1 ;;;; -*- coding: utf-8; -*-
2 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying
3 data vector of an multidimensional SIMPLE-ARRAY.
4 * new feature: the system now signals a continuable error if standard
5 readtable modification is attempted.
6 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
7 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
9 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
11 * bug fix: lexical type declarations are now correctly reported by
12 SB-CLTL2. (reported by Larry D'Anna)
13 * bug fix: STRING-TO-OCTETS did not handle :START properly when
14 using UTF-8 as external format. (thanks to Luis Oliveira)
15 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
16 are signalled correctly. (thanks to Stas Boukarev)
17 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
18 designator. (thanks to Tobias Rittweiler)
19 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
20 designator, and returns T instead of the function. (thanks to
22 * bug fix: direct superclasses of STANDARD-CLASS and
23 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
24 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
25 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
26 when no class with the named slot yet exists no longer causes a
27 compile-time style-warning.
28 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
29 in safe code. (reported by Didier Verna)
30 * bug fix: #430; nested structure constructors can stack allocate.
31 * bug fix: on some 64-bit platforms dynamic space size was truncated
32 to #xffff0000 bytes. (reported by Benjamin Lambert)
34 changes in sbcl-1.0.23 relative to 1.0.22:
35 * enhancement: when disassembling method functions, disassembly
36 for the associated fast function is also produced.
37 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
39 * optimization: printing with *PRINT-PRETTY* true is now more
40 efficient as long as the object being printed doesn't require
41 special handling by the pretty printer.
42 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
43 now interact correctly with type declarations.
44 * partial bug fix: PCL detects infinite recursion during wrapper
45 validation. (thanks to Attila Lendvai)
46 * bug fix: #426; nested function calls are inlined properly.
47 Previously if FOO was an inline function, in calls of the form
48 (FOO (FOO ...)) the outer call was not inlined.
49 * bug fix: long long arguments passed in registers to alien
50 functions on PowerPC Linux and NetBSD are now handled correctly
51 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
53 changes in sbcl-1.0.22 relative to 1.0.21:
54 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
55 for the shared object in the current directory, but passes the native
56 namestring of the designated pathname to the operation system's shared
57 object loading function as-it.
58 * minor incompatible change: --disable-debugger toplevel option now takes
59 effect before processing of initialization files and --eval or --load
61 * new feature: new commandline argument: --script, which supports
62 shebang lines. See documentation for details. (based on work by
64 * new feature: SAVE-LISP-AND-DIE can save current values of
65 --dynamic-space-size and --control-stack-size in the executable core,
66 causing it to skip normal runtime option processing. See documentation
67 for details. (thanks to Zach Beane)
68 * enhancement: inoccous calls to EVAL or generic functions dispatching
69 on subclasses of eg. STREAM no longer cause compiler notes to appear.
70 * enhancement: the system no longer resignals errors from --load and
71 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
72 associated with the original error to be lost. (thanks to Ariel
74 * enhancement: :DONT-SAVE keyword argument has been added to
75 LOAD-SHARED-OBJECT for controlling interaction with
76 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
77 the effects of an earlier LOAD-SHARED-OBJECT call.
78 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
79 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
80 provided. (reported by Cedric St-Jean)
81 * bug fix: circularity handling in the reader did not treat raw
82 structure slots correctly. (reported by Cedric St-Jean)
83 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
84 file descriptors when there were none.
85 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
86 was broken. (reporteed by Willem Broekema)
87 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
88 pathnames without a directory.
89 * bug fix: COMPILE-FILE did not warn about undefined variable
90 references at toplevel, and LOAD of the resulting fasl did
92 * bug fix: functions with non-required arguments used to end up with
93 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
94 * bug fix: redefining a function with non-required arguments didn't
95 update the system's knowledge about its call signature properly.
96 * bug fix: fixed #431; incompatible alien record type redefinitions
97 are detected and handled. (reported by Neil Haven)
98 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
99 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
101 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
102 after alien stack frames.
103 * bug fix: strings passed to mk{s,d}temp lacked null termination
105 changes in sbcl-1.0.21 relative to 1.0.20:
106 * new feature: the compiler is able to track the effective type of a
107 generic function across method addition and removal.
108 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
109 appropriately typed structure slots without locking.
110 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
111 information like those gathered by TIME using a programming-friendly
113 * new feature: TIME reports time taken even if the form performs a
114 non-local transfer of control.
115 * enhancement: reduced conservativism on GENCGC platforms: on
116 average 45% less pages pinned (measured from SBCL self build).
117 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
118 mutate constant symbols or violate declaimed type of the symbol.
119 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
120 sleeping on the semaphore in heavily contested semaphores.
121 * bug fix: semaphores and condition variables were not interrupt
123 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
124 owned by other threads anymore.
125 * bug fix: FIND on lists called KEY outside the specified
126 subsequence. (reported by budden)
127 * bug fix: LOG doesn't use single-float intermediate results when
128 given mixed integer and double-float arguments, leading to better
129 precision. (reported by Bob Felts)
130 * bug fix: LOG with base zero returned values of inconsistent type.
132 changes in sbcl-1.0.20 relative to 1.0.19:
133 * minor incompatible change: OPTIMIZE qualities
134 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
135 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
136 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
137 * documentation: some slot access efficiency guidelines have been
138 added to the user manual.
139 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
140 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
141 as ASSOC and MEMEBER.
142 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
143 to more efficient EQ-comparison versions more often.
144 * optimization: enhanced derivation of DOLIST iteration variable type
146 * optimization: constant folding of simple (LIST ...) forms as DOLIST
148 * optimization: runtime lookup of function definitions can be
149 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
150 * optimization: compiler is able to derive the return type of
151 (AREF (THE STRING X) Y) as being CHARACTER.
152 * optimization: CLRHASH on empty hash-tables no longer does pointless
153 work. (thanks to Alec Berryman)
154 * optimization: REPLACE deftransforms don't punt when :START1 or
156 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
157 no longer emits a code deletion note. (reported by Andrew
159 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
160 functions with an odd number of &OPTIONAL arguments, a &REST
161 argument, and one or more &KEY arguments at the call site.
162 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
163 arguments appeared at call sites as well.
164 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
165 READ-LINE &co can no longer read from them afterwards. (reported
167 * bug fix: fixed #427: unused local aliens no longer cause compiler
168 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
170 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
171 alien-stack leakage. (reported by Andy Hefner)
172 * bug fix: PROGV signals an error when an attempt to violate declared
173 type of a variable or bind a constant is made.
174 * bug fix: SET signals an error when an attempt to violate declared
175 type of a variable is made.
176 * bug fix: restart computation during the execution of a restart
177 test function no longer causes infinite recursion. (reported by
179 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
180 signals an error. (thanks to Pierre Mai)
181 * bug fix: EXPORT left symbol unexported in conflict situations.
182 (thanks to Michael Weber)
183 * bug fix: correctly handle name conflicts involving CL:NIL.
184 (thanks to Michael Weber)
185 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
186 conflicts arising from USEing package with conflicting symbols
187 correctly. (thanks to Michael Weber)
189 changes in sbcl-1.0.19 relative to 1.0.18:
190 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
191 warnings that go otherwise unhandled will be muffled if they are
192 of the type that's the value of this variable.
193 * optimization: stack allocation is slightly more efficient on x86
195 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
196 where a raw slot always is initialized using the initform whose
197 type is not know sufficiently well a compile-time are now compiled
198 correctly. (reported by John Morrison)
199 * bug fix: compiler no longer makes erronous assumptions in the
200 presense of non-foldable SATISFIES types.
201 * bug fix: stack analysis missed cleanups of dynamic-extent
202 arguments in non-let-converted calls to local functions.
203 * improvements to the Windows port:
204 ** adjusted address spaces for building on both Win32 and
205 Win64. (thanks for John Connors)
206 * fixed some bugs revealed by Paul Dietz' test suite:
207 ** interval arithmetic during type derivation used inexact integer
208 to single-float coercions.
209 ** arithmetic operations involving large integers and single
210 floats give the same results in compiled and interpreted code.
211 ** deriving the result type of COERCE no longer signals an error
212 if the derived type of the second argument is a MEMBER type
213 containing invalid type specifiers.
214 ** ADJOIN with constant NIL as second argument works correctly.
215 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
217 changes in sbcl-1.0.18 relative to 1.0.17:
218 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
219 profiles only the current thread.
220 * minor incompatible change: changes to SYMBOL-VALUE of constants
221 defined with DEFCONSTANT now signal an error.
222 * enhancement: SB-SPROF now has support for wallclock profiling,
223 and is also able to profile specific threads. REPORT output
224 has also additional sorting options.
225 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
227 * optimization: structure allocation has been improved
228 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
229 ** out of line constructors are ~10% faster.
230 ** inline constructors are ~15% faster.
231 ** inline constructors are capable of dynamic extent allocation
232 (generally on x86 and x86-64, in some cases on other platforms
234 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
236 * optimization: file compiler is now able to coalesce non-circular
237 lists, non-base strings, and bit-vectors. Additionally, constants
238 are never referenced through SYMBOL-VALUE at runtime.
239 * optimization: code defining methods on PRINT-OBJECT (and other
240 generic functions in the COMMON-LISP package) now loads faster.
241 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
243 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
244 fasl is now deleted. (reported by Attila Lendvai)
245 * bug fix: READ-LINE always returned NIL for the last line in files.
246 (reported by Yoshinori Tahara)
247 * bug fix: more accurate disassembly annotations of foreign function
248 calls. (thanks to Andy Hefner)
249 * bug fix: trimming non-simple strings and non-string string
250 designators when the there is nothing to trim works properly.
251 (thanks to James Knight)
252 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
253 (thanks to Travis Cross)
254 * fixed some bugs revealed by Paul Dietz' test suite:
255 ** NIL is a valid function name (regression at 1.0.13.38)
256 ** FILL on lists was missing its return value (regression at 1.0.12.27)
257 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
258 fill pointers properly (regression at 1.0.12.23)
259 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
260 displacement indices properly (regression at 1.0.12.23)
262 changes in sbcl-1.0.17 relative to 1.0.16:
263 * temporary regression: user code can no longer allocate closure
264 variable storage on stack, due to bug 419 without explicitly
265 requesting it. Please consult sbcl-devel for advice if you need to
266 use this feature in the meanwhile.
267 * new feature: runtime argument --control-stack-size can be used to
268 adjust thread default control stack size.
269 * enhancement: improved TIME output
270 ** all times are reported using the measured accuracy (milliseconds
271 for real and GC times, microseconds for everything else.)
272 ** processor cycle counts on x86 and x86-64.
273 ** interpreted forms are counted for both evaluator modes.
274 ** number of lambdas converted by the compiler is reported.
275 ** CPU percentage report (computed from real and total run time.)
276 ** more comprehensive run time reporting, using a condenced format
277 ** interperted form, lambda, and page fault counts are omitted
279 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
281 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
282 * optimization: two argument forms of LAST are upto ~10% faster
283 in normal SPEED policies.
284 * optimization: NCONC no longer needs to heap cons its &REST list
285 in normal SPEED policies.
286 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
288 * bug fix: UNION and NUNION work with :TEST-NOT once more,
289 regression since 1.0.9.1. (thanks to Eric Marsden)
290 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
291 since 1.0.15.36. (thanks to Paul Khuong)
292 * bug fix: LAST when always returned the whole list when given a bignum
293 as the second argument.
294 * bug fix: dynamic extent allocation of nested lists and vectors
295 could leak to otherwise accessible parts.
296 * bug fix: invalid optimization of heap-allocated alien variable
298 * bug fix: fasl header checking is less vulnerable to different
299 platform word lengths.
300 * bug fix: more correct assembler syntax for GNU binutils
301 2.18.50.0.4 support. (thanks to Marijn Schouten)
302 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
304 * bug fix: the fopcompiler can handle LOCALLY forms (with no
305 declarations) successfully. (reported by Attila Lendvai)
307 changes in sbcl-1.0.16 relative to 1.0.15:
308 * minor incompatible change: revert the changes to sb-posix's error
309 signaling added in 1.0.14.
310 * minor incompatible change: change PROBE-FILE back to returning
311 NIL whenever we can't get a truename, as was the case before 1.0.14.
312 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
313 inherits from ERROR instead of just CONDITION.
314 * new feature: SB-INTROSPECT can provide source locations for instances
315 as well. (thanks to Tobias Rittweiler)
316 * optimization: binding special variables now generates smaller code
317 on threaded platforms.
318 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
319 and cases where no :TEST is given but the compiler can infer that
320 the element to search is of type (OR FIXNUM (NOT NUMBER)).
321 * optimization: better LOGNOT on fixnums.
322 * optimization: modular arithmetic for a particular requested width
323 is implemented using a tagged representation unless a better
324 representation is available.
325 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
326 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
327 for wellformedness and returns a specialized vector. (reported by
328 Francois-Rene Rideau)
329 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
330 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
331 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
332 unscheduling timer at the same time as another timer fires.
333 * bug fix: don't reschedule timers for dead threads.
334 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
335 * bug fix: copying output from RUN-PROGRAM to a stream signalled
336 bogus errors if select() was interrupted.
337 * enhancement: add support for fcntl's struct flock to SB-POSIX.
339 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
340 * enhancement: cleaner backtraces for interactive interrupts, as
341 well as other cases where the interesting frames used to be
342 obscured by interrupt handling frames.
343 * enhancement: untracing a whole package using (UNTRACE "FOO") is
344 now supported, and tracing a whole package using (TRACE "FOO") now
345 traces SETF-functions as well.
346 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
347 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
348 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
349 * unreadably printed representation of hash-tables now includes
351 * bug fix: partially fixed #188: type propagation from assignments
352 is now more efficient.
353 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
354 'DOUBLE-FLOAT) are not flushable.
355 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
356 full address of the object, and none of the tag bits.
357 * bug fix: readably printing hash-tables now respects other printer
358 control variables. (reported by Cedric St-Jean)
359 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
360 keyword with MAKE-HASH-TABLE.
361 * bug fix: export SB-POSIX:MKSTEMP.
362 * bug fix: SORT was not interrupt safe.
363 * bug fix: XREF accounts for the last node of each basic-block as
365 * bug fix: MAKE-INSTANCE optimizations interacted badly with
366 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
367 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
368 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
369 create obsolete instances in the case of redefinition or
370 obsoletion of a superclass. (thanks to Andy Hefner)
371 * bug fix: Support for the Alpha architecture has been revived; it had
372 suffered somewhat from lack of maintenance since sbcl-1.0.
373 * improvements to the Windows port:
374 ** The system detects the codepage to use at startup, instead of
375 using the value from the saved core. (thanks to Kei Suzuki)
377 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
378 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
379 (see documentation for details.)
380 * revived support for OpenBSD (contributed by Josh Elsasser)
381 * partially fixed bug #108: ROOM no longer suffers from occasional
382 (AVER (SAP= CURRENT END)) failures.
383 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
384 bodies no longer cause a WARNING to be signalled. (reported by
386 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
387 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
388 the bug in TRUNCATE.) (reported by Michael Weber)
389 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
390 no samples. (reported by Andy Hefner)
391 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
392 no longer appear as (NIL ...) frames in backtraces.
393 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
394 is now actually exported from SB-EXT as documented. (reported by
396 * bug fix: sb-aclrepl now correctly understands how to inspect
397 single-floats on 64-bit platforms where single-floats are not boxed.
398 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
399 yet been finalized. (reported by Levente Meszaros)
400 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
401 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
402 SBCL-specific optimize qualities.
404 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
405 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
406 an executable in the search path, and does so in the child
407 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
408 been removed; it can be found in the CVS history, for somebody who
409 needs that search behavior (see the manual).
410 * minor incompatible change: compiler policy re. weakening type
411 checks has changed: now type checks are weakened only if SAFETY < 2
413 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
414 unparsing of directory pathnames as files. Analogously,
415 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
416 filename to parse into a directory pathname.
417 * enhancement: implicit generic function creation now signals a
418 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
419 users can bind handlers for and muffle around calls to LOAD.
420 * enhancement: RUN-PROGRAM allows unicode arguments and environments
421 to be used (using the default stream external format), and allows
422 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
423 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
424 strings and vectors whose element-type or simplicity is not fully
425 known at compile-time.
426 * optimization: STRING-TRIM and related functions no longer allocate
427 a new string when no trimming needs to be performed. These functions
428 are also faster than before when the input string has been declared
430 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
431 * optimization: READ-LINE is significantly faster for files containing
433 * optimization: non-open coded uses of character comparison operators
434 (e.g. char=) no longer cons when called with more than one parameter
435 on platforms supporting dynamic-extent allocation.
436 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
437 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
438 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
440 * bug fix: some sequence functions elided bounds checking when
442 * bug fix: too liberal weakening of union-type checks when SPEED >
444 * bug fix: more bogus fixnum declarations in ROOM implementation
447 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
448 * new feature: MAKE-HASH-TABLE now experimentally accepts a
449 :SYNCHRONIZED argument, which makes the hash-table safe for
450 concurrent accesses (but not iteration.) See also:
451 SB-EXT:WITH-LOCKED-HASH-TABLE, and
452 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
453 * optimization: CONCATENATE on strings is an order of magnitude faster
454 in code compiled with (> SPEED SPACE).
455 * optimization: SUBSEQ is ~50% faster on lists.
456 * bug fix: bug 417 fixed -- source location reporting is now more robust.
457 * bug fix: SUBSEQ on a list will now correctly signal an error if if
458 END is smaller then START.
459 * bug fix: SB-PROFILE will no longer report extra consing for nested
460 calls to profiled functions.
461 * bug fix: ROOM implementation had bogus fixnum declarations which
462 could cause type-errors when calling ROOM on large images.
463 * bug fix: if file compilation is aborted, the partial fasl is now
464 deleted, and COMPILE-FILE returns NIL as the primary value.
465 * bug fix: number of thread safety issues relating to SBCL's internal
466 hash-table usage have been fixed.
467 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
468 be returned from its body when the values were being returned
469 using unknown-values return convection and the W-P-O was wrapped
470 inside an UNWIND-PROTECT.
471 * bug fix: sb-posix should now compile again under Windows, enabling
474 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
475 * incompatible change: hash-table accessor functions are no longer
476 automatically protected by locks. Concurrent accesses on the same hash-table
477 from multiple threads can give inconsistent results or even corrupt the
478 hash-table completely. Multi-threaded applications should do their own
479 locking at the correct granularity. In the current implementation it is
480 still safe to have multiple readers access the same table, but it's not
481 guaranteed that this property will be maintained in future releases.
482 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
483 and will signal an error at runtime.
484 * enhancement: SB-THREAD package now exports a semaphore interface.
485 * enhancement: CONS can now stack-allocate on x86 and
486 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
488 * enhancement: nested lists can now be stack allocated on
489 platforms providing stack allocation support.
490 * enhancement: dynamic-extent support has been extended to support
491 cases where there are multiple possible sources for the stack
493 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
494 if the mutex is uncontested on Linux.
495 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
496 as specified by the CLHS. (thanks to Tobias Rittweiler)
497 * bug fix: NaN comparison now works on x86-64.
498 * bug fix: CLOSE :ABORT T on a stream with pending output now
500 * bug fix: instances of non-standard metaclasses using standard
501 instance structure protocol sometimes missed the slot type checks
503 * bug fix: known functions can be inlined in high-debug code.
505 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
506 * minor incompatible change: the MSI installer on Windows no longer
507 associates .lisp and .fasl files with the installed SBCL.
508 * minor incompatible change: :UNIX is no longer present in *FEATURES*
509 on Windows. (thanks to Luis Oliviera)
510 * new feature: SB-CLTL2 contrib module now implements
511 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
512 * optimization: scavenging weak pointers is now more efficient,
513 requiring O(1) instead of O(N) per weak pointer to identify
514 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
515 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
516 method bodies using constant slot-names when the first argument is
517 a specializer parameter for the method.
518 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
519 names, when the class of the instance is a direct instance
520 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
521 as slow as the constant slot-name case.)
522 * optimization: member type construction is now O(N) instead
524 * optimization: UNION and NUNION are now O(N+M) for large
525 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
527 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
528 now more readable in environments like Slime which display it.
529 (thanks to Tobias C. Rittweiler)
530 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
531 was able to infer the correct argument type for the object on which
532 the CAS operation was being performed.
533 * bug fix: copy propagation interfered with parallel assignment
534 semantics in local calls. (reported by Paul Khuong)
535 * bug fix: the signed modular fixnum shift compiled to wrong code on
536 x86 and x86-64. (spotted by a slight modification to some of
539 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
540 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
541 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
542 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
544 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
545 and generic function now print the object identity for anonymous
546 instances. (thanks to Attila Lendvai)
547 * enhancement: as an extension to MOP, SBCL now supports SETF of
548 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
549 (thanks to Attila Lendvai)
550 * enhancement: sb-cover has an alternate annotation mode which puts
551 the form annotations at the car of the form, instead of annotating
552 it completely. The benefit of this mode is that it shows better
553 which forms were instrumented by the compiler.
554 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
555 by printer control variables. (reported by Dan Corkill)
556 * bug fix: system leaked memory when delayed output was performed by
557 the OS in smaller chunks then expected. (thanks to David Smith)
558 * bug fix: system leaked memory when file streams were not closed
560 * bug fix: large objects written to slow streams that were modified
561 after the write could end up with the modified state written to
562 the underlying file descriptor.
563 * bug fix: multiple threads operating in parallel on the same stream
564 could cause buffer-overflows.
565 * bug fix: source location information is stored correctly
566 (broken since 1.0.6). This bug would generally show up as the
567 Slime debugger highlighting the wrong form when the sldb-show-source
569 * bug fix: Branch forms are again annotated as branches in the sb-cover
571 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
572 on x86-64. (reported by Gregory Vanuxem)
573 * bug fix: EQUALP could return wrong results for structures with raw
574 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
575 word). (reported by Vjacheslav Fyodorov)
576 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
579 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
580 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
581 atomic compare-and-swap operations on threaded platforms.
582 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
583 allows assigning a global minimum value to optimization qualities
584 (overriding proclamations and declarations).
585 * enhancement: closed over variables can be stack-allocated on x86
587 * performance bug fix: GETHASH and (SETF GETHASH) are once again
589 * optimization: slot definition lookup is now O(1). This speeds up
590 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
591 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
592 * optimization: ASSOC and MEMBER can now be open-coded for all
593 combinations of keyword arguments when second argument is constant
594 and SPEED >= SPACE. In other cases a specialized version is
596 * bug fix: using obsoleted structure instances with TYPEP and
597 generic functions now signals a sensible error.
598 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
599 (reported by Kristoffer Kvello)
600 * bug fix: backtrace construction is now more careful when making
601 lisp-objects from pointers on the stack, to avoid creating bogus
602 objects that can be seen by the GC.
603 * bug fix: defaulting of values in contexts expecting more than 7
604 variables now works on x86-64. (reported by Christopher Laux)
605 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
607 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
608 as the property-list of a symbol.
609 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
610 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
611 situations requested, are once again file-compileable. (reported
614 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
615 * MOP improvement: support for user-defined subclasses of
616 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
617 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
618 the expansion of DEFMETHOD, is responsible for generating a form
619 which creates a list of specializers when evaluated. Additional
620 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
621 debugging and introspective support.
622 * minor incompatible change: the (unsupported) spinlock interface
623 has changed: free spinlock now has the value NIL, and a held spinlock
624 has the owning thread as its value.
625 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
626 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
628 * enhancement: name of a socket-stream is now "a socket" instead of
630 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
631 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
632 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
633 for generic functions. (Thanks to Tobias C. Rittweiler)
634 * optimization: bignum printing speed has been improved by 20-40%
635 (depending on the bignum size.)
636 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
638 * bug fix: the cache used by the CLOS to store precomputed effective
639 methods, slot offsets, and constant return values is now thread and
641 * bug fix: generic function dispatch function updating is now thread
642 and interrupt safe (in the sense that the known issues have been
644 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
645 * bug fix: interning EQL-specializers is now thread and interrupt safe.
646 * bug fix: asdf systems with dependencies to the SB-POSIX or
647 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
648 * bug fix: interrupt safety of applicable method computation has been
651 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
652 * new contrib: sb-cover, an experimental code coverage tool, is included
654 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
655 significantly faster.
656 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
657 produce more efficient code on x86-64 if the compiler can determine
658 that (+ INDEX <constant>) does not require a bounds check and FOO
659 has an element type at least 8 bits wide.
660 * enhancement: a new, experimental synchronous timeout facility is
661 provided. Refer to SB-SYS:WITH-DEADLINE for details.
662 * enhancement: when a symbol name conflict error arises, the
663 conflicting symbols are always printed with a package prefix.
664 (thanks to Kevin Reid)
665 * enhancement: stepping is now once again supported on the SPARC and
666 MIPS platforms. (It is also now more likely to work on CheneyGC
668 * enhancement: sb-sprof can now also track and report accurate call
670 * bug fixes: the treatment of non-standard subclasses of
671 SB-MOP:SPECIALIZER is more correct.
672 * incompatible change: PURIFY no longer copies the data from the
673 dynamic space into the static and read-only spaces on platforms
674 that use the generational garbage collector
675 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
677 * bug fix: GC race condition occasionally resulting in crashes with
678 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
680 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
682 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
683 a STYLE-WARNING to be signalled (regression from 1.0.4.)
684 * bug fix: an asynchronous interrupt could previously leave the
685 system running with GC inhibited.
686 * bug fix: a DECLARE form evaluated at top-level now causes an error
687 rather than silently (or verbosely) returning NIL.
688 * bug fix: trying to dissassemble functions compiled at high DEBUG could
689 result in a error being signalled due to source form lookup errors.
690 (reported by Peter Graves)
692 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
693 * incompatible change: removed writer methods for host-ent-name,
694 host-ent-addresses -- changing the values did not update the DNS
696 * minor incompatible change: changed experimental JOIN-THREAD interface
697 * documentation: the manual now lists reader and writer methods
698 in class slot documentation sections. (thanks to Richard M Kreuter)
699 * documentation: unwinding from asyncronous events has been
700 documented as unsafe.
701 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
702 in multithreaded application code.
703 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
704 platforms. (thanks to James Anderson for the optimization hint)
705 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
707 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
708 variants no longer cons.
709 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
710 their NOT- variants no longer cons.
711 * optimization: EQUAL hash tables no longer use SXHASH for objects
712 of all data types, but instead use an EQL hash for types for which
713 EQUAL is the same as EQL.
714 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
715 are significantly faster.
716 * optimization: new STRING-OUTPUT-STREAM implementation is much
717 faster for large outputs and conses 30% less on average.
718 * enhancement: XREF information is now collected for references made
719 to global variables using SYMBOL-VALUE and a constant argument.
720 * enhancement: SIGINT now causes a specific condition
721 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
722 * bug fix: FILE-POSITION used to signal an error in some cases where
723 ANSI requires it to return NIL.
724 * bug fix: ADJUST-ARRAY is now interrupt-safe.
725 * bug fix: adding and removing fd-handlers is now interrupt-safe.
726 * bug fix: inlined calls to C now ensure 16byte stack alignment on
728 * bug fix: bad type declaration in the CLOS implementation has
729 been fixed. (reported by James Anderson)
730 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
731 (thanks to Lutz Euler)
732 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
733 required by the CLHS. (reported by Samium Gromoff)
734 * bug fix: dead unbound variable references now signal an error.
735 (reported by Marco Monteiro)
736 * bug fix: / with an unused value was being deleted in safe code.
737 (thanks to Marco Monteiro and Kevin Reid)
738 * bug fix: number of characters that can be written onto a single
739 line in a file is unlimited.
740 * bug fix: some GC deadlocks caused by asynchronous interrupts have
741 been fixed by inhibiting interrupts for when GC is disabled.
742 * bug fix: some interrupt safety issues with GETHASH, (SETF
743 GETHASH), CLRHASH and REMHASH have been fixed.
744 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
745 specifier no longer causes infinite recursion.
746 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
747 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
748 * bug fix: an &environment argument with the correct variable information
749 is passed to macros that are expanded during byte compilation.
750 (reported by Samium Gromoff)
751 * bug fix: a logic error was causing the hash function for bignums to
752 have excessive amounts of collisions. (reported by Faré Rideau)
753 * bug fix: modifying the contents of an array could change the return
754 value of SXHASH on that array, which is only allowed for strings
755 and bit vectors. (bug introduced in 0.9.16)
756 * improvement: the x86-64/darwin port now passes all tests (except
757 for the debugger tests) but should still be considered
758 experimental until this is fixed.
759 * improvement: a style-warning is signaled for CASE (etc) clauses with
760 duplicate keys. (thanks to Kevin Reid)
761 * improvement: macos/x86 and macos/x86-64 now use mach exception
762 handlers for dealing with illegal instructions (for trapping and
763 error handling) and memory protection violations (for GC).
765 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
766 * new platform: experimental support for x86-64/darwin (MacOS).
767 * incompatible change: the thread-safe (on most platforms) getaddrinfo
768 and getnameinfo sockets functions are used instead of gethostbyaddr
769 and gethostbyname, on platforms where the newer functions are available.
770 As a result, the ALIASES field of HOST-ENT will always be NIL on these
772 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
773 don't print the startup banner, but behave as if --noinform was passed
774 as a command line argument. (thanks to Kevin Reid)
775 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
776 * optimization: code using alien values with undeclared types is much faster.
777 * optimization: the compiler is now able to open code SEARCH in more cases.
778 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
779 * bug fix: using standardized COMMON-LISP special variables as loop
780 variables no longer signals bogus package lock violations. (reported
782 * bug fix: declaring local loop variables to be of a range-limited type
783 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
784 (reported by Andras Simon)
785 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
786 bugs remain on x86-64.)
787 * bug fix: the #= and ## reader macros now interact reasonably with
788 funcallable instances.
789 * bug fix: type-checks for function arguments were compiled using the
790 compiler policy settings of the wrong lexical environment (in 1.0.2
792 * bug fix: SHADOW accepts characters as string designators, as required
793 by the spec (thanks to Eric Marsden)
794 * bug fix: fixed GC safety issues when foreign functions are called with
795 non-base strings as arguments
796 * bug fix: more consistent error output for fatal-compiler-warnings, like
798 * bug fix: functions with proper names were showing up as NIL in
799 backtraces (reported by Edi Weitz, regression in 1.0.2)
801 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
802 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
803 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
804 produce more efficient code on the x86 if the compiler can determine
805 that (+ INDEX <constant>) does not require a bounds check and FOO
806 has an element type at least 8 bits wide.
807 * bug fix: references to undefined variables are handled the same way
808 in toplevel forms as in the normal compiler
809 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
811 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
812 (thanks to Jon Buller)
813 * improvement: faster compilation times for complex functions
814 * improvement: added readlink support to SB-POSIX (thanks to Richard
817 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
818 * improvement: experimental support for mach exception handling on
819 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
821 * improvement: support for GBK external format.
822 (thanks to Chun Tian (binghe))
823 * improvement: the debugger now displays variables that have been closed
824 over, in code compiled with (DEBUG 2) or higher
825 * improvement: support for executable cores on NetBSD (thanks to
827 * new feature: added a RESTART-FRAME debugger command
828 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
829 be used to provide an implementation for FILE-POSITION on Gray streams
830 (thanks to Eric Marsden)
831 * new feature: add syslog, openlog and closelog support to SB-POSIX
832 (thanks to Richard Kreuter)
833 * optimization: the function call overhead in code compiled with
834 a high DEBUG optimization setting is significantly
835 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
836 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
837 (thanks to Tony Martinez)
838 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
839 evaluated once (reported by Kevin Reid)
840 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
841 works again (thanks to Kilian Sprotte)
842 * bug fix: an error is signaled for tagbodies with duplicate tags
843 (thanks to Stephen Wilson)
844 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
845 * bug fix: Win32 port can now handle foreign code unwinding Lisp
846 stack frames from alien callbacks.
847 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
848 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
849 65k pages (thanks to David Woodhouse)
850 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
852 changes in sbcl-1.0.1 relative to sbcl-1.0:
853 * new platform: FreeBSD/x86-64, including support for threading.
854 * new feature: the compiler stores cross-referencing information
855 about function calls (who-calls), macroexpansion (who-macroexpands)
856 and special variables (who-binds, who-sets, who-references) for code
857 compiled with (< SPACE 3). This information is available through the
858 sb-introspect contrib.
859 * new feature: users may subclass SEQUENCE, and have instances of
860 these classes interoperate with standard Common Lisp functions if
861 a number of methods are defined. (This feature is experimental
862 and the interface subject to change based on feedback from SBCL
863 users and the general community)
864 * improvement: sb-sprof traces call stacks to an arbitrary depth on
865 x86/x86-64, rather than the previous fixed depth of 8
866 * improvement: another pthread back-end of mutex "pthread-futex".
867 * bug fix: non-ascii command-line arguments are processed correctly
868 (thanks to Yaroslav Kavenchuk)
869 * bug fix: non-required arguments were not passed correctly when a method
870 defined using DEFMETHOD was called from a mop-generated method using
871 CALL-NEXT-METHOD (reported by Pascal Costanza)
872 * bug fix: recursion is now permitted in accessors through
873 SLOT-UNBOUND. (reported by Pascal Costanza)
874 * bug fix: an error was signaled at startup if the HOME environment
875 variable was defined, but had an empty value (reported by Peter Van Eynde)
876 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
877 signal a PROGRAM-ERROR, not a BUG.
878 * bug fix: SB-POSIX:READDIR works when built with large file support.
879 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
881 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
882 for better automatic indentation support. (thanks to Matt Pillsbury)
883 * optimization: loading generic functions no longer takes O(n^2) time,
884 proportional to the amount of methods in the generic function
885 (reported by Todd Sabin and Jeremy Brown)
886 * optimization: the FIND and POSITION family of sequence functions
887 are significantly faster on arrays whose element types have been
889 * improvements to the Windows port:
890 ** Intermittent heap corruption problems have been fixed. (thanks
891 to Alastair Bridgewater)
892 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
894 ** Lisp is able to unwind foreign exception frames from alien
895 callbacks. (thanks to Alastair Bridgewater)
897 changes in sbcl-1.0 relative to sbcl-0.9.18:
898 * improvement: experimental support for threading on FreeBSD/x86.
899 (thanks to NIIMI Satoshi)
900 * improvement: runtime option --dynamic-space-size can be used
901 to set the size of the dynamic space reserved on startup.
902 * improvement: floating point modes in effect are now saved in
903 core, and restored on startup.
904 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
905 startup, not time since first call to GET-INTERNAL-REAL-TIME.
906 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
907 threads are not running after *SAVE-HOOKS* have run.
908 * improvement: writes to CLOS instance slots are type-checked in code
909 compiled with (SAFETY 3)
910 * improvement: floating-point exception handling on FreeBSD (thanks to
912 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
913 (thanks to Zach Beane)
914 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
916 * improvement: added support for the Shift-JIS external format.
917 (contributed by NIIMI Satoshi)
918 * improvement: callbacks are supported on Linux/PPC. (thanks to
920 * bug fix: compiler bug triggered by a (non-standard) VALUES
921 declaration in a LET* was fixed. (reported by Kaersten Poeck)
922 * bug fix: file compiler no longer confuses validated and already
923 dumped structurres. (reported by Kaersten Poeck)
924 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
925 fill-pointer signals a type-error as required. (thanks to
927 * bug fix: disassemly of funcallable instances works.
928 * bug fix: single stepping on PPC.
929 * bug fix: fix thread-safety problems in the type system (generally
930 manifesting as nonsensical errors like "STRING is a bad type specifier
931 for sequences" or "The value 1 is not of type FIXNUM")
932 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
933 (reported by Josip Gracin)
934 * bug fix: an error is signaled for attempts to displace arrays with
935 incompatible element types (thanks to Mario Mommer)
936 * bug fix: more correct handling of wide characters in debug info
937 (bug reported by Attila Lendvai and fixed by Juho Snellman)
938 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
939 and don't cause extra consing
940 * optimization: MAP and MAP-INTO are significantly faster on vectors
941 whose elements types have been declared.
942 * Improvements to SB-SPROF:
943 ** Support for allocation profiling
944 ** Reduced profiling overhead, especially for long profiling runs
945 * Improvements to the Windows port:
946 ** floating point exceptions are now reported correctly.
947 ** stack exhaustion detection works partially.
948 ** more accurate GET-INTERNAL-REAL-TIME.
949 ** better RUN-PROGRAM behaviour in case of errors in the child
951 ** PROBE-FILE now simplifies pathnames correctly.
952 ** DIRECTORY now works correctly with :WILD-INFERIORS.
953 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
954 1st 1970 (although time timezone data will be unreliable).
955 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
957 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
958 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
959 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
961 * bug fix: two potential GC deadlocks affecting threaded builds.
962 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
963 returns T (reported by Anton Kazennikov)
964 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
965 with non-variable places
966 * bug fix: remove a race condition in the setting of
967 funcallable-instance functions, this should make threaded CLOS
968 code more stable against memory faults.
969 * bug fix: corruption of specials when unbinding is interrupted by an
970 asynchronous unwind (reported by Hannu Koivisto)
971 * improvement: the debugger will now also display local variables that
972 are only used once, for code compiled with a DEBUG optimization quality
975 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
976 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
977 * incompatible change: External-format support for FFI calls. The
978 SB-ALIEN:C-STRING no longer implies an ASCII
979 external-format. Instead the string is subject to external-format
980 conversion. Additionally return values of type SB-ALIEN:C-STRING
981 are by default of type (SIMPLE-ARRAY CHARACTER), not
982 SIMPLE-BASE-STRING. For an alien type that behaves like the old
983 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
984 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
985 * incompatible change: SB-EXT package no longer contains the
986 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
987 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
989 * incompatible change: the single-stepper is no longer available
990 on Alpha, Mips and Sparc platforms.
991 * minor incompatible change: the direct superclasses of
992 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
993 not (STANDARD-OBJECT FUNCTION). This makes the
994 class-precedence-lists of GENERIC-FUNCTION and
995 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
997 * minor incompatible change: the default stream external format on
998 non-unicode SBCL is no longer detected from the locale, but is always
1000 * new feature: Add a version of evaluator that uses an interpreter instead
1001 of the compiler. EVAL still uses the compiler by default, to switch it
1002 to use the interpreter, set the value of the variable
1003 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1004 * minor incompatible change: the single-stepper REPL has been merged
1005 with the normal debugger (see the "Stepping" heading of the debugger help
1006 for more details). The debugger command STEP will no longer switch
1007 to the single-stepper REPL.
1008 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1009 for a type now works.
1010 * bug fix: loading of default sysinit file works. (thanks to Leonid
1012 * bug fix: better detection of circularities in the file-compiler.
1013 (reported by Marco Monteiro)
1014 * bug fix: the CL pathname functions now work with files that have
1015 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1016 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1017 systems with Unix98 pty semantics.
1018 * bug fix: ASDF-INSTALL will now work with bsd tar.
1019 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1021 * bug fix: timers expiring in dead threads no longer cause a
1022 type-error (reported by Paul "Nonny Mouse").
1023 * bug fix: thanks to more lightweight single-stepper instrumentation,
1024 code compiled with (DEBUG 3) will compile and execute significantly faster,
1025 and will have more accurate type-inferencing than before
1026 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1027 whose bindings are modified
1028 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1029 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1030 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1031 CL:SOFTWARE-VERSION with proper version
1033 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1034 * feature: implemented the READER-METHOD-CLASS and
1035 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1036 as specified by AMOP.
1037 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1039 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1040 (thanks to Lutz Euler)
1041 * optimization: hashing of general arrays and vectors has been
1042 improved. (reported by Any Fingerhut)
1043 * enhancement: SB-INTROSPECT is now able to find definitions of
1044 profiled functions. (thanks to Troels Henriksen)
1045 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1046 as well, allowing compiler-macros for SETF-functions to expand.
1047 * enhancement: step-instrumentation no longer wraps known
1048 single-value functions with multiple-value context, allowing
1049 better type inference.
1050 * fixed bug #337: use of MAKE-METHOD in method combination now works
1051 even in the presence of user-defined method classes. (reported by
1052 Bruno Haible and Pascal Costanza)
1053 * fixed bug #339(c): if there are applicable methods not part of any
1054 long-form method-combination group, call INVALID-METHOD-ERROR.
1055 (reported by Bruno Haible)
1056 * fixed bug #361: the :FUNCTION initarg in the protocol for
1057 initialization of methods can now be used to override
1058 internally-produced optimized functions. (reported by Bruno
1060 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1061 system-provided lambda expression no longer cause warnings about
1062 unbound #:|pv-table| symbols.
1063 * bug fix: improved the handling of type declarations and the
1064 detection of violations for keyword arguments with non-constant
1066 * bug fix: potentially erronous calls to PATHNAME and
1067 MERGE-PATHNAMES were being flushed in some cases.
1068 (reported by Richard Kreuter)
1069 * bug fix: compiled calls to TYPEP were mishandling obsolete
1070 instances. (reported by James Bielman and Attila Lendvai)
1071 * bug fix: format strings with ~> without matching ~< no longer
1072 trigger an AVER, but signal an understandable error instead.
1073 (reported by Antonio Martinez)
1074 * bug fix: specifying an output-file without a pathname-type for
1075 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1076 of input-file instead of "fasl". (reported by Robert Dodier)
1077 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1078 (reported by James Y Knight).
1079 * bug fix: compiler-macros-function did not consider the environment
1080 argument for shadowing by local functions.
1081 * bug fix: compiler-macros expansion was inhibited by local INLINE
1083 * bug fix: inline expansions of known functions were subject to
1084 step-instrumentation in high debug policies, leading to problems
1085 with type-inference.
1086 * bug fix: compiler failed to differentiate between different CONS
1087 types in some cases.
1088 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1089 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1090 * bug fix: #368: incorrect use of expressed vs. upgraded array
1092 * bug fix: #306a: more precise unions of array types.
1093 * thread-safety improvements:
1094 ** CONDITION-WAIT could return early on Linux, if the thread was
1095 interrupted and subsequently continued with SIGCONT.
1096 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1098 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1099 * added support for the ucs-2 external format. (contributed by Ivan
1101 * minor incompatible change: pretty printing of objects of type
1102 (cons symbol) is, in the default pprint-dispatch-table, now
1103 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1105 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1106 called later in a class's lifetime, possibly as late as when the
1107 first instance of the class is created. Previously,
1108 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1109 class became finalizeable.
1110 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1111 for multibyte external-format streams. (thanks to "vbzoli")
1112 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1113 with :ALLOCATION :CLASS inherited from superclasses of the
1115 * fixed bug: anonymous classes can now be created using the :NAME
1116 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1117 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1118 * fixed bug: core-files saved with :EXECUTABLE T can again be
1119 executed when SBCL_HOME isn't set. (reported by James Knight)
1120 * fixed bug: toplevel LOCALLY forms with declarations could
1121 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1122 * fixed bug: printing from several different threads using different
1123 values of *print-case* could cause invalid output, due to
1124 some internal special variables of the printer not being bound
1125 thread-locally (reported by Max Mikhanosha)
1126 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1127 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1128 (reported by Pascal Costanza)
1129 * fixed bug: FINALIZE-INHERITANCE is called from
1130 REINITIALIZE-INSTANCE on classes when the class has previously
1131 been finalized, as required by AMOP.
1132 * minor code generation optimizations:
1133 ** better register allocation in CLOS dispatching functions
1134 ** overflow detection when coercing signed bytes to fixnums on x86-64
1135 ** is now implemented with one IMUL instruction instead of three shifts
1136 ** more efficient bit-vector access on x86 and x86-64
1137 ** more efficient access to raw structure slots on x86 and x86-64
1138 * fixed some bugs revealed by Paul Dietz' test suite:
1139 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1140 return its argument.
1142 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1143 * feature: thread support on Solaris/x86, and experimental thread support
1145 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1147 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1148 default method for SLOT-UNBOUND.
1149 * minor incompatible change: prevent the user from specializing the
1150 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1151 somewhat counter to the intent of the protocol, I (CSR) think, and
1152 additionally it just doesn't work in SBCL as currently
1153 implemented, thanks to optimizations (that are always valid for
1154 the other three SLOT-VALUEish functions, but not for the setter).
1155 * minor incompatible change: the :SB-LDB feature is now enabled by
1156 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1157 the low-level debugger.
1158 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1159 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
1160 down to an SB-SYS:FD-STREAM, allowing direct communication in
1161 more cases. Temporary files and pipes are still used as a fallback
1163 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1164 on the non-reentrant C functions localtime(3) and gmtime(3).
1165 * bug fix: global optimization policy was not visible in LOCALLY and
1167 * bug fix: class objects can be used as specializers in methods.
1168 (reported by Pascal Costanza)
1169 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1170 with a type error. (reported by blitz_ on #lisp)
1171 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1172 failed with a type error. (reported by Pascal Bourguignon)
1173 * bug fix: merging pathnames against defaults with :DIRECTORY
1174 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1175 (reported by James Y Knight)
1176 * bug fix: saving large (>2GB) cores on x86-64 now works
1177 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1178 constant index and a (simple-array (signed-byte 32)) array
1179 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1180 error (patch by Robert J. Macomber)
1181 * feature: TIME now displays the amount of run-time spent in GC
1182 * bug fix: The debugger now does a better job of respecting
1183 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1184 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1185 workaround for bug 403.)
1186 * bug fix: floating point exception handling now works on FreeBSD
1187 (thanks to NIIMI Satoshi)
1188 * fixed some bugs revealed by Paul Dietz' test suite:
1189 ** MISC.641: LET-conversion were not supposed to work in late
1191 * improvements to the Win32/x86 port:
1192 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1193 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1195 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1196 * new feature: source path information is generated for macro-expansion
1197 errors for use in IDE's like Slime (thanks to Helmut Eller)
1198 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1199 * bug fix: compiler does not loop forever on an invalid type in
1201 * improvement: compilation of most CLOS applications is significantly
1203 * optimization: added a limited bytecode compiler for simple toplevel
1204 forms, speeding up compilation and FASL loading
1205 * bug fix: the statistical profiler now properly distinguishes anonymous
1208 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1209 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1210 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1211 into subclasses of the finalized class. Now user calls to
1212 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1213 system return before any subclasses are finalized.
1214 * minor incompatible change: The reader no longer ignores errors
1215 regarding non-existent packages in #+ and #- feature tests.
1216 * new feature: command line options --no-sysinit, --no-userinit to
1217 inhibit loading the corresponding init files
1218 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1219 for sending data through UDP sockets (thanks to François-René Rideau)
1220 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1221 error is signalled instead (thanks to François-René Rideau)
1222 * minor incompatible change: Error signalling behaviour of lexical
1223 operations violating package locks has changed slightly. Refer to
1224 documentation on package locks for details.
1225 * enhancement: EVAL can process IF-expressions without resorting to the
1227 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1228 constant-folded properly due to missing out-of-line functions.
1229 (reported by Mika Pihlajamäki)
1230 * bug fix: LISTEN sometimes returned T even in cases where no data was
1231 immediately available from the stream
1232 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1233 were reversed. (reported by Levente Mészáros)
1234 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1235 when given a vector displaced to an adjustable array. (reported
1237 * bug fix: derivation of float boundaries from numbers outside the
1238 appropriate float range (reported by John Wiseman)
1239 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1241 * bug fix: precomputing cache entries for generic functions with
1242 some subclasses of specializers as yet invalid does not attempt to
1243 fill a cache line with a negative offset. (reported by Levente
1245 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1246 allow condition class objects as arguments to DOCUMENTATION and
1247 (SETF DOCUMENTATION); only find and set documentation for
1248 structure names for the STRUCTURE doc-type. (suggested by Gary
1250 * improvements to the Win32/x86 port:
1251 ** (user-homedir-pathname) and default initialization file
1252 locations now know about the user's "Documents and Settings"
1253 directory (thanks to Yaroslav Kavenchuk)
1254 ** run-program is implemented (thanks to Mike Thomas)
1255 ** sockets support (thanks to Timothy Ritchey)
1256 ** better backtrace support (thanks to Alastair Bridgewater)
1257 ** sb-grovel supported
1258 ** asdf-install and sb-posix work somewhat
1259 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1260 * improvements to the Solaris/x86 port:
1261 ** works on Solaris 11/Solaris Express
1262 ** floating-point exception handling support
1263 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1264 * fixed some bugs revealed by Paul Dietz' test suite:
1265 ** REMOVE-METHOD returns its generic function argument even when
1266 the method is not one of the generic functions' methods.
1267 ** objects declared as MEMBER types can be admissible arguments to
1268 structure accessors.
1269 ** printing characters should simply be printed by the FORMAT ~:C
1271 ** compiler failure when compiling functions with hairy constant
1272 defaults for optional parameters.
1273 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1274 function, which is already optimized.
1276 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1277 * new platform: experimental support for SBCL x86/Darwin, including
1278 MacOS X 10.4.5 on Intel.
1279 * new feature: Unicode character names are now known to the system
1280 (through CHAR-NAME and NAME-CHAR).
1281 * new feature: the filesystem location of SBCL's core file is
1282 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1283 * minor incompatible change: the contrib modules SB-POSIX and
1284 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1285 this change is to make it easier to distribute
1286 location-independent binaries.
1287 * bug fix: as implied by AMOP, standardized classes no longer have
1288 slots named by external symbols of public packages. (reported by
1290 * optimization: calling functions via constant symbols -- as in
1291 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1292 via the function object as in (FUNCALL #'FOO).
1293 * optimization: on x86 and x86-64, the calling convention for the
1294 case of dealing with an unknown number of values has been altered
1295 to be friendlier to the prediction heuristics implemented,
1296 particularly with reference to CALL and RET pairing. (thanks to
1297 Alastair Bridgewater)
1298 * optimization: on x86, the code for access to thread-local symbol
1299 values and binding/unbinding of thread-local symbols is smaller.
1300 (thanks to Alastair Bridgewater)
1301 * enhancement: CONSTANTP is now able to determine constantness of
1302 more complex forms, including calls to constant-foldable standardized
1303 functions and some special forms beyond QUOTE.
1304 * fixed bug: occasional GC crashes on Solaris/x86
1305 * optimization: x86-64 supports stack allocation of results of simple
1306 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1307 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1308 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1309 (thanks to James Knight)
1310 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1311 by the standard (thanks to Stephen Compall)
1313 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1314 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1315 be used for bundling the runtime and the core file into one
1316 executable binary. This feature is not currently supported on all SBCL
1317 platforms. (thanks to James Bielman and NIIMI Satoshi)
1318 * new feature: a generational or ephemeral garbage collector is now
1319 the default on the PowerPC platform (both Linux and Darwin). The
1320 old Cheney (stop and copy) collector is a build-time option.
1321 (thanks to Cyrus Harmon, after Raymond Toy)
1322 * minor incompatible change: the method by which SBCL finds its
1323 contributed modules has changed; it no longer relies on symbolic
1324 links from an $SBCL_HOME/systems directory, but searches directly
1325 in the subdirectories of $SBCL_HOME.
1326 * enhancement: the dynamic heap size on the Linux/PPC platform is
1327 markedly larger, even using the older Cheney garbage collector.
1328 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1329 certain complicated string types. (reported by Gary King)
1330 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1331 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1332 * fixed bug: DOCUMENTATION on structures no longer signals an
1333 error if no structure type of the right name exists. (reported by
1335 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1336 applicable non-standard primary or :AROUND method on
1337 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1338 no longer cause unbound variable errors. (reported by Kevin Reid)
1339 * fixed bug: metacircle resolution in cases where methods have slots
1340 added before the slots from STANDARD-METHOD. (reported by Jean
1342 * fixed bug: the Power PC assembly code for calling into lisp
1343 sometimes computed its return address wrongly (depending on the
1344 15th bit of the address, fixed at link time). This used to
1345 manifest itself in a segmentation violation while building PCL.
1346 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1347 many others over the years)
1348 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1349 the stack pointer (treated as a signed integer) is negative.
1350 (thanks to Peter van Eynde)
1352 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1353 * new platform: experimental support for the Windows operating
1354 system has been added. (thanks to Alastair Bridgewater)
1355 * fixed several bugs in and robustified the PPC FFI (including
1356 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1357 * bug fix: allow non-simple string symbol names (reported by Paul
1359 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1361 * bug fix: saving a core corrupted callbacks on x86/x86-64
1362 * bug fix: closed a loophole in metacircularity detection and
1363 grounding in the PCL implementation of CLOS.
1364 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1365 (reported by tomppa on #lisp)
1366 * bug fix: clear the direction flag on Lisp -> C transitions, as
1367 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1368 (reported by Andrej Grozin and Hendrik Maryns)
1369 * optimization: major improvements to GC efficiency on GENCGC platforms
1370 * optimization: faster implementation of EQUAL
1371 * optimization: emit more efficient opcodes for some common
1372 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1373 * optimization: several other minor code-generation improvements on x86-64
1374 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1376 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1377 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1378 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1379 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1380 by ANSI as a generic function, and for consistency (SETF
1381 GENERIC-FUNCTION-NAME) is treated likewise.
1382 * fixed bug #233.b: make constraint propagation notice when a variable
1383 value is changed after it is referenced but before it is used
1384 * fixed bug #296: no more arbitrary behaviour from filenames with
1385 odd characters as --load arguments. (reported by Adam Warner)
1386 * fixed bug #390: :CHARACTER-SET pathname components now work as
1387 expected. (reported by Tim Daly Jr)
1388 * fixed bug #391: complicated :TYPE intersections in slot
1389 definitions no longer cause an error in PCL internals.
1390 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1391 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1392 returning the number of octets which would be written to the
1393 file-stream. (thanks to Robert J. Macomber)
1394 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1395 arguments to the internal stream functions. (thanks to David
1397 * bug fix: stack exhaustion is now handled on the x86/SunOS
1398 platform. (thanks to Daisuke Homma)
1399 * bug fix: more accurate ROOM results on GENCGC platforms
1400 * optimization: improved type inference for arithmetic-for
1401 index variables in LOOP
1402 * optimization: faster floating-point SQRT on x86-64
1403 * fixed some bugs revealed by Paul Dietz' test suite:
1404 ** DOCUMENTATION returns NIL instead of "" for method combinations
1405 that don't have a docstring
1407 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1408 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1409 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1410 therefore are not customizeable by user code (as seems to be at
1411 least permitted and maybe required by AMOP). As a consolation,
1412 however, the SBCL implementation of these functions now calls
1413 REINITIALIZE-INSTANCE as specified by AMOP.
1414 * bug fix: slot-definition documentation is propagated as per ANSI
1415 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1416 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1417 argument, as do eslotd initialization methods. (from Pascal
1418 Costanza's "Closer" project)
1419 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1420 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1422 * bug fix: it is now possible to have more than one subclass of
1423 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1424 (reported by Bruno Haible, Pascal Costanza and others)
1425 * bug fix: the dependent update protocol now works for generic
1426 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1427 and Pascal Costanza)
1428 * bug fix: condition-class instances corresponding to
1429 DEFINE-CONDITION forms are now created eagerly. (reported by
1430 Kalle Olavi Niemitalo on comp.lang.lisp)
1431 * bug fix: floating point printing is more accurate in some
1432 circumstances. (thanks to Simon Alexander)
1433 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1434 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1435 * bug fix: callbacks on OS X now preserve stack-alignment.
1436 (thanks to Cyrus Harmon)
1437 * enhancement: the x86-64 disassembler is much better at
1438 disassembling SSE instructions. (thanks to Lutz Euler)
1439 * enhancement: CHECK-TYPE on a variable now allows type-inference
1440 (thanks to Vincent Arkesteijn)
1441 * optimization: improved performance of EUC-JP external format.
1442 (thanks to NIIMI Satoshi)
1443 * optimization: performance improvements to IO on file streams of
1444 :ELEMENT-TYPE CHARACTER
1445 * optimization: much faster memory allocation on x86-64
1446 * optimization: faster garbage collections (latency and throughput)
1448 * optimization: faster bignum subtraction and division on x86 and x86-64
1449 (thanks to Lutz Euler)
1450 * optimization: more accurate type-inference for loops that use a
1451 floating point index variable or a negative step.
1453 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1454 * bug fix: add a workaround to SBCL looping infinitely at startup on
1455 Linux kernels with apparently buggy implementations of personality().
1456 (thanks to Svein Ove Aas)
1457 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1458 (thanks to David Lichteblau)
1459 * bug fix: local bindings shadow global symbol macros for
1460 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1461 * optimization: non-open coded uses of numeric comparison operators
1462 (e.g. >) no longer cons when called with more than one parameter
1463 on platforms supporting dynamic-extent allocation.
1464 * enhancement: saving cores with foreign code loaded is now supported
1465 on MIPS/Linux in addition to the previously supported platforms.
1466 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1467 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1468 * bug fix: division by zero in sb-sprof when no samples were collected
1469 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1470 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1471 (thanks to Alexander Kjeldaas)
1472 * new feature: ignoring the return values of destructive functions
1473 like NREVERSE signals a compile-time style-warning.
1474 (thanks to Kevin Reid)
1475 * new feature: the alignment of alien structure fields can be
1476 explicitly specified. (thanks to Cyrus Harmon)
1477 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1478 and dump core on SIGQUIT
1480 ** incompatible change: threads do not inherit values of specials
1481 from their parents (see manual)
1482 ** bug fix: threads stacks belonging to dead threads are freed by the
1483 next exiting thread, no need to gc to collect thread stacks anymore
1484 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1485 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1486 ** bug fix: dynamic variable and thread start related gc lossage
1487 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1489 * fixed some bugs revealed by Paul Dietz' test suite:
1490 ** SUBTYPEP is slightly more accurate on heinously complicated
1491 CONS types where some of the members have uncertain (in the
1492 NIL, NIL sense) type relationships to each other.
1494 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1495 no longer purified unless :PURIFY T is explicitly specified.
1496 ** Non-purified cores are significantly smaller than before
1498 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1499 * new feature: timers based on Zach Beane's excellent timer package
1500 * added support for the following external formats: koi8-u,
1501 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1502 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1503 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1504 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1505 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1506 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1507 * incompatible change: a threaded SBCL will no longer revert to
1508 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1509 * bug fix: interrupts are disabled until startup is complete; no
1510 more sigsegvs when receiving a signal to soon
1511 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1513 * bug fix: add a workaround for the memory randomization features in
1514 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1515 workaround will only be in effect on systems with the proc filesystem
1517 * bug fix: printing objects of type HASH-TABLE signals a
1518 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1520 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1521 have been running for over 50 days. (reported by Gilbert Baumann)
1522 * bug fix: the logic for getting names of functions gets less
1523 confused when confronded with alternate-metaclass
1524 funcallable-instances. (reported by Cyrus Harmon)
1525 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1526 consistent, even on internal alternate-metaclass objects.
1527 * bug fix: flush closure information collected by physical
1528 environment analysis prepass before the main pass. (bug reported
1530 * bug fix: compiler pack phase does not modify a hashtable, which is
1531 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1532 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1533 may be expanded. (reported by Alexander <malishev> on c.l.l)
1534 * bug fix: no more style-warnings when compiling code using LAST
1535 under high-SPEED low-SPACE settings. (reported by David Wallin
1537 * fixed some incompatibilities between SBCL's MOP and the MOP
1539 ** the METAOBJECT class is now implemented;
1540 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1541 STANDARD-OBJECT, as required;
1542 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1543 now compatible (as required by VALIDATE-SUPERCLASS); there
1544 remains a consistency requirement over the presence or absence
1545 of the FUNCTION class in the superclass list of finalized
1546 classes; see the manual for more details;
1547 ** the :AROUND method for COMPUTE-SLOTS on
1548 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1549 requested slot ordering.
1551 ** bug fix: parent thread now can be gc'ed even with a live
1553 ** bug fix: binding a special with PROGV to no value is not
1554 the same as that symbol not having been bound (thanks to
1556 ** bug fix: binding specials is thread safe (thanks to
1558 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1559 and SB-SPROF do not die with 'no handler for signal XX in
1560 interrupt_handle_now(..)' anymore
1561 ** bug fix: WITH-TIMEOUT works with multiple running threads
1562 * fixed some bugs revealed by Paul Dietz' test suite:
1563 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1564 the :method-class keyword argument.
1566 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1567 * new port: the Solaris operating system on x86 processors is now
1568 mostly supported, though some rough edges in the environment
1569 remain. (thanks to Daisuke Homma)
1570 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1571 space for its heap. (thanks to Thiemo Seufer)
1572 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1573 closures. (thanks to Thiemo Seufer)
1574 * minor incompatible change: eof selects abort in the debugger.
1575 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1576 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1578 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1579 deprecated, and will go away in a future revision of SBCL.
1580 * minor incompatible change: GC-ON and GC-OFF are no longer
1581 implemented with a counter, it does not matter how many times gc
1582 is switched on or off
1583 * bug fix: discriminating functions for generic function classes
1584 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1585 make invalid assumptions about method precedence order. (reported
1587 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1588 platforms. (thanks to Thiemo Seufer)
1589 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1590 * bug fix: correct pathname printing with printer escaping is on.
1591 (thanks to Kevin Reid)
1592 * bug fix: complex VOP definitions in "user-space" no longer trigger
1593 package locks. (reported by Zach Beane)
1594 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1595 for funcallable-instance functions, and is no different from
1597 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1598 characters in the current readtable. (reported by Nicholas Neuss)
1599 * bug fix: SUBTYPEP on various CONS types returns more a more
1600 accurate acknowledgment of its certainty.
1601 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1602 lists in some cases. This partially fixes bug 384.
1603 * flush all standard streams before prompting in the REPL and the
1605 * bug fix: signal handling and triggering gc do not conflict
1606 directly anymore, in particular a high frequency sb-sprof does
1607 not prevent gc from running
1608 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1609 approximation for timezone and DST information between the
1610 universal time epoch and the smallest negative 32-bit time_t.
1611 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1612 year 1899 so long as the encoded time is non-negative.
1613 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1614 the correct answer for non-constant rotate amounts when performing
1615 an inline 32-bit rotation.
1617 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1618 there is only one thread in the session
1619 ** bug fix: memory leak for streams created in one thread and
1620 written to in another
1621 ** bug fix: lockup when compiled with gcc4
1622 ** bug fix: race that allows the gc to be triggered when gc is
1624 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1625 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1627 ** bug fix: finished threads are gc'ed properly
1628 * fixed some bugs revealed by Paul Dietz' test suite:
1629 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1630 has arguments with a different set of applicable methods from
1631 the orignal arguments.
1632 ** The type error thrown by MAP now has a correct expected-type
1634 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1635 name a compiled function.
1636 ** Three MISC tests where a large bignum was improperly coerced to
1637 a float that couldn't represent that bignum during type
1638 derivation were fixed.
1639 ** SUBTYPEP can now handle types involving the negation of a
1640 list-form FUNCTION type.
1641 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1642 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1643 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1645 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1646 * New feature: Experimental support for bivalent streams: streams
1647 opened with :element-type :default now allow character and binary
1648 (unsigned-byte 8) I/O
1649 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1650 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1652 * bug fix: no more highly sporadic "couldn't check whether ~S is
1653 readable" when reading a stream and an interrupt hits in the middle
1654 of a select system call
1655 * compiler better recognizes complex arrays (reported by Eduardo
1657 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1658 for variables on SBCL built with linkage-tables. (reported by Luis
1660 * various error reporting improvements.
1661 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1662 (Thanks to Thiemo Seufer)
1663 * bug fix: nested reader invokations work correctly
1664 * bug fix: it is possible to have simultaneous references to foreign
1665 code and foreign data with the same name.
1667 ** added x86-64 support
1668 ** incompatible change: the threading api now works with thread
1669 objects instead of thread ids
1670 ** bug fix: threads are protected from signals and interruption when
1671 starting up or going down
1672 ** bug fix: a race where an exiting thread could lose its stack to gc
1673 ** bug fix: don't halt on infinite error in threads if possible
1674 ** fixed numerous gc deadlocks introduced in the pthread merge
1675 ** bug fix: fixed thread safety issues in read and print
1676 ** bug fix: debugger doesn't hang on session lock if interrupted at
1677 an inappropriate moment
1678 ** bug fix: run-program is now thread safe(r)
1679 ** bug fix: inner with-recursive-lock no longer releases the mutex
1680 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1681 * fixed some bugs revealed by Paul Dietz' test suite:
1682 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1683 EXPECTED-TYPE slots filled.
1684 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1686 ** MAKE-CONDITION accepts classes as type-designators.
1687 ** COMPILE may never return NIL.
1688 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1689 range before calling Unix time functions
1691 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1692 * numerous signal handling fixes to increase stability
1693 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1694 * minor incompatible change: we now correctly canonize default
1695 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1696 as per the MOP, rather than the historical (INITARG INITFUNCTION
1697 INITFORM). (reported by Bruno Haible)
1698 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1699 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1700 for more information.
1701 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1702 pathname is a directory pathname.
1703 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1704 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1706 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1707 :METACLASS argument in addition to a class name. (reported by
1708 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1709 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1710 (reported by Bruno Haible; patch from Gerd Moellmann)
1711 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1713 * bug fix: more cleanups to the floating point exception handling on
1714 x86-64 (thanks to James Knight)
1715 * bug fix: the compiler does not try to constant fold calls of
1716 COERCE and BIT-* functions when they return freshly constructed
1717 objects. (reported by Nikodemus Siivola and Paul Dietz)
1718 * optimization: improved the MIPS versions of generic (in the
1719 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1720 * optimization: direct conversion of (unsigned-byte 32) to floats on
1721 the PowerPC platform.
1722 * optimization: structure instances with raw slots now use less
1723 memory, and probably show better memory locality. (thanks to
1725 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1726 are treated as requests for stack allocation on the x86-64,
1727 Alpha-32, PPC and SPARC platforms.
1728 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1729 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1730 (thanks to Tony Martinez)
1732 ** gcing a dead thread can no longer lead to lockups
1733 ** threads block signals until they are set up properly
1734 ** errno is no longer shared by threads
1735 ** interrupt-thread restores the eflags register on x86
1736 ** fixed some lockups due to gc/thread interaction
1737 * fixed some bugs revealed by Paul Dietz' test suite:
1738 ** invalid dotted lists no longer raise a read error when
1739 *READ-SUPPRESS* is T
1740 ** signal an error if a symbol that names a declaration is used
1741 as the name of a type, or vice versa
1742 ** allow using the (declare (typespec var*)) abbreviation for
1743 (declare (type typespec var*)) with all type specifiers
1744 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1745 ** always return NIL from PPRINT-POP when OBJECT is NIL
1746 ** don't signal errors when pretty-printing malformed LABELS,
1747 FLET or MACROLET forms
1748 ** declarations in a DOLIST body are also in scope for the
1750 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1752 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1755 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1756 * fixed cross-compiler leakages that prevented building a 32-bit
1757 target with a 64-bit host compiler.
1758 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1759 opened with :IF-EXISTS :OVERWRITE.
1760 * fixed bug 281: error for an invalid qualifier in a short-form method
1761 combination method is not signalled until the faulty method is called.
1762 * bug fix: iteration variable type inferrer failed to deal with open
1763 intervals. (reported by Alan Shields)
1764 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1765 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1766 or more runtime options were provided to the sbcl binary.
1767 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1768 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1769 * optimization: there's now a fast-path for fixnum arguments in the
1770 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1771 * optimization: the code generated on x86-64 is more compact thanks
1772 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1773 * bug fix: floating-point exception handling now partly works on
1774 x86-64. (Thanks to James Knight)
1775 * improvement to the MIPS backend from Thiemo Seufer: C-style
1776 64-bit long long arguments and return values to alien functions
1778 * fixed some bugs revealed by Paul Dietz' test suite:
1779 ** the type-error signalled from WARN has a filled-in DATUM slot.
1780 ** the type-error required when a stream is not associated with
1781 a file has the stream as its datum.
1782 ** type-errors on single-floats on x86-64 no longer have
1783 :INVALID-OBJECT as the datum
1784 ** the type-errors signalled for invalid function names now have
1785 a correct expected type
1786 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1787 for structures defined with a :TYPE. Documentation strings for
1788 typed structures are no longer immediately discarded
1789 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1790 broadcast streams and synonym streams. FILE-LENGTH now also works
1791 on broadcast streams.
1793 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1794 * incompatible change: the --noprogrammer option, deprecated since
1795 version 0.7.5, has been removed. Please use the equivalent
1796 --disable-debugger option instead.
1797 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1799 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1800 inoperational for a while now) has been completely removed.
1801 * null lexical environments are now printed as #<NULL-LEXENV>,
1802 significantly reducing the amount of clutter in typical backtraces.
1803 * documentation on weak pointers, finalization, and after GC hooks
1804 has been added to the manual.
1805 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1806 as other specialized array types, is much faster. SUBSEQ and
1807 COPY-SEQ on such arrays have also been sped up.
1808 * optimization: EQL is now more efficient when at least other argument
1809 is known to be of type (OR FIXNUM (NOT NUMBER)).
1810 * fixed bug: the runtime is now less vulnerable to changes in the
1811 size of the SBCL object on OS X, and virtual memory is reserved for
1812 all spaces that need to be at a fixed address.
1813 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1814 * fixed bug: finalizers and after GC hooks that cause consing are now
1816 * fixed bug: compiler error messages and summaries are now printed to
1817 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1818 * fixed inference of the upper bound of an iteration variable.
1819 (reported by Rajat Datta).
1820 * fixed bug 211e: calling local functions with duplicated constant
1821 keyword argument no longer causes a bogus style warning about an
1823 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1824 ftype declaration to be disregarded. (reported by Dave Roberts)
1825 * fixed bug 373: caused by erronous compilation of references to alien
1826 variables in the runtime on ppc/darwin.
1827 * fixed bug 376: CONJUGATE type deriver.
1828 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1829 (reported by Baughn on #lisp)
1830 * a cross-compiler bug on non-x86 platforms has been identified and
1831 fixed. (thanks to Bruno Haible)
1832 * improvements to the MIPS runtime code for increased stability.
1833 (thanks to Thiemo Seufer)
1834 * increased the maximimum compact environment size to allow
1835 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1836 * partial workaround for bug 135: don't name the function we're
1837 calling for hairy cases of EVAL, so as not to accumulate one environment
1838 entry per call to EVAL. (reported by Kevin Reid)
1839 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1840 * optimization: type testing for non-vector arrays should be faster.
1841 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1843 * bug fix: setting 31st element of a bit vector to zero did not work
1845 * bug fix: redefining a class definition which failed due to a
1846 previous accessor / function clash now works (but see BUGS entry
1847 #380 for more problems in this area). (thanks to Zach Beane)
1848 * the long form of DEFINE-METHOD-COMBINATION disables method group
1849 checking when given a single method group with pattern *. (thanks
1851 * on x86 compiler supports stack allocation of results of simple
1852 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1853 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1854 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1855 * fixed some bugs related to Unicode integration:
1856 ** the restarts for recovering from input and output encoding
1857 errors only appear when there is in fact such an error to
1859 * fixed some bugs revealed by Paul Dietz' test suite:
1860 ** MISC.549 and similar: late transformation of unsafe type
1861 assertions into derived types caused unexpected code
1863 ** SCALE-FLOAT type deriver is less wrong.
1864 ** type derivers for EXP, LOG and similar functions compute result
1865 types for complex arguments better.
1866 ** (MISC.563) CONJUGATE type deriver works for very restricted
1868 ** out-of-line type testers for character strings are available.
1869 ** EQUAL compiler transform understands specialness of objects
1871 ** accessing double-floats stored on the stack now works on x86-64.
1872 ** debugger internals could sometimes create invalid lispobjs,
1873 resulting in GC crashes.
1874 ** MISC.548: type check weakening can convert required type into
1876 ** initialization forms for bindings are not in scope of free special
1879 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1880 * incompatible change: thread support for non-NPTL systems has
1881 been removed - locking is buggy and unreliable. A threaded
1882 SBCL build will now warn at startup and refuse to create
1883 new threads, unless futex support is detected in the kernel
1884 * incompatible change: the top level REPL now has only an ABORT
1885 restart associated with it, not TOPLEVEL and ABORT as it used to.
1886 TOP and TOPLEVEL are now available as debugger commands for
1887 returning to the top level.
1888 * incompatible change: forms evaluated in the REPL now use the
1889 global optimization policy.
1890 * incompatible change: user- and system-initialization files are
1891 no longer processed with LOAD, but by READ and EVAL; hence the
1892 global optimization policy, startup package, readtable, etc,
1894 * The .fasl file format number has been incremented because of
1895 various incompatible changes.
1896 * internal entry point details and argument counts no longer appear
1897 in backtraces unless explicitly requested by setting
1898 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1899 * built-in and standard functions no longer have names like "top
1900 level local call to FOO".
1901 * fixed bug 32: functions defined in non-null lexical environments
1902 now have more legible printed representation
1903 * fixed bug 33: functions defined in non-null lexical environemnts
1904 are now more amenable to inspection by INSPECT.
1905 * workaround for bug 354: XEPs no longer appear in backtraces unless
1906 explicitly requested.
1907 * fixed bug: receiving the signal which results from attempting to
1908 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1909 SIGBUS on other *BSDs) on architectures where the C stack is also
1910 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1911 to debugger confusion or wild instability. (reported by Cheuksan
1913 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1914 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1915 (reported by Lutz Euler)
1916 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1917 compiled code. (reported by Paul Dietz)
1918 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1919 specialized parameter to a method to something that is not TYPEP
1920 the specializer is now possible.
1921 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1922 face of package deletion.
1923 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1924 pathname. (reported by David Tolpin on c.l.l)
1925 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1926 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1927 STRING-STREAM and FILE-STREAM, respectively.
1928 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1929 than previously; in addition, its test suite is now run on build.
1930 (thanks to Luke Gorrie)
1931 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1932 * optimization: added a immediate representation for single-floats
1934 * fixed some bugs revealed by Paul Dietz' test suite:
1935 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1936 ** attempting to create a package with a colliding nickname causes
1937 correctable errors to be signalled.
1938 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1939 ** several x86-64 backend bugs related to sign-extension of immediate
1942 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1943 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1944 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1946 * fixed loading of multiply forward-referenced layouts.
1947 (thanks to Cheuksan Wang)
1948 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1949 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1950 (see COMPILE-FILE documentation for details of :PRINT option)
1951 * fixed bugs 19 and 317: fixed-format floating point printing is
1952 more accurate. This also fixes a bug reported by Adam Warner
1953 related to the ~@F format directive.
1954 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1956 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1957 dispatch table if the from-char is a dispatch macro character.
1958 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1959 by the wordsize no longer ignore the last word. (reported by Lutz
1961 * fixed bug in type checking of dynamic-extent variables. (reported
1963 * optimization: sequence traversal functions use their freedom to
1964 coerce function designators to functions.
1965 * optimization: code with many calls to CLOS methods specialized on
1966 CLOS classes has had redundant type checks removed.
1967 * optimization: added declarations to speed up operations that access
1968 the internal character database (for example STRING-UPCASE)
1969 * optimization: comparison operations between floats and sufficiently small
1970 fixnums no longer create extra rationals
1971 * fixed some bugs related to Unicode integration:
1972 ** portions of multibyte characters at the end of buffers for
1973 character-based file input are correctly transferred to the
1974 start of the buffer at the next read.
1975 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1976 passing it through to OPEN.
1977 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1978 argument given to internal calls to OPEN.
1979 ** the built-in comment readers (introduced by character sequences
1980 ";" and "#|") are more forgiving to encoding errors; they will
1981 STYLE-WARN and then attempt to resync the stream at a character
1982 boundary. (thanks to Teemu Kalvas)
1983 * fixed some bugs in the x86-64 port:
1984 ** Negative short int return values from c-calls are sign-extended
1986 ** The stack is aligned to 16-bytes for c-calls, as required by
1987 the ABI. (thanks to Cheuksan Wang)
1988 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1989 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1990 for enums. (thanks to Vincent Arkesteijn)
1991 ** Multiple small optimizations and bugfixes for floating point
1993 * fixed some bugs revealed by Paul Dietz' test suite:
1994 ** Space, Tab, Linefeed, Return and Page have the invalid
1995 secondary constituent character trait.
1996 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1998 ** WITH-INPUT-FROM-STRING should only update the index place on
2000 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2001 works more reliably.
2002 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2003 with one-dimensional arrays with fill pointers.
2004 ** TYPE-OF failed on a complex with an integer realpart and a
2006 ** compiler failure during type inference for the code of form
2007 (IF (EQL X (THE ...)) ...) (MISC.535).
2009 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2010 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2011 platform. The port supports 61-bit fixnums, large memory spaces
2012 and reloading shared object files.
2013 * enhancement: saving cores with foreign code loaded is now
2014 supported on ppc/Darwin in addition to the previously supported
2016 * enhancement: the statistical profiler now walks deeper into the
2017 call stack for more meaningful call-graphs and accrued time
2018 reports (x86/x86-64 only). It also now reports time spent in
2020 * enhancement: it is now possible to trace most individual methods
2021 of a generic function in addition to tracing the generic function
2023 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2025 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2026 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2027 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2028 produces an error. (thanks to Vincent Arkesteijn)
2029 * bug fix: NAMESTRING on pathnames with :WILD components in their
2030 directories works correctly. (thanks to Artem V. Andreev)
2031 * fixed bug 125: compiler preserves identity of closures. (reported
2033 * bug fixed: functions with &REST arguments sometimes failed with
2034 "Undefined function" when compiled with (DEBUG 3). (reported by
2036 * bug fix: overflow during compiling of setting element of a bit
2037 vector with constant index and value. (reported by Timmy Douglas)
2038 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2039 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2040 * on x86 compiler partially supports stack allocation of dynamic-extent
2042 * GO and RETURN-FROM do not check the extent of their exit points
2043 when compiled with SAFETY 0.
2044 * fixed some bugs related to Unicode integration:
2045 ** encoding and decoding errors are now much more robustly
2046 handled; it should now be possible to recover even from invalid
2047 input or output to the terminal. (thanks to Teemu Kalvas)
2048 ** provided a first cut at implementing STRING-TO-OCTETS and
2049 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2050 ** altered the SB-MD5 contributed module slightly, changing the
2051 interface just enough for it to be supportable for builds where
2052 lisp characters are not eight bits.
2053 * fixed some bugs revealed by Paul Dietz' test suite:
2054 ** the FORMATTER-generated functions for ~V[ conditionals require
2055 the correct number of arguments.
2056 ** READ-FROM-STRING returns the mandated second value when applied
2057 to displaced strings.
2058 ** the #\Rubout and #\Backspace characters are treated as invalid
2059 constituent characters by the tokenizer.
2061 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2062 * new feature: reloading changed shared object files with
2063 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2064 * new feature: references to foreign variables and functions
2065 can now be compiled and loaded before the corresponding shared
2066 object file is loaded, as long as the foreign definitions are
2067 available at runtime.
2068 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2069 supported. (thanks to Dan Debertin)
2070 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2071 just keywords. (thanks to Vincent Arkesteijn)
2072 * fixed bug #331: structure-class instances corresponding to
2073 DEFSTRUCT forms are now created eagerly.
2074 * fixed bug #345: backtraces from calls to undefined functions work
2075 on x86 as well. Related bug #61 is now also partially fixed on x86
2076 (backtraces from throws to unknown catch tags.)
2077 * bug fix: lambda-list parsing is now stricter vrt. order and number
2078 of lambda-list keywords.
2079 * bug fix: as specified by AMOP, an error is signalled if a
2080 class-option appears multiple times in a DEFCLASS form. (reported
2082 * bug fix: RANDOM can be compiled when the compiler derives the type
2083 of its numeric argument as a disjoint set of small integers.
2084 (reported by Paul Dietz)
2085 * bug fix: starting a core saved with shared objects loaded when
2086 those objects are not available no longer causes threaded SBCL to
2087 hang. (reported by Sean Ross)
2088 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2090 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2091 argument, which must always be NIL. (reported by Kalle Niemitalo)
2092 * bug fix: printing 1.0d+23 no longer results in an error.
2093 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2094 * bug fix: structure slot setters preserve evaluation order. (thanks
2096 * fixed some bugs related to Unicode integration:
2097 ** RUN-PROGRAM can allow its child to take input from a Lisp
2098 stream. (reported by Stefan Scholl)
2099 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2100 locales. (reported by Ken Causey)
2101 * fixed some bugs revealed by Paul Dietz' test suite:
2102 ** INCF, DECF and REMF evaluate their place form as specified in
2104 ** FORMATTER expands ~{ ~} iteration directives with V or #
2105 parameters correctly.
2106 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2107 consequent uses no arguments correctly.
2108 ** the system has a partial understanding of the (COMPLEX RATIO)
2110 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2113 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2114 * new feature: a build-time option (controlled by the :SB-UNICODE
2115 keyword feature, enabled by default) for building the system with
2116 support for the entire 21-bit character space defined by the
2118 * new feature: the system now has rudimentary external-format
2119 support; the primary user-visible change at this time is that
2120 characters with the high bit set (such as lower-case-e-acute) will
2121 print correctly to a terminal in a UTF-8 environment.
2122 * minor incompatible change: BASE-CHAR no longer names a class;
2123 however, CHARACTER continues to do so, as required by ANSI.
2124 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2125 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2126 has been moved to the SB-EXT package (temporarily re-exported from
2128 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2129 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2131 * fixed bug #351: better error-handlind and reporting for malformed
2133 * fixed bug #350: bignum-printing is now more memory-efficient,
2134 allowing printing of very large bignums, eg. (expt 2 10000000).
2135 (reported by Bruno Haible)
2136 * fixed bug #302: better primitive-type selection for intersection
2138 * fixed bug #308: non-graphic characters now all have names, as
2139 required. (reported by Bruno Haible)
2140 * bug fix: redefining a class with different superclasses now correctly
2141 removes it from the direct-subclasses of its previous superclasses.
2142 (reported by David Morse)
2143 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2144 new value now works. (reported by Bruno Haible)
2145 * bug fix: correct canonicalization of multiple non-standard slot
2146 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2147 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2148 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2149 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2150 now exists, an signals an error.
2151 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2152 during macroexpansion for non-iteration variables as well. (reported
2153 by Bruno Haible for CMUCL)
2154 * bug fix: Cyclic structures and unprintable objects in compiler
2155 messages no longer cause errors. (reported by Bruno Haible)
2156 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2157 and READ-FROM-STRING all now return a primary value of NIL if
2158 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2159 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2160 (reported by Bruno Haible for CMUCL)
2161 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2162 do not designate a condition. (reported by Bruno Haible for
2164 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2165 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2166 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2167 permitting resolution in favour of any of the conflicting symbols.
2168 (reported by Bruno Haible for CMUCL)
2169 * bug fix: EQUAL compiler optimizations is less aggressive on
2170 strings which can potentially compare true despite having distinct
2171 specialized array element types.
2172 * bug fix: unit enumerations can be defined without dividing by
2173 zero. (thanks to Vincent Arkesteijn)
2174 * FORMAT compile-time argument count checking has been enhanced.
2175 (report from Bruno Haible for CMUCL)
2176 * a partial workaround for the bug 262: the compiler does not try to
2177 inline-expand a local function doing RETURN-FROM from a deleted
2178 BLOCK. (thanks to Peter Denno for the bug report and to David
2179 Wragg for the simple test case)
2180 * fixed some bugs revealed by Paul Dietz' test suite:
2181 ** RENAME-PACKAGE allows all package designators as new package
2183 ** constraint propagation and lambda variable substitution are
2184 more cautious in dealing with partially deleted code.
2185 ** compiler sometimes lost reoptimization passes.
2186 ** CERROR, given a condition as condition designator, passes its
2187 remaining arguments to the continue format control without
2189 ** Case-altering FORMAT directives work correctly on non-ASCII
2191 ** The REAL type specifier handles bounds outside the floating
2192 point ranges without signalling FLOATING-POINT-OVERFLOW.
2193 ** Functions with IR1-transformations can create intercomponent
2194 references to global functions.
2195 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2197 ** FORMAT ~R treats a nil value for its first parameter correctly.
2199 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2200 * enhancement: saving cores with foreign code loaded is now
2201 supported on x86/NetBSD and sparc/Linux in addition to the previously
2202 supported platforms.
2203 * bug fix: on some platforms repeated installations caused multiple
2204 copies of HTML documentation to be installed -- should not happen
2205 any more. (reported by Stefan Scholl)
2206 * bug fix: parsing self-recursive alien record types multiple times
2207 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2208 original patch by Helmut Eller for CMUCL)
2209 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2210 (thanks to Richard Kreuter)
2211 * bug fix: defining classes whose accessors are methods on existing
2212 generic functions in other (locked) packages no longer signals
2213 bogus package lock violations. (reported by François-René Rideau)
2214 * bug fix: special variables as DEFMETHOD parameters no longer have
2215 associated bogus type declarations. (reported by David Wragg and
2217 * bug fix: read-write consistency on streams of element-type
2218 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2219 * bug fix: redefiniton of the only method of a generic function with
2220 no DEFGENERIC no longer emits a full WARNING. In addition,
2221 redefinition of generic functions with no DEFGENERIC to an
2222 incompatible lambda list now signals an error. (thanks to Zach
2224 * bug fix: DEFGENERIC now works even when there's a function of the
2225 same name in an enclosing lexical environment. (thanks to Zach
2227 * fixed compiler failure, caused by instrumenting code during
2228 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2229 * optimization: added loop analysis and improved register allocation
2230 * fixed some bugs revealed by Paul Dietz' test suite:
2231 ** POSITION on displaced vectors with non-zero displacement
2232 returns the right answer.
2233 ** (SIMPLE-STRING) is a valid type specifier for sequence
2235 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2237 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2238 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2240 ** The justification version of the FORMAT ~< directive treats
2241 non-zero minpad parameter correctly.
2243 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2244 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2245 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2246 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2247 the supported interface.
2248 * new feature: Single-stepping of code compiled with DEBUG 2 or
2249 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2250 * new feature: saving cores with foreign code loaded is now
2251 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2252 Timothy Moore's work for CMUCL)
2253 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2254 parameters to * instead of NIL if no initform is supplied.
2255 (reported by Johan Bockgaard)
2256 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2257 correctly when FUNCALL appears as the car of the form. Note:
2258 despite this FUNCALL forms are not currently subject to
2259 compiler-macro expansion. (port of Raymond Toy's fix for the
2260 same from CMUCL, reported by Johan Bockgaard)
2261 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2262 (thanks for Teemu Kalvas)
2263 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2264 case instead of terminating the iteration (thanks for Julian
2265 Squires, Sean Champ and Raymond Toy)
2266 * bug fix: incorrect expansion of defgeneric that caused a style
2267 warning. (thanks for Zach Beane)
2268 * bug fix: slot accessor effective method computation works properly
2269 for classes with multiple non-standard applicable methods on
2270 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2271 * on x86 compiler supports stack allocation of results of LIST and
2272 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2273 CMUCL implementation by Gerd Moellmann)
2274 * fixed some bugs revealed by Paul Dietz' test suite:
2275 ** FORMAT strings with both the ~<~:;~> form of the justification
2276 directive and pretty-printing directives cause an error.
2278 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2279 * incompatible change: the internal functions
2280 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2281 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2282 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2283 instead of the old functions.
2284 * new feature: on platforms where "dladdr" is available foreign
2285 function names now appear in backtraces. (based on Helmut Eller's
2287 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2288 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2290 * documentation: ASDF manual is now distributed with SBCL.
2291 * bug fix: SBCL can now load its contributed modules with REQUIRE
2292 even if the system-provided entries have been removed from
2293 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2295 * bug fix: backtraces involving undefined functions or assembly
2296 routines are more informative. (thanks to Brian Downing)
2297 * bug fix: mutually referent alien structures now work correctly.
2298 (reported by Rick Taube)
2299 * bug fix: structures defined by WITH-ALIEN can be referred to
2300 within other definitions in the same WITH-ALIEN.
2301 * bug fix: division operators (MOD, TRUNCATE and the like) with
2302 constant zero divisors and integer dividends no longer generate
2304 * bug fix: provide default methods for INPUT-STREAM-P and
2305 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2306 * bug fix: improve the detection and resolution of MOP metacycles
2307 (where effective method computation depends on the generic function
2308 having its effective method computed). (reported by Bruno Haible)
2309 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2310 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2311 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2312 * bug fix: pathnames with relative directory components can be
2313 represented relative to default pathnames.
2314 * optimization: in taking the GCD of bignums, reduce the two bignums
2315 to approximately the same size (using Euclid's algorithm) before
2316 applying the more sophisticated binary GCD. (thanks to Juho
2318 * optimization: COUNT on bitvectors now operates word-at-a-time.
2319 * optimization: ASH with a positive, but not necessarily constant,
2320 (leftwards) shift, when in a modular context, is compiled to a
2322 * fixed some bugs revealed by Paul Dietz' test suite:
2323 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2324 if the corresponding argument is NIL.
2325 ** FORMAT directives accepting a minpad parameter treat negative
2327 ** literal commas as character parameters to FORMAT directives are
2329 ** literal spaces directly after ~<Newline> directives within a
2330 format-logical-block (~:< ~@:>) do not induce :FILL-style
2331 conditional newlines.
2332 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2333 as specified: it no longer includes conditional newlines).
2334 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2336 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2337 :PER-LINE-PREFIX argument does not evaluate to a string.
2339 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2340 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2341 the manual for details; for now, package locks can be disabled by
2342 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2343 if no major problems are found then it is likely that they will be
2344 compiled in unconditionally.
2345 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2346 unsupported operators on all platforms. To load a shared library
2347 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2348 object file, link it into a shared library outside of SBCL and
2349 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2351 * bug workaround: ROOM T and the GC were not working together
2352 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2353 reporting facility aren't preserved. That reporting has been
2354 disabled, so now until and unless someone figures out how to make it
2355 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2356 * minor incompatible change: as threatened around sbcl-0.8.0, the
2357 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2358 The symbols are also exported from SB-PCL for backwards
2359 compatibility, but more so than before SB-PCL should be treated as
2360 an implementation-internal package.
2361 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2363 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2364 It is known as of this release not to work on the Alpha, however.
2365 * fixed bug #167: errors signalled due to illegal syntax in method
2366 bodies are now more legible.
2367 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2368 designators and can hence be used with TYPEP.
2369 * fixed bug #333: CHECK-TYPE now ensures that the type error
2370 signalled, if any, has the right object to be accessed by
2371 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2372 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2373 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2375 * fixed bug #334: programmatic addition of slots using specialized
2376 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2377 and :ALLOCATION :CLASS slots.
2378 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2379 float exponents. (rereported by Peter Seibel)
2380 * fixed a bug: #\Space (and other whitespace characters) are no
2381 longer considered to be macro characters in standard syntax by
2382 GET-MACRO-CHARACTER.
2383 * fixed bug: initialization of condition class metaobjects no longer
2384 causes an instance of the condition to be created. (reported by
2386 * fixed bug: it is now possible to have slots such that
2387 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2388 description is neither :INSTANCE nor :CLASS.
2389 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2390 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2391 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2392 non-standard SLOT-DEFINITION-ALLOCATION values.
2393 * fixed bugs: various race conditions handling exiting threads.
2394 CL-PPCRE's thread torture test now passes.
2395 * fixed arguably-a-bug: GC time proportional to number of threads in
2396 system even when most of them are idle
2397 * optimization: improved performance of BIT and SBIT on bit-vectors.
2398 * .fasl file incompatibility: The fasl file version number has
2399 been incremented because of changes associated with package locks.
2401 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2402 * minor incompatible change: the system no longer provides
2403 optimization hints (conditions which are TYPEP
2404 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2405 mode; these hints are still emitted when higher SPEED optimization
2407 * new contrib module: a sampling profiler (profiling by statistical
2408 sampling, rather than by instrumenting functions) is available as
2409 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2410 * the behaviour of the standard function ED is now customizeable by
2411 third parties through a hook variable: see ED's documentation
2412 string for information on the protocol.
2413 * the compiler no longer emits efficiency notes for (FUNCALL X)
2414 when the type of X is uncertain under default optimization
2416 * fixed bug 276: mutating a binding of a specialized parameter to a
2417 method to something that is not TYPEP the specializer is now
2419 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2420 exhibit the required behaviour on the x86 platform. (thanks to
2421 Peter van Eynde, Eric Marsden and Bruno Haible)
2422 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2423 even for difficult arguments. (reported by Peter Graves)
2424 * fixed bug 141a: the backquote printer now descends quoted
2426 * fixed another bug in backquote printing: no more destructive
2427 modification of the form's list structure. (reported by Brian
2429 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2430 move between its address being taken and the call to
2431 interrupt_thread, fixing a crashing race condition.
2432 * the SB-POSIX contrib implementation has been adjusted so that it
2433 no longer exhibits ridiculously poor performance when constructing
2434 instances corresponding to C structs.
2436 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2437 * minor incompatible change: the sb-grovel contrib now treats C
2438 structures as alien (in the sense of SB-ALIEN) objects rather than
2439 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2440 has implications for memory management of client code
2441 (sb-grovel-returned objects must now be manually managed) and for
2442 type safety (alien objects now have full types).
2443 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2444 used to control emission of compiler diagnostics, rather than the
2445 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2446 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2447 quality should be considered deprecated.
2448 * install.sh now installs the user manual as well
2449 * (not quite a new documentable feature, but worth considering in
2450 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2451 beginnings of a semantically meaningful condition hierarchy is
2452 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2454 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2455 designator as the defaults argument.
2456 * fixed bug: Displaced arrays whose displaced-to array has become
2457 too small now cause ARRAY-DIMENSION to signal an error, providing
2458 for safer bounds-checking. (reported by Bruno Haible)
2459 * fixed bug: DEFCLASS slot definitions with identical :READER and
2460 :WRITER names now signal a reasonable error. (reported by Thomas
2462 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2464 * fixed bug: Invalid slot specification errors now print correctly.
2465 (thanks to Zach Beane)
2466 * fixed bug 320: Shared to local slot value transfers in class
2467 redefinitions now happen corrently from superclasses as
2468 well. (reported by Bruno Haible)
2469 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2471 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2472 improper lists correctly. (reported by Bruno Haible)
2473 * fixed bug 313: source-transform for <fun-name> was erroneously
2474 applied to a call of a value of a variable with name <fun-name>.
2475 (reported by Antonio Menezes Leitao)
2476 * fixed bug 307: The obsolete instance protocol ensures that
2477 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2478 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2479 remove dead unknown-values globs from the middle of the stack.
2480 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2481 easier to resume long computations after using *BREAK-ON-SIGNALS*
2482 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2483 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2484 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2485 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2486 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2487 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2489 * fixed a (fairly theoretical) bug in string printing: if
2490 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2491 does not have array-element-type equal to the most general string
2493 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2494 function name. (thanks to Nikodemus Siivola)
2495 * fixed bug: compile-time format string checker failed on
2496 non-closed ~{. (reported by Thomas F Burdick)
2497 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2498 don't warn on legal loop code involving more than one aggregate
2499 boolean. (thanks to Nikodemus Siivola)
2500 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2501 in keyword position to MAKE-PACKAGE was not being reported as
2503 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2504 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2506 * fixed bugs 280 and 312: the checking for multiple definitions in a
2507 file is less likely to become confused by uses of inline
2509 * fixed bug: the #S reader macro performs the keyword coercion
2510 specified for slot names. (reported by Kalle Niemitalo)
2511 * fixed bug: lambda lists may contain symbols whose names start with
2512 & but are not lambda-list-keywords; their occurrence triggers a
2514 * fixed bug 321: define-method-combination argument lambda lists do
2515 not cause invalid code to be generated when &optional or &aux
2516 variables have default values. (reported by Bruno Haible)
2517 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2518 have CLOS classes; this appears also to have fixed reported
2519 instability in stack exhaustion detection.
2520 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2521 MUFFLE-WARNING when no associated restart is present is now
2523 * optimization: rearranged the expansion of various defining macros
2524 so that each expands into only one top-level form in a
2525 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2527 * optimization: used a previously little-used slot in symbols to
2528 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2530 * fixed some bugs revealed by Paul Dietz' test suite:
2531 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2533 ** Fixed an optimization bug related to inheritance of initforms
2534 from local to shared slots.
2535 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2536 ** CAST optimizer forgot to flush argument derived type.
2537 ** print/read consistency on floats is now orders of magnitude
2538 more likely. (thanks also to Bruno Haible for a similar report
2540 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2541 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2542 for objects of type REAL. Make it so.
2543 ** SXHASH is specified (infelicitously) to respect similarity,
2544 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2545 it so. (thanks to Markus Ziegler)
2546 ** on the Alpha, the compiler succeeds in compiling functions
2547 returning a known number of arguments greater than 63.
2548 ** fixed handling of invalid NIL arguments in keyword position
2550 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2552 ** provided a readably-printable representation for RANDOM-STATE
2554 ** ensured that pathnames, where they have a namestring, always
2555 print using #P"..." syntax.
2557 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2558 * Support for the forthcoming 2.0 version of the NetBSD kernel
2559 running on x86 hardware has been added. (thanks to Perry
2560 E. Metzger most immediately, and others for their past work)
2561 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2562 current release version; SBCL's OpenBSD support had been broken
2563 since about the time of OpenBSD's switch to ELF binary format.)
2564 * [placeholder for DX summary]
2565 ** user code with &REST lists declared dynamic-extent, under high
2566 speed or space and low safety and debug optimization policy.
2567 * The manual has been converted to Texinfo format and the debugger
2568 chapter from the cmucl manual has been added.
2569 * A facility has been added to extract documentation strings from
2570 sbcl and store them as Texinfo-formatted snippets for inclusion in
2571 the manual (via Texinfo's @include directive)
2572 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2573 the test case to Dave Roberts)
2574 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2575 pointers. (reported by Sean Ross)
2576 * bug fix: PROFILE output is printed nicely even for large numerical
2577 values. (thanks to Zach Beane)
2578 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2579 greater than 32 handle EOF correctly.
2580 * bug fix: on X86 an immediate argument of the IMUL instruction is
2581 correctly printed in disassembly. (thanks to Lutz Euler)
2582 * bug fix: class slots in redefined classes preserve their old
2583 values. (thanks to Bruno Haible and Nikodemus Siivola)
2584 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2585 succeeds. (reported by Marco Baringer)
2586 * fixed some bugs revealed by Paul Dietz' test suite:
2587 ** READ-SEQUENCE now works on ECHO-STREAMs.
2588 ** RATIONALIZE works more according to its specification. (thanks
2591 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2592 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2593 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2594 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2595 should matter to you only if you rebind the printer control
2596 variables and then find you want different bindings in the
2597 debugger than in the ordinary execution of your program.)
2598 * The runtime build system has been tweaked to support building
2599 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2600 assembler and linker. (thanks to Nikodemus Siivola)
2601 * Unbound, undefined, undeclared variables now trigger full
2602 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2603 more often programmer error than deliberate exploitation of undefined
2605 * optimization: the hash algorithm for strings has changed to one
2606 that is less vulnerable to spurious collisions. (thanks to Juho
2608 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2609 needless bounds checking. (thanks to Juho Snellman)
2610 * optimization: implemented multiplication as a modular
2611 (UNSIGNED-BYTE 32) operation on the PPC backend.
2612 * fixed some bugs revealed by Paul Dietz' test suite:
2613 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2615 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2616 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2617 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2619 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2621 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2623 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2624 their output stream on EOF from read.
2625 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2626 have been read to end-of-file.
2627 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2629 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2630 description of determination of which consecutive characters
2632 ** Printing the "Space" character with escaping on now yields "#\\ ",
2633 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2634 ** Reading floating-point numbers with *READ-BASE* set to a number
2635 less than 10 works correctly.
2636 ** Reading floating-point numbers with *READ-BASE* set to a number
2637 more than 10 works correctly.
2638 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2639 the readtable currently in effect.
2641 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2642 * minor incompatible change: parsing of namestrings on a physical
2643 (Unix) host has changed; numbers after the final #\. in a
2644 namestring are no longer interpreted as a version field. This is
2645 intented to be largely invisible to the user, except that the
2646 meaning of the namestring "*.*.*" has changed: it now refers to a
2647 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2648 should usually be replaced by
2649 (make-pathname :name :wild :type :wild :version :wild)
2650 with the added benefit that this is more likely to be portable.
2651 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2652 option to OPEN now signals an error if the file being opened
2653 exists; this may have an impact on existing code.
2654 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2655 signals received, on the PowerPC platforms (both Linux and
2656 Darwin). (thanks to Pierre Mai for pointing out the location of
2658 * several fixes on OS X: The system now builds and runs cleanly on
2659 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2660 (thanks to Brian Mastenbrook)
2661 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2662 second-resolution: integer multiples of 1/3600 between -24 and 24.
2663 (thanks to Vincent Arkesteijn)
2664 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2665 type when called with 1 argument; PEEK-CHAR checked type of
2666 PEEK-TYPE only after having read first character from a
2667 stream. (reported by Peter Graves)
2668 * bug fix: the garbage collector now has much better locality
2669 behaviour, and in particular no longer treats all memory as being
2670 exhausted when many small objects point to each other in a deeply
2672 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2673 recognized as being TYPEP their class.
2674 * bug fix: the PUSHNEW documentation string has been corrected.
2675 (thanks to Vincent Arkesteijn)
2676 * bug fix: defaulting of the value for the last of an atypically
2677 large number of multiple values being bound was not being
2678 performed correctly on the Alpha or PPC platforms
2679 * optimization: implemented multiplication as a modular
2680 (UNSIGNED-BYTE 32) operation on the x86 backend.
2681 * optimization: SEARCH on simple-base-strings can now be open-coded.
2682 (see also contrib/compiler-extras.lisp for inspiration for
2683 teaching the compiler about the Boyer-Moore algorithm).
2684 * value, returned by MAX (and MIN) called with several EQUALP, but
2685 not EQL, arguments now does not depend on compiler settings.
2686 * fixed some bugs revealed by Paul Dietz' test suite:
2687 ** in stack analysis liveness information is propagated from
2688 non-local entry points.
2689 ** pathwise CAST removing failed when the CAST node did not start
2691 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2692 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2694 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2695 host is already defined.
2696 ** RENAME-FILE works on streams instead of signalling an internal
2698 ** PEEK-CHAR uses the current readtable when determining whether
2699 or not a character is whitespace.
2700 ** MERGE-PATHNAMES handles the case when the pathname does not
2701 specify a name while the default-pathname specifies a version.
2702 ** Pathnames now stand a better chance of respecting print/read
2704 ** Attempting to use standardized file system operators with a
2705 pathname with invalid :DIRECTORY components signals a
2707 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2709 ** DIRECTORY on logical pathnames is more correct.
2710 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2711 signal a TYPE-ERROR if their argument is not a stream.
2712 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2713 designator argument does not designate a stream.
2714 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2715 examining the synonym.
2716 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2718 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2719 element-type larger than ([UN]SIGNED-BYTE 32).
2721 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2722 * When built with the :SB-FUTEX feature, threaded builds now take
2723 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2724 for faster/more reliable mutex and condition variable support.
2725 * Incompatible change (but one you probably shouldn't have been using
2726 anyway): the interface and code for arbitrating between multiple
2727 threads in the same user session has been redesigned.
2728 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2729 error when called without an explicit environment argument.
2730 (thanks to Nikodemus Siivola)
2731 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2732 confused about their position. (thanks to Adam Warner and Gerd
2734 * bug fix: Pretty printing backquoted forms with unquotations in the
2735 argument list position of various code constructs such as LAMBDA
2736 now works correctly. (reported by Paul Dietz)
2737 * bug fix: Pretty printing unquotations no longer loses all
2738 stream position information.
2739 * optimization: performance of string output streams is now less
2740 poor for multiple small sequence writes.
2741 * optimization: performance of CSUBTYPEP in the presence of complex
2742 expressions involving CONS and NOT many times has been improved.
2743 (reported by Paul Dietz)
2744 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2746 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2747 streams for the REPL, for the debugger, and so on. (thanks to
2749 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2750 * fixed some bugs revealed by Paul Dietz' test suite:
2751 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2752 is ignored if it is too small, rather than propagating through
2753 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2754 ** extremely complex negations of CONS types were not being
2755 sufficiently canonicalized, leading to inconsistencies in
2757 ** VALUES tranformer lost derived type.
2759 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2760 * fixed a bootstrapping bug: the build process no longer assumes
2761 that the various BOOLE-related constants have the same value in
2762 host and target lisps. (noted by Paul Dietz' test suite on an
2763 SBCL binary built from CLISP)
2764 * The system can now be dynamically linked on the MIPS platform,
2765 which enables dynamic loading of foreign code from Lisp. (thanks
2766 to Ralf Baechle for discussions on the MIPS ABI)
2767 * The system now records debugging information for its own source
2768 files in a filesystem-position-independent manner, relative to
2769 the "SYS" logical host.
2770 * fixed a compiler bug: MV-LET convertion did not check references
2771 to the "max args" entry point. (reported by Brian Downing)
2772 * tweaked disassembly notes to be less confident about proclaiming
2773 some instruction as an LRA. (thanks to Brian Downing)
2774 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2775 now each have their own history, command character, and other
2776 characteristics. (thanks to David Lichteblau)
2777 * fixed some bugs revealed by Paul Dietz' test suite:
2778 ** compiler failure in compiling LOGAND expressions including a
2780 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2781 shift greater than 32.
2782 ** FLUSH-DEST did not mark blocks for type check regeneration.
2783 ** HANDLER-CASE failed to accept declarations in handler clauses
2784 in some circumstances.
2786 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2787 * New code in contrib/sb-introspect (still probably not entirely
2788 stable yet) provides some support for smart Lisp development
2789 environments like SLIME.
2790 * The conditions signalled for errors occurring when loading .fasl
2791 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2792 in a way which should help ASDF recover gracefully.
2793 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2794 stuff has been cleaned up. If you code contrib/ stuff, this might
2795 affect you, and you can look at contrib/README, contrib/STANDARDS,
2796 and/or the 0.8.4.27 diff to check.
2797 * In full calls the compiler now does not generate checks for declared
2798 argument types for all arguments.
2799 * various threading fixes
2800 ** and some experimental patches which didn't make it into
2801 the main tree for this release, but which are shipped in
2802 contrib/experimental-thread.patch as a possible fix for some
2803 failures (deadlock, spinning...) in GC-intensive multithreaded
2805 * fixed PPC build problem (source code incompatibility of different
2806 library versions): added offsetof() hackery which attempts to divine
2807 where glibc maintainers put uc_mcontext today
2808 * fixed bug 282: compiler does not trust type assertions while passing
2809 arguments to a full call.
2810 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2811 &OPTIONAL VALUES type parameter.
2812 * fix bug 214: algorithm for noting rejected templates is now more
2813 similar to that of template seletion. (also reported by rydis on
2815 * fixed bug 141b: printing backquoted information readably and prettily
2816 inserts a space where necessary.
2817 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2818 (CHARACTER 10) are now reported as errors, rather than propagated
2819 as unknown types. (reported by piso on #lisp)
2820 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2821 with values NIL and :ERROR. (thanks to Milan Zamazal)
2822 * fixed bug 191c: CLOS now does proper keyword argument checking as
2823 described in CLHS 7.6.5 and 7.6.5.1.
2824 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2825 longer raise an error; further, using a list as a for-as-arithmetic
2826 counter now raises a meaningful error.
2827 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2828 now understood by sequence creation functions such as MAKE-SEQUENCE
2830 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2831 a STRING-INPUT-STREAM.
2832 * compiler enhancement: SIGNUM is now better able to derive the type
2834 * type declarations inside WITH-SLOTS are checked. (reported by
2836 * fixed some bugs revealed by Paul Dietz' test suite:
2837 ** incorrect optimization of TRUNCATE for a positive first
2838 argument and negative second.
2839 ** compiler failure in let-convertion during flushing dead code.
2840 ** compiler failure while deriving type of TRUNCATE on an
2841 interval, containing 0.
2842 ** ASH of a negative bignum by a negative bignum count now returns
2844 ** intersection of CONS types now canonicalizes properly, fixing
2845 inconsistencies in SUBTYPEP.
2847 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2848 * incompatible change: The --disable-debugger command line
2849 option now clobbers the debugger at a more fundamental
2850 level, by redefining #'INVOKE-DEBUGGER instead of by
2851 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2852 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2853 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2854 enter the debugger REPL and then suffer recursive errors
2855 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2856 while under the new system, BREAK in --disable-debugger mode
2857 terminates the system just as an unhandled error would.
2858 * fixed compiler performance when processing loops with a step >1;
2859 * bug fix: DOCUMENTATION now retrieves generic function
2860 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2861 support has been systematized, and now supports the methods
2862 specified by ANSI, along with a default method and a method for
2863 slot documentation. (reported by Nathan Froyd)
2864 * bug fix: effective methods associated with a generic function are
2865 no longer cached over a change of that generic function's method
2866 combination. (reported by Andreas Fuchs)
2867 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2868 names a non-existent directory. (thanks to Andreas Fuchs)
2869 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2870 the PPC platform, lead to stack corruption; this has been fixed.
2871 (reported by Rainer Joswig)
2872 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2873 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2874 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2875 arithmetic in general, is now much more reliable on the PPC
2877 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2878 platform now returns the right answer.
2879 * optimization: restored some effective method precomputation in
2880 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2881 precomputation is now tunable.
2882 * optimization: compiler-internal data structure use has been
2883 reviewed, and changes have been made that should improve the
2884 performance of the compiler by about 20%.
2885 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2886 simple-base-strings and simple-bit-vectors is improved.
2887 * optimization: the optimization of 32-bit logical and arithmetic
2888 functions introduced in version 0.8.3 on the x86 has been
2889 implemented on the mips, ppc and sparc platforms; an
2890 implementation of the same facility, but for 64-bit arithmetic,
2891 has been added for the alpha.
2892 * microoptimization: the compiler is better able to make use of the
2893 x86 LEA instruction for multiplication by constants.
2894 * bug fix: in some situations compiler did not report usage of
2895 generic arithmetic in (SPEED 3) policy.
2896 * bug 145b fix: compiler used wrong type specifier while converting
2897 MEMBER-types to numeric.
2898 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2900 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2901 index argument now works properly on the Alpha platform.
2902 * bug fix: floating point exception treatment on the Alpha platform
2904 * bug fix: FILE-POSITION works much better on string input and
2905 output streams. (thanks to Nikodemus Siivola)
2906 * bug fix: many threading/garbage collection symptoms sorted.
2907 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2908 might be pseudo-atomic.
2909 * internal change: Stopping for GC is now done with signals not
2910 ptrace. GC is now done in whichever thread wanted it, instead of
2912 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2914 * bug fix: result form in DO is not contained in the implicit
2916 * incompatible change: ICR structure is changed; the value part of
2917 CONTINUATION is now called LVAR; corresponding functions are
2918 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2919 * added type deriver for ISQRT (thanks to Robert E. Brown).
2920 * bug fix: better support for loading from the command line when an
2921 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2923 * fixed some bugs revealed by Paul Dietz' test suite:
2924 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2925 ** ROUND and FROUND now give the right answer when given very
2926 small float arguments.
2927 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2929 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2930 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2931 ** LCM should return a non-negative integer.
2932 ** PARSE-INTEGER returned the index of a terminator instead of the
2933 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2934 ** PARSE-INTEGER returned an incorrect index being applied to a
2936 ** LCM with two arguments of 0 returns 0 rather than signalling
2938 ** unsigned addition of a 32-bit constant with the high bit set no
2939 longer causes an internal compiler error on the x86.
2940 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2941 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2942 with negative last argument.
2943 ** byte specifiers with zero size and position no longer cause
2944 an error during type derivation.
2945 ** bignum multiplication on the Alpha platform now returns the
2947 * porting: The system now builds on SuSE AMD64, although it still
2948 generates a 32-bit binary.
2949 * .fasl file incompatibility: The fasl file version number has
2950 been incremented (because of the changes to internal compiler
2951 data structures referred to above).
2953 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2954 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2955 more accurately, on the Darwin kernel running on PowerPC hardware.
2956 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2957 * Compiler code deletion notes now signal a condition of type
2958 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2959 an associated MUFFLE-WARNING restart.
2960 * The compiler now performs limited argument count validation of
2961 constant format strings in FORMAT, and where appropriate in ERROR,
2962 CERROR and WARN. (thanks to Gerd Moellmann)
2963 * New ASDF-INSTALL contrib can be used for automatic download and
2964 installation of third-party Lisp code from CCLAN or other sites
2966 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2967 which forces another thread to execute a function supplied by the
2969 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2970 now accept and act upon their :ELEMENT-TYPE keyword argument.
2971 (reported by Martin Atzmueller, Edi Weitz)
2972 * bug fix: FILE-POSITION now accepts position designators up to
2973 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2974 is the greater. (thanks to Patrik Nordebo)
2975 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2976 Kalle Olavi Niemitalo)
2977 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2978 printable. (reported by Eric Marsden)
2979 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2980 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2981 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2982 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2983 (thanks to Stig Sandoe)
2984 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2985 UNREAD-CHAR now correctly includes the unread character in the
2986 target sequence. (thanks to Gerd Moellmann)
2987 * bug fix in threaded builds: the system can now be suspended and
2988 resumed by shell job control with minimal disruption.
2989 * bug fixes in times and timezones >2038AD
2990 * better handling of "where is GNU make?" problem in build scripts
2991 (thanks to Nikodemus Siivola)
2992 * new optimization: inside a named function any reference to a
2993 function with the same name is considered to be a self-reference;
2994 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2995 optimization quality.
2996 * new optimization on x86: logical functions and + now have
2997 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2998 used when the result is truncated to 32 bits.
2999 * VALUES declaration is partially enabled.
3000 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3001 * fixed some bugs revealed by Paul Dietz' test suite:
3002 ** The system now obeys the constraint imposed by
3003 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3004 types form a lattice under type intersection.
3005 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3006 ** ASSOC now ignores NIL elements in an alist.
3007 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3008 and (1+ MOST-POSITIVE-FIXNUM) answers.
3009 ** The addition of a method with invalid qualifiers to a generic
3010 function does not cause an error to be signalled immediately;
3011 a warning is signalled, and the error is generated only on
3012 calling the generic function.
3013 * changed .fasl file version number, in part to add type codes for
3014 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3015 obscure ANSI requirements
3017 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3018 * fixed bug 148: failure to inline-expand a local function left
3019 garbage, confusing the compiler.
3020 * fixed bugs 3cd: structure slot readers perform type check if the
3021 slot can have an invalid value (i.e. it is either not initialized
3022 or can be written with a less specific slot writer).
3023 * bug fix: the compiler now traps array references to elements off
3024 the end of an array; previously, the bounds checking in some
3025 circumstances could go off-by-one.
3026 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3028 * type declarations for array element types now obey the description
3029 on the CLHS page "Declaration TYPE", as per discussions on
3030 sbcl-help around 2003-05-08. This means that a declaration
3031 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3032 declaration, all references to BAR will be asserted or assumed
3033 (with THE, so dependent on compiler policy) to involve objects of
3034 type FOO. Note that no such declaration is implied in
3035 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3036 * declared types of functions from the "Conditions"
3037 chapter. (reported by Paul Dietz)
3038 * bug fix: CERROR accepts a function as its first argument.
3039 * bug fix: NTH an NTHCDR accept a bignum as index
3040 arguments. (reported by Adam Warner)
3041 * optimization: character compare routines now optimize comparing
3042 against a constant character. (reported by Gilbert Baumann)
3043 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3044 argument now works properly on the MIPS platform.
3045 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3046 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3047 declared to have a functional type, does not cause an error
3049 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3050 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3051 * fixed bug: if last continuation of a deleted block has a
3052 destination, this destination should be deleted too. (reported by
3054 * fixed a bug in the bootstrap process: the host compiler's values
3055 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3056 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3057 test case from Patrik Nordebo)
3058 * improved the ability of the disassembler on the PPC platform to
3059 provide helpful disassembly notes.
3060 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3061 the class in more cases than previously.
3062 * bug fix: FILE-POSITION now understands :START and :END for
3063 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3064 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3065 8) data. (thanks to David Lichteblau)
3066 * bug fix: it is possible to add a method to a generic function
3067 without lambda list.
3068 * bug fix: reader failed to signal END-OF-FILE inside an
3069 object representation. (reported by Nikodemus Siivola)
3070 * fixed some bugs revealed by Paul Dietz' test suite:
3071 ** LAST and [N]BUTLAST should accept a bignum.
3072 ** condition slot accessors are methods.
3073 ** (VECTOR NIL) is a subtype of STRING.
3075 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3076 * minor incompatible change: some nonsensical specialized lambda
3077 lists (used in DEFMETHOD) which were previously ignored now signal
3079 * minor incompatible change: the system is now aware of the types of
3080 variables in the COMMON-LISP package, and will signal errors for
3081 most violations of these type constraints (where previously they
3082 were silently accepted).
3083 * minor incompatible change: COMPILE-FILE now uses the freedom
3084 afforded (ANSI 3.2.2.3) to use derived function types for
3085 functions defined in the same file. This also permits the system
3086 to warn on static type mismatches and function
3087 redefinition. (Currently it does not work with high DEBUG level.)
3088 * minor incompatible change: VALUES declaration is disabled.
3089 * When issuing notes, the compiler now signals a condition of type
3090 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3091 restart for use in user handlers. It is expected that the
3092 COMPILER-NOTE condition will eventually become a condition
3093 supertype to a hierarchy of note types, which will then be
3094 handleable in a similar fashion. However, at the moment, no such
3095 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3096 but it's an implementation detail, not a classification for the
3098 * Changes in type checking closed the following bugs:
3099 ** type checking of unused values (192b, 194d, 203);
3100 ** template selection based on unsafe type assertions (192c, 236);
3101 ** type checking in branches (194bc).
3102 * A short form of VALUES type specifier has ANSI meaning (it has
3103 increased the number of situations when SBCL cannot perform type
3105 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3106 keywords or constants is permissible.
3107 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3108 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3109 classes. (thanks to Antonio Martinez)
3110 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3111 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3112 argument to a pretty-print stream. Instead, it leaves any such
3113 operations to DESCRIBE-OBJECT methods.
3114 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3116 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3117 lambda lists. (thanks to David Lichteblau)
3118 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3119 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3120 (thanks to Gerd Moellmann)
3121 * fixed bug 246: increased compilation speed of long
3122 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3124 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3126 * DEFCONSTANT now throws a condition of type
3127 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3128 constant to a non-EQL value; CONTINUE and ABORT restarts
3129 respectively change and preserve the value.
3130 * fixed bug 63: The code walker, part of the implementation of CLOS,
3131 is now better at handling symbol macros.
3132 * bug fix: There is no longer an internal implementation type named
3133 CL:LENGTH. (reported by Raymond Toy)
3134 * bug fix: In macro-like defining macros/special operators the
3135 implicit block does not enclose the lambda list.
3136 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3137 enclosed in parentheses) are not suitable as type specifiers, and
3138 their use properly signals an error now.
3139 * bug fix: An argument count mismatch for a type specifier in code
3140 being compiled no longer causes an unhandled error at compile
3141 time, but signals a compile-time warning.
3142 * fixed simple vector readable printing
3143 * bug fix: DESCRIBE takes more care over whether the class
3144 precedence list slot of a class is bound before accessing it.
3145 (reported by Markus Krummenacker)
3146 * bug fix: FORMATTER can successfully compile pretty-printer format
3147 strings which use variants of the ~* directive inside.
3148 * bug fix: SEARCH now applies its TEST predicate to the elements of
3149 the arguments in the correct order. (thanks to Wolfhard Buss)
3150 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3151 in type inference. (thanks to Robert E. Brown)
3152 * bug fix: Reading in symbols with an explicit package name of ""
3153 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3154 * fixed some bugs revealed by Paul Dietz' test suite:
3155 ** NIL is now allowed as a structure slot name.
3156 ** Arbitrary numbers, not just REALs, are allowed in certain
3157 circumstances in LOOP for-as-arithmetic clauses.
3158 ** Multiple class redefinitions before slot access no longer
3159 causes a type error.
3160 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3161 association between the name and a class.
3162 ** Generic functions with non-standard method-combination and over
3163 five methods all of which return constants no longer return NIL
3164 after the first few invocations. (thanks to Gerd Moellmann)
3165 ** CALL-NEXT-METHOD with no arguments now passes the original
3166 values of the arguments, even in the presence of assignment.
3167 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3169 ** DISASSEMBLE works with closures and funcallable instances.
3170 ** ADD-METHOD now returns the generic function, not the new method.
3171 ** FIND-METHOD signals an error if the lengths of the specializers
3172 is incompatible with the generic function, even if the ERRORP
3174 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3175 which its argument is a member.
3176 ** DEFCLASS only redefines the class named by its class-name
3177 argument if that name is the proper name of the class;
3178 otherwise, it creates a new class.
3179 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3180 of the UNBOUND-SLOT condition to the name of the slot.
3181 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3182 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3183 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3184 SLOT-MAKUNBOUND in the specified fashion.
3186 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3187 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3188 cross-compilation host. As a consequence, we can now bootstrap our
3189 way up to SBCL starting with a bare gcc toolchain and human-readable
3190 source code (first the source to CLISP, then the source to SBCL).
3191 * A contributed module containing a partial implementation of the
3192 simple-streams interface has been included. (thanks to Rudi
3194 * A contributed module implementing the RFC1321 Message Digest
3195 Algorithm, known as MD5, has been included.
3196 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3197 no longer has any effect, as the code controlled by this feature
3198 has been deleted. (As far as we know, no-one has ever built using
3199 this feature, and its semantics were confused in any case).
3200 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3201 work on conditions (as required by the ANSI specification),
3202 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3203 expected behaviour on conditions. Users should note, however,
3204 that such behaviour is not required by the ANSI specification,
3205 and so use of this behaviour may render their code unportable.
3206 * fixed some bugs revealed by Paul Dietz' test suite:
3207 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3209 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3210 ** SXHASH on condition objects no longer returns NIL.
3211 ** :ALLOCATION :CLASS slots are better treated; their values are
3212 updated on class redefinition, and initforms inherited from
3213 superclasses are applied.
3214 ** REMOVE-METHOD returns its generic function argument even when
3215 no method was removed.
3216 ** SHARED-INITIALIZE now initializes the values of the requested
3217 slots, including those with :ALLOCATION :CLASS.
3218 ** ALLOCATE-INSTANCE now works on structure classes defined via
3219 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3221 ** SLOT-EXISTS-P now works on conditions, as well as structures
3223 ** MAKE-LOAD-FORM now has the required methods on
3224 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3225 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3226 keyword, and now implements the SLOT-NAMES argument.
3227 ** methods with &OPTIONAL arguments no longer allow too many
3228 arguments to be passed in the call without error.
3229 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3230 option is consistent with the required arguments of the generic
3231 function lambda list.
3232 * bug fix: REQUIRE accepts a string designator. (Thanks to
3234 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3235 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3236 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3237 * bug fix: The compiler now checks for duplicated variables in macro
3239 * bug fix: SETQ on globals returns the correct value.
3240 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3241 not a COMPILER-ERROR (followed by some other strange error on
3242 choosing the CONTINUE restart).
3243 * bug fix: make.sh and friends are now more consistent in the way that
3244 they look for GNU "make".
3246 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3247 * experimental native threads support (on x86 Linux >=2.4 only).
3248 This is not compiled in by default: you need to add :SB-THREAD to
3249 the target features. See the "Beyond ANSI" chapter of the manual
3251 * fix for longstanding nonANSIism: The old distinction between
3252 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3253 The return value from CL:FIND-CLASS is now a CLOS class, and
3254 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3255 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3256 * An interface to the MetaObject Protocol, as described in Kiczales,
3257 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3258 MIT Press, 1991, is available from the SB-MOP package.
3259 * incompatible change: the SB-PCL package should now be considered
3260 a private implementation detail, and no longer a semi-private MOP
3262 * minor incompatible change: due to rearrangement for threads, the
3263 control stack and binding stack are now allocated at arbitrary
3264 addresses instead of being hardcoded per-port. Users affected by
3265 this probably have to be doing advanced things with shared
3266 libraries, and will know who they are.
3267 * minor incompatible change: Previously, all --eval forms used were
3268 processed with READ before any of them were processed with EVAL.
3269 Now each --eval form is processed with both READ and EVAL before
3270 the next --eval form is processed. (Thus package operations like
3271 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3272 work as the user might reasonably expect.)
3273 * minor incompatible change: *STANDARD-INPUT* is now only an
3274 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3276 * minor incompatible change: Y-OR-N-P is now character-oriented,
3277 not line oriented. Also, YES-OR-NO-P now works without errors.
3278 (thanks to Antonio Martinez)
3279 * sb-aclrepl module improvements: an integrated inspector, added
3280 repl features, and a bug fix to :trace command.
3281 * Known functions, which cannot be open coded by the backend, are
3282 considered to be able to check types of their arguments. (fixing
3283 a bug report by Nathan J. Froyd)
3284 * fixed a bug in computing method discriminating functions: It is
3285 now possible to define methods specialized on classes which have
3286 forward-referenced superclasses. (thanks to Gerd Moellmann)
3287 * fixed evaluation order in optional entries (reported by Gilbert
3289 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3290 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3291 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3292 required-by-AMOP NAME argument, as well as CLASS and
3293 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3294 * fixed bug 20: DEFMETHOD can define methods using names that are
3295 not the proper names of classes to designate class specializers.
3296 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3297 Unix file descriptors, instead of blowing up. (thanks to Antonio
3299 * Garbage collection refactoring: user-visible change is that a
3300 call to the GC function during WITHOUT-GCING will not do garbage
3301 collection until the end of the WITHOUT-GCING. If you were doing
3302 this you were probably losing anyway.
3303 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3304 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3305 TYPEP the latter but not the former.
3306 * The compiler issues a full WARNING for calls to undefined functions
3307 with names from the CL package.
3308 * MAP-INTO for a vector destination is open coded. (reported by
3309 Brian Downing on c.l.l)
3310 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3311 documentation string.
3312 * fixed some bugs revealed by Paul Dietz' test suite:
3313 ** COPY-ALIST now signals an error if its argument is a dotted
3315 ** Condition slots are now accessed more correctly in the presence
3316 of multiple initargs for a given slot.
3317 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3318 exclude restarts of the same name associated with a different
3320 ** DEFCLASS of forward-referenced classes with another
3321 forward-referenced class in the superclasses list no longer
3323 ** Condition slots are now initialized once each, not multiple
3324 times. (thanks to Gerd Moellmann)
3325 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3327 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3328 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3329 arguments contain duplicated elements.
3330 ** RESTART-CASE understands local macros.
3331 ** RESTART-CASE associates exactly its own restarts with a condition.
3332 ** ENDP in safe mode checks its argument to be of type LIST.
3333 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3334 in question is unbound.
3335 ** Optimized MAKE-INSTANCE functions no longer cause internal
3336 assertion failures in the presence of duplicate initargs.
3337 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3338 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3339 propagated even in the ctor optimized implementation of
3341 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3343 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3344 * a better implementation of SXHASH on (simple) bit vectors,
3345 measured both in execution speed and in distribution of results
3346 over the positive fixnums, has been installed. Likewise, a better
3347 implementation of EQUAL for simple bit vectors is now available.
3348 * fixed CEILING optimization for a divisor of form 2^k.
3349 * fixed bug 240 (emitting extra style warnings "using the lexical
3350 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3351 by Antonio Martinez)
3352 * fixed SXHASH, giving different results for NIL depending on type
3353 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3354 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3355 variable. (found by Rolf Wester)
3356 * SBCL does not ignore type declarations for special
3357 variables. (reported by rif on c.l.l 2003-03-05)
3358 * some bug fixes in contrib/sb-aclrepl/
3359 * fixed some bugs revealed by Paul Dietz' test suite:
3360 ** a bug in the CONS type specifier, whereby the CAR and CDR
3361 types got intertwined, has been fixed;
3362 ** the type system is now able to reason about the interaction
3363 between INTEGER and RATIO types more completely;
3364 ** APPEND, [N]REVERSE and NRECONC check that those their
3365 arguments, which must be proper lists, are really so;
3366 ** An array specialized to be unable to hold elements has been
3367 implemented, as required -- yes, really -- by ANSI;
3368 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3369 on malformed property lists;
3371 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3372 * incompatible packaging change: in line with Unix convention,
3373 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3374 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3375 * REQUIRE and PROVIDE are now optionally capable of doing something
3376 useful. See the documentation string for REQUIRE.
3377 * infrastructure for a managed SBCL contrib system: contributed
3378 modules in this release include:
3379 ** the ASDF system definition facility;
3380 ** an interface to the BSD Sockets API;
3381 ** an ACL-like convenience interface to the repl;
3382 (thanks to Kevin Rosenberg)
3383 ** an implementation of ROTATE-BYTE, with efficient implementation
3385 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3386 gives a closer approximation to the right answer than previously.
3387 (thanks to Raymond Toy)
3388 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3389 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3390 optional environment arguments, as required by ANSI.
3391 * fixed bugs in other functions taking environment objects, allowing
3392 calls with an explicit NIL environment argument to be compiled
3394 * fixed bug 228: primary return values from
3395 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3396 COMPILE or FUNCTION.
3397 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3398 :TYPE will no longer signal errors on innocuous objects.
3399 * fixed bug 231b: SETQ is better at respecting type declarations in
3400 the lexical environment.
3401 * fixed a bug in DEFCLASS: classes named by symbols with no or
3402 unprintable packages can now be defined.
3403 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3404 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3405 * fixed compiler failure related to checking types of functions.
3406 (reported by Robert E. Brown)
3407 * the compiler is now much more consistent in its error-checking
3408 treatment of bounding index arguments to sequence functions: in
3409 (SAFETY 3) code, errors will be signalled in almost all cases if
3410 invalid sequence bounding indices are passed to functions defined
3411 by ANSI to operate on sequences.
3412 * fixed a bug in the build procedure: documentation of SBCL-specific
3413 packages is now preserved and available in the final Lisp image.
3414 * lifted FDEFINITION lookup out of loops in the implementation of
3415 many list operations. (thanks to Robert E. Brown)
3416 * fixed a bug in the reader: the #n# reader macro now works for
3417 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3418 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3419 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3420 E. Brown and Tony Martinez respectively)
3421 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3422 SLOT-BOUNDP: in particular, it is now able to optimize them much
3423 better, and is now not vulnerable to having packages renamed.
3424 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3425 always called when a slot is not present in an instance. (thanks
3427 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3428 longer signal an error on unreading a character following EOF on
3429 the previous constituent stream. (thanks to Tony Martinez)
3430 * fixed some bugs revealed by Paul Dietz' test suite:
3431 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3432 not just nonnegative fixnums;
3433 ** the logical bit-array operators such as BIT-AND now accept an
3434 explicit NIL for their "opt-arg" argument (to indicate a
3435 freshly-consed result bit-array);
3436 ** ELT now signals an error on an invalid sequence index in safe
3438 ** the type system is now cleverer about negations of numeric
3439 types, and consequently understands the BIGNUM and RATIO types
3441 ** the type system is now cleverer about the interaction between
3442 INTEGER and RATIO types: while bugs still remain, many more
3443 cases are accurately computed;
3444 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3445 if it is in the last clause;
3446 ** CONSTANTLY now correctly returns a side-effect-free function in
3448 ** DECLARE is no longer treated as a special-operator; in
3449 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3450 * incremented fasl file version number due to the change in the
3451 DEFSTRUCT-SLOT-DESCRIPTION structure.
3453 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3454 * minor incompatible change: code processed by the "interpreter" or
3455 EVAL now has a compilation optimization policy of (DEBUG 2)
3456 (changed from (DEBUG 1)) to improve debuggability of interactive
3457 development, and to allow the use of the debug RETURN command in
3459 * an experimental implementation of the RETURN command for the
3460 debugger has been included. (thanks to Frederik Kuivinen)
3461 * fixed bug 62: constraints were not propagated into a loop.
3462 * fixed bug in embedded calls of SORT (reported and investigated by
3464 * fixed some bugs revealed by Paul Dietz' test suite:
3465 ** printing and reading of arrays with some dimensions having
3466 length 0 (thanks to Gerd Moellmann);
3467 ** BOA constructor with &AUX argument without a default value does
3468 not cause a type error;
3469 ** CONSTANTP now returns true for all self-evaluating objects.
3471 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3472 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3473 accessors that are related by inheritance, as specified in the
3474 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3475 Valtteri Vuorikoski)
3476 * The compiler is now able to inline functions that were defined in
3477 a complex lexical environment (e.g. inside a MACROLET).
3478 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3480 * Support for the upcoming FreeBSD-5.0 release has been included.
3481 (thanks to Dag-Erling Smorgrav)
3482 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3483 effect when it is not in a toplevel context.
3484 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3485 stand a better chance of being correct. (thanks to Gerd
3487 * fixed bug in COERCE, which now signals an error on coercing a
3488 rational to a bounded real type which excludes the expected
3490 * The compiler is now able to derive types more accurately from the
3491 COERCE and COMPILE functions.
3492 * fixed bug 223: functional binding is considered to be constant
3493 only for symbols in the CL package.
3494 * fixed bug 231: SETQ did not check the type of a variable being set
3495 (reported by Robert E. Brown)
3496 * A new optimization for MAKE-INSTANCE has been included, fixing
3497 various bugs (including relating to :ALLOCATION :CLASS slots and
3498 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3500 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3501 ** As required by ANSI, LOOP now disallows anonymous collection
3502 clauses such as COLLECT I in conjunction with aggregate boolean
3503 clauses such as THEREIS (= I 1);
3504 ** LOOP now signals an error when any variable is reused in the
3505 same loop (including the potentially useful construct analogous
3506 to WITH A = 1 WITH A = (1+ A);
3507 ** IT is only a special loop symbol within the first clause of a
3508 conditional loop clause;
3509 ** LOOP with a typed iteration variable over a hashtable now
3510 signals a type error iff it should.
3511 * fixed some other bugs revealed by Paul Dietz' test suite:
3512 ** FILE-STREAM now names the class previously known as FD-STREAM;
3513 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3514 argument) no longer signals an error;
3515 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3516 of the slot symbol, rather than using the current package
3517 ((:CONC-NAME "") continues to intern the slot's name in the
3519 * incremented fasl file version number, because of the incompatible
3520 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3521 of the new implementation of DEFINE-COMPILER-MACRO.
3523 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3524 * Support for building SBCL for MIPS platforms running in
3525 little-endian mode has now been checked in, and basic
3526 functionality on said platforms verified.
3527 * minor incompatible change: PCL now records the pathname of a file
3528 in which methods and the like are defined, rather than its
3530 * minor incompatible change: TRUENAME now considers the truename of
3531 a file naming a directory to be the pathname with :DIRECTORY
3532 component indicating that directory.
3533 * minor incompatible change: a NAMED clause in the extended form of
3534 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3535 reason for the previous behaviour is unclear.
3536 * more systematization and improvement of CLOS and MOP conformance
3537 in PCL (thanks to Gerd Moellman and Pierre Mai):
3538 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3540 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3541 primary methods with no specializers;
3542 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3544 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3545 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3546 FORWARD-REFERENCED-CLASSes; error reporting on
3547 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3549 ** SXHASH on CLOS instances now uses a slot internal to the
3550 instance to return different numbers on distinct instances,
3551 while preserving the same return value through invocations of
3553 ** DEFMETHOD signals errors when methods with longer incongruent
3554 lambda lists are added to generic functions;
3555 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3556 CLASS, as specified in AMOP;
3557 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3558 on the order returned by the primary method for classes of
3559 class STANDARD-CLASS;
3560 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3561 * fixed some bugs shown by Paul Dietz' test suite:
3562 ** DOLIST puts its body in TAGBODY;
3563 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3565 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3566 value producing form;
3567 ** if more variables are given to PROGV than values, extra
3568 variables are bound and made to have no value;
3569 ** NSUBSTITUTE on list arguments gets the right answer with
3571 ** ELT signals an error of type TYPE-ERROR when the index argument
3572 is not a valid sequence index;
3573 ** LOOP signals (at macroexpansion time) an error of type
3574 PROGRAM-ERROR when duplicate variable names are found;
3575 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3576 ** FUNCALL of special-operators now cause an error of type
3578 ** PSETQ now works as required in the presence of side-effecting
3579 symbol-macro places;
3580 ** NCONC accepts any object as its last argument;
3581 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3583 ** loop-for-as-package does not require a package to be explicitely
3585 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3587 * fixed bug 166: compiler preserves "there is a way to go"
3588 invariant when deleting code.
3589 * fixed bug 172: macro lambda lists with required arguments after
3590 &REST arguments now cause an error to be signalled. (thanks to
3592 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3593 bug. (thanks to Matthew Danish)
3594 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3596 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3597 arguments are lexically rebound. (thanks to Gerd Moellmann and
3599 * fixed bug 194: error messages are now more informative when there
3600 is no primary method applicable in a call to a generic
3601 function. (thanks to Gerd Moellmann)
3602 * fixed bug in command line argument checking (thanks to Julian
3604 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3605 (thanks to Matthew Danish)
3606 * incremented fasl file version number, because of the
3607 SXHASH-related changes in the layout of CLOS data structures
3609 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3610 * minor incompatible change: The runtime (the Unix executable named
3611 "sbcl") is now much pickier about the .core files it will load.
3612 Essentially it now requires .core files to descend from the same
3613 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3614 as the runtime does. (The intent is to prevent the crashes which
3615 can occur, and which can even be reported as mysterious failures,
3616 when people patch the sources or change the build parameters
3617 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3618 sbcl and .core files.)
3619 * fixed bug: VALUES-LIST is no longer optimized away.
3620 * fixed bug 142: The FFI conversion of C string values to Lisp
3621 string values no longer conses excessively. (thanks to Nathan
3622 Froyd porting Raymond Toy's fix to CMU CL)
3623 * began to systematize and improve MOP conformance in PCL (thanks to
3624 Nathan Froyd, Gerd Moellman and Pierre Mai):
3625 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3627 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3628 ** FINALIZE-INHERITANCE is now called on class finalization;
3629 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3630 argument precedence order.
3631 * fixed bug 202: The compiler no longer fails on functions whose
3632 derived types contradict their declared type.
3633 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3634 so it can be non-toplevel.
3635 * The fasl file version number has changed (because of the new
3636 implementation of DEFMACRO).
3637 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3638 safe code, that any length requirement by their type-specifier
3639 argument is valid. The exceptions to this are described in bug
3641 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3642 functions now check the types of their inputs as required by ANSI.
3643 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3644 introduced symbol is DECLAREd to be SPECIAL.
3645 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3646 * fixed bug: :COUNT argument to sequence functions may be negative
3647 * fixed bug: body of DO-SYMBOLS may contain declarations
3648 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3649 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3650 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3651 symbol macro only once
3652 * fixed printing of call frame when argument list is unavailable
3653 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3654 * compiler no longer signals WARNING on unknown keyword
3657 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3658 * A beta-quality port to the mips architecture running Linux,
3659 based on the old CMUCL backend, has been made. It has been tested
3660 on a big-endian kernel, and works sufficiently well to be able to
3661 rebuild itself; it has not been tested in little-endian mode.
3662 * fixed an inconsistency between gencgc.c and purify.c which made
3663 dumping/loading .core files unreliable
3664 * fixed bug 120a: The compiler now deals correctly with IFs where
3665 the consequent is the same as the alternative, instead of
3666 misderiving the return type. (thanks to Alexey Dejneka)
3667 * fixed bug 113: Logical pathnames are now dumpable (the logical
3668 host is resolved at load-time, throwing an error if it is not
3670 * fixed bug 174: FORMAT's error message is slightly clearer when a
3671 non-printing character is used in a format directive.
3672 * fixed several bugs in compiler checking of type declarations, i.e.
3673 violations of the Python "declarations are assertions" principle
3674 (thanks to Alexey Dejneka)
3675 * fixed several bugs in PCL's error checking (thanks to Gerd
3677 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3679 * fixed bug in compilation of functions as first class values
3680 (thanks to Antonio Martinez-Shotton)
3681 * The compiler's handling TYPE-ERRORs which it can prove will
3682 inevitably happen at runtime has been cleaned up and corrected
3683 in several ways. (thanks to Alexey Dejneka)
3684 * improved argument type checking for various basic arithmetic
3685 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3686 lavished on them in the past that they can be compiled in many
3687 ways in different special cases
3688 * fixed bug 181: compiler checks validity of user supplied type
3690 * cleaned up code flushing in optimization: Function calls which
3691 should signal errors for safety purposes (e.g. which ANSI says
3692 should signal errors when their arguments are of incorrect type)
3693 are no longer optimized away.
3694 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3695 * incremented fasl file version number, because changes in the
3696 implementation of sequence functions like COERCE caused
3697 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3698 in old inline expansions) to become undefined. (Actually these
3699 changes were later undone, so we might very well be binary
3700 compatible with 0.7.7 after all, but leaving the version number
3701 incremented seemed like the simplest and most conservative
3704 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3705 * An alpha-quality port to the parisc architecture running Linux,
3706 based on the old CMUCL backend, has been made. This, even more so
3707 than the other backends, should be considered still a work in
3708 progress; known problems include that the Linux kernel in 64-bit
3709 mode does not propagate the correct sigcontext structure to
3710 userspace, and consequently SBCL on a parisc64 kernel will not
3712 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3713 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3714 suppressed.) Also now that the compiler is looking at declarations
3715 in the environment, it checks optimization declarations as well,
3716 and suppresses inlining when (> DEBUG SPEED).
3717 * More fixes have been made to treatment of floating point exception
3718 treatment and other Unix signals. In particular, floating point
3719 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3720 * The detection and handling of control stack exhaustion (infinite
3721 or very deeply nested recursion) has changed. Stack exhaustion
3722 detection is now done by write-protecting pages at the OS level
3723 and applies at all optimization settings; when found, a
3724 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3725 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3726 be caught using IGNORE-ERRORS.
3727 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3728 correctly when transforming recursive LABELS functions to LETs.
3729 (thanks to Alexey Dejneka)
3730 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3731 that are names of constants or global variables.
3732 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3733 alien routines with docstrings.
3734 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3735 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3737 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3738 (thanks to Eric Marsden)
3739 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3740 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3741 * Bug fix: The SPARC backend can now compile functions involving
3742 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3743 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3744 to a functions expecting a PATHNAME-DESIGNATOR.
3745 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3746 lambda lists. (thanks to Alexey Dejneka)
3747 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3748 functions so that EXPORTing the name of the class doesn't cause
3749 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3750 to Antonio Martinez for reporting this)
3751 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3752 constant-folded without failing an assertion. (thanks to Einar
3753 Floystad Dorum for reporting this)
3754 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3755 types are now dealt with more correctly by the compiler.
3756 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3757 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3758 behaviour analogous to RENAME-FILE. This puts its behaviour more
3759 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3761 * The fasl file version number has changed again. (because of the
3762 bug fix involving the names of PCL MAKE-INSTANCE functions)
3764 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3765 * bug fix: Floating point exceptions are treated much more
3766 consistently on the x86/Linux and PPC/Linux platforms.
3767 * Array initialization with :INITIAL-ELEMENT is now much faster for
3768 cases when the compiler cannot open code the array creation, but
3769 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3770 array accesses have also seen a speed increase.
3771 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3772 specified. (This was at the root of some bad interactions between
3773 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3775 * bug fix: Internal error arguments for undefined functions are now
3776 computed correctly on the PPC/Linux platform.
3777 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3778 Raymond Toy's patch for CMU CL)
3779 * Support for the Solaris 9 operating environment has been included
3780 (thanks to Daniel Merritt)
3781 * A very ugly but hopefully complete draft of the missing FFI chapter
3782 of the manual has been created by reformatting the corresponding
3783 CMU CL manual chapter into (currently very ugly and incoherent)
3784 DocBook and bringing it up to date for SBCL behavior. Thus, the
3785 manual is now essentially complete, at least by my extreme
3786 once-and-only-once standards, whereby it's acceptable to refer to
3787 the doc strings of SB-EXT functions as the primary documentation.
3788 * The fasl file version number has changed again, due to cleanup of
3789 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3790 is no longer a static symbol.)
3792 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3793 * SBCL now builds with OpenMCL (version 0.12) as the
3794 cross-compilation host; also, more progress has been made toward
3795 bootstrapping under CLISP.
3796 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3798 * bug 158 fixed: The compiler can now deal with integer loop
3799 increments different from 1; fixing this turned out also to fix
3801 * bug 169 fixed: no more bogus warnings about using lexical bindings
3802 despite the presence of perfectly good SPECIAL declarations (thanks
3803 to David Lichteblau)
3804 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3805 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3806 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3808 * bug 180 fixed: Method combination specifications no longer ignore
3809 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3810 * bug fix: Structure type predicate functions now check their argument
3811 count as they should.
3812 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3813 correctly. (thanks to Pierre Mai)
3814 * minor incompatible change: The --noprogrammer option is deprecated
3815 in favor of the new --disable-debugger option, which is very similar.
3816 (The major difference is that it takes effect at a slightly different
3817 time at startup, causing handling of errors in --sysinit and
3818 --userinit files will be affected differently.) The
3819 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3820 been added to allow this functionality to be controlled from ordinary
3821 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3822 maintainers, who might want to run non-interactive scripts to
3823 build SBCL cores which will later be used interactively.)
3824 * minor incompatible change: The LOAD function no longer, when given
3825 a wild pathname to load, loads all files matching that pathname.
3826 Instead, an error of type FILE-ERROR is signalled.
3828 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3829 * bug 147 fixed: The compiler preserves its block link/count
3830 invariants more correctly now so that it doesn't crash. (thanks
3832 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3834 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3835 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3836 no-value-for-this-character as NIL (as specified by ANSI).
3837 * HOST-NAMESTRING on physical pathnames now returns a string that is
3838 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3839 (thanks to Christophe Rhodes)
3840 * The Alpha port handles icache flushing more correctly. (thanks to
3842 * More progress has been made toward bootstrapping under CLISP. (thanks
3843 to Christophe Rhodes)
3844 * The fasl file format has changed again, because dynamic loading
3845 on OpenBSD (which has non-ELF object files) motivated some cleanups
3846 in the way that foreign symbols are transformed and passed around.
3847 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3848 is no longer treated as whitespace by the reader, but instead as
3849 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3850 |A
\7fB|, instead of A as it used to.
3852 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3853 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3854 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3855 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3856 this as of 0.7.1.45, but was left out of the previous news section
3857 (thanks to Dan Barlow)
3858 * SBCL now runs on the Solaris operating system on SPARC architectures
3859 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3860 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3861 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3862 * SPARC backend cleanups, allowing builds of cores optimized for V8
3863 and V9 SPARCS, and also emission of code targeted to a particular
3864 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3866 * SBCL is closer to bootstrapping under CLISP, thanks to various
3867 fixes by Christophe Rhodes.
3868 * The fasl file format has changed again, to allow the compiler's
3869 INFO database to support symbol macros.
3870 * The user manual (in doc/) is formatted into HTML more nicely.
3871 (thanks to coreythomas)
3872 * The system is smarter about SUBTYPEP relationships, especially
3873 those involving NOT types (including types such as ATOM which are
3874 represented internally using NOT types). Thus SUBTYPEP is less
3875 likely to return (VALUES NIL NIL) in general, and in particular
3876 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3878 * The fasl file format has changed again, because the internal
3879 representation of types now includes a new slot to support the new
3880 SUBTYPEP-of-NOT-types logic.
3881 * (not a change in the main branch of SBCL, but a related prototype
3882 which can hopefully be merged into the main branch of SBCL in the
3883 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3884 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3885 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3886 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3887 dispatch macro character combinations. (thanks to Alexey Dejneka)
3888 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3889 that superficially look like logical namestrings correctly.
3890 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3892 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3893 default supplied-p) for &optional and &key arguments. (thanks to
3896 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3897 * incompatible change: The compiler is now less aggressive about
3898 tail call optimization, doing it only when (> SPACE DEBUG) or
3899 (> SPEED DEBUG). (This is an incompatible change because there are
3900 programs which relied on the old CMU-CL-style behavior to optimize
3901 away their unbounded recursion which will now die of stack overflow.)
3902 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3903 for non-GENCGC systems has been increased to 20M (since that
3904 seems much closer to the likely performance optimum for modern
3905 systems than the old 4M value was)
3906 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3907 and *DEBUG-PRINT-LEVEL*
3908 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3909 of CMU CL's support for SPARC, and various endianness and other
3910 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3911 * new syntactic sugar for the Unix command line: --load foo.bar is now
3912 an alternate notation for --eval '(load "foo.bar")'.
3914 ** The system now detects stack overflow and handles it gracefully,
3915 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3916 optimization settings. (This is a good thing in general, and
3917 its introduction in this version should be particularly timely
3918 for anyone whose code fails because of suppression of tail
3920 ** The system now hunts for the C variable "environ" in a more
3921 devious way, to avoid segfaults when the C library version differs
3922 between compile time and run time. (thanks to Christophe Rhodes)
3923 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3924 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3925 ** The compiler no longer issues bogus style warnings for undefined
3926 classes in the same source file as the DEFCLASSes which defined
3927 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3929 ** fixes in CONDITION class precedence list for undefined function
3930 errors (thanks to Alexei Dejneka)
3931 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3932 correctly. (thanks to Dan Barlow)
3933 ** portability fixes aiming at bootstrapping under CLISP (thanks
3934 to Dave McDonald and Christophe Rhodes)
3935 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3936 ** fixes in type translation and and type inference (thanks to
3938 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3939 ** various fixes in the new ports (thanks to Dan Barlow)
3940 * several changes related to debugging:
3941 ** suppression of tail recursion, as noted above
3942 ** stack overflow detection, as noted above
3943 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3944 is now the default. (For some time encapsulation has been more
3945 reliable than the breakpoint-based :ENCAPSULATE NIL
3946 implementation, at least on X86 systems; and I just noticed that
3947 encapsulation also seems closer to the spirit of the ANSI
3950 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3952 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3953 up properly again. (There was a packaging bug in 0.7.0 which
3954 left their definitions in SB-SYS::LOAD-FOREIGN and
3955 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3956 vital for most things which interface to C-level interfaces,
3957 like extensions working with sockets or databases or
3958 Perl-compatible regexes or whatever, and the need to fix
3959 this bug is the main reason that 0.7.1 was released so
3961 ** DEFGENERIC is now choosier about the methods it redefines, so that
3962 reLOADing a previously-LOADed file containing DEFGENERICs does
3963 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3964 cycle now works as it should. (thanks to Alexey Dejneka)
3965 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3966 fixed by Christophe Rhodes. (He actually submitted this patch
3967 months ago, and I delayed until after 0.7.0.)
3968 ** Bug 111 (internal compiler confusion about runtime checks on
3969 FUNCTION types) was fixed by Alexey Dejneka.
3970 * Some internal cleanups (getting rid of variables which aren't
3971 needed now that the byte interpreter is gone) caused the fasl
3972 file format number to change again.
3974 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3975 * major incompatible change: The default fasl file extension, i.e. the
3976 default extension for files produced by COMPILE-FILE, has changed
3977 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3979 ** There are many changes in the implementation of the compiler.
3980 SBCL is now essentially a compiler-only implementation of ANSI
3981 Common Lisp. EVAL still "interprets" a few special cases, but
3982 almost all the interesting cases are handled by creating
3983 a LAMBDA expression, calling COMPILE on it, then calling
3984 FUNCALL on the result.
3985 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3986 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3987 Since the code is newer, there might still be some new bugs
3988 (though not as many as before Martin Atzmueller's fixes:-). But
3989 the new code is substantially simpler and clearer, and hopefully
3990 any remaining bugs will be simpler, less fundamental, and more
3991 fixable then the bugs in the old code.
3992 ** The revised compiler is still a little unsteady on its feet.
3994 *** The debugging information it produces (particularly the names
3995 of FUNCTION objects) is sometimes much less useful than what
3996 the old compiler produced.
3997 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3998 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3999 within a MACROLET) has been temporarily weakened.
4000 ** There are new compiler optimizations for various functions:
4001 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4002 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4003 *** the math functions TRUNCATE, FLOOR, and CEILING
4004 *** the function-of-all-trades COERCE
4005 Mostly these should be transparent, but there's one
4006 potentially-annoying problem (bug 117): when the compiler
4007 inline-expands a function and does type analysis on the result,
4008 it can create control paths which have type mismatches, and
4009 when it can't prove that those control paths aren't taken,
4010 it will issue WARNINGs about the type mismatches. This is
4011 a particular problem in practice for the new sequence functions.
4012 It's not clear how this should be fixed, and for now, a
4013 workaround is given in the entry for 117 in the BUGS file.
4014 ** (Because of the interaction between the two previous items --
4015 occasional inlining problems and new inline expansions -- some
4016 of the new sequence function optimizations won't really kick in
4017 completely until debugging information, and then inlining, are
4018 straightened out in some future version.)
4019 * minor incompatible changes:
4020 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4021 DIRECTORY no longer implicitly promotes NIL slots of its
4022 pathname argument to :WILD. In particular, when you ask for the
4023 contents of a directory (which you used to be able to do without
4024 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4025 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4026 ** changes in behavior that ANSI explicitly defines to be
4027 implementation dependent:
4028 *** The new compiler-only implementation still conforms with ANSI,
4029 but acts a little different than before. Besides the obvious
4030 changes in performance tradeoffs (that the cost per form passed
4031 to EVAL has gone up, and the cost per form executed by EVAL
4032 has gone down), the behavior of the system changes a little
4033 because there are no longer any interpreted function objects.
4034 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4035 e.g. doing COMPILE on the output of interactive DEFUN is
4037 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4039 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4040 has changed from (:CL) to NIL.
4041 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4042 e.g. #\Newline and #\Tab, don't have names specified in the
4043 ANSI Common Lisp standard, is now based on their ASCII symbolic
4044 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4045 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4046 are no longer used for output.
4047 ** changes in internal implementation constants:
4048 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4049 4 million. (If your application spends a lot of time GCing and
4050 you have a lot of RAM, you might want to experiment with
4051 increasing it even more.)
4052 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4053 However, almost all old code should still continue to work without
4054 immediate update, as SB-C-CALL is now a (deprecated) nickname
4056 ** Old operator names in the style DEF-FOO are now deprecated in
4057 favor of new corresponding names DEFINE-FOO, for consistency with
4058 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4059 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4060 internal symbols, but a few supported extensions like
4061 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4062 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4063 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4064 etc. as you get deeper into recursive calls to the debugger
4065 command loop, instead of the old "5]", "5]]", "5]]]"
4066 sequence. (I was motivated to do this when squabbles between
4067 ILISP and SBCL left me very deeply nested in the debugger. In the
4068 short term, this change will probably provoke more ILISP/SBCL
4069 squabbles, but hopefully it will be an improvement in the long run.)
4070 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4071 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4072 function, since declaiming return types involving aliens is
4073 (1) annoyingly messy to do by hand and (2) vital to efficient
4074 compilation of code which calls such functions.
4075 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4076 longer reexported by the SB-EXT package. They're solely useful
4077 for alien code, so it seems more logical that you should get
4078 them from the SB-ALIEN package, not in SB-EXT.
4079 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4080 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4081 features. Instead, the code that they used to control is always
4082 built into the system.
4083 * many other bug fixes
4084 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4085 advantage of the new EVAL-WHEN stuff and to clean them up in
4086 general, and they are now more ANSI-compliant in a number of
4087 ways. Martin Atzmueller is responsible for a lot of this.
4088 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4090 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4091 *** correct ERROR type for various file operations
4092 *** some fixes for Lisp streams
4093 *** DEFMETHOD syntax checking
4094 *** changing old weird representation of debug information as
4095 strings (which, among their other deficiencies, don't transform
4096 correctly when you rename packages, and don't change their
4097 print representation when you change things like *PACKAGE*
4098 and *PRINT-LENGTH*) to symbols and lists of symbols
4099 He also made several improvements and fixed several bugs in DESCRIBE.
4100 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4102 *** misbehavior of WRITE-STRING/WRITE-LINE
4103 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4104 and several other LOOP problems as well
4105 *** DIRECTORY when similar filenames are present
4106 *** DEFGENERIC with :METHOD options
4107 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4108 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4109 *** argument ordering in FIND with :TEST option
4110 *** mishandled package designator argument in APROPOS-LIST
4111 *** various problems in the backquote readmacro
4112 *** a bug in APROPOS
4113 *** probably some others that I'm not describing very well here,
4114 since the CVS log documents them by reference to sbcl-devel
4115 messages, and the SourceForge archives aren't working well.:-(
4116 ** Dan Barlow improved the Alpha port (and is making progress on the
4117 PPC port, for those of you who think different).
4118 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4119 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4120 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4121 continues to work on the SPARC port (for those of you in a position
4122 to look down upon our little PC-compatible boxes from a great height).
4123 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4124 and uses that copy, rather than the current dynamic value, when
4125 it's trying to decide whether to truncate output. Thus e.g.
4126 (let ((*print-lines* 50))
4127 (pprint-logical-block (stream nil)
4129 (let ((*print-lines* 8))
4130 (print (aref possiblybigthings i) stream)))))
4131 should now truncate the logical block only at 50 lines, instead of
4132 often truncating it at 8 lines, as it did before.
4133 * The doc/cmucl/ directory, containing old CMU CL documentation
4134 from the time of the fork, is no longer part of the base system.
4135 SourceForge has shut down its anonymous FTP service, and with it
4136 my original plan for distributing the old CMU CL documentation
4137 there. For now, if you need these files you can download an old
4138 SBCL source release and extract them from it.
4139 * The fasl file version number changed again, for dozens of reasons,
4140 some of which are apparent above.
4142 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4143 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4144 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4145 patch, so that DISASSEMBLE output is much nicer.
4146 * The code in the SB-PROFILE package now seems reasonably stable.
4147 I still haven't decided what the final interface should look like
4148 (I'd like PROFILE to interact cleanly with TRACE, since both
4149 facilities use function encapsulation) but if you have a need
4150 for profiling now, you can probably use it successfully with
4151 the current CMU-CL-style interface.
4152 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4153 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4154 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4155 link now returns the dangling link itself, and for similar
4156 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4157 link itself. (In these cases the old code signalled an error and
4158 looped endlessly, respectively.) Thus, DIRECTORY now works even
4159 in the presence of dangling and cyclic symbolic links.
4160 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4161 is now a supported extension again, since the consensus on
4162 sbcl-devel was that it can be useful for ordinary development
4163 work, not just for debugging SBCL itself.
4164 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4165 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4166 that currently-defined functions might be redefined later with
4167 different return types.
4168 * Hash tables can be printed readably, as inspired by CMU CL code
4169 of Eric Marsden and SBCL code of Martin Atzmueller.
4170 * better error handling in CLOS method combination, thanks to
4171 Martin Atzmueller porting Pierre Mai's CMU CL patches
4172 * more overflow fixes for >16Mbyte I/O buffers
4173 * A bug in READ has been fixed, so that now a single Ctrl-D
4174 character suffices to cause end-of-file on character streams.
4175 In particular, now you only need one Ctrl-D at the command
4176 line (not two) to exit SBCL.
4177 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4179 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4180 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4181 does the right thing.
4182 * The implementation of some type tests, especially for CONDITION
4183 types, is now tidier and maybe faster, due to CMU CL code
4184 originally by Douglas Crosher, ported by Martin Atzmueller.
4185 * Some math functions have been fixed, and there are new
4186 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4187 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4188 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4189 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4190 likely to be built into sbcl-0.7.0.)
4191 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4192 CL, ported to SBCL by Martin Atzmueller)
4193 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4194 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4195 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4196 * There's a new slam.sh hack to shorten the edit/compile/debug
4197 cycle for low-level changes to SBCL itself, and a new
4198 :SB-AFTER-XC-CORE target feature to control the generation of
4199 the after-xc.core file needed by slam.sh.
4200 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4201 COMPILE-FILE is no longer supported, so that now every function
4202 gets an entry point, so that block compilation looks a little
4203 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4204 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4205 returns the number of bytes consed since the system started,
4206 rather than the number consed since the first time the function
4207 was called. (The new definition parallels ANSI functions like
4208 CL:GET-INTERNAL-RUN-TIME.)
4209 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4210 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4211 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4212 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4213 * Fasl file version numbers are now independent of the target CPU,
4214 since historically most system changes which required version
4215 number changes have affected all CPUs equally. Similarly,
4216 the byte fasl file version is now equal to the ordinary
4219 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4220 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4221 is no longer recognized. I apologize for this, because it was
4222 listed in SB-EXT as a supported extension, but I found that
4223 its existing behavior was poorly specified, as well as incorrectly
4224 specified, and it looked like too much of a mess to straighten it
4225 out. I have enough on my hands trying to get ANSI stuff to work..
4226 * many patches ported from CMU CL by Martin Atzmueller, with
4227 half a dozen bug fixes in pretty-printing and the debugger, and
4228 half a dozen others elsewhere
4229 * fixed bug 13: Floating point infinities are now supported again.
4230 They might still be a little bit flaky, but thanks to bug reports
4231 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4232 as flaky as they were.
4233 * The --noprogrammer command line option is now supported. (Its
4234 behavior is slightly different in detail from what the old man
4235 page claimed it would do, but it's still appropriate under the
4236 same circumstances that the man page talks about.)
4237 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4238 are now supported, and enabled by default. Thus, the compiler can
4239 handle many floating point and complex operations much less
4240 inefficiently. (Thus e.g. you can implement a complex FFT
4242 * The compiler now detects type mismatches between DECLAIM FTYPE
4243 and DEFUN better, and implements CHECK-TYPE more correctly, and
4244 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4245 thanks to patches from Martin Atzmueller.
4246 * various fixes to make the cross-compiler more portable to
4247 ANSI-conforming-but-different cross-compilation hosts (notably
4248 Lispworks for Windows, following bug reports from Arthur Lemmens)
4249 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4250 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4251 fixed thanks to Pierre Mai's CMU CL patches.
4252 * fixes to keep the system from overflowing internal counters when
4253 it tries to use i/o buffers larger than 16M bytes
4254 * fixed bug 45a: Various internal functions required to support
4255 complex special functions have been merged from CMU CL sources.
4256 (When I was first setting up SBCL, I misunderstood a compile-time
4257 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4258 * improved support for type intersection and union, fixing bug 12
4259 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4260 more obscure bugs as well
4261 * some steps toward byte-compiling non-performance-critical
4262 parts of the system, courtesy of patches from Martin Atzmueller
4263 * Christophe Rhodes has made some debian packages of sbcl at
4264 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4265 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4266 stable, but are nonetheless usable. When he's ready, I'd be happy
4267 to add them to the SourceForge "File Releases" section. (And if
4268 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4269 * new fasl file format version number (because of changes in
4270 internal representation of (OR ..) types to accommodate the new
4271 support for (AND ..) types, among other things)
4273 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4274 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4276 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4278 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4279 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4280 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4281 * DESCRIBE now works on structure objects again.
4282 * Most function call argument type mismatches are now handled as
4283 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4284 know whether the function will be redefined before the call is
4285 executed. (The compiler could flag local calls with full WARNINGs,
4286 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4287 it doesn't keep track of enough information to know whether calls
4288 are local in this sense.)
4289 * Compiler output is now more verbose, with messages truncated
4290 later than before. (There should be some supported way for users
4291 to override the default verbosity, but I haven't decided how to
4292 provide it yet, so this behavior is still controlled by the internal
4293 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4294 src/compiler/ir1util.lisp.)
4295 * Fasl file format version numbers have increased again, because
4296 support for the Gray streams extension changes the layout of the
4297 system's STREAM objects.
4298 * The Gray subclassable streams extension now works, thanks to a
4299 patch from Martin Atzmueller.
4300 * The full LOAD-FOREIGN extension (not just the primitive
4301 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4302 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4303 but like most other programs, it defaults to copying the Unix
4304 environment from the original process instead of starting the
4305 new process in an empty environment.
4306 * Extensions which manipulate the Unix environment now support
4307 an :ENVIRONMENT keyword option which doesn't smash case or
4308 do other bad things. The CMU-CL-style :ENV option is retained
4309 for porting convenience.
4310 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4311 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4313 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4315 * A patch from Martin Atzmueller seems to have solved the SIGINT
4316 problem, and as far as we know, signal-handling now works cleanly.
4317 (If you find any new bugs, please report them!)
4318 * The system no longer defaults Lisp source file names to types
4319 ".l", ".cl", or ".lsp", but only to ".lisp".
4320 * The compiler no longer uses special default file extensions for
4321 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4322 seems to expect a single default extension for all compiled code,
4323 and there's no compelling reason to try to stretch the standard
4324 to allow two different extensions.) Instead, byte-compiled files
4325 default to the same extension as native-compiled files.
4326 * Fasl file format version numbers have increased again, because
4327 a rearrangement of internal implementation packages made some
4328 dumped symbols in old fasl files unreadable in new cores.
4329 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4330 many fewer weird special cases.
4331 * Bug #17 (differing COMPILE-FILE behavior between logical and
4332 physical pathnames) has been fixed, and some related misbehavior too,
4333 thanks to a patch from Martin Atzmueller.
4334 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4335 by Tim Moore, ported to SBCL by Martin Atzmueller.
4336 * Martin Atzmueller fixed several filesystem-related problems,
4337 including bug #36, in part by porting CMU CL patches, which were
4338 written in part by Paul Werkowski.
4339 * More compiler warnings in src/runtime/ are gone, thanks to
4340 more patches from Martin Atzmueller.
4341 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4344 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4346 * DESCRIBE now works on CONDITION objects.
4347 * The debugger now handles errors which arise when trying to print
4348 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4350 * The build system now uses an additional file, customize-target-features.lisp,
4351 to allow local modifications to the target *FEATURES* list. (The point of
4352 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4353 debugging features enabled, without having to worry about propagating it
4354 into everyone's system when I do a "cvs update".) When no
4355 customize-target-features.lisp file exists, the target *FEATURES* list
4356 should be constructed the same way as before.
4357 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4358 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4359 warn about behavior which is undefined under the ANSI spec. Note: This
4360 is specified by ANSI, but it's not very popular with programmers.
4361 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4362 macro in the SBCL sources for an example of a workaround which you
4363 might use to make portable ANSI-standard code which does what you want.
4364 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4365 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4366 when it's used as a non-toplevel form. (This is required in order
4367 to implement the DEFCONSTANT-EQX macro.)
4368 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4369 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4370 funny things, due to bugs in the implementation of EVAL-WHEN
4371 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4372 non-toplevel DEFCONSTANTs are uncommon.)
4373 * The core file version number and fasl file version number have been
4374 incremented, because the old noncompliant DEFCONSTANT behavior involved
4375 calling functions which no longer exist, and because I also took the
4376 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4377 * fixed bug 1 (error handling before read-eval-print loop starts), and
4378 redid debugger restarts and related debugger commands somewhat while
4380 ** The QUIT debugger command is gone, since it did something
4381 rather different than the SB-EXT:QUIT command, and since it never
4382 worked properly outside the main toplevel read/eval/print loop.
4383 Invoking the new TOPLEVEL restart provides the same functionality.
4384 ** The GO debugger command is also gone, since you can just invoke
4385 the CONTINUE restart directly instead.
4386 ** The TOP debugger command is also gone, since it's redundant with the
4387 FRAME 0 command, and since it interfered with abbreviations for the
4389 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4391 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4392 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4393 some porting work by Martin Atzmueller)
4394 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4395 with a boatload of patches which he ported to SBCL. Now that those
4397 ** The system tries to make sure that its low-priority messages
4398 are prefixed by semicolons, to help people who like to use
4399 syntax highlighting in their ILISP buffer. (This patch
4400 was originally due to Raymond Toy.)
4401 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4402 patches originally written by Raymond Toy.
4403 ** The compiler understands coercion between single-value and
4404 multiple-VALUES type expressions better, getting rid of some very
4405 weird behavior, thanks to patches originally by Robert MacLachlan
4406 and Douglas Crosher.
4407 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4408 lambda lists, thanks to a patch originally by Pierre Mai.
4409 ** The system no longer bogusly warns about "abbreviated type
4411 ** The compiler gets less confused by inlining and RETURN-FROM,
4412 thanks to some patches originally by Tim Moore.
4413 ** The system no longer hangs when dumping circular lists to fasl
4414 files, thanks to a patch originally from Douglas Crosher.
4415 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4416 undefined function error.
4417 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4418 in structure slot initforms) for now, documented workaround instead:-|
4419 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4420 * fixed bug 5: added stubs for various Gray stream functions called
4421 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4422 installed, at least appropriate type errors are generated
4423 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4424 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4425 consistently in DEFMETHOD forms.
4426 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4427 it doesn't seem to affect SBCL after all
4428 * The C runtime system now builds with better optimization and many
4429 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4431 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4433 * The system is now under CVS at SourceForge (instead of the
4434 CVS repository on my home machine).
4435 * The new signal handling code has been tweaked to treat register
4436 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4437 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4438 downstream, e.g. in debug-int.lisp, has implicit dependencies
4439 on the unsignedness of integer representation of machine words,
4440 and that caused the system to bomb out with infinite regress
4441 when trying to recover from type errors involving signed values,
4442 e.g. (BUTLAST '(1 2 3) -1).)
4443 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4444 (This was one of the bugs Peter Van Eynde reported back in July.)
4445 * The system now uses code inspired by Colin Walters' O(N)
4446 implementation of MAP (from the cmucl-imp@cons.org mailing
4447 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4448 inline the MAP operation, and there is more than one
4449 sequence argument to the MAP call (so that it can't just
4450 do ETYPECASE once and for all based on the type of the
4451 single sequence argument). (The old non-inline implementation
4452 of the general M-argument sequence-of-length-N case required
4453 O(M*N*N) time when any of the sequence arguments were LISTs.)
4454 * The QUIT :UNIX-CODE keyword argument has been renamed to
4455 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4456 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4458 * Raymond Wiker's patches to port dynamic loading from Linux to
4459 FreeBSD have been added.
4460 * The BUGS file is now more nearly up to date, thanks in large part
4461 to Martin Atzmueller's review of it.
4462 * The debugger now flushes standard output streams before it begins
4463 its output ("debugger invoked" and so forth).
4464 * The core version number and fasl file version number have both
4465 been incremented, because of incompatible changes in the layout
4467 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4468 used to not be called for a saved Lisp image.)
4469 * Martin Atzmueller's version of a patch to fix a compiler crash,
4470 as posted on sbcl-devel 13 September 2000, has been installed.
4471 * Instead of installing Martin Atzmueller's patch for the
4472 compiler transform for SUBSEQ, I deleted the compiler transform,
4473 and transforms for some similar consing operations.
4474 * A bug in signal handling which kept TRACE from working on OpenBSD
4476 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4477 away by constant folding
4478 * The system now defines its address space constants in one place
4479 (in the Lisp sources), and propagates them automatically elsewhere
4480 (through GENESIS and the sbcl.h file). Therefore, patching the
4481 address map is less unnecessarily tedious and error-prone. The
4482 Lisp names of address space constants have also been systematized.
4483 * CVS tags like dollar-Header-dollar have been removed from
4484 the sources, because they have never saved me trouble and
4485 they've been source of trouble working with patches and other
4486 diff-related operations.
4487 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4488 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4490 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4492 * The system has been ported to OpenBSD.
4493 * The system now compiles with a simple "sh make.sh" on the systems
4494 that it's supported on. I.e., now you no longer need to tweak
4495 text in the target-features.lisp-expr and symlinks in src/runtime/
4496 by hand, the make.sh takes care of it for you.
4497 * The system is no longer so grossly inefficient when compiling code
4498 involving vectors implemented as general (not simple) vectors (VECTOR T),
4499 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4500 which dares to use the various sequence functions on non-simple
4501 vectors, takes less of a performance hit.
4502 * There is now a primitive type predicate VECTOR-T-P
4503 to test for the (VECTOR T) type, so that e.g.
4504 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4505 can now be compiled with some semblance of efficiency. (The old code
4506 turned the type declaration into a full call to %TYPEP at runtime!)
4507 * AREF on (VECTOR T) is still not fast, since it's still compiled
4508 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4509 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4510 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4511 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4512 without making full calls to SUBTYPEP at runtime.
4513 (Some analogous efficiency issues for non-simple vectors specialized to
4514 element types other than T, or for non-simple multidimensional arrays,
4515 have not been addressed. They could almost certainly be handled the
4516 same way if anyone is motivated to do so.)
4517 * The changes in array handling break binary compatibility, so
4518 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4519 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4520 instead of (VALUES T T).
4521 * By following the instructions that Dan Barlow posted to sbcl-devel
4522 on 2 July 2000, I was able to enable primitive dynamic object
4523 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4524 functionality is not implemented (since it calls ld to resolve
4525 library references automatically, requiring RUN-PROGRAM for its
4526 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4527 try to resolve library references) is now supported.
4528 * The system now flushes the standard output streams when it terminates,
4529 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4530 them at several other probably-convenient times, e.g. in each pass of
4531 the toplevel read-eval-print loop, and after evaluating a form given
4532 as an "--eval" command-line option. (These changes were motivated by a
4533 discussion of stream flushing issues on cmucl-imp in August 2000.)
4534 * The source transform for TYPEP of array types no longer assumes
4535 that an array whose element type is a not-yet-defined type
4536 is implemented as an array of T, but instead punts, so that the
4537 type will be interpreted at runtime.
4538 * There is now some support for cross-compiling in make.sh: each of
4539 the phases of make.sh has its own script. (This should be transparent
4540 to people doing ordinary, non-cross-compile builds.)
4541 * Since my laptop doesn't have hundreds of megabytes of memory like
4542 my desktop machine, I became more motivated to do some items on
4543 my to-do list in order to reduce the size of the system a little:
4544 ** Arrange for various needed-only-at-cold-init things to be
4545 uninterned after cold init. To support this, those things have
4546 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4547 symbols with such names are now uninterned after cold init).
4548 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4549 fasl files for cold load.
4550 ** Remove the old compiler structure pooling code (which used to
4551 be conditional on the target feature :SB-ALLOC) completely.
4552 ** Redo the representation of some data in cold init to be more compact.
4553 (I also looked into supporting byte compiled code at bootstrap time,
4554 which would probably reduce the size of the system a lot, but that
4555 looked too complicated, so I punted for now.)
4556 * The maximum signal nesting depth in the src/runtime/ support code has
4557 been reduced from 4096 to 256. (I don't know any reason for the very
4558 large old value. If the new smaller value turns out to break something,
4559 I'll probably just bump it back up.)
4560 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4562 * Many, many bugs reported by Peter Van Eynde have been added to
4563 the BUGS list; some have even been fixed.
4564 * While enabling dynamic object file loading, I tried to make the
4565 code easier to understand, renaming various functions and variables
4566 with less ambiguous names, and changing some function calling
4567 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4568 * While trying to figure out how to do the OpenBSD port, I tried to
4569 clean up some of the code in src/runtime/. In particular, I dropped
4570 support for non-POSIX signal handling, added various comments,
4571 tweaked the code to reduce the number of compilation warnings, and
4572 renamed some files to increase consistency.
4573 * To support the new automatic configuration functionality in make.sh,
4574 the source file target-features.lisp-expr has been replaced with the
4575 source file base-target-features.lisp-expr and the machine-generated
4576 file local-target-features.lisp-expr.
4577 * fixed a stupid quoting error in make.sh so that using CMU CL
4578 "lisp -batch" as cross-compilation host works again
4580 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4582 * DESCRIBE no longer tries to call itself recursively to describe
4583 bound/fbound values, so that it no longer fails on symbols which are
4584 bound to themselves (like keywords, T, and NIL).
4585 * DESCRIBE now works on generic functions.
4586 * The printer now prints less-screwed-up representations of closures
4587 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4588 * A private symbol is used instead of the :EMPTY keyword previously
4589 used to mark empty slots in hash tables. Thus
4590 (DEFVAR *HT* (MAKE-HASH-TABLE))
4591 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4592 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4593 now does what ANSI says that it should. (You can still get
4594 similar noncompliant behavior if bang on the hash table
4595 implementation with all the symbols you get back from
4596 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4597 This breaks binary compatibility, since tests for equality to
4598 :EMPTY are wired into things like the macroexpansion of
4599 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4601 * There's now a minimal placeholder implementation for CL:STEP,
4602 as required by ANSI.
4603 * An obscure bug in the interaction of the normal compiler, the byte
4604 compiler, inlining, and structure predicates has been patched
4605 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4606 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4608 * Missing ordinary arguments in a macro call are now detected even
4609 when the macro lambda list contains &KEY or &REST.
4610 * The debugger no longer complains about encountering the top of the
4611 stack when you type "FRAME 0" to explicitly instruct it to go to
4612 the top of the stack. And it now prints the frame you request even
4613 if it's the current frame (instead of saying "You are here.").
4614 * As specified by ANSI, the system now always prints keywords
4615 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4617 * The default initial SIZE of HASH-TABLEs is now smaller.
4618 * Type information from CLOS class dispatch is now propagated
4619 into DEFMETHOD bodies, so that e.g.
4620 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4622 is now basically equivalent to
4623 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4624 (DECLARE (TYPE SINGLE-FLOAT X))
4626 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4627 operation, without having to do run-time type dispatch.
4628 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4629 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4630 * Since I don't seem to be making big file reorganizations very often
4631 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4632 is overflowing my ability to conveniently back them up), I've finally
4633 checked the system into CVS. (The CVS repository is on my home system,
4634 not at SourceForge -- putting it on SourceForge might come later.)
4635 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4636 high-level GC-NOTIFY-FOO functions send their output. (There's
4637 still very little control of where low-level verbose GC functions
4638 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4639 less than it used to -- the GC-NOTIFY-FOO functions are now under
4640 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4641 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4642 in only one place in the source code, and propagates it automatically
4643 everywhere that it's needed. Thus e.g. when I bump the version from
4644 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4645 * The C source files now include boilerplate legalese and documentation
4646 at the head of each file (just as the Lisp source files already did).
4647 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4648 to his page will be replaced with a link to his new CLiki service.
4650 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4652 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4653 * The build process now looks for GNU make under the default name "gmake",
4654 instead of "make" as it used to. If GNU make is not available as "gmake"
4655 on your system, you can change this default behavior by setting the
4656 GNUMAKE environment variable.
4657 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4658 can build without error under CMU CL.
4660 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4662 * There is now a partial SBCL user manual (with some new text and some
4663 text cribbed from the CMU CL manual).
4664 * The beginnings of a profiler have been added (starting with the
4665 CMU CL profiler and simplifying and cleaning up). Eventually the
4666 main interface should be through the TRACE macro, but for now,
4667 it's still accessed through vaguely CMU-CL-style functions and macros
4668 exported from the package SB-PROFILE.
4669 * Some problems left over from porting CMU CL to the new
4670 cross-compilation bootstrap process have been cleaned up:
4671 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4672 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4673 part when getting rid of the compiler *BACKEND* stuff.)
4674 ** The value of *NULL-TYPE* was screwed up, because it was
4675 being initialized before the type system knew the final
4676 definition of the 'NULL type. This screwed up several key
4677 optimizations in the compiler, causing inefficiency in all sorts
4678 of places. (I found it because I wanted to understand why
4679 GET-INTERNAL-RUN-TIME was consing.)
4680 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4681 PROCLAIM FTYPE information. Unfortunately this broke binary
4682 compatibility again, since now the forms output by DEFGENERIC
4683 to refer to functions which didn't exist in 0.6.3.
4684 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4685 can use the new (as of 0.6.3) transform for SOME into MAP into
4687 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4688 values to (INTEGER 0 1000000), so that the time code will no longer
4689 occasionally get blown up by Linux returning 1000000 microseconds
4690 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4691 its output conform to the ANSI spec. (Alas, this makes its output
4692 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4693 * A full call to MAP NIL with a single sequence argument no longer conses.
4694 * fixes to problems pointed out by Martin Atzmueller:
4695 * The manual page no longer talks about multiprocessing as though
4696 it were currently supported.
4697 * The ILISP support patches have been removed from the distribution,
4698 because as of version 5.10.1, ILISP now supports SBCL without us
4699 having to maintain patches.
4700 * added a modified version of Raymond Toy's recent CMU CL patch for
4701 EQUALP comparison of HASH-TABLE
4703 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4705 * The system still can't cross-compile itself with
4706 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4707 entails), but at least it can compile more of itself that way
4708 than it used to be able to, and various buglets which were uncovered
4709 by trying to cross-compile itself that way have now been fixed.
4710 * This release breaks binary compatibility again. This time
4711 at least I've incremented the FASL file format version to 2, so that the
4712 problem can be detected reliably instead of just causing weird errors.
4713 * various new style warnings:
4714 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4715 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4716 ** using the lexical binding of a variable named in the *FOO* style
4717 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4718 as specified by ANSI.
4719 * *RANDOM-STATE* is no longer automatically initialized from
4720 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4721 default behavior of the system is to repeat its behavior every time
4722 it's run. If you'd like to change this behavior, you can always
4723 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4724 old convention there was no comparably easy way to get the system to
4725 repeat its behavior every time it was run.
4726 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4727 FTYPE declarations has been removed, in favor of their ANSI
4728 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4729 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4730 the types of their sequence arguments can be determined at compile time.
4731 This is done through a new open code expansion for MAP which eliminates
4732 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4733 argument types can be determined at compile time.
4734 * The optimizer now transforms COERCE into an identity operation when it
4735 can prove that the coerced object is already of the correct type. (This
4736 can be a win for machine generated code, including the output of other
4737 optimization transforms, such as the MAP transform above.)
4738 * Credit information has been moved from source file headers into CREDITS.
4739 * Source file headers have been made more standard.
4740 * The CASE macro now compiles without complaining even when it has
4743 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4745 * (Note that the way that the PCL macroexpansions were rewritten
4746 to accommodate the change in DEFGENERIC below breaks binary
4747 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4748 not run under sbcl-0.6.2. Once we get out of alpha releases,
4749 i.e. hit release 1.0.0, we'll probably try to maintain binary
4750 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4751 and sbcl-1.4.4. Until then, however, it might be fairly common
4752 for maintenance releases to break binary compatibility.)
4753 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4755 * The reporting of unhandled signals has been changed to print some
4756 explanatory text as well as the report form. (Previously only
4757 the report form was printed.)
4758 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4759 it defines, so that the compiler no longer issues undefined function
4760 warnings for compiled-but-not-yet-loaded generic functions.
4761 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4762 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4763 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4764 section of the ANSI spec are supported.
4765 * The "" nickname for the "KEYWORD" package has been removed.
4766 The reader still handles symbol tokens which begin with a package marker
4767 as keywords, but it doesn't expose its mechanism for doing so in the
4768 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4769 * The system now issues STYLE-WARNINGs for contradictory TYPE
4770 proclamations. (Warnings for contradictory FTYPE proclamations would
4771 be nice too, but those can't be done usefully unless the type system
4772 is made smarter about FUNCTION types.)
4773 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4774 systematized, so that "*target-*.lisp is supposed to exist only on the
4775 target and imply that there's a related file which exists on the
4776 host, and *host-*.lisp is supposed to exist only on the host and imply
4777 that there's a related file which exists on the target. This involves a
4778 lot of renaming. Hopefully the acute confusion caused by the renaming
4779 will be justified by the reduction in chronic confusion..
4780 ** runtime-type.lisp -> early-target-type.lisp
4781 ** target-type.lisp -> late-target-type.lisp
4782 ** early-host-format.lisp -> early-format.lisp
4783 ** late-host-format.lisp -> late-format.lisp
4784 ** host-error.lisp -> misc-error.lisp
4785 ** early-error.lisp -> early-target-error.lisp
4786 ** late-error.lisp -> late-target-error.lisp
4787 ** host-defboot.lisp -> early-defboot.lisp
4788 ** code/misc.lisp -> code/target-misc.lisp
4789 ** code/host-misc.lisp -> code/misc.lisp
4790 ** code/numbers.lisp -> code/target-numbers.lisp
4791 ** code/early-numbers.lisp -> numbers.lisp
4792 ** early-host-type.lisp -> early-type.lisp
4793 ** late-host-type.lisp -> late-type.lisp
4794 ** host-typep.lisp -> typep.lisp
4795 ** load.lisp -> target-load.lisp
4796 ** host-load.lisp -> load.lisp
4797 ** host-disassem.lisp -> disassem.lisp
4798 ** host-insts.lisp -> insts.lisp
4799 ** byte-comp.lisp -> target-byte-comp.lisp
4800 ** host-byte-comp.lisp -> byte-comp.lisp
4801 ** host-signal.lisp -> signal.lisp
4802 ** host-defstruct.lisp -> defstruct.lisp
4803 ** late-target-type.lisp -> deftypes-for-target.lisp
4804 Furthermore, several other previously target-only files foo.lisp (e.g.
4805 hash-table.lisp and random.lisp) have been split into a target-and-host
4806 foo.lisp file and a target-only target-foo.lisp file, with their key type
4807 definitions in the target-and-host part, so that the cross-compiler will
4808 know more about target types.
4809 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4810 gone away. In their place are various *BACKEND-FOO* variables
4811 corresponding to the slots of the old structure.
4812 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4813 into the target SBCL has been fixed.
4814 * The chill.lisp system for loading cold code into a running SBCL
4816 * Support for the CMU CL "scavenger hook" extension has been removed.
4817 (It was undocumented and unused in the CMU CL sources that SBCL was
4818 derived from, and stale in sbcl-0.6.1.)
4819 * Various errors in the cross-compiler type system were detected
4820 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4821 (enabling various consistency checks). Many of them were fixed,
4822 but some hard problems remain, so the compiler is back to
4823 running without *TYPE-SYSTEM-INITIALIZED* for now.
4824 * As part of the cross-compiler type system cleanup, I implemented
4825 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4826 * I have started adding UNCROSS calls throughout the type system
4827 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4828 on cross-compiler input files will be able to go away, and various
4830 * CONSTANTP now returns true for quoted forms (as explicitly required
4833 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4835 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4836 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4837 (MAKE-LIST -1). In the longer term, it ought to become true
4838 that declarations are assertions even at SAFETY 1. For now, it's not
4839 quite true even at SAFETY 3, but it's at least more nearly true..
4840 (Note that this change seems to increases the size of the system by
4841 O(5%) and to decrease the speed of the compiler by 20% or more.)
4842 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4843 for the problem of printing dozens of lines of distracting information
4844 about low-level system machinery as part of the top stack frame
4845 on entry to the debugger when an undefined function was called.
4846 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4847 is not reset to COMMON-LISP-USER.
4848 * Compilation of stuff related to dyncount.lisp has been made conditional
4849 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4850 smaller. The various dyncount-related symbols have been moved into
4851 a new "SB-DYNCOUNT" package.
4852 * tty-inspect.lisp has been renamed to inspect.lisp.
4853 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4854 feature has gone away. (When we eventually port to other flavors of
4855 libc and/or Unix, we'll try to make the differences between flavors
4856 invisible at the user level.)
4857 * Various other *FEATURES* tags, and/or their associated conditionals,
4858 have been removed if obsolescent, or given better documentation, or
4859 sometimes given more-mnemonic names.
4861 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4863 * tidied up "make.sh" script
4864 * tidied up system directory structure
4865 * better "clean.sh" behavior
4866 * added doc/FOR-CMUCL-DEVELOPERS
4867 * many many small tweaks to output format, e.g. removing possibly-confusing
4868 trailing #\. character in DESCRIBE-INSTANCE
4869 * (EQUALP #\A 'A) no longer signals an error.
4870 * new hashing code, including EQUALP hashing
4871 * tidied up Lisp initialization and toplevel
4872 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4873 * command line argument processing
4874 * added POSIX-GETENV function to deal with Unix-ish environment variables
4875 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4876 terminating SBCL on EOF
4877 * non-verbose GC by default
4878 * There is no more "sbcl" shell script; the sbcl file is now the C
4879 runtime executable (just like CMU CL).
4880 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4882 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4883 symbol and package information as Lisp native symbol and package objects
4884 instead of strings naming symbols and strings naming packages. This way,
4885 whenever packages are renamed (as in warm init), debug information is
4886 transformed along with everything else.
4887 * tweaked the optimization policy declarations which control the building
4888 of SBCL itself. Now, among other things, the system no longer saves
4889 source location debugging information. (This helps two problems at once
4890 by reducing SBCL size and by keeping SBCL from trying to look for its
4891 sources -- which may not exist -- when reporting errors.)
4892 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4893 debugging and testing purposes
4894 * cleaned up printing, making the printer call PRINT-OBJECT for
4895 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4896 methods, giving nearly-ANSI behavior
4897 * converted almost all special variables to use *FOO* naming convention
4898 * deleted PARSE-TIME functionality, since it can be done portably
4899 * moved some files out of cold init into warm init
4900 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4902 * regularized formatting of source files
4903 * added an install.sh script
4904 * fixed ridiculous memory usage of cross-compiler by making
4905 compiler/alloc.lisp not try to do pooling unless it can hook
4906 itself into the GC of the cross-compilation host. Now the system
4907 builds nicely on my old laptop.
4908 * added :SB-ALLOC in target-features.lisp-expr
4909 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4910 was not implemented)
4911 * re-did condition handling and note reporting in the compiler. Notes
4912 are no longer handled by signalling conditions. Style warnings
4913 and warnings are handled more correctly and reported in such a way
4914 that it's easy to find one or the other in your output (so that you
4915 can e.g. figure out which of many problems caused COMPILE-FILE to
4917 * changed the severity of several compiler warnings from full WARNING
4918 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4919 compiler note reporting so that it doesn't use the condition system
4920 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4921 COMPILE-FILE command)
4922 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4923 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4924 no longer supported, since their implementation was deeply intertwingled
4925 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4926 * removed bogus "support" for compiler macros named (SETF FOO), and
4927 removed the compiler macro for SETF INFO (but only after making a fool
4928 of myself on the cmucl-imp mailing list by posting a bogus patch for
4929 DEFINE-COMPILER-MACRO..)
4930 * Compiled files containing forms which have side effects on the Lisp
4931 reader (such as DEFPACKAGE forms) are now handled more correctly.
4932 (Compiler queuing of top level lambdas has been suppressed by setting
4933 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4934 * deleted various currently-unused source files, e.g. gengc.lisp. They
4935 may be added back at some point e.g. when porting to other architectures,
4936 but until they are it's distracting to distribute them and to try to
4938 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4939 there were so many of them they're just distractions, and UNCROSS is
4940 known to be able to handle the current sources
4941 * moved PROFILE functionality into TRACE, so that it will be clear
4942 how the wrapping and unwrapping of functions when you profile them
4943 interacts with the wrapping and unwrapping of functions when you
4944 trace them. (Actually, the functionality isn't there yet, but at least
4945 the interface specification is there. Hopefully, the functionality will
4946 arrive with some future maintenance release.)
4947 * removed host-oops.lisp
4948 * changed signature of QUIT function to allow UNIX-CODE argument
4949 * fixed READ-SEQUENCE bug
4950 * tweaked verbose GC output so that it looks more like the progress
4951 output that ANSI specifies for functions like LOAD
4952 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4953 * added <http://sbcl.sourceforge.com> to the banner information printed by