1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.23 relative to 1.0.22:
3 * enhancement: when disassembling method functions, disassembly
4 for the associated fast function is also produced.
5 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
7 * optimization: printing with *PRINT-PRETTY* true is now more
8 efficient as long as the object being printed doesn't require
9 special handling by the pretty printer.
10 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
11 now interact correctly with type declarations.
12 * partial bug fix: PCL detects infinite recursion during wrapper
13 validation. (thanks to Attila Lendvai)
14 * bug fix: #426; nested function calls are inlined properly.
15 Previously if FOO was an inline function, in calls of the form
16 (FOO (FOO ...)) the outer call was not inlined.
18 changes in sbcl-1.0.22 relative to 1.0.21:
19 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
20 for the shared object in the current directory, but passes the native
21 namestring of the designated pathname to the operation system's shared
22 object loading function as-it.
23 * minor incompatible change: --disable-debugger toplevel option now takes
24 effect before processing of initialization files and --eval or --load
26 * new feature: new commandline argument: --script, which supports
27 shebang lines. See documentation for details. (based on work by
29 * new feature: SAVE-LISP-AND-DIE can save current values of
30 --dynamic-space-size and --control-stack-size in the executable core,
31 causing it to skip normal runtime option processing. See documentation
32 for details. (thanks to Zach Beane)
33 * enhancement: inoccous calls to EVAL or generic functions dispatching
34 on subclasses of eg. STREAM no longer cause compiler notes to appear.
35 * enhancement: the system no longer resignals errors from --load and
36 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
37 associated with the original error to be lost. (thanks to Ariel
39 * enhancement: :DONT-SAVE keyword argument has been added to
40 LOAD-SHARED-OBJECT for controlling interaction with
41 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
42 the effects of an earlier LOAD-SHARED-OBJECT call.
43 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
44 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
45 provided. (reported by Cedric St-Jean)
46 * bug fix: circularity handling in the reader did not treat raw
47 structure slots correctly. (reported by Cedric St-Jean)
48 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
49 file descriptors when there were none.
50 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
51 was broken. (reporteed by Willem Broekema)
52 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
53 pathnames without a directory.
54 * bug fix: COMPILE-FILE did not warn about undefined variable
55 references at toplevel, and LOAD of the resulting fasl did
57 * bug fix: functions with non-required arguments used to end up with
58 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
59 * bug fix: redefining a function with non-required arguments didn't
60 update the system's knowledge about its call signature properly.
61 * bug fix: fixed #431; incompatible alien record type redefinitions
62 are detected and handled. (reported by Neil Haven)
63 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
64 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
66 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
67 after alien stack frames.
68 * bug fix: strings passed to mk{s,d}temp lacked null termination
70 changes in sbcl-1.0.21 relative to 1.0.20:
71 * new feature: the compiler is able to track the effective type of a
72 generic function across method addition and removal.
73 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
74 appropriately typed structure slots without locking.
75 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
76 information like those gathered by TIME using a programming-friendly
78 * new feature: TIME reports time taken even if the form performs a
79 non-local transfer of control.
80 * enhancement: reduced conservativism on GENCGC platforms: on
81 average 45% less pages pinned (measured from SBCL self build).
82 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
83 mutate constant symbols or violate declaimed type of the symbol.
84 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
85 sleeping on the semaphore in heavily contested semaphores.
86 * bug fix: semaphores and condition variables were not interrupt
88 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
89 owned by other threads anymore.
90 * bug fix: FIND on lists called KEY outside the specified
91 subsequence. (reported by budden)
92 * bug fix: LOG doesn't use single-float intermediate results when
93 given mixed integer and double-float arguments, leading to better
94 precision. (reported by Bob Felts)
95 * bug fix: LOG with base zero returned values of inconsistent type.
97 changes in sbcl-1.0.20 relative to 1.0.19:
98 * minor incompatible change: OPTIMIZE qualities
99 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
100 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
101 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
102 * documentation: some slot access efficiency guidelines have been
103 added to the user manual.
104 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
105 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
106 as ASSOC and MEMEBER.
107 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
108 to more efficient EQ-comparison versions more often.
109 * optimization: enhanced derivation of DOLIST iteration variable type
111 * optimization: constant folding of simple (LIST ...) forms as DOLIST
113 * optimization: runtime lookup of function definitions can be
114 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
115 * optimization: compiler is able to derive the return type of
116 (AREF (THE STRING X) Y) as being CHARACTER.
117 * optimization: CLRHASH on empty hash-tables no longer does pointless
118 work. (thanks to Alec Berryman)
119 * optimization: REPLACE deftransforms don't punt when :START1 or
121 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
122 no longer emits a code deletion note. (reported by Andrew
124 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
125 functions with an odd number of &OPTIONAL arguments, a &REST
126 argument, and one or more &KEY arguments at the call site.
127 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
128 arguments appeared at call sites as well.
129 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
130 READ-LINE &co can no longer read from them afterwards. (reported
132 * bug fix: fixed #427: unused local aliens no longer cause compiler
133 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
135 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
136 alien-stack leakage. (reported by Andy Hefner)
137 * bug fix: PROGV signals an error when an attempt to violate declared
138 type of a variable or bind a constant is made.
139 * bug fix: SET signals an error when an attempt to violate declared
140 type of a variable is made.
141 * bug fix: restart computation during the execution of a restart
142 test function no longer causes infinite recursion. (reported by
144 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
145 signals an error. (thanks to Pierre Mai)
146 * bug fix: EXPORT left symbol unexported in conflict situations.
147 (thanks to Michael Weber)
148 * bug fix: correctly handle name conflicts involving CL:NIL.
149 (thanks to Michael Weber)
150 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
151 conflicts arising from USEing package with conflicting symbols
152 correctly. (thanks to Michael Weber)
154 changes in sbcl-1.0.19 relative to 1.0.18:
155 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
156 warnings that go otherwise unhandled will be muffled if they are
157 of the type that's the value of this variable.
158 * optimization: stack allocation is slightly more efficient on x86
160 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
161 where a raw slot always is initialized using the initform whose
162 type is not know sufficiently well a compile-time are now compiled
163 correctly. (reported by John Morrison)
164 * bug fix: compiler no longer makes erronous assumptions in the
165 presense of non-foldable SATISFIES types.
166 * bug fix: stack analysis missed cleanups of dynamic-extent
167 arguments in non-let-converted calls to local functions.
168 * improvements to the Windows port:
169 ** adjusted address spaces for building on both Win32 and
170 Win64. (thanks for John Connors)
171 * fixed some bugs revealed by Paul Dietz' test suite:
172 ** interval arithmetic during type derivation used inexact integer
173 to single-float coercions.
174 ** arithmetic operations involving large integers and single
175 floats give the same results in compiled and interpreted code.
176 ** deriving the result type of COERCE no longer signals an error
177 if the derived type of the second argument is a MEMBER type
178 containing invalid type specifiers.
179 ** ADJOIN with constant NIL as second argument works correctly.
180 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
182 changes in sbcl-1.0.18 relative to 1.0.17:
183 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
184 profiles only the current thread.
185 * minor incompatible change: changes to SYMBOL-VALUE of constants
186 defined with DEFCONSTANT now signal an error.
187 * enhancement: SB-SPROF now has support for wallclock profiling,
188 and is also able to profile specific threads. REPORT output
189 has also additional sorting options.
190 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
192 * optimization: structure allocation has been improved
193 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
194 ** out of line constructors are ~10% faster.
195 ** inline constructors are ~15% faster.
196 ** inline constructors are capable of dynamic extent allocation
197 (generally on x86 and x86-64, in some cases on other platforms
199 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
201 * optimization: file compiler is now able to coalesce non-circular
202 lists, non-base strings, and bit-vectors. Additionally, constants
203 are never referenced through SYMBOL-VALUE at runtime.
204 * optimization: code defining methods on PRINT-OBJECT (and other
205 generic functions in the COMMON-LISP package) now loads faster.
206 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
208 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
209 fasl is now deleted. (reported by Attila Lendvai)
210 * bug fix: READ-LINE always returned NIL for the last line in files.
211 (reported by Yoshinori Tahara)
212 * bug fix: more accurate disassembly annotations of foreign function
213 calls. (thanks to Andy Hefner)
214 * bug fix: trimming non-simple strings and non-string string
215 designators when the there is nothing to trim works properly.
216 (thanks to James Knight)
217 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
218 (thanks to Travis Cross)
219 * fixed some bugs revealed by Paul Dietz' test suite:
220 ** NIL is a valid function name (regression at 1.0.13.38)
221 ** FILL on lists was missing its return value (regression at 1.0.12.27)
222 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
223 fill pointers properly (regression at 1.0.12.23)
224 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
225 displacement indices properly (regression at 1.0.12.23)
227 changes in sbcl-1.0.17 relative to 1.0.16:
228 * temporary regression: user code can no longer allocate closure
229 variable storage on stack, due to bug 419 without explicitly
230 requesting it. Please consult sbcl-devel for advice if you need to
231 use this feature in the meanwhile.
232 * new feature: runtime argument --control-stack-size can be used to
233 adjust thread default control stack size.
234 * enhancement: improved TIME output
235 ** all times are reported using the measured accuracy (milliseconds
236 for real and GC times, microseconds for everything else.)
237 ** processor cycle counts on x86 and x86-64.
238 ** interpreted forms are counted for both evaluator modes.
239 ** number of lambdas converted by the compiler is reported.
240 ** CPU percentage report (computed from real and total run time.)
241 ** more comprehensive run time reporting, using a condenced format
242 ** interperted form, lambda, and page fault counts are omitted
244 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
246 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
247 * optimization: two argument forms of LAST are upto ~10% faster
248 in normal SPEED policies.
249 * optimization: NCONC no longer needs to heap cons its &REST list
250 in normal SPEED policies.
251 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
253 * bug fix: UNION and NUNION work with :TEST-NOT once more,
254 regression since 1.0.9.1. (thanks to Eric Marsden)
255 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
256 since 1.0.15.36. (thanks to Paul Khuong)
257 * bug fix: LAST when always returned the whole list when given a bignum
258 as the second argument.
259 * bug fix: dynamic extent allocation of nested lists and vectors
260 could leak to otherwise accessible parts.
261 * bug fix: invalid optimization of heap-allocated alien variable
263 * bug fix: fasl header checking is less vulnerable to different
264 platform word lengths.
265 * bug fix: more correct assembler syntax for GNU binutils
266 2.18.50.0.4 support. (thanks to Marijn Schouten)
267 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
269 * bug fix: the fopcompiler can handle LOCALLY forms (with no
270 declarations) successfully. (reported by Attila Lendvai)
272 changes in sbcl-1.0.16 relative to 1.0.15:
273 * minor incompatible change: revert the changes to sb-posix's error
274 signaling added in 1.0.14.
275 * minor incompatible change: change PROBE-FILE back to returning
276 NIL whenever we can't get a truename, as was the case before 1.0.14.
277 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
278 inherits from ERROR instead of just CONDITION.
279 * new feature: SB-INTROSPECT can provide source locations for instances
280 as well. (thanks to Tobian Ritterweiler)
281 * optimization: binding special variables now generates smaller code
282 on threaded platforms.
283 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
284 and cases where no :TEST is given but the compiler can infer that
285 the element to search is of type (OR FIXNUM (NOT NUMBER)).
286 * optimization: better LOGNOT on fixnums.
287 * optimization: modular arithmetic for a particular requested width
288 is implemented using a tagged representation unless a better
289 representation is available.
290 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
291 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
292 for wellformedness and returns a specialized vector. (reported by
293 Francois-Rene Rideau)
294 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
295 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
296 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
297 unscheduling timer at the same time as another timer fires.
298 * bug fix: don't reschedule timers for dead threads.
299 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
300 * bug fix: copying output from RUN-PROGRAM to a stream signalled
301 bogus errors if select() was interrupted.
302 * enhancement: add support for fcntl's struct flock to SB-POSIX.
304 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
305 * enhancement: cleaner backtraces for interactive interrupts, as
306 well as other cases where the interesting frames used to be
307 obscured by interrupt handling frames.
308 * enhancement: untracing a whole package using (UNTRACE "FOO") is
309 now supported, and tracing a whole package using (TRACE "FOO") now
310 traces SETF-functions as well.
311 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
312 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
313 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
314 * unreadably printed representation of hash-tables now includes
316 * bug fix: partially fixed #188: type propagation from assignments
317 is now more efficient.
318 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
319 'DOUBLE-FLOAT) are not flushable.
320 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
321 full address of the object, and none of the tag bits.
322 * bug fix: readably printing hash-tables now respects other printer
323 control variables. (reported by Cedric St-Jean)
324 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
325 keyword with MAKE-HASH-TABLE.
326 * bug fix: export SB-POSIX:MKSTEMP.
327 * bug fix: SORT was not interrupt safe.
328 * bug fix: XREF accounts for the last node of each basic-block as
330 * bug fix: MAKE-INSTANCE optimizations interacted badly with
331 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
332 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
333 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
334 create obsolete instances in the case of redefinition or
335 obsoletion of a superclass. (thanks to Andy Hefner)
336 * bug fix: Support for the Alpha architecture has been revived; it had
337 suffered somewhat from lack of maintenance since sbcl-1.0.
338 * improvements to the Windows port:
339 ** The system detects the codepage to use at startup, instead of
340 using the value from the saved core. (thanks to Kei Suzuki)
342 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
343 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
344 (see documentation for details.)
345 * revived support for OpenBSD (contributed by Josh Elsasser)
346 * partially fixed bug #108: ROOM no longer suffers from occasional
347 (AVER (SAP= CURRENT END)) failures.
348 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
349 bodies no longer cause a WARNING to be signalled. (reported by
351 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
352 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
353 the bug in TRUNCATE.) (reported by Michael Weber)
354 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
355 no samples. (reported by Andy Hefner)
356 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
357 no longer appear as (NIL ...) frames in backtraces.
358 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
359 is now actually exported from SB-EXT as documented. (reported by
361 * bug fix: sb-aclrepl now correctly understands how to inspect
362 single-floats on 64-bit platforms where single-floats are not boxed.
363 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
364 yet been finalized. (reported by Levente Meszaros)
365 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
366 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
367 SBCL-specific optimize qualities.
369 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
370 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
371 an executable in the search path, and does so in the child
372 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
373 been removed; it can be found in the CVS history, for somebody who
374 needs that search behavior (see the manual).
375 * minor incompatible change: compiler policy re. weakening type
376 checks has changed: now type checks are weakened only if SAFETY < 2
378 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
379 unparsing of directory pathnames as files. Analogously,
380 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
381 filename to parse into a directory pathname.
382 * enhancement: implicit generic function creation now signals a
383 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
384 users can bind handlers for and muffle around calls to LOAD.
385 * enhancement: RUN-PROGRAM allows unicode arguments and environments
386 to be used (using the default stream external format), and allows
387 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
388 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
389 strings and vectors whose element-type or simplicity is not fully
390 known at compile-time.
391 * optimization: STRING-TRIM and related functions no longer allocate
392 a new string when no trimming needs to be performed. These functions
393 are also faster than before when the input string has been declared
395 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
396 * optimization: READ-LINE is significantly faster for files containing
398 * optimization: non-open coded uses of character comparison operators
399 (e.g. char=) no longer cons when called with more than one parameter
400 on platforms supporting dynamic-extent allocation.
401 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
402 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
403 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
405 * bug fix: some sequence functions elided bounds checking when
407 * bug fix: too liberal weakening of union-type checks when SPEED >
409 * bug fix: more bogus fixnum declarations in ROOM implementation
412 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
413 * new feature: MAKE-HASH-TABLE now experimentally accepts a
414 :SYNCHRONIZED argument, which makes the hash-table safe for
415 concurrent accesses (but not iteration.) See also:
416 SB-EXT:WITH-LOCKED-HASH-TABLE, and
417 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
418 * optimization: CONCATENATE on strings is an order of magnitude faster
419 in code compiled with (> SPEED SPACE).
420 * optimization: SUBSEQ is ~50% faster on lists.
421 * bug fix: bug 417 fixed -- source location reporting is now more robust.
422 * bug fix: SUBSEQ on a list will now correctly signal an error if if
423 END is smaller then START.
424 * bug fix: SB-PROFILE will no longer report extra consing for nested
425 calls to profiled functions.
426 * bug fix: ROOM implementation had bogus fixnum declarations which
427 could cause type-errors when calling ROOM on large images.
428 * bug fix: if file compilation is aborted, the partial fasl is now
429 deleted, and COMPILE-FILE returns NIL as the primary value.
430 * bug fix: number of thread safety issues relating to SBCL's internal
431 hash-table usage have been fixed.
432 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
433 be returned from its body when the values were being returned
434 using unknown-values return convection and the W-P-O was wrapped
435 inside an UNWIND-PROTECT.
436 * bug fix: sb-posix should now compile again under Windows, enabling
439 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
440 * incompatible change: hash-table accessor functions are no longer
441 automatically protected by locks. Concurrent accesses on the same hash-table
442 from multiple threads can give inconsistent results or even corrupt the
443 hash-table completely. Multi-threaded applications should do their own
444 locking at the correct granularity. In the current implementation it is
445 still safe to have multiple readers access the same table, but it's not
446 guaranteed that this property will be maintained in future releases.
447 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
448 and will signal an error at runtime.
449 * enhancement: SB-THREAD package now exports a semaphore interface.
450 * enhancement: CONS can now stack-allocate on x86 and
451 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
453 * enhancement: nested lists can now be stack allocated on
454 platforms providing stack allocation support.
455 * enhancement: dynamic-extent support has been extended to support
456 cases where there are multiple possible sources for the stack
458 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
459 if the mutex is uncontested on Linux.
460 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
461 as specified by the CLHS. (thanks to Tobias Rittweiler)
462 * bug fix: NaN comparison now works on x86-64.
463 * bug fix: CLOSE :ABORT T on a stream with pending output now
465 * bug fix: instances of non-standard metaclasses using standard
466 instance structure protocol sometimes missed the slot type checks
468 * bug fix: known functions can be inlined in high-debug code.
470 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
471 * minor incompatible change: the MSI installer on Windows no longer
472 associates .lisp and .fasl files with the installed SBCL.
473 * minor incompatible change: :UNIX is no longer present in *FEATURES*
474 on Windows. (thanks to Luis Oliviera)
475 * new feature: SB-CLTL2 contrib module now implements
476 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
477 * optimization: scavenging weak pointers is now more efficient,
478 requiring O(1) instead of O(N) per weak pointer to identify
479 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
480 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
481 method bodies using constant slot-names when the first argument is
482 a specializer parameter for the method.
483 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
484 names, when the class of the instance is a direct instance
485 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
486 as slow as the constant slot-name case.)
487 * optimization: member type construction is now O(N) instead
489 * optimization: UNION and NUNION are now O(N+M) for large
490 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
492 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
493 now more readable in environments like Slime which display it.
494 (thanks to Tobias C. Rittweiler)
495 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
496 was able to infer the correct argument type for the object on which
497 the CAS operation was being performed.
498 * bug fix: copy propagation interfered with parallel assignment
499 semantics in local calls. (reported by Paul Khuong)
500 * bug fix: the signed modular fixnum shift compiled to wrong code on
501 x86 and x86-64. (spotted by a slight modification to some of
504 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
505 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
506 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
507 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
509 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
510 and generic function now print the object identity for anonymous
511 instances. (thanks to Attila Lendvai)
512 * enhancement: as an extension to MOP, SBCL now supports SETF of
513 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
514 (thanks to Attila Lendvai)
515 * enhancement: sb-cover has an alternate annotation mode which puts
516 the form annotations at the car of the form, instead of annotating
517 it completely. The benefit of this mode is that it shows better
518 which forms were instrumented by the compiler.
519 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
520 by printer control variables. (reported by Dan Corkill)
521 * bug fix: system leaked memory when delayed output was performed by
522 the OS in smaller chunks then expected. (thanks to David Smith)
523 * bug fix: system leaked memory when file streams were not closed
525 * bug fix: large objects written to slow streams that were modified
526 after the write could end up with the modified state written to
527 the underlying file descriptor.
528 * bug fix: multiple threads operating in parallel on the same stream
529 could cause buffer-overflows.
530 * bug fix: source location information is stored correctly
531 (broken since 1.0.6). This bug would generally show up as the
532 Slime debugger highlighting the wrong form when the sldb-show-source
534 * bug fix: Branch forms are again annotated as branches in the sb-cover
536 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
537 on x86-64. (reported by Gregory Vanuxem)
538 * bug fix: EQUALP could return wrong results for structures with raw
539 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
540 word). (reported by Vjacheslav Fyodorov)
541 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
544 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
545 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
546 atomic compare-and-swap operations on threaded platforms.
547 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
548 allows assigning a global minimum value to optimization qualities
549 (overriding proclamations and declarations).
550 * enhancement: closed over variables can be stack-allocated on x86
552 * performance bug fix: GETHASH and (SETF GETHASH) are once again
554 * optimization: slot definition lookup is now O(1). This speeds up
555 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
556 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
557 * optimization: ASSOC and MEMBER can now be open-coded for all
558 combinations of keyword arguments when second argument is constant
559 and SPEED >= SPACE. In other cases a specialized version is
561 * bug fix: using obsoleted structure instances with TYPEP and
562 generic functions now signals a sensible error.
563 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
564 (reported by Kristoffer Kvello)
565 * bug fix: backtrace construction is now more careful when making
566 lisp-objects from pointers on the stack, to avoid creating bogus
567 objects that can be seen by the GC.
568 * bug fix: defaulting of values in contexts expecting more than 7
569 variables now works on x86-64. (reported by Christopher Laux)
570 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
572 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
573 as the property-list of a symbol.
574 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
575 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
576 situations requested, are once again file-compileable. (reported
579 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
580 * MOP improvement: support for user-defined subclasses of
581 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
582 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
583 the expansion of DEFMETHOD, is responsible for generating a form
584 which creates a list of specializers when evaluated. Additional
585 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
586 debugging and introspective support.
587 * minor incompatible change: the (unsupported) spinlock interface
588 has changed: free spinlock now has the value NIL, and a held spinlock
589 has the owning thread as its value.
590 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
591 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
593 * enhancement: name of a socket-stream is now "a socket" instead of
595 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
596 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
597 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
598 for generic functions. (Thanks to Tobias C. Rittweiler)
599 * optimization: bignum printing speed has been improved by 20-40%
600 (depending on the bignum size.)
601 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
603 * bug fix: the cache used by the CLOS to store precomputed effective
604 methods, slot offsets, and constant return values is now thread and
606 * bug fix: generic function dispatch function updating is now thread
607 and interrupt safe (in the sense that the known issues have been
609 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
610 * bug fix: interning EQL-specializers is now thread and interrupt safe.
611 * bug fix: asdf systems with dependencies to the SB-POSIX or
612 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
613 * bug fix: interrupt safety of applicable method computation has been
616 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
617 * new contrib: sb-cover, an experimental code coverage tool, is included
619 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
620 significantly faster.
621 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
622 produce more efficient code on x86-64 if the compiler can determine
623 that (+ INDEX <constant>) does not require a bounds check and FOO
624 has an element type at least 8 bits wide.
625 * enhancement: a new, experimental synchronous timeout facility is
626 provided. Refer to SB-SYS:WITH-DEADLINE for details.
627 * enhancement: when a symbol name conflict error arises, the
628 conflicting symbols are always printed with a package prefix.
629 (thanks to Kevin Reid)
630 * enhancement: stepping is now once again supported on the SPARC and
631 MIPS platforms. (It is also now more likely to work on CheneyGC
633 * enhancement: sb-sprof can now also track and report accurate call
635 * bug fixes: the treatment of non-standard subclasses of
636 SB-MOP:SPECIALIZER is more correct.
637 * incompatible change: PURIFY no longer copies the data from the
638 dynamic space into the static and read-only spaces on platforms
639 that use the generational garbage collector
640 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
642 * bug fix: GC race condition occasionally resulting in crashes with
643 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
645 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
647 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
648 a STYLE-WARNING to be signalled (regression from 1.0.4.)
649 * bug fix: an asynchronous interrupt could previously leave the
650 system running with GC inhibited.
651 * bug fix: a DECLARE form evaluated at top-level now causes an error
652 rather than silently (or verbosely) returning NIL.
653 * bug fix: trying to dissassemble functions compiled at high DEBUG could
654 result in a error being signalled due to source form lookup errors.
655 (reported by Peter Graves)
657 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
658 * incompatible change: removed writer methods for host-ent-name,
659 host-ent-addresses -- changing the values did not update the DNS
661 * minor incompatible change: changed experimental JOIN-THREAD interface
662 * documentation: the manual now lists reader and writer methods
663 in class slot documentation sections. (thanks to Richard M Kreuter)
664 * documentation: unwinding from asyncronous events has been
665 documented as unsafe.
666 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
667 in multithreaded application code.
668 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
669 platforms. (thanks to James Anderson for the optimization hint)
670 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
672 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
673 variants no longer cons.
674 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
675 their NOT- variants no longer cons.
676 * optimization: EQUAL hash tables no longer use SXHASH for objects
677 of all data types, but instead use an EQL hash for types for which
678 EQUAL is the same as EQL.
679 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
680 are significantly faster.
681 * optimization: new STRING-OUTPUT-STREAM implementation is much
682 faster for large outputs and conses 30% less on average.
683 * enhancement: XREF information is now collected for references made
684 to global variables using SYMBOL-VALUE and a constant argument.
685 * enhancement: SIGINT now causes a specific condition
686 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
687 * bug fix: FILE-POSITION used to signal an error in some cases where
688 ANSI requires it to return NIL.
689 * bug fix: ADJUST-ARRAY is now interrupt-safe.
690 * bug fix: adding and removing fd-handlers is now interrupt-safe.
691 * bug fix: inlined calls to C now ensure 16byte stack alignment on
693 * bug fix: bad type declaration in the CLOS implementation has
694 been fixed. (reported by James Anderson)
695 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
696 (thanks to Lutz Euler)
697 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
698 required by the CLHS. (reported by Samium Gromoff)
699 * bug fix: dead unbound variable references now signal an error.
700 (reported by Marco Monteiro)
701 * bug fix: / with an unused value was being deleted in safe code.
702 (thanks to Marco Monteiro and Kevin Reid)
703 * bug fix: number of characters that can be written onto a single
704 line in a file is unlimited.
705 * bug fix: some GC deadlocks caused by asynchronous interrupts have
706 been fixed by inhibiting interrupts for when GC is disabled.
707 * bug fix: some interrupt safety issues with GETHASH, (SETF
708 GETHASH), CLRHASH and REMHASH have been fixed.
709 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
710 specifier no longer causes infinite recursion.
711 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
712 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
713 * bug fix: an &environment argument with the correct variable information
714 is passed to macros that are expanded during byte compilation.
715 (reported by Samium Gromoff)
716 * bug fix: a logic error was causing the hash function for bignums to
717 have excessive amounts of collisions. (reported by Faré Rideau)
718 * bug fix: modifying the contents of an array could change the return
719 value of SXHASH on that array, which is only allowed for strings
720 and bit vectors. (bug introduced in 0.9.16)
721 * improvement: the x86-64/darwin port now passes all tests (except
722 for the debugger tests) but should still be considered
723 experimental until this is fixed.
724 * improvement: a style-warning is signaled for CASE (etc) clauses with
725 duplicate keys. (thanks to Kevin Reid)
726 * improvement: macos/x86 and macos/x86-64 now use mach exception
727 handlers for dealing with illegal instructions (for trapping and
728 error handling) and memory protection violations (for GC).
730 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
731 * new platform: experimental support for x86-64/darwin (MacOS).
732 * incompatible change: the thread-safe (on most platforms) getaddrinfo
733 and getnameinfo sockets functions are used instead of gethostbyaddr
734 and gethostbyname, on platforms where the newer functions are available.
735 As a result, the ALIASES field of HOST-ENT will always be NIL on these
737 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
738 don't print the startup banner, but behave as if --noinform was passed
739 as a command line argument. (thanks to Kevin Reid)
740 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
741 * optimization: code using alien values with undeclared types is much faster.
742 * optimization: the compiler is now able to open code SEARCH in more cases.
743 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
744 * bug fix: using standardized COMMON-LISP special variables as loop
745 variables no longer signals bogus package lock violations. (reported
747 * bug fix: declaring local loop variables to be of a range-limited type
748 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
749 (reported by Andras Simon)
750 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
751 bugs remain on x86-64.)
752 * bug fix: the #= and ## reader macros now interact reasonably with
753 funcallable instances.
754 * bug fix: type-checks for function arguments were compiled using the
755 compiler policy settings of the wrong lexical environment (in 1.0.2
757 * bug fix: SHADOW accepts characters as string designators, as required
758 by the spec (thanks to Eric Marsden)
759 * bug fix: fixed GC safety issues when foreign functions are called with
760 non-base strings as arguments
761 * bug fix: more consistent error output for fatal-compiler-warnings, like
763 * bug fix: functions with proper names were showing up as NIL in
764 backtraces (reported by Edi Weitz, regression in 1.0.2)
766 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
767 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
768 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
769 produce more efficient code on the x86 if the compiler can determine
770 that (+ INDEX <constant>) does not require a bounds check and FOO
771 has an element type at least 8 bits wide.
772 * bug fix: references to undefined variables are handled the same way
773 in toplevel forms as in the normal compiler
774 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
776 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
777 (thanks to Jon Buller)
778 * improvement: faster compilation times for complex functions
779 * improvement: added readlink support to SB-POSIX (thanks to Richard
782 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
783 * improvement: experimental support for mach exception handling on
784 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
786 * improvement: support for GBK external format.
787 (thanks to Chun Tian (binghe))
788 * improvement: the debugger now displays variables that have been closed
789 over, in code compiled with (DEBUG 2) or higher
790 * improvement: support for executable cores on NetBSD (thanks to
792 * new feature: added a RESTART-FRAME debugger command
793 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
794 be used to provide an implementation for FILE-POSITION on Gray streams
795 (thanks to Eric Marsden)
796 * new feature: add syslog, openlog and closelog support to SB-POSIX
797 (thanks to Richard Kreuter)
798 * optimization: the function call overhead in code compiled with
799 a high DEBUG optimization setting is significantly
800 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
801 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
802 (thanks to Tony Martinez)
803 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
804 evaluated once (reported by Kevin Reid)
805 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
806 works again (thanks to Kilian Sprotte)
807 * bug fix: an error is signaled for tagbodies with duplicate tags
808 (thanks to Stephen Wilson)
809 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
810 * bug fix: Win32 port can now handle foreign code unwinding Lisp
811 stack frames from alien callbacks.
812 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
813 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
814 65k pages (thanks to David Woodhouse)
815 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
817 changes in sbcl-1.0.1 relative to sbcl-1.0:
818 * new platform: FreeBSD/x86-64, including support for threading.
819 * new feature: the compiler stores cross-referencing information
820 about function calls (who-calls), macroexpansion (who-macroexpands)
821 and special variables (who-binds, who-sets, who-references) for code
822 compiled with (< SPACE 3). This information is available through the
823 sb-introspect contrib.
824 * new feature: users may subclass SEQUENCE, and have instances of
825 these classes interoperate with standard Common Lisp functions if
826 a number of methods are defined. (This feature is experimental
827 and the interface subject to change based on feedback from SBCL
828 users and the general community)
829 * improvement: sb-sprof traces call stacks to an arbitrary depth on
830 x86/x86-64, rather than the previous fixed depth of 8
831 * improvement: another pthread back-end of mutex "pthread-futex".
832 * bug fix: non-ascii command-line arguments are processed correctly
833 (thanks to Yaroslav Kavenchuk)
834 * bug fix: non-required arguments were not passed correctly when a method
835 defined using DEFMETHOD was called from a mop-generated method using
836 CALL-NEXT-METHOD (reported by Pascal Costanza)
837 * bug fix: recursion is now permitted in accessors through
838 SLOT-UNBOUND. (reported by Pascal Costanza)
839 * bug fix: an error was signaled at startup if the HOME environment
840 variable was defined, but had an empty value (reported by Peter Van Eynde)
841 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
842 signal a PROGRAM-ERROR, not a BUG.
843 * bug fix: SB-POSIX:READDIR works when built with large file support.
844 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
846 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
847 for better automatic indentation support. (thanks to Matt Pillsbury)
848 * optimization: loading generic functions no longer takes O(n^2) time,
849 proportional to the amount of methods in the generic function
850 (reported by Todd Sabin and Jeremy Brown)
851 * optimization: the FIND and POSITION family of sequence functions
852 are significantly faster on arrays whose element types have been
854 * improvements to the Windows port:
855 ** Intermittent heap corruption problems have been fixed. (thanks
856 to Alastair Bridgewater)
857 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
859 ** Lisp is able to unwind foreign exception frames from alien
860 callbacks. (thanks to Alastair Bridgewater)
862 changes in sbcl-1.0 relative to sbcl-0.9.18:
863 * improvement: experimental support for threading on FreeBSD/x86.
864 (thanks to NIIMI Satoshi)
865 * improvement: runtime option --dynamic-space-size can be used
866 to set the size of the dynamic space reserved on startup.
867 * improvement: floating point modes in effect are now saved in
868 core, and restored on startup.
869 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
870 startup, not time since first call to GET-INTERNAL-REAL-TIME.
871 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
872 threads are not running after *SAVE-HOOKS* have run.
873 * improvement: writes to CLOS instance slots are type-checked in code
874 compiled with (SAFETY 3)
875 * improvement: floating-point exception handling on FreeBSD (thanks to
877 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
878 (thanks to Zach Beane)
879 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
881 * improvement: added support for the Shift-JIS external format.
882 (contributed by NIIMI Satoshi)
883 * improvement: callbacks are supported on Linux/PPC. (thanks to
885 * bug fix: compiler bug triggered by a (non-standard) VALUES
886 declaration in a LET* was fixed. (reported by Kaersten Poeck)
887 * bug fix: file compiler no longer confuses validated and already
888 dumped structurres. (reported by Kaersten Poeck)
889 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
890 fill-pointer signals a type-error as required. (thanks to
892 * bug fix: disassemly of funcallable instances works.
893 * bug fix: single stepping on PPC.
894 * bug fix: fix thread-safety problems in the type system (generally
895 manifesting as nonsensical errors like "STRING is a bad type specifier
896 for sequences" or "The value 1 is not of type FIXNUM")
897 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
898 (reported by Josip Gracin)
899 * bug fix: an error is signaled for attempts to displace arrays with
900 incompatible element types (thanks to Mario Mommer)
901 * bug fix: more correct handling of wide characters in debug info
902 (bug reported by Attila Lendvai and fixed by Juho Snellman)
903 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
904 and don't cause extra consing
905 * optimization: MAP and MAP-INTO are significantly faster on vectors
906 whose elements types have been declared.
907 * Improvements to SB-SPROF:
908 ** Support for allocation profiling
909 ** Reduced profiling overhead, especially for long profiling runs
910 * Improvements to the Windows port:
911 ** floating point exceptions are now reported correctly.
912 ** stack exhaustion detection works partially.
913 ** more accurate GET-INTERNAL-REAL-TIME.
914 ** better RUN-PROGRAM behaviour in case of errors in the child
916 ** PROBE-FILE now simplifies pathnames correctly.
917 ** DIRECTORY now works correctly with :WILD-INFERIORS.
918 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
919 1st 1970 (although time timezone data will be unreliable).
920 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
922 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
923 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
924 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
926 * bug fix: two potential GC deadlocks affecting threaded builds.
927 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
928 returns T (reported by Anton Kazennikov)
929 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
930 with non-variable places
931 * bug fix: remove a race condition in the setting of
932 funcallable-instance functions, this should make threaded CLOS
933 code more stable against memory faults.
934 * bug fix: corruption of specials when unbinding is interrupted by an
935 asynchronous unwind (reported by Hannu Koivisto)
936 * improvement: the debugger will now also display local variables that
937 are only used once, for code compiled with a DEBUG optimization quality
940 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
941 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
942 * incompatible change: External-format support for FFI calls. The
943 SB-ALIEN:C-STRING no longer implies an ASCII
944 external-format. Instead the string is subject to external-format
945 conversion. Additionally return values of type SB-ALIEN:C-STRING
946 are by default of type (SIMPLE-ARRAY CHARACTER), not
947 SIMPLE-BASE-STRING. For an alien type that behaves like the old
948 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
949 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
950 * incompatible change: SB-EXT package no longer contains the
951 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
952 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
954 * incompatible change: the single-stepper is no longer available
955 on Alpha, Mips and Sparc platforms.
956 * minor incompatible change: the direct superclasses of
957 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
958 not (STANDARD-OBJECT FUNCTION). This makes the
959 class-precedence-lists of GENERIC-FUNCTION and
960 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
962 * minor incompatible change: the default stream external format on
963 non-unicode SBCL is no longer detected from the locale, but is always
965 * new feature: Add a version of evaluator that uses an interpreter instead
966 of the compiler. EVAL still uses the compiler by default, to switch it
967 to use the interpreter, set the value of the variable
968 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
969 * minor incompatible change: the single-stepper REPL has been merged
970 with the normal debugger (see the "Stepping" heading of the debugger help
971 for more details). The debugger command STEP will no longer switch
972 to the single-stepper REPL.
973 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
974 for a type now works.
975 * bug fix: loading of default sysinit file works. (thanks to Leonid
977 * bug fix: better detection of circularities in the file-compiler.
978 (reported by Marco Monteiro)
979 * bug fix: the CL pathname functions now work with files that have
980 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
981 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
982 systems with Unix98 pty semantics.
983 * bug fix: ASDF-INSTALL will now work with bsd tar.
984 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
986 * bug fix: timers expiring in dead threads no longer cause a
987 type-error (reported by Paul "Nonny Mouse").
988 * bug fix: thanks to more lightweight single-stepper instrumentation,
989 code compiled with (DEBUG 3) will compile and execute significantly faster,
990 and will have more accurate type-inferencing than before
991 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
992 whose bindings are modified
993 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
994 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
995 ** replace dummy implementations of CL:MACHINE-INSTANCE and
996 CL:SOFTWARE-VERSION with proper version
998 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
999 * feature: implemented the READER-METHOD-CLASS and
1000 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1001 as specified by AMOP.
1002 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1004 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1005 (thanks to Lutz Euler)
1006 * optimization: hashing of general arrays and vectors has been
1007 improved. (reported by Any Fingerhut)
1008 * enhancement: SB-INTROSPECT is now able to find definitions of
1009 profiled functions. (thanks to Troels Henriksen)
1010 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1011 as well, allowing compiler-macros for SETF-functions to expand.
1012 * enhancement: step-instrumentation no longer wraps known
1013 single-value functions with multiple-value context, allowing
1014 better type inference.
1015 * fixed bug #337: use of MAKE-METHOD in method combination now works
1016 even in the presence of user-defined method classes. (reported by
1017 Bruno Haible and Pascal Costanza)
1018 * fixed bug #339(c): if there are applicable methods not part of any
1019 long-form method-combination group, call INVALID-METHOD-ERROR.
1020 (reported by Bruno Haible)
1021 * fixed bug #361: the :FUNCTION initarg in the protocol for
1022 initialization of methods can now be used to override
1023 internally-produced optimized functions. (reported by Bruno
1025 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1026 system-provided lambda expression no longer cause warnings about
1027 unbound #:|pv-table| symbols.
1028 * bug fix: improved the handling of type declarations and the
1029 detection of violations for keyword arguments with non-constant
1031 * bug fix: potentially erronous calls to PATHNAME and
1032 MERGE-PATHNAMES were being flushed in some cases.
1033 (reported by Richard Kreuter)
1034 * bug fix: compiled calls to TYPEP were mishandling obsolete
1035 instances. (reported by James Bielman and Attila Lendvai)
1036 * bug fix: format strings with ~> without matching ~< no longer
1037 trigger an AVER, but signal an understandable error instead.
1038 (reported by Antonio Martinez)
1039 * bug fix: specifying an output-file without a pathname-type for
1040 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1041 of input-file instead of "fasl". (reported by Robert Dodier)
1042 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1043 (reported by James Y Knight).
1044 * bug fix: compiler-macros-function did not consider the environment
1045 argument for shadowing by local functions.
1046 * bug fix: compiler-macros expansion was inhibited by local INLINE
1048 * bug fix: inline expansions of known functions were subject to
1049 step-instrumentation in high debug policies, leading to problems
1050 with type-inference.
1051 * bug fix: compiler failed to differentiate between different CONS
1052 types in some cases.
1053 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1054 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1055 * bug fix: #368: incorrect use of expressed vs. upgraded array
1057 * bug fix: #306a: more precise unions of array types.
1058 * thread-safety improvements:
1059 ** CONDITION-WAIT could return early on Linux, if the thread was
1060 interrupted and subsequently continued with SIGCONT.
1061 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1063 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1064 * added support for the ucs-2 external format. (contributed by Ivan
1066 * minor incompatible change: pretty printing of objects of type
1067 (cons symbol) is, in the default pprint-dispatch-table, now
1068 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1070 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1071 called later in a class's lifetime, possibly as late as when the
1072 first instance of the class is created. Previously,
1073 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1074 class became finalizeable.
1075 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1076 for multibyte external-format streams. (thanks to "vbzoli")
1077 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1078 with :ALLOCATION :CLASS inherited from superclasses of the
1080 * fixed bug: anonymous classes can now be created using the :NAME
1081 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1082 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1083 * fixed bug: core-files saved with :EXECUTABLE T can again be
1084 executed when SBCL_HOME isn't set. (reported by James Knight)
1085 * fixed bug: toplevel LOCALLY forms with declarations could
1086 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1087 * fixed bug: printing from several different threads using different
1088 values of *print-case* could cause invalid output, due to
1089 some internal special variables of the printer not being bound
1090 thread-locally (reported by Max Mikhanosha)
1091 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1092 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1093 (reported by Pascal Costanza)
1094 * fixed bug: FINALIZE-INHERITANCE is called from
1095 REINITIALIZE-INSTANCE on classes when the class has previously
1096 been finalized, as required by AMOP.
1097 * minor code generation optimizations:
1098 ** better register allocation in CLOS dispatching functions
1099 ** overflow detection when coercing signed bytes to fixnums on x86-64
1100 ** is now implemented with one IMUL instruction instead of three shifts
1101 ** more efficient bit-vector access on x86 and x86-64
1102 ** more efficient access to raw structure slots on x86 and x86-64
1103 * fixed some bugs revealed by Paul Dietz' test suite:
1104 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1105 return its argument.
1107 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1108 * feature: thread support on Solaris/x86, and experimental thread support
1110 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1112 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1113 default method for SLOT-UNBOUND.
1114 * minor incompatible change: prevent the user from specializing the
1115 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1116 somewhat counter to the intent of the protocol, I (CSR) think, and
1117 additionally it just doesn't work in SBCL as currently
1118 implemented, thanks to optimizations (that are always valid for
1119 the other three SLOT-VALUEish functions, but not for the setter).
1120 * minor incompatible change: the :SB-LDB feature is now enabled by
1121 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1122 the low-level debugger.
1123 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1124 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
1125 down to an SB-SYS:FD-STREAM, allowing direct communication in
1126 more cases. Temporary files and pipes are still used as a fallback
1128 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1129 on the non-reentrant C functions localtime(3) and gmtime(3).
1130 * bug fix: global optimization policy was not visible in LOCALLY and
1132 * bug fix: class objects can be used as specializers in methods.
1133 (reported by Pascal Costanza)
1134 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1135 with a type error. (reported by blitz_ on #lisp)
1136 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1137 failed with a type error. (reported by Pascal Bourguignon)
1138 * bug fix: merging pathnames against defaults with :DIRECTORY
1139 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1140 (reported by James Y Knight)
1141 * bug fix: saving large (>2GB) cores on x86-64 now works
1142 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1143 constant index and a (simple-array (signed-byte 32)) array
1144 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1145 error (patch by Robert J. Macomber)
1146 * feature: TIME now displays the amount of run-time spent in GC
1147 * bug fix: The debugger now does a better job of respecting
1148 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1149 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1150 workaround for bug 403.)
1151 * bug fix: floating point exception handling now works on FreeBSD
1152 (thanks to NIIMI Satoshi)
1153 * fixed some bugs revealed by Paul Dietz' test suite:
1154 ** MISC.641: LET-conversion were not supposed to work in late
1156 * improvements to the Win32/x86 port:
1157 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1158 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1160 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1161 * new feature: source path information is generated for macro-expansion
1162 errors for use in IDE's like Slime (thanks to Helmut Eller)
1163 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1164 * bug fix: compiler does not loop forever on an invalid type in
1166 * improvement: compilation of most CLOS applications is significantly
1168 * optimization: added a limited bytecode compiler for simple toplevel
1169 forms, speeding up compilation and FASL loading
1170 * bug fix: the statistical profiler now properly distinguishes anonymous
1173 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1174 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1175 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1176 into subclasses of the finalized class. Now user calls to
1177 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1178 system return before any subclasses are finalized.
1179 * minor incompatible change: The reader no longer ignores errors
1180 regarding non-existent packages in #+ and #- feature tests.
1181 * new feature: command line options --no-sysinit, --no-userinit to
1182 inhibit loading the corresponding init files
1183 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1184 for sending data through UDP sockets (thanks to François-René Rideau)
1185 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1186 error is signalled instead (thanks to François-René Rideau)
1187 * minor incompatible change: Error signalling behaviour of lexical
1188 operations violating package locks has changed slightly. Refer to
1189 documentation on package locks for details.
1190 * enhancement: EVAL can process IF-expressions without resorting to the
1192 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1193 constant-folded properly due to missing out-of-line functions.
1194 (reported by Mika Pihlajamäki)
1195 * bug fix: LISTEN sometimes returned T even in cases where no data was
1196 immediately available from the stream
1197 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1198 were reversed. (reported by Levente Mészáros)
1199 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1200 when given a vector displaced to an adjustable array. (reported
1202 * bug fix: derivation of float boundaries from numbers outside the
1203 appropriate float range (reported by John Wiseman)
1204 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1206 * bug fix: precomputing cache entries for generic functions with
1207 some subclasses of specializers as yet invalid does not attempt to
1208 fill a cache line with a negative offset. (reported by Levente
1210 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1211 allow condition class objects as arguments to DOCUMENTATION and
1212 (SETF DOCUMENTATION); only find and set documentation for
1213 structure names for the STRUCTURE doc-type. (suggested by Gary
1215 * improvements to the Win32/x86 port:
1216 ** (user-homedir-pathname) and default initialization file
1217 locations now know about the user's "Documents and Settings"
1218 directory (thanks to Yaroslav Kavenchuk)
1219 ** run-program is implemented (thanks to Mike Thomas)
1220 ** sockets support (thanks to Timothy Ritchey)
1221 ** better backtrace support (thanks to Alastair Bridgewater)
1222 ** sb-grovel supported
1223 ** asdf-install and sb-posix work somewhat
1224 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1225 * improvements to the Solaris/x86 port:
1226 ** works on Solaris 11/Solaris Express
1227 ** floating-point exception handling support
1228 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1229 * fixed some bugs revealed by Paul Dietz' test suite:
1230 ** REMOVE-METHOD returns its generic function argument even when
1231 the method is not one of the generic functions' methods.
1232 ** objects declared as MEMBER types can be admissible arguments to
1233 structure accessors.
1234 ** printing characters should simply be printed by the FORMAT ~:C
1236 ** compiler failure when compiling functions with hairy constant
1237 defaults for optional parameters.
1238 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1239 function, which is already optimized.
1241 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1242 * new platform: experimental support for SBCL x86/Darwin, including
1243 MacOS X 10.4.5 on Intel.
1244 * new feature: Unicode character names are now known to the system
1245 (through CHAR-NAME and NAME-CHAR).
1246 * new feature: the filesystem location of SBCL's core file is
1247 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1248 * minor incompatible change: the contrib modules SB-POSIX and
1249 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1250 this change is to make it easier to distribute
1251 location-independent binaries.
1252 * bug fix: as implied by AMOP, standardized classes no longer have
1253 slots named by external symbols of public packages. (reported by
1255 * optimization: calling functions via constant symbols -- as in
1256 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1257 via the function object as in (FUNCALL #'FOO).
1258 * optimization: on x86 and x86-64, the calling convention for the
1259 case of dealing with an unknown number of values has been altered
1260 to be friendlier to the prediction heuristics implemented,
1261 particularly with reference to CALL and RET pairing. (thanks to
1262 Alastair Bridgewater)
1263 * optimization: on x86, the code for access to thread-local symbol
1264 values and binding/unbinding of thread-local symbols is smaller.
1265 (thanks to Alastair Bridgewater)
1266 * enhancement: CONSTANTP is now able to determine constantness of
1267 more complex forms, including calls to constant-foldable standardized
1268 functions and some special forms beyond QUOTE.
1269 * fixed bug: occasional GC crashes on Solaris/x86
1270 * optimization: x86-64 supports stack allocation of results of simple
1271 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1272 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1273 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1274 (thanks to James Knight)
1275 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1276 by the standard (thanks to Stephen Compall)
1278 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1279 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1280 be used for bundling the runtime and the core file into one
1281 executable binary. This feature is not currently supported on all SBCL
1282 platforms. (thanks to James Bielman and NIIMI Satoshi)
1283 * new feature: a generational or ephemeral garbage collector is now
1284 the default on the PowerPC platform (both Linux and Darwin). The
1285 old Cheney (stop and copy) collector is a build-time option.
1286 (thanks to Cyrus Harmon, after Raymond Toy)
1287 * minor incompatible change: the method by which SBCL finds its
1288 contributed modules has changed; it no longer relies on symbolic
1289 links from an $SBCL_HOME/systems directory, but searches directly
1290 in the subdirectories of $SBCL_HOME.
1291 * enhancement: the dynamic heap size on the Linux/PPC platform is
1292 markedly larger, even using the older Cheney garbage collector.
1293 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1294 certain complicated string types. (reported by Gary King)
1295 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1296 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1297 * fixed bug: DOCUMENTATION on structures no longer signals an
1298 error if no structure type of the right name exists. (reported by
1300 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1301 applicable non-standard primary or :AROUND method on
1302 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1303 no longer cause unbound variable errors. (reported by Kevin Reid)
1304 * fixed bug: metacircle resolution in cases where methods have slots
1305 added before the slots from STANDARD-METHOD. (reported by Jean
1307 * fixed bug: the Power PC assembly code for calling into lisp
1308 sometimes computed its return address wrongly (depending on the
1309 15th bit of the address, fixed at link time). This used to
1310 manifest itself in a segmentation violation while building PCL.
1311 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1312 many others over the years)
1313 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1314 the stack pointer (treated as a signed integer) is negative.
1315 (thanks to Peter van Eynde)
1317 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1318 * new platform: experimental support for the Windows operating
1319 system has been added. (thanks to Alastair Bridgewater)
1320 * fixed several bugs in and robustified the PPC FFI (including
1321 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1322 * bug fix: allow non-simple string symbol names (reported by Paul
1324 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1326 * bug fix: saving a core corrupted callbacks on x86/x86-64
1327 * bug fix: closed a loophole in metacircularity detection and
1328 grounding in the PCL implementation of CLOS.
1329 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1330 (reported by tomppa on #lisp)
1331 * bug fix: clear the direction flag on Lisp -> C transitions, as
1332 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1333 (reported by Andrej Grozin and Hendrik Maryns)
1334 * optimization: major improvements to GC efficiency on GENCGC platforms
1335 * optimization: faster implementation of EQUAL
1336 * optimization: emit more efficient opcodes for some common
1337 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1338 * optimization: several other minor code-generation improvements on x86-64
1339 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1341 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1342 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1343 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1344 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1345 by ANSI as a generic function, and for consistency (SETF
1346 GENERIC-FUNCTION-NAME) is treated likewise.
1347 * fixed bug #233.b: make constraint propagation notice when a variable
1348 value is changed after it is referenced but before it is used
1349 * fixed bug #296: no more arbitrary behaviour from filenames with
1350 odd characters as --load arguments. (reported by Adam Warner)
1351 * fixed bug #390: :CHARACTER-SET pathname components now work as
1352 expected. (reported by Tim Daly Jr)
1353 * fixed bug #391: complicated :TYPE intersections in slot
1354 definitions no longer cause an error in PCL internals.
1355 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1356 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1357 returning the number of octets which would be written to the
1358 file-stream. (thanks to Robert J. Macomber)
1359 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1360 arguments to the internal stream functions. (thanks to David
1362 * bug fix: stack exhaustion is now handled on the x86/SunOS
1363 platform. (thanks to Daisuke Homma)
1364 * bug fix: more accurate ROOM results on GENCGC platforms
1365 * optimization: improved type inference for arithmetic-for
1366 index variables in LOOP
1367 * optimization: faster floating-point SQRT on x86-64
1368 * fixed some bugs revealed by Paul Dietz' test suite:
1369 ** DOCUMENTATION returns NIL instead of "" for method combinations
1370 that don't have a docstring
1372 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1373 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1374 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1375 therefore are not customizeable by user code (as seems to be at
1376 least permitted and maybe required by AMOP). As a consolation,
1377 however, the SBCL implementation of these functions now calls
1378 REINITIALIZE-INSTANCE as specified by AMOP.
1379 * bug fix: slot-definition documentation is propagated as per ANSI
1380 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1381 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1382 argument, as do eslotd initialization methods. (from Pascal
1383 Costanza's "Closer" project)
1384 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1385 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1387 * bug fix: it is now possible to have more than one subclass of
1388 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1389 (reported by Bruno Haible, Pascal Costanza and others)
1390 * bug fix: the dependent update protocol now works for generic
1391 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1392 and Pascal Costanza)
1393 * bug fix: condition-class instances corresponding to
1394 DEFINE-CONDITION forms are now created eagerly. (reported by
1395 Kalle Olavi Niemitalo on comp.lang.lisp)
1396 * bug fix: floating point printing is more accurate in some
1397 circumstances. (thanks to Simon Alexander)
1398 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1399 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1400 * bug fix: callbacks on OS X now preserve stack-alignment.
1401 (thanks to Cyrus Harmon)
1402 * enhancement: the x86-64 disassembler is much better at
1403 disassembling SSE instructions. (thanks to Lutz Euler)
1404 * enhancement: CHECK-TYPE on a variable now allows type-inference
1405 (thanks to Vincent Arkesteijn)
1406 * optimization: improved performance of EUC-JP external format.
1407 (thanks to NIIMI Satoshi)
1408 * optimization: performance improvements to IO on file streams of
1409 :ELEMENT-TYPE CHARACTER
1410 * optimization: much faster memory allocation on x86-64
1411 * optimization: faster garbage collections (latency and throughput)
1413 * optimization: faster bignum subtraction and division on x86 and x86-64
1414 (thanks to Lutz Euler)
1415 * optimization: more accurate type-inference for loops that use a
1416 floating point index variable or a negative step.
1418 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1419 * bug fix: add a workaround to SBCL looping infinitely at startup on
1420 Linux kernels with apparently buggy implementations of personality().
1421 (thanks to Svein Ove Aas)
1422 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1423 (thanks to David Lichteblau)
1424 * bug fix: local bindings shadow global symbol macros for
1425 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1426 * optimization: non-open coded uses of numeric comparison operators
1427 (e.g. >) no longer cons when called with more than one parameter
1428 on platforms supporting dynamic-extent allocation.
1429 * enhancement: saving cores with foreign code loaded is now supported
1430 on MIPS/Linux in addition to the previously supported platforms.
1431 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1432 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1433 * bug fix: division by zero in sb-sprof when no samples were collected
1434 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1435 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1436 (thanks to Alexander Kjeldaas)
1437 * new feature: ignoring the return values of destructive functions
1438 like NREVERSE signals a compile-time style-warning.
1439 (thanks to Kevin Reid)
1440 * new feature: the alignment of alien structure fields can be
1441 explicitly specified. (thanks to Cyrus Harmon)
1442 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1443 and dump core on SIGQUIT
1445 ** incompatible change: threads do not inherit values of specials
1446 from their parents (see manual)
1447 ** bug fix: threads stacks belonging to dead threads are freed by the
1448 next exiting thread, no need to gc to collect thread stacks anymore
1449 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1450 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1451 ** bug fix: dynamic variable and thread start related gc lossage
1452 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1454 * fixed some bugs revealed by Paul Dietz' test suite:
1455 ** SUBTYPEP is slightly more accurate on heinously complicated
1456 CONS types where some of the members have uncertain (in the
1457 NIL, NIL sense) type relationships to each other.
1459 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1460 no longer purified unless :PURIFY T is explicitly specified.
1461 ** Non-purified cores are significantly smaller than before
1463 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1464 * new feature: timers based on Zach Beane's excellent timer package
1465 * added support for the following external formats: koi8-u,
1466 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1467 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1468 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1469 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1470 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1471 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1472 * incompatible change: a threaded SBCL will no longer revert to
1473 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1474 * bug fix: interrupts are disabled until startup is complete; no
1475 more sigsegvs when receiving a signal to soon
1476 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1478 * bug fix: add a workaround for the memory randomization features in
1479 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1480 workaround will only be in effect on systems with the proc filesystem
1482 * bug fix: printing objects of type HASH-TABLE signals a
1483 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1485 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1486 have been running for over 50 days. (reported by Gilbert Baumann)
1487 * bug fix: the logic for getting names of functions gets less
1488 confused when confronded with alternate-metaclass
1489 funcallable-instances. (reported by Cyrus Harmon)
1490 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1491 consistent, even on internal alternate-metaclass objects.
1492 * bug fix: flush closure information collected by physical
1493 environment analysis prepass before the main pass. (bug reported
1495 * bug fix: compiler pack phase does not modify a hashtable, which is
1496 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1497 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1498 may be expanded. (reported by Alexander <malishev> on c.l.l)
1499 * bug fix: no more style-warnings when compiling code using LAST
1500 under high-SPEED low-SPACE settings. (reported by David Wallin
1502 * fixed some incompatibilities between SBCL's MOP and the MOP
1504 ** the METAOBJECT class is now implemented;
1505 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1506 STANDARD-OBJECT, as required;
1507 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1508 now compatible (as required by VALIDATE-SUPERCLASS); there
1509 remains a consistency requirement over the presence or absence
1510 of the FUNCTION class in the superclass list of finalized
1511 classes; see the manual for more details;
1512 ** the :AROUND method for COMPUTE-SLOTS on
1513 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1514 requested slot ordering.
1516 ** bug fix: parent thread now can be gc'ed even with a live
1518 ** bug fix: binding a special with PROGV to no value is not
1519 the same as that symbol not having been bound (thanks to
1521 ** bug fix: binding specials is thread safe (thanks to
1523 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1524 and SB-SPROF do not die with 'no handler for signal XX in
1525 interrupt_handle_now(..)' anymore
1526 ** bug fix: WITH-TIMEOUT works with multiple running threads
1527 * fixed some bugs revealed by Paul Dietz' test suite:
1528 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1529 the :method-class keyword argument.
1531 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1532 * new port: the Solaris operating system on x86 processors is now
1533 mostly supported, though some rough edges in the environment
1534 remain. (thanks to Daisuke Homma)
1535 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1536 space for its heap. (thanks to Thiemo Seufer)
1537 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1538 closures. (thanks to Thiemo Seufer)
1539 * minor incompatible change: eof selects abort in the debugger.
1540 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1541 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1543 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1544 deprecated, and will go away in a future revision of SBCL.
1545 * minor incompatible change: GC-ON and GC-OFF are no longer
1546 implemented with a counter, it does not matter how many times gc
1547 is switched on or off
1548 * bug fix: discriminating functions for generic function classes
1549 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1550 make invalid assumptions about method precedence order. (reported
1552 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1553 platforms. (thanks to Thiemo Seufer)
1554 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1555 * bug fix: correct pathname printing with printer escaping is on.
1556 (thanks to Kevin Reid)
1557 * bug fix: complex VOP definitions in "user-space" no longer trigger
1558 package locks. (reported by Zach Beane)
1559 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1560 for funcallable-instance functions, and is no different from
1562 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1563 characters in the current readtable. (reported by Nicholas Neuss)
1564 * bug fix: SUBTYPEP on various CONS types returns more a more
1565 accurate acknowledgment of its certainty.
1566 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1567 lists in some cases. This partially fixes bug 384.
1568 * flush all standard streams before prompting in the REPL and the
1570 * bug fix: signal handling and triggering gc do not conflict
1571 directly anymore, in particular a high frequency sb-sprof does
1572 not prevent gc from running
1573 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1574 approximation for timezone and DST information between the
1575 universal time epoch and the smallest negative 32-bit time_t.
1576 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1577 year 1899 so long as the encoded time is non-negative.
1578 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1579 the correct answer for non-constant rotate amounts when performing
1580 an inline 32-bit rotation.
1582 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1583 there is only one thread in the session
1584 ** bug fix: memory leak for streams created in one thread and
1585 written to in another
1586 ** bug fix: lockup when compiled with gcc4
1587 ** bug fix: race that allows the gc to be triggered when gc is
1589 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1590 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1592 ** bug fix: finished threads are gc'ed properly
1593 * fixed some bugs revealed by Paul Dietz' test suite:
1594 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1595 has arguments with a different set of applicable methods from
1596 the orignal arguments.
1597 ** The type error thrown by MAP now has a correct expected-type
1599 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1600 name a compiled function.
1601 ** Three MISC tests where a large bignum was improperly coerced to
1602 a float that couldn't represent that bignum during type
1603 derivation were fixed.
1604 ** SUBTYPEP can now handle types involving the negation of a
1605 list-form FUNCTION type.
1606 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1607 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1608 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1610 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1611 * New feature: Experimental support for bivalent streams: streams
1612 opened with :element-type :default now allow character and binary
1613 (unsigned-byte 8) I/O
1614 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1615 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1617 * bug fix: no more highly sporadic "couldn't check whether ~S is
1618 readable" when reading a stream and an interrupt hits in the middle
1619 of a select system call
1620 * compiler better recognizes complex arrays (reported by Eduardo
1622 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1623 for variables on SBCL built with linkage-tables. (reported by Luis
1625 * various error reporting improvements.
1626 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1627 (Thanks to Thiemo Seufer)
1628 * bug fix: nested reader invokations work correctly
1629 * bug fix: it is possible to have simultaneous references to foreign
1630 code and foreign data with the same name.
1632 ** added x86-64 support
1633 ** incompatible change: the threading api now works with thread
1634 objects instead of thread ids
1635 ** bug fix: threads are protected from signals and interruption when
1636 starting up or going down
1637 ** bug fix: a race where an exiting thread could lose its stack to gc
1638 ** bug fix: don't halt on infinite error in threads if possible
1639 ** fixed numerous gc deadlocks introduced in the pthread merge
1640 ** bug fix: fixed thread safety issues in read and print
1641 ** bug fix: debugger doesn't hang on session lock if interrupted at
1642 an inappropriate moment
1643 ** bug fix: run-program is now thread safe(r)
1644 ** bug fix: inner with-recursive-lock no longer releases the mutex
1645 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1646 * fixed some bugs revealed by Paul Dietz' test suite:
1647 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1648 EXPECTED-TYPE slots filled.
1649 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1651 ** MAKE-CONDITION accepts classes as type-designators.
1652 ** COMPILE may never return NIL.
1653 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1654 range before calling Unix time functions
1656 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1657 * numerous signal handling fixes to increase stability
1658 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1659 * minor incompatible change: we now correctly canonize default
1660 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1661 as per the MOP, rather than the historical (INITARG INITFUNCTION
1662 INITFORM). (reported by Bruno Haible)
1663 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1664 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1665 for more information.
1666 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1667 pathname is a directory pathname.
1668 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1669 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1671 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1672 :METACLASS argument in addition to a class name. (reported by
1673 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1674 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1675 (reported by Bruno Haible; patch from Gerd Moellmann)
1676 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1678 * bug fix: more cleanups to the floating point exception handling on
1679 x86-64 (thanks to James Knight)
1680 * bug fix: the compiler does not try to constant fold calls of
1681 COERCE and BIT-* functions when they return freshly constructed
1682 objects. (reported by Nikodemus Siivola and Paul Dietz)
1683 * optimization: improved the MIPS versions of generic (in the
1684 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1685 * optimization: direct conversion of (unsigned-byte 32) to floats on
1686 the PowerPC platform.
1687 * optimization: structure instances with raw slots now use less
1688 memory, and probably show better memory locality. (thanks to
1690 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1691 are treated as requests for stack allocation on the x86-64,
1692 Alpha-32, PPC and SPARC platforms.
1693 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1694 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1695 (thanks to Tony Martinez)
1697 ** gcing a dead thread can no longer lead to lockups
1698 ** threads block signals until they are set up properly
1699 ** errno is no longer shared by threads
1700 ** interrupt-thread restores the eflags register on x86
1701 ** fixed some lockups due to gc/thread interaction
1702 * fixed some bugs revealed by Paul Dietz' test suite:
1703 ** invalid dotted lists no longer raise a read error when
1704 *READ-SUPPRESS* is T
1705 ** signal an error if a symbol that names a declaration is used
1706 as the name of a type, or vice versa
1707 ** allow using the (declare (typespec var*)) abbreviation for
1708 (declare (type typespec var*)) with all type specifiers
1709 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1710 ** always return NIL from PPRINT-POP when OBJECT is NIL
1711 ** don't signal errors when pretty-printing malformed LABELS,
1712 FLET or MACROLET forms
1713 ** declarations in a DOLIST body are also in scope for the
1715 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1717 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1720 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1721 * fixed cross-compiler leakages that prevented building a 32-bit
1722 target with a 64-bit host compiler.
1723 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1724 opened with :IF-EXISTS :OVERWRITE.
1725 * fixed bug 281: error for an invalid qualifier in a short-form method
1726 combination method is not signalled until the faulty method is called.
1727 * bug fix: iteration variable type inferrer failed to deal with open
1728 intervals. (reported by Alan Shields)
1729 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1730 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1731 or more runtime options were provided to the sbcl binary.
1732 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1733 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1734 * optimization: there's now a fast-path for fixnum arguments in the
1735 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1736 * optimization: the code generated on x86-64 is more compact thanks
1737 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1738 * bug fix: floating-point exception handling now partly works on
1739 x86-64. (Thanks to James Knight)
1740 * improvement to the MIPS backend from Thiemo Seufer: C-style
1741 64-bit long long arguments and return values to alien functions
1743 * fixed some bugs revealed by Paul Dietz' test suite:
1744 ** the type-error signalled from WARN has a filled-in DATUM slot.
1745 ** the type-error required when a stream is not associated with
1746 a file has the stream as its datum.
1747 ** type-errors on single-floats on x86-64 no longer have
1748 :INVALID-OBJECT as the datum
1749 ** the type-errors signalled for invalid function names now have
1750 a correct expected type
1751 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1752 for structures defined with a :TYPE. Documentation strings for
1753 typed structures are no longer immediately discarded
1754 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1755 broadcast streams and synonym streams. FILE-LENGTH now also works
1756 on broadcast streams.
1758 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1759 * incompatible change: the --noprogrammer option, deprecated since
1760 version 0.7.5, has been removed. Please use the equivalent
1761 --disable-debugger option instead.
1762 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1764 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1765 inoperational for a while now) has been completely removed.
1766 * null lexical environments are now printed as #<NULL-LEXENV>,
1767 significantly reducing the amount of clutter in typical backtraces.
1768 * documentation on weak pointers, finalization, and after GC hooks
1769 has been added to the manual.
1770 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1771 as other specialized array types, is much faster. SUBSEQ and
1772 COPY-SEQ on such arrays have also been sped up.
1773 * optimization: EQL is now more efficient when at least other argument
1774 is known to be of type (OR FIXNUM (NOT NUMBER)).
1775 * fixed bug: the runtime is now less vulnerable to changes in the
1776 size of the SBCL object on OS X, and virtual memory is reserved for
1777 all spaces that need to be at a fixed address.
1778 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1779 * fixed bug: finalizers and after GC hooks that cause consing are now
1781 * fixed bug: compiler error messages and summaries are now printed to
1782 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1783 * fixed inference of the upper bound of an iteration variable.
1784 (reported by Rajat Datta).
1785 * fixed bug 211e: calling local functions with duplicated constant
1786 keyword argument no longer causes a bogus style warning about an
1788 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1789 ftype declaration to be disregarded. (reported by Dave Roberts)
1790 * fixed bug 373: caused by erronous compilation of references to alien
1791 variables in the runtime on ppc/darwin.
1792 * fixed bug 376: CONJUGATE type deriver.
1793 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1794 (reported by Baughn on #lisp)
1795 * a cross-compiler bug on non-x86 platforms has been identified and
1796 fixed. (thanks to Bruno Haible)
1797 * improvements to the MIPS runtime code for increased stability.
1798 (thanks to Thiemo Seufer)
1799 * increased the maximimum compact environment size to allow
1800 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1801 * partial workaround for bug 135: don't name the function we're
1802 calling for hairy cases of EVAL, so as not to accumulate one environment
1803 entry per call to EVAL. (reported by Kevin Reid)
1804 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1805 * optimization: type testing for non-vector arrays should be faster.
1806 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1808 * bug fix: setting 31st element of a bit vector to zero did not work
1810 * bug fix: redefining a class definition which failed due to a
1811 previous accessor / function clash now works (but see BUGS entry
1812 #380 for more problems in this area). (thanks to Zach Beane)
1813 * the long form of DEFINE-METHOD-COMBINATION disables method group
1814 checking when given a single method group with pattern *. (thanks
1816 * on x86 compiler supports stack allocation of results of simple
1817 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1818 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1819 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1820 * fixed some bugs related to Unicode integration:
1821 ** the restarts for recovering from input and output encoding
1822 errors only appear when there is in fact such an error to
1824 * fixed some bugs revealed by Paul Dietz' test suite:
1825 ** MISC.549 and similar: late transformation of unsafe type
1826 assertions into derived types caused unexpected code
1828 ** SCALE-FLOAT type deriver is less wrong.
1829 ** type derivers for EXP, LOG and similar functions compute result
1830 types for complex arguments better.
1831 ** (MISC.563) CONJUGATE type deriver works for very restricted
1833 ** out-of-line type testers for character strings are available.
1834 ** EQUAL compiler transform understands specialness of objects
1836 ** accessing double-floats stored on the stack now works on x86-64.
1837 ** debugger internals could sometimes create invalid lispobjs,
1838 resulting in GC crashes.
1839 ** MISC.548: type check weakening can convert required type into
1841 ** initialization forms for bindings are not in scope of free special
1844 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1845 * incompatible change: thread support for non-NPTL systems has
1846 been removed - locking is buggy and unreliable. A threaded
1847 SBCL build will now warn at startup and refuse to create
1848 new threads, unless futex support is detected in the kernel
1849 * incompatible change: the top level REPL now has only an ABORT
1850 restart associated with it, not TOPLEVEL and ABORT as it used to.
1851 TOP and TOPLEVEL are now available as debugger commands for
1852 returning to the top level.
1853 * incompatible change: forms evaluated in the REPL now use the
1854 global optimization policy.
1855 * incompatible change: user- and system-initialization files are
1856 no longer processed with LOAD, but by READ and EVAL; hence the
1857 global optimization policy, startup package, readtable, etc,
1859 * The .fasl file format number has been incremented because of
1860 various incompatible changes.
1861 * internal entry point details and argument counts no longer appear
1862 in backtraces unless explicitly requested by setting
1863 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1864 * built-in and standard functions no longer have names like "top
1865 level local call to FOO".
1866 * fixed bug 32: functions defined in non-null lexical environments
1867 now have more legible printed representation
1868 * fixed bug 33: functions defined in non-null lexical environemnts
1869 are now more amenable to inspection by INSPECT.
1870 * workaround for bug 354: XEPs no longer appear in backtraces unless
1871 explicitly requested.
1872 * fixed bug: receiving the signal which results from attempting to
1873 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1874 SIGBUS on other *BSDs) on architectures where the C stack is also
1875 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1876 to debugger confusion or wild instability. (reported by Cheuksan
1878 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1879 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1880 (reported by Lutz Euler)
1881 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1882 compiled code. (reported by Paul Dietz)
1883 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1884 specialized parameter to a method to something that is not TYPEP
1885 the specializer is now possible.
1886 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1887 face of package deletion.
1888 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1889 pathname. (reported by David Tolpin on c.l.l)
1890 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1891 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1892 STRING-STREAM and FILE-STREAM, respectively.
1893 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1894 than previously; in addition, its test suite is now run on build.
1895 (thanks to Luke Gorrie)
1896 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1897 * optimization: added a immediate representation for single-floats
1899 * fixed some bugs revealed by Paul Dietz' test suite:
1900 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1901 ** attempting to create a package with a colliding nickname causes
1902 correctable errors to be signalled.
1903 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1904 ** several x86-64 backend bugs related to sign-extension of immediate
1907 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1908 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1909 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1911 * fixed loading of multiply forward-referenced layouts.
1912 (thanks to Cheuksan Wang)
1913 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1914 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1915 (see COMPILE-FILE documentation for details of :PRINT option)
1916 * fixed bugs 19 and 317: fixed-format floating point printing is
1917 more accurate. This also fixes a bug reported by Adam Warner
1918 related to the ~@F format directive.
1919 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1921 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1922 dispatch table if the from-char is a dispatch macro character.
1923 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1924 by the wordsize no longer ignore the last word. (reported by Lutz
1926 * fixed bug in type checking of dynamic-extent variables. (reported
1928 * optimization: sequence traversal functions use their freedom to
1929 coerce function designators to functions.
1930 * optimization: code with many calls to CLOS methods specialized on
1931 CLOS classes has had redundant type checks removed.
1932 * optimization: added declarations to speed up operations that access
1933 the internal character database (for example STRING-UPCASE)
1934 * optimization: comparison operations between floats and sufficiently small
1935 fixnums no longer create extra rationals
1936 * fixed some bugs related to Unicode integration:
1937 ** portions of multibyte characters at the end of buffers for
1938 character-based file input are correctly transferred to the
1939 start of the buffer at the next read.
1940 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1941 passing it through to OPEN.
1942 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1943 argument given to internal calls to OPEN.
1944 ** the built-in comment readers (introduced by character sequences
1945 ";" and "#|") are more forgiving to encoding errors; they will
1946 STYLE-WARN and then attempt to resync the stream at a character
1947 boundary. (thanks to Teemu Kalvas)
1948 * fixed some bugs in the x86-64 port:
1949 ** Negative short int return values from c-calls are sign-extended
1951 ** The stack is aligned to 16-bytes for c-calls, as required by
1952 the ABI. (thanks to Cheuksan Wang)
1953 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1954 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1955 for enums. (thanks to Vincent Arkesteijn)
1956 ** Multiple small optimizations and bugfixes for floating point
1958 * fixed some bugs revealed by Paul Dietz' test suite:
1959 ** Space, Tab, Linefeed, Return and Page have the invalid
1960 secondary constituent character trait.
1961 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1963 ** WITH-INPUT-FROM-STRING should only update the index place on
1965 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1966 works more reliably.
1967 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1968 with one-dimensional arrays with fill pointers.
1969 ** TYPE-OF failed on a complex with an integer realpart and a
1971 ** compiler failure during type inference for the code of form
1972 (IF (EQL X (THE ...)) ...) (MISC.535).
1974 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1975 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1976 platform. The port supports 61-bit fixnums, large memory spaces
1977 and reloading shared object files.
1978 * enhancement: saving cores with foreign code loaded is now
1979 supported on ppc/Darwin in addition to the previously supported
1981 * enhancement: the statistical profiler now walks deeper into the
1982 call stack for more meaningful call-graphs and accrued time
1983 reports (x86/x86-64 only). It also now reports time spent in
1985 * enhancement: it is now possible to trace most individual methods
1986 of a generic function in addition to tracing the generic function
1988 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1990 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1991 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1992 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1993 produces an error. (thanks to Vincent Arkesteijn)
1994 * bug fix: NAMESTRING on pathnames with :WILD components in their
1995 directories works correctly. (thanks to Artem V. Andreev)
1996 * fixed bug 125: compiler preserves identity of closures. (reported
1998 * bug fixed: functions with &REST arguments sometimes failed with
1999 "Undefined function" when compiled with (DEBUG 3). (reported by
2001 * bug fix: overflow during compiling of setting element of a bit
2002 vector with constant index and value. (reported by Timmy Douglas)
2003 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2004 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2005 * on x86 compiler partially supports stack allocation of dynamic-extent
2007 * GO and RETURN-FROM do not check the extent of their exit points
2008 when compiled with SAFETY 0.
2009 * fixed some bugs related to Unicode integration:
2010 ** encoding and decoding errors are now much more robustly
2011 handled; it should now be possible to recover even from invalid
2012 input or output to the terminal. (thanks to Teemu Kalvas)
2013 ** provided a first cut at implementing STRING-TO-OCTETS and
2014 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2015 ** altered the SB-MD5 contributed module slightly, changing the
2016 interface just enough for it to be supportable for builds where
2017 lisp characters are not eight bits.
2018 * fixed some bugs revealed by Paul Dietz' test suite:
2019 ** the FORMATTER-generated functions for ~V[ conditionals require
2020 the correct number of arguments.
2021 ** READ-FROM-STRING returns the mandated second value when applied
2022 to displaced strings.
2023 ** the #\Rubout and #\Backspace characters are treated as invalid
2024 constituent characters by the tokenizer.
2026 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2027 * new feature: reloading changed shared object files with
2028 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2029 * new feature: references to foreign variables and functions
2030 can now be compiled and loaded before the corresponding shared
2031 object file is loaded, as long as the foreign definitions are
2032 available at runtime.
2033 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2034 supported. (thanks to Dan Debertin)
2035 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2036 just keywords. (thanks to Vincent Arkesteijn)
2037 * fixed bug #331: structure-class instances corresponding to
2038 DEFSTRUCT forms are now created eagerly.
2039 * fixed bug #345: backtraces from calls to undefined functions work
2040 on x86 as well. Related bug #61 is now also partially fixed on x86
2041 (backtraces from throws to unknown catch tags.)
2042 * bug fix: lambda-list parsing is now stricter vrt. order and number
2043 of lambda-list keywords.
2044 * bug fix: as specified by AMOP, an error is signalled if a
2045 class-option appears multiple times in a DEFCLASS form. (reported
2047 * bug fix: RANDOM can be compiled when the compiler derives the type
2048 of its numeric argument as a disjoint set of small integers.
2049 (reported by Paul Dietz)
2050 * bug fix: starting a core saved with shared objects loaded when
2051 those objects are not available no longer causes threaded SBCL to
2052 hang. (reported by Sean Ross)
2053 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2055 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2056 argument, which must always be NIL. (reported by Kalle Niemitalo)
2057 * bug fix: printing 1.0d+23 no longer results in an error.
2058 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2059 * bug fix: structure slot setters preserve evaluation order. (thanks
2061 * fixed some bugs related to Unicode integration:
2062 ** RUN-PROGRAM can allow its child to take input from a Lisp
2063 stream. (reported by Stefan Scholl)
2064 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2065 locales. (reported by Ken Causey)
2066 * fixed some bugs revealed by Paul Dietz' test suite:
2067 ** INCF, DECF and REMF evaluate their place form as specified in
2069 ** FORMATTER expands ~{ ~} iteration directives with V or #
2070 parameters correctly.
2071 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2072 consequent uses no arguments correctly.
2073 ** the system has a partial understanding of the (COMPLEX RATIO)
2075 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2078 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2079 * new feature: a build-time option (controlled by the :SB-UNICODE
2080 keyword feature, enabled by default) for building the system with
2081 support for the entire 21-bit character space defined by the
2083 * new feature: the system now has rudimentary external-format
2084 support; the primary user-visible change at this time is that
2085 characters with the high bit set (such as lower-case-e-acute) will
2086 print correctly to a terminal in a UTF-8 environment.
2087 * minor incompatible change: BASE-CHAR no longer names a class;
2088 however, CHARACTER continues to do so, as required by ANSI.
2089 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2090 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2091 has been moved to the SB-EXT package (temporarily re-exported from
2093 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2094 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2096 * fixed bug #351: better error-handlind and reporting for malformed
2098 * fixed bug #350: bignum-printing is now more memory-efficient,
2099 allowing printing of very large bignums, eg. (expt 2 10000000).
2100 (reported by Bruno Haible)
2101 * fixed bug #302: better primitive-type selection for intersection
2103 * fixed bug #308: non-graphic characters now all have names, as
2104 required. (reported by Bruno Haible)
2105 * bug fix: redefining a class with different superclasses now correctly
2106 removes it from the direct-subclasses of its previous superclasses.
2107 (reported by David Morse)
2108 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2109 new value now works. (reported by Bruno Haible)
2110 * bug fix: correct canonicalization of multiple non-standard slot
2111 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2112 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2113 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2114 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2115 now exists, an signals an error.
2116 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2117 during macroexpansion for non-iteration variables as well. (reported
2118 by Bruno Haible for CMUCL)
2119 * bug fix: Cyclic structures and unprintable objects in compiler
2120 messages no longer cause errors. (reported by Bruno Haible)
2121 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2122 and READ-FROM-STRING all now return a primary value of NIL if
2123 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2124 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2125 (reported by Bruno Haible for CMUCL)
2126 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2127 do not designate a condition. (reported by Bruno Haible for
2129 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2130 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2131 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2132 permitting resolution in favour of any of the conflicting symbols.
2133 (reported by Bruno Haible for CMUCL)
2134 * bug fix: EQUAL compiler optimizations is less aggressive on
2135 strings which can potentially compare true despite having distinct
2136 specialized array element types.
2137 * bug fix: unit enumerations can be defined without dividing by
2138 zero. (thanks to Vincent Arkesteijn)
2139 * FORMAT compile-time argument count checking has been enhanced.
2140 (report from Bruno Haible for CMUCL)
2141 * a partial workaround for the bug 262: the compiler does not try to
2142 inline-expand a local function doing RETURN-FROM from a deleted
2143 BLOCK. (thanks to Peter Denno for the bug report and to David
2144 Wragg for the simple test case)
2145 * fixed some bugs revealed by Paul Dietz' test suite:
2146 ** RENAME-PACKAGE allows all package designators as new package
2148 ** constraint propagation and lambda variable substitution are
2149 more cautious in dealing with partially deleted code.
2150 ** compiler sometimes lost reoptimization passes.
2151 ** CERROR, given a condition as condition designator, passes its
2152 remaining arguments to the continue format control without
2154 ** Case-altering FORMAT directives work correctly on non-ASCII
2156 ** The REAL type specifier handles bounds outside the floating
2157 point ranges without signalling FLOATING-POINT-OVERFLOW.
2158 ** Functions with IR1-transformations can create intercomponent
2159 references to global functions.
2160 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2162 ** FORMAT ~R treats a nil value for its first parameter correctly.
2164 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2165 * enhancement: saving cores with foreign code loaded is now
2166 supported on x86/NetBSD and sparc/Linux in addition to the previously
2167 supported platforms.
2168 * bug fix: on some platforms repeated installations caused multiple
2169 copies of HTML documentation to be installed -- should not happen
2170 any more. (reported by Stefan Scholl)
2171 * bug fix: parsing self-recursive alien record types multiple times
2172 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2173 original patch by Helmut Eller for CMUCL)
2174 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2175 (thanks to Richard Kreuter)
2176 * bug fix: defining classes whose accessors are methods on existing
2177 generic functions in other (locked) packages no longer signals
2178 bogus package lock violations. (reported by François-René Rideau)
2179 * bug fix: special variables as DEFMETHOD parameters no longer have
2180 associated bogus type declarations. (reported by David Wragg and
2182 * bug fix: read-write consistency on streams of element-type
2183 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2184 * bug fix: redefiniton of the only method of a generic function with
2185 no DEFGENERIC no longer emits a full WARNING. In addition,
2186 redefinition of generic functions with no DEFGENERIC to an
2187 incompatible lambda list now signals an error. (thanks to Zach
2189 * bug fix: DEFGENERIC now works even when there's a function of the
2190 same name in an enclosing lexical environment. (thanks to Zach
2192 * fixed compiler failure, caused by instrumenting code during
2193 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2194 * optimization: added loop analysis and improved register allocation
2195 * fixed some bugs revealed by Paul Dietz' test suite:
2196 ** POSITION on displaced vectors with non-zero displacement
2197 returns the right answer.
2198 ** (SIMPLE-STRING) is a valid type specifier for sequence
2200 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2202 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2203 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2205 ** The justification version of the FORMAT ~< directive treats
2206 non-zero minpad parameter correctly.
2208 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2209 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2210 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2211 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2212 the supported interface.
2213 * new feature: Single-stepping of code compiled with DEBUG 2 or
2214 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2215 * new feature: saving cores with foreign code loaded is now
2216 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2217 Timothy Moore's work for CMUCL)
2218 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2219 parameters to * instead of NIL if no initform is supplied.
2220 (reported by Johan Bockgaard)
2221 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2222 correctly when FUNCALL appears as the car of the form. Note:
2223 despite this FUNCALL forms are not currently subject to
2224 compiler-macro expansion. (port of Raymond Toy's fix for the
2225 same from CMUCL, reported by Johan Bockgaard)
2226 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2227 (thanks for Teemu Kalvas)
2228 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2229 case instead of terminating the iteration (thanks for Julian
2230 Squires, Sean Champ and Raymond Toy)
2231 * bug fix: incorrect expansion of defgeneric that caused a style
2232 warning. (thanks for Zach Beane)
2233 * bug fix: slot accessor effective method computation works properly
2234 for classes with multiple non-standard applicable methods on
2235 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2236 * on x86 compiler supports stack allocation of results of LIST and
2237 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2238 CMUCL implementation by Gerd Moellmann)
2239 * fixed some bugs revealed by Paul Dietz' test suite:
2240 ** FORMAT strings with both the ~<~:;~> form of the justification
2241 directive and pretty-printing directives cause an error.
2243 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2244 * incompatible change: the internal functions
2245 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2246 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2247 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2248 instead of the old functions.
2249 * new feature: on platforms where "dladdr" is available foreign
2250 function names now appear in backtraces. (based on Helmut Eller's
2252 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2253 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2255 * documentation: ASDF manual is now distributed with SBCL.
2256 * bug fix: SBCL can now load its contributed modules with REQUIRE
2257 even if the system-provided entries have been removed from
2258 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2260 * bug fix: backtraces involving undefined functions or assembly
2261 routines are more informative. (thanks to Brian Downing)
2262 * bug fix: mutually referent alien structures now work correctly.
2263 (reported by Rick Taube)
2264 * bug fix: structures defined by WITH-ALIEN can be referred to
2265 within other definitions in the same WITH-ALIEN.
2266 * bug fix: division operators (MOD, TRUNCATE and the like) with
2267 constant zero divisors and integer dividends no longer generate
2269 * bug fix: provide default methods for INPUT-STREAM-P and
2270 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2271 * bug fix: improve the detection and resolution of MOP metacycles
2272 (where effective method computation depends on the generic function
2273 having its effective method computed). (reported by Bruno Haible)
2274 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2275 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2276 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2277 * bug fix: pathnames with relative directory components can be
2278 represented relative to default pathnames.
2279 * optimization: in taking the GCD of bignums, reduce the two bignums
2280 to approximately the same size (using Euclid's algorithm) before
2281 applying the more sophisticated binary GCD. (thanks to Juho
2283 * optimization: COUNT on bitvectors now operates word-at-a-time.
2284 * optimization: ASH with a positive, but not necessarily constant,
2285 (leftwards) shift, when in a modular context, is compiled to a
2287 * fixed some bugs revealed by Paul Dietz' test suite:
2288 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2289 if the corresponding argument is NIL.
2290 ** FORMAT directives accepting a minpad parameter treat negative
2292 ** literal commas as character parameters to FORMAT directives are
2294 ** literal spaces directly after ~<Newline> directives within a
2295 format-logical-block (~:< ~@:>) do not induce :FILL-style
2296 conditional newlines.
2297 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2298 as specified: it no longer includes conditional newlines).
2299 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2301 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2302 :PER-LINE-PREFIX argument does not evaluate to a string.
2304 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2305 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2306 the manual for details; for now, package locks can be disabled by
2307 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2308 if no major problems are found then it is likely that they will be
2309 compiled in unconditionally.
2310 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2311 unsupported operators on all platforms. To load a shared library
2312 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2313 object file, link it into a shared library outside of SBCL and
2314 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2316 * bug workaround: ROOM T and the GC were not working together
2317 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2318 reporting facility aren't preserved. That reporting has been
2319 disabled, so now until and unless someone figures out how to make it
2320 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2321 * minor incompatible change: as threatened around sbcl-0.8.0, the
2322 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2323 The symbols are also exported from SB-PCL for backwards
2324 compatibility, but more so than before SB-PCL should be treated as
2325 an implementation-internal package.
2326 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2328 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2329 It is known as of this release not to work on the Alpha, however.
2330 * fixed bug #167: errors signalled due to illegal syntax in method
2331 bodies are now more legible.
2332 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2333 designators and can hence be used with TYPEP.
2334 * fixed bug #333: CHECK-TYPE now ensures that the type error
2335 signalled, if any, has the right object to be accessed by
2336 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2337 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2338 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2340 * fixed bug #334: programmatic addition of slots using specialized
2341 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2342 and :ALLOCATION :CLASS slots.
2343 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2344 float exponents. (rereported by Peter Seibel)
2345 * fixed a bug: #\Space (and other whitespace characters) are no
2346 longer considered to be macro characters in standard syntax by
2347 GET-MACRO-CHARACTER.
2348 * fixed bug: initialization of condition class metaobjects no longer
2349 causes an instance of the condition to be created. (reported by
2351 * fixed bug: it is now possible to have slots such that
2352 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2353 description is neither :INSTANCE nor :CLASS.
2354 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2355 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2356 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2357 non-standard SLOT-DEFINITION-ALLOCATION values.
2358 * fixed bugs: various race conditions handling exiting threads.
2359 CL-PPCRE's thread torture test now passes.
2360 * fixed arguably-a-bug: GC time proportional to number of threads in
2361 system even when most of them are idle
2362 * optimization: improved performance of BIT and SBIT on bit-vectors.
2363 * .fasl file incompatibility: The fasl file version number has
2364 been incremented because of changes associated with package locks.
2366 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2367 * minor incompatible change: the system no longer provides
2368 optimization hints (conditions which are TYPEP
2369 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2370 mode; these hints are still emitted when higher SPEED optimization
2372 * new contrib module: a sampling profiler (profiling by statistical
2373 sampling, rather than by instrumenting functions) is available as
2374 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2375 * the behaviour of the standard function ED is now customizeable by
2376 third parties through a hook variable: see ED's documentation
2377 string for information on the protocol.
2378 * the compiler no longer emits efficiency notes for (FUNCALL X)
2379 when the type of X is uncertain under default optimization
2381 * fixed bug 276: mutating a binding of a specialized parameter to a
2382 method to something that is not TYPEP the specializer is now
2384 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2385 exhibit the required behaviour on the x86 platform. (thanks to
2386 Peter van Eynde, Eric Marsden and Bruno Haible)
2387 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2388 even for difficult arguments. (reported by Peter Graves)
2389 * fixed bug 141a: the backquote printer now descends quoted
2391 * fixed another bug in backquote printing: no more destructive
2392 modification of the form's list structure. (reported by Brian
2394 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2395 move between its address being taken and the call to
2396 interrupt_thread, fixing a crashing race condition.
2397 * the SB-POSIX contrib implementation has been adjusted so that it
2398 no longer exhibits ridiculously poor performance when constructing
2399 instances corresponding to C structs.
2401 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2402 * minor incompatible change: the sb-grovel contrib now treats C
2403 structures as alien (in the sense of SB-ALIEN) objects rather than
2404 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2405 has implications for memory management of client code
2406 (sb-grovel-returned objects must now be manually managed) and for
2407 type safety (alien objects now have full types).
2408 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2409 used to control emission of compiler diagnostics, rather than the
2410 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2411 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2412 quality should be considered deprecated.
2413 * install.sh now installs the user manual as well
2414 * (not quite a new documentable feature, but worth considering in
2415 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2416 beginnings of a semantically meaningful condition hierarchy is
2417 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2419 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2420 designator as the defaults argument.
2421 * fixed bug: Displaced arrays whose displaced-to array has become
2422 too small now cause ARRAY-DIMENSION to signal an error, providing
2423 for safer bounds-checking. (reported by Bruno Haible)
2424 * fixed bug: DEFCLASS slot definitions with identical :READER and
2425 :WRITER names now signal a reasonable error. (reported by Thomas
2427 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2429 * fixed bug: Invalid slot specification errors now print correctly.
2430 (thanks to Zach Beane)
2431 * fixed bug 320: Shared to local slot value transfers in class
2432 redefinitions now happen corrently from superclasses as
2433 well. (reported by Bruno Haible)
2434 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2436 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2437 improper lists correctly. (reported by Bruno Haible)
2438 * fixed bug 313: source-transform for <fun-name> was erroneously
2439 applied to a call of a value of a variable with name <fun-name>.
2440 (reported by Antonio Menezes Leitao)
2441 * fixed bug 307: The obsolete instance protocol ensures that
2442 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2443 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2444 remove dead unknown-values globs from the middle of the stack.
2445 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2446 easier to resume long computations after using *BREAK-ON-SIGNALS*
2447 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2448 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2449 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2450 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2451 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2452 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2454 * fixed a (fairly theoretical) bug in string printing: if
2455 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2456 does not have array-element-type equal to the most general string
2458 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2459 function name. (thanks to Nikodemus Siivola)
2460 * fixed bug: compile-time format string checker failed on
2461 non-closed ~{. (reported by Thomas F Burdick)
2462 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2463 don't warn on legal loop code involving more than one aggregate
2464 boolean. (thanks to Nikodemus Siivola)
2465 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2466 in keyword position to MAKE-PACKAGE was not being reported as
2468 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2469 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2471 * fixed bugs 280 and 312: the checking for multiple definitions in a
2472 file is less likely to become confused by uses of inline
2474 * fixed bug: the #S reader macro performs the keyword coercion
2475 specified for slot names. (reported by Kalle Niemitalo)
2476 * fixed bug: lambda lists may contain symbols whose names start with
2477 & but are not lambda-list-keywords; their occurrence triggers a
2479 * fixed bug 321: define-method-combination argument lambda lists do
2480 not cause invalid code to be generated when &optional or &aux
2481 variables have default values. (reported by Bruno Haible)
2482 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2483 have CLOS classes; this appears also to have fixed reported
2484 instability in stack exhaustion detection.
2485 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2486 MUFFLE-WARNING when no associated restart is present is now
2488 * optimization: rearranged the expansion of various defining macros
2489 so that each expands into only one top-level form in a
2490 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2492 * optimization: used a previously little-used slot in symbols to
2493 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2495 * fixed some bugs revealed by Paul Dietz' test suite:
2496 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2498 ** Fixed an optimization bug related to inheritance of initforms
2499 from local to shared slots.
2500 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2501 ** CAST optimizer forgot to flush argument derived type.
2502 ** print/read consistency on floats is now orders of magnitude
2503 more likely. (thanks also to Bruno Haible for a similar report
2505 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2506 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2507 for objects of type REAL. Make it so.
2508 ** SXHASH is specified (infelicitously) to respect similarity,
2509 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2510 it so. (thanks to Markus Ziegler)
2511 ** on the Alpha, the compiler succeeds in compiling functions
2512 returning a known number of arguments greater than 63.
2513 ** fixed handling of invalid NIL arguments in keyword position
2515 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2517 ** provided a readably-printable representation for RANDOM-STATE
2519 ** ensured that pathnames, where they have a namestring, always
2520 print using #P"..." syntax.
2522 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2523 * Support for the forthcoming 2.0 version of the NetBSD kernel
2524 running on x86 hardware has been added. (thanks to Perry
2525 E. Metzger most immediately, and others for their past work)
2526 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2527 current release version; SBCL's OpenBSD support had been broken
2528 since about the time of OpenBSD's switch to ELF binary format.)
2529 * [placeholder for DX summary]
2530 ** user code with &REST lists declared dynamic-extent, under high
2531 speed or space and low safety and debug optimization policy.
2532 * The manual has been converted to Texinfo format and the debugger
2533 chapter from the cmucl manual has been added.
2534 * A facility has been added to extract documentation strings from
2535 sbcl and store them as Texinfo-formatted snippets for inclusion in
2536 the manual (via Texinfo's @include directive)
2537 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2538 the test case to Dave Roberts)
2539 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2540 pointers. (reported by Sean Ross)
2541 * bug fix: PROFILE output is printed nicely even for large numerical
2542 values. (thanks to Zach Beane)
2543 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2544 greater than 32 handle EOF correctly.
2545 * bug fix: on X86 an immediate argument of the IMUL instruction is
2546 correctly printed in disassembly. (thanks to Lutz Euler)
2547 * bug fix: class slots in redefined classes preserve their old
2548 values. (thanks to Bruno Haible and Nikodemus Siivola)
2549 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2550 succeeds. (reported by Marco Baringer)
2551 * fixed some bugs revealed by Paul Dietz' test suite:
2552 ** READ-SEQUENCE now works on ECHO-STREAMs.
2553 ** RATIONALIZE works more according to its specification. (thanks
2556 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2557 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2558 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2559 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2560 should matter to you only if you rebind the printer control
2561 variables and then find you want different bindings in the
2562 debugger than in the ordinary execution of your program.)
2563 * The runtime build system has been tweaked to support building
2564 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2565 assembler and linker. (thanks to Nikodemus Siivola)
2566 * Unbound, undefined, undeclared variables now trigger full
2567 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2568 more often programmer error than deliberate exploitation of undefined
2570 * optimization: the hash algorithm for strings has changed to one
2571 that is less vulnerable to spurious collisions. (thanks to Juho
2573 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2574 needless bounds checking. (thanks to Juho Snellman)
2575 * optimization: implemented multiplication as a modular
2576 (UNSIGNED-BYTE 32) operation on the PPC backend.
2577 * fixed some bugs revealed by Paul Dietz' test suite:
2578 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2580 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2581 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2582 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2584 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2586 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2588 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2589 their output stream on EOF from read.
2590 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2591 have been read to end-of-file.
2592 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2594 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2595 description of determination of which consecutive characters
2597 ** Printing the "Space" character with escaping on now yields "#\\ ",
2598 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2599 ** Reading floating-point numbers with *READ-BASE* set to a number
2600 less than 10 works correctly.
2601 ** Reading floating-point numbers with *READ-BASE* set to a number
2602 more than 10 works correctly.
2603 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2604 the readtable currently in effect.
2606 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2607 * minor incompatible change: parsing of namestrings on a physical
2608 (Unix) host has changed; numbers after the final #\. in a
2609 namestring are no longer interpreted as a version field. This is
2610 intented to be largely invisible to the user, except that the
2611 meaning of the namestring "*.*.*" has changed: it now refers to a
2612 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2613 should usually be replaced by
2614 (make-pathname :name :wild :type :wild :version :wild)
2615 with the added benefit that this is more likely to be portable.
2616 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2617 option to OPEN now signals an error if the file being opened
2618 exists; this may have an impact on existing code.
2619 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2620 signals received, on the PowerPC platforms (both Linux and
2621 Darwin). (thanks to Pierre Mai for pointing out the location of
2623 * several fixes on OS X: The system now builds and runs cleanly on
2624 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2625 (thanks to Brian Mastenbrook)
2626 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2627 second-resolution: integer multiples of 1/3600 between -24 and 24.
2628 (thanks to Vincent Arkesteijn)
2629 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2630 type when called with 1 argument; PEEK-CHAR checked type of
2631 PEEK-TYPE only after having read first character from a
2632 stream. (reported by Peter Graves)
2633 * bug fix: the garbage collector now has much better locality
2634 behaviour, and in particular no longer treats all memory as being
2635 exhausted when many small objects point to each other in a deeply
2637 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2638 recognized as being TYPEP their class.
2639 * bug fix: the PUSHNEW documentation string has been corrected.
2640 (thanks to Vincent Arkesteijn)
2641 * bug fix: defaulting of the value for the last of an atypically
2642 large number of multiple values being bound was not being
2643 performed correctly on the Alpha or PPC platforms
2644 * optimization: implemented multiplication as a modular
2645 (UNSIGNED-BYTE 32) operation on the x86 backend.
2646 * optimization: SEARCH on simple-base-strings can now be open-coded.
2647 (see also contrib/compiler-extras.lisp for inspiration for
2648 teaching the compiler about the Boyer-Moore algorithm).
2649 * value, returned by MAX (and MIN) called with several EQUALP, but
2650 not EQL, arguments now does not depend on compiler settings.
2651 * fixed some bugs revealed by Paul Dietz' test suite:
2652 ** in stack analysis liveness information is propagated from
2653 non-local entry points.
2654 ** pathwise CAST removing failed when the CAST node did not start
2656 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2657 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2659 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2660 host is already defined.
2661 ** RENAME-FILE works on streams instead of signalling an internal
2663 ** PEEK-CHAR uses the current readtable when determining whether
2664 or not a character is whitespace.
2665 ** MERGE-PATHNAMES handles the case when the pathname does not
2666 specify a name while the default-pathname specifies a version.
2667 ** Pathnames now stand a better chance of respecting print/read
2669 ** Attempting to use standardized file system operators with a
2670 pathname with invalid :DIRECTORY components signals a
2672 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2674 ** DIRECTORY on logical pathnames is more correct.
2675 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2676 signal a TYPE-ERROR if their argument is not a stream.
2677 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2678 designator argument does not designate a stream.
2679 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2680 examining the synonym.
2681 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2683 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2684 element-type larger than ([UN]SIGNED-BYTE 32).
2686 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2687 * When built with the :SB-FUTEX feature, threaded builds now take
2688 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2689 for faster/more reliable mutex and condition variable support.
2690 * Incompatible change (but one you probably shouldn't have been using
2691 anyway): the interface and code for arbitrating between multiple
2692 threads in the same user session has been redesigned.
2693 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2694 error when called without an explicit environment argument.
2695 (thanks to Nikodemus Siivola)
2696 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2697 confused about their position. (thanks to Adam Warner and Gerd
2699 * bug fix: Pretty printing backquoted forms with unquotations in the
2700 argument list position of various code constructs such as LAMBDA
2701 now works correctly. (reported by Paul Dietz)
2702 * bug fix: Pretty printing unquotations no longer loses all
2703 stream position information.
2704 * optimization: performance of string output streams is now less
2705 poor for multiple small sequence writes.
2706 * optimization: performance of CSUBTYPEP in the presence of complex
2707 expressions involving CONS and NOT many times has been improved.
2708 (reported by Paul Dietz)
2709 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2711 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2712 streams for the REPL, for the debugger, and so on. (thanks to
2714 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2715 * fixed some bugs revealed by Paul Dietz' test suite:
2716 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2717 is ignored if it is too small, rather than propagating through
2718 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2719 ** extremely complex negations of CONS types were not being
2720 sufficiently canonicalized, leading to inconsistencies in
2722 ** VALUES tranformer lost derived type.
2724 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2725 * fixed a bootstrapping bug: the build process no longer assumes
2726 that the various BOOLE-related constants have the same value in
2727 host and target lisps. (noted by Paul Dietz' test suite on an
2728 SBCL binary built from CLISP)
2729 * The system can now be dynamically linked on the MIPS platform,
2730 which enables dynamic loading of foreign code from Lisp. (thanks
2731 to Ralf Baechle for discussions on the MIPS ABI)
2732 * The system now records debugging information for its own source
2733 files in a filesystem-position-independent manner, relative to
2734 the "SYS" logical host.
2735 * fixed a compiler bug: MV-LET convertion did not check references
2736 to the "max args" entry point. (reported by Brian Downing)
2737 * tweaked disassembly notes to be less confident about proclaiming
2738 some instruction as an LRA. (thanks to Brian Downing)
2739 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2740 now each have their own history, command character, and other
2741 characteristics. (thanks to David Lichteblau)
2742 * fixed some bugs revealed by Paul Dietz' test suite:
2743 ** compiler failure in compiling LOGAND expressions including a
2745 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2746 shift greater than 32.
2747 ** FLUSH-DEST did not mark blocks for type check regeneration.
2748 ** HANDLER-CASE failed to accept declarations in handler clauses
2749 in some circumstances.
2751 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2752 * New code in contrib/sb-introspect (still probably not entirely
2753 stable yet) provides some support for smart Lisp development
2754 environments like SLIME.
2755 * The conditions signalled for errors occurring when loading .fasl
2756 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2757 in a way which should help ASDF recover gracefully.
2758 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2759 stuff has been cleaned up. If you code contrib/ stuff, this might
2760 affect you, and you can look at contrib/README, contrib/STANDARDS,
2761 and/or the 0.8.4.27 diff to check.
2762 * In full calls the compiler now does not generate checks for declared
2763 argument types for all arguments.
2764 * various threading fixes
2765 ** and some experimental patches which didn't make it into
2766 the main tree for this release, but which are shipped in
2767 contrib/experimental-thread.patch as a possible fix for some
2768 failures (deadlock, spinning...) in GC-intensive multithreaded
2770 * fixed PPC build problem (source code incompatibility of different
2771 library versions): added offsetof() hackery which attempts to divine
2772 where glibc maintainers put uc_mcontext today
2773 * fixed bug 282: compiler does not trust type assertions while passing
2774 arguments to a full call.
2775 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2776 &OPTIONAL VALUES type parameter.
2777 * fix bug 214: algorithm for noting rejected templates is now more
2778 similar to that of template seletion. (also reported by rydis on
2780 * fixed bug 141b: printing backquoted information readably and prettily
2781 inserts a space where necessary.
2782 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2783 (CHARACTER 10) are now reported as errors, rather than propagated
2784 as unknown types. (reported by piso on #lisp)
2785 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2786 with values NIL and :ERROR. (thanks to Milan Zamazal)
2787 * fixed bug 191c: CLOS now does proper keyword argument checking as
2788 described in CLHS 7.6.5 and 7.6.5.1.
2789 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2790 longer raise an error; further, using a list as a for-as-arithmetic
2791 counter now raises a meaningful error.
2792 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2793 now understood by sequence creation functions such as MAKE-SEQUENCE
2795 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2796 a STRING-INPUT-STREAM.
2797 * compiler enhancement: SIGNUM is now better able to derive the type
2799 * type declarations inside WITH-SLOTS are checked. (reported by
2801 * fixed some bugs revealed by Paul Dietz' test suite:
2802 ** incorrect optimization of TRUNCATE for a positive first
2803 argument and negative second.
2804 ** compiler failure in let-convertion during flushing dead code.
2805 ** compiler failure while deriving type of TRUNCATE on an
2806 interval, containing 0.
2807 ** ASH of a negative bignum by a negative bignum count now returns
2809 ** intersection of CONS types now canonicalizes properly, fixing
2810 inconsistencies in SUBTYPEP.
2812 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2813 * incompatible change: The --disable-debugger command line
2814 option now clobbers the debugger at a more fundamental
2815 level, by redefining #'INVOKE-DEBUGGER instead of by
2816 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2817 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2818 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2819 enter the debugger REPL and then suffer recursive errors
2820 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2821 while under the new system, BREAK in --disable-debugger mode
2822 terminates the system just as an unhandled error would.
2823 * fixed compiler performance when processing loops with a step >1;
2824 * bug fix: DOCUMENTATION now retrieves generic function
2825 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2826 support has been systematized, and now supports the methods
2827 specified by ANSI, along with a default method and a method for
2828 slot documentation. (reported by Nathan Froyd)
2829 * bug fix: effective methods associated with a generic function are
2830 no longer cached over a change of that generic function's method
2831 combination. (reported by Andreas Fuchs)
2832 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2833 names a non-existent directory. (thanks to Andreas Fuchs)
2834 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2835 the PPC platform, lead to stack corruption; this has been fixed.
2836 (reported by Rainer Joswig)
2837 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2838 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2839 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2840 arithmetic in general, is now much more reliable on the PPC
2842 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2843 platform now returns the right answer.
2844 * optimization: restored some effective method precomputation in
2845 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2846 precomputation is now tunable.
2847 * optimization: compiler-internal data structure use has been
2848 reviewed, and changes have been made that should improve the
2849 performance of the compiler by about 20%.
2850 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2851 simple-base-strings and simple-bit-vectors is improved.
2852 * optimization: the optimization of 32-bit logical and arithmetic
2853 functions introduced in version 0.8.3 on the x86 has been
2854 implemented on the mips, ppc and sparc platforms; an
2855 implementation of the same facility, but for 64-bit arithmetic,
2856 has been added for the alpha.
2857 * microoptimization: the compiler is better able to make use of the
2858 x86 LEA instruction for multiplication by constants.
2859 * bug fix: in some situations compiler did not report usage of
2860 generic arithmetic in (SPEED 3) policy.
2861 * bug 145b fix: compiler used wrong type specifier while converting
2862 MEMBER-types to numeric.
2863 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2865 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2866 index argument now works properly on the Alpha platform.
2867 * bug fix: floating point exception treatment on the Alpha platform
2869 * bug fix: FILE-POSITION works much better on string input and
2870 output streams. (thanks to Nikodemus Siivola)
2871 * bug fix: many threading/garbage collection symptoms sorted.
2872 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2873 might be pseudo-atomic.
2874 * internal change: Stopping for GC is now done with signals not
2875 ptrace. GC is now done in whichever thread wanted it, instead of
2877 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2879 * bug fix: result form in DO is not contained in the implicit
2881 * incompatible change: ICR structure is changed; the value part of
2882 CONTINUATION is now called LVAR; corresponding functions are
2883 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2884 * added type deriver for ISQRT (thanks to Robert E. Brown).
2885 * bug fix: better support for loading from the command line when an
2886 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2888 * fixed some bugs revealed by Paul Dietz' test suite:
2889 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2890 ** ROUND and FROUND now give the right answer when given very
2891 small float arguments.
2892 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2894 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2895 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2896 ** LCM should return a non-negative integer.
2897 ** PARSE-INTEGER returned the index of a terminator instead of the
2898 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2899 ** PARSE-INTEGER returned an incorrect index being applied to a
2901 ** LCM with two arguments of 0 returns 0 rather than signalling
2903 ** unsigned addition of a 32-bit constant with the high bit set no
2904 longer causes an internal compiler error on the x86.
2905 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2906 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2907 with negative last argument.
2908 ** byte specifiers with zero size and position no longer cause
2909 an error during type derivation.
2910 ** bignum multiplication on the Alpha platform now returns the
2912 * porting: The system now builds on SuSE AMD64, although it still
2913 generates a 32-bit binary.
2914 * .fasl file incompatibility: The fasl file version number has
2915 been incremented (because of the changes to internal compiler
2916 data structures referred to above).
2918 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2919 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2920 more accurately, on the Darwin kernel running on PowerPC hardware.
2921 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2922 * Compiler code deletion notes now signal a condition of type
2923 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2924 an associated MUFFLE-WARNING restart.
2925 * The compiler now performs limited argument count validation of
2926 constant format strings in FORMAT, and where appropriate in ERROR,
2927 CERROR and WARN. (thanks to Gerd Moellmann)
2928 * New ASDF-INSTALL contrib can be used for automatic download and
2929 installation of third-party Lisp code from CCLAN or other sites
2931 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2932 which forces another thread to execute a function supplied by the
2934 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2935 now accept and act upon their :ELEMENT-TYPE keyword argument.
2936 (reported by Martin Atzmueller, Edi Weitz)
2937 * bug fix: FILE-POSITION now accepts position designators up to
2938 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2939 is the greater. (thanks to Patrik Nordebo)
2940 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2941 Kalle Olavi Niemitalo)
2942 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2943 printable. (reported by Eric Marsden)
2944 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2945 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2946 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2947 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2948 (thanks to Stig Sandoe)
2949 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2950 UNREAD-CHAR now correctly includes the unread character in the
2951 target sequence. (thanks to Gerd Moellmann)
2952 * bug fix in threaded builds: the system can now be suspended and
2953 resumed by shell job control with minimal disruption.
2954 * bug fixes in times and timezones >2038AD
2955 * better handling of "where is GNU make?" problem in build scripts
2956 (thanks to Nikodemus Siivola)
2957 * new optimization: inside a named function any reference to a
2958 function with the same name is considered to be a self-reference;
2959 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2960 optimization quality.
2961 * new optimization on x86: logical functions and + now have
2962 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2963 used when the result is truncated to 32 bits.
2964 * VALUES declaration is partially enabled.
2965 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2966 * fixed some bugs revealed by Paul Dietz' test suite:
2967 ** The system now obeys the constraint imposed by
2968 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2969 types form a lattice under type intersection.
2970 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2971 ** ASSOC now ignores NIL elements in an alist.
2972 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2973 and (1+ MOST-POSITIVE-FIXNUM) answers.
2974 ** The addition of a method with invalid qualifiers to a generic
2975 function does not cause an error to be signalled immediately;
2976 a warning is signalled, and the error is generated only on
2977 calling the generic function.
2978 * changed .fasl file version number, in part to add type codes for
2979 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2980 obscure ANSI requirements
2982 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2983 * fixed bug 148: failure to inline-expand a local function left
2984 garbage, confusing the compiler.
2985 * fixed bugs 3cd: structure slot readers perform type check if the
2986 slot can have an invalid value (i.e. it is either not initialized
2987 or can be written with a less specific slot writer).
2988 * bug fix: the compiler now traps array references to elements off
2989 the end of an array; previously, the bounds checking in some
2990 circumstances could go off-by-one.
2991 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2993 * type declarations for array element types now obey the description
2994 on the CLHS page "Declaration TYPE", as per discussions on
2995 sbcl-help around 2003-05-08. This means that a declaration
2996 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2997 declaration, all references to BAR will be asserted or assumed
2998 (with THE, so dependent on compiler policy) to involve objects of
2999 type FOO. Note that no such declaration is implied in
3000 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3001 * declared types of functions from the "Conditions"
3002 chapter. (reported by Paul Dietz)
3003 * bug fix: CERROR accepts a function as its first argument.
3004 * bug fix: NTH an NTHCDR accept a bignum as index
3005 arguments. (reported by Adam Warner)
3006 * optimization: character compare routines now optimize comparing
3007 against a constant character. (reported by Gilbert Baumann)
3008 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3009 argument now works properly on the MIPS platform.
3010 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3011 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3012 declared to have a functional type, does not cause an error
3014 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3015 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3016 * fixed bug: if last continuation of a deleted block has a
3017 destination, this destination should be deleted too. (reported by
3019 * fixed a bug in the bootstrap process: the host compiler's values
3020 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3021 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3022 test case from Patrik Nordebo)
3023 * improved the ability of the disassembler on the PPC platform to
3024 provide helpful disassembly notes.
3025 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3026 the class in more cases than previously.
3027 * bug fix: FILE-POSITION now understands :START and :END for
3028 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3029 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3030 8) data. (thanks to David Lichteblau)
3031 * bug fix: it is possible to add a method to a generic function
3032 without lambda list.
3033 * bug fix: reader failed to signal END-OF-FILE inside an
3034 object representation. (reported by Nikodemus Siivola)
3035 * fixed some bugs revealed by Paul Dietz' test suite:
3036 ** LAST and [N]BUTLAST should accept a bignum.
3037 ** condition slot accessors are methods.
3038 ** (VECTOR NIL) is a subtype of STRING.
3040 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3041 * minor incompatible change: some nonsensical specialized lambda
3042 lists (used in DEFMETHOD) which were previously ignored now signal
3044 * minor incompatible change: the system is now aware of the types of
3045 variables in the COMMON-LISP package, and will signal errors for
3046 most violations of these type constraints (where previously they
3047 were silently accepted).
3048 * minor incompatible change: COMPILE-FILE now uses the freedom
3049 afforded (ANSI 3.2.2.3) to use derived function types for
3050 functions defined in the same file. This also permits the system
3051 to warn on static type mismatches and function
3052 redefinition. (Currently it does not work with high DEBUG level.)
3053 * minor incompatible change: VALUES declaration is disabled.
3054 * When issuing notes, the compiler now signals a condition of type
3055 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3056 restart for use in user handlers. It is expected that the
3057 COMPILER-NOTE condition will eventually become a condition
3058 supertype to a hierarchy of note types, which will then be
3059 handleable in a similar fashion. However, at the moment, no such
3060 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3061 but it's an implementation detail, not a classification for the
3063 * Changes in type checking closed the following bugs:
3064 ** type checking of unused values (192b, 194d, 203);
3065 ** template selection based on unsafe type assertions (192c, 236);
3066 ** type checking in branches (194bc).
3067 * A short form of VALUES type specifier has ANSI meaning (it has
3068 increased the number of situations when SBCL cannot perform type
3070 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3071 keywords or constants is permissible.
3072 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3073 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3074 classes. (thanks to Antonio Martinez)
3075 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3076 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3077 argument to a pretty-print stream. Instead, it leaves any such
3078 operations to DESCRIBE-OBJECT methods.
3079 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3081 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3082 lambda lists. (thanks to David Lichteblau)
3083 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3084 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3085 (thanks to Gerd Moellmann)
3086 * fixed bug 246: increased compilation speed of long
3087 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3089 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3091 * DEFCONSTANT now throws a condition of type
3092 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3093 constant to a non-EQL value; CONTINUE and ABORT restarts
3094 respectively change and preserve the value.
3095 * fixed bug 63: The code walker, part of the implementation of CLOS,
3096 is now better at handling symbol macros.
3097 * bug fix: There is no longer an internal implementation type named
3098 CL:LENGTH. (reported by Raymond Toy)
3099 * bug fix: In macro-like defining macros/special operators the
3100 implicit block does not enclose the lambda list.
3101 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3102 enclosed in parentheses) are not suitable as type specifiers, and
3103 their use properly signals an error now.
3104 * bug fix: An argument count mismatch for a type specifier in code
3105 being compiled no longer causes an unhandled error at compile
3106 time, but signals a compile-time warning.
3107 * fixed simple vector readable printing
3108 * bug fix: DESCRIBE takes more care over whether the class
3109 precedence list slot of a class is bound before accessing it.
3110 (reported by Markus Krummenacker)
3111 * bug fix: FORMATTER can successfully compile pretty-printer format
3112 strings which use variants of the ~* directive inside.
3113 * bug fix: SEARCH now applies its TEST predicate to the elements of
3114 the arguments in the correct order. (thanks to Wolfhard Buss)
3115 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3116 in type inference. (thanks to Robert E. Brown)
3117 * bug fix: Reading in symbols with an explicit package name of ""
3118 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3119 * fixed some bugs revealed by Paul Dietz' test suite:
3120 ** NIL is now allowed as a structure slot name.
3121 ** Arbitrary numbers, not just REALs, are allowed in certain
3122 circumstances in LOOP for-as-arithmetic clauses.
3123 ** Multiple class redefinitions before slot access no longer
3124 causes a type error.
3125 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3126 association between the name and a class.
3127 ** Generic functions with non-standard method-combination and over
3128 five methods all of which return constants no longer return NIL
3129 after the first few invocations. (thanks to Gerd Moellmann)
3130 ** CALL-NEXT-METHOD with no arguments now passes the original
3131 values of the arguments, even in the presence of assignment.
3132 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3134 ** DISASSEMBLE works with closures and funcallable instances.
3135 ** ADD-METHOD now returns the generic function, not the new method.
3136 ** FIND-METHOD signals an error if the lengths of the specializers
3137 is incompatible with the generic function, even if the ERRORP
3139 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3140 which its argument is a member.
3141 ** DEFCLASS only redefines the class named by its class-name
3142 argument if that name is the proper name of the class;
3143 otherwise, it creates a new class.
3144 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3145 of the UNBOUND-SLOT condition to the name of the slot.
3146 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3147 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3148 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3149 SLOT-MAKUNBOUND in the specified fashion.
3151 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3152 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3153 cross-compilation host. As a consequence, we can now bootstrap our
3154 way up to SBCL starting with a bare gcc toolchain and human-readable
3155 source code (first the source to CLISP, then the source to SBCL).
3156 * A contributed module containing a partial implementation of the
3157 simple-streams interface has been included. (thanks to Rudi
3159 * A contributed module implementing the RFC1321 Message Digest
3160 Algorithm, known as MD5, has been included.
3161 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3162 no longer has any effect, as the code controlled by this feature
3163 has been deleted. (As far as we know, no-one has ever built using
3164 this feature, and its semantics were confused in any case).
3165 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3166 work on conditions (as required by the ANSI specification),
3167 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3168 expected behaviour on conditions. Users should note, however,
3169 that such behaviour is not required by the ANSI specification,
3170 and so use of this behaviour may render their code unportable.
3171 * fixed some bugs revealed by Paul Dietz' test suite:
3172 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3174 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3175 ** SXHASH on condition objects no longer returns NIL.
3176 ** :ALLOCATION :CLASS slots are better treated; their values are
3177 updated on class redefinition, and initforms inherited from
3178 superclasses are applied.
3179 ** REMOVE-METHOD returns its generic function argument even when
3180 no method was removed.
3181 ** SHARED-INITIALIZE now initializes the values of the requested
3182 slots, including those with :ALLOCATION :CLASS.
3183 ** ALLOCATE-INSTANCE now works on structure classes defined via
3184 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3186 ** SLOT-EXISTS-P now works on conditions, as well as structures
3188 ** MAKE-LOAD-FORM now has the required methods on
3189 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3190 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3191 keyword, and now implements the SLOT-NAMES argument.
3192 ** methods with &OPTIONAL arguments no longer allow too many
3193 arguments to be passed in the call without error.
3194 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3195 option is consistent with the required arguments of the generic
3196 function lambda list.
3197 * bug fix: REQUIRE accepts a string designator. (Thanks to
3199 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3200 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3201 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3202 * bug fix: The compiler now checks for duplicated variables in macro
3204 * bug fix: SETQ on globals returns the correct value.
3205 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3206 not a COMPILER-ERROR (followed by some other strange error on
3207 choosing the CONTINUE restart).
3208 * bug fix: make.sh and friends are now more consistent in the way that
3209 they look for GNU "make".
3211 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3212 * experimental native threads support (on x86 Linux >=2.4 only).
3213 This is not compiled in by default: you need to add :SB-THREAD to
3214 the target features. See the "Beyond ANSI" chapter of the manual
3216 * fix for longstanding nonANSIism: The old distinction between
3217 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3218 The return value from CL:FIND-CLASS is now a CLOS class, and
3219 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3220 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3221 * An interface to the MetaObject Protocol, as described in Kiczales,
3222 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3223 MIT Press, 1991, is available from the SB-MOP package.
3224 * incompatible change: the SB-PCL package should now be considered
3225 a private implementation detail, and no longer a semi-private MOP
3227 * minor incompatible change: due to rearrangement for threads, the
3228 control stack and binding stack are now allocated at arbitrary
3229 addresses instead of being hardcoded per-port. Users affected by
3230 this probably have to be doing advanced things with shared
3231 libraries, and will know who they are.
3232 * minor incompatible change: Previously, all --eval forms used were
3233 processed with READ before any of them were processed with EVAL.
3234 Now each --eval form is processed with both READ and EVAL before
3235 the next --eval form is processed. (Thus package operations like
3236 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3237 work as the user might reasonably expect.)
3238 * minor incompatible change: *STANDARD-INPUT* is now only an
3239 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3241 * minor incompatible change: Y-OR-N-P is now character-oriented,
3242 not line oriented. Also, YES-OR-NO-P now works without errors.
3243 (thanks to Antonio Martinez)
3244 * sb-aclrepl module improvements: an integrated inspector, added
3245 repl features, and a bug fix to :trace command.
3246 * Known functions, which cannot be open coded by the backend, are
3247 considered to be able to check types of their arguments. (fixing
3248 a bug report by Nathan J. Froyd)
3249 * fixed a bug in computing method discriminating functions: It is
3250 now possible to define methods specialized on classes which have
3251 forward-referenced superclasses. (thanks to Gerd Moellmann)
3252 * fixed evaluation order in optional entries (reported by Gilbert
3254 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3255 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3256 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3257 required-by-AMOP NAME argument, as well as CLASS and
3258 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3259 * fixed bug 20: DEFMETHOD can define methods using names that are
3260 not the proper names of classes to designate class specializers.
3261 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3262 Unix file descriptors, instead of blowing up. (thanks to Antonio
3264 * Garbage collection refactoring: user-visible change is that a
3265 call to the GC function during WITHOUT-GCING will not do garbage
3266 collection until the end of the WITHOUT-GCING. If you were doing
3267 this you were probably losing anyway.
3268 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3269 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3270 TYPEP the latter but not the former.
3271 * The compiler issues a full WARNING for calls to undefined functions
3272 with names from the CL package.
3273 * MAP-INTO for a vector destination is open coded. (reported by
3274 Brian Downing on c.l.l)
3275 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3276 documentation string.
3277 * fixed some bugs revealed by Paul Dietz' test suite:
3278 ** COPY-ALIST now signals an error if its argument is a dotted
3280 ** Condition slots are now accessed more correctly in the presence
3281 of multiple initargs for a given slot.
3282 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3283 exclude restarts of the same name associated with a different
3285 ** DEFCLASS of forward-referenced classes with another
3286 forward-referenced class in the superclasses list no longer
3288 ** Condition slots are now initialized once each, not multiple
3289 times. (thanks to Gerd Moellmann)
3290 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3292 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3293 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3294 arguments contain duplicated elements.
3295 ** RESTART-CASE understands local macros.
3296 ** RESTART-CASE associates exactly its own restarts with a condition.
3297 ** ENDP in safe mode checks its argument to be of type LIST.
3298 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3299 in question is unbound.
3300 ** Optimized MAKE-INSTANCE functions no longer cause internal
3301 assertion failures in the presence of duplicate initargs.
3302 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3303 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3304 propagated even in the ctor optimized implementation of
3306 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3308 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3309 * a better implementation of SXHASH on (simple) bit vectors,
3310 measured both in execution speed and in distribution of results
3311 over the positive fixnums, has been installed. Likewise, a better
3312 implementation of EQUAL for simple bit vectors is now available.
3313 * fixed CEILING optimization for a divisor of form 2^k.
3314 * fixed bug 240 (emitting extra style warnings "using the lexical
3315 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3316 by Antonio Martinez)
3317 * fixed SXHASH, giving different results for NIL depending on type
3318 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3319 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3320 variable. (found by Rolf Wester)
3321 * SBCL does not ignore type declarations for special
3322 variables. (reported by rif on c.l.l 2003-03-05)
3323 * some bug fixes in contrib/sb-aclrepl/
3324 * fixed some bugs revealed by Paul Dietz' test suite:
3325 ** a bug in the CONS type specifier, whereby the CAR and CDR
3326 types got intertwined, has been fixed;
3327 ** the type system is now able to reason about the interaction
3328 between INTEGER and RATIO types more completely;
3329 ** APPEND, [N]REVERSE and NRECONC check that those their
3330 arguments, which must be proper lists, are really so;
3331 ** An array specialized to be unable to hold elements has been
3332 implemented, as required -- yes, really -- by ANSI;
3333 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3334 on malformed property lists;
3336 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3337 * incompatible packaging change: in line with Unix convention,
3338 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3339 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3340 * REQUIRE and PROVIDE are now optionally capable of doing something
3341 useful. See the documentation string for REQUIRE.
3342 * infrastructure for a managed SBCL contrib system: contributed
3343 modules in this release include:
3344 ** the ASDF system definition facility;
3345 ** an interface to the BSD Sockets API;
3346 ** an ACL-like convenience interface to the repl;
3347 (thanks to Kevin Rosenberg)
3348 ** an implementation of ROTATE-BYTE, with efficient implementation
3350 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3351 gives a closer approximation to the right answer than previously.
3352 (thanks to Raymond Toy)
3353 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3354 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3355 optional environment arguments, as required by ANSI.
3356 * fixed bugs in other functions taking environment objects, allowing
3357 calls with an explicit NIL environment argument to be compiled
3359 * fixed bug 228: primary return values from
3360 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3361 COMPILE or FUNCTION.
3362 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3363 :TYPE will no longer signal errors on innocuous objects.
3364 * fixed bug 231b: SETQ is better at respecting type declarations in
3365 the lexical environment.
3366 * fixed a bug in DEFCLASS: classes named by symbols with no or
3367 unprintable packages can now be defined.
3368 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3369 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3370 * fixed compiler failure related to checking types of functions.
3371 (reported by Robert E. Brown)
3372 * the compiler is now much more consistent in its error-checking
3373 treatment of bounding index arguments to sequence functions: in
3374 (SAFETY 3) code, errors will be signalled in almost all cases if
3375 invalid sequence bounding indices are passed to functions defined
3376 by ANSI to operate on sequences.
3377 * fixed a bug in the build procedure: documentation of SBCL-specific
3378 packages is now preserved and available in the final Lisp image.
3379 * lifted FDEFINITION lookup out of loops in the implementation of
3380 many list operations. (thanks to Robert E. Brown)
3381 * fixed a bug in the reader: the #n# reader macro now works for
3382 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3383 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3384 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3385 E. Brown and Tony Martinez respectively)
3386 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3387 SLOT-BOUNDP: in particular, it is now able to optimize them much
3388 better, and is now not vulnerable to having packages renamed.
3389 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3390 always called when a slot is not present in an instance. (thanks
3392 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3393 longer signal an error on unreading a character following EOF on
3394 the previous constituent stream. (thanks to Tony Martinez)
3395 * fixed some bugs revealed by Paul Dietz' test suite:
3396 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3397 not just nonnegative fixnums;
3398 ** the logical bit-array operators such as BIT-AND now accept an
3399 explicit NIL for their "opt-arg" argument (to indicate a
3400 freshly-consed result bit-array);
3401 ** ELT now signals an error on an invalid sequence index in safe
3403 ** the type system is now cleverer about negations of numeric
3404 types, and consequently understands the BIGNUM and RATIO types
3406 ** the type system is now cleverer about the interaction between
3407 INTEGER and RATIO types: while bugs still remain, many more
3408 cases are accurately computed;
3409 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3410 if it is in the last clause;
3411 ** CONSTANTLY now correctly returns a side-effect-free function in
3413 ** DECLARE is no longer treated as a special-operator; in
3414 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3415 * incremented fasl file version number due to the change in the
3416 DEFSTRUCT-SLOT-DESCRIPTION structure.
3418 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3419 * minor incompatible change: code processed by the "interpreter" or
3420 EVAL now has a compilation optimization policy of (DEBUG 2)
3421 (changed from (DEBUG 1)) to improve debuggability of interactive
3422 development, and to allow the use of the debug RETURN command in
3424 * an experimental implementation of the RETURN command for the
3425 debugger has been included. (thanks to Frederik Kuivinen)
3426 * fixed bug 62: constraints were not propagated into a loop.
3427 * fixed bug in embedded calls of SORT (reported and investigated by
3429 * fixed some bugs revealed by Paul Dietz' test suite:
3430 ** printing and reading of arrays with some dimensions having
3431 length 0 (thanks to Gerd Moellmann);
3432 ** BOA constructor with &AUX argument without a default value does
3433 not cause a type error;
3434 ** CONSTANTP now returns true for all self-evaluating objects.
3436 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3437 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3438 accessors that are related by inheritance, as specified in the
3439 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3440 Valtteri Vuorikoski)
3441 * The compiler is now able to inline functions that were defined in
3442 a complex lexical environment (e.g. inside a MACROLET).
3443 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3445 * Support for the upcoming FreeBSD-5.0 release has been included.
3446 (thanks to Dag-Erling Smorgrav)
3447 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3448 effect when it is not in a toplevel context.
3449 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3450 stand a better chance of being correct. (thanks to Gerd
3452 * fixed bug in COERCE, which now signals an error on coercing a
3453 rational to a bounded real type which excludes the expected
3455 * The compiler is now able to derive types more accurately from the
3456 COERCE and COMPILE functions.
3457 * fixed bug 223: functional binding is considered to be constant
3458 only for symbols in the CL package.
3459 * fixed bug 231: SETQ did not check the type of a variable being set
3460 (reported by Robert E. Brown)
3461 * A new optimization for MAKE-INSTANCE has been included, fixing
3462 various bugs (including relating to :ALLOCATION :CLASS slots and
3463 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3465 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3466 ** As required by ANSI, LOOP now disallows anonymous collection
3467 clauses such as COLLECT I in conjunction with aggregate boolean
3468 clauses such as THEREIS (= I 1);
3469 ** LOOP now signals an error when any variable is reused in the
3470 same loop (including the potentially useful construct analogous
3471 to WITH A = 1 WITH A = (1+ A);
3472 ** IT is only a special loop symbol within the first clause of a
3473 conditional loop clause;
3474 ** LOOP with a typed iteration variable over a hashtable now
3475 signals a type error iff it should.
3476 * fixed some other bugs revealed by Paul Dietz' test suite:
3477 ** FILE-STREAM now names the class previously known as FD-STREAM;
3478 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3479 argument) no longer signals an error;
3480 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3481 of the slot symbol, rather than using the current package
3482 ((:CONC-NAME "") continues to intern the slot's name in the
3484 * incremented fasl file version number, because of the incompatible
3485 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3486 of the new implementation of DEFINE-COMPILER-MACRO.
3488 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3489 * Support for building SBCL for MIPS platforms running in
3490 little-endian mode has now been checked in, and basic
3491 functionality on said platforms verified.
3492 * minor incompatible change: PCL now records the pathname of a file
3493 in which methods and the like are defined, rather than its
3495 * minor incompatible change: TRUENAME now considers the truename of
3496 a file naming a directory to be the pathname with :DIRECTORY
3497 component indicating that directory.
3498 * minor incompatible change: a NAMED clause in the extended form of
3499 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3500 reason for the previous behaviour is unclear.
3501 * more systematization and improvement of CLOS and MOP conformance
3502 in PCL (thanks to Gerd Moellman and Pierre Mai):
3503 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3505 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3506 primary methods with no specializers;
3507 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3509 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3510 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3511 FORWARD-REFERENCED-CLASSes; error reporting on
3512 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3514 ** SXHASH on CLOS instances now uses a slot internal to the
3515 instance to return different numbers on distinct instances,
3516 while preserving the same return value through invocations of
3518 ** DEFMETHOD signals errors when methods with longer incongruent
3519 lambda lists are added to generic functions;
3520 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3521 CLASS, as specified in AMOP;
3522 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3523 on the order returned by the primary method for classes of
3524 class STANDARD-CLASS;
3525 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3526 * fixed some bugs shown by Paul Dietz' test suite:
3527 ** DOLIST puts its body in TAGBODY;
3528 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3530 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3531 value producing form;
3532 ** if more variables are given to PROGV than values, extra
3533 variables are bound and made to have no value;
3534 ** NSUBSTITUTE on list arguments gets the right answer with
3536 ** ELT signals an error of type TYPE-ERROR when the index argument
3537 is not a valid sequence index;
3538 ** LOOP signals (at macroexpansion time) an error of type
3539 PROGRAM-ERROR when duplicate variable names are found;
3540 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3541 ** FUNCALL of special-operators now cause an error of type
3543 ** PSETQ now works as required in the presence of side-effecting
3544 symbol-macro places;
3545 ** NCONC accepts any object as its last argument;
3546 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3548 ** loop-for-as-package does not require a package to be explicitely
3550 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3552 * fixed bug 166: compiler preserves "there is a way to go"
3553 invariant when deleting code.
3554 * fixed bug 172: macro lambda lists with required arguments after
3555 &REST arguments now cause an error to be signalled. (thanks to
3557 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3558 bug. (thanks to Matthew Danish)
3559 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3561 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3562 arguments are lexically rebound. (thanks to Gerd Moellmann and
3564 * fixed bug 194: error messages are now more informative when there
3565 is no primary method applicable in a call to a generic
3566 function. (thanks to Gerd Moellmann)
3567 * fixed bug in command line argument checking (thanks to Julian
3569 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3570 (thanks to Matthew Danish)
3571 * incremented fasl file version number, because of the
3572 SXHASH-related changes in the layout of CLOS data structures
3574 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3575 * minor incompatible change: The runtime (the Unix executable named
3576 "sbcl") is now much pickier about the .core files it will load.
3577 Essentially it now requires .core files to descend from the same
3578 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3579 as the runtime does. (The intent is to prevent the crashes which
3580 can occur, and which can even be reported as mysterious failures,
3581 when people patch the sources or change the build parameters
3582 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3583 sbcl and .core files.)
3584 * fixed bug: VALUES-LIST is no longer optimized away.
3585 * fixed bug 142: The FFI conversion of C string values to Lisp
3586 string values no longer conses excessively. (thanks to Nathan
3587 Froyd porting Raymond Toy's fix to CMU CL)
3588 * began to systematize and improve MOP conformance in PCL (thanks to
3589 Nathan Froyd, Gerd Moellman and Pierre Mai):
3590 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3592 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3593 ** FINALIZE-INHERITANCE is now called on class finalization;
3594 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3595 argument precedence order.
3596 * fixed bug 202: The compiler no longer fails on functions whose
3597 derived types contradict their declared type.
3598 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3599 so it can be non-toplevel.
3600 * The fasl file version number has changed (because of the new
3601 implementation of DEFMACRO).
3602 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3603 safe code, that any length requirement by their type-specifier
3604 argument is valid. The exceptions to this are described in bug
3606 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3607 functions now check the types of their inputs as required by ANSI.
3608 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3609 introduced symbol is DECLAREd to be SPECIAL.
3610 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3611 * fixed bug: :COUNT argument to sequence functions may be negative
3612 * fixed bug: body of DO-SYMBOLS may contain declarations
3613 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3614 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3615 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3616 symbol macro only once
3617 * fixed printing of call frame when argument list is unavailable
3618 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3619 * compiler no longer signals WARNING on unknown keyword
3622 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3623 * A beta-quality port to the mips architecture running Linux,
3624 based on the old CMUCL backend, has been made. It has been tested
3625 on a big-endian kernel, and works sufficiently well to be able to
3626 rebuild itself; it has not been tested in little-endian mode.
3627 * fixed an inconsistency between gencgc.c and purify.c which made
3628 dumping/loading .core files unreliable
3629 * fixed bug 120a: The compiler now deals correctly with IFs where
3630 the consequent is the same as the alternative, instead of
3631 misderiving the return type. (thanks to Alexey Dejneka)
3632 * fixed bug 113: Logical pathnames are now dumpable (the logical
3633 host is resolved at load-time, throwing an error if it is not
3635 * fixed bug 174: FORMAT's error message is slightly clearer when a
3636 non-printing character is used in a format directive.
3637 * fixed several bugs in compiler checking of type declarations, i.e.
3638 violations of the Python "declarations are assertions" principle
3639 (thanks to Alexey Dejneka)
3640 * fixed several bugs in PCL's error checking (thanks to Gerd
3642 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3644 * fixed bug in compilation of functions as first class values
3645 (thanks to Antonio Martinez-Shotton)
3646 * The compiler's handling TYPE-ERRORs which it can prove will
3647 inevitably happen at runtime has been cleaned up and corrected
3648 in several ways. (thanks to Alexey Dejneka)
3649 * improved argument type checking for various basic arithmetic
3650 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3651 lavished on them in the past that they can be compiled in many
3652 ways in different special cases
3653 * fixed bug 181: compiler checks validity of user supplied type
3655 * cleaned up code flushing in optimization: Function calls which
3656 should signal errors for safety purposes (e.g. which ANSI says
3657 should signal errors when their arguments are of incorrect type)
3658 are no longer optimized away.
3659 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3660 * incremented fasl file version number, because changes in the
3661 implementation of sequence functions like COERCE caused
3662 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3663 in old inline expansions) to become undefined. (Actually these
3664 changes were later undone, so we might very well be binary
3665 compatible with 0.7.7 after all, but leaving the version number
3666 incremented seemed like the simplest and most conservative
3669 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3670 * An alpha-quality port to the parisc architecture running Linux,
3671 based on the old CMUCL backend, has been made. This, even more so
3672 than the other backends, should be considered still a work in
3673 progress; known problems include that the Linux kernel in 64-bit
3674 mode does not propagate the correct sigcontext structure to
3675 userspace, and consequently SBCL on a parisc64 kernel will not
3677 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3678 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3679 suppressed.) Also now that the compiler is looking at declarations
3680 in the environment, it checks optimization declarations as well,
3681 and suppresses inlining when (> DEBUG SPEED).
3682 * More fixes have been made to treatment of floating point exception
3683 treatment and other Unix signals. In particular, floating point
3684 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3685 * The detection and handling of control stack exhaustion (infinite
3686 or very deeply nested recursion) has changed. Stack exhaustion
3687 detection is now done by write-protecting pages at the OS level
3688 and applies at all optimization settings; when found, a
3689 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3690 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3691 be caught using IGNORE-ERRORS.
3692 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3693 correctly when transforming recursive LABELS functions to LETs.
3694 (thanks to Alexey Dejneka)
3695 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3696 that are names of constants or global variables.
3697 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3698 alien routines with docstrings.
3699 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3700 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3702 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3703 (thanks to Eric Marsden)
3704 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3705 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3706 * Bug fix: The SPARC backend can now compile functions involving
3707 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3708 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3709 to a functions expecting a PATHNAME-DESIGNATOR.
3710 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3711 lambda lists. (thanks to Alexey Dejneka)
3712 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3713 functions so that EXPORTing the name of the class doesn't cause
3714 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3715 to Antonio Martinez for reporting this)
3716 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3717 constant-folded without failing an assertion. (thanks to Einar
3718 Floystad Dorum for reporting this)
3719 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3720 types are now dealt with more correctly by the compiler.
3721 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3722 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3723 behaviour analogous to RENAME-FILE. This puts its behaviour more
3724 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3726 * The fasl file version number has changed again. (because of the
3727 bug fix involving the names of PCL MAKE-INSTANCE functions)
3729 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3730 * bug fix: Floating point exceptions are treated much more
3731 consistently on the x86/Linux and PPC/Linux platforms.
3732 * Array initialization with :INITIAL-ELEMENT is now much faster for
3733 cases when the compiler cannot open code the array creation, but
3734 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3735 array accesses have also seen a speed increase.
3736 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3737 specified. (This was at the root of some bad interactions between
3738 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3740 * bug fix: Internal error arguments for undefined functions are now
3741 computed correctly on the PPC/Linux platform.
3742 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3743 Raymond Toy's patch for CMU CL)
3744 * Support for the Solaris 9 operating environment has been included
3745 (thanks to Daniel Merritt)
3746 * A very ugly but hopefully complete draft of the missing FFI chapter
3747 of the manual has been created by reformatting the corresponding
3748 CMU CL manual chapter into (currently very ugly and incoherent)
3749 DocBook and bringing it up to date for SBCL behavior. Thus, the
3750 manual is now essentially complete, at least by my extreme
3751 once-and-only-once standards, whereby it's acceptable to refer to
3752 the doc strings of SB-EXT functions as the primary documentation.
3753 * The fasl file version number has changed again, due to cleanup of
3754 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3755 is no longer a static symbol.)
3757 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3758 * SBCL now builds with OpenMCL (version 0.12) as the
3759 cross-compilation host; also, more progress has been made toward
3760 bootstrapping under CLISP.
3761 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3763 * bug 158 fixed: The compiler can now deal with integer loop
3764 increments different from 1; fixing this turned out also to fix
3766 * bug 169 fixed: no more bogus warnings about using lexical bindings
3767 despite the presence of perfectly good SPECIAL declarations (thanks
3768 to David Lichteblau)
3769 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3770 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3771 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3773 * bug 180 fixed: Method combination specifications no longer ignore
3774 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3775 * bug fix: Structure type predicate functions now check their argument
3776 count as they should.
3777 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3778 correctly. (thanks to Pierre Mai)
3779 * minor incompatible change: The --noprogrammer option is deprecated
3780 in favor of the new --disable-debugger option, which is very similar.
3781 (The major difference is that it takes effect at a slightly different
3782 time at startup, causing handling of errors in --sysinit and
3783 --userinit files will be affected differently.) The
3784 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3785 been added to allow this functionality to be controlled from ordinary
3786 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3787 maintainers, who might want to run non-interactive scripts to
3788 build SBCL cores which will later be used interactively.)
3789 * minor incompatible change: The LOAD function no longer, when given
3790 a wild pathname to load, loads all files matching that pathname.
3791 Instead, an error of type FILE-ERROR is signalled.
3793 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3794 * bug 147 fixed: The compiler preserves its block link/count
3795 invariants more correctly now so that it doesn't crash. (thanks
3797 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3799 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3800 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3801 no-value-for-this-character as NIL (as specified by ANSI).
3802 * HOST-NAMESTRING on physical pathnames now returns a string that is
3803 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3804 (thanks to Christophe Rhodes)
3805 * The Alpha port handles icache flushing more correctly. (thanks to
3807 * More progress has been made toward bootstrapping under CLISP. (thanks
3808 to Christophe Rhodes)
3809 * The fasl file format has changed again, because dynamic loading
3810 on OpenBSD (which has non-ELF object files) motivated some cleanups
3811 in the way that foreign symbols are transformed and passed around.
3812 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3813 is no longer treated as whitespace by the reader, but instead as
3814 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3815 |A
\7fB|, instead of A as it used to.
3817 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3818 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3819 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3820 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3821 this as of 0.7.1.45, but was left out of the previous news section
3822 (thanks to Dan Barlow)
3823 * SBCL now runs on the Solaris operating system on SPARC architectures
3824 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3825 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3826 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3827 * SPARC backend cleanups, allowing builds of cores optimized for V8
3828 and V9 SPARCS, and also emission of code targeted to a particular
3829 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3831 * SBCL is closer to bootstrapping under CLISP, thanks to various
3832 fixes by Christophe Rhodes.
3833 * The fasl file format has changed again, to allow the compiler's
3834 INFO database to support symbol macros.
3835 * The user manual (in doc/) is formatted into HTML more nicely.
3836 (thanks to coreythomas)
3837 * The system is smarter about SUBTYPEP relationships, especially
3838 those involving NOT types (including types such as ATOM which are
3839 represented internally using NOT types). Thus SUBTYPEP is less
3840 likely to return (VALUES NIL NIL) in general, and in particular
3841 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3843 * The fasl file format has changed again, because the internal
3844 representation of types now includes a new slot to support the new
3845 SUBTYPEP-of-NOT-types logic.
3846 * (not a change in the main branch of SBCL, but a related prototype
3847 which can hopefully be merged into the main branch of SBCL in the
3848 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3849 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3850 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3851 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3852 dispatch macro character combinations. (thanks to Alexey Dejneka)
3853 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3854 that superficially look like logical namestrings correctly.
3855 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3857 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3858 default supplied-p) for &optional and &key arguments. (thanks to
3861 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3862 * incompatible change: The compiler is now less aggressive about
3863 tail call optimization, doing it only when (> SPACE DEBUG) or
3864 (> SPEED DEBUG). (This is an incompatible change because there are
3865 programs which relied on the old CMU-CL-style behavior to optimize
3866 away their unbounded recursion which will now die of stack overflow.)
3867 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3868 for non-GENCGC systems has been increased to 20M (since that
3869 seems much closer to the likely performance optimum for modern
3870 systems than the old 4M value was)
3871 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3872 and *DEBUG-PRINT-LEVEL*
3873 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3874 of CMU CL's support for SPARC, and various endianness and other
3875 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3876 * new syntactic sugar for the Unix command line: --load foo.bar is now
3877 an alternate notation for --eval '(load "foo.bar")'.
3879 ** The system now detects stack overflow and handles it gracefully,
3880 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3881 optimization settings. (This is a good thing in general, and
3882 its introduction in this version should be particularly timely
3883 for anyone whose code fails because of suppression of tail
3885 ** The system now hunts for the C variable "environ" in a more
3886 devious way, to avoid segfaults when the C library version differs
3887 between compile time and run time. (thanks to Christophe Rhodes)
3888 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3889 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3890 ** The compiler no longer issues bogus style warnings for undefined
3891 classes in the same source file as the DEFCLASSes which defined
3892 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3894 ** fixes in CONDITION class precedence list for undefined function
3895 errors (thanks to Alexei Dejneka)
3896 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3897 correctly. (thanks to Dan Barlow)
3898 ** portability fixes aiming at bootstrapping under CLISP (thanks
3899 to Dave McDonald and Christophe Rhodes)
3900 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3901 ** fixes in type translation and and type inference (thanks to
3903 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3904 ** various fixes in the new ports (thanks to Dan Barlow)
3905 * several changes related to debugging:
3906 ** suppression of tail recursion, as noted above
3907 ** stack overflow detection, as noted above
3908 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3909 is now the default. (For some time encapsulation has been more
3910 reliable than the breakpoint-based :ENCAPSULATE NIL
3911 implementation, at least on X86 systems; and I just noticed that
3912 encapsulation also seems closer to the spirit of the ANSI
3915 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3917 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3918 up properly again. (There was a packaging bug in 0.7.0 which
3919 left their definitions in SB-SYS::LOAD-FOREIGN and
3920 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3921 vital for most things which interface to C-level interfaces,
3922 like extensions working with sockets or databases or
3923 Perl-compatible regexes or whatever, and the need to fix
3924 this bug is the main reason that 0.7.1 was released so
3926 ** DEFGENERIC is now choosier about the methods it redefines, so that
3927 reLOADing a previously-LOADed file containing DEFGENERICs does
3928 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3929 cycle now works as it should. (thanks to Alexey Dejneka)
3930 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3931 fixed by Christophe Rhodes. (He actually submitted this patch
3932 months ago, and I delayed until after 0.7.0.)
3933 ** Bug 111 (internal compiler confusion about runtime checks on
3934 FUNCTION types) was fixed by Alexey Dejneka.
3935 * Some internal cleanups (getting rid of variables which aren't
3936 needed now that the byte interpreter is gone) caused the fasl
3937 file format number to change again.
3939 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3940 * major incompatible change: The default fasl file extension, i.e. the
3941 default extension for files produced by COMPILE-FILE, has changed
3942 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3944 ** There are many changes in the implementation of the compiler.
3945 SBCL is now essentially a compiler-only implementation of ANSI
3946 Common Lisp. EVAL still "interprets" a few special cases, but
3947 almost all the interesting cases are handled by creating
3948 a LAMBDA expression, calling COMPILE on it, then calling
3949 FUNCALL on the result.
3950 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3951 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3952 Since the code is newer, there might still be some new bugs
3953 (though not as many as before Martin Atzmueller's fixes:-). But
3954 the new code is substantially simpler and clearer, and hopefully
3955 any remaining bugs will be simpler, less fundamental, and more
3956 fixable then the bugs in the old code.
3957 ** The revised compiler is still a little unsteady on its feet.
3959 *** The debugging information it produces (particularly the names
3960 of FUNCTION objects) is sometimes much less useful than what
3961 the old compiler produced.
3962 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3963 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3964 within a MACROLET) has been temporarily weakened.
3965 ** There are new compiler optimizations for various functions:
3966 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3967 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3968 *** the math functions TRUNCATE, FLOOR, and CEILING
3969 *** the function-of-all-trades COERCE
3970 Mostly these should be transparent, but there's one
3971 potentially-annoying problem (bug 117): when the compiler
3972 inline-expands a function and does type analysis on the result,
3973 it can create control paths which have type mismatches, and
3974 when it can't prove that those control paths aren't taken,
3975 it will issue WARNINGs about the type mismatches. This is
3976 a particular problem in practice for the new sequence functions.
3977 It's not clear how this should be fixed, and for now, a
3978 workaround is given in the entry for 117 in the BUGS file.
3979 ** (Because of the interaction between the two previous items --
3980 occasional inlining problems and new inline expansions -- some
3981 of the new sequence function optimizations won't really kick in
3982 completely until debugging information, and then inlining, are
3983 straightened out in some future version.)
3984 * minor incompatible changes:
3985 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3986 DIRECTORY no longer implicitly promotes NIL slots of its
3987 pathname argument to :WILD. In particular, when you ask for the
3988 contents of a directory (which you used to be able to do without
3989 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3990 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3991 ** changes in behavior that ANSI explicitly defines to be
3992 implementation dependent:
3993 *** The new compiler-only implementation still conforms with ANSI,
3994 but acts a little different than before. Besides the obvious
3995 changes in performance tradeoffs (that the cost per form passed
3996 to EVAL has gone up, and the cost per form executed by EVAL
3997 has gone down), the behavior of the system changes a little
3998 because there are no longer any interpreted function objects.
3999 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4000 e.g. doing COMPILE on the output of interactive DEFUN is
4002 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4004 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4005 has changed from (:CL) to NIL.
4006 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4007 e.g. #\Newline and #\Tab, don't have names specified in the
4008 ANSI Common Lisp standard, is now based on their ASCII symbolic
4009 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4010 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4011 are no longer used for output.
4012 ** changes in internal implementation constants:
4013 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4014 4 million. (If your application spends a lot of time GCing and
4015 you have a lot of RAM, you might want to experiment with
4016 increasing it even more.)
4017 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4018 However, almost all old code should still continue to work without
4019 immediate update, as SB-C-CALL is now a (deprecated) nickname
4021 ** Old operator names in the style DEF-FOO are now deprecated in
4022 favor of new corresponding names DEFINE-FOO, for consistency with
4023 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4024 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4025 internal symbols, but a few supported extensions like
4026 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4027 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4028 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4029 etc. as you get deeper into recursive calls to the debugger
4030 command loop, instead of the old "5]", "5]]", "5]]]"
4031 sequence. (I was motivated to do this when squabbles between
4032 ILISP and SBCL left me very deeply nested in the debugger. In the
4033 short term, this change will probably provoke more ILISP/SBCL
4034 squabbles, but hopefully it will be an improvement in the long run.)
4035 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4036 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4037 function, since declaiming return types involving aliens is
4038 (1) annoyingly messy to do by hand and (2) vital to efficient
4039 compilation of code which calls such functions.
4040 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4041 longer reexported by the SB-EXT package. They're solely useful
4042 for alien code, so it seems more logical that you should get
4043 them from the SB-ALIEN package, not in SB-EXT.
4044 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4045 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4046 features. Instead, the code that they used to control is always
4047 built into the system.
4048 * many other bug fixes
4049 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4050 advantage of the new EVAL-WHEN stuff and to clean them up in
4051 general, and they are now more ANSI-compliant in a number of
4052 ways. Martin Atzmueller is responsible for a lot of this.
4053 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4055 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4056 *** correct ERROR type for various file operations
4057 *** some fixes for Lisp streams
4058 *** DEFMETHOD syntax checking
4059 *** changing old weird representation of debug information as
4060 strings (which, among their other deficiencies, don't transform
4061 correctly when you rename packages, and don't change their
4062 print representation when you change things like *PACKAGE*
4063 and *PRINT-LENGTH*) to symbols and lists of symbols
4064 He also made several improvements and fixed several bugs in DESCRIBE.
4065 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4067 *** misbehavior of WRITE-STRING/WRITE-LINE
4068 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4069 and several other LOOP problems as well
4070 *** DIRECTORY when similar filenames are present
4071 *** DEFGENERIC with :METHOD options
4072 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4073 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4074 *** argument ordering in FIND with :TEST option
4075 *** mishandled package designator argument in APROPOS-LIST
4076 *** various problems in the backquote readmacro
4077 *** a bug in APROPOS
4078 *** probably some others that I'm not describing very well here,
4079 since the CVS log documents them by reference to sbcl-devel
4080 messages, and the SourceForge archives aren't working well.:-(
4081 ** Dan Barlow improved the Alpha port (and is making progress on the
4082 PPC port, for those of you who think different).
4083 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4084 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4085 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4086 continues to work on the SPARC port (for those of you in a position
4087 to look down upon our little PC-compatible boxes from a great height).
4088 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4089 and uses that copy, rather than the current dynamic value, when
4090 it's trying to decide whether to truncate output. Thus e.g.
4091 (let ((*print-lines* 50))
4092 (pprint-logical-block (stream nil)
4094 (let ((*print-lines* 8))
4095 (print (aref possiblybigthings i) stream)))))
4096 should now truncate the logical block only at 50 lines, instead of
4097 often truncating it at 8 lines, as it did before.
4098 * The doc/cmucl/ directory, containing old CMU CL documentation
4099 from the time of the fork, is no longer part of the base system.
4100 SourceForge has shut down its anonymous FTP service, and with it
4101 my original plan for distributing the old CMU CL documentation
4102 there. For now, if you need these files you can download an old
4103 SBCL source release and extract them from it.
4104 * The fasl file version number changed again, for dozens of reasons,
4105 some of which are apparent above.
4107 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4108 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4109 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4110 patch, so that DISASSEMBLE output is much nicer.
4111 * The code in the SB-PROFILE package now seems reasonably stable.
4112 I still haven't decided what the final interface should look like
4113 (I'd like PROFILE to interact cleanly with TRACE, since both
4114 facilities use function encapsulation) but if you have a need
4115 for profiling now, you can probably use it successfully with
4116 the current CMU-CL-style interface.
4117 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4118 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4119 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4120 link now returns the dangling link itself, and for similar
4121 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4122 link itself. (In these cases the old code signalled an error and
4123 looped endlessly, respectively.) Thus, DIRECTORY now works even
4124 in the presence of dangling and cyclic symbolic links.
4125 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4126 is now a supported extension again, since the consensus on
4127 sbcl-devel was that it can be useful for ordinary development
4128 work, not just for debugging SBCL itself.
4129 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4130 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4131 that currently-defined functions might be redefined later with
4132 different return types.
4133 * Hash tables can be printed readably, as inspired by CMU CL code
4134 of Eric Marsden and SBCL code of Martin Atzmueller.
4135 * better error handling in CLOS method combination, thanks to
4136 Martin Atzmueller porting Pierre Mai's CMU CL patches
4137 * more overflow fixes for >16Mbyte I/O buffers
4138 * A bug in READ has been fixed, so that now a single Ctrl-D
4139 character suffices to cause end-of-file on character streams.
4140 In particular, now you only need one Ctrl-D at the command
4141 line (not two) to exit SBCL.
4142 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4144 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4145 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4146 does the right thing.
4147 * The implementation of some type tests, especially for CONDITION
4148 types, is now tidier and maybe faster, due to CMU CL code
4149 originally by Douglas Crosher, ported by Martin Atzmueller.
4150 * Some math functions have been fixed, and there are new
4151 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4152 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4153 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4154 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4155 likely to be built into sbcl-0.7.0.)
4156 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4157 CL, ported to SBCL by Martin Atzmueller)
4158 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4159 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4160 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4161 * There's a new slam.sh hack to shorten the edit/compile/debug
4162 cycle for low-level changes to SBCL itself, and a new
4163 :SB-AFTER-XC-CORE target feature to control the generation of
4164 the after-xc.core file needed by slam.sh.
4165 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4166 COMPILE-FILE is no longer supported, so that now every function
4167 gets an entry point, so that block compilation looks a little
4168 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4169 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4170 returns the number of bytes consed since the system started,
4171 rather than the number consed since the first time the function
4172 was called. (The new definition parallels ANSI functions like
4173 CL:GET-INTERNAL-RUN-TIME.)
4174 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4175 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4176 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4177 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4178 * Fasl file version numbers are now independent of the target CPU,
4179 since historically most system changes which required version
4180 number changes have affected all CPUs equally. Similarly,
4181 the byte fasl file version is now equal to the ordinary
4184 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4185 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4186 is no longer recognized. I apologize for this, because it was
4187 listed in SB-EXT as a supported extension, but I found that
4188 its existing behavior was poorly specified, as well as incorrectly
4189 specified, and it looked like too much of a mess to straighten it
4190 out. I have enough on my hands trying to get ANSI stuff to work..
4191 * many patches ported from CMU CL by Martin Atzmueller, with
4192 half a dozen bug fixes in pretty-printing and the debugger, and
4193 half a dozen others elsewhere
4194 * fixed bug 13: Floating point infinities are now supported again.
4195 They might still be a little bit flaky, but thanks to bug reports
4196 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4197 as flaky as they were.
4198 * The --noprogrammer command line option is now supported. (Its
4199 behavior is slightly different in detail from what the old man
4200 page claimed it would do, but it's still appropriate under the
4201 same circumstances that the man page talks about.)
4202 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4203 are now supported, and enabled by default. Thus, the compiler can
4204 handle many floating point and complex operations much less
4205 inefficiently. (Thus e.g. you can implement a complex FFT
4207 * The compiler now detects type mismatches between DECLAIM FTYPE
4208 and DEFUN better, and implements CHECK-TYPE more correctly, and
4209 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4210 thanks to patches from Martin Atzmueller.
4211 * various fixes to make the cross-compiler more portable to
4212 ANSI-conforming-but-different cross-compilation hosts (notably
4213 Lispworks for Windows, following bug reports from Arthur Lemmens)
4214 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4215 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4216 fixed thanks to Pierre Mai's CMU CL patches.
4217 * fixes to keep the system from overflowing internal counters when
4218 it tries to use i/o buffers larger than 16M bytes
4219 * fixed bug 45a: Various internal functions required to support
4220 complex special functions have been merged from CMU CL sources.
4221 (When I was first setting up SBCL, I misunderstood a compile-time
4222 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4223 * improved support for type intersection and union, fixing bug 12
4224 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4225 more obscure bugs as well
4226 * some steps toward byte-compiling non-performance-critical
4227 parts of the system, courtesy of patches from Martin Atzmueller
4228 * Christophe Rhodes has made some debian packages of sbcl at
4229 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4230 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4231 stable, but are nonetheless usable. When he's ready, I'd be happy
4232 to add them to the SourceForge "File Releases" section. (And if
4233 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4234 * new fasl file format version number (because of changes in
4235 internal representation of (OR ..) types to accommodate the new
4236 support for (AND ..) types, among other things)
4238 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4239 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4241 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4243 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4244 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4245 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4246 * DESCRIBE now works on structure objects again.
4247 * Most function call argument type mismatches are now handled as
4248 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4249 know whether the function will be redefined before the call is
4250 executed. (The compiler could flag local calls with full WARNINGs,
4251 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4252 it doesn't keep track of enough information to know whether calls
4253 are local in this sense.)
4254 * Compiler output is now more verbose, with messages truncated
4255 later than before. (There should be some supported way for users
4256 to override the default verbosity, but I haven't decided how to
4257 provide it yet, so this behavior is still controlled by the internal
4258 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4259 src/compiler/ir1util.lisp.)
4260 * Fasl file format version numbers have increased again, because
4261 support for the Gray streams extension changes the layout of the
4262 system's STREAM objects.
4263 * The Gray subclassable streams extension now works, thanks to a
4264 patch from Martin Atzmueller.
4265 * The full LOAD-FOREIGN extension (not just the primitive
4266 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4267 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4268 but like most other programs, it defaults to copying the Unix
4269 environment from the original process instead of starting the
4270 new process in an empty environment.
4271 * Extensions which manipulate the Unix environment now support
4272 an :ENVIRONMENT keyword option which doesn't smash case or
4273 do other bad things. The CMU-CL-style :ENV option is retained
4274 for porting convenience.
4275 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4276 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4278 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4280 * A patch from Martin Atzmueller seems to have solved the SIGINT
4281 problem, and as far as we know, signal-handling now works cleanly.
4282 (If you find any new bugs, please report them!)
4283 * The system no longer defaults Lisp source file names to types
4284 ".l", ".cl", or ".lsp", but only to ".lisp".
4285 * The compiler no longer uses special default file extensions for
4286 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4287 seems to expect a single default extension for all compiled code,
4288 and there's no compelling reason to try to stretch the standard
4289 to allow two different extensions.) Instead, byte-compiled files
4290 default to the same extension as native-compiled files.
4291 * Fasl file format version numbers have increased again, because
4292 a rearrangement of internal implementation packages made some
4293 dumped symbols in old fasl files unreadable in new cores.
4294 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4295 many fewer weird special cases.
4296 * Bug #17 (differing COMPILE-FILE behavior between logical and
4297 physical pathnames) has been fixed, and some related misbehavior too,
4298 thanks to a patch from Martin Atzmueller.
4299 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4300 by Tim Moore, ported to SBCL by Martin Atzmueller.
4301 * Martin Atzmueller fixed several filesystem-related problems,
4302 including bug #36, in part by porting CMU CL patches, which were
4303 written in part by Paul Werkowski.
4304 * More compiler warnings in src/runtime/ are gone, thanks to
4305 more patches from Martin Atzmueller.
4306 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4309 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4311 * DESCRIBE now works on CONDITION objects.
4312 * The debugger now handles errors which arise when trying to print
4313 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4315 * The build system now uses an additional file, customize-target-features.lisp,
4316 to allow local modifications to the target *FEATURES* list. (The point of
4317 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4318 debugging features enabled, without having to worry about propagating it
4319 into everyone's system when I do a "cvs update".) When no
4320 customize-target-features.lisp file exists, the target *FEATURES* list
4321 should be constructed the same way as before.
4322 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4323 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4324 warn about behavior which is undefined under the ANSI spec. Note: This
4325 is specified by ANSI, but it's not very popular with programmers.
4326 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4327 macro in the SBCL sources for an example of a workaround which you
4328 might use to make portable ANSI-standard code which does what you want.
4329 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4330 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4331 when it's used as a non-toplevel form. (This is required in order
4332 to implement the DEFCONSTANT-EQX macro.)
4333 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4334 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4335 funny things, due to bugs in the implementation of EVAL-WHEN
4336 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4337 non-toplevel DEFCONSTANTs are uncommon.)
4338 * The core file version number and fasl file version number have been
4339 incremented, because the old noncompliant DEFCONSTANT behavior involved
4340 calling functions which no longer exist, and because I also took the
4341 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4342 * fixed bug 1 (error handling before read-eval-print loop starts), and
4343 redid debugger restarts and related debugger commands somewhat while
4345 ** The QUIT debugger command is gone, since it did something
4346 rather different than the SB-EXT:QUIT command, and since it never
4347 worked properly outside the main toplevel read/eval/print loop.
4348 Invoking the new TOPLEVEL restart provides the same functionality.
4349 ** The GO debugger command is also gone, since you can just invoke
4350 the CONTINUE restart directly instead.
4351 ** The TOP debugger command is also gone, since it's redundant with the
4352 FRAME 0 command, and since it interfered with abbreviations for the
4354 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4356 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4357 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4358 some porting work by Martin Atzmueller)
4359 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4360 with a boatload of patches which he ported to SBCL. Now that those
4362 ** The system tries to make sure that its low-priority messages
4363 are prefixed by semicolons, to help people who like to use
4364 syntax highlighting in their ILISP buffer. (This patch
4365 was originally due to Raymond Toy.)
4366 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4367 patches originally written by Raymond Toy.
4368 ** The compiler understands coercion between single-value and
4369 multiple-VALUES type expressions better, getting rid of some very
4370 weird behavior, thanks to patches originally by Robert MacLachlan
4371 and Douglas Crosher.
4372 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4373 lambda lists, thanks to a patch originally by Pierre Mai.
4374 ** The system no longer bogusly warns about "abbreviated type
4376 ** The compiler gets less confused by inlining and RETURN-FROM,
4377 thanks to some patches originally by Tim Moore.
4378 ** The system no longer hangs when dumping circular lists to fasl
4379 files, thanks to a patch originally from Douglas Crosher.
4380 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4381 undefined function error.
4382 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4383 in structure slot initforms) for now, documented workaround instead:-|
4384 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4385 * fixed bug 5: added stubs for various Gray stream functions called
4386 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4387 installed, at least appropriate type errors are generated
4388 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4389 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4390 consistently in DEFMETHOD forms.
4391 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4392 it doesn't seem to affect SBCL after all
4393 * The C runtime system now builds with better optimization and many
4394 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4396 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4398 * The system is now under CVS at SourceForge (instead of the
4399 CVS repository on my home machine).
4400 * The new signal handling code has been tweaked to treat register
4401 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4402 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4403 downstream, e.g. in debug-int.lisp, has implicit dependencies
4404 on the unsignedness of integer representation of machine words,
4405 and that caused the system to bomb out with infinite regress
4406 when trying to recover from type errors involving signed values,
4407 e.g. (BUTLAST '(1 2 3) -1).)
4408 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4409 (This was one of the bugs Peter Van Eynde reported back in July.)
4410 * The system now uses code inspired by Colin Walters' O(N)
4411 implementation of MAP (from the cmucl-imp@cons.org mailing
4412 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4413 inline the MAP operation, and there is more than one
4414 sequence argument to the MAP call (so that it can't just
4415 do ETYPECASE once and for all based on the type of the
4416 single sequence argument). (The old non-inline implementation
4417 of the general M-argument sequence-of-length-N case required
4418 O(M*N*N) time when any of the sequence arguments were LISTs.)
4419 * The QUIT :UNIX-CODE keyword argument has been renamed to
4420 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4421 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4423 * Raymond Wiker's patches to port dynamic loading from Linux to
4424 FreeBSD have been added.
4425 * The BUGS file is now more nearly up to date, thanks in large part
4426 to Martin Atzmueller's review of it.
4427 * The debugger now flushes standard output streams before it begins
4428 its output ("debugger invoked" and so forth).
4429 * The core version number and fasl file version number have both
4430 been incremented, because of incompatible changes in the layout
4432 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4433 used to not be called for a saved Lisp image.)
4434 * Martin Atzmueller's version of a patch to fix a compiler crash,
4435 as posted on sbcl-devel 13 September 2000, has been installed.
4436 * Instead of installing Martin Atzmueller's patch for the
4437 compiler transform for SUBSEQ, I deleted the compiler transform,
4438 and transforms for some similar consing operations.
4439 * A bug in signal handling which kept TRACE from working on OpenBSD
4441 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4442 away by constant folding
4443 * The system now defines its address space constants in one place
4444 (in the Lisp sources), and propagates them automatically elsewhere
4445 (through GENESIS and the sbcl.h file). Therefore, patching the
4446 address map is less unnecessarily tedious and error-prone. The
4447 Lisp names of address space constants have also been systematized.
4448 * CVS tags like dollar-Header-dollar have been removed from
4449 the sources, because they have never saved me trouble and
4450 they've been source of trouble working with patches and other
4451 diff-related operations.
4452 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4453 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4455 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4457 * The system has been ported to OpenBSD.
4458 * The system now compiles with a simple "sh make.sh" on the systems
4459 that it's supported on. I.e., now you no longer need to tweak
4460 text in the target-features.lisp-expr and symlinks in src/runtime/
4461 by hand, the make.sh takes care of it for you.
4462 * The system is no longer so grossly inefficient when compiling code
4463 involving vectors implemented as general (not simple) vectors (VECTOR T),
4464 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4465 which dares to use the various sequence functions on non-simple
4466 vectors, takes less of a performance hit.
4467 * There is now a primitive type predicate VECTOR-T-P
4468 to test for the (VECTOR T) type, so that e.g.
4469 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4470 can now be compiled with some semblance of efficiency. (The old code
4471 turned the type declaration into a full call to %TYPEP at runtime!)
4472 * AREF on (VECTOR T) is still not fast, since it's still compiled
4473 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4474 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4475 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4476 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4477 without making full calls to SUBTYPEP at runtime.
4478 (Some analogous efficiency issues for non-simple vectors specialized to
4479 element types other than T, or for non-simple multidimensional arrays,
4480 have not been addressed. They could almost certainly be handled the
4481 same way if anyone is motivated to do so.)
4482 * The changes in array handling break binary compatibility, so
4483 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4484 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4485 instead of (VALUES T T).
4486 * By following the instructions that Dan Barlow posted to sbcl-devel
4487 on 2 July 2000, I was able to enable primitive dynamic object
4488 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4489 functionality is not implemented (since it calls ld to resolve
4490 library references automatically, requiring RUN-PROGRAM for its
4491 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4492 try to resolve library references) is now supported.
4493 * The system now flushes the standard output streams when it terminates,
4494 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4495 them at several other probably-convenient times, e.g. in each pass of
4496 the toplevel read-eval-print loop, and after evaluating a form given
4497 as an "--eval" command-line option. (These changes were motivated by a
4498 discussion of stream flushing issues on cmucl-imp in August 2000.)
4499 * The source transform for TYPEP of array types no longer assumes
4500 that an array whose element type is a not-yet-defined type
4501 is implemented as an array of T, but instead punts, so that the
4502 type will be interpreted at runtime.
4503 * There is now some support for cross-compiling in make.sh: each of
4504 the phases of make.sh has its own script. (This should be transparent
4505 to people doing ordinary, non-cross-compile builds.)
4506 * Since my laptop doesn't have hundreds of megabytes of memory like
4507 my desktop machine, I became more motivated to do some items on
4508 my to-do list in order to reduce the size of the system a little:
4509 ** Arrange for various needed-only-at-cold-init things to be
4510 uninterned after cold init. To support this, those things have
4511 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4512 symbols with such names are now uninterned after cold init).
4513 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4514 fasl files for cold load.
4515 ** Remove the old compiler structure pooling code (which used to
4516 be conditional on the target feature :SB-ALLOC) completely.
4517 ** Redo the representation of some data in cold init to be more compact.
4518 (I also looked into supporting byte compiled code at bootstrap time,
4519 which would probably reduce the size of the system a lot, but that
4520 looked too complicated, so I punted for now.)
4521 * The maximum signal nesting depth in the src/runtime/ support code has
4522 been reduced from 4096 to 256. (I don't know any reason for the very
4523 large old value. If the new smaller value turns out to break something,
4524 I'll probably just bump it back up.)
4525 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4527 * Many, many bugs reported by Peter Van Eynde have been added to
4528 the BUGS list; some have even been fixed.
4529 * While enabling dynamic object file loading, I tried to make the
4530 code easier to understand, renaming various functions and variables
4531 with less ambiguous names, and changing some function calling
4532 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4533 * While trying to figure out how to do the OpenBSD port, I tried to
4534 clean up some of the code in src/runtime/. In particular, I dropped
4535 support for non-POSIX signal handling, added various comments,
4536 tweaked the code to reduce the number of compilation warnings, and
4537 renamed some files to increase consistency.
4538 * To support the new automatic configuration functionality in make.sh,
4539 the source file target-features.lisp-expr has been replaced with the
4540 source file base-target-features.lisp-expr and the machine-generated
4541 file local-target-features.lisp-expr.
4542 * fixed a stupid quoting error in make.sh so that using CMU CL
4543 "lisp -batch" as cross-compilation host works again
4545 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4547 * DESCRIBE no longer tries to call itself recursively to describe
4548 bound/fbound values, so that it no longer fails on symbols which are
4549 bound to themselves (like keywords, T, and NIL).
4550 * DESCRIBE now works on generic functions.
4551 * The printer now prints less-screwed-up representations of closures
4552 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4553 * A private symbol is used instead of the :EMPTY keyword previously
4554 used to mark empty slots in hash tables. Thus
4555 (DEFVAR *HT* (MAKE-HASH-TABLE))
4556 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4557 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4558 now does what ANSI says that it should. (You can still get
4559 similar noncompliant behavior if bang on the hash table
4560 implementation with all the symbols you get back from
4561 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4562 This breaks binary compatibility, since tests for equality to
4563 :EMPTY are wired into things like the macroexpansion of
4564 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4566 * There's now a minimal placeholder implementation for CL:STEP,
4567 as required by ANSI.
4568 * An obscure bug in the interaction of the normal compiler, the byte
4569 compiler, inlining, and structure predicates has been patched
4570 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4571 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4573 * Missing ordinary arguments in a macro call are now detected even
4574 when the macro lambda list contains &KEY or &REST.
4575 * The debugger no longer complains about encountering the top of the
4576 stack when you type "FRAME 0" to explicitly instruct it to go to
4577 the top of the stack. And it now prints the frame you request even
4578 if it's the current frame (instead of saying "You are here.").
4579 * As specified by ANSI, the system now always prints keywords
4580 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4582 * The default initial SIZE of HASH-TABLEs is now smaller.
4583 * Type information from CLOS class dispatch is now propagated
4584 into DEFMETHOD bodies, so that e.g.
4585 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4587 is now basically equivalent to
4588 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4589 (DECLARE (TYPE SINGLE-FLOAT X))
4591 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4592 operation, without having to do run-time type dispatch.
4593 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4594 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4595 * Since I don't seem to be making big file reorganizations very often
4596 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4597 is overflowing my ability to conveniently back them up), I've finally
4598 checked the system into CVS. (The CVS repository is on my home system,
4599 not at SourceForge -- putting it on SourceForge might come later.)
4600 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4601 high-level GC-NOTIFY-FOO functions send their output. (There's
4602 still very little control of where low-level verbose GC functions
4603 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4604 less than it used to -- the GC-NOTIFY-FOO functions are now under
4605 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4606 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4607 in only one place in the source code, and propagates it automatically
4608 everywhere that it's needed. Thus e.g. when I bump the version from
4609 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4610 * The C source files now include boilerplate legalese and documentation
4611 at the head of each file (just as the Lisp source files already did).
4612 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4613 to his page will be replaced with a link to his new CLiki service.
4615 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4617 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4618 * The build process now looks for GNU make under the default name "gmake",
4619 instead of "make" as it used to. If GNU make is not available as "gmake"
4620 on your system, you can change this default behavior by setting the
4621 GNUMAKE environment variable.
4622 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4623 can build without error under CMU CL.
4625 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4627 * There is now a partial SBCL user manual (with some new text and some
4628 text cribbed from the CMU CL manual).
4629 * The beginnings of a profiler have been added (starting with the
4630 CMU CL profiler and simplifying and cleaning up). Eventually the
4631 main interface should be through the TRACE macro, but for now,
4632 it's still accessed through vaguely CMU-CL-style functions and macros
4633 exported from the package SB-PROFILE.
4634 * Some problems left over from porting CMU CL to the new
4635 cross-compilation bootstrap process have been cleaned up:
4636 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4637 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4638 part when getting rid of the compiler *BACKEND* stuff.)
4639 ** The value of *NULL-TYPE* was screwed up, because it was
4640 being initialized before the type system knew the final
4641 definition of the 'NULL type. This screwed up several key
4642 optimizations in the compiler, causing inefficiency in all sorts
4643 of places. (I found it because I wanted to understand why
4644 GET-INTERNAL-RUN-TIME was consing.)
4645 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4646 PROCLAIM FTYPE information. Unfortunately this broke binary
4647 compatibility again, since now the forms output by DEFGENERIC
4648 to refer to functions which didn't exist in 0.6.3.
4649 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4650 can use the new (as of 0.6.3) transform for SOME into MAP into
4652 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4653 values to (INTEGER 0 1000000), so that the time code will no longer
4654 occasionally get blown up by Linux returning 1000000 microseconds
4655 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4656 its output conform to the ANSI spec. (Alas, this makes its output
4657 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4658 * A full call to MAP NIL with a single sequence argument no longer conses.
4659 * fixes to problems pointed out by Martin Atzmueller:
4660 * The manual page no longer talks about multiprocessing as though
4661 it were currently supported.
4662 * The ILISP support patches have been removed from the distribution,
4663 because as of version 5.10.1, ILISP now supports SBCL without us
4664 having to maintain patches.
4665 * added a modified version of Raymond Toy's recent CMU CL patch for
4666 EQUALP comparison of HASH-TABLE
4668 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4670 * The system still can't cross-compile itself with
4671 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4672 entails), but at least it can compile more of itself that way
4673 than it used to be able to, and various buglets which were uncovered
4674 by trying to cross-compile itself that way have now been fixed.
4675 * This release breaks binary compatibility again. This time
4676 at least I've incremented the FASL file format version to 2, so that the
4677 problem can be detected reliably instead of just causing weird errors.
4678 * various new style warnings:
4679 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4680 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4681 ** using the lexical binding of a variable named in the *FOO* style
4682 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4683 as specified by ANSI.
4684 * *RANDOM-STATE* is no longer automatically initialized from
4685 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4686 default behavior of the system is to repeat its behavior every time
4687 it's run. If you'd like to change this behavior, you can always
4688 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4689 old convention there was no comparably easy way to get the system to
4690 repeat its behavior every time it was run.
4691 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4692 FTYPE declarations has been removed, in favor of their ANSI
4693 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4694 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4695 the types of their sequence arguments can be determined at compile time.
4696 This is done through a new open code expansion for MAP which eliminates
4697 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4698 argument types can be determined at compile time.
4699 * The optimizer now transforms COERCE into an identity operation when it
4700 can prove that the coerced object is already of the correct type. (This
4701 can be a win for machine generated code, including the output of other
4702 optimization transforms, such as the MAP transform above.)
4703 * Credit information has been moved from source file headers into CREDITS.
4704 * Source file headers have been made more standard.
4705 * The CASE macro now compiles without complaining even when it has
4708 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4710 * (Note that the way that the PCL macroexpansions were rewritten
4711 to accommodate the change in DEFGENERIC below breaks binary
4712 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4713 not run under sbcl-0.6.2. Once we get out of alpha releases,
4714 i.e. hit release 1.0.0, we'll probably try to maintain binary
4715 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4716 and sbcl-1.4.4. Until then, however, it might be fairly common
4717 for maintenance releases to break binary compatibility.)
4718 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4720 * The reporting of unhandled signals has been changed to print some
4721 explanatory text as well as the report form. (Previously only
4722 the report form was printed.)
4723 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4724 it defines, so that the compiler no longer issues undefined function
4725 warnings for compiled-but-not-yet-loaded generic functions.
4726 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4727 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4728 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4729 section of the ANSI spec are supported.
4730 * The "" nickname for the "KEYWORD" package has been removed.
4731 The reader still handles symbol tokens which begin with a package marker
4732 as keywords, but it doesn't expose its mechanism for doing so in the
4733 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4734 * The system now issues STYLE-WARNINGs for contradictory TYPE
4735 proclamations. (Warnings for contradictory FTYPE proclamations would
4736 be nice too, but those can't be done usefully unless the type system
4737 is made smarter about FUNCTION types.)
4738 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4739 systematized, so that "*target-*.lisp is supposed to exist only on the
4740 target and imply that there's a related file which exists on the
4741 host, and *host-*.lisp is supposed to exist only on the host and imply
4742 that there's a related file which exists on the target. This involves a
4743 lot of renaming. Hopefully the acute confusion caused by the renaming
4744 will be justified by the reduction in chronic confusion..
4745 ** runtime-type.lisp -> early-target-type.lisp
4746 ** target-type.lisp -> late-target-type.lisp
4747 ** early-host-format.lisp -> early-format.lisp
4748 ** late-host-format.lisp -> late-format.lisp
4749 ** host-error.lisp -> misc-error.lisp
4750 ** early-error.lisp -> early-target-error.lisp
4751 ** late-error.lisp -> late-target-error.lisp
4752 ** host-defboot.lisp -> early-defboot.lisp
4753 ** code/misc.lisp -> code/target-misc.lisp
4754 ** code/host-misc.lisp -> code/misc.lisp
4755 ** code/numbers.lisp -> code/target-numbers.lisp
4756 ** code/early-numbers.lisp -> numbers.lisp
4757 ** early-host-type.lisp -> early-type.lisp
4758 ** late-host-type.lisp -> late-type.lisp
4759 ** host-typep.lisp -> typep.lisp
4760 ** load.lisp -> target-load.lisp
4761 ** host-load.lisp -> load.lisp
4762 ** host-disassem.lisp -> disassem.lisp
4763 ** host-insts.lisp -> insts.lisp
4764 ** byte-comp.lisp -> target-byte-comp.lisp
4765 ** host-byte-comp.lisp -> byte-comp.lisp
4766 ** host-signal.lisp -> signal.lisp
4767 ** host-defstruct.lisp -> defstruct.lisp
4768 ** late-target-type.lisp -> deftypes-for-target.lisp
4769 Furthermore, several other previously target-only files foo.lisp (e.g.
4770 hash-table.lisp and random.lisp) have been split into a target-and-host
4771 foo.lisp file and a target-only target-foo.lisp file, with their key type
4772 definitions in the target-and-host part, so that the cross-compiler will
4773 know more about target types.
4774 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4775 gone away. In their place are various *BACKEND-FOO* variables
4776 corresponding to the slots of the old structure.
4777 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4778 into the target SBCL has been fixed.
4779 * The chill.lisp system for loading cold code into a running SBCL
4781 * Support for the CMU CL "scavenger hook" extension has been removed.
4782 (It was undocumented and unused in the CMU CL sources that SBCL was
4783 derived from, and stale in sbcl-0.6.1.)
4784 * Various errors in the cross-compiler type system were detected
4785 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4786 (enabling various consistency checks). Many of them were fixed,
4787 but some hard problems remain, so the compiler is back to
4788 running without *TYPE-SYSTEM-INITIALIZED* for now.
4789 * As part of the cross-compiler type system cleanup, I implemented
4790 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4791 * I have started adding UNCROSS calls throughout the type system
4792 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4793 on cross-compiler input files will be able to go away, and various
4795 * CONSTANTP now returns true for quoted forms (as explicitly required
4798 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4800 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4801 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4802 (MAKE-LIST -1). In the longer term, it ought to become true
4803 that declarations are assertions even at SAFETY 1. For now, it's not
4804 quite true even at SAFETY 3, but it's at least more nearly true..
4805 (Note that this change seems to increases the size of the system by
4806 O(5%) and to decrease the speed of the compiler by 20% or more.)
4807 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4808 for the problem of printing dozens of lines of distracting information
4809 about low-level system machinery as part of the top stack frame
4810 on entry to the debugger when an undefined function was called.
4811 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4812 is not reset to COMMON-LISP-USER.
4813 * Compilation of stuff related to dyncount.lisp has been made conditional
4814 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4815 smaller. The various dyncount-related symbols have been moved into
4816 a new "SB-DYNCOUNT" package.
4817 * tty-inspect.lisp has been renamed to inspect.lisp.
4818 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4819 feature has gone away. (When we eventually port to other flavors of
4820 libc and/or Unix, we'll try to make the differences between flavors
4821 invisible at the user level.)
4822 * Various other *FEATURES* tags, and/or their associated conditionals,
4823 have been removed if obsolescent, or given better documentation, or
4824 sometimes given more-mnemonic names.
4826 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4828 * tidied up "make.sh" script
4829 * tidied up system directory structure
4830 * better "clean.sh" behavior
4831 * added doc/FOR-CMUCL-DEVELOPERS
4832 * many many small tweaks to output format, e.g. removing possibly-confusing
4833 trailing #\. character in DESCRIBE-INSTANCE
4834 * (EQUALP #\A 'A) no longer signals an error.
4835 * new hashing code, including EQUALP hashing
4836 * tidied up Lisp initialization and toplevel
4837 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4838 * command line argument processing
4839 * added POSIX-GETENV function to deal with Unix-ish environment variables
4840 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4841 terminating SBCL on EOF
4842 * non-verbose GC by default
4843 * There is no more "sbcl" shell script; the sbcl file is now the C
4844 runtime executable (just like CMU CL).
4845 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4847 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4848 symbol and package information as Lisp native symbol and package objects
4849 instead of strings naming symbols and strings naming packages. This way,
4850 whenever packages are renamed (as in warm init), debug information is
4851 transformed along with everything else.
4852 * tweaked the optimization policy declarations which control the building
4853 of SBCL itself. Now, among other things, the system no longer saves
4854 source location debugging information. (This helps two problems at once
4855 by reducing SBCL size and by keeping SBCL from trying to look for its
4856 sources -- which may not exist -- when reporting errors.)
4857 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4858 debugging and testing purposes
4859 * cleaned up printing, making the printer call PRINT-OBJECT for
4860 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4861 methods, giving nearly-ANSI behavior
4862 * converted almost all special variables to use *FOO* naming convention
4863 * deleted PARSE-TIME functionality, since it can be done portably
4864 * moved some files out of cold init into warm init
4865 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4867 * regularized formatting of source files
4868 * added an install.sh script
4869 * fixed ridiculous memory usage of cross-compiler by making
4870 compiler/alloc.lisp not try to do pooling unless it can hook
4871 itself into the GC of the cross-compilation host. Now the system
4872 builds nicely on my old laptop.
4873 * added :SB-ALLOC in target-features.lisp-expr
4874 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4875 was not implemented)
4876 * re-did condition handling and note reporting in the compiler. Notes
4877 are no longer handled by signalling conditions. Style warnings
4878 and warnings are handled more correctly and reported in such a way
4879 that it's easy to find one or the other in your output (so that you
4880 can e.g. figure out which of many problems caused COMPILE-FILE to
4882 * changed the severity of several compiler warnings from full WARNING
4883 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4884 compiler note reporting so that it doesn't use the condition system
4885 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4886 COMPILE-FILE command)
4887 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4888 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4889 no longer supported, since their implementation was deeply intertwingled
4890 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4891 * removed bogus "support" for compiler macros named (SETF FOO), and
4892 removed the compiler macro for SETF INFO (but only after making a fool
4893 of myself on the cmucl-imp mailing list by posting a bogus patch for
4894 DEFINE-COMPILER-MACRO..)
4895 * Compiled files containing forms which have side effects on the Lisp
4896 reader (such as DEFPACKAGE forms) are now handled more correctly.
4897 (Compiler queuing of top level lambdas has been suppressed by setting
4898 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4899 * deleted various currently-unused source files, e.g. gengc.lisp. They
4900 may be added back at some point e.g. when porting to other architectures,
4901 but until they are it's distracting to distribute them and to try to
4903 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4904 there were so many of them they're just distractions, and UNCROSS is
4905 known to be able to handle the current sources
4906 * moved PROFILE functionality into TRACE, so that it will be clear
4907 how the wrapping and unwrapping of functions when you profile them
4908 interacts with the wrapping and unwrapping of functions when you
4909 trace them. (Actually, the functionality isn't there yet, but at least
4910 the interface specification is there. Hopefully, the functionality will
4911 arrive with some future maintenance release.)
4912 * removed host-oops.lisp
4913 * changed signature of QUIT function to allow UNIX-CODE argument
4914 * fixed READ-SEQUENCE bug
4915 * tweaked verbose GC output so that it looks more like the progress
4916 output that ANSI specifies for functions like LOAD
4917 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4918 * added <http://sbcl.sourceforge.com> to the banner information printed by