 ** fix a typo preventing conversion of strings into octet vectors
482 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
484 ** fix a bug in the octet multibyte handling of decoding errors and the
485 USE-VALUE restart. (launchpad bug lp#314939)
486 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
487 restart on fd-stream decoding errors.
488 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
489 error is near the end of file.
490 ** fix a double-error case in unibyte octet conversions, when the first
491 use of USE-VALUE is ignored.
492 ** fix bugs in handling of undefined code points in unibyte encodings.
493 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
494 streams after an UNREAD-CHAR.
495 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
496 object is allocated in a boxed region of dynamic space.
497 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
498 fork with multiple Lisp threads running is made, instead of going
499 ahead with unpredictable consequences. (reported by Leslie Polzer)
500 * bug fix: uses of slot accessors on specialized method parameters within
501 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
502 error while finalizing the class. This fix may cause classes with slot
503 accessors to be finalized later than previously. (reported by Lars Rune
504 Nøstdal; launchpad bug lp#473699)
505 * bug fix: restore buildability on the MIPS platform. (regression from
506 1.0.30.38, reported by Samium Gromoff)
507 * bug fix: inspecting closures is less likely to fail with a type error.
508 * bug fix: no timer starvation when setting the system clock back.
509 (launchpad bug lp#460283)
510 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
511 standard pprint dispatch table as specified by CLHS.
512 * bug fix: give CLISP a hint about a type declaration to enable it to build
513 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
515 * bug fix: correctly dump literal objects in defaulting forms of arglists.
516 (reported by Attila Lendvai; launchpad bug lp#310132)
517 * bug fix: distinguish in type specifiers between arrays that might be
518 complex and arrays that are definitely complex. (launchpad bug lp#309129)
519 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
520 type. (reported by Levente Mészáros; launchpad bug lp#485972)
521 * bug fix: setting the value of a symbol-macro within a method in the
522 presence of type declarations works properly again. (reported by Iban
523 Hatchondo; launchpad bug lp#485019)
525 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
526 * optimization: faster FIND and POSITION on strings of unknown element type
527 in high SPEED policies. (thanks to Karol Swietlicki)
528 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
530 * improvement: better error signalling for bogus parameter specializer names
531 in DEFMETHOD forms (reported by Pluijzer)
532 * bug fix: DELETE-FILE once again works on logical pathnames (regression
534 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
536 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
537 removes previous default initargs (reported by Lars Rune Nøstdal and
539 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
540 lambda-lists. (reported by Peter Seibel)
541 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
542 correctly when starting from an executable core without saved runtime
543 options (reported by Faré Rideau, thanks to Zach Beane)
544 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
545 an optimization note instead. (reported by Martin Cracauer)
546 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
547 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
548 new process group if it doesn't need to share stdin with the sbcl
549 process. (thanks to Leslie Polzer)
550 * bug fix: SATISFIES could be misoptimized to refer to a local function.
551 (reported by Stanislaw Halik)
553 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
554 * improvement: stack allocation is should now be possible in all nested
555 inlining cases: failure to stack allocate when equivalent code is manually
556 open coded is now considered a bug.
557 * improvements related to Unicode:
558 ** the Unicode character database has been upgraded to the
559 Unicode 5.1 standard, giving names and properties to a number of new
560 characters, and providing a few extra characters with case
562 ** the system now recognizes and produces names for Unicode Hangul
564 ** the EBCDIC-US external-format is now supported for octet operations
565 (as well as for stream operations).
566 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
567 be used to output toplevel compile-time effects into a separate .CFASL
569 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
570 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
572 * optimization: TRUNCATE on known single- and double-floats is upto 25%
574 * optimization: division of floating point numbers by constants uses
575 multiplication by reciprocal when an exact reciprocal exists.
576 * optimization: multiplication of single- and double-floats floats by
577 constant two has been optimized.
578 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
579 sufficient type information is available. (thanks to Leslie Polzer)
580 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
581 known structure objects are as efficient as defstruct generated accessors.
582 * optimization: unused vector creation can now be optimized away.
583 * improvement: ASDF systems can now depends on SB-INTROSPECT.
584 * improvement: a STYLE-WARNING is signalled when a generic function
585 clobbers an earlier FTYPE proclamation.
586 * improvement: the compiler is able to track the effective type of
587 generic function across method addition and removal even in the
588 absence of an explicit DEFGENERIC.
589 * improvement: DESCRIBE now reports on symbols naming undefined
590 but assumed or declared function as well.
591 * improvement: recompilation of systems using SB-GROVEL now works
592 (thanks to Leslie Polzer)
593 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
594 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
596 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
597 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
598 well as user defined declaration names.
599 ** VARIABLE-INFORMATION is now aware of alien variables.
600 * improvement: improved address space layout on OpenBSD (thanks to Josh
602 * improvement: pretty-printing of various Lisp forms has been improved
603 (thanks to Tobias Rittweiler)
604 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
605 unused were deleted in safe code. (reported by John Fremlin)
606 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
608 * bug fix: some out-of-line array predicates were missing (reported by
610 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
612 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
613 (thanks to Larry D'Anna)
614 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
615 as well. (reported by Josh Elsasser)
616 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
617 leading to possible attempts to delete the same file twice. See docstring
618 on DELETE-FILE for details. (reported by John Fremlin)
619 * bug fix: DELETE-FILE once again deletes the file named by the pathname
620 designator argument, rather than its truename. (reported by Luis
622 * bug fix: the low-level debugger had 32-bit assumptions and was missing
623 information about some array types. (thanks to Luis Oliveira)
624 * bug fix: moderately complex combinations of inline expansions could
625 be miscompiled if the result was declared to be dynamic extent.
626 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
627 form (+ <variable> <integer>) were miscompiled under certain
629 * bug fix: in some cases no compiler note about failure to stack allocate
630 was emitted, even if the objects were in fact heap allocated.
631 * bug fix: minor violation of "otherwise inaccessible" rule for stack
632 allocation could cause objects users might reasonably expect to
633 be heap allocated to be stack allocated.
634 * bug fix: DESCRIBE signalled an error for generic functions under
635 certain circumstances. (thanks to Leslie Polzer)
636 * bug fix: Fixed spelling of an error message.
638 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
639 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
640 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
641 of SB-THREAD:THREAD-ERROR-THREAD.
642 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
643 * new feature: docstrings for local and anonymous functions are no longer
644 discarded. (thanks to Leslie Polzer)
645 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
646 values in other threads.
647 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
648 about object allocation.
649 * optimization: division of a real float by a complex float is implemented
650 with a specialised code sequence.
651 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
652 keywords is an order of magnitude faster.
653 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
654 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
655 methods, and similarly for non-standard metaclass classes as long as there
656 are no methods additional on MAKE-INSTANCE.
657 * optimization: more efficient type-checks for FIXNUMs when the value
658 is known to be a signed word on x86 and x86-64.
659 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
660 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
662 * optimization: compiler is smarter about delegating argument type checks to
664 * optimization: several character functions are now compiled somewhat more
665 efficiently. (reported by Lynn Quam)
666 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
667 * improvement: less unsafe constant folding in floating point arithmetic,
668 especially for mixed complex/real -float operations.
669 * optimization: constant double and single floats are stored in native
670 unboxed format on x86[-64].
671 * optimization: smarter code for arithmetic operations with constant floats,
672 complex floats, or integers on x86[-64].
673 * optimization: smarter code for conjugate/multiplication of float complexes
674 and abs/negate of floats on x86-64.
675 * optimization: more efficient complex float and real float operations on
677 * improvement: complex float division is slightly more stable.
678 * improvement: DESCRIBE output has been reworked to be easier to read and
679 contains more pertinent information.
680 * improvement: failure to provide requested stack allocation compiler notes
681 provided in all cases (requested stack allocation not happening without a
682 note being issued is now considered a bug.)
683 * bug fix: SB-POSIX exports the documented types and functions
684 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
685 types. (reported by "abhi")
686 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
687 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
688 (thanks to Paul Khuong)
689 * bug fix: looping around HANDLER-CASE could silently consume stack space
690 on each iteration. (reported by "foobar")
691 * bug fix: better error signalling when calls to functions seeking elements
692 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
693 (reported by Tobias Rittweiler)
694 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
695 directory components now works as it used to. (various prolems reported by
696 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
697 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
698 (reported by Elliot Slaughter, thanks to Stas Boukarev)
699 * bug fix: bogus undefined variable warnings from fopcompiled references to
700 global variables. (thanks to Lars Rune Nøstdal)
701 * bug fix: foreign function names should now appear in backtraces on
702 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
703 * bug fix: SETF compiler macro documentation strings are not discarded
705 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
706 (thanks to Alex Plotnick)
707 * bug fix: SLEEP accepts large integer arguments, truncating them to
708 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
709 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
710 * bug fix: compiler notes for expensive slot type checks could be emitted
711 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
713 changes in sbcl-1.0.29 relative to 1.0.28:
714 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
715 https://bugs.launchpad.net/sbcl
716 Bugs can be reported directly there, or by sending email to
717 sbcl-bugs@lists.sourceforge.net
718 (no subscription required.)
719 * minor incompatible change: under weak type checking policy integer
720 types are weakened less aggressively.
721 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
722 allowed to return, which causes SBCL to quit with exit status 0. Previously
723 if the function returned with a small integer return value, that value
724 was accidentally reused as the exit status.
725 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
726 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
727 :HASH-FUNCTION argument. Refer to user manual for details.
728 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
730 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
731 microseconds since the Unix epoch on all platforms.
732 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
733 allows the compiler to safely elide boundedness checks for special
735 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
736 the symbol, prohibits both lexical and dynamic binding. This is mainly an
737 efficiency measure for threaded platforms, but also valueable in
739 * new feature: UNC pathnames are now understood by the system on Windows.
740 * optimization: the compiler uses a specialized version of FILL when the
741 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
743 * optimization: accesses to potentially non-simple arrays where element type
744 is known are 50% faster.
745 * optimization: compiler now generates faster array typechecking code.
746 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
748 * optimization: multidimensional array accesses in the absence of type
749 information regarding array rank are approximately 10% faster due to
750 open coding of ARRAY-RANK.
751 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
752 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
754 * optimization: result of call to VECTOR can now be stack allocated.
755 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
756 as long as the resulting array is one-dimensional and has a known
757 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
758 length of the list matches the known length of the vector does not
759 allocate the list as an intermediate step. Ditto for VECTOR and simple
761 * optimization: MAKE-ARRAY can now stack allocate in the presence of
762 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
763 known element type, and is known to be simple and one dimensional.
764 * improvement: SBCL now emits a compiler note where stack allocation was
765 requested but could not be provided (not in all cases, unfortunately)
766 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
767 * improvement: pretty-printing loop has been implemented properly. (thanks
768 to Tobias Rittweiler)
769 * documentation: CLOS slot typechecing policy has been documented.
770 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
771 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
772 pointer, leading to memory faults. (thanks to Bart Botta)
773 * bug fix: better floating point exception handling on x86/OpenBSD.
774 (thanks to Josh Elsasser)
775 * bug fix: exit status from QUIT when called under --script was lost
776 (reported by Hubert Kauker)
777 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
778 same implementation of FILL to initialize the array, even if a more
779 efficient one was available (reported by Stas Boukarev, thanks to
781 * bug fix: potential miscompilation of array stack allocation on x86 and
782 x86-64. (reported by Time Tossavainen)
783 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
784 result in their subforms being treated as top level forms. (reported by
786 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
787 than a machine register could leave garbage in the high bits of the
788 result register (bug 316325).
789 * bug fix: disable address space randomization Linux/x86-64 as well,
790 not just x86-64. (reported by Ken Olum)
791 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
792 generate incorrect code.
793 * bug fix: #201; type inference for CONS and ARRAY types could derive
794 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
795 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
796 could not be assigned to or bound with PROGV. (reported by Lorenz
798 * bug fix: the value of CL:- in the inspector was the previous expression
799 evaluated rather than the expression being evaluated.
800 * bug fix: constants can no longer be locally declared special.
801 * bug fix: signals delivered to threads started from foreign land (read:
802 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
803 thread by blocking all signals and resignalling.
804 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
805 from :INITFORM, if any.
807 changes in sbcl-1.0.28 relative to 1.0.27:
808 * a number of bugs in cross-compilation have been fixed, with the ultimate
809 result that building under (at least) clisp should be much more reliable.
810 * minor incompatible changes: echo-streams now propagate unread-char to the
811 underlying input stream, and no longer permit unreading more than one
813 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
814 frames, allowing for instance more reliable backtraces.
815 * improvement: the debugger REPL can now reference lexical variables
816 by name directly for code compiled with (DEBUG 3).
817 * improvement: errors from malformed declarations now have better source
818 paths associated with them. (thanks to Tobias Rittweiler)
819 * optimization: faster local calls on x86/x86-64
820 * bug fix: some error messages for out-of-bound array indexes confused the
821 index and the bound. (thanks to Stas Boukarev)
822 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
824 * bug fix: running regressions tests in shells without OSTYPE set now works.
825 (reported by Harald Hanche-Olsen)
826 * bug fix: more robust static space exhaustion signalling from
827 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
828 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
829 docstring away instead of storing it under names such as (LAMBDA (X)).
830 (reported by Leslie Polzer)
831 * bug fix: timers could go off in the wrong order, be delayed indefinitely
832 (thanks to Ole Arndt for the patch)
833 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
834 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
835 potentially-invalid effective methods in its cache.
836 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
837 instances as well (thanks to Paul Khuong)
838 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
839 SB-POSIX:WAITPID and their C equivalents.
840 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
842 changes in sbcl-1.0.27 relative to 1.0.26:
843 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
844 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
845 * improvement: the system either recovers from stack exhaustion or dies
846 properly as opposed to leaving the user uncertain of whether the handler
847 trampled on some random memory next to the stack or having to rely on
848 --lose-on-corruption (which is still a good idea to use in production
849 because stack exhaustion can happen in signal handlers which will likely
851 * bug fix: fix gc related interrupt handling bug on ppc (regression from
852 1.0.25.37, reported by Harald Hanche-Olsen)
853 * bug fix: work around signal delivery bug in darwin (regression from
854 1.0.25.44, reported by Sidney Markowitz)
855 * bug fix: fix ERROR leaking memory (reported by David Thompson)
857 changes in sbcl-1.0.26 relative to 1.0.25:
858 * incompatible change: an interruption (be it a function passed to
859 INTERRUPT-THREAD or a timer function) runs in an environment where
860 interrupts can be enabled. The interruption can use
861 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
862 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
863 potentially running out of stack. Keep in mind that in the absence
864 of WITHOUT-INTERRUPTS some potentially blocking operation such as
865 acquiring a lock can enable interrupts.
866 * incompatible change: GC-OFF and GC-ON are removed, as they were
867 always unsafe. Use WITHOUT-GCING instead.
868 * new feature: runtime option --disable-ldb
869 * new feature: runtime option --lose-on-corruption to die at the
870 slightest hint of possibly non-recoverable errors: running out of
871 memory, stack, alien stack, binding stack, encountering a memory
872 fault, etc. In the absence of --lose-on-corruption a warning is
874 * enhancement: detect binding stack exhaustion
875 * enhancement: detect alien stack exhaustion on x86/x86-64
876 * improvement: generally more stable and reliable interrupt handling
877 * improvement: there is a per thread interruption queue,
878 interruptions are executed in order of arrival
879 * improvement: a repeating timer reschedules itself when the it has
880 finished, but expiration times are spaced equally. If an
881 expiration time is in the past it will trigger after a short grace
882 period that may give a chance to other things to run.
883 * optimization: slightly faster gc on multithreaded builds
884 * optimization: faster WITHOUT-GCING
885 * bug fix: when JOIN-THREAD signals an error, do it when not holding
886 important locks so that the debugger/handler doesn't produce
887 recursive errors or deadlock.
888 * bug fix: real-time signals are not used anymore, so no more
889 hanging when the system wide real-time signal queue gets full.
890 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
892 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
893 * bug fix: fix random memory faults related to interrupts on alpha
894 * bug fix: fix random memory faults related to interrupts on sparc
895 * bug fix: fix deadlocks related to starting threads
896 * bug fix: fix deadlines on locks on futex platforms
897 * bug fix: restore errno in signal handlers
898 * bug fix: fix deadlocks related to hash tables
899 * bug fix: fix deadlocks in pcl
901 changes in sbcl-1.0.25 relative to 1.0.24:
902 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
903 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
904 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
905 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
906 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
907 better name and does not return values so stale on multiprocessor systems.
908 Also, HOLDING-MUTEX-P was added for about the only sane usage of
910 * improvement: unithread builds keep track of MUTEX-VALUE.
911 * improvement: reading from a TWO-WAY-STREAM does not touch the output
912 stream anymore making it thread safe to have a concurrent reader and
913 a writer, for instance, in a pipe.
914 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
915 arguments, making compiler-macros for SETF-functions able to inspect
916 their constant arguments.
917 * improvement: COMPILE-FILE reports times with millisecond accuracy
918 (thanks to Luis Oliveira)
919 * optimization: CHAR-CODE type derivation has been improved, making
920 TYPEP elimination on subtypes of CHARACTER work better. (reported
921 by Tobias Rittweiler, patch by Paul Khuong)
922 * bug fix: setting alien structure fields of type struct by value now
923 computes the right offset for the memory copy.
924 * bug fix: compilation problem involving inlined calls to aliens with
925 result type VOID. (reported by Ken Olum)
926 * bug fix: #235a; sequential inline expasion in different policies no
927 longer reuses the functional from the previous expansion site.
928 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
929 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
930 * bug fix: named ENUMs in multiply-referenced alien record types no longer
931 cause an implied type redefinition. Regression from 1.0.21.29.
932 * bug fix: sign-extension of small signed return values now works with C
933 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
934 * improvements to the Windows port:
935 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
936 Westfold, thanks to Rudi Schlatte)
938 changes in sbcl-1.0.24 relative to 1.0.23:
939 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
940 vector of a multidimensional SIMPLE-ARRAY.
941 * new feature: the system now signals a continuable error if standard
942 readtable modification is attempted. (thanks to Tobias Rittweiler)
943 * new feature: DIRECTORY has been extended with a non-standard keyword
944 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
945 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
946 has been robustified and documented better. (thanks to Robert Goldman)
947 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
948 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
949 * tradeoff: constant FORMAT control strings are now compiled unless
950 SPACE > SPEED (previously only when SPEED > SPACE.)
951 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
953 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
955 * bug fix: lexical type declarations are now correctly reported by
956 SB-CLTL2. (reported by Larry D'Anna)
957 * bug fix: STRING-TO-OCTETS did not handle :START properly when
958 using UTF-8 as external format. (thanks to Luis Oliveira)
959 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
960 are signalled correctly. (thanks to Stas Boukarev)
961 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
962 designator. (thanks to Tobias Rittweiler)
963 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
964 designator, and returns T instead of the function. (thanks to
966 * bug fix: direct superclasses of STANDARD-CLASS and
967 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
968 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
969 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
970 when no class with the named slot yet exists no longer causes a
971 compile-time style-warning.
972 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
973 in safe code. (reported by Didier Verna)
974 * bug fix: #430; nested structure constructors can stack allocate.
975 * bug fix: on some 64-bit platforms dynamic space size was truncated
976 to #xffff0000 bytes. (reported by Benjamin Lambert)
977 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
978 REPL unusable. (reported by Daniel Herring)
979 * bug fix: return values of READ-SEQUENCE did not take :START into
980 account on file streams, regressions since 1.0.12.22. (reported by
981 Thomas Russ, patch by Paul Khuong)
982 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
983 method specializer used to confuse permuation vector optimization.
984 * bug fix: system inserted bogus implicit type declarations for local
985 special variables in DEFMETHOD bodies.
986 * bug fix: #354; duplicated frames in backtraces due to
987 non-tail-call-optimized XEPs to functions with return type NIL
989 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
990 initializes structure object slots according to DEFSTRUCT initforms,
991 and DEFSTRUCT forms :INCLUDEind structure classes defined using
992 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
993 (reported by Bruno Haible and Stephen Wilson)
994 * bug fix: #395; fill-pointer output streams used now support
995 element-type BASE-CHAR as well.
996 * bug fix: compiler error when attempting to derive return value of
997 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
999 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1001 * bug fix: Mac OS X binaries should now be portable between Leopard
1004 changes in sbcl-1.0.23 relative to 1.0.22:
1005 * enhancement: when disassembling method functions, disassembly
1006 for the associated fast function is also produced.
1007 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1009 * optimization: printing with *PRINT-PRETTY* true is now more
1010 efficient as long as the object being printed doesn't require
1011 special handling by the pretty printer.
1012 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1013 now interact correctly with type declarations.
1014 * partial bug fix: PCL detects infinite recursion during wrapper
1015 validation. (thanks to Attila Lendvai)
1016 * bug fix: #426; nested function calls are inlined properly.
1017 Previously if FOO was an inline function, in calls of the form
1018 (FOO (FOO ...)) the outer call was not inlined.
1019 * bug fix: long long arguments passed in registers to alien
1020 functions on PowerPC Linux and NetBSD are now handled correctly
1021 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1023 changes in sbcl-1.0.22 relative to 1.0.21:
1024 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1025 for the shared object in the current directory, but passes the native
1026 namestring of the designated pathname to the operation system's shared
1027 object loading function as-it.
1028 * minor incompatible change: --disable-debugger toplevel option now takes
1029 effect before processing of initialization files and --eval or --load
1031 * new feature: new commandline argument: --script, which supports
1032 shebang lines. See documentation for details. (based on work by
1034 * new feature: SAVE-LISP-AND-DIE can save current values of
1035 --dynamic-space-size and --control-stack-size in the executable core,
1036 causing it to skip normal runtime option processing. See documentation
1037 for details. (thanks to Zach Beane)
1038 * enhancement: inoccous calls to EVAL or generic functions dispatching
1039 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1040 * enhancement: the system no longer resignals errors from --load and
1041 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1042 associated with the original error to be lost. (thanks to Ariel
1044 * enhancement: :DONT-SAVE keyword argument has been added to
1045 LOAD-SHARED-OBJECT for controlling interaction with
1046 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1047 the effects of an earlier LOAD-SHARED-OBJECT call.
1048 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1049 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1050 provided. (reported by Cedric St-Jean)
1051 * bug fix: circularity handling in the reader did not treat raw
1052 structure slots correctly. (reported by Cedric St-Jean)
1053 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1054 file descriptors when there were none.
1055 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1056 was broken. (reporteed by Willem Broekema)
1057 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1058 pathnames without a directory.
1059 * bug fix: COMPILE-FILE did not warn about undefined variable
1060 references at toplevel, and LOAD of the resulting fasl did
1061 not signal an error.
1062 * bug fix: functions with non-required arguments used to end up with
1063 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1064 * bug fix: redefining a function with non-required arguments didn't
1065 update the system's knowledge about its call signature properly.
1066 * bug fix: fixed #431; incompatible alien record type redefinitions
1067 are detected and handled. (reported by Neil Haven)
1068 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1069 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1071 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1072 after alien stack frames.
1073 * bug fix: strings passed to mk{s,d}temp lacked null termination
1075 changes in sbcl-1.0.21 relative to 1.0.20:
1076 * new feature: the compiler is able to track the effective type of a
1077 generic function across method addition and removal.
1078 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1079 appropriately typed structure slots without locking.
1080 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1081 information like those gathered by TIME using a programming-friendly
1083 * new feature: TIME reports time taken even if the form performs a
1084 non-local transfer of control.
1085 * enhancement: reduced conservativism on GENCGC platforms: on
1086 average 45% less pages pinned (measured from SBCL self build).
1087 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1088 mutate constant symbols or violate declaimed type of the symbol.
1089 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1090 sleeping on the semaphore in heavily contested semaphores.
1091 * bug fix: semaphores and condition variables were not interrupt
1093 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1094 owned by other threads anymore.
1095 * bug fix: FIND on lists called KEY outside the specified
1096 subsequence. (reported by budden)
1097 * bug fix: LOG doesn't use single-float intermediate results when
1098 given mixed integer and double-float arguments, leading to better
1099 precision. (reported by Bob Felts)
1100 * bug fix: LOG with base zero returned values of inconsistent type.
1102 changes in sbcl-1.0.20 relative to 1.0.19:
1103 * minor incompatible change: OPTIMIZE qualities
1104 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1105 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1106 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1107 * documentation: some slot access efficiency guidelines have been
1108 added to the user manual.
1109 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1110 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1111 as ASSOC and MEMEBER.
1112 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1113 to more efficient EQ-comparison versions more often.
1114 * optimization: enhanced derivation of DOLIST iteration variable type
1116 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1118 * optimization: runtime lookup of function definitions can be
1119 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1120 * optimization: compiler is able to derive the return type of
1121 (AREF (THE STRING X) Y) as being CHARACTER.
1122 * optimization: CLRHASH on empty hash-tables no longer does pointless
1123 work. (thanks to Alec Berryman)
1124 * optimization: REPLACE deftransforms don't punt when :START1 or
1126 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1127 no longer emits a code deletion note. (reported by Andrew
1129 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1130 functions with an odd number of &OPTIONAL arguments, a &REST
1131 argument, and one or more &KEY arguments at the call site.
1132 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1133 arguments appeared at call sites as well.
1134 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1135 READ-LINE &co can no longer read from them afterwards. (reported
1137 * bug fix: fixed #427: unused local aliens no longer cause compiler
1138 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1140 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1141 alien-stack leakage. (reported by Andy Hefner)
1142 * bug fix: PROGV signals an error when an attempt to violate declared
1143 type of a variable or bind a constant is made.
1144 * bug fix: SET signals an error when an attempt to violate declared
1145 type of a variable is made.
1146 * bug fix: restart computation during the execution of a restart
1147 test function no longer causes infinite recursion. (reported by
1149 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1150 signals an error. (thanks to Pierre Mai)
1151 * bug fix: EXPORT left symbol unexported in conflict situations.
1152 (thanks to Michael Weber)
1153 * bug fix: correctly handle name conflicts involving CL:NIL.
1154 (thanks to Michael Weber)
1155 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1156 conflicts arising from USEing package with conflicting symbols
1157 correctly. (thanks to Michael Weber)
1159 changes in sbcl-1.0.19 relative to 1.0.18:
1160 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1161 warnings that go otherwise unhandled will be muffled if they are
1162 of the type that's the value of this variable.
1163 * optimization: stack allocation is slightly more efficient on x86
1165 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1166 where a raw slot always is initialized using the initform whose
1167 type is not know sufficiently well a compile-time are now compiled
1168 correctly. (reported by John Morrison)
1169 * bug fix: compiler no longer makes erronous assumptions in the
1170 presence of non-foldable SATISFIES types.
1171 * bug fix: stack analysis missed cleanups of dynamic-extent
1172 arguments in non-let-converted calls to local functions.
1173 * improvements to the Windows port:
1174 ** adjusted address spaces for building on both Win32 and
1175 Win64. (thanks for John Connors)
1176 * fixed some bugs revealed by Paul Dietz' test suite:
1177 ** interval arithmetic during type derivation used inexact integer
1178 to single-float coercions.
1179 ** arithmetic operations involving large integers and single
1180 floats give the same results in compiled and interpreted code.
1181 ** deriving the result type of COERCE no longer signals an error
1182 if the derived type of the second argument is a MEMBER type
1183 containing invalid type specifiers.
1184 ** ADJOIN with constant NIL as second argument works correctly.
1185 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1187 changes in sbcl-1.0.18 relative to 1.0.17:
1188 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1189 profiles only the current thread.
1190 * minor incompatible change: changes to SYMBOL-VALUE of constants
1191 defined with DEFCONSTANT now signal an error.
1192 * enhancement: SB-SPROF now has support for wallclock profiling,
1193 and is also able to profile specific threads. REPORT output
1194 has also additional sorting options.
1195 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1197 * optimization: structure allocation has been improved
1198 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1199 ** out of line constructors are ~10% faster.
1200 ** inline constructors are ~15% faster.
1201 ** inline constructors are capable of dynamic extent allocation
1202 (generally on x86 and x86-64, in some cases on other platforms
1204 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1206 * optimization: file compiler is now able to coalesce non-circular
1207 lists, non-base strings, and bit-vectors. Additionally, constants
1208 are never referenced through SYMBOL-VALUE at runtime.
1209 * optimization: code defining methods on PRINT-OBJECT (and other
1210 generic functions in the COMMON-LISP package) now loads faster.
1211 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1213 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1214 fasl is now deleted. (reported by Attila Lendvai)
1215 * bug fix: READ-LINE always returned NIL for the last line in files.
1216 (reported by Yoshinori Tahara)
1217 * bug fix: more accurate disassembly annotations of foreign function
1218 calls. (thanks to Andy Hefner)
1219 * bug fix: trimming non-simple strings and non-string string
1220 designators when the there is nothing to trim works properly.
1221 (thanks to James Knight)
1222 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1223 (thanks to Travis Cross)
1224 * fixed some bugs revealed by Paul Dietz' test suite:
1225 ** NIL is a valid function name (regression at 1.0.13.38)
1226 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1227 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1228 fill pointers properly (regression at 1.0.12.23)
1229 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1230 displacement indices properly (regression at 1.0.12.23)
1232 changes in sbcl-1.0.17 relative to 1.0.16:
1233 * temporary regression: user code can no longer allocate closure
1234 variable storage on stack, due to bug 419 without explicitly
1235 requesting it. Please consult sbcl-devel for advice if you need to
1236 use this feature in the meanwhile.
1237 * new feature: runtime argument --control-stack-size can be used to
1238 adjust thread default control stack size.
1239 * enhancement: improved TIME output
1240 ** all times are reported using the measured accuracy (milliseconds
1241 for real and GC times, microseconds for everything else.)
1242 ** processor cycle counts on x86 and x86-64.
1243 ** interpreted forms are counted for both evaluator modes.
1244 ** number of lambdas converted by the compiler is reported.
1245 ** CPU percentage report (computed from real and total run time.)
1246 ** more comprehensive run time reporting, using a condenced format
1247 ** interperted form, lambda, and page fault counts are omitted
1249 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1251 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1252 * optimization: two argument forms of LAST are upto ~10% faster
1253 in normal SPEED policies.
1254 * optimization: NCONC no longer needs to heap cons its &REST list
1255 in normal SPEED policies.
1256 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1257 to Sidney Markowitz)
1258 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1259 regression since 1.0.9.1. (thanks to Eric Marsden)
1260 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1261 since 1.0.15.36. (thanks to Paul Khuong)
1262 * bug fix: LAST when always returned the whole list when given a bignum
1263 as the second argument.
1264 * bug fix: dynamic extent allocation of nested lists and vectors
1265 could leak to otherwise accessible parts.
1266 * bug fix: invalid optimization of heap-allocated alien variable
1268 * bug fix: fasl header checking is less vulnerable to different
1269 platform word lengths.
1270 * bug fix: more correct assembler syntax for GNU binutils
1271 2.18.50.0.4 support. (thanks to Marijn Schouten)
1272 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1274 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1275 declarations) successfully. (reported by Attila Lendvai)
1277 changes in sbcl-1.0.16 relative to 1.0.15:
1278 * minor incompatible change: revert the changes to sb-posix's error
1279 signaling added in 1.0.14.
1280 * minor incompatible change: change PROBE-FILE back to returning
1281 NIL whenever we can't get a truename, as was the case before 1.0.14.
1282 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1283 inherits from ERROR instead of just CONDITION.
1284 * new feature: SB-INTROSPECT can provide source locations for instances
1285 as well. (thanks to Tobias Rittweiler)
1286 * optimization: binding special variables now generates smaller code
1287 on threaded platforms.
1288 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1289 and cases where no :TEST is given but the compiler can infer that
1290 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1291 * optimization: better LOGNOT on fixnums.
1292 * optimization: modular arithmetic for a particular requested width
1293 is implemented using a tagged representation unless a better
1294 representation is available.
1295 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1296 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1297 for wellformedness and returns a specialized vector. (reported by
1298 Francois-Rene Rideau)
1299 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1300 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1301 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1302 unscheduling timer at the same time as another timer fires.
1303 * bug fix: don't reschedule timers for dead threads.
1304 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1305 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1306 bogus errors if select() was interrupted.
1307 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1309 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1310 * enhancement: cleaner backtraces for interactive interrupts, as
1311 well as other cases where the interesting frames used to be
1312 obscured by interrupt handling frames.
1313 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1314 now supported, and tracing a whole package using (TRACE "FOO") now
1315 traces SETF-functions as well.
1316 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1317 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1318 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1319 * unreadably printed representation of hash-tables now includes
1321 * bug fix: partially fixed #188: type propagation from assignments
1322 is now more efficient.
1323 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1324 'DOUBLE-FLOAT) are not flushable.
1325 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1326 full address of the object, and none of the tag bits.
1327 * bug fix: readably printing hash-tables now respects other printer
1328 control variables. (reported by Cedric St-Jean)
1329 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1330 keyword with MAKE-HASH-TABLE.
1331 * bug fix: export SB-POSIX:MKSTEMP.
1332 * bug fix: SORT was not interrupt safe.
1333 * bug fix: XREF accounts for the last node of each basic-block as
1335 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1336 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1337 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1338 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1339 create obsolete instances in the case of redefinition or
1340 obsoletion of a superclass. (thanks to Andy Hefner)
1341 * bug fix: Support for the Alpha architecture has been revived; it had
1342 suffered somewhat from lack of maintenance since sbcl-1.0.
1343 * improvements to the Windows port:
1344 ** The system detects the codepage to use at startup, instead of
1345 using the value from the saved core. (thanks to Kei Suzuki)
1347 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1348 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1349 (see documentation for details.)
1350 * revived support for OpenBSD (contributed by Josh Elsasser)
1351 * partially fixed bug #108: ROOM no longer suffers from occasional
1352 (AVER (SAP= CURRENT END)) failures.
1353 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1354 bodies no longer cause a WARNING to be signalled. (reported by
1356 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1357 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1358 the bug in TRUNCATE.) (reported by Michael Weber)
1359 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1360 no samples. (reported by Andy Hefner)
1361 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1362 no longer appear as (NIL ...) frames in backtraces.
1363 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1364 is now actually exported from SB-EXT as documented. (reported by
1366 * bug fix: sb-aclrepl now correctly understands how to inspect
1367 single-floats on 64-bit platforms where single-floats are not boxed.
1368 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1369 yet been finalized. (reported by Levente Meszaros)
1370 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1371 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1372 SBCL-specific optimize qualities.
1374 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1375 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1376 an executable in the search path, and does so in the child
1377 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1378 been removed; it can be found in the CVS history, for somebody who
1379 needs that search behavior (see the manual).
1380 * minor incompatible change: compiler policy re. weakening type
1381 checks has changed: now type checks are weakened only if SAFETY < 2
1383 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1384 unparsing of directory pathnames as files. Analogously,
1385 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1386 filename to parse into a directory pathname.
1387 * enhancement: implicit generic function creation now signals a
1388 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1389 users can bind handlers for and muffle around calls to LOAD.
1390 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1391 to be used (using the default stream external format), and allows
1392 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1393 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1394 strings and vectors whose element-type or simplicity is not fully
1395 known at compile-time.
1396 * optimization: STRING-TRIM and related functions no longer allocate
1397 a new string when no trimming needs to be performed. These functions
1398 are also faster than before when the input string has been declared
1400 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1401 * optimization: READ-LINE is significantly faster for files containing
1403 * optimization: non-open coded uses of character comparison operators
1404 (e.g. char=) no longer cons when called with more than one parameter
1405 on platforms supporting dynamic-extent allocation.
1406 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1407 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1408 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1410 * bug fix: some sequence functions elided bounds checking when
1412 * bug fix: too liberal weakening of union-type checks when SPEED >
1414 * bug fix: more bogus fixnum declarations in ROOM implementation
1417 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1418 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1419 :SYNCHRONIZED argument, which makes the hash-table safe for
1420 concurrent accesses (but not iteration.) See also:
1421 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1422 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1423 * optimization: CONCATENATE on strings is an order of magnitude faster
1424 in code compiled with (> SPEED SPACE).
1425 * optimization: SUBSEQ is ~50% faster on lists.
1426 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1427 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1428 END is smaller then START.
1429 * bug fix: SB-PROFILE will no longer report extra consing for nested
1430 calls to profiled functions.
1431 * bug fix: ROOM implementation had bogus fixnum declarations which
1432 could cause type-errors when calling ROOM on large images.
1433 * bug fix: if file compilation is aborted, the partial fasl is now
1434 deleted, and COMPILE-FILE returns NIL as the primary value.
1435 * bug fix: number of thread safety issues relating to SBCL's internal
1436 hash-table usage have been fixed.
1437 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1438 be returned from its body when the values were being returned
1439 using unknown-values return convection and the W-P-O was wrapped
1440 inside an UNWIND-PROTECT.
1441 * bug fix: sb-posix should now compile again under Windows, enabling
1442 slime to work again.
1444 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1445 * incompatible change: hash-table accessor functions are no longer
1446 automatically protected by locks. Concurrent accesses on the same hash-table
1447 from multiple threads can give inconsistent results or even corrupt the
1448 hash-table completely. Multi-threaded applications should do their own
1449 locking at the correct granularity. In the current implementation it is
1450 still safe to have multiple readers access the same table, but it's not
1451 guaranteed that this property will be maintained in future releases.
1452 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1453 and will signal an error at runtime.
1454 * enhancement: SB-THREAD package now exports a semaphore interface.
1455 * enhancement: CONS can now stack-allocate on x86 and
1456 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1458 * enhancement: nested lists can now be stack allocated on
1459 platforms providing stack allocation support.
1460 * enhancement: dynamic-extent support has been extended to support
1461 cases where there are multiple possible sources for the stack
1463 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1464 if the mutex is uncontested on Linux.
1465 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1466 as specified by the CLHS. (thanks to Tobias Rittweiler)
1467 * bug fix: NaN comparison now works on x86-64.
1468 * bug fix: CLOSE :ABORT T on a stream with pending output now
1470 * bug fix: instances of non-standard metaclasses using standard
1471 instance structure protocol sometimes missed the slot type checks
1473 * bug fix: known functions can be inlined in high-debug code.
1475 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1476 * minor incompatible change: the MSI installer on Windows no longer
1477 associates .lisp and .fasl files with the installed SBCL.
1478 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1479 on Windows. (thanks to Luis Oliviera)
1480 * new feature: SB-CLTL2 contrib module now implements
1481 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1482 * optimization: scavenging weak pointers is now more efficient,
1483 requiring O(1) instead of O(N) per weak pointer to identify
1484 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1485 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1486 method bodies using constant slot-names when the first argument is
1487 a specializer parameter for the method.
1488 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1489 names, when the class of the instance is a direct instance
1490 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1491 as slow as the constant slot-name case.)
1492 * optimization: member type construction is now O(N) instead
1494 * optimization: UNION and NUNION are now O(N+M) for large
1495 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1497 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1498 now more readable in environments like Slime which display it.
1499 (thanks to Tobias C. Rittweiler)
1500 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1501 was able to infer the correct argument type for the object on which
1502 the CAS operation was being performed.
1503 * bug fix: copy propagation interfered with parallel assignment
1504 semantics in local calls. (reported by Paul Khuong)
1505 * bug fix: the signed modular fixnum shift compiled to wrong code on
1506 x86 and x86-64. (spotted by a slight modification to some of
1509 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1510 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1511 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1512 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1514 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1515 and generic function now print the object identity for anonymous
1516 instances. (thanks to Attila Lendvai)
1517 * enhancement: as an extension to MOP, SBCL now supports SETF of
1518 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1519 (thanks to Attila Lendvai)
1520 * enhancement: sb-cover has an alternate annotation mode which puts
1521 the form annotations at the car of the form, instead of annotating
1522 it completely. The benefit of this mode is that it shows better
1523 which forms were instrumented by the compiler.
1524 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1525 by printer control variables. (reported by Dan Corkill)
1526 * bug fix: system leaked memory when delayed output was performed by
1527 the OS in smaller chunks then expected. (thanks to David Smith)
1528 * bug fix: system leaked memory when file streams were not closed
1530 * bug fix: large objects written to slow streams that were modified
1531 after the write could end up with the modified state written to
1532 the underlying file descriptor.
1533 * bug fix: multiple threads operating in parallel on the same stream
1534 could cause buffer-overflows.
1535 * bug fix: source location information is stored correctly
1536 (broken since 1.0.6). This bug would generally show up as the
1537 Slime debugger highlighting the wrong form when the sldb-show-source
1539 * bug fix: Branch forms are again annotated as branches in the sb-cover
1541 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1542 on x86-64. (reported by Gregory Vanuxem)
1543 * bug fix: EQUALP could return wrong results for structures with raw
1544 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1545 word). (reported by Vjacheslav Fyodorov)
1546 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1549 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1550 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1551 atomic compare-and-swap operations on threaded platforms.
1552 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1553 allows assigning a global minimum value to optimization qualities
1554 (overriding proclamations and declarations).
1555 * enhancement: closed over variables can be stack-allocated on x86
1557 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1559 * optimization: slot definition lookup is now O(1). This speeds up
1560 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1561 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1562 * optimization: ASSOC and MEMBER can now be open-coded for all
1563 combinations of keyword arguments when second argument is constant
1564 and SPEED >= SPACE. In other cases a specialized version is
1566 * bug fix: using obsoleted structure instances with TYPEP and
1567 generic functions now signals a sensible error.
1568 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1569 (reported by Kristoffer Kvello)
1570 * bug fix: backtrace construction is now more careful when making
1571 lisp-objects from pointers on the stack, to avoid creating bogus
1572 objects that can be seen by the GC.
1573 * bug fix: defaulting of values in contexts expecting more than 7
1574 variables now works on x86-64. (reported by Christopher Laux)
1575 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1577 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1578 as the property-list of a symbol.
1579 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1580 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1581 situations requested, are once again file-compileable. (reported
1584 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1585 * MOP improvement: support for user-defined subclasses of
1586 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1587 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1588 the expansion of DEFMETHOD, is responsible for generating a form
1589 which creates a list of specializers when evaluated. Additional
1590 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1591 debugging and introspective support.
1592 * minor incompatible change: the (unsupported) spinlock interface
1593 has changed: free spinlock now has the value NIL, and a held spinlock
1594 has the owning thread as its value.
1595 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1596 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1598 * enhancement: name of a socket-stream is now "a socket" instead of
1599 "a constant string".
1600 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1601 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1602 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1603 for generic functions. (Thanks to Tobias C. Rittweiler)
1604 * optimization: bignum printing speed has been improved by 20-40%
1605 (depending on the bignum size.)
1606 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1608 * bug fix: the cache used by the CLOS to store precomputed effective
1609 methods, slot offsets, and constant return values is now thread and
1611 * bug fix: generic function dispatch function updating is now thread
1612 and interrupt safe (in the sense that the known issues have been
1614 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1615 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1616 * bug fix: asdf systems with dependencies to the SB-POSIX or
1617 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1618 * bug fix: interrupt safety of applicable method computation has been
1621 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1622 * new contrib: sb-cover, an experimental code coverage tool, is included
1623 as a contrib module.
1624 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1625 significantly faster.
1626 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1627 produce more efficient code on x86-64 if the compiler can determine
1628 that (+ INDEX <constant>) does not require a bounds check and FOO
1629 has an element type at least 8 bits wide.
1630 * enhancement: a new, experimental synchronous timeout facility is
1631 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1632 * enhancement: when a symbol name conflict error arises, the
1633 conflicting symbols are always printed with a package prefix.
1634 (thanks to Kevin Reid)
1635 * enhancement: stepping is now once again supported on the SPARC and
1636 MIPS platforms. (It is also now more likely to work on CheneyGC
1638 * enhancement: sb-sprof can now also track and report accurate call
1640 * bug fixes: the treatment of non-standard subclasses of
1641 SB-MOP:SPECIALIZER is more correct.
1642 * incompatible change: PURIFY no longer copies the data from the
1643 dynamic space into the static and read-only spaces on platforms
1644 that use the generational garbage collector
1645 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1647 * bug fix: GC race condition occasionally resulting in crashes with
1648 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1650 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1652 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1653 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1654 * bug fix: an asynchronous interrupt could previously leave the
1655 system running with GC inhibited.
1656 * bug fix: a DECLARE form evaluated at top-level now causes an error
1657 rather than silently (or verbosely) returning NIL.
1658 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1659 result in a error being signalled due to source form lookup errors.
1660 (reported by Peter Graves)
1662 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1663 * incompatible change: removed writer methods for host-ent-name,
1664 host-ent-addresses -- changing the values did not update the DNS
1666 * minor incompatible change: changed experimental JOIN-THREAD interface
1667 * documentation: the manual now lists reader and writer methods
1668 in class slot documentation sections. (thanks to Richard M Kreuter)
1669 * documentation: unwinding from asyncronous events has been
1670 documented as unsafe.
1671 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1672 in multithreaded application code.
1673 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1674 platforms. (thanks to James Anderson for the optimization hint)
1675 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1677 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1678 variants no longer cons.
1679 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1680 their NOT- variants no longer cons.
1681 * optimization: EQUAL hash tables no longer use SXHASH for objects
1682 of all data types, but instead use an EQL hash for types for which
1683 EQUAL is the same as EQL.
1684 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1685 are significantly faster.
1686 * optimization: new STRING-OUTPUT-STREAM implementation is much
1687 faster for large outputs and conses 30% less on average.
1688 * enhancement: XREF information is now collected for references made
1689 to global variables using SYMBOL-VALUE and a constant argument.
1690 * enhancement: SIGINT now causes a specific condition
1691 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1692 * bug fix: FILE-POSITION used to signal an error in some cases where
1693 ANSI requires it to return NIL.
1694 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1695 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1696 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1698 * bug fix: bad type declaration in the CLOS implementation has
1699 been fixed. (reported by James Anderson)
1700 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1701 (thanks to Lutz Euler)
1702 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1703 required by the CLHS. (reported by Samium Gromoff)
1704 * bug fix: dead unbound variable references now signal an error.
1705 (reported by Marco Monteiro)
1706 * bug fix: / with an unused value was being deleted in safe code.
1707 (thanks to Marco Monteiro and Kevin Reid)
1708 * bug fix: number of characters that can be written onto a single
1709 line in a file is unlimited.
1710 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1711 been fixed by inhibiting interrupts for when GC is disabled.
1712 * bug fix: some interrupt safety issues with GETHASH, (SETF
1713 GETHASH), CLRHASH and REMHASH have been fixed.
1714 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1715 specifier no longer causes infinite recursion.
1716 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1717 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1718 * bug fix: an &environment argument with the correct variable information
1719 is passed to macros that are expanded during byte compilation.
1720 (reported by Samium Gromoff)
1721 * bug fix: a logic error was causing the hash function for bignums to
1722 have excessive amounts of collisions. (reported by Faré Rideau)
1723 * bug fix: modifying the contents of an array could change the return
1724 value of SXHASH on that array, which is only allowed for strings
1725 and bit vectors. (bug introduced in 0.9.16)
1726 * improvement: the x86-64/darwin port now passes all tests (except
1727 for the debugger tests) but should still be considered
1728 experimental until this is fixed.
1729 * improvement: a style-warning is signaled for CASE (etc) clauses with
1730 duplicate keys. (thanks to Kevin Reid)
1731 * improvement: macos/x86 and macos/x86-64 now use mach exception
1732 handlers for dealing with illegal instructions (for trapping and
1733 error handling) and memory protection violations (for GC).
1735 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1736 * new platform: experimental support for x86-64/darwin (MacOS).
1737 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1738 and getnameinfo sockets functions are used instead of gethostbyaddr
1739 and gethostbyname, on platforms where the newer functions are available.
1740 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1742 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1743 don't print the startup banner, but behave as if --noinform was passed
1744 as a command line argument. (thanks to Kevin Reid)
1745 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1746 * optimization: code using alien values with undeclared types is much faster.
1747 * optimization: the compiler is now able to open code SEARCH in more cases.
1748 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1749 * bug fix: using standardized COMMON-LISP special variables as loop
1750 variables no longer signals bogus package lock violations. (reported
1752 * bug fix: declaring local loop variables to be of a range-limited type
1753 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1754 (reported by Andras Simon)
1755 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1756 bugs remain on x86-64.)
1757 * bug fix: the #= and ## reader macros now interact reasonably with
1758 funcallable instances.
1759 * bug fix: type-checks for function arguments were compiled using the
1760 compiler policy settings of the wrong lexical environment (in 1.0.2
1762 * bug fix: SHADOW accepts characters as string designators, as required
1763 by the spec (thanks to Eric Marsden)
1764 * bug fix: fixed GC safety issues when foreign functions are called with
1765 non-base strings as arguments
1766 * bug fix: more consistent error output for fatal-compiler-warnings, like
1768 * bug fix: functions with proper names were showing up as NIL in
1769 backtraces (reported by Edi Weitz, regression in 1.0.2)
1771 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1772 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1773 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1774 produce more efficient code on the x86 if the compiler can determine
1775 that (+ INDEX <constant>) does not require a bounds check and FOO
1776 has an element type at least 8 bits wide.
1777 * bug fix: references to undefined variables are handled the same way
1778 in toplevel forms as in the normal compiler
1779 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1781 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1782 (thanks to Jon Buller)
1783 * improvement: faster compilation times for complex functions
1784 * improvement: added readlink support to SB-POSIX (thanks to Richard
1787 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1788 * improvement: experimental support for mach exception handling on
1789 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1791 * improvement: support for GBK external format.
1792 (thanks to Chun Tian (binghe))
1793 * improvement: the debugger now displays variables that have been closed
1794 over, in code compiled with (DEBUG 2) or higher
1795 * improvement: support for executable cores on NetBSD (thanks to
1797 * new feature: added a RESTART-FRAME debugger command
1798 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1799 be used to provide an implementation for FILE-POSITION on Gray streams
1800 (thanks to Eric Marsden)
1801 * new feature: add syslog, openlog and closelog support to SB-POSIX
1802 (thanks to Richard Kreuter)
1803 * optimization: the function call overhead in code compiled with
1804 a high DEBUG optimization setting is significantly
1805 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1806 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1807 (thanks to Tony Martinez)
1808 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1809 evaluated once (reported by Kevin Reid)
1810 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1811 works again (thanks to Kilian Sprotte)
1812 * bug fix: an error is signaled for tagbodies with duplicate tags
1813 (thanks to Stephen Wilson)
1814 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1815 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1816 stack frames from alien callbacks.
1817 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1818 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1819 65k pages (thanks to David Woodhouse)
1820 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1822 changes in sbcl-1.0.1 relative to sbcl-1.0:
1823 * new platform: FreeBSD/x86-64, including support for threading.
1824 * new feature: the compiler stores cross-referencing information
1825 about function calls (who-calls), macroexpansion (who-macroexpands)
1826 and special variables (who-binds, who-sets, who-references) for code
1827 compiled with (< SPACE 3). This information is available through the
1828 sb-introspect contrib.
1829 * new feature: users may subclass SEQUENCE, and have instances of
1830 these classes interoperate with standard Common Lisp functions if
1831 a number of methods are defined. (This feature is experimental
1832 and the interface subject to change based on feedback from SBCL
1833 users and the general community)
1834 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1835 x86/x86-64, rather than the previous fixed depth of 8
1836 * improvement: another pthread back-end of mutex "pthread-futex".
1837 * bug fix: non-ascii command-line arguments are processed correctly
1838 (thanks to Yaroslav Kavenchuk)
1839 * bug fix: non-required arguments were not passed correctly when a method
1840 defined using DEFMETHOD was called from a mop-generated method using
1841 CALL-NEXT-METHOD (reported by Pascal Costanza)
1842 * bug fix: recursion is now permitted in accessors through
1843 SLOT-UNBOUND. (reported by Pascal Costanza)
1844 * bug fix: an error was signaled at startup if the HOME environment
1845 variable was defined, but had an empty value (reported by Peter Van Eynde)
1846 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1847 signal a PROGRAM-ERROR, not a BUG.
1848 * bug fix: SB-POSIX:READDIR works when built with large file support.
1849 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1851 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1852 for better automatic indentation support. (thanks to Matt Pillsbury)
1853 * optimization: loading generic functions no longer takes O(n^2) time,
1854 proportional to the amount of methods in the generic function
1855 (reported by Todd Sabin and Jeremy Brown)
1856 * optimization: the FIND and POSITION family of sequence functions
1857 are significantly faster on arrays whose element types have been
1859 * improvements to the Windows port:
1860 ** Intermittent heap corruption problems have been fixed. (thanks
1861 to Alastair Bridgewater)
1862 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1864 ** Lisp is able to unwind foreign exception frames from alien
1865 callbacks. (thanks to Alastair Bridgewater)
1867 changes in sbcl-1.0 relative to sbcl-0.9.18:
1868 * improvement: experimental support for threading on FreeBSD/x86.
1869 (thanks to NIIMI Satoshi)
1870 * improvement: runtime option --dynamic-space-size can be used
1871 to set the size of the dynamic space reserved on startup.
1872 * improvement: floating point modes in effect are now saved in
1873 core, and restored on startup.
1874 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1875 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1876 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1877 threads are not running after *SAVE-HOOKS* have run.
1878 * improvement: writes to CLOS instance slots are type-checked in code
1879 compiled with (SAFETY 3)
1880 * improvement: floating-point exception handling on FreeBSD (thanks to
1882 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1883 (thanks to Zach Beane)
1884 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1886 * improvement: added support for the Shift-JIS external format.
1887 (contributed by NIIMI Satoshi)
1888 * improvement: callbacks are supported on Linux/PPC. (thanks to
1890 * bug fix: compiler bug triggered by a (non-standard) VALUES
1891 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1892 * bug fix: file compiler no longer confuses validated and already
1893 dumped structurres. (reported by Kaersten Poeck)
1894 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1895 fill-pointer signals a type-error as required. (thanks to
1897 * bug fix: disassemly of funcallable instances works.
1898 * bug fix: single stepping on PPC.
1899 * bug fix: fix thread-safety problems in the type system (generally
1900 manifesting as nonsensical errors like "STRING is a bad type specifier
1901 for sequences" or "The value 1 is not of type FIXNUM")
1902 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1903 (reported by Josip Gracin)
1904 * bug fix: an error is signaled for attempts to displace arrays with
1905 incompatible element types (thanks to Mario Mommer)
1906 * bug fix: more correct handling of wide characters in debug info
1907 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1908 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1909 and don't cause extra consing
1910 * optimization: MAP and MAP-INTO are significantly faster on vectors
1911 whose elements types have been declared.
1912 * Improvements to SB-SPROF:
1913 ** Support for allocation profiling
1914 ** Reduced profiling overhead, especially for long profiling runs
1915 * Improvements to the Windows port:
1916 ** floating point exceptions are now reported correctly.
1917 ** stack exhaustion detection works partially.
1918 ** more accurate GET-INTERNAL-REAL-TIME.
1919 ** better RUN-PROGRAM behaviour in case of errors in the child
1921 ** PROBE-FILE now simplifies pathnames correctly.
1922 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1923 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1924 1st 1970 (although time timezone data will be unreliable).
1925 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1927 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1928 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1929 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1931 * bug fix: two potential GC deadlocks affecting threaded builds.
1932 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1933 returns T (reported by Anton Kazennikov)
1934 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1935 with non-variable places
1936 * bug fix: remove a race condition in the setting of
1937 funcallable-instance functions, this should make threaded CLOS
1938 code more stable against memory faults.
1939 * bug fix: corruption of specials when unbinding is interrupted by an
1940 asynchronous unwind (reported by Hannu Koivisto)
1941 * improvement: the debugger will now also display local variables that
1942 are only used once, for code compiled with a DEBUG optimization quality
1945 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1946 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1947 * incompatible change: External-format support for FFI calls. The
1948 SB-ALIEN:C-STRING no longer implies an ASCII
1949 external-format. Instead the string is subject to external-format
1950 conversion. Additionally return values of type SB-ALIEN:C-STRING
1951 are by default of type (SIMPLE-ARRAY CHARACTER), not
1952 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1953 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1954 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1955 * incompatible change: SB-EXT package no longer contains the
1956 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1957 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1959 * incompatible change: the single-stepper is no longer available
1960 on Alpha, Mips and Sparc platforms.
1961 * minor incompatible change: the direct superclasses of
1962 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1963 not (STANDARD-OBJECT FUNCTION). This makes the
1964 class-precedence-lists of GENERIC-FUNCTION and
1965 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1967 * minor incompatible change: the default stream external format on
1968 non-unicode SBCL is no longer detected from the locale, but is always
1970 * new feature: Add a version of evaluator that uses an interpreter instead
1971 of the compiler. EVAL still uses the compiler by default, to switch it
1972 to use the interpreter, set the value of the variable
1973 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1974 * minor incompatible change: the single-stepper REPL has been merged
1975 with the normal debugger (see the "Stepping" heading of the debugger help
1976 for more details). The debugger command STEP will no longer switch
1977 to the single-stepper REPL.
1978 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1979 for a type now works.
1980 * bug fix: loading of default sysinit file works. (thanks to Leonid
1982 * bug fix: better detection of circularities in the file-compiler.
1983 (reported by Marco Monteiro)
1984 * bug fix: the CL pathname functions now work with files that have
1985 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1986 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1987 systems with Unix98 pty semantics.
1988 * bug fix: ASDF-INSTALL will now work with bsd tar.
1989 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1991 * bug fix: timers expiring in dead threads no longer cause a
1992 type-error (reported by Paul "Nonny Mouse").
1993 * bug fix: thanks to more lightweight single-stepper instrumentation,
1994 code compiled with (DEBUG 3) will compile and execute significantly faster,
1995 and will have more accurate type-inferencing than before
1996 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1997 whose bindings are modified
1998 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1999 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2000 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2001 CL:SOFTWARE-VERSION with proper version
2003 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2004 * feature: implemented the READER-METHOD-CLASS and
2005 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2006 as specified by AMOP.
2007 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2009 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2010 (thanks to Lutz Euler)
2011 * optimization: hashing of general arrays and vectors has been
2012 improved. (reported by Any Fingerhut)
2013 * enhancement: SB-INTROSPECT is now able to find definitions of
2014 profiled functions. (thanks to Troels Henriksen)
2015 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2016 as well, allowing compiler-macros for SETF-functions to expand.
2017 * enhancement: step-instrumentation no longer wraps known
2018 single-value functions with multiple-value context, allowing
2019 better type inference.
2020 * fixed bug #337: use of MAKE-METHOD in method combination now works
2021 even in the presence of user-defined method classes. (reported by
2022 Bruno Haible and Pascal Costanza)
2023 * fixed bug #339(c): if there are applicable methods not part of any
2024 long-form method-combination group, call INVALID-METHOD-ERROR.
2025 (reported by Bruno Haible)
2026 * fixed bug #361: the :FUNCTION initarg in the protocol for
2027 initialization of methods can now be used to override
2028 internally-produced optimized functions. (reported by Bruno
2030 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2031 system-provided lambda expression no longer cause warnings about
2032 unbound #:|pv-table| symbols.
2033 * bug fix: improved the handling of type declarations and the
2034 detection of violations for keyword arguments with non-constant
2036 * bug fix: potentially erronous calls to PATHNAME and
2037 MERGE-PATHNAMES were being flushed in some cases.
2038 (reported by Richard Kreuter)
2039 * bug fix: compiled calls to TYPEP were mishandling obsolete
2040 instances. (reported by James Bielman and Attila Lendvai)
2041 * bug fix: format strings with ~> without matching ~< no longer
2042 trigger an AVER, but signal an understandable error instead.
2043 (reported by Antonio Martinez)
2044 * bug fix: specifying an output-file without a pathname-type for
2045 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2046 of input-file instead of "fasl". (reported by Robert Dodier)
2047 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2048 (reported by James Y Knight).
2049 * bug fix: compiler-macros-function did not consider the environment
2050 argument for shadowing by local functions.
2051 * bug fix: compiler-macros expansion was inhibited by local INLINE
2053 * bug fix: inline expansions of known functions were subject to
2054 step-instrumentation in high debug policies, leading to problems
2055 with type-inference.
2056 * bug fix: compiler failed to differentiate between different CONS
2057 types in some cases.
2058 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2059 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2060 * bug fix: #368: incorrect use of expressed vs. upgraded array
2062 * bug fix: #306a: more precise unions of array types.
2063 * thread-safety improvements:
2064 ** CONDITION-WAIT could return early on Linux, if the thread was
2065 interrupted and subsequently continued with SIGCONT.
2066 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2068 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2069 * added support for the ucs-2 external format. (contributed by Ivan
2071 * minor incompatible change: pretty printing of objects of type
2072 (cons symbol) is, in the default pprint-dispatch-table, now
2073 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2075 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2076 called later in a class's lifetime, possibly as late as when the
2077 first instance of the class is created. Previously,
2078 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2079 class became finalizeable.
2080 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2081 for multibyte external-format streams. (thanks to "vbzoli")
2082 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2083 with :ALLOCATION :CLASS inherited from superclasses of the
2085 * fixed bug: anonymous classes can now be created using the :NAME
2086 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2087 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2088 * fixed bug: core-files saved with :EXECUTABLE T can again be
2089 executed when SBCL_HOME isn't set. (reported by James Knight)
2090 * fixed bug: toplevel LOCALLY forms with declarations could
2091 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2092 * fixed bug: printing from several different threads using different
2093 values of *print-case* could cause invalid output, due to
2094 some internal special variables of the printer not being bound
2095 thread-locally (reported by Max Mikhanosha)
2096 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2097 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2098 (reported by Pascal Costanza)
2099 * fixed bug: FINALIZE-INHERITANCE is called from
2100 REINITIALIZE-INSTANCE on classes when the class has previously
2101 been finalized, as required by AMOP.
2102 * minor code generation optimizations:
2103 ** better register allocation in CLOS dispatching functions
2104 ** overflow detection when coercing signed bytes to fixnums on x86-64
2105 ** is now implemented with one IMUL instruction instead of three shifts
2106 ** more efficient bit-vector access on x86 and x86-64
2107 ** more efficient access to raw structure slots on x86 and x86-64
2108 * fixed some bugs revealed by Paul Dietz' test suite:
2109 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2110 return its argument.
2112 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2113 * feature: thread support on Solaris/x86, and experimental thread support
2115 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2117 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2118 default method for SLOT-UNBOUND.
2119 * minor incompatible change: prevent the user from specializing the
2120 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2121 somewhat counter to the intent of the protocol, I (CSR) think, and
2122 additionally it just doesn't work in SBCL as currently
2123 implemented, thanks to optimizations (that are always valid for
2124 the other three SLOT-VALUEish functions, but not for the setter).
2125 * minor incompatible change: the :SB-LDB feature is now enabled by
2126 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2127 the low-level debugger.
2128 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2129 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2130 down to an SB-SYS:FD-STREAM, allowing direct communication in
2131 more cases. Temporary files and pipes are still used as a fallback
2133 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2134 on the non-reentrant C functions localtime(3) and gmtime(3).
2135 * bug fix: global optimization policy was not visible in LOCALLY and
2137 * bug fix: class objects can be used as specializers in methods.
2138 (reported by Pascal Costanza)
2139 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2140 with a type error. (reported by blitz_ on #lisp)
2141 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2142 failed with a type error. (reported by Pascal Bourguignon)
2143 * bug fix: merging pathnames against defaults with :DIRECTORY
2144 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2145 (reported by James Y Knight)
2146 * bug fix: saving large (>2GB) cores on x86-64 now works
2147 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2148 constant index and a (simple-array (signed-byte 32)) array
2149 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2150 error (patch by Robert J. Macomber)
2151 * feature: TIME now displays the amount of run-time spent in GC
2152 * bug fix: The debugger now does a better job of respecting
2153 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2154 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2155 workaround for bug 403.)
2156 * bug fix: floating point exception handling now works on FreeBSD
2157 (thanks to NIIMI Satoshi)
2158 * fixed some bugs revealed by Paul Dietz' test suite:
2159 ** MISC.641: LET-conversion were not supposed to work in late
2161 * improvements to the Win32/x86 port:
2162 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2163 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2165 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2166 * new feature: source path information is generated for macro-expansion
2167 errors for use in IDE's like Slime (thanks to Helmut Eller)
2168 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2169 * bug fix: compiler does not loop forever on an invalid type in
2171 * improvement: compilation of most CLOS applications is significantly
2173 * optimization: added a limited bytecode compiler for simple toplevel
2174 forms, speeding up compilation and FASL loading
2175 * bug fix: the statistical profiler now properly distinguishes anonymous
2178 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2179 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2180 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2181 into subclasses of the finalized class. Now user calls to
2182 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2183 system return before any subclasses are finalized.
2184 * minor incompatible change: The reader no longer ignores errors
2185 regarding non-existent packages in #+ and #- feature tests.
2186 * new feature: command line options --no-sysinit, --no-userinit to
2187 inhibit loading the corresponding init files
2188 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2189 for sending data through UDP sockets (thanks to François-René Rideau)
2190 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2191 error is signalled instead (thanks to François-René Rideau)
2192 * minor incompatible change: Error signalling behaviour of lexical
2193 operations violating package locks has changed slightly. Refer to
2194 documentation on package locks for details.
2195 * enhancement: EVAL can process IF-expressions without resorting to the
2197 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2198 constant-folded properly due to missing out-of-line functions.
2199 (reported by Mika Pihlajamäki)
2200 * bug fix: LISTEN sometimes returned T even in cases where no data was
2201 immediately available from the stream
2202 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2203 were reversed. (reported by Levente Mészáros)
2204 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2205 when given a vector displaced to an adjustable array. (reported
2207 * bug fix: derivation of float boundaries from numbers outside the
2208 appropriate float range (reported by John Wiseman)
2209 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2211 * bug fix: precomputing cache entries for generic functions with
2212 some subclasses of specializers as yet invalid does not attempt to
2213 fill a cache line with a negative offset. (reported by Levente
2215 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2216 allow condition class objects as arguments to DOCUMENTATION and
2217 (SETF DOCUMENTATION); only find and set documentation for
2218 structure names for the STRUCTURE doc-type. (suggested by Gary
2220 * improvements to the Win32/x86 port:
2221 ** (user-homedir-pathname) and default initialization file
2222 locations now know about the user's "Documents and Settings"
2223 directory (thanks to Yaroslav Kavenchuk)
2224 ** run-program is implemented (thanks to Mike Thomas)
2225 ** sockets support (thanks to Timothy Ritchey)
2226 ** better backtrace support (thanks to Alastair Bridgewater)
2227 ** sb-grovel supported
2228 ** asdf-install and sb-posix work somewhat
2229 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2230 * improvements to the Solaris/x86 port:
2231 ** works on Solaris 11/Solaris Express
2232 ** floating-point exception handling support
2233 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2234 * fixed some bugs revealed by Paul Dietz' test suite:
2235 ** REMOVE-METHOD returns its generic function argument even when
2236 the method is not one of the generic functions' methods.
2237 ** objects declared as MEMBER types can be admissible arguments to
2238 structure accessors.
2239 ** printing characters should simply be printed by the FORMAT ~:C
2241 ** compiler failure when compiling functions with hairy constant
2242 defaults for optional parameters.
2243 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2244 function, which is already optimized.
2246 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2247 * new platform: experimental support for SBCL x86/Darwin, including
2248 MacOS X 10.4.5 on Intel.
2249 * new feature: Unicode character names are now known to the system
2250 (through CHAR-NAME and NAME-CHAR).
2251 * new feature: the filesystem location of SBCL's core file is
2252 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2253 * minor incompatible change: the contrib modules SB-POSIX and
2254 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2255 this change is to make it easier to distribute
2256 location-independent binaries.
2257 * bug fix: as implied by AMOP, standardized classes no longer have
2258 slots named by external symbols of public packages. (reported by
2260 * optimization: calling functions via constant symbols -- as in
2261 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2262 via the function object as in (FUNCALL #'FOO).
2263 * optimization: on x86 and x86-64, the calling convention for the
2264 case of dealing with an unknown number of values has been altered
2265 to be friendlier to the prediction heuristics implemented,
2266 particularly with reference to CALL and RET pairing. (thanks to
2267 Alastair Bridgewater)
2268 * optimization: on x86, the code for access to thread-local symbol
2269 values and binding/unbinding of thread-local symbols is smaller.
2270 (thanks to Alastair Bridgewater)
2271 * enhancement: CONSTANTP is now able to determine constantness of
2272 more complex forms, including calls to constant-foldable standardized
2273 functions and some special forms beyond QUOTE.
2274 * fixed bug: occasional GC crashes on Solaris/x86
2275 * optimization: x86-64 supports stack allocation of results of simple
2276 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2277 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2278 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2279 (thanks to James Knight)
2280 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2281 by the standard (thanks to Stephen Compall)
2283 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2284 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2285 be used for bundling the runtime and the core file into one
2286 executable binary. This feature is not currently supported on all SBCL
2287 platforms. (thanks to James Bielman and NIIMI Satoshi)
2288 * new feature: a generational or ephemeral garbage collector is now
2289 the default on the PowerPC platform (both Linux and Darwin). The
2290 old Cheney (stop and copy) collector is a build-time option.
2291 (thanks to Cyrus Harmon, after Raymond Toy)
2292 * minor incompatible change: the method by which SBCL finds its
2293 contributed modules has changed; it no longer relies on symbolic
2294 links from an $SBCL_HOME/systems directory, but searches directly
2295 in the subdirectories of $SBCL_HOME.
2296 * enhancement: the dynamic heap size on the Linux/PPC platform is
2297 markedly larger, even using the older Cheney garbage collector.
2298 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2299 certain complicated string types. (reported by Gary King)
2300 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2301 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2302 * fixed bug: DOCUMENTATION on structures no longer signals an
2303 error if no structure type of the right name exists. (reported by
2305 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2306 applicable non-standard primary or :AROUND method on
2307 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2308 no longer cause unbound variable errors. (reported by Kevin Reid)
2309 * fixed bug: metacircle resolution in cases where methods have slots
2310 added before the slots from STANDARD-METHOD. (reported by Jean
2312 * fixed bug: the Power PC assembly code for calling into lisp
2313 sometimes computed its return address wrongly (depending on the
2314 15th bit of the address, fixed at link time). This used to
2315 manifest itself in a segmentation violation while building PCL.
2316 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2317 many others over the years)
2318 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2319 the stack pointer (treated as a signed integer) is negative.
2320 (thanks to Peter van Eynde)
2322 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2323 * new platform: experimental support for the Windows operating
2324 system has been added. (thanks to Alastair Bridgewater)
2325 * fixed several bugs in and robustified the PPC FFI (including
2326 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2327 * bug fix: allow non-simple string symbol names (reported by Paul
2329 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2331 * bug fix: saving a core corrupted callbacks on x86/x86-64
2332 * bug fix: closed a loophole in metacircularity detection and
2333 grounding in the PCL implementation of CLOS.
2334 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2335 (reported by tomppa on #lisp)
2336 * bug fix: clear the direction flag on Lisp -> C transitions, as
2337 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2338 (reported by Andrej Grozin and Hendrik Maryns)
2339 * optimization: major improvements to GC efficiency on GENCGC platforms
2340 * optimization: faster implementation of EQUAL
2341 * optimization: emit more efficient opcodes for some common
2342 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2343 * optimization: several other minor code-generation improvements on x86-64
2344 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2346 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2347 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2348 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2349 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2350 by ANSI as a generic function, and for consistency (SETF
2351 GENERIC-FUNCTION-NAME) is treated likewise.
2352 * fixed bug #233.b: make constraint propagation notice when a variable
2353 value is changed after it is referenced but before it is used
2354 * fixed bug #296: no more arbitrary behaviour from filenames with
2355 odd characters as --load arguments. (reported by Adam Warner)
2356 * fixed bug #390: :CHARACTER-SET pathname components now work as
2357 expected. (reported by Tim Daly Jr)
2358 * fixed bug #391: complicated :TYPE intersections in slot
2359 definitions no longer cause an error in PCL internals.
2360 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2361 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2362 returning the number of octets which would be written to the
2363 file-stream. (thanks to Robert J. Macomber)
2364 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2365 arguments to the internal stream functions. (thanks to David
2367 * bug fix: stack exhaustion is now handled on the x86/SunOS
2368 platform. (thanks to Daisuke Homma)
2369 * bug fix: more accurate ROOM results on GENCGC platforms
2370 * optimization: improved type inference for arithmetic-for
2371 index variables in LOOP
2372 * optimization: faster floating-point SQRT on x86-64
2373 * fixed some bugs revealed by Paul Dietz' test suite:
2374 ** DOCUMENTATION returns NIL instead of "" for method combinations
2375 that don't have a docstring
2377 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2378 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2379 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2380 therefore are not customizeable by user code (as seems to be at
2381 least permitted and maybe required by AMOP). As a consolation,
2382 however, the SBCL implementation of these functions now calls
2383 REINITIALIZE-INSTANCE as specified by AMOP.
2384 * bug fix: slot-definition documentation is propagated as per ANSI
2385 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2386 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2387 argument, as do eslotd initialization methods. (from Pascal
2388 Costanza's "Closer" project)
2389 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2390 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2392 * bug fix: it is now possible to have more than one subclass of
2393 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2394 (reported by Bruno Haible, Pascal Costanza and others)
2395 * bug fix: the dependent update protocol now works for generic
2396 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2397 and Pascal Costanza)
2398 * bug fix: condition-class instances corresponding to
2399 DEFINE-CONDITION forms are now created eagerly. (reported by
2400 Kalle Olavi Niemitalo on comp.lang.lisp)
2401 * bug fix: floating point printing is more accurate in some
2402 circumstances. (thanks to Simon Alexander)
2403 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2404 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2405 * bug fix: callbacks on OS X now preserve stack-alignment.
2406 (thanks to Cyrus Harmon)
2407 * enhancement: the x86-64 disassembler is much better at
2408 disassembling SSE instructions. (thanks to Lutz Euler)
2409 * enhancement: CHECK-TYPE on a variable now allows type-inference
2410 (thanks to Vincent Arkesteijn)
2411 * optimization: improved performance of EUC-JP external format.
2412 (thanks to NIIMI Satoshi)
2413 * optimization: performance improvements to IO on file streams of
2414 :ELEMENT-TYPE CHARACTER
2415 * optimization: much faster memory allocation on x86-64
2416 * optimization: faster garbage collections (latency and throughput)
2418 * optimization: faster bignum subtraction and division on x86 and x86-64
2419 (thanks to Lutz Euler)
2420 * optimization: more accurate type-inference for loops that use a
2421 floating point index variable or a negative step.
2423 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2424 * bug fix: add a workaround to SBCL looping infinitely at startup on
2425 Linux kernels with apparently buggy implementations of personality().
2426 (thanks to Svein Ove Aas)
2427 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2428 (thanks to David Lichteblau)
2429 * bug fix: local bindings shadow global symbol macros for
2430 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2431 * optimization: non-open coded uses of numeric comparison operators
2432 (e.g. >) no longer cons when called with more than one parameter
2433 on platforms supporting dynamic-extent allocation.
2434 * enhancement: saving cores with foreign code loaded is now supported
2435 on MIPS/Linux in addition to the previously supported platforms.
2436 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2437 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2438 * bug fix: division by zero in sb-sprof when no samples were collected
2439 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2440 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2441 (thanks to Alexander Kjeldaas)
2442 * new feature: ignoring the return values of destructive functions
2443 like NREVERSE signals a compile-time style-warning.
2444 (thanks to Kevin Reid)
2445 * new feature: the alignment of alien structure fields can be
2446 explicitly specified. (thanks to Cyrus Harmon)
2447 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2448 and dump core on SIGQUIT
2450 ** incompatible change: threads do not inherit values of specials
2451 from their parents (see manual)
2452 ** bug fix: threads stacks belonging to dead threads are freed by the
2453 next exiting thread, no need to gc to collect thread stacks anymore
2454 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2455 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2456 ** bug fix: dynamic variable and thread start related gc lossage
2457 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2459 * fixed some bugs revealed by Paul Dietz' test suite:
2460 ** SUBTYPEP is slightly more accurate on heinously complicated
2461 CONS types where some of the members have uncertain (in the
2462 NIL, NIL sense) type relationships to each other.
2464 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2465 no longer purified unless :PURIFY T is explicitly specified.
2466 ** Non-purified cores are significantly smaller than before
2468 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2469 * new feature: timers based on Zach Beane's excellent timer package
2470 * added support for the following external formats: koi8-u,
2471 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2472 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2473 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2474 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2475 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2476 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2477 * incompatible change: a threaded SBCL will no longer revert to
2478 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2479 * bug fix: interrupts are disabled until startup is complete; no
2480 more sigsegvs when receiving a signal to soon
2481 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2483 * bug fix: add a workaround for the memory randomization features in
2484 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2485 workaround will only be in effect on systems with the proc filesystem
2487 * bug fix: printing objects of type HASH-TABLE signals a
2488 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2490 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2491 have been running for over 50 days. (reported by Gilbert Baumann)
2492 * bug fix: the logic for getting names of functions gets less
2493 confused when confronded with alternate-metaclass
2494 funcallable-instances. (reported by Cyrus Harmon)
2495 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2496 consistent, even on internal alternate-metaclass objects.
2497 * bug fix: flush closure information collected by physical
2498 environment analysis prepass before the main pass. (bug reported
2500 * bug fix: compiler pack phase does not modify a hashtable, which is
2501 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2502 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2503 may be expanded. (reported by Alexander <malishev> on c.l.l)
2504 * bug fix: no more style-warnings when compiling code using LAST
2505 under high-SPEED low-SPACE settings. (reported by David Wallin
2507 * fixed some incompatibilities between SBCL's MOP and the MOP
2509 ** the METAOBJECT class is now implemented;
2510 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2511 STANDARD-OBJECT, as required;
2512 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2513 now compatible (as required by VALIDATE-SUPERCLASS); there
2514 remains a consistency requirement over the presence or absence
2515 of the FUNCTION class in the superclass list of finalized
2516 classes; see the manual for more details;
2517 ** the :AROUND method for COMPUTE-SLOTS on
2518 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2519 requested slot ordering.
2521 ** bug fix: parent thread now can be gc'ed even with a live
2523 ** bug fix: binding a special with PROGV to no value is not
2524 the same as that symbol not having been bound (thanks to
2526 ** bug fix: binding specials is thread safe (thanks to
2528 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2529 and SB-SPROF do not die with 'no handler for signal XX in
2530 interrupt_handle_now(..)' anymore
2531 ** bug fix: WITH-TIMEOUT works with multiple running threads
2532 * fixed some bugs revealed by Paul Dietz' test suite:
2533 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2534 the :method-class keyword argument.
2536 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2537 * new port: the Solaris operating system on x86 processors is now
2538 mostly supported, though some rough edges in the environment
2539 remain. (thanks to Daisuke Homma)
2540 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2541 space for its heap. (thanks to Thiemo Seufer)
2542 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2543 closures. (thanks to Thiemo Seufer)
2544 * minor incompatible change: eof selects abort in the debugger.
2545 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2546 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2548 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2549 deprecated, and will go away in a future revision of SBCL.
2550 * minor incompatible change: GC-ON and GC-OFF are no longer
2551 implemented with a counter, it does not matter how many times gc
2552 is switched on or off
2553 * bug fix: discriminating functions for generic function classes
2554 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2555 make invalid assumptions about method precedence order. (reported
2557 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2558 platforms. (thanks to Thiemo Seufer)
2559 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2560 * bug fix: correct pathname printing with printer escaping is on.
2561 (thanks to Kevin Reid)
2562 * bug fix: complex VOP definitions in "user-space" no longer trigger
2563 package locks. (reported by Zach Beane)
2564 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2565 for funcallable-instance functions, and is no different from
2567 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2568 characters in the current readtable. (reported by Nicholas Neuss)
2569 * bug fix: SUBTYPEP on various CONS types returns more a more
2570 accurate acknowledgment of its certainty.
2571 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2572 lists in some cases. This partially fixes bug 384.
2573 * flush all standard streams before prompting in the REPL and the
2575 * bug fix: signal handling and triggering gc do not conflict
2576 directly anymore, in particular a high frequency sb-sprof does
2577 not prevent gc from running
2578 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2579 approximation for timezone and DST information between the
2580 universal time epoch and the smallest negative 32-bit time_t.
2581 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2582 year 1899 so long as the encoded time is non-negative.
2583 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2584 the correct answer for non-constant rotate amounts when performing
2585 an inline 32-bit rotation.
2587 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2588 there is only one thread in the session
2589 ** bug fix: memory leak for streams created in one thread and
2590 written to in another
2591 ** bug fix: lockup when compiled with gcc4
2592 ** bug fix: race that allows the gc to be triggered when gc is
2594 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2595 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2597 ** bug fix: finished threads are gc'ed properly
2598 * fixed some bugs revealed by Paul Dietz' test suite:
2599 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2600 has arguments with a different set of applicable methods from
2601 the orignal arguments.
2602 ** The type error thrown by MAP now has a correct expected-type
2604 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2605 name a compiled function.
2606 ** Three MISC tests where a large bignum was improperly coerced to
2607 a float that couldn't represent that bignum during type
2608 derivation were fixed.
2609 ** SUBTYPEP can now handle types involving the negation of a
2610 list-form FUNCTION type.
2611 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2612 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2613 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2615 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2616 * New feature: Experimental support for bivalent streams: streams
2617 opened with :element-type :default now allow character and binary
2618 (unsigned-byte 8) I/O
2619 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2620 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2622 * bug fix: no more highly sporadic "couldn't check whether ~S is
2623 readable" when reading a stream and an interrupt hits in the middle
2624 of a select system call
2625 * compiler better recognizes complex arrays (reported by Eduardo
2627 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2628 for variables on SBCL built with linkage-tables. (reported by Luis
2630 * various error reporting improvements.
2631 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2632 (Thanks to Thiemo Seufer)
2633 * bug fix: nested reader invokations work correctly
2634 * bug fix: it is possible to have simultaneous references to foreign
2635 code and foreign data with the same name.
2637 ** added x86-64 support
2638 ** incompatible change: the threading api now works with thread
2639 objects instead of thread ids
2640 ** bug fix: threads are protected from signals and interruption when
2641 starting up or going down
2642 ** bug fix: a race where an exiting thread could lose its stack to gc
2643 ** bug fix: don't halt on infinite error in threads if possible
2644 ** fixed numerous gc deadlocks introduced in the pthread merge
2645 ** bug fix: fixed thread safety issues in read and print
2646 ** bug fix: debugger doesn't hang on session lock if interrupted at
2647 an inappropriate moment
2648 ** bug fix: run-program is now thread safe(r)
2649 ** bug fix: inner with-recursive-lock no longer releases the mutex
2650 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2651 * fixed some bugs revealed by Paul Dietz' test suite:
2652 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2653 EXPECTED-TYPE slots filled.
2654 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2656 ** MAKE-CONDITION accepts classes as type-designators.
2657 ** COMPILE may never return NIL.
2658 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2659 range before calling Unix time functions
2661 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2662 * numerous signal handling fixes to increase stability
2663 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2664 * minor incompatible change: we now correctly canonize default
2665 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2666 as per the MOP, rather than the historical (INITARG INITFUNCTION
2667 INITFORM). (reported by Bruno Haible)
2668 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2669 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2670 for more information.
2671 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2672 pathname is a directory pathname.
2673 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2674 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2676 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2677 :METACLASS argument in addition to a class name. (reported by
2678 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2679 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2680 (reported by Bruno Haible; patch from Gerd Moellmann)
2681 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2683 * bug fix: more cleanups to the floating point exception handling on
2684 x86-64 (thanks to James Knight)
2685 * bug fix: the compiler does not try to constant fold calls of
2686 COERCE and BIT-* functions when they return freshly constructed
2687 objects. (reported by Nikodemus Siivola and Paul Dietz)
2688 * optimization: improved the MIPS versions of generic (in the
2689 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2690 * optimization: direct conversion of (unsigned-byte 32) to floats on
2691 the PowerPC platform.
2692 * optimization: structure instances with raw slots now use less
2693 memory, and probably show better memory locality. (thanks to
2695 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2696 are treated as requests for stack allocation on the x86-64,
2697 Alpha-32, PPC and SPARC platforms.
2698 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2699 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2700 (thanks to Tony Martinez)
2702 ** gcing a dead thread can no longer lead to lockups
2703 ** threads block signals until they are set up properly
2704 ** errno is no longer shared by threads
2705 ** interrupt-thread restores the eflags register on x86
2706 ** fixed some lockups due to gc/thread interaction
2707 * fixed some bugs revealed by Paul Dietz' test suite:
2708 ** invalid dotted lists no longer raise a read error when
2709 *READ-SUPPRESS* is T
2710 ** signal an error if a symbol that names a declaration is used
2711 as the name of a type, or vice versa
2712 ** allow using the (declare (typespec var*)) abbreviation for
2713 (declare (type typespec var*)) with all type specifiers
2714 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2715 ** always return NIL from PPRINT-POP when OBJECT is NIL
2716 ** don't signal errors when pretty-printing malformed LABELS,
2717 FLET or MACROLET forms
2718 ** declarations in a DOLIST body are also in scope for the
2720 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2722 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2725 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2726 * fixed cross-compiler leakages that prevented building a 32-bit
2727 target with a 64-bit host compiler.
2728 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2729 opened with :IF-EXISTS :OVERWRITE.
2730 * fixed bug 281: error for an invalid qualifier in a short-form method
2731 combination method is not signalled until the faulty method is called.
2732 * bug fix: iteration variable type inferrer failed to deal with open
2733 intervals. (reported by Alan Shields)
2734 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2735 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2736 or more runtime options were provided to the sbcl binary.
2737 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2738 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2739 * optimization: there's now a fast-path for fixnum arguments in the
2740 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2741 * optimization: the code generated on x86-64 is more compact thanks
2742 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2743 * bug fix: floating-point exception handling now partly works on
2744 x86-64. (Thanks to James Knight)
2745 * improvement to the MIPS backend from Thiemo Seufer: C-style
2746 64-bit long long arguments and return values to alien functions
2748 * fixed some bugs revealed by Paul Dietz' test suite:
2749 ** the type-error signalled from WARN has a filled-in DATUM slot.
2750 ** the type-error required when a stream is not associated with
2751 a file has the stream as its datum.
2752 ** type-errors on single-floats on x86-64 no longer have
2753 :INVALID-OBJECT as the datum
2754 ** the type-errors signalled for invalid function names now have
2755 a correct expected type
2756 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2757 for structures defined with a :TYPE. Documentation strings for
2758 typed structures are no longer immediately discarded
2759 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2760 broadcast streams and synonym streams. FILE-LENGTH now also works
2761 on broadcast streams.
2763 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2764 * incompatible change: the --noprogrammer option, deprecated since
2765 version 0.7.5, has been removed. Please use the equivalent
2766 --disable-debugger option instead.
2767 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2769 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2770 inoperational for a while now) has been completely removed.
2771 * null lexical environments are now printed as #<NULL-LEXENV>,
2772 significantly reducing the amount of clutter in typical backtraces.
2773 * documentation on weak pointers, finalization, and after GC hooks
2774 has been added to the manual.
2775 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2776 as other specialized array types, is much faster. SUBSEQ and
2777 COPY-SEQ on such arrays have also been sped up.
2778 * optimization: EQL is now more efficient when at least other argument
2779 is known to be of type (OR FIXNUM (NOT NUMBER)).
2780 * fixed bug: the runtime is now less vulnerable to changes in the
2781 size of the SBCL object on OS X, and virtual memory is reserved for
2782 all spaces that need to be at a fixed address.
2783 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2784 * fixed bug: finalizers and after GC hooks that cause consing are now
2786 * fixed bug: compiler error messages and summaries are now printed to
2787 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2788 * fixed inference of the upper bound of an iteration variable.
2789 (reported by Rajat Datta).
2790 * fixed bug 211e: calling local functions with duplicated constant
2791 keyword argument no longer causes a bogus style warning about an
2793 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2794 ftype declaration to be disregarded. (reported by Dave Roberts)
2795 * fixed bug 373: caused by erronous compilation of references to alien
2796 variables in the runtime on ppc/darwin.
2797 * fixed bug 376: CONJUGATE type deriver.
2798 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2799 (reported by Baughn on #lisp)
2800 * a cross-compiler bug on non-x86 platforms has been identified and
2801 fixed. (thanks to Bruno Haible)
2802 * improvements to the MIPS runtime code for increased stability.
2803 (thanks to Thiemo Seufer)
2804 * increased the maximimum compact environment size to allow
2805 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2806 * partial workaround for bug 135: don't name the function we're
2807 calling for hairy cases of EVAL, so as not to accumulate one environment
2808 entry per call to EVAL. (reported by Kevin Reid)
2809 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2810 * optimization: type testing for non-vector arrays should be faster.
2811 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2813 * bug fix: setting 31st element of a bit vector to zero did not work
2815 * bug fix: redefining a class definition which failed due to a
2816 previous accessor / function clash now works (but see BUGS entry
2817 #380 for more problems in this area). (thanks to Zach Beane)
2818 * the long form of DEFINE-METHOD-COMBINATION disables method group
2819 checking when given a single method group with pattern *. (thanks
2821 * on x86 compiler supports stack allocation of results of simple
2822 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2823 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2824 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2825 * fixed some bugs related to Unicode integration:
2826 ** the restarts for recovering from input and output encoding
2827 errors only appear when there is in fact such an error to
2829 * fixed some bugs revealed by Paul Dietz' test suite:
2830 ** MISC.549 and similar: late transformation of unsafe type
2831 assertions into derived types caused unexpected code
2833 ** SCALE-FLOAT type deriver is less wrong.
2834 ** type derivers for EXP, LOG and similar functions compute result
2835 types for complex arguments better.
2836 ** (MISC.563) CONJUGATE type deriver works for very restricted
2838 ** out-of-line type testers for character strings are available.
2839 ** EQUAL compiler transform understands specialness of objects
2841 ** accessing double-floats stored on the stack now works on x86-64.
2842 ** debugger internals could sometimes create invalid lispobjs,
2843 resulting in GC crashes.
2844 ** MISC.548: type check weakening can convert required type into
2846 ** initialization forms for bindings are not in scope of free special
2849 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2850 * incompatible change: thread support for non-NPTL systems has
2851 been removed - locking is buggy and unreliable. A threaded
2852 SBCL build will now warn at startup and refuse to create
2853 new threads, unless futex support is detected in the kernel
2854 * incompatible change: the top level REPL now has only an ABORT
2855 restart associated with it, not TOPLEVEL and ABORT as it used to.
2856 TOP and TOPLEVEL are now available as debugger commands for
2857 returning to the top level.
2858 * incompatible change: forms evaluated in the REPL now use the
2859 global optimization policy.
2860 * incompatible change: user- and system-initialization files are
2861 no longer processed with LOAD, but by READ and EVAL; hence the
2862 global optimization policy, startup package, readtable, etc,
2864 * The .fasl file format number has been incremented because of
2865 various incompatible changes.
2866 * internal entry point details and argument counts no longer appear
2867 in backtraces unless explicitly requested by setting
2868 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2869 * built-in and standard functions no longer have names like "top
2870 level local call to FOO".
2871 * fixed bug 32: functions defined in non-null lexical environments
2872 now have more legible printed representation
2873 * fixed bug 33: functions defined in non-null lexical environemnts
2874 are now more amenable to inspection by INSPECT.
2875 * workaround for bug 354: XEPs no longer appear in backtraces unless
2876 explicitly requested.
2877 * fixed bug: receiving the signal which results from attempting to
2878 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2879 SIGBUS on other *BSDs) on architectures where the C stack is also
2880 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2881 to debugger confusion or wild instability. (reported by Cheuksan
2883 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2884 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2885 (reported by Lutz Euler)
2886 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2887 compiled code. (reported by Paul Dietz)
2888 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2889 specialized parameter to a method to something that is not TYPEP
2890 the specializer is now possible.
2891 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2892 face of package deletion.
2893 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2894 pathname. (reported by David Tolpin on c.l.l)
2895 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2896 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2897 STRING-STREAM and FILE-STREAM, respectively.
2898 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2899 than previously; in addition, its test suite is now run on build.
2900 (thanks to Luke Gorrie)
2901 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2902 * optimization: added a immediate representation for single-floats
2904 * fixed some bugs revealed by Paul Dietz' test suite:
2905 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2906 ** attempting to create a package with a colliding nickname causes
2907 correctable errors to be signalled.
2908 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2909 ** several x86-64 backend bugs related to sign-extension of immediate
2912 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2913 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2914 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2916 * fixed loading of multiply forward-referenced layouts.
2917 (thanks to Cheuksan Wang)
2918 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2919 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2920 (see COMPILE-FILE documentation for details of :PRINT option)
2921 * fixed bugs 19 and 317: fixed-format floating point printing is
2922 more accurate. This also fixes a bug reported by Adam Warner
2923 related to the ~@F format directive.
2924 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2926 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2927 dispatch table if the from-char is a dispatch macro character.
2928 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2929 by the wordsize no longer ignore the last word. (reported by Lutz
2931 * fixed bug in type checking of dynamic-extent variables. (reported
2933 * optimization: sequence traversal functions use their freedom to
2934 coerce function designators to functions.
2935 * optimization: code with many calls to CLOS methods specialized on
2936 CLOS classes has had redundant type checks removed.
2937 * optimization: added declarations to speed up operations that access
2938 the internal character database (for example STRING-UPCASE)
2939 * optimization: comparison operations between floats and sufficiently small
2940 fixnums no longer create extra rationals
2941 * fixed some bugs related to Unicode integration:
2942 ** portions of multibyte characters at the end of buffers for
2943 character-based file input are correctly transferred to the
2944 start of the buffer at the next read.
2945 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2946 passing it through to OPEN.
2947 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2948 argument given to internal calls to OPEN.
2949 ** the built-in comment readers (introduced by character sequences
2950 ";" and "#|") are more forgiving to encoding errors; they will
2951 STYLE-WARN and then attempt to resync the stream at a character
2952 boundary. (thanks to Teemu Kalvas)
2953 * fixed some bugs in the x86-64 port:
2954 ** Negative short int return values from c-calls are sign-extended
2956 ** The stack is aligned to 16-bytes for c-calls, as required by
2957 the ABI. (thanks to Cheuksan Wang)
2958 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2959 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2960 for enums. (thanks to Vincent Arkesteijn)
2961 ** Multiple small optimizations and bugfixes for floating point
2963 * fixed some bugs revealed by Paul Dietz' test suite:
2964 ** Space, Tab, Linefeed, Return and Page have the invalid
2965 secondary constituent character trait.
2966 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2968 ** WITH-INPUT-FROM-STRING should only update the index place on
2970 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2971 works more reliably.
2972 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2973 with one-dimensional arrays with fill pointers.
2974 ** TYPE-OF failed on a complex with an integer realpart and a
2976 ** compiler failure during type inference for the code of form
2977 (IF (EQL X (THE ...)) ...) (MISC.535).
2979 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2980 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2981 platform. The port supports 61-bit fixnums, large memory spaces
2982 and reloading shared object files.
2983 * enhancement: saving cores with foreign code loaded is now
2984 supported on ppc/Darwin in addition to the previously supported
2986 * enhancement: the statistical profiler now walks deeper into the
2987 call stack for more meaningful call-graphs and accrued time
2988 reports (x86/x86-64 only). It also now reports time spent in
2990 * enhancement: it is now possible to trace most individual methods
2991 of a generic function in addition to tracing the generic function
2993 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2995 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2996 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2997 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2998 produces an error. (thanks to Vincent Arkesteijn)
2999 * bug fix: NAMESTRING on pathnames with :WILD components in their
3000 directories works correctly. (thanks to Artem V. Andreev)
3001 * fixed bug 125: compiler preserves identity of closures. (reported
3003 * bug fixed: functions with &REST arguments sometimes failed with
3004 "Undefined function" when compiled with (DEBUG 3). (reported by
3006 * bug fix: overflow during compiling of setting element of a bit
3007 vector with constant index and value. (reported by Timmy Douglas)
3008 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3009 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3010 * on x86 compiler partially supports stack allocation of dynamic-extent
3012 * GO and RETURN-FROM do not check the extent of their exit points
3013 when compiled with SAFETY 0.
3014 * fixed some bugs related to Unicode integration:
3015 ** encoding and decoding errors are now much more robustly
3016 handled; it should now be possible to recover even from invalid
3017 input or output to the terminal. (thanks to Teemu Kalvas)
3018 ** provided a first cut at implementing STRING-TO-OCTETS and
3019 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3020 ** altered the SB-MD5 contributed module slightly, changing the
3021 interface just enough for it to be supportable for builds where
3022 lisp characters are not eight bits.
3023 * fixed some bugs revealed by Paul Dietz' test suite:
3024 ** the FORMATTER-generated functions for ~V[ conditionals require
3025 the correct number of arguments.
3026 ** READ-FROM-STRING returns the mandated second value when applied
3027 to displaced strings.
3028 ** the #\Rubout and #\Backspace characters are treated as invalid
3029 constituent characters by the tokenizer.
3031 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3032 * new feature: reloading changed shared object files with
3033 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3034 * new feature: references to foreign variables and functions
3035 can now be compiled and loaded before the corresponding shared
3036 object file is loaded, as long as the foreign definitions are
3037 available at runtime.
3038 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3039 supported. (thanks to Dan Debertin)
3040 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3041 just keywords. (thanks to Vincent Arkesteijn)
3042 * fixed bug #331: structure-class instances corresponding to
3043 DEFSTRUCT forms are now created eagerly.
3044 * fixed bug #345: backtraces from calls to undefined functions work
3045 on x86 as well. Related bug #61 is now also partially fixed on x86
3046 (backtraces from throws to unknown catch tags.)
3047 * bug fix: lambda-list parsing is now stricter vrt. order and number
3048 of lambda-list keywords.
3049 * bug fix: as specified by AMOP, an error is signalled if a
3050 class-option appears multiple times in a DEFCLASS form. (reported
3052 * bug fix: RANDOM can be compiled when the compiler derives the type
3053 of its numeric argument as a disjoint set of small integers.
3054 (reported by Paul Dietz)
3055 * bug fix: starting a core saved with shared objects loaded when
3056 those objects are not available no longer causes threaded SBCL to
3057 hang. (reported by Sean Ross)
3058 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3060 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3061 argument, which must always be NIL. (reported by Kalle Niemitalo)
3062 * bug fix: printing 1.0d+23 no longer results in an error.
3063 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3064 * bug fix: structure slot setters preserve evaluation order. (thanks
3066 * fixed some bugs related to Unicode integration:
3067 ** RUN-PROGRAM can allow its child to take input from a Lisp
3068 stream. (reported by Stefan Scholl)
3069 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3070 locales. (reported by Ken Causey)
3071 * fixed some bugs revealed by Paul Dietz' test suite:
3072 ** INCF, DECF and REMF evaluate their place form as specified in
3074 ** FORMATTER expands ~{ ~} iteration directives with V or #
3075 parameters correctly.
3076 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3077 consequent uses no arguments correctly.
3078 ** the system has a partial understanding of the (COMPLEX RATIO)
3080 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3083 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3084 * new feature: a build-time option (controlled by the :SB-UNICODE
3085 keyword feature, enabled by default) for building the system with
3086 support for the entire 21-bit character space defined by the
3088 * new feature: the system now has rudimentary external-format
3089 support; the primary user-visible change at this time is that
3090 characters with the high bit set (such as lower-case-e-acute) will
3091 print correctly to a terminal in a UTF-8 environment.
3092 * minor incompatible change: BASE-CHAR no longer names a class;
3093 however, CHARACTER continues to do so, as required by ANSI.
3094 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3095 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3096 has been moved to the SB-EXT package (temporarily re-exported from
3098 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3099 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3101 * fixed bug #351: better error-handlind and reporting for malformed
3103 * fixed bug #350: bignum-printing is now more memory-efficient,
3104 allowing printing of very large bignums, eg. (expt 2 10000000).
3105 (reported by Bruno Haible)
3106 * fixed bug #302: better primitive-type selection for intersection
3108 * fixed bug #308: non-graphic characters now all have names, as
3109 required. (reported by Bruno Haible)
3110 * bug fix: redefining a class with different superclasses now correctly
3111 removes it from the direct-subclasses of its previous superclasses.
3112 (reported by David Morse)
3113 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3114 new value now works. (reported by Bruno Haible)
3115 * bug fix: correct canonicalization of multiple non-standard slot
3116 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3117 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3118 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3119 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3120 now exists, an signals an error.
3121 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3122 during macroexpansion for non-iteration variables as well. (reported
3123 by Bruno Haible for CMUCL)
3124 * bug fix: Cyclic structures and unprintable objects in compiler
3125 messages no longer cause errors. (reported by Bruno Haible)
3126 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3127 and READ-FROM-STRING all now return a primary value of NIL if
3128 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3129 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3130 (reported by Bruno Haible for CMUCL)
3131 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3132 do not designate a condition. (reported by Bruno Haible for
3134 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3135 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3136 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3137 permitting resolution in favour of any of the conflicting symbols.
3138 (reported by Bruno Haible for CMUCL)
3139 * bug fix: EQUAL compiler optimizations is less aggressive on
3140 strings which can potentially compare true despite having distinct
3141 specialized array element types.
3142 * bug fix: unit enumerations can be defined without dividing by
3143 zero. (thanks to Vincent Arkesteijn)
3144 * FORMAT compile-time argument count checking has been enhanced.
3145 (report from Bruno Haible for CMUCL)
3146 * a partial workaround for the bug 262: the compiler does not try to
3147 inline-expand a local function doing RETURN-FROM from a deleted
3148 BLOCK. (thanks to Peter Denno for the bug report and to David
3149 Wragg for the simple test case)
3150 * fixed some bugs revealed by Paul Dietz' test suite:
3151 ** RENAME-PACKAGE allows all package designators as new package
3153 ** constraint propagation and lambda variable substitution are
3154 more cautious in dealing with partially deleted code.
3155 ** compiler sometimes lost reoptimization passes.
3156 ** CERROR, given a condition as condition designator, passes its
3157 remaining arguments to the continue format control without
3159 ** Case-altering FORMAT directives work correctly on non-ASCII
3161 ** The REAL type specifier handles bounds outside the floating
3162 point ranges without signalling FLOATING-POINT-OVERFLOW.
3163 ** Functions with IR1-transformations can create intercomponent
3164 references to global functions.
3165 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3167 ** FORMAT ~R treats a nil value for its first parameter correctly.
3169 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3170 * enhancement: saving cores with foreign code loaded is now
3171 supported on x86/NetBSD and sparc/Linux in addition to the previously
3172 supported platforms.
3173 * bug fix: on some platforms repeated installations caused multiple
3174 copies of HTML documentation to be installed -- should not happen
3175 any more. (reported by Stefan Scholl)
3176 * bug fix: parsing self-recursive alien record types multiple times
3177 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3178 original patch by Helmut Eller for CMUCL)
3179 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3180 (thanks to Richard Kreuter)
3181 * bug fix: defining classes whose accessors are methods on existing
3182 generic functions in other (locked) packages no longer signals
3183 bogus package lock violations. (reported by François-René Rideau)
3184 * bug fix: special variables as DEFMETHOD parameters no longer have
3185 associated bogus type declarations. (reported by David Wragg and
3187 * bug fix: read-write consistency on streams of element-type
3188 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3189 * bug fix: redefiniton of the only method of a generic function with
3190 no DEFGENERIC no longer emits a full WARNING. In addition,
3191 redefinition of generic functions with no DEFGENERIC to an
3192 incompatible lambda list now signals an error. (thanks to Zach
3194 * bug fix: DEFGENERIC now works even when there's a function of the
3195 same name in an enclosing lexical environment. (thanks to Zach
3197 * fixed compiler failure, caused by instrumenting code during
3198 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3199 * optimization: added loop analysis and improved register allocation
3200 * fixed some bugs revealed by Paul Dietz' test suite:
3201 ** POSITION on displaced vectors with non-zero displacement
3202 returns the right answer.
3203 ** (SIMPLE-STRING) is a valid type specifier for sequence
3205 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3207 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3208 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3210 ** The justification version of the FORMAT ~< directive treats
3211 non-zero minpad parameter correctly.
3213 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3214 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3215 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3216 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3217 the supported interface.
3218 * new feature: Single-stepping of code compiled with DEBUG 2 or
3219 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3220 * new feature: saving cores with foreign code loaded is now
3221 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3222 Timothy Moore's work for CMUCL)
3223 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3224 parameters to * instead of NIL if no initform is supplied.
3225 (reported by Johan Bockgaard)
3226 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3227 correctly when FUNCALL appears as the car of the form. Note:
3228 despite this FUNCALL forms are not currently subject to
3229 compiler-macro expansion. (port of Raymond Toy's fix for the
3230 same from CMUCL, reported by Johan Bockgaard)
3231 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3232 (thanks for Teemu Kalvas)
3233 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3234 case instead of terminating the iteration (thanks for Julian
3235 Squires, Sean Champ and Raymond Toy)
3236 * bug fix: incorrect expansion of defgeneric that caused a style
3237 warning. (thanks for Zach Beane)
3238 * bug fix: slot accessor effective method computation works properly
3239 for classes with multiple non-standard applicable methods on
3240 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3241 * on x86 compiler supports stack allocation of results of LIST and
3242 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3243 CMUCL implementation by Gerd Moellmann)
3244 * fixed some bugs revealed by Paul Dietz' test suite:
3245 ** FORMAT strings with both the ~<~:;~> form of the justification
3246 directive and pretty-printing directives cause an error.
3248 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3249 * incompatible change: the internal functions
3250 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3251 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3252 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3253 instead of the old functions.
3254 * new feature: on platforms where "dladdr" is available foreign
3255 function names now appear in backtraces. (based on Helmut Eller's
3257 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3258 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3260 * documentation: ASDF manual is now distributed with SBCL.
3261 * bug fix: SBCL can now load its contributed modules with REQUIRE
3262 even if the system-provided entries have been removed from
3263 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3265 * bug fix: backtraces involving undefined functions or assembly
3266 routines are more informative. (thanks to Brian Downing)
3267 * bug fix: mutually referent alien structures now work correctly.
3268 (reported by Rick Taube)
3269 * bug fix: structures defined by WITH-ALIEN can be referred to
3270 within other definitions in the same WITH-ALIEN.
3271 * bug fix: division operators (MOD, TRUNCATE and the like) with
3272 constant zero divisors and integer dividends no longer generate
3274 * bug fix: provide default methods for INPUT-STREAM-P and
3275 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3276 * bug fix: improve the detection and resolution of MOP metacycles
3277 (where effective method computation depends on the generic function
3278 having its effective method computed). (reported by Bruno Haible)
3279 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3280 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3281 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3282 * bug fix: pathnames with relative directory components can be
3283 represented relative to default pathnames.
3284 * optimization: in taking the GCD of bignums, reduce the two bignums
3285 to approximately the same size (using Euclid's algorithm) before
3286 applying the more sophisticated binary GCD. (thanks to Juho
3288 * optimization: COUNT on bitvectors now operates word-at-a-time.
3289 * optimization: ASH with a positive, but not necessarily constant,
3290 (leftwards) shift, when in a modular context, is compiled to a
3292 * fixed some bugs revealed by Paul Dietz' test suite:
3293 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3294 if the corresponding argument is NIL.
3295 ** FORMAT directives accepting a minpad parameter treat negative
3297 ** literal commas as character parameters to FORMAT directives are
3299 ** literal spaces directly after ~<Newline> directives within a
3300 format-logical-block (~:< ~@:>) do not induce :FILL-style
3301 conditional newlines.
3302 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3303 as specified: it no longer includes conditional newlines).
3304 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3306 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3307 :PER-LINE-PREFIX argument does not evaluate to a string.
3309 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3310 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3311 the manual for details; for now, package locks can be disabled by
3312 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3313 if no major problems are found then it is likely that they will be
3314 compiled in unconditionally.
3315 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3316 unsupported operators on all platforms. To load a shared library
3317 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3318 object file, link it into a shared library outside of SBCL and
3319 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3321 * bug workaround: ROOM T and the GC were not working together
3322 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3323 reporting facility aren't preserved. That reporting has been
3324 disabled, so now until and unless someone figures out how to make it
3325 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3326 * minor incompatible change: as threatened around sbcl-0.8.0, the
3327 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3328 The symbols are also exported from SB-PCL for backwards
3329 compatibility, but more so than before SB-PCL should be treated as
3330 an implementation-internal package.
3331 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3333 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3334 It is known as of this release not to work on the Alpha, however.
3335 * fixed bug #167: errors signalled due to illegal syntax in method
3336 bodies are now more legible.
3337 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3338 designators and can hence be used with TYPEP.
3339 * fixed bug #333: CHECK-TYPE now ensures that the type error
3340 signalled, if any, has the right object to be accessed by
3341 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3342 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3343 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3345 * fixed bug #334: programmatic addition of slots using specialized
3346 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3347 and :ALLOCATION :CLASS slots.
3348 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3349 float exponents. (rereported by Peter Seibel)
3350 * fixed a bug: #\Space (and other whitespace characters) are no
3351 longer considered to be macro characters in standard syntax by
3352 GET-MACRO-CHARACTER.
3353 * fixed bug: initialization of condition class metaobjects no longer
3354 causes an instance of the condition to be created. (reported by
3356 * fixed bug: it is now possible to have slots such that
3357 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3358 description is neither :INSTANCE nor :CLASS.
3359 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3360 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3361 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3362 non-standard SLOT-DEFINITION-ALLOCATION values.
3363 * fixed bugs: various race conditions handling exiting threads.
3364 CL-PPCRE's thread torture test now passes.
3365 * fixed arguably-a-bug: GC time proportional to number of threads in
3366 system even when most of them are idle
3367 * optimization: improved performance of BIT and SBIT on bit-vectors.
3368 * .fasl file incompatibility: The fasl file version number has
3369 been incremented because of changes associated with package locks.
3371 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3372 * minor incompatible change: the system no longer provides
3373 optimization hints (conditions which are TYPEP
3374 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3375 mode; these hints are still emitted when higher SPEED optimization
3377 * new contrib module: a sampling profiler (profiling by statistical
3378 sampling, rather than by instrumenting functions) is available as
3379 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3380 * the behaviour of the standard function ED is now customizeable by
3381 third parties through a hook variable: see ED's documentation
3382 string for information on the protocol.
3383 * the compiler no longer emits efficiency notes for (FUNCALL X)
3384 when the type of X is uncertain under default optimization
3386 * fixed bug 276: mutating a binding of a specialized parameter to a
3387 method to something that is not TYPEP the specializer is now
3389 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3390 exhibit the required behaviour on the x86 platform. (thanks to
3391 Peter van Eynde, Eric Marsden and Bruno Haible)
3392 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3393 even for difficult arguments. (reported by Peter Graves)
3394 * fixed bug 141a: the backquote printer now descends quoted
3396 * fixed another bug in backquote printing: no more destructive
3397 modification of the form's list structure. (reported by Brian
3399 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3400 move between its address being taken and the call to
3401 interrupt_thread, fixing a crashing race condition.
3402 * the SB-POSIX contrib implementation has been adjusted so that it
3403 no longer exhibits ridiculously poor performance when constructing
3404 instances corresponding to C structs.
3406 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3407 * minor incompatible change: the sb-grovel contrib now treats C
3408 structures as alien (in the sense of SB-ALIEN) objects rather than
3409 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3410 has implications for memory management of client code
3411 (sb-grovel-returned objects must now be manually managed) and for
3412 type safety (alien objects now have full types).
3413 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3414 used to control emission of compiler diagnostics, rather than the
3415 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3416 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3417 quality should be considered deprecated.
3418 * install.sh now installs the user manual as well
3419 * (not quite a new documentable feature, but worth considering in
3420 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3421 beginnings of a semantically meaningful condition hierarchy is
3422 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3424 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3425 designator as the defaults argument.
3426 * fixed bug: Displaced arrays whose displaced-to array has become
3427 too small now cause ARRAY-DIMENSION to signal an error, providing
3428 for safer bounds-checking. (reported by Bruno Haible)
3429 * fixed bug: DEFCLASS slot definitions with identical :READER and
3430 :WRITER names now signal a reasonable error. (reported by Thomas
3432 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3434 * fixed bug: Invalid slot specification errors now print correctly.
3435 (thanks to Zach Beane)
3436 * fixed bug 320: Shared to local slot value transfers in class
3437 redefinitions now happen corrently from superclasses as
3438 well. (reported by Bruno Haible)
3439 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3441 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3442 improper lists correctly. (reported by Bruno Haible)
3443 * fixed bug 313: source-transform for <fun-name> was erroneously
3444 applied to a call of a value of a variable with name <fun-name>.
3445 (reported by Antonio Menezes Leitao)
3446 * fixed bug 307: The obsolete instance protocol ensures that
3447 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3448 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3449 remove dead unknown-values globs from the middle of the stack.
3450 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3451 easier to resume long computations after using *BREAK-ON-SIGNALS*
3452 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3453 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3454 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3455 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3456 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3457 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3459 * fixed a (fairly theoretical) bug in string printing: if
3460 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3461 does not have array-element-type equal to the most general string
3463 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3464 function name. (thanks to Nikodemus Siivola)
3465 * fixed bug: compile-time format string checker failed on
3466 non-closed ~{. (reported by Thomas F Burdick)
3467 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3468 don't warn on legal loop code involving more than one aggregate
3469 boolean. (thanks to Nikodemus Siivola)
3470 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3471 in keyword position to MAKE-PACKAGE was not being reported as
3473 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3474 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3476 * fixed bugs 280 and 312: the checking for multiple definitions in a
3477 file is less likely to become confused by uses of inline
3479 * fixed bug: the #S reader macro performs the keyword coercion
3480 specified for slot names. (reported by Kalle Niemitalo)
3481 * fixed bug: lambda lists may contain symbols whose names start with
3482 & but are not lambda-list-keywords; their occurrence triggers a
3484 * fixed bug 321: define-method-combination argument lambda lists do
3485 not cause invalid code to be generated when &optional or &aux
3486 variables have default values. (reported by Bruno Haible)
3487 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3488 have CLOS classes; this appears also to have fixed reported
3489 instability in stack exhaustion detection.
3490 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3491 MUFFLE-WARNING when no associated restart is present is now
3493 * optimization: rearranged the expansion of various defining macros
3494 so that each expands into only one top-level form in a
3495 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3497 * optimization: used a previously little-used slot in symbols to
3498 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3500 * fixed some bugs revealed by Paul Dietz' test suite:
3501 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3503 ** Fixed an optimization bug related to inheritance of initforms
3504 from local to shared slots.
3505 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3506 ** CAST optimizer forgot to flush argument derived type.
3507 ** print/read consistency on floats is now orders of magnitude
3508 more likely. (thanks also to Bruno Haible for a similar report
3510 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3511 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3512 for objects of type REAL. Make it so.
3513 ** SXHASH is specified (infelicitously) to respect similarity,
3514 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3515 it so. (thanks to Markus Ziegler)
3516 ** on the Alpha, the compiler succeeds in compiling functions
3517 returning a known number of arguments greater than 63.
3518 ** fixed handling of invalid NIL arguments in keyword position
3520 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3522 ** provided a readably-printable representation for RANDOM-STATE
3524 ** ensured that pathnames, where they have a namestring, always
3525 print using #P"..." syntax.
3527 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3528 * Support for the forthcoming 2.0 version of the NetBSD kernel
3529 running on x86 hardware has been added. (thanks to Perry
3530 E. Metzger most immediately, and others for their past work)
3531 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3532 current release version; SBCL's OpenBSD support had been broken
3533 since about the time of OpenBSD's switch to ELF binary format.)
3534 * [placeholder for DX summary]
3535 ** user code with &REST lists declared dynamic-extent, under high
3536 speed or space and low safety and debug optimization policy.
3537 * The manual has been converted to Texinfo format and the debugger
3538 chapter from the cmucl manual has been added.
3539 * A facility has been added to extract documentation strings from
3540 sbcl and store them as Texinfo-formatted snippets for inclusion in
3541 the manual (via Texinfo's @include directive)
3542 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3543 the test case to Dave Roberts)
3544 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3545 pointers. (reported by Sean Ross)
3546 * bug fix: PROFILE output is printed nicely even for large numerical
3547 values. (thanks to Zach Beane)
3548 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3549 greater than 32 handle EOF correctly.
3550 * bug fix: on X86 an immediate argument of the IMUL instruction is
3551 correctly printed in disassembly. (thanks to Lutz Euler)
3552 * bug fix: class slots in redefined classes preserve their old
3553 values. (thanks to Bruno Haible and Nikodemus Siivola)
3554 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3555 succeeds. (reported by Marco Baringer)
3556 * fixed some bugs revealed by Paul Dietz' test suite:
3557 ** READ-SEQUENCE now works on ECHO-STREAMs.
3558 ** RATIONALIZE works more according to its specification. (thanks
3561 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3562 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3563 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3564 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3565 should matter to you only if you rebind the printer control
3566 variables and then find you want different bindings in the
3567 debugger than in the ordinary execution of your program.)
3568 * The runtime build system has been tweaked to support building
3569 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3570 assembler and linker. (thanks to Nikodemus Siivola)
3571 * Unbound, undefined, undeclared variables now trigger full
3572 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3573 more often programmer error than deliberate exploitation of undefined
3575 * optimization: the hash algorithm for strings has changed to one
3576 that is less vulnerable to spurious collisions. (thanks to Juho
3578 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3579 needless bounds checking. (thanks to Juho Snellman)
3580 * optimization: implemented multiplication as a modular
3581 (UNSIGNED-BYTE 32) operation on the PPC backend.
3582 * fixed some bugs revealed by Paul Dietz' test suite:
3583 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3585 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3586 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3587 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3589 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3591 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3593 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3594 their output stream on EOF from read.
3595 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3596 have been read to end-of-file.
3597 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3599 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3600 description of determination of which consecutive characters
3602 ** Printing the "Space" character with escaping on now yields "#\\ ",
3603 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3604 ** Reading floating-point numbers with *READ-BASE* set to a number
3605 less than 10 works correctly.
3606 ** Reading floating-point numbers with *READ-BASE* set to a number
3607 more than 10 works correctly.
3608 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3609 the readtable currently in effect.
3611 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3612 * minor incompatible change: parsing of namestrings on a physical
3613 (Unix) host has changed; numbers after the final #\. in a
3614 namestring are no longer interpreted as a version field. This is
3615 intented to be largely invisible to the user, except that the
3616 meaning of the namestring "*.*.*" has changed: it now refers to a
3617 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3618 should usually be replaced by
3619 (make-pathname :name :wild :type :wild :version :wild)
3620 with the added benefit that this is more likely to be portable.
3621 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3622 option to OPEN now signals an error if the file being opened
3623 exists; this may have an impact on existing code.
3624 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3625 signals received, on the PowerPC platforms (both Linux and
3626 Darwin). (thanks to Pierre Mai for pointing out the location of
3628 * several fixes on OS X: The system now builds and runs cleanly on
3629 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3630 (thanks to Brian Mastenbrook)
3631 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3632 second-resolution: integer multiples of 1/3600 between -24 and 24.
3633 (thanks to Vincent Arkesteijn)
3634 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3635 type when called with 1 argument; PEEK-CHAR checked type of
3636 PEEK-TYPE only after having read first character from a
3637 stream. (reported by Peter Graves)
3638 * bug fix: the garbage collector now has much better locality
3639 behaviour, and in particular no longer treats all memory as being
3640 exhausted when many small objects point to each other in a deeply
3642 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3643 recognized as being TYPEP their class.
3644 * bug fix: the PUSHNEW documentation string has been corrected.
3645 (thanks to Vincent Arkesteijn)
3646 * bug fix: defaulting of the value for the last of an atypically
3647 large number of multiple values being bound was not being
3648 performed correctly on the Alpha or PPC platforms
3649 * optimization: implemented multiplication as a modular
3650 (UNSIGNED-BYTE 32) operation on the x86 backend.
3651 * optimization: SEARCH on simple-base-strings can now be open-coded.
3652 (see also contrib/compiler-extras.lisp for inspiration for
3653 teaching the compiler about the Boyer-Moore algorithm).
3654 * value, returned by MAX (and MIN) called with several EQUALP, but
3655 not EQL, arguments now does not depend on compiler settings.
3656 * fixed some bugs revealed by Paul Dietz' test suite:
3657 ** in stack analysis liveness information is propagated from
3658 non-local entry points.
3659 ** pathwise CAST removing failed when the CAST node did not start
3661 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3662 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3664 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3665 host is already defined.
3666 ** RENAME-FILE works on streams instead of signalling an internal
3668 ** PEEK-CHAR uses the current readtable when determining whether
3669 or not a character is whitespace.
3670 ** MERGE-PATHNAMES handles the case when the pathname does not
3671 specify a name while the default-pathname specifies a version.
3672 ** Pathnames now stand a better chance of respecting print/read
3674 ** Attempting to use standardized file system operators with a
3675 pathname with invalid :DIRECTORY components signals a
3677 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3679 ** DIRECTORY on logical pathnames is more correct.
3680 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3681 signal a TYPE-ERROR if their argument is not a stream.
3682 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3683 designator argument does not designate a stream.
3684 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3685 examining the synonym.
3686 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3688 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3689 element-type larger than ([UN]SIGNED-BYTE 32).
3691 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3692 * When built with the :SB-FUTEX feature, threaded builds now take
3693 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3694 for faster/more reliable mutex and condition variable support.
3695 * Incompatible change (but one you probably shouldn't have been using
3696 anyway): the interface and code for arbitrating between multiple
3697 threads in the same user session has been redesigned.
3698 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3699 error when called without an explicit environment argument.
3700 (thanks to Nikodemus Siivola)
3701 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3702 confused about their position. (thanks to Adam Warner and Gerd
3704 * bug fix: Pretty printing backquoted forms with unquotations in the
3705 argument list position of various code constructs such as LAMBDA
3706 now works correctly. (reported by Paul Dietz)
3707 * bug fix: Pretty printing unquotations no longer loses all
3708 stream position information.
3709 * optimization: performance of string output streams is now less
3710 poor for multiple small sequence writes.
3711 * optimization: performance of CSUBTYPEP in the presence of complex
3712 expressions involving CONS and NOT many times has been improved.
3713 (reported by Paul Dietz)
3714 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3716 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3717 streams for the REPL, for the debugger, and so on. (thanks to
3719 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3720 * fixed some bugs revealed by Paul Dietz' test suite:
3721 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3722 is ignored if it is too small, rather than propagating through
3723 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3724 ** extremely complex negations of CONS types were not being
3725 sufficiently canonicalized, leading to inconsistencies in
3727 ** VALUES tranformer lost derived type.
3729 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3730 * fixed a bootstrapping bug: the build process no longer assumes
3731 that the various BOOLE-related constants have the same value in
3732 host and target lisps. (noted by Paul Dietz' test suite on an
3733 SBCL binary built from CLISP)
3734 * The system can now be dynamically linked on the MIPS platform,
3735 which enables dynamic loading of foreign code from Lisp. (thanks
3736 to Ralf Baechle for discussions on the MIPS ABI)
3737 * The system now records debugging information for its own source
3738 files in a filesystem-position-independent manner, relative to
3739 the "SYS" logical host.
3740 * fixed a compiler bug: MV-LET convertion did not check references
3741 to the "max args" entry point. (reported by Brian Downing)
3742 * tweaked disassembly notes to be less confident about proclaiming
3743 some instruction as an LRA. (thanks to Brian Downing)
3744 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3745 now each have their own history, command character, and other
3746 characteristics. (thanks to David Lichteblau)
3747 * fixed some bugs revealed by Paul Dietz' test suite:
3748 ** compiler failure in compiling LOGAND expressions including a
3750 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3751 shift greater than 32.
3752 ** FLUSH-DEST did not mark blocks for type check regeneration.
3753 ** HANDLER-CASE failed to accept declarations in handler clauses
3754 in some circumstances.
3756 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3757 * New code in contrib/sb-introspect (still probably not entirely
3758 stable yet) provides some support for smart Lisp development
3759 environments like SLIME.
3760 * The conditions signalled for errors occurring when loading .fasl
3761 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3762 in a way which should help ASDF recover gracefully.
3763 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3764 stuff has been cleaned up. If you code contrib/ stuff, this might
3765 affect you, and you can look at contrib/README, contrib/STANDARDS,
3766 and/or the 0.8.4.27 diff to check.
3767 * In full calls the compiler now does not generate checks for declared
3768 argument types for all arguments.
3769 * various threading fixes
3770 ** and some experimental patches which didn't make it into
3771 the main tree for this release, but which are shipped in
3772 contrib/experimental-thread.patch as a possible fix for some
3773 failures (deadlock, spinning...) in GC-intensive multithreaded
3775 * fixed PPC build problem (source code incompatibility of different
3776 library versions): added offsetof() hackery which attempts to divine
3777 where glibc maintainers put uc_mcontext today
3778 * fixed bug 282: compiler does not trust type assertions while passing
3779 arguments to a full call.
3780 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3781 &OPTIONAL VALUES type parameter.
3782 * fix bug 214: algorithm for noting rejected templates is now more
3783 similar to that of template seletion. (also reported by rydis on
3785 * fixed bug 141b: printing backquoted information readably and prettily
3786 inserts a space where necessary.
3787 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3788 (CHARACTER 10) are now reported as errors, rather than propagated
3789 as unknown types. (reported by piso on #lisp)
3790 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3791 with values NIL and :ERROR. (thanks to Milan Zamazal)
3792 * fixed bug 191c: CLOS now does proper keyword argument checking as
3793 described in CLHS 7.6.5 and 7.6.5.1.
3794 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3795 longer raise an error; further, using a list as a for-as-arithmetic
3796 counter now raises a meaningful error.
3797 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3798 now understood by sequence creation functions such as MAKE-SEQUENCE
3800 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3801 a STRING-INPUT-STREAM.
3802 * compiler enhancement: SIGNUM is now better able to derive the type
3804 * type declarations inside WITH-SLOTS are checked. (reported by
3806 * fixed some bugs revealed by Paul Dietz' test suite:
3807 ** incorrect optimization of TRUNCATE for a positive first
3808 argument and negative second.
3809 ** compiler failure in let-convertion during flushing dead code.
3810 ** compiler failure while deriving type of TRUNCATE on an
3811 interval, containing 0.
3812 ** ASH of a negative bignum by a negative bignum count now returns
3814 ** intersection of CONS types now canonicalizes properly, fixing
3815 inconsistencies in SUBTYPEP.
3817 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3818 * incompatible change: The --disable-debugger command line
3819 option now clobbers the debugger at a more fundamental
3820 level, by redefining #'INVOKE-DEBUGGER instead of by
3821 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3822 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3823 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3824 enter the debugger REPL and then suffer recursive errors
3825 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3826 while under the new system, BREAK in --disable-debugger mode
3827 terminates the system just as an unhandled error would.
3828 * fixed compiler performance when processing loops with a step >1;
3829 * bug fix: DOCUMENTATION now retrieves generic function
3830 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3831 support has been systematized, and now supports the methods
3832 specified by ANSI, along with a default method and a method for
3833 slot documentation. (reported by Nathan Froyd)
3834 * bug fix: effective methods associated with a generic function are
3835 no longer cached over a change of that generic function's method
3836 combination. (reported by Andreas Fuchs)
3837 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3838 names a non-existent directory. (thanks to Andreas Fuchs)
3839 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3840 the PPC platform, lead to stack corruption; this has been fixed.
3841 (reported by Rainer Joswig)
3842 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3843 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3844 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3845 arithmetic in general, is now much more reliable on the PPC
3847 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3848 platform now returns the right answer.
3849 * optimization: restored some effective method precomputation in
3850 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3851 precomputation is now tunable.
3852 * optimization: compiler-internal data structure use has been
3853 reviewed, and changes have been made that should improve the
3854 performance of the compiler by about 20%.
3855 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3856 simple-base-strings and simple-bit-vectors is improved.
3857 * optimization: the optimization of 32-bit logical and arithmetic
3858 functions introduced in version 0.8.3 on the x86 has been
3859 implemented on the mips, ppc and sparc platforms; an
3860 implementation of the same facility, but for 64-bit arithmetic,
3861 has been added for the alpha.
3862 * microoptimization: the compiler is better able to make use of the
3863 x86 LEA instruction for multiplication by constants.
3864 * bug fix: in some situations compiler did not report usage of
3865 generic arithmetic in (SPEED 3) policy.
3866 * bug 145b fix: compiler used wrong type specifier while converting
3867 MEMBER-types to numeric.
3868 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3870 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3871 index argument now works properly on the Alpha platform.
3872 * bug fix: floating point exception treatment on the Alpha platform
3874 * bug fix: FILE-POSITION works much better on string input and
3875 output streams. (thanks to Nikodemus Siivola)
3876 * bug fix: many threading/garbage collection symptoms sorted.
3877 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3878 might be pseudo-atomic.
3879 * internal change: Stopping for GC is now done with signals not
3880 ptrace. GC is now done in whichever thread wanted it, instead of
3882 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3884 * bug fix: result form in DO is not contained in the implicit
3886 * incompatible change: ICR structure is changed; the value part of
3887 CONTINUATION is now called LVAR; corresponding functions are
3888 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3889 * added type deriver for ISQRT (thanks to Robert E. Brown).
3890 * bug fix: better support for loading from the command line when an
3891 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3893 * fixed some bugs revealed by Paul Dietz' test suite:
3894 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3895 ** ROUND and FROUND now give the right answer when given very
3896 small float arguments.
3897 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3899 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3900 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3901 ** LCM should return a non-negative integer.
3902 ** PARSE-INTEGER returned the index of a terminator instead of the
3903 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3904 ** PARSE-INTEGER returned an incorrect index being applied to a
3906 ** LCM with two arguments of 0 returns 0 rather than signalling
3908 ** unsigned addition of a 32-bit constant with the high bit set no
3909 longer causes an internal compiler error on the x86.
3910 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3911 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3912 with negative last argument.
3913 ** byte specifiers with zero size and position no longer cause
3914 an error during type derivation.
3915 ** bignum multiplication on the Alpha platform now returns the
3917 * porting: The system now builds on SuSE AMD64, although it still
3918 generates a 32-bit binary.
3919 * .fasl file incompatibility: The fasl file version number has
3920 been incremented (because of the changes to internal compiler
3921 data structures referred to above).
3923 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3924 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3925 more accurately, on the Darwin kernel running on PowerPC hardware.
3926 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3927 * Compiler code deletion notes now signal a condition of type
3928 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3929 an associated MUFFLE-WARNING restart.
3930 * The compiler now performs limited argument count validation of
3931 constant format strings in FORMAT, and where appropriate in ERROR,
3932 CERROR and WARN. (thanks to Gerd Moellmann)
3933 * New ASDF-INSTALL contrib can be used for automatic download and
3934 installation of third-party Lisp code from CCLAN or other sites
3936 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3937 which forces another thread to execute a function supplied by the
3939 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3940 now accept and act upon their :ELEMENT-TYPE keyword argument.
3941 (reported by Martin Atzmueller, Edi Weitz)
3942 * bug fix: FILE-POSITION now accepts position designators up to
3943 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3944 is the greater. (thanks to Patrik Nordebo)
3945 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3946 Kalle Olavi Niemitalo)
3947 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3948 printable. (reported by Eric Marsden)
3949 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3950 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3951 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3952 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3953 (thanks to Stig Sandoe)
3954 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3955 UNREAD-CHAR now correctly includes the unread character in the
3956 target sequence. (thanks to Gerd Moellmann)
3957 * bug fix in threaded builds: the system can now be suspended and
3958 resumed by shell job control with minimal disruption.
3959 * bug fixes in times and timezones >2038AD
3960 * better handling of "where is GNU make?" problem in build scripts
3961 (thanks to Nikodemus Siivola)
3962 * new optimization: inside a named function any reference to a
3963 function with the same name is considered to be a self-reference;
3964 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3965 optimization quality.
3966 * new optimization on x86: logical functions and + now have
3967 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3968 used when the result is truncated to 32 bits.
3969 * VALUES declaration is partially enabled.
3970 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3971 * fixed some bugs revealed by Paul Dietz' test suite:
3972 ** The system now obeys the constraint imposed by
3973 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3974 types form a lattice under type intersection.
3975 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3976 ** ASSOC now ignores NIL elements in an alist.
3977 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3978 and (1+ MOST-POSITIVE-FIXNUM) answers.
3979 ** The addition of a method with invalid qualifiers to a generic
3980 function does not cause an error to be signalled immediately;
3981 a warning is signalled, and the error is generated only on
3982 calling the generic function.
3983 * changed .fasl file version number, in part to add type codes for
3984 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3985 obscure ANSI requirements
3987 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3988 * fixed bug 148: failure to inline-expand a local function left
3989 garbage, confusing the compiler.
3990 * fixed bugs 3cd: structure slot readers perform type check if the
3991 slot can have an invalid value (i.e. it is either not initialized
3992 or can be written with a less specific slot writer).
3993 * bug fix: the compiler now traps array references to elements off
3994 the end of an array; previously, the bounds checking in some
3995 circumstances could go off-by-one.
3996 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3998 * type declarations for array element types now obey the description
3999 on the CLHS page "Declaration TYPE", as per discussions on
4000 sbcl-help around 2003-05-08. This means that a declaration
4001 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4002 declaration, all references to BAR will be asserted or assumed
4003 (with THE, so dependent on compiler policy) to involve objects of
4004 type FOO. Note that no such declaration is implied in
4005 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4006 * declared types of functions from the "Conditions"
4007 chapter. (reported by Paul Dietz)
4008 * bug fix: CERROR accepts a function as its first argument.
4009 * bug fix: NTH an NTHCDR accept a bignum as index
4010 arguments. (reported by Adam Warner)
4011 * optimization: character compare routines now optimize comparing
4012 against a constant character. (reported by Gilbert Baumann)
4013 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4014 argument now works properly on the MIPS platform.
4015 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4016 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4017 declared to have a functional type, does not cause an error
4019 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4020 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4021 * fixed bug: if last continuation of a deleted block has a
4022 destination, this destination should be deleted too. (reported by
4024 * fixed a bug in the bootstrap process: the host compiler's values
4025 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4026 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4027 test case from Patrik Nordebo)
4028 * improved the ability of the disassembler on the PPC platform to
4029 provide helpful disassembly notes.
4030 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4031 the class in more cases than previously.
4032 * bug fix: FILE-POSITION now understands :START and :END for
4033 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4034 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4035 8) data. (thanks to David Lichteblau)
4036 * bug fix: it is possible to add a method to a generic function
4037 without lambda list.
4038 * bug fix: reader failed to signal END-OF-FILE inside an
4039 object representation. (reported by Nikodemus Siivola)
4040 * fixed some bugs revealed by Paul Dietz' test suite:
4041 ** LAST and [N]BUTLAST should accept a bignum.
4042 ** condition slot accessors are methods.
4043 ** (VECTOR NIL) is a subtype of STRING.
4045 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4046 * minor incompatible change: some nonsensical specialized lambda
4047 lists (used in DEFMETHOD) which were previously ignored now signal
4049 * minor incompatible change: the system is now aware of the types of
4050 variables in the COMMON-LISP package, and will signal errors for
4051 most violations of these type constraints (where previously they
4052 were silently accepted).
4053 * minor incompatible change: COMPILE-FILE now uses the freedom
4054 afforded (ANSI 3.2.2.3) to use derived function types for
4055 functions defined in the same file. This also permits the system
4056 to warn on static type mismatches and function
4057 redefinition. (Currently it does not work with high DEBUG level.)
4058 * minor incompatible change: VALUES declaration is disabled.
4059 * When issuing notes, the compiler now signals a condition of type
4060 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4061 restart for use in user handlers. It is expected that the
4062 COMPILER-NOTE condition will eventually become a condition
4063 supertype to a hierarchy of note types, which will then be
4064 handleable in a similar fashion. However, at the moment, no such
4065 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4066 but it's an implementation detail, not a classification for the
4068 * Changes in type checking closed the following bugs:
4069 ** type checking of unused values (192b, 194d, 203);
4070 ** template selection based on unsafe type assertions (192c, 236);
4071 ** type checking in branches (194bc).
4072 * A short form of VALUES type specifier has ANSI meaning (it has
4073 increased the number of situations when SBCL cannot perform type
4075 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4076 keywords or constants is permissible.
4077 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4078 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4079 classes. (thanks to Antonio Martinez)
4080 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4081 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4082 argument to a pretty-print stream. Instead, it leaves any such
4083 operations to DESCRIBE-OBJECT methods.
4084 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4086 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4087 lambda lists. (thanks to David Lichteblau)
4088 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4089 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4090 (thanks to Gerd Moellmann)
4091 * fixed bug 246: increased compilation speed of long
4092 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4094 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4096 * DEFCONSTANT now throws a condition of type
4097 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4098 constant to a non-EQL value; CONTINUE and ABORT restarts
4099 respectively change and preserve the value.
4100 * fixed bug 63: The code walker, part of the implementation of CLOS,
4101 is now better at handling symbol macros.
4102 * bug fix: There is no longer an internal implementation type named
4103 CL:LENGTH. (reported by Raymond Toy)
4104 * bug fix: In macro-like defining macros/special operators the
4105 implicit block does not enclose the lambda list.
4106 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4107 enclosed in parentheses) are not suitable as type specifiers, and
4108 their use properly signals an error now.
4109 * bug fix: An argument count mismatch for a type specifier in code
4110 being compiled no longer causes an unhandled error at compile
4111 time, but signals a compile-time warning.
4112 * fixed simple vector readable printing
4113 * bug fix: DESCRIBE takes more care over whether the class
4114 precedence list slot of a class is bound before accessing it.
4115 (reported by Markus Krummenacker)
4116 * bug fix: FORMATTER can successfully compile pretty-printer format
4117 strings which use variants of the ~* directive inside.
4118 * bug fix: SEARCH now applies its TEST predicate to the elements of
4119 the arguments in the correct order. (thanks to Wolfhard Buss)
4120 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4121 in type inference. (thanks to Robert E. Brown)
4122 * bug fix: Reading in symbols with an explicit package name of ""
4123 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4124 * fixed some bugs revealed by Paul Dietz' test suite:
4125 ** NIL is now allowed as a structure slot name.
4126 ** Arbitrary numbers, not just REALs, are allowed in certain
4127 circumstances in LOOP for-as-arithmetic clauses.
4128 ** Multiple class redefinitions before slot access no longer
4129 causes a type error.
4130 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4131 association between the name and a class.
4132 ** Generic functions with non-standard method-combination and over
4133 five methods all of which return constants no longer return NIL
4134 after the first few invocations. (thanks to Gerd Moellmann)
4135 ** CALL-NEXT-METHOD with no arguments now passes the original
4136 values of the arguments, even in the presence of assignment.
4137 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4139 ** DISASSEMBLE works with closures and funcallable instances.
4140 ** ADD-METHOD now returns the generic function, not the new method.
4141 ** FIND-METHOD signals an error if the lengths of the specializers
4142 is incompatible with the generic function, even if the ERRORP
4144 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4145 which its argument is a member.
4146 ** DEFCLASS only redefines the class named by its class-name
4147 argument if that name is the proper name of the class;
4148 otherwise, it creates a new class.
4149 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4150 of the UNBOUND-SLOT condition to the name of the slot.
4151 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4152 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4153 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4154 SLOT-MAKUNBOUND in the specified fashion.
4156 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4157 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4158 cross-compilation host. As a consequence, we can now bootstrap our
4159 way up to SBCL starting with a bare gcc toolchain and human-readable
4160 source code (first the source to CLISP, then the source to SBCL).
4161 * A contributed module containing a partial implementation of the
4162 simple-streams interface has been included. (thanks to Rudi
4164 * A contributed module implementing the RFC1321 Message Digest
4165 Algorithm, known as MD5, has been included.
4166 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4167 no longer has any effect, as the code controlled by this feature
4168 has been deleted. (As far as we know, no-one has ever built using
4169 this feature, and its semantics were confused in any case).
4170 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4171 work on conditions (as required by the ANSI specification),
4172 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4173 expected behaviour on conditions. Users should note, however,
4174 that such behaviour is not required by the ANSI specification,
4175 and so use of this behaviour may render their code unportable.
4176 * fixed some bugs revealed by Paul Dietz' test suite:
4177 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4179 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4180 ** SXHASH on condition objects no longer returns NIL.
4181 ** :ALLOCATION :CLASS slots are better treated; their values are
4182 updated on class redefinition, and initforms inherited from
4183 superclasses are applied.
4184 ** REMOVE-METHOD returns its generic function argument even when
4185 no method was removed.
4186 ** SHARED-INITIALIZE now initializes the values of the requested
4187 slots, including those with :ALLOCATION :CLASS.
4188 ** ALLOCATE-INSTANCE now works on structure classes defined via
4189 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4191 ** SLOT-EXISTS-P now works on conditions, as well as structures
4193 ** MAKE-LOAD-FORM now has the required methods on
4194 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4195 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4196 keyword, and now implements the SLOT-NAMES argument.
4197 ** methods with &OPTIONAL arguments no longer allow too many
4198 arguments to be passed in the call without error.
4199 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4200 option is consistent with the required arguments of the generic
4201 function lambda list.
4202 * bug fix: REQUIRE accepts a string designator. (Thanks to
4204 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4205 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4206 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4207 * bug fix: The compiler now checks for duplicated variables in macro
4209 * bug fix: SETQ on globals returns the correct value.
4210 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4211 not a COMPILER-ERROR (followed by some other strange error on
4212 choosing the CONTINUE restart).
4213 * bug fix: make.sh and friends are now more consistent in the way that
4214 they look for GNU "make".
4216 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4217 * experimental native threads support (on x86 Linux >=2.4 only).
4218 This is not compiled in by default: you need to add :SB-THREAD to
4219 the target features. See the "Beyond ANSI" chapter of the manual
4221 * fix for longstanding nonANSIism: The old distinction between
4222 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4223 The return value from CL:FIND-CLASS is now a CLOS class, and
4224 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4225 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4226 * An interface to the MetaObject Protocol, as described in Kiczales,
4227 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4228 MIT Press, 1991, is available from the SB-MOP package.
4229 * incompatible change: the SB-PCL package should now be considered
4230 a private implementation detail, and no longer a semi-private MOP
4232 * minor incompatible change: due to rearrangement for threads, the
4233 control stack and binding stack are now allocated at arbitrary
4234 addresses instead of being hardcoded per-port. Users affected by
4235 this probably have to be doing advanced things with shared
4236 libraries, and will know who they are.
4237 * minor incompatible change: Previously, all --eval forms used were
4238 processed with READ before any of them were processed with EVAL.
4239 Now each --eval form is processed with both READ and EVAL before
4240 the next --eval form is processed. (Thus package operations like
4241 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4242 work as the user might reasonably expect.)
4243 * minor incompatible change: *STANDARD-INPUT* is now only an
4244 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4246 * minor incompatible change: Y-OR-N-P is now character-oriented,
4247 not line oriented. Also, YES-OR-NO-P now works without errors.
4248 (thanks to Antonio Martinez)
4249 * sb-aclrepl module improvements: an integrated inspector, added
4250 repl features, and a bug fix to :trace command.
4251 * Known functions, which cannot be open coded by the backend, are
4252 considered to be able to check types of their arguments. (fixing
4253 a bug report by Nathan J. Froyd)
4254 * fixed a bug in computing method discriminating functions: It is
4255 now possible to define methods specialized on classes which have
4256 forward-referenced superclasses. (thanks to Gerd Moellmann)
4257 * fixed evaluation order in optional entries (reported by Gilbert
4259 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4260 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4261 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4262 required-by-AMOP NAME argument, as well as CLASS and
4263 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4264 * fixed bug 20: DEFMETHOD can define methods using names that are
4265 not the proper names of classes to designate class specializers.
4266 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4267 Unix file descriptors, instead of blowing up. (thanks to Antonio
4269 * Garbage collection refactoring: user-visible change is that a
4270 call to the GC function during WITHOUT-GCING will not do garbage
4271 collection until the end of the WITHOUT-GCING. If you were doing
4272 this you were probably losing anyway.
4273 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4274 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4275 TYPEP the latter but not the former.
4276 * The compiler issues a full WARNING for calls to undefined functions
4277 with names from the CL package.
4278 * MAP-INTO for a vector destination is open coded. (reported by
4279 Brian Downing on c.l.l)
4280 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4281 documentation string.
4282 * fixed some bugs revealed by Paul Dietz' test suite:
4283 ** COPY-ALIST now signals an error if its argument is a dotted
4285 ** Condition slots are now accessed more correctly in the presence
4286 of multiple initargs for a given slot.
4287 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4288 exclude restarts of the same name associated with a different
4290 ** DEFCLASS of forward-referenced classes with another
4291 forward-referenced class in the superclasses list no longer
4293 ** Condition slots are now initialized once each, not multiple
4294 times. (thanks to Gerd Moellmann)
4295 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4297 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4298 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4299 arguments contain duplicated elements.
4300 ** RESTART-CASE understands local macros.
4301 ** RESTART-CASE associates exactly its own restarts with a condition.
4302 ** ENDP in safe mode checks its argument to be of type LIST.
4303 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4304 in question is unbound.
4305 ** Optimized MAKE-INSTANCE functions no longer cause internal
4306 assertion failures in the presence of duplicate initargs.
4307 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4308 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4309 propagated even in the ctor optimized implementation of
4311 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4313 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4314 * a better implementation of SXHASH on (simple) bit vectors,
4315 measured both in execution speed and in distribution of results
4316 over the positive fixnums, has been installed. Likewise, a better
4317 implementation of EQUAL for simple bit vectors is now available.
4318 * fixed CEILING optimization for a divisor of form 2^k.
4319 * fixed bug 240 (emitting extra style warnings "using the lexical
4320 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4321 by Antonio Martinez)
4322 * fixed SXHASH, giving different results for NIL depending on type
4323 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4324 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4325 variable. (found by Rolf Wester)
4326 * SBCL does not ignore type declarations for special
4327 variables. (reported by rif on c.l.l 2003-03-05)
4328 * some bug fixes in contrib/sb-aclrepl/
4329 * fixed some bugs revealed by Paul Dietz' test suite:
4330 ** a bug in the CONS type specifier, whereby the CAR and CDR
4331 types got intertwined, has been fixed;
4332 ** the type system is now able to reason about the interaction
4333 between INTEGER and RATIO types more completely;
4334 ** APPEND, [N]REVERSE and NRECONC check that those their
4335 arguments, which must be proper lists, are really so;
4336 ** An array specialized to be unable to hold elements has been
4337 implemented, as required -- yes, really -- by ANSI;
4338 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4339 on malformed property lists;
4341 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4342 * incompatible packaging change: in line with Unix convention,
4343 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4344 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4345 * REQUIRE and PROVIDE are now optionally capable of doing something
4346 useful. See the documentation string for REQUIRE.
4347 * infrastructure for a managed SBCL contrib system: contributed
4348 modules in this release include:
4349 ** the ASDF system definition facility;
4350 ** an interface to the BSD Sockets API;
4351 ** an ACL-like convenience interface to the repl;
4352 (thanks to Kevin Rosenberg)
4353 ** an implementation of ROTATE-BYTE, with efficient implementation
4355 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4356 gives a closer approximation to the right answer than previously.
4357 (thanks to Raymond Toy)
4358 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4359 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4360 optional environment arguments, as required by ANSI.
4361 * fixed bugs in other functions taking environment objects, allowing
4362 calls with an explicit NIL environment argument to be compiled
4364 * fixed bug 228: primary return values from
4365 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4366 COMPILE or FUNCTION.
4367 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4368 :TYPE will no longer signal errors on innocuous objects.
4369 * fixed bug 231b: SETQ is better at respecting type declarations in
4370 the lexical environment.
4371 * fixed a bug in DEFCLASS: classes named by symbols with no or
4372 unprintable packages can now be defined.
4373 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4374 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4375 * fixed compiler failure related to checking types of functions.
4376 (reported by Robert E. Brown)
4377 * the compiler is now much more consistent in its error-checking
4378 treatment of bounding index arguments to sequence functions: in
4379 (SAFETY 3) code, errors will be signalled in almost all cases if
4380 invalid sequence bounding indices are passed to functions defined
4381 by ANSI to operate on sequences.
4382 * fixed a bug in the build procedure: documentation of SBCL-specific
4383 packages is now preserved and available in the final Lisp image.
4384 * lifted FDEFINITION lookup out of loops in the implementation of
4385 many list operations. (thanks to Robert E. Brown)
4386 * fixed a bug in the reader: the #n# reader macro now works for
4387 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4388 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4389 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4390 E. Brown and Tony Martinez respectively)
4391 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4392 SLOT-BOUNDP: in particular, it is now able to optimize them much
4393 better, and is now not vulnerable to having packages renamed.
4394 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4395 always called when a slot is not present in an instance. (thanks
4397 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4398 longer signal an error on unreading a character following EOF on
4399 the previous constituent stream. (thanks to Tony Martinez)
4400 * fixed some bugs revealed by Paul Dietz' test suite:
4401 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4402 not just nonnegative fixnums;
4403 ** the logical bit-array operators such as BIT-AND now accept an
4404 explicit NIL for their "opt-arg" argument (to indicate a
4405 freshly-consed result bit-array);
4406 ** ELT now signals an error on an invalid sequence index in safe
4408 ** the type system is now cleverer about negations of numeric
4409 types, and consequently understands the BIGNUM and RATIO types
4411 ** the type system is now cleverer about the interaction between
4412 INTEGER and RATIO types: while bugs still remain, many more
4413 cases are accurately computed;
4414 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4415 if it is in the last clause;
4416 ** CONSTANTLY now correctly returns a side-effect-free function in
4418 ** DECLARE is no longer treated as a special-operator; in
4419 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4420 * incremented fasl file version number due to the change in the
4421 DEFSTRUCT-SLOT-DESCRIPTION structure.
4423 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4424 * minor incompatible change: code processed by the "interpreter" or
4425 EVAL now has a compilation optimization policy of (DEBUG 2)
4426 (changed from (DEBUG 1)) to improve debuggability of interactive
4427 development, and to allow the use of the debug RETURN command in
4429 * an experimental implementation of the RETURN command for the
4430 debugger has been included. (thanks to Frederik Kuivinen)
4431 * fixed bug 62: constraints were not propagated into a loop.
4432 * fixed bug in embedded calls of SORT (reported and investigated by
4434 * fixed some bugs revealed by Paul Dietz' test suite:
4435 ** printing and reading of arrays with some dimensions having
4436 length 0 (thanks to Gerd Moellmann);
4437 ** BOA constructor with &AUX argument without a default value does
4438 not cause a type error;
4439 ** CONSTANTP now returns true for all self-evaluating objects.
4441 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4442 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4443 accessors that are related by inheritance, as specified in the
4444 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4445 Valtteri Vuorikoski)
4446 * The compiler is now able to inline functions that were defined in
4447 a complex lexical environment (e.g. inside a MACROLET).
4448 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4450 * Support for the upcoming FreeBSD-5.0 release has been included.
4451 (thanks to Dag-Erling Smorgrav)
4452 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4453 effect when it is not in a toplevel context.
4454 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4455 stand a better chance of being correct. (thanks to Gerd
4457 * fixed bug in COERCE, which now signals an error on coercing a
4458 rational to a bounded real type which excludes the expected
4460 * The compiler is now able to derive types more accurately from the
4461 COERCE and COMPILE functions.
4462 * fixed bug 223: functional binding is considered to be constant
4463 only for symbols in the CL package.
4464 * fixed bug 231: SETQ did not check the type of a variable being set
4465 (reported by Robert E. Brown)
4466 * A new optimization for MAKE-INSTANCE has been included, fixing
4467 various bugs (including relating to :ALLOCATION :CLASS slots and
4468 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4470 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4471 ** As required by ANSI, LOOP now disallows anonymous collection
4472 clauses such as COLLECT I in conjunction with aggregate boolean
4473 clauses such as THEREIS (= I 1);
4474 ** LOOP now signals an error when any variable is reused in the
4475 same loop (including the potentially useful construct analogous
4476 to WITH A = 1 WITH A = (1+ A);
4477 ** IT is only a special loop symbol within the first clause of a
4478 conditional loop clause;
4479 ** LOOP with a typed iteration variable over a hashtable now
4480 signals a type error iff it should.
4481 * fixed some other bugs revealed by Paul Dietz' test suite:
4482 ** FILE-STREAM now names the class previously known as FD-STREAM;
4483 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4484 argument) no longer signals an error;
4485 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4486 of the slot symbol, rather than using the current package
4487 ((:CONC-NAME "") continues to intern the slot's name in the
4489 * incremented fasl file version number, because of the incompatible
4490 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4491 of the new implementation of DEFINE-COMPILER-MACRO.
4493 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4494 * Support for building SBCL for MIPS platforms running in
4495 little-endian mode has now been checked in, and basic
4496 functionality on said platforms verified.
4497 * minor incompatible change: PCL now records the pathname of a file
4498 in which methods and the like are defined, rather than its
4500 * minor incompatible change: TRUENAME now considers the truename of
4501 a file naming a directory to be the pathname with :DIRECTORY
4502 component indicating that directory.
4503 * minor incompatible change: a NAMED clause in the extended form of
4504 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4505 reason for the previous behaviour is unclear.
4506 * more systematization and improvement of CLOS and MOP conformance
4507 in PCL (thanks to Gerd Moellman and Pierre Mai):
4508 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4510 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4511 primary methods with no specializers;
4512 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4514 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4515 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4516 FORWARD-REFERENCED-CLASSes; error reporting on
4517 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4519 ** SXHASH on CLOS instances now uses a slot internal to the
4520 instance to return different numbers on distinct instances,
4521 while preserving the same return value through invocations of
4523 ** DEFMETHOD signals errors when methods with longer incongruent
4524 lambda lists are added to generic functions;
4525 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4526 CLASS, as specified in AMOP;
4527 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4528 on the order returned by the primary method for classes of
4529 class STANDARD-CLASS;
4530 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4531 * fixed some bugs shown by Paul Dietz' test suite:
4532 ** DOLIST puts its body in TAGBODY;
4533 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4535 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4536 value producing form;
4537 ** if more variables are given to PROGV than values, extra
4538 variables are bound and made to have no value;
4539 ** NSUBSTITUTE on list arguments gets the right answer with
4541 ** ELT signals an error of type TYPE-ERROR when the index argument
4542 is not a valid sequence index;
4543 ** LOOP signals (at macroexpansion time) an error of type
4544 PROGRAM-ERROR when duplicate variable names are found;
4545 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4546 ** FUNCALL of special-operators now cause an error of type
4548 ** PSETQ now works as required in the presence of side-effecting
4549 symbol-macro places;
4550 ** NCONC accepts any object as its last argument;
4551 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4553 ** loop-for-as-package does not require a package to be explicitely
4555 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4557 * fixed bug 166: compiler preserves "there is a way to go"
4558 invariant when deleting code.
4559 * fixed bug 172: macro lambda lists with required arguments after
4560 &REST arguments now cause an error to be signalled. (thanks to
4562 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4563 bug. (thanks to Matthew Danish)
4564 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4566 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4567 arguments are lexically rebound. (thanks to Gerd Moellmann and
4569 * fixed bug 194: error messages are now more informative when there
4570 is no primary method applicable in a call to a generic
4571 function. (thanks to Gerd Moellmann)
4572 * fixed bug in command line argument checking (thanks to Julian
4574 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4575 (thanks to Matthew Danish)
4576 * incremented fasl file version number, because of the
4577 SXHASH-related changes in the layout of CLOS data structures
4579 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4580 * minor incompatible change: The runtime (the Unix executable named
4581 "sbcl") is now much pickier about the .core files it will load.
4582 Essentially it now requires .core files to descend from the same
4583 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4584 as the runtime does. (The intent is to prevent the crashes which
4585 can occur, and which can even be reported as mysterious failures,
4586 when people patch the sources or change the build parameters
4587 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4588 sbcl and .core files.)
4589 * fixed bug: VALUES-LIST is no longer optimized away.
4590 * fixed bug 142: The FFI conversion of C string values to Lisp
4591 string values no longer conses excessively. (thanks to Nathan
4592 Froyd porting Raymond Toy's fix to CMU CL)
4593 * began to systematize and improve MOP conformance in PCL (thanks to
4594 Nathan Froyd, Gerd Moellman and Pierre Mai):
4595 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4597 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4598 ** FINALIZE-INHERITANCE is now called on class finalization;
4599 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4600 argument precedence order.
4601 * fixed bug 202: The compiler no longer fails on functions whose
4602 derived types contradict their declared type.
4603 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4604 so it can be non-toplevel.
4605 * The fasl file version number has changed (because of the new
4606 implementation of DEFMACRO).
4607 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4608 safe code, that any length requirement by their type-specifier
4609 argument is valid. The exceptions to this are described in bug
4611 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4612 functions now check the types of their inputs as required by ANSI.
4613 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4614 introduced symbol is DECLAREd to be SPECIAL.
4615 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4616 * fixed bug: :COUNT argument to sequence functions may be negative
4617 * fixed bug: body of DO-SYMBOLS may contain declarations
4618 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4619 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4620 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4621 symbol macro only once
4622 * fixed printing of call frame when argument list is unavailable
4623 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4624 * compiler no longer signals WARNING on unknown keyword
4627 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4628 * A beta-quality port to the mips architecture running Linux,
4629 based on the old CMUCL backend, has been made. It has been tested
4630 on a big-endian kernel, and works sufficiently well to be able to
4631 rebuild itself; it has not been tested in little-endian mode.
4632 * fixed an inconsistency between gencgc.c and purify.c which made
4633 dumping/loading .core files unreliable
4634 * fixed bug 120a: The compiler now deals correctly with IFs where
4635 the consequent is the same as the alternative, instead of
4636 misderiving the return type. (thanks to Alexey Dejneka)
4637 * fixed bug 113: Logical pathnames are now dumpable (the logical
4638 host is resolved at load-time, throwing an error if it is not
4640 * fixed bug 174: FORMAT's error message is slightly clearer when a
4641 non-printing character is used in a format directive.
4642 * fixed several bugs in compiler checking of type declarations, i.e.
4643 violations of the Python "declarations are assertions" principle
4644 (thanks to Alexey Dejneka)
4645 * fixed several bugs in PCL's error checking (thanks to Gerd
4647 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4649 * fixed bug in compilation of functions as first class values
4650 (thanks to Antonio Martinez-Shotton)
4651 * The compiler's handling TYPE-ERRORs which it can prove will
4652 inevitably happen at runtime has been cleaned up and corrected
4653 in several ways. (thanks to Alexey Dejneka)
4654 * improved argument type checking for various basic arithmetic
4655 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4656 lavished on them in the past that they can be compiled in many
4657 ways in different special cases
4658 * fixed bug 181: compiler checks validity of user supplied type
4660 * cleaned up code flushing in optimization: Function calls which
4661 should signal errors for safety purposes (e.g. which ANSI says
4662 should signal errors when their arguments are of incorrect type)
4663 are no longer optimized away.
4664 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4665 * incremented fasl file version number, because changes in the
4666 implementation of sequence functions like COERCE caused
4667 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4668 in old inline expansions) to become undefined. (Actually these
4669 changes were later undone, so we might very well be binary
4670 compatible with 0.7.7 after all, but leaving the version number
4671 incremented seemed like the simplest and most conservative
4674 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4675 * An alpha-quality port to the parisc architecture running Linux,
4676 based on the old CMUCL backend, has been made. This, even more so
4677 than the other backends, should be considered still a work in
4678 progress; known problems include that the Linux kernel in 64-bit
4679 mode does not propagate the correct sigcontext structure to
4680 userspace, and consequently SBCL on a parisc64 kernel will not
4682 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4683 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4684 suppressed.) Also now that the compiler is looking at declarations
4685 in the environment, it checks optimization declarations as well,
4686 and suppresses inlining when (> DEBUG SPEED).
4687 * More fixes have been made to treatment of floating point exception
4688 treatment and other Unix signals. In particular, floating point
4689 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4690 * The detection and handling of control stack exhaustion (infinite
4691 or very deeply nested recursion) has changed. Stack exhaustion
4692 detection is now done by write-protecting pages at the OS level
4693 and applies at all optimization settings; when found, a
4694 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4695 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4696 be caught using IGNORE-ERRORS.
4697 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4698 correctly when transforming recursive LABELS functions to LETs.
4699 (thanks to Alexey Dejneka)
4700 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4701 that are names of constants or global variables.
4702 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4703 alien routines with docstrings.
4704 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4705 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4707 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4708 (thanks to Eric Marsden)
4709 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4710 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4711 * Bug fix: The SPARC backend can now compile functions involving
4712 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4713 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4714 to a functions expecting a PATHNAME-DESIGNATOR.
4715 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4716 lambda lists. (thanks to Alexey Dejneka)
4717 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4718 functions so that EXPORTing the name of the class doesn't cause
4719 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4720 to Antonio Martinez for reporting this)
4721 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4722 constant-folded without failing an assertion. (thanks to Einar
4723 Floystad Dorum for reporting this)
4724 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4725 types are now dealt with more correctly by the compiler.
4726 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4727 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4728 behaviour analogous to RENAME-FILE. This puts its behaviour more
4729 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4731 * The fasl file version number has changed again. (because of the
4732 bug fix involving the names of PCL MAKE-INSTANCE functions)
4734 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4735 * bug fix: Floating point exceptions are treated much more
4736 consistently on the x86/Linux and PPC/Linux platforms.
4737 * Array initialization with :INITIAL-ELEMENT is now much faster for
4738 cases when the compiler cannot open code the array creation, but
4739 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4740 array accesses have also seen a speed increase.
4741 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4742 specified. (This was at the root of some bad interactions between
4743 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4745 * bug fix: Internal error arguments for undefined functions are now
4746 computed correctly on the PPC/Linux platform.
4747 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4748 Raymond Toy's patch for CMU CL)
4749 * Support for the Solaris 9 operating environment has been included
4750 (thanks to Daniel Merritt)
4751 * A very ugly but hopefully complete draft of the missing FFI chapter
4752 of the manual has been created by reformatting the corresponding
4753 CMU CL manual chapter into (currently very ugly and incoherent)
4754 DocBook and bringing it up to date for SBCL behavior. Thus, the
4755 manual is now essentially complete, at least by my extreme
4756 once-and-only-once standards, whereby it's acceptable to refer to
4757 the doc strings of SB-EXT functions as the primary documentation.
4758 * The fasl file version number has changed again, due to cleanup of
4759 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4760 is no longer a static symbol.)
4762 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4763 * SBCL now builds with OpenMCL (version 0.12) as the
4764 cross-compilation host; also, more progress has been made toward
4765 bootstrapping under CLISP.
4766 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4768 * bug 158 fixed: The compiler can now deal with integer loop
4769 increments different from 1; fixing this turned out also to fix
4771 * bug 169 fixed: no more bogus warnings about using lexical bindings
4772 despite the presence of perfectly good SPECIAL declarations (thanks
4773 to David Lichteblau)
4774 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4775 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4776 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4778 * bug 180 fixed: Method combination specifications no longer ignore
4779 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4780 * bug fix: Structure type predicate functions now check their argument
4781 count as they should.
4782 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4783 correctly. (thanks to Pierre Mai)
4784 * minor incompatible change: The --noprogrammer option is deprecated
4785 in favor of the new --disable-debugger option, which is very similar.
4786 (The major difference is that it takes effect at a slightly different
4787 time at startup, causing handling of errors in --sysinit and
4788 --userinit files will be affected differently.) The
4789 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4790 been added to allow this functionality to be controlled from ordinary
4791 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4792 maintainers, who might want to run non-interactive scripts to
4793 build SBCL cores which will later be used interactively.)
4794 * minor incompatible change: The LOAD function no longer, when given
4795 a wild pathname to load, loads all files matching that pathname.
4796 Instead, an error of type FILE-ERROR is signalled.
4798 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4799 * bug 147 fixed: The compiler preserves its block link/count
4800 invariants more correctly now so that it doesn't crash. (thanks
4802 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4804 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4805 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4806 no-value-for-this-character as NIL (as specified by ANSI).
4807 * HOST-NAMESTRING on physical pathnames now returns a string that is
4808 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4809 (thanks to Christophe Rhodes)
4810 * The Alpha port handles icache flushing more correctly. (thanks to
4812 * More progress has been made toward bootstrapping under CLISP. (thanks
4813 to Christophe Rhodes)
4814 * The fasl file format has changed again, because dynamic loading
4815 on OpenBSD (which has non-ELF object files) motivated some cleanups
4816 in the way that foreign symbols are transformed and passed around.
4817 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4818 is no longer treated as whitespace by the reader, but instead as
4819 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4820 |A
\7fB|, instead of A as it used to.
4822 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4823 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4824 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4825 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4826 this as of 0.7.1.45, but was left out of the previous news section
4827 (thanks to Dan Barlow)
4828 * SBCL now runs on the Solaris operating system on SPARC architectures
4829 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4830 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4831 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4832 * SPARC backend cleanups, allowing builds of cores optimized for V8
4833 and V9 SPARCS, and also emission of code targeted to a particular
4834 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4836 * SBCL is closer to bootstrapping under CLISP, thanks to various
4837 fixes by Christophe Rhodes.
4838 * The fasl file format has changed again, to allow the compiler's
4839 INFO database to support symbol macros.
4840 * The user manual (in doc/) is formatted into HTML more nicely.
4841 (thanks to coreythomas)
4842 * The system is smarter about SUBTYPEP relationships, especially
4843 those involving NOT types (including types such as ATOM which are
4844 represented internally using NOT types). Thus SUBTYPEP is less
4845 likely to return (VALUES NIL NIL) in general, and in particular
4846 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4848 * The fasl file format has changed again, because the internal
4849 representation of types now includes a new slot to support the new
4850 SUBTYPEP-of-NOT-types logic.
4851 * (not a change in the main branch of SBCL, but a related prototype
4852 which can hopefully be merged into the main branch of SBCL in the
4853 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4854 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4855 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4856 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4857 dispatch macro character combinations. (thanks to Alexey Dejneka)
4858 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4859 that superficially look like logical namestrings correctly.
4860 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4862 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4863 default supplied-p) for &optional and &key arguments. (thanks to
4866 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4867 * incompatible change: The compiler is now less aggressive about
4868 tail call optimization, doing it only when (> SPACE DEBUG) or
4869 (> SPEED DEBUG). (This is an incompatible change because there are
4870 programs which relied on the old CMU-CL-style behavior to optimize
4871 away their unbounded recursion which will now die of stack overflow.)
4872 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4873 for non-GENCGC systems has been increased to 20M (since that
4874 seems much closer to the likely performance optimum for modern
4875 systems than the old 4M value was)
4876 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4877 and *DEBUG-PRINT-LEVEL*
4878 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4879 of CMU CL's support for SPARC, and various endianness and other
4880 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4881 * new syntactic sugar for the Unix command line: --load foo.bar is now
4882 an alternate notation for --eval '(load "foo.bar")'.
4884 ** The system now detects stack overflow and handles it gracefully,
4885 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4886 optimization settings. (This is a good thing in general, and
4887 its introduction in this version should be particularly timely
4888 for anyone whose code fails because of suppression of tail
4890 ** The system now hunts for the C variable "environ" in a more
4891 devious way, to avoid segfaults when the C library version differs
4892 between compile time and run time. (thanks to Christophe Rhodes)
4893 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4894 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4895 ** The compiler no longer issues bogus style warnings for undefined
4896 classes in the same source file as the DEFCLASSes which defined
4897 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4899 ** fixes in CONDITION class precedence list for undefined function
4900 errors (thanks to Alexei Dejneka)
4901 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4902 correctly. (thanks to Dan Barlow)
4903 ** portability fixes aiming at bootstrapping under CLISP (thanks
4904 to Dave McDonald and Christophe Rhodes)
4905 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4906 ** fixes in type translation and and type inference (thanks to
4908 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4909 ** various fixes in the new ports (thanks to Dan Barlow)
4910 * several changes related to debugging:
4911 ** suppression of tail recursion, as noted above
4912 ** stack overflow detection, as noted above
4913 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4914 is now the default. (For some time encapsulation has been more
4915 reliable than the breakpoint-based :ENCAPSULATE NIL
4916 implementation, at least on X86 systems; and I just noticed that
4917 encapsulation also seems closer to the spirit of the ANSI
4920 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4922 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4923 up properly again. (There was a packaging bug in 0.7.0 which
4924 left their definitions in SB-SYS::LOAD-FOREIGN and
4925 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4926 vital for most things which interface to C-level interfaces,
4927 like extensions working with sockets or databases or
4928 Perl-compatible regexes or whatever, and the need to fix
4929 this bug is the main reason that 0.7.1 was released so
4931 ** DEFGENERIC is now choosier about the methods it redefines, so that
4932 reLOADing a previously-LOADed file containing DEFGENERICs does
4933 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4934 cycle now works as it should. (thanks to Alexey Dejneka)
4935 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4936 fixed by Christophe Rhodes. (He actually submitted this patch
4937 months ago, and I delayed until after 0.7.0.)
4938 ** Bug 111 (internal compiler confusion about runtime checks on
4939 FUNCTION types) was fixed by Alexey Dejneka.
4940 * Some internal cleanups (getting rid of variables which aren't
4941 needed now that the byte interpreter is gone) caused the fasl
4942 file format number to change again.
4944 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4945 * major incompatible change: The default fasl file extension, i.e. the
4946 default extension for files produced by COMPILE-FILE, has changed
4947 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4949 ** There are many changes in the implementation of the compiler.
4950 SBCL is now essentially a compiler-only implementation of ANSI
4951 Common Lisp. EVAL still "interprets" a few special cases, but
4952 almost all the interesting cases are handled by creating
4953 a LAMBDA expression, calling COMPILE on it, then calling
4954 FUNCALL on the result.
4955 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4956 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4957 Since the code is newer, there might still be some new bugs
4958 (though not as many as before Martin Atzmueller's fixes:-). But
4959 the new code is substantially simpler and clearer, and hopefully
4960 any remaining bugs will be simpler, less fundamental, and more
4961 fixable then the bugs in the old code.
4962 ** The revised compiler is still a little unsteady on its feet.
4964 *** The debugging information it produces (particularly the names
4965 of FUNCTION objects) is sometimes much less useful than what
4966 the old compiler produced.
4967 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4968 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4969 within a MACROLET) has been temporarily weakened.
4970 ** There are new compiler optimizations for various functions:
4971 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4972 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4973 *** the math functions TRUNCATE, FLOOR, and CEILING
4974 *** the function-of-all-trades COERCE
4975 Mostly these should be transparent, but there's one
4976 potentially-annoying problem (bug 117): when the compiler
4977 inline-expands a function and does type analysis on the result,
4978 it can create control paths which have type mismatches, and
4979 when it can't prove that those control paths aren't taken,
4980 it will issue WARNINGs about the type mismatches. This is
4981 a particular problem in practice for the new sequence functions.
4982 It's not clear how this should be fixed, and for now, a
4983 workaround is given in the entry for 117 in the BUGS file.
4984 ** (Because of the interaction between the two previous items --
4985 occasional inlining problems and new inline expansions -- some
4986 of the new sequence function optimizations won't really kick in
4987 completely until debugging information, and then inlining, are
4988 straightened out in some future version.)
4989 * minor incompatible changes:
4990 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4991 DIRECTORY no longer implicitly promotes NIL slots of its
4992 pathname argument to :WILD. In particular, when you ask for the
4993 contents of a directory (which you used to be able to do without
4994 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4995 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4996 ** changes in behavior that ANSI explicitly defines to be
4997 implementation dependent:
4998 *** The new compiler-only implementation still conforms with ANSI,
4999 but acts a little different than before. Besides the obvious
5000 changes in performance tradeoffs (that the cost per form passed
5001 to EVAL has gone up, and the cost per form executed by EVAL
5002 has gone down), the behavior of the system changes a little
5003 because there are no longer any interpreted function objects.
5004 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5005 e.g. doing COMPILE on the output of interactive DEFUN is
5007 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5009 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5010 has changed from (:CL) to NIL.
5011 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5012 e.g. #\Newline and #\Tab, don't have names specified in the
5013 ANSI Common Lisp standard, is now based on their ASCII symbolic
5014 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5015 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5016 are no longer used for output.
5017 ** changes in internal implementation constants:
5018 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5019 4 million. (If your application spends a lot of time GCing and
5020 you have a lot of RAM, you might want to experiment with
5021 increasing it even more.)
5022 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5023 However, almost all old code should still continue to work without
5024 immediate update, as SB-C-CALL is now a (deprecated) nickname
5026 ** Old operator names in the style DEF-FOO are now deprecated in
5027 favor of new corresponding names DEFINE-FOO, for consistency with
5028 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5029 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5030 internal symbols, but a few supported extensions like
5031 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5032 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5033 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5034 etc. as you get deeper into recursive calls to the debugger
5035 command loop, instead of the old "5]", "5]]", "5]]]"
5036 sequence. (I was motivated to do this when squabbles between
5037 ILISP and SBCL left me very deeply nested in the debugger. In the
5038 short term, this change will probably provoke more ILISP/SBCL
5039 squabbles, but hopefully it will be an improvement in the long run.)
5040 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5041 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5042 function, since declaiming return types involving aliens is
5043 (1) annoyingly messy to do by hand and (2) vital to efficient
5044 compilation of code which calls such functions.
5045 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5046 longer reexported by the SB-EXT package. They're solely useful
5047 for alien code, so it seems more logical that you should get
5048 them from the SB-ALIEN package, not in SB-EXT.
5049 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5050 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5051 features. Instead, the code that they used to control is always
5052 built into the system.
5053 * many other bug fixes
5054 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5055 advantage of the new EVAL-WHEN stuff and to clean them up in
5056 general, and they are now more ANSI-compliant in a number of
5057 ways. Martin Atzmueller is responsible for a lot of this.
5058 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5060 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5061 *** correct ERROR type for various file operations
5062 *** some fixes for Lisp streams
5063 *** DEFMETHOD syntax checking
5064 *** changing old weird representation of debug information as
5065 strings (which, among their other deficiencies, don't transform
5066 correctly when you rename packages, and don't change their
5067 print representation when you change things like *PACKAGE*
5068 and *PRINT-LENGTH*) to symbols and lists of symbols
5069 He also made several improvements and fixed several bugs in DESCRIBE.
5070 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5072 *** misbehavior of WRITE-STRING/WRITE-LINE
5073 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5074 and several other LOOP problems as well
5075 *** DIRECTORY when similar filenames are present
5076 *** DEFGENERIC with :METHOD options
5077 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5078 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5079 *** argument ordering in FIND with :TEST option
5080 *** mishandled package designator argument in APROPOS-LIST
5081 *** various problems in the backquote readmacro
5082 *** a bug in APROPOS
5083 *** probably some others that I'm not describing very well here,
5084 since the CVS log documents them by reference to sbcl-devel
5085 messages, and the SourceForge archives aren't working well.:-(
5086 ** Dan Barlow improved the Alpha port (and is making progress on the
5087 PPC port, for those of you who think different).
5088 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5089 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5090 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5091 continues to work on the SPARC port (for those of you in a position
5092 to look down upon our little PC-compatible boxes from a great height).
5093 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5094 and uses that copy, rather than the current dynamic value, when
5095 it's trying to decide whether to truncate output. Thus e.g.
5096 (let ((*print-lines* 50))
5097 (pprint-logical-block (stream nil)
5099 (let ((*print-lines* 8))
5100 (print (aref possiblybigthings i) stream)))))
5101 should now truncate the logical block only at 50 lines, instead of
5102 often truncating it at 8 lines, as it did before.
5103 * The doc/cmucl/ directory, containing old CMU CL documentation
5104 from the time of the fork, is no longer part of the base system.
5105 SourceForge has shut down its anonymous FTP service, and with it
5106 my original plan for distributing the old CMU CL documentation
5107 there. For now, if you need these files you can download an old
5108 SBCL source release and extract them from it.
5109 * The fasl file version number changed again, for dozens of reasons,
5110 some of which are apparent above.
5112 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5113 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5114 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5115 patch, so that DISASSEMBLE output is much nicer.
5116 * The code in the SB-PROFILE package now seems reasonably stable.
5117 I still haven't decided what the final interface should look like
5118 (I'd like PROFILE to interact cleanly with TRACE, since both
5119 facilities use function encapsulation) but if you have a need
5120 for profiling now, you can probably use it successfully with
5121 the current CMU-CL-style interface.
5122 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5123 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5124 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5125 link now returns the dangling link itself, and for similar
5126 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5127 link itself. (In these cases the old code signalled an error and
5128 looped endlessly, respectively.) Thus, DIRECTORY now works even
5129 in the presence of dangling and cyclic symbolic links.
5130 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5131 is now a supported extension again, since the consensus on
5132 sbcl-devel was that it can be useful for ordinary development
5133 work, not just for debugging SBCL itself.
5134 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5135 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5136 that currently-defined functions might be redefined later with
5137 different return types.
5138 * Hash tables can be printed readably, as inspired by CMU CL code
5139 of Eric Marsden and SBCL code of Martin Atzmueller.
5140 * better error handling in CLOS method combination, thanks to
5141 Martin Atzmueller porting Pierre Mai's CMU CL patches
5142 * more overflow fixes for >16Mbyte I/O buffers
5143 * A bug in READ has been fixed, so that now a single Ctrl-D
5144 character suffices to cause end-of-file on character streams.
5145 In particular, now you only need one Ctrl-D at the command
5146 line (not two) to exit SBCL.
5147 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5149 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5150 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5151 does the right thing.
5152 * The implementation of some type tests, especially for CONDITION
5153 types, is now tidier and maybe faster, due to CMU CL code
5154 originally by Douglas Crosher, ported by Martin Atzmueller.
5155 * Some math functions have been fixed, and there are new
5156 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5157 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5158 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5159 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5160 likely to be built into sbcl-0.7.0.)
5161 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5162 CL, ported to SBCL by Martin Atzmueller)
5163 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5164 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5165 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5166 * There's a new slam.sh hack to shorten the edit/compile/debug
5167 cycle for low-level changes to SBCL itself, and a new
5168 :SB-AFTER-XC-CORE target feature to control the generation of
5169 the after-xc.core file needed by slam.sh.
5170 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5171 COMPILE-FILE is no longer supported, so that now every function
5172 gets an entry point, so that block compilation looks a little
5173 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5174 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5175 returns the number of bytes consed since the system started,
5176 rather than the number consed since the first time the function
5177 was called. (The new definition parallels ANSI functions like
5178 CL:GET-INTERNAL-RUN-TIME.)
5179 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5180 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5181 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5182 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5183 * Fasl file version numbers are now independent of the target CPU,
5184 since historically most system changes which required version
5185 number changes have affected all CPUs equally. Similarly,
5186 the byte fasl file version is now equal to the ordinary
5189 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5190 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5191 is no longer recognized. I apologize for this, because it was
5192 listed in SB-EXT as a supported extension, but I found that
5193 its existing behavior was poorly specified, as well as incorrectly
5194 specified, and it looked like too much of a mess to straighten it
5195 out. I have enough on my hands trying to get ANSI stuff to work..
5196 * many patches ported from CMU CL by Martin Atzmueller, with
5197 half a dozen bug fixes in pretty-printing and the debugger, and
5198 half a dozen others elsewhere
5199 * fixed bug 13: Floating point infinities are now supported again.
5200 They might still be a little bit flaky, but thanks to bug reports
5201 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5202 as flaky as they were.
5203 * The --noprogrammer command line option is now supported. (Its
5204 behavior is slightly different in detail from what the old man
5205 page claimed it would do, but it's still appropriate under the
5206 same circumstances that the man page talks about.)
5207 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5208 are now supported, and enabled by default. Thus, the compiler can
5209 handle many floating point and complex operations much less
5210 inefficiently. (Thus e.g. you can implement a complex FFT
5212 * The compiler now detects type mismatches between DECLAIM FTYPE
5213 and DEFUN better, and implements CHECK-TYPE more correctly, and
5214 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5215 thanks to patches from Martin Atzmueller.
5216 * various fixes to make the cross-compiler more portable to
5217 ANSI-conforming-but-different cross-compilation hosts (notably
5218 Lispworks for Windows, following bug reports from Arthur Lemmens)
5219 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5220 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5221 fixed thanks to Pierre Mai's CMU CL patches.
5222 * fixes to keep the system from overflowing internal counters when
5223 it tries to use i/o buffers larger than 16M bytes
5224 * fixed bug 45a: Various internal functions required to support
5225 complex special functions have been merged from CMU CL sources.
5226 (When I was first setting up SBCL, I misunderstood a compile-time
5227 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5228 * improved support for type intersection and union, fixing bug 12
5229 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5230 more obscure bugs as well
5231 * some steps toward byte-compiling non-performance-critical
5232 parts of the system, courtesy of patches from Martin Atzmueller
5233 * Christophe Rhodes has made some debian packages of sbcl at
5234 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5235 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5236 stable, but are nonetheless usable. When he's ready, I'd be happy
5237 to add them to the SourceForge "File Releases" section. (And if
5238 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5239 * new fasl file format version number (because of changes in
5240 internal representation of (OR ..) types to accommodate the new
5241 support for (AND ..) types, among other things)
5243 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5244 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5246 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5248 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5249 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5250 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5251 * DESCRIBE now works on structure objects again.
5252 * Most function call argument type mismatches are now handled as
5253 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5254 know whether the function will be redefined before the call is
5255 executed. (The compiler could flag local calls with full WARNINGs,
5256 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5257 it doesn't keep track of enough information to know whether calls
5258 are local in this sense.)
5259 * Compiler output is now more verbose, with messages truncated
5260 later than before. (There should be some supported way for users
5261 to override the default verbosity, but I haven't decided how to
5262 provide it yet, so this behavior is still controlled by the internal
5263 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5264 src/compiler/ir1util.lisp.)
5265 * Fasl file format version numbers have increased again, because
5266 support for the Gray streams extension changes the layout of the
5267 system's STREAM objects.
5268 * The Gray subclassable streams extension now works, thanks to a
5269 patch from Martin Atzmueller.
5270 * The full LOAD-FOREIGN extension (not just the primitive
5271 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5272 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5273 but like most other programs, it defaults to copying the Unix
5274 environment from the original process instead of starting the
5275 new process in an empty environment.
5276 * Extensions which manipulate the Unix environment now support
5277 an :ENVIRONMENT keyword option which doesn't smash case or
5278 do other bad things. The CMU-CL-style :ENV option is retained
5279 for porting convenience.
5280 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5281 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5283 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5285 * A patch from Martin Atzmueller seems to have solved the SIGINT
5286 problem, and as far as we know, signal-handling now works cleanly.
5287 (If you find any new bugs, please report them!)
5288 * The system no longer defaults Lisp source file names to types
5289 ".l", ".cl", or ".lsp", but only to ".lisp".
5290 * The compiler no longer uses special default file extensions for
5291 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5292 seems to expect a single default extension for all compiled code,
5293 and there's no compelling reason to try to stretch the standard
5294 to allow two different extensions.) Instead, byte-compiled files
5295 default to the same extension as native-compiled files.
5296 * Fasl file format version numbers have increased again, because
5297 a rearrangement of internal implementation packages made some
5298 dumped symbols in old fasl files unreadable in new cores.
5299 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5300 many fewer weird special cases.
5301 * Bug #17 (differing COMPILE-FILE behavior between logical and
5302 physical pathnames) has been fixed, and some related misbehavior too,
5303 thanks to a patch from Martin Atzmueller.
5304 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5305 by Tim Moore, ported to SBCL by Martin Atzmueller.
5306 * Martin Atzmueller fixed several filesystem-related problems,
5307 including bug #36, in part by porting CMU CL patches, which were
5308 written in part by Paul Werkowski.
5309 * More compiler warnings in src/runtime/ are gone, thanks to
5310 more patches from Martin Atzmueller.
5311 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5314 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5316 * DESCRIBE now works on CONDITION objects.
5317 * The debugger now handles errors which arise when trying to print
5318 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5320 * The build system now uses an additional file, customize-target-features.lisp,
5321 to allow local modifications to the target *FEATURES* list. (The point of
5322 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5323 debugging features enabled, without having to worry about propagating it
5324 into everyone's system when I do a "cvs update".) When no
5325 customize-target-features.lisp file exists, the target *FEATURES* list
5326 should be constructed the same way as before.
5327 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5328 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5329 warn about behavior which is undefined under the ANSI spec. Note: This
5330 is specified by ANSI, but it's not very popular with programmers.
5331 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5332 macro in the SBCL sources for an example of a workaround which you
5333 might use to make portable ANSI-standard code which does what you want.
5334 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5335 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5336 when it's used as a non-toplevel form. (This is required in order
5337 to implement the DEFCONSTANT-EQX macro.)
5338 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5339 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5340 funny things, due to bugs in the implementation of EVAL-WHEN
5341 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5342 non-toplevel DEFCONSTANTs are uncommon.)
5343 * The core file version number and fasl file version number have been
5344 incremented, because the old noncompliant DEFCONSTANT behavior involved
5345 calling functions which no longer exist, and because I also took the
5346 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5347 * fixed bug 1 (error handling before read-eval-print loop starts), and
5348 redid debugger restarts and related debugger commands somewhat while
5350 ** The QUIT debugger command is gone, since it did something
5351 rather different than the SB-EXT:QUIT command, and since it never
5352 worked properly outside the main toplevel read/eval/print loop.
5353 Invoking the new TOPLEVEL restart provides the same functionality.
5354 ** The GO debugger command is also gone, since you can just invoke
5355 the CONTINUE restart directly instead.
5356 ** The TOP debugger command is also gone, since it's redundant with the
5357 FRAME 0 command, and since it interfered with abbreviations for the
5359 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5361 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5362 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5363 some porting work by Martin Atzmueller)
5364 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5365 with a boatload of patches which he ported to SBCL. Now that those
5367 ** The system tries to make sure that its low-priority messages
5368 are prefixed by semicolons, to help people who like to use
5369 syntax highlighting in their ILISP buffer. (This patch
5370 was originally due to Raymond Toy.)
5371 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5372 patches originally written by Raymond Toy.
5373 ** The compiler understands coercion between single-value and
5374 multiple-VALUES type expressions better, getting rid of some very
5375 weird behavior, thanks to patches originally by Robert MacLachlan
5376 and Douglas Crosher.
5377 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5378 lambda lists, thanks to a patch originally by Pierre Mai.
5379 ** The system no longer bogusly warns about "abbreviated type
5381 ** The compiler gets less confused by inlining and RETURN-FROM,
5382 thanks to some patches originally by Tim Moore.
5383 ** The system no longer hangs when dumping circular lists to fasl
5384 files, thanks to a patch originally from Douglas Crosher.
5385 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5386 undefined function error.
5387 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5388 in structure slot initforms) for now, documented workaround instead:-|
5389 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5390 * fixed bug 5: added stubs for various Gray stream functions called
5391 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5392 installed, at least appropriate type errors are generated
5393 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5394 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5395 consistently in DEFMETHOD forms.
5396 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5397 it doesn't seem to affect SBCL after all
5398 * The C runtime system now builds with better optimization and many
5399 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5401 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5403 * The system is now under CVS at SourceForge (instead of the
5404 CVS repository on my home machine).
5405 * The new signal handling code has been tweaked to treat register
5406 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5407 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5408 downstream, e.g. in debug-int.lisp, has implicit dependencies
5409 on the unsignedness of integer representation of machine words,
5410 and that caused the system to bomb out with infinite regress
5411 when trying to recover from type errors involving signed values,
5412 e.g. (BUTLAST '(1 2 3) -1).)
5413 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5414 (This was one of the bugs Peter Van Eynde reported back in July.)
5415 * The system now uses code inspired by Colin Walters' O(N)
5416 implementation of MAP (from the cmucl-imp@cons.org mailing
5417 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5418 inline the MAP operation, and there is more than one
5419 sequence argument to the MAP call (so that it can't just
5420 do ETYPECASE once and for all based on the type of the
5421 single sequence argument). (The old non-inline implementation
5422 of the general M-argument sequence-of-length-N case required
5423 O(M*N*N) time when any of the sequence arguments were LISTs.)
5424 * The QUIT :UNIX-CODE keyword argument has been renamed to
5425 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5426 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5428 * Raymond Wiker's patches to port dynamic loading from Linux to
5429 FreeBSD have been added.
5430 * The BUGS file is now more nearly up to date, thanks in large part
5431 to Martin Atzmueller's review of it.
5432 * The debugger now flushes standard output streams before it begins
5433 its output ("debugger invoked" and so forth).
5434 * The core version number and fasl file version number have both
5435 been incremented, because of incompatible changes in the layout
5437 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5438 used to not be called for a saved Lisp image.)
5439 * Martin Atzmueller's version of a patch to fix a compiler crash,
5440 as posted on sbcl-devel 13 September 2000, has been installed.
5441 * Instead of installing Martin Atzmueller's patch for the
5442 compiler transform for SUBSEQ, I deleted the compiler transform,
5443 and transforms for some similar consing operations.
5444 * A bug in signal handling which kept TRACE from working on OpenBSD
5446 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5447 away by constant folding
5448 * The system now defines its address space constants in one place
5449 (in the Lisp sources), and propagates them automatically elsewhere
5450 (through GENESIS and the sbcl.h file). Therefore, patching the
5451 address map is less unnecessarily tedious and error-prone. The
5452 Lisp names of address space constants have also been systematized.
5453 * CVS tags like dollar-Header-dollar have been removed from
5454 the sources, because they have never saved me trouble and
5455 they've been source of trouble working with patches and other
5456 diff-related operations.
5457 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5458 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5460 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5462 * The system has been ported to OpenBSD.
5463 * The system now compiles with a simple "sh make.sh" on the systems
5464 that it's supported on. I.e., now you no longer need to tweak
5465 text in the target-features.lisp-expr and symlinks in src/runtime/
5466 by hand, the make.sh takes care of it for you.
5467 * The system is no longer so grossly inefficient when compiling code
5468 involving vectors implemented as general (not simple) vectors (VECTOR T),
5469 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5470 which dares to use the various sequence functions on non-simple
5471 vectors, takes less of a performance hit.
5472 * There is now a primitive type predicate VECTOR-T-P
5473 to test for the (VECTOR T) type, so that e.g.
5474 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5475 can now be compiled with some semblance of efficiency. (The old code
5476 turned the type declaration into a full call to %TYPEP at runtime!)
5477 * AREF on (VECTOR T) is still not fast, since it's still compiled
5478 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5479 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5480 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5481 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5482 without making full calls to SUBTYPEP at runtime.
5483 (Some analogous efficiency issues for non-simple vectors specialized to
5484 element types other than T, or for non-simple multidimensional arrays,
5485 have not been addressed. They could almost certainly be handled the
5486 same way if anyone is motivated to do so.)
5487 * The changes in array handling break binary compatibility, so
5488 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5489 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5490 instead of (VALUES T T).
5491 * By following the instructions that Dan Barlow posted to sbcl-devel
5492 on 2 July 2000, I was able to enable primitive dynamic object
5493 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5494 functionality is not implemented (since it calls ld to resolve
5495 library references automatically, requiring RUN-PROGRAM for its
5496 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5497 try to resolve library references) is now supported.
5498 * The system now flushes the standard output streams when it terminates,
5499 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5500 them at several other probably-convenient times, e.g. in each pass of
5501 the toplevel read-eval-print loop, and after evaluating a form given
5502 as an "--eval" command-line option. (These changes were motivated by a
5503 discussion of stream flushing issues on cmucl-imp in August 2000.)
5504 * The source transform for TYPEP of array types no longer assumes
5505 that an array whose element type is a not-yet-defined type
5506 is implemented as an array of T, but instead punts, so that the
5507 type will be interpreted at runtime.
5508 * There is now some support for cross-compiling in make.sh: each of
5509 the phases of make.sh has its own script. (This should be transparent
5510 to people doing ordinary, non-cross-compile builds.)
5511 * Since my laptop doesn't have hundreds of megabytes of memory like
5512 my desktop machine, I became more motivated to do some items on
5513 my to-do list in order to reduce the size of the system a little:
5514 ** Arrange for various needed-only-at-cold-init things to be
5515 uninterned after cold init. To support this, those things have
5516 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5517 symbols with such names are now uninterned after cold init).
5518 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5519 fasl files for cold load.
5520 ** Remove the old compiler structure pooling code (which used to
5521 be conditional on the target feature :SB-ALLOC) completely.
5522 ** Redo the representation of some data in cold init to be more compact.
5523 (I also looked into supporting byte compiled code at bootstrap time,
5524 which would probably reduce the size of the system a lot, but that
5525 looked too complicated, so I punted for now.)
5526 * The maximum signal nesting depth in the src/runtime/ support code has
5527 been reduced from 4096 to 256. (I don't know any reason for the very
5528 large old value. If the new smaller value turns out to break something,
5529 I'll probably just bump it back up.)
5530 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5532 * Many, many bugs reported by Peter Van Eynde have been added to
5533 the BUGS list; some have even been fixed.
5534 * While enabling dynamic object file loading, I tried to make the
5535 code easier to understand, renaming various functions and variables
5536 with less ambiguous names, and changing some function calling
5537 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5538 * While trying to figure out how to do the OpenBSD port, I tried to
5539 clean up some of the code in src/runtime/. In particular, I dropped
5540 support for non-POSIX signal handling, added various comments,
5541 tweaked the code to reduce the number of compilation warnings, and
5542 renamed some files to increase consistency.
5543 * To support the new automatic configuration functionality in make.sh,
5544 the source file target-features.lisp-expr has been replaced with the
5545 source file base-target-features.lisp-expr and the machine-generated
5546 file local-target-features.lisp-expr.
5547 * fixed a stupid quoting error in make.sh so that using CMU CL
5548 "lisp -batch" as cross-compilation host works again
5550 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5552 * DESCRIBE no longer tries to call itself recursively to describe
5553 bound/fbound values, so that it no longer fails on symbols which are
5554 bound to themselves (like keywords, T, and NIL).
5555 * DESCRIBE now works on generic functions.
5556 * The printer now prints less-screwed-up representations of closures
5557 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5558 * A private symbol is used instead of the :EMPTY keyword previously
5559 used to mark empty slots in hash tables. Thus
5560 (DEFVAR *HT* (MAKE-HASH-TABLE))
5561 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5562 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5563 now does what ANSI says that it should. (You can still get
5564 similar noncompliant behavior if bang on the hash table
5565 implementation with all the symbols you get back from
5566 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5567 This breaks binary compatibility, since tests for equality to
5568 :EMPTY are wired into things like the macroexpansion of
5569 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5571 * There's now a minimal placeholder implementation for CL:STEP,
5572 as required by ANSI.
5573 * An obscure bug in the interaction of the normal compiler, the byte
5574 compiler, inlining, and structure predicates has been patched
5575 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5576 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5578 * Missing ordinary arguments in a macro call are now detected even
5579 when the macro lambda list contains &KEY or &REST.
5580 * The debugger no longer complains about encountering the top of the
5581 stack when you type "FRAME 0" to explicitly instruct it to go to
5582 the top of the stack. And it now prints the frame you request even
5583 if it's the current frame (instead of saying "You are here.").
5584 * As specified by ANSI, the system now always prints keywords
5585 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5587 * The default initial SIZE of HASH-TABLEs is now smaller.
5588 * Type information from CLOS class dispatch is now propagated
5589 into DEFMETHOD bodies, so that e.g.
5590 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5592 is now basically equivalent to
5593 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5594 (DECLARE (TYPE SINGLE-FLOAT X))
5596 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5597 operation, without having to do run-time type dispatch.
5598 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5599 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5600 * Since I don't seem to be making big file reorganizations very often
5601 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5602 is overflowing my ability to conveniently back them up), I've finally
5603 checked the system into CVS. (The CVS repository is on my home system,
5604 not at SourceForge -- putting it on SourceForge might come later.)
5605 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5606 high-level GC-NOTIFY-FOO functions send their output. (There's
5607 still very little control of where low-level verbose GC functions
5608 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5609 less than it used to -- the GC-NOTIFY-FOO functions are now under
5610 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5611 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5612 in only one place in the source code, and propagates it automatically
5613 everywhere that it's needed. Thus e.g. when I bump the version from
5614 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5615 * The C source files now include boilerplate legalese and documentation
5616 at the head of each file (just as the Lisp source files already did).
5617 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5618 to his page will be replaced with a link to his new CLiki service.
5620 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5622 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5623 * The build process now looks for GNU make under the default name "gmake",
5624 instead of "make" as it used to. If GNU make is not available as "gmake"
5625 on your system, you can change this default behavior by setting the
5626 GNUMAKE environment variable.
5627 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5628 can build without error under CMU CL.
5630 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5632 * There is now a partial SBCL user manual (with some new text and some
5633 text cribbed from the CMU CL manual).
5634 * The beginnings of a profiler have been added (starting with the
5635 CMU CL profiler and simplifying and cleaning up). Eventually the
5636 main interface should be through the TRACE macro, but for now,
5637 it's still accessed through vaguely CMU-CL-style functions and macros
5638 exported from the package SB-PROFILE.
5639 * Some problems left over from porting CMU CL to the new
5640 cross-compilation bootstrap process have been cleaned up:
5641 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5642 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5643 part when getting rid of the compiler *BACKEND* stuff.)
5644 ** The value of *NULL-TYPE* was screwed up, because it was
5645 being initialized before the type system knew the final
5646 definition of the 'NULL type. This screwed up several key
5647 optimizations in the compiler, causing inefficiency in all sorts
5648 of places. (I found it because I wanted to understand why
5649 GET-INTERNAL-RUN-TIME was consing.)
5650 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5651 PROCLAIM FTYPE information. Unfortunately this broke binary
5652 compatibility again, since now the forms output by DEFGENERIC
5653 to refer to functions which didn't exist in 0.6.3.
5654 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5655 can use the new (as of 0.6.3) transform for SOME into MAP into
5657 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5658 values to (INTEGER 0 1000000), so that the time code will no longer
5659 occasionally get blown up by Linux returning 1000000 microseconds
5660 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5661 its output conform to the ANSI spec. (Alas, this makes its output
5662 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5663 * A full call to MAP NIL with a single sequence argument no longer conses.
5664 * fixes to problems pointed out by Martin Atzmueller:
5665 * The manual page no longer talks about multiprocessing as though
5666 it were currently supported.
5667 * The ILISP support patches have been removed from the distribution,
5668 because as of version 5.10.1, ILISP now supports SBCL without us
5669 having to maintain patches.
5670 * added a modified version of Raymond Toy's recent CMU CL patch for
5671 EQUALP comparison of HASH-TABLE
5673 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5675 * The system still can't cross-compile itself with
5676 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5677 entails), but at least it can compile more of itself that way
5678 than it used to be able to, and various buglets which were uncovered
5679 by trying to cross-compile itself that way have now been fixed.
5680 * This release breaks binary compatibility again. This time
5681 at least I've incremented the FASL file format version to 2, so that the
5682 problem can be detected reliably instead of just causing weird errors.
5683 * various new style warnings:
5684 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5685 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5686 ** using the lexical binding of a variable named in the *FOO* style
5687 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5688 as specified by ANSI.
5689 * *RANDOM-STATE* is no longer automatically initialized from
5690 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5691 default behavior of the system is to repeat its behavior every time
5692 it's run. If you'd like to change this behavior, you can always
5693 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5694 old convention there was no comparably easy way to get the system to
5695 repeat its behavior every time it was run.
5696 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5697 FTYPE declarations has been removed, in favor of their ANSI
5698 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5699 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5700 the types of their sequence arguments can be determined at compile time.
5701 This is done through a new open code expansion for MAP which eliminates
5702 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5703 argument types can be determined at compile time.
5704 * The optimizer now transforms COERCE into an identity operation when it
5705 can prove that the coerced object is already of the correct type. (This
5706 can be a win for machine generated code, including the output of other
5707 optimization transforms, such as the MAP transform above.)
5708 * Credit information has been moved from source file headers into CREDITS.
5709 * Source file headers have been made more standard.
5710 * The CASE macro now compiles without complaining even when it has
5713 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5715 * (Note that the way that the PCL macroexpansions were rewritten
5716 to accommodate the change in DEFGENERIC below breaks binary
5717 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5718 not run under sbcl-0.6.2. Once we get out of alpha releases,
5719 i.e. hit release 1.0.0, we'll probably try to maintain binary
5720 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5721 and sbcl-1.4.4. Until then, however, it might be fairly common
5722 for maintenance releases to break binary compatibility.)
5723 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5725 * The reporting of unhandled signals has been changed to print some
5726 explanatory text as well as the report form. (Previously only
5727 the report form was printed.)
5728 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5729 it defines, so that the compiler no longer issues undefined function
5730 warnings for compiled-but-not-yet-loaded generic functions.
5731 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5732 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5733 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5734 section of the ANSI spec are supported.
5735 * The "" nickname for the "KEYWORD" package has been removed.
5736 The reader still handles symbol tokens which begin with a package marker
5737 as keywords, but it doesn't expose its mechanism for doing so in the
5738 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5739 * The system now issues STYLE-WARNINGs for contradictory TYPE
5740 proclamations. (Warnings for contradictory FTYPE proclamations would
5741 be nice too, but those can't be done usefully unless the type system
5742 is made smarter about FUNCTION types.)
5743 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5744 systematized, so that "*target-*.lisp is supposed to exist only on the
5745 target and imply that there's a related file which exists on the
5746 host, and *host-*.lisp is supposed to exist only on the host and imply
5747 that there's a related file which exists on the target. This involves a
5748 lot of renaming. Hopefully the acute confusion caused by the renaming
5749 will be justified by the reduction in chronic confusion..
5750 ** runtime-type.lisp -> early-target-type.lisp
5751 ** target-type.lisp -> late-target-type.lisp
5752 ** early-host-format.lisp -> early-format.lisp
5753 ** late-host-format.lisp -> late-format.lisp
5754 ** host-error.lisp -> misc-error.lisp
5755 ** early-error.lisp -> early-target-error.lisp
5756 ** late-error.lisp -> late-target-error.lisp
5757 ** host-defboot.lisp -> early-defboot.lisp
5758 ** code/misc.lisp -> code/target-misc.lisp
5759 ** code/host-misc.lisp -> code/misc.lisp
5760 ** code/numbers.lisp -> code/target-numbers.lisp
5761 ** code/early-numbers.lisp -> numbers.lisp
5762 ** early-host-type.lisp -> early-type.lisp
5763 ** late-host-type.lisp -> late-type.lisp
5764 ** host-typep.lisp -> typep.lisp
5765 ** load.lisp -> target-load.lisp
5766 ** host-load.lisp -> load.lisp
5767 ** host-disassem.lisp -> disassem.lisp
5768 ** host-insts.lisp -> insts.lisp
5769 ** byte-comp.lisp -> target-byte-comp.lisp
5770 ** host-byte-comp.lisp -> byte-comp.lisp
5771 ** host-signal.lisp -> signal.lisp
5772 ** host-defstruct.lisp -> defstruct.lisp
5773 ** late-target-type.lisp -> deftypes-for-target.lisp
5774 Furthermore, several other previously target-only files foo.lisp (e.g.
5775 hash-table.lisp and random.lisp) have been split into a target-and-host
5776 foo.lisp file and a target-only target-foo.lisp file, with their key type
5777 definitions in the target-and-host part, so that the cross-compiler will
5778 know more about target types.
5779 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5780 gone away. In their place are various *BACKEND-FOO* variables
5781 corresponding to the slots of the old structure.
5782 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5783 into the target SBCL has been fixed.
5784 * The chill.lisp system for loading cold code into a running SBCL
5786 * Support for the CMU CL "scavenger hook" extension has been removed.
5787 (It was undocumented and unused in the CMU CL sources that SBCL was
5788 derived from, and stale in sbcl-0.6.1.)
5789 * Various errors in the cross-compiler type system were detected
5790 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5791 (enabling various consistency checks). Many of them were fixed,
5792 but some hard problems remain, so the compiler is back to
5793 running without *TYPE-SYSTEM-INITIALIZED* for now.
5794 * As part of the cross-compiler type system cleanup, I implemented
5795 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5796 * I have started adding UNCROSS calls throughout the type system
5797 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5798 on cross-compiler input files will be able to go away, and various
5800 * CONSTANTP now returns true for quoted forms (as explicitly required
5803 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5805 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5806 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5807 (MAKE-LIST -1). In the longer term, it ought to become true
5808 that declarations are assertions even at SAFETY 1. For now, it's not
5809 quite true even at SAFETY 3, but it's at least more nearly true..
5810 (Note that this change seems to increases the size of the system by
5811 O(5%) and to decrease the speed of the compiler by 20% or more.)
5812 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5813 for the problem of printing dozens of lines of distracting information
5814 about low-level system machinery as part of the top stack frame
5815 on entry to the debugger when an undefined function was called.
5816 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5817 is not reset to COMMON-LISP-USER.
5818 * Compilation of stuff related to dyncount.lisp has been made conditional
5819 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5820 smaller. The various dyncount-related symbols have been moved into
5821 a new "SB-DYNCOUNT" package.
5822 * tty-inspect.lisp has been renamed to inspect.lisp.
5823 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5824 feature has gone away. (When we eventually port to other flavors of
5825 libc and/or Unix, we'll try to make the differences between flavors
5826 invisible at the user level.)
5827 * Various other *FEATURES* tags, and/or their associated conditionals,
5828 have been removed if obsolescent, or given better documentation, or
5829 sometimes given more-mnemonic names.
5831 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5833 * tidied up "make.sh" script
5834 * tidied up system directory structure
5835 * better "clean.sh" behavior
5836 * added doc/FOR-CMUCL-DEVELOPERS
5837 * many many small tweaks to output format, e.g. removing possibly-confusing
5838 trailing #\. character in DESCRIBE-INSTANCE
5839 * (EQUALP #\A 'A) no longer signals an error.
5840 * new hashing code, including EQUALP hashing
5841 * tidied up Lisp initialization and toplevel
5842 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5843 * command line argument processing
5844 * added POSIX-GETENV function to deal with Unix-ish environment variables
5845 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5846 terminating SBCL on EOF
5847 * non-verbose GC by default
5848 * There is no more "sbcl" shell script; the sbcl file is now the C
5849 runtime executable (just like CMU CL).
5850 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5852 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5853 symbol and package information as Lisp native symbol and package objects
5854 instead of strings naming symbols and strings naming packages. This way,
5855 whenever packages are renamed (as in warm init), debug information is
5856 transformed along with everything else.
5857 * tweaked the optimization policy declarations which control the building
5858 of SBCL itself. Now, among other things, the system no longer saves
5859 source location debugging information. (This helps two problems at once
5860 by reducing SBCL size and by keeping SBCL from trying to look for its
5861 sources -- which may not exist -- when reporting errors.)
5862 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5863 debugging and testing purposes
5864 * cleaned up printing, making the printer call PRINT-OBJECT for
5865 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5866 methods, giving nearly-ANSI behavior
5867 * converted almost all special variables to use *FOO* naming convention
5868 * deleted PARSE-TIME functionality, since it can be done portably
5869 * moved some files out of cold init into warm init
5870 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5872 * regularized formatting of source files
5873 * added an install.sh script
5874 * fixed ridiculous memory usage of cross-compiler by making
5875 compiler/alloc.lisp not try to do pooling unless it can hook
5876 itself into the GC of the cross-compilation host. Now the system
5877 builds nicely on my old laptop.
5878 * added :SB-ALLOC in target-features.lisp-expr
5879 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5880 was not implemented)
5881 * re-did condition handling and note reporting in the compiler. Notes
5882 are no longer handled by signalling conditions. Style warnings
5883 and warnings are handled more correctly and reported in such a way
5884 that it's easy to find one or the other in your output (so that you
5885 can e.g. figure out which of many problems caused COMPILE-FILE to
5887 * changed the severity of several compiler warnings from full WARNING
5888 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5889 compiler note reporting so that it doesn't use the condition system
5890 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5891 COMPILE-FILE command)
5892 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5893 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5894 no longer supported, since their implementation was deeply intertwingled
5895 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5896 * removed bogus "support" for compiler macros named (SETF FOO), and
5897 removed the compiler macro for SETF INFO (but only after making a fool
5898 of myself on the cmucl-imp mailing list by posting a bogus patch for
5899 DEFINE-COMPILER-MACRO..)
5900 * Compiled files containing forms which have side effects on the Lisp
5901 reader (such as DEFPACKAGE forms) are now handled more correctly.
5902 (Compiler queuing of top level lambdas has been suppressed by setting
5903 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5904 * deleted various currently-unused source files, e.g. gengc.lisp. They
5905 may be added back at some point e.g. when porting to other architectures,
5906 but until they are it's distracting to distribute them and to try to
5908 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5909 there were so many of them they're just distractions, and UNCROSS is
5910 known to be able to handle the current sources
5911 * moved PROFILE functionality into TRACE, so that it will be clear
5912 how the wrapping and unwrapping of functions when you profile them
5913 interacts with the wrapping and unwrapping of functions when you
5914 trace them. (Actually, the functionality isn't there yet, but at least
5915 the interface specification is there. Hopefully, the functionality will
5916 arrive with some future maintenance release.)
5917 * removed host-oops.lisp
5918 * changed signature of QUIT function to allow UNIX-CODE argument
5919 * fixed READ-SEQUENCE bug
5920 * tweaked verbose GC output so that it looks more like the progress
5921 output that ANSI specifies for functions like LOAD
5922 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5923 * added <http://sbcl.sourceforge.com> to the banner information printed by