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)
33 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
34 REPL unusable. (reported by Daniel Herring)
36 changes in sbcl-1.0.23 relative to 1.0.22:
37 * enhancement: when disassembling method functions, disassembly
38 for the associated fast function is also produced.
39 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
41 * optimization: printing with *PRINT-PRETTY* true is now more
42 efficient as long as the object being printed doesn't require
43 special handling by the pretty printer.
44 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
45 now interact correctly with type declarations.
46 * partial bug fix: PCL detects infinite recursion during wrapper
47 validation. (thanks to Attila Lendvai)
48 * bug fix: #426; nested function calls are inlined properly.
49 Previously if FOO was an inline function, in calls of the form
50 (FOO (FOO ...)) the outer call was not inlined.
51 * bug fix: long long arguments passed in registers to alien
52 functions on PowerPC Linux and NetBSD are now handled correctly
53 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
55 changes in sbcl-1.0.22 relative to 1.0.21:
56 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
57 for the shared object in the current directory, but passes the native
58 namestring of the designated pathname to the operation system's shared
59 object loading function as-it.
60 * minor incompatible change: --disable-debugger toplevel option now takes
61 effect before processing of initialization files and --eval or --load
63 * new feature: new commandline argument: --script, which supports
64 shebang lines. See documentation for details. (based on work by
66 * new feature: SAVE-LISP-AND-DIE can save current values of
67 --dynamic-space-size and --control-stack-size in the executable core,
68 causing it to skip normal runtime option processing. See documentation
69 for details. (thanks to Zach Beane)
70 * enhancement: inoccous calls to EVAL or generic functions dispatching
71 on subclasses of eg. STREAM no longer cause compiler notes to appear.
72 * enhancement: the system no longer resignals errors from --load and
73 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
74 associated with the original error to be lost. (thanks to Ariel
76 * enhancement: :DONT-SAVE keyword argument has been added to
77 LOAD-SHARED-OBJECT for controlling interaction with
78 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
79 the effects of an earlier LOAD-SHARED-OBJECT call.
80 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
81 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
82 provided. (reported by Cedric St-Jean)
83 * bug fix: circularity handling in the reader did not treat raw
84 structure slots correctly. (reported by Cedric St-Jean)
85 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
86 file descriptors when there were none.
87 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
88 was broken. (reporteed by Willem Broekema)
89 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
90 pathnames without a directory.
91 * bug fix: COMPILE-FILE did not warn about undefined variable
92 references at toplevel, and LOAD of the resulting fasl did
94 * bug fix: functions with non-required arguments used to end up with
95 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
96 * bug fix: redefining a function with non-required arguments didn't
97 update the system's knowledge about its call signature properly.
98 * bug fix: fixed #431; incompatible alien record type redefinitions
99 are detected and handled. (reported by Neil Haven)
100 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
101 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
103 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
104 after alien stack frames.
105 * bug fix: strings passed to mk{s,d}temp lacked null termination
107 changes in sbcl-1.0.21 relative to 1.0.20:
108 * new feature: the compiler is able to track the effective type of a
109 generic function across method addition and removal.
110 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
111 appropriately typed structure slots without locking.
112 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
113 information like those gathered by TIME using a programming-friendly
115 * new feature: TIME reports time taken even if the form performs a
116 non-local transfer of control.
117 * enhancement: reduced conservativism on GENCGC platforms: on
118 average 45% less pages pinned (measured from SBCL self build).
119 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
120 mutate constant symbols or violate declaimed type of the symbol.
121 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
122 sleeping on the semaphore in heavily contested semaphores.
123 * bug fix: semaphores and condition variables were not interrupt
125 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
126 owned by other threads anymore.
127 * bug fix: FIND on lists called KEY outside the specified
128 subsequence. (reported by budden)
129 * bug fix: LOG doesn't use single-float intermediate results when
130 given mixed integer and double-float arguments, leading to better
131 precision. (reported by Bob Felts)
132 * bug fix: LOG with base zero returned values of inconsistent type.
134 changes in sbcl-1.0.20 relative to 1.0.19:
135 * minor incompatible change: OPTIMIZE qualities
136 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
137 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
138 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
139 * documentation: some slot access efficiency guidelines have been
140 added to the user manual.
141 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
142 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
143 as ASSOC and MEMEBER.
144 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
145 to more efficient EQ-comparison versions more often.
146 * optimization: enhanced derivation of DOLIST iteration variable type
148 * optimization: constant folding of simple (LIST ...) forms as DOLIST
150 * optimization: runtime lookup of function definitions can be
151 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
152 * optimization: compiler is able to derive the return type of
153 (AREF (THE STRING X) Y) as being CHARACTER.
154 * optimization: CLRHASH on empty hash-tables no longer does pointless
155 work. (thanks to Alec Berryman)
156 * optimization: REPLACE deftransforms don't punt when :START1 or
158 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
159 no longer emits a code deletion note. (reported by Andrew
161 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
162 functions with an odd number of &OPTIONAL arguments, a &REST
163 argument, and one or more &KEY arguments at the call site.
164 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
165 arguments appeared at call sites as well.
166 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
167 READ-LINE &co can no longer read from them afterwards. (reported
169 * bug fix: fixed #427: unused local aliens no longer cause compiler
170 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
172 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
173 alien-stack leakage. (reported by Andy Hefner)
174 * bug fix: PROGV signals an error when an attempt to violate declared
175 type of a variable or bind a constant is made.
176 * bug fix: SET signals an error when an attempt to violate declared
177 type of a variable is made.
178 * bug fix: restart computation during the execution of a restart
179 test function no longer causes infinite recursion. (reported by
181 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
182 signals an error. (thanks to Pierre Mai)
183 * bug fix: EXPORT left symbol unexported in conflict situations.
184 (thanks to Michael Weber)
185 * bug fix: correctly handle name conflicts involving CL:NIL.
186 (thanks to Michael Weber)
187 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
188 conflicts arising from USEing package with conflicting symbols
189 correctly. (thanks to Michael Weber)
191 changes in sbcl-1.0.19 relative to 1.0.18:
192 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
193 warnings that go otherwise unhandled will be muffled if they are
194 of the type that's the value of this variable.
195 * optimization: stack allocation is slightly more efficient on x86
197 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
198 where a raw slot always is initialized using the initform whose
199 type is not know sufficiently well a compile-time are now compiled
200 correctly. (reported by John Morrison)
201 * bug fix: compiler no longer makes erronous assumptions in the
202 presense of non-foldable SATISFIES types.
203 * bug fix: stack analysis missed cleanups of dynamic-extent
204 arguments in non-let-converted calls to local functions.
205 * improvements to the Windows port:
206 ** adjusted address spaces for building on both Win32 and
207 Win64. (thanks for John Connors)
208 * fixed some bugs revealed by Paul Dietz' test suite:
209 ** interval arithmetic during type derivation used inexact integer
210 to single-float coercions.
211 ** arithmetic operations involving large integers and single
212 floats give the same results in compiled and interpreted code.
213 ** deriving the result type of COERCE no longer signals an error
214 if the derived type of the second argument is a MEMBER type
215 containing invalid type specifiers.
216 ** ADJOIN with constant NIL as second argument works correctly.
217 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
219 changes in sbcl-1.0.18 relative to 1.0.17:
220 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
221 profiles only the current thread.
222 * minor incompatible change: changes to SYMBOL-VALUE of constants
223 defined with DEFCONSTANT now signal an error.
224 * enhancement: SB-SPROF now has support for wallclock profiling,
225 and is also able to profile specific threads. REPORT output
226 has also additional sorting options.
227 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
229 * optimization: structure allocation has been improved
230 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
231 ** out of line constructors are ~10% faster.
232 ** inline constructors are ~15% faster.
233 ** inline constructors are capable of dynamic extent allocation
234 (generally on x86 and x86-64, in some cases on other platforms
236 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
238 * optimization: file compiler is now able to coalesce non-circular
239 lists, non-base strings, and bit-vectors. Additionally, constants
240 are never referenced through SYMBOL-VALUE at runtime.
241 * optimization: code defining methods on PRINT-OBJECT (and other
242 generic functions in the COMMON-LISP package) now loads faster.
243 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
245 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
246 fasl is now deleted. (reported by Attila Lendvai)
247 * bug fix: READ-LINE always returned NIL for the last line in files.
248 (reported by Yoshinori Tahara)
249 * bug fix: more accurate disassembly annotations of foreign function
250 calls. (thanks to Andy Hefner)
251 * bug fix: trimming non-simple strings and non-string string
252 designators when the there is nothing to trim works properly.
253 (thanks to James Knight)
254 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
255 (thanks to Travis Cross)
256 * fixed some bugs revealed by Paul Dietz' test suite:
257 ** NIL is a valid function name (regression at 1.0.13.38)
258 ** FILL on lists was missing its return value (regression at 1.0.12.27)
259 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
260 fill pointers properly (regression at 1.0.12.23)
261 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
262 displacement indices properly (regression at 1.0.12.23)
264 changes in sbcl-1.0.17 relative to 1.0.16:
265 * temporary regression: user code can no longer allocate closure
266 variable storage on stack, due to bug 419 without explicitly
267 requesting it. Please consult sbcl-devel for advice if you need to
268 use this feature in the meanwhile.
269 * new feature: runtime argument --control-stack-size can be used to
270 adjust thread default control stack size.
271 * enhancement: improved TIME output
272 ** all times are reported using the measured accuracy (milliseconds
273 for real and GC times, microseconds for everything else.)
274 ** processor cycle counts on x86 and x86-64.
275 ** interpreted forms are counted for both evaluator modes.
276 ** number of lambdas converted by the compiler is reported.
277 ** CPU percentage report (computed from real and total run time.)
278 ** more comprehensive run time reporting, using a condenced format
279 ** interperted form, lambda, and page fault counts are omitted
281 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
283 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
284 * optimization: two argument forms of LAST are upto ~10% faster
285 in normal SPEED policies.
286 * optimization: NCONC no longer needs to heap cons its &REST list
287 in normal SPEED policies.
288 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
290 * bug fix: UNION and NUNION work with :TEST-NOT once more,
291 regression since 1.0.9.1. (thanks to Eric Marsden)
292 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
293 since 1.0.15.36. (thanks to Paul Khuong)
294 * bug fix: LAST when always returned the whole list when given a bignum
295 as the second argument.
296 * bug fix: dynamic extent allocation of nested lists and vectors
297 could leak to otherwise accessible parts.
298 * bug fix: invalid optimization of heap-allocated alien variable
300 * bug fix: fasl header checking is less vulnerable to different
301 platform word lengths.
302 * bug fix: more correct assembler syntax for GNU binutils
303 2.18.50.0.4 support. (thanks to Marijn Schouten)
304 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
306 * bug fix: the fopcompiler can handle LOCALLY forms (with no
307 declarations) successfully. (reported by Attila Lendvai)
309 changes in sbcl-1.0.16 relative to 1.0.15:
310 * minor incompatible change: revert the changes to sb-posix's error
311 signaling added in 1.0.14.
312 * minor incompatible change: change PROBE-FILE back to returning
313 NIL whenever we can't get a truename, as was the case before 1.0.14.
314 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
315 inherits from ERROR instead of just CONDITION.
316 * new feature: SB-INTROSPECT can provide source locations for instances
317 as well. (thanks to Tobias Rittweiler)
318 * optimization: binding special variables now generates smaller code
319 on threaded platforms.
320 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
321 and cases where no :TEST is given but the compiler can infer that
322 the element to search is of type (OR FIXNUM (NOT NUMBER)).
323 * optimization: better LOGNOT on fixnums.
324 * optimization: modular arithmetic for a particular requested width
325 is implemented using a tagged representation unless a better
326 representation is available.
327 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
328 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
329 for wellformedness and returns a specialized vector. (reported by
330 Francois-Rene Rideau)
331 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
332 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
333 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
334 unscheduling timer at the same time as another timer fires.
335 * bug fix: don't reschedule timers for dead threads.
336 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
337 * bug fix: copying output from RUN-PROGRAM to a stream signalled
338 bogus errors if select() was interrupted.
339 * enhancement: add support for fcntl's struct flock to SB-POSIX.
341 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
342 * enhancement: cleaner backtraces for interactive interrupts, as
343 well as other cases where the interesting frames used to be
344 obscured by interrupt handling frames.
345 * enhancement: untracing a whole package using (UNTRACE "FOO") is
346 now supported, and tracing a whole package using (TRACE "FOO") now
347 traces SETF-functions as well.
348 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
349 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
350 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
351 * unreadably printed representation of hash-tables now includes
353 * bug fix: partially fixed #188: type propagation from assignments
354 is now more efficient.
355 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
356 'DOUBLE-FLOAT) are not flushable.
357 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
358 full address of the object, and none of the tag bits.
359 * bug fix: readably printing hash-tables now respects other printer
360 control variables. (reported by Cedric St-Jean)
361 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
362 keyword with MAKE-HASH-TABLE.
363 * bug fix: export SB-POSIX:MKSTEMP.
364 * bug fix: SORT was not interrupt safe.
365 * bug fix: XREF accounts for the last node of each basic-block as
367 * bug fix: MAKE-INSTANCE optimizations interacted badly with
368 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
369 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
370 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
371 create obsolete instances in the case of redefinition or
372 obsoletion of a superclass. (thanks to Andy Hefner)
373 * bug fix: Support for the Alpha architecture has been revived; it had
374 suffered somewhat from lack of maintenance since sbcl-1.0.
375 * improvements to the Windows port:
376 ** The system detects the codepage to use at startup, instead of
377 using the value from the saved core. (thanks to Kei Suzuki)
379 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
380 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
381 (see documentation for details.)
382 * revived support for OpenBSD (contributed by Josh Elsasser)
383 * partially fixed bug #108: ROOM no longer suffers from occasional
384 (AVER (SAP= CURRENT END)) failures.
385 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
386 bodies no longer cause a WARNING to be signalled. (reported by
388 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
389 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
390 the bug in TRUNCATE.) (reported by Michael Weber)
391 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
392 no samples. (reported by Andy Hefner)
393 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
394 no longer appear as (NIL ...) frames in backtraces.
395 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
396 is now actually exported from SB-EXT as documented. (reported by
398 * bug fix: sb-aclrepl now correctly understands how to inspect
399 single-floats on 64-bit platforms where single-floats are not boxed.
400 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
401 yet been finalized. (reported by Levente Meszaros)
402 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
403 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
404 SBCL-specific optimize qualities.
406 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
407 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
408 an executable in the search path, and does so in the child
409 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
410 been removed; it can be found in the CVS history, for somebody who
411 needs that search behavior (see the manual).
412 * minor incompatible change: compiler policy re. weakening type
413 checks has changed: now type checks are weakened only if SAFETY < 2
415 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
416 unparsing of directory pathnames as files. Analogously,
417 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
418 filename to parse into a directory pathname.
419 * enhancement: implicit generic function creation now signals a
420 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
421 users can bind handlers for and muffle around calls to LOAD.
422 * enhancement: RUN-PROGRAM allows unicode arguments and environments
423 to be used (using the default stream external format), and allows
424 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
425 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
426 strings and vectors whose element-type or simplicity is not fully
427 known at compile-time.
428 * optimization: STRING-TRIM and related functions no longer allocate
429 a new string when no trimming needs to be performed. These functions
430 are also faster than before when the input string has been declared
432 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
433 * optimization: READ-LINE is significantly faster for files containing
435 * optimization: non-open coded uses of character comparison operators
436 (e.g. char=) no longer cons when called with more than one parameter
437 on platforms supporting dynamic-extent allocation.
438 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
439 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
440 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
442 * bug fix: some sequence functions elided bounds checking when
444 * bug fix: too liberal weakening of union-type checks when SPEED >
446 * bug fix: more bogus fixnum declarations in ROOM implementation
449 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
450 * new feature: MAKE-HASH-TABLE now experimentally accepts a
451 :SYNCHRONIZED argument, which makes the hash-table safe for
452 concurrent accesses (but not iteration.) See also:
453 SB-EXT:WITH-LOCKED-HASH-TABLE, and
454 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
455 * optimization: CONCATENATE on strings is an order of magnitude faster
456 in code compiled with (> SPEED SPACE).
457 * optimization: SUBSEQ is ~50% faster on lists.
458 * bug fix: bug 417 fixed -- source location reporting is now more robust.
459 * bug fix: SUBSEQ on a list will now correctly signal an error if if
460 END is smaller then START.
461 * bug fix: SB-PROFILE will no longer report extra consing for nested
462 calls to profiled functions.
463 * bug fix: ROOM implementation had bogus fixnum declarations which
464 could cause type-errors when calling ROOM on large images.
465 * bug fix: if file compilation is aborted, the partial fasl is now
466 deleted, and COMPILE-FILE returns NIL as the primary value.
467 * bug fix: number of thread safety issues relating to SBCL's internal
468 hash-table usage have been fixed.
469 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
470 be returned from its body when the values were being returned
471 using unknown-values return convection and the W-P-O was wrapped
472 inside an UNWIND-PROTECT.
473 * bug fix: sb-posix should now compile again under Windows, enabling
476 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
477 * incompatible change: hash-table accessor functions are no longer
478 automatically protected by locks. Concurrent accesses on the same hash-table
479 from multiple threads can give inconsistent results or even corrupt the
480 hash-table completely. Multi-threaded applications should do their own
481 locking at the correct granularity. In the current implementation it is
482 still safe to have multiple readers access the same table, but it's not
483 guaranteed that this property will be maintained in future releases.
484 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
485 and will signal an error at runtime.
486 * enhancement: SB-THREAD package now exports a semaphore interface.
487 * enhancement: CONS can now stack-allocate on x86 and
488 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
490 * enhancement: nested lists can now be stack allocated on
491 platforms providing stack allocation support.
492 * enhancement: dynamic-extent support has been extended to support
493 cases where there are multiple possible sources for the stack
495 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
496 if the mutex is uncontested on Linux.
497 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
498 as specified by the CLHS. (thanks to Tobias Rittweiler)
499 * bug fix: NaN comparison now works on x86-64.
500 * bug fix: CLOSE :ABORT T on a stream with pending output now
502 * bug fix: instances of non-standard metaclasses using standard
503 instance structure protocol sometimes missed the slot type checks
505 * bug fix: known functions can be inlined in high-debug code.
507 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
508 * minor incompatible change: the MSI installer on Windows no longer
509 associates .lisp and .fasl files with the installed SBCL.
510 * minor incompatible change: :UNIX is no longer present in *FEATURES*
511 on Windows. (thanks to Luis Oliviera)
512 * new feature: SB-CLTL2 contrib module now implements
513 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
514 * optimization: scavenging weak pointers is now more efficient,
515 requiring O(1) instead of O(N) per weak pointer to identify
516 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
517 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
518 method bodies using constant slot-names when the first argument is
519 a specializer parameter for the method.
520 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
521 names, when the class of the instance is a direct instance
522 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
523 as slow as the constant slot-name case.)
524 * optimization: member type construction is now O(N) instead
526 * optimization: UNION and NUNION are now O(N+M) for large
527 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
529 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
530 now more readable in environments like Slime which display it.
531 (thanks to Tobias C. Rittweiler)
532 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
533 was able to infer the correct argument type for the object on which
534 the CAS operation was being performed.
535 * bug fix: copy propagation interfered with parallel assignment
536 semantics in local calls. (reported by Paul Khuong)
537 * bug fix: the signed modular fixnum shift compiled to wrong code on
538 x86 and x86-64. (spotted by a slight modification to some of
541 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
542 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
543 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
544 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
546 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
547 and generic function now print the object identity for anonymous
548 instances. (thanks to Attila Lendvai)
549 * enhancement: as an extension to MOP, SBCL now supports SETF of
550 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
551 (thanks to Attila Lendvai)
552 * enhancement: sb-cover has an alternate annotation mode which puts
553 the form annotations at the car of the form, instead of annotating
554 it completely. The benefit of this mode is that it shows better
555 which forms were instrumented by the compiler.
556 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
557 by printer control variables. (reported by Dan Corkill)
558 * bug fix: system leaked memory when delayed output was performed by
559 the OS in smaller chunks then expected. (thanks to David Smith)
560 * bug fix: system leaked memory when file streams were not closed
562 * bug fix: large objects written to slow streams that were modified
563 after the write could end up with the modified state written to
564 the underlying file descriptor.
565 * bug fix: multiple threads operating in parallel on the same stream
566 could cause buffer-overflows.
567 * bug fix: source location information is stored correctly
568 (broken since 1.0.6). This bug would generally show up as the
569 Slime debugger highlighting the wrong form when the sldb-show-source
571 * bug fix: Branch forms are again annotated as branches in the sb-cover
573 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
574 on x86-64. (reported by Gregory Vanuxem)
575 * bug fix: EQUALP could return wrong results for structures with raw
576 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
577 word). (reported by Vjacheslav Fyodorov)
578 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
581 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
582 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
583 atomic compare-and-swap operations on threaded platforms.
584 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
585 allows assigning a global minimum value to optimization qualities
586 (overriding proclamations and declarations).
587 * enhancement: closed over variables can be stack-allocated on x86
589 * performance bug fix: GETHASH and (SETF GETHASH) are once again
591 * optimization: slot definition lookup is now O(1). This speeds up
592 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
593 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
594 * optimization: ASSOC and MEMBER can now be open-coded for all
595 combinations of keyword arguments when second argument is constant
596 and SPEED >= SPACE. In other cases a specialized version is
598 * bug fix: using obsoleted structure instances with TYPEP and
599 generic functions now signals a sensible error.
600 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
601 (reported by Kristoffer Kvello)
602 * bug fix: backtrace construction is now more careful when making
603 lisp-objects from pointers on the stack, to avoid creating bogus
604 objects that can be seen by the GC.
605 * bug fix: defaulting of values in contexts expecting more than 7
606 variables now works on x86-64. (reported by Christopher Laux)
607 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
609 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
610 as the property-list of a symbol.
611 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
612 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
613 situations requested, are once again file-compileable. (reported
616 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
617 * MOP improvement: support for user-defined subclasses of
618 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
619 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
620 the expansion of DEFMETHOD, is responsible for generating a form
621 which creates a list of specializers when evaluated. Additional
622 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
623 debugging and introspective support.
624 * minor incompatible change: the (unsupported) spinlock interface
625 has changed: free spinlock now has the value NIL, and a held spinlock
626 has the owning thread as its value.
627 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
628 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
630 * enhancement: name of a socket-stream is now "a socket" instead of
632 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
633 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
634 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
635 for generic functions. (Thanks to Tobias C. Rittweiler)
636 * optimization: bignum printing speed has been improved by 20-40%
637 (depending on the bignum size.)
638 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
640 * bug fix: the cache used by the CLOS to store precomputed effective
641 methods, slot offsets, and constant return values is now thread and
643 * bug fix: generic function dispatch function updating is now thread
644 and interrupt safe (in the sense that the known issues have been
646 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
647 * bug fix: interning EQL-specializers is now thread and interrupt safe.
648 * bug fix: asdf systems with dependencies to the SB-POSIX or
649 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
650 * bug fix: interrupt safety of applicable method computation has been
653 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
654 * new contrib: sb-cover, an experimental code coverage tool, is included
656 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
657 significantly faster.
658 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
659 produce more efficient code on x86-64 if the compiler can determine
660 that (+ INDEX <constant>) does not require a bounds check and FOO
661 has an element type at least 8 bits wide.
662 * enhancement: a new, experimental synchronous timeout facility is
663 provided. Refer to SB-SYS:WITH-DEADLINE for details.
664 * enhancement: when a symbol name conflict error arises, the
665 conflicting symbols are always printed with a package prefix.
666 (thanks to Kevin Reid)
667 * enhancement: stepping is now once again supported on the SPARC and
668 MIPS platforms. (It is also now more likely to work on CheneyGC
670 * enhancement: sb-sprof can now also track and report accurate call
672 * bug fixes: the treatment of non-standard subclasses of
673 SB-MOP:SPECIALIZER is more correct.
674 * incompatible change: PURIFY no longer copies the data from the
675 dynamic space into the static and read-only spaces on platforms
676 that use the generational garbage collector
677 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
679 * bug fix: GC race condition occasionally resulting in crashes with
680 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
682 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
684 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
685 a STYLE-WARNING to be signalled (regression from 1.0.4.)
686 * bug fix: an asynchronous interrupt could previously leave the
687 system running with GC inhibited.
688 * bug fix: a DECLARE form evaluated at top-level now causes an error
689 rather than silently (or verbosely) returning NIL.
690 * bug fix: trying to dissassemble functions compiled at high DEBUG could
691 result in a error being signalled due to source form lookup errors.
692 (reported by Peter Graves)
694 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
695 * incompatible change: removed writer methods for host-ent-name,
696 host-ent-addresses -- changing the values did not update the DNS
698 * minor incompatible change: changed experimental JOIN-THREAD interface
699 * documentation: the manual now lists reader and writer methods
700 in class slot documentation sections. (thanks to Richard M Kreuter)
701 * documentation: unwinding from asyncronous events has been
702 documented as unsafe.
703 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
704 in multithreaded application code.
705 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
706 platforms. (thanks to James Anderson for the optimization hint)
707 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
709 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
710 variants no longer cons.
711 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
712 their NOT- variants no longer cons.
713 * optimization: EQUAL hash tables no longer use SXHASH for objects
714 of all data types, but instead use an EQL hash for types for which
715 EQUAL is the same as EQL.
716 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
717 are significantly faster.
718 * optimization: new STRING-OUTPUT-STREAM implementation is much
719 faster for large outputs and conses 30% less on average.
720 * enhancement: XREF information is now collected for references made
721 to global variables using SYMBOL-VALUE and a constant argument.
722 * enhancement: SIGINT now causes a specific condition
723 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
724 * bug fix: FILE-POSITION used to signal an error in some cases where
725 ANSI requires it to return NIL.
726 * bug fix: ADJUST-ARRAY is now interrupt-safe.
727 * bug fix: adding and removing fd-handlers is now interrupt-safe.
728 * bug fix: inlined calls to C now ensure 16byte stack alignment on
730 * bug fix: bad type declaration in the CLOS implementation has
731 been fixed. (reported by James Anderson)
732 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
733 (thanks to Lutz Euler)
734 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
735 required by the CLHS. (reported by Samium Gromoff)
736 * bug fix: dead unbound variable references now signal an error.
737 (reported by Marco Monteiro)
738 * bug fix: / with an unused value was being deleted in safe code.
739 (thanks to Marco Monteiro and Kevin Reid)
740 * bug fix: number of characters that can be written onto a single
741 line in a file is unlimited.
742 * bug fix: some GC deadlocks caused by asynchronous interrupts have
743 been fixed by inhibiting interrupts for when GC is disabled.
744 * bug fix: some interrupt safety issues with GETHASH, (SETF
745 GETHASH), CLRHASH and REMHASH have been fixed.
746 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
747 specifier no longer causes infinite recursion.
748 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
749 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
750 * bug fix: an &environment argument with the correct variable information
751 is passed to macros that are expanded during byte compilation.
752 (reported by Samium Gromoff)
753 * bug fix: a logic error was causing the hash function for bignums to
754 have excessive amounts of collisions. (reported by Faré Rideau)
755 * bug fix: modifying the contents of an array could change the return
756 value of SXHASH on that array, which is only allowed for strings
757 and bit vectors. (bug introduced in 0.9.16)
758 * improvement: the x86-64/darwin port now passes all tests (except
759 for the debugger tests) but should still be considered
760 experimental until this is fixed.
761 * improvement: a style-warning is signaled for CASE (etc) clauses with
762 duplicate keys. (thanks to Kevin Reid)
763 * improvement: macos/x86 and macos/x86-64 now use mach exception
764 handlers for dealing with illegal instructions (for trapping and
765 error handling) and memory protection violations (for GC).
767 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
768 * new platform: experimental support for x86-64/darwin (MacOS).
769 * incompatible change: the thread-safe (on most platforms) getaddrinfo
770 and getnameinfo sockets functions are used instead of gethostbyaddr
771 and gethostbyname, on platforms where the newer functions are available.
772 As a result, the ALIASES field of HOST-ENT will always be NIL on these
774 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
775 don't print the startup banner, but behave as if --noinform was passed
776 as a command line argument. (thanks to Kevin Reid)
777 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
778 * optimization: code using alien values with undeclared types is much faster.
779 * optimization: the compiler is now able to open code SEARCH in more cases.
780 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
781 * bug fix: using standardized COMMON-LISP special variables as loop
782 variables no longer signals bogus package lock violations. (reported
784 * bug fix: declaring local loop variables to be of a range-limited type
785 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
786 (reported by Andras Simon)
787 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
788 bugs remain on x86-64.)
789 * bug fix: the #= and ## reader macros now interact reasonably with
790 funcallable instances.
791 * bug fix: type-checks for function arguments were compiled using the
792 compiler policy settings of the wrong lexical environment (in 1.0.2
794 * bug fix: SHADOW accepts characters as string designators, as required
795 by the spec (thanks to Eric Marsden)
796 * bug fix: fixed GC safety issues when foreign functions are called with
797 non-base strings as arguments
798 * bug fix: more consistent error output for fatal-compiler-warnings, like
800 * bug fix: functions with proper names were showing up as NIL in
801 backtraces (reported by Edi Weitz, regression in 1.0.2)
803 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
804 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
805 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
806 produce more efficient code on the x86 if the compiler can determine
807 that (+ INDEX <constant>) does not require a bounds check and FOO
808 has an element type at least 8 bits wide.
809 * bug fix: references to undefined variables are handled the same way
810 in toplevel forms as in the normal compiler
811 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
813 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
814 (thanks to Jon Buller)
815 * improvement: faster compilation times for complex functions
816 * improvement: added readlink support to SB-POSIX (thanks to Richard
819 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
820 * improvement: experimental support for mach exception handling on
821 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
823 * improvement: support for GBK external format.
824 (thanks to Chun Tian (binghe))
825 * improvement: the debugger now displays variables that have been closed
826 over, in code compiled with (DEBUG 2) or higher
827 * improvement: support for executable cores on NetBSD (thanks to
829 * new feature: added a RESTART-FRAME debugger command
830 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
831 be used to provide an implementation for FILE-POSITION on Gray streams
832 (thanks to Eric Marsden)
833 * new feature: add syslog, openlog and closelog support to SB-POSIX
834 (thanks to Richard Kreuter)
835 * optimization: the function call overhead in code compiled with
836 a high DEBUG optimization setting is significantly
837 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
838 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
839 (thanks to Tony Martinez)
840 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
841 evaluated once (reported by Kevin Reid)
842 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
843 works again (thanks to Kilian Sprotte)
844 * bug fix: an error is signaled for tagbodies with duplicate tags
845 (thanks to Stephen Wilson)
846 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
847 * bug fix: Win32 port can now handle foreign code unwinding Lisp
848 stack frames from alien callbacks.
849 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
850 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
851 65k pages (thanks to David Woodhouse)
852 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
854 changes in sbcl-1.0.1 relative to sbcl-1.0:
855 * new platform: FreeBSD/x86-64, including support for threading.
856 * new feature: the compiler stores cross-referencing information
857 about function calls (who-calls), macroexpansion (who-macroexpands)
858 and special variables (who-binds, who-sets, who-references) for code
859 compiled with (< SPACE 3). This information is available through the
860 sb-introspect contrib.
861 * new feature: users may subclass SEQUENCE, and have instances of
862 these classes interoperate with standard Common Lisp functions if
863 a number of methods are defined. (This feature is experimental
864 and the interface subject to change based on feedback from SBCL
865 users and the general community)
866 * improvement: sb-sprof traces call stacks to an arbitrary depth on
867 x86/x86-64, rather than the previous fixed depth of 8
868 * improvement: another pthread back-end of mutex "pthread-futex".
869 * bug fix: non-ascii command-line arguments are processed correctly
870 (thanks to Yaroslav Kavenchuk)
871 * bug fix: non-required arguments were not passed correctly when a method
872 defined using DEFMETHOD was called from a mop-generated method using
873 CALL-NEXT-METHOD (reported by Pascal Costanza)
874 * bug fix: recursion is now permitted in accessors through
875 SLOT-UNBOUND. (reported by Pascal Costanza)
876 * bug fix: an error was signaled at startup if the HOME environment
877 variable was defined, but had an empty value (reported by Peter Van Eynde)
878 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
879 signal a PROGRAM-ERROR, not a BUG.
880 * bug fix: SB-POSIX:READDIR works when built with large file support.
881 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
883 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
884 for better automatic indentation support. (thanks to Matt Pillsbury)
885 * optimization: loading generic functions no longer takes O(n^2) time,
886 proportional to the amount of methods in the generic function
887 (reported by Todd Sabin and Jeremy Brown)
888 * optimization: the FIND and POSITION family of sequence functions
889 are significantly faster on arrays whose element types have been
891 * improvements to the Windows port:
892 ** Intermittent heap corruption problems have been fixed. (thanks
893 to Alastair Bridgewater)
894 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
896 ** Lisp is able to unwind foreign exception frames from alien
897 callbacks. (thanks to Alastair Bridgewater)
899 changes in sbcl-1.0 relative to sbcl-0.9.18:
900 * improvement: experimental support for threading on FreeBSD/x86.
901 (thanks to NIIMI Satoshi)
902 * improvement: runtime option --dynamic-space-size can be used
903 to set the size of the dynamic space reserved on startup.
904 * improvement: floating point modes in effect are now saved in
905 core, and restored on startup.
906 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
907 startup, not time since first call to GET-INTERNAL-REAL-TIME.
908 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
909 threads are not running after *SAVE-HOOKS* have run.
910 * improvement: writes to CLOS instance slots are type-checked in code
911 compiled with (SAFETY 3)
912 * improvement: floating-point exception handling on FreeBSD (thanks to
914 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
915 (thanks to Zach Beane)
916 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
918 * improvement: added support for the Shift-JIS external format.
919 (contributed by NIIMI Satoshi)
920 * improvement: callbacks are supported on Linux/PPC. (thanks to
922 * bug fix: compiler bug triggered by a (non-standard) VALUES
923 declaration in a LET* was fixed. (reported by Kaersten Poeck)
924 * bug fix: file compiler no longer confuses validated and already
925 dumped structurres. (reported by Kaersten Poeck)
926 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
927 fill-pointer signals a type-error as required. (thanks to
929 * bug fix: disassemly of funcallable instances works.
930 * bug fix: single stepping on PPC.
931 * bug fix: fix thread-safety problems in the type system (generally
932 manifesting as nonsensical errors like "STRING is a bad type specifier
933 for sequences" or "The value 1 is not of type FIXNUM")
934 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
935 (reported by Josip Gracin)
936 * bug fix: an error is signaled for attempts to displace arrays with
937 incompatible element types (thanks to Mario Mommer)
938 * bug fix: more correct handling of wide characters in debug info
939 (bug reported by Attila Lendvai and fixed by Juho Snellman)
940 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
941 and don't cause extra consing
942 * optimization: MAP and MAP-INTO are significantly faster on vectors
943 whose elements types have been declared.
944 * Improvements to SB-SPROF:
945 ** Support for allocation profiling
946 ** Reduced profiling overhead, especially for long profiling runs
947 * Improvements to the Windows port:
948 ** floating point exceptions are now reported correctly.
949 ** stack exhaustion detection works partially.
950 ** more accurate GET-INTERNAL-REAL-TIME.
951 ** better RUN-PROGRAM behaviour in case of errors in the child
953 ** PROBE-FILE now simplifies pathnames correctly.
954 ** DIRECTORY now works correctly with :WILD-INFERIORS.
955 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
956 1st 1970 (although time timezone data will be unreliable).
957 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
959 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
960 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
961 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
963 * bug fix: two potential GC deadlocks affecting threaded builds.
964 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
965 returns T (reported by Anton Kazennikov)
966 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
967 with non-variable places
968 * bug fix: remove a race condition in the setting of
969 funcallable-instance functions, this should make threaded CLOS
970 code more stable against memory faults.
971 * bug fix: corruption of specials when unbinding is interrupted by an
972 asynchronous unwind (reported by Hannu Koivisto)
973 * improvement: the debugger will now also display local variables that
974 are only used once, for code compiled with a DEBUG optimization quality
977 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
978 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
979 * incompatible change: External-format support for FFI calls. The
980 SB-ALIEN:C-STRING no longer implies an ASCII
981 external-format. Instead the string is subject to external-format
982 conversion. Additionally return values of type SB-ALIEN:C-STRING
983 are by default of type (SIMPLE-ARRAY CHARACTER), not
984 SIMPLE-BASE-STRING. For an alien type that behaves like the old
985 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
986 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
987 * incompatible change: SB-EXT package no longer contains the
988 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
989 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
991 * incompatible change: the single-stepper is no longer available
992 on Alpha, Mips and Sparc platforms.
993 * minor incompatible change: the direct superclasses of
994 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
995 not (STANDARD-OBJECT FUNCTION). This makes the
996 class-precedence-lists of GENERIC-FUNCTION and
997 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
999 * minor incompatible change: the default stream external format on
1000 non-unicode SBCL is no longer detected from the locale, but is always
1002 * new feature: Add a version of evaluator that uses an interpreter instead
1003 of the compiler. EVAL still uses the compiler by default, to switch it
1004 to use the interpreter, set the value of the variable
1005 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1006 * minor incompatible change: the single-stepper REPL has been merged
1007 with the normal debugger (see the "Stepping" heading of the debugger help
1008 for more details). The debugger command STEP will no longer switch
1009 to the single-stepper REPL.
1010 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1011 for a type now works.
1012 * bug fix: loading of default sysinit file works. (thanks to Leonid
1014 * bug fix: better detection of circularities in the file-compiler.
1015 (reported by Marco Monteiro)
1016 * bug fix: the CL pathname functions now work with files that have
1017 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1018 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1019 systems with Unix98 pty semantics.
1020 * bug fix: ASDF-INSTALL will now work with bsd tar.
1021 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1023 * bug fix: timers expiring in dead threads no longer cause a
1024 type-error (reported by Paul "Nonny Mouse").
1025 * bug fix: thanks to more lightweight single-stepper instrumentation,
1026 code compiled with (DEBUG 3) will compile and execute significantly faster,
1027 and will have more accurate type-inferencing than before
1028 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1029 whose bindings are modified
1030 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1031 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1032 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1033 CL:SOFTWARE-VERSION with proper version
1035 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1036 * feature: implemented the READER-METHOD-CLASS and
1037 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1038 as specified by AMOP.
1039 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1041 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1042 (thanks to Lutz Euler)
1043 * optimization: hashing of general arrays and vectors has been
1044 improved. (reported by Any Fingerhut)
1045 * enhancement: SB-INTROSPECT is now able to find definitions of
1046 profiled functions. (thanks to Troels Henriksen)
1047 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1048 as well, allowing compiler-macros for SETF-functions to expand.
1049 * enhancement: step-instrumentation no longer wraps known
1050 single-value functions with multiple-value context, allowing
1051 better type inference.
1052 * fixed bug #337: use of MAKE-METHOD in method combination now works
1053 even in the presence of user-defined method classes. (reported by
1054 Bruno Haible and Pascal Costanza)
1055 * fixed bug #339(c): if there are applicable methods not part of any
1056 long-form method-combination group, call INVALID-METHOD-ERROR.
1057 (reported by Bruno Haible)
1058 * fixed bug #361: the :FUNCTION initarg in the protocol for
1059 initialization of methods can now be used to override
1060 internally-produced optimized functions. (reported by Bruno
1062 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1063 system-provided lambda expression no longer cause warnings about
1064 unbound #:|pv-table| symbols.
1065 * bug fix: improved the handling of type declarations and the
1066 detection of violations for keyword arguments with non-constant
1068 * bug fix: potentially erronous calls to PATHNAME and
1069 MERGE-PATHNAMES were being flushed in some cases.
1070 (reported by Richard Kreuter)
1071 * bug fix: compiled calls to TYPEP were mishandling obsolete
1072 instances. (reported by James Bielman and Attila Lendvai)
1073 * bug fix: format strings with ~> without matching ~< no longer
1074 trigger an AVER, but signal an understandable error instead.
1075 (reported by Antonio Martinez)
1076 * bug fix: specifying an output-file without a pathname-type for
1077 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1078 of input-file instead of "fasl". (reported by Robert Dodier)
1079 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1080 (reported by James Y Knight).
1081 * bug fix: compiler-macros-function did not consider the environment
1082 argument for shadowing by local functions.
1083 * bug fix: compiler-macros expansion was inhibited by local INLINE
1085 * bug fix: inline expansions of known functions were subject to
1086 step-instrumentation in high debug policies, leading to problems
1087 with type-inference.
1088 * bug fix: compiler failed to differentiate between different CONS
1089 types in some cases.
1090 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1091 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1092 * bug fix: #368: incorrect use of expressed vs. upgraded array
1094 * bug fix: #306a: more precise unions of array types.
1095 * thread-safety improvements:
1096 ** CONDITION-WAIT could return early on Linux, if the thread was
1097 interrupted and subsequently continued with SIGCONT.
1098 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1100 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1101 * added support for the ucs-2 external format. (contributed by Ivan
1103 * minor incompatible change: pretty printing of objects of type
1104 (cons symbol) is, in the default pprint-dispatch-table, now
1105 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1107 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1108 called later in a class's lifetime, possibly as late as when the
1109 first instance of the class is created. Previously,
1110 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1111 class became finalizeable.
1112 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1113 for multibyte external-format streams. (thanks to "vbzoli")
1114 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1115 with :ALLOCATION :CLASS inherited from superclasses of the
1117 * fixed bug: anonymous classes can now be created using the :NAME
1118 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1119 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1120 * fixed bug: core-files saved with :EXECUTABLE T can again be
1121 executed when SBCL_HOME isn't set. (reported by James Knight)
1122 * fixed bug: toplevel LOCALLY forms with declarations could
1123 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1124 * fixed bug: printing from several different threads using different
1125 values of *print-case* could cause invalid output, due to
1126 some internal special variables of the printer not being bound
1127 thread-locally (reported by Max Mikhanosha)
1128 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1129 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1130 (reported by Pascal Costanza)
1131 * fixed bug: FINALIZE-INHERITANCE is called from
1132 REINITIALIZE-INSTANCE on classes when the class has previously
1133 been finalized, as required by AMOP.
1134 * minor code generation optimizations:
1135 ** better register allocation in CLOS dispatching functions
1136 ** overflow detection when coercing signed bytes to fixnums on x86-64
1137 ** is now implemented with one IMUL instruction instead of three shifts
1138 ** more efficient bit-vector access on x86 and x86-64
1139 ** more efficient access to raw structure slots on x86 and x86-64
1140 * fixed some bugs revealed by Paul Dietz' test suite:
1141 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1142 return its argument.
1144 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1145 * feature: thread support on Solaris/x86, and experimental thread support
1147 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1149 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1150 default method for SLOT-UNBOUND.
1151 * minor incompatible change: prevent the user from specializing the
1152 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1153 somewhat counter to the intent of the protocol, I (CSR) think, and
1154 additionally it just doesn't work in SBCL as currently
1155 implemented, thanks to optimizations (that are always valid for
1156 the other three SLOT-VALUEish functions, but not for the setter).
1157 * minor incompatible change: the :SB-LDB feature is now enabled by
1158 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1159 the low-level debugger.
1160 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1161 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
1162 down to an SB-SYS:FD-STREAM, allowing direct communication in
1163 more cases. Temporary files and pipes are still used as a fallback
1165 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1166 on the non-reentrant C functions localtime(3) and gmtime(3).
1167 * bug fix: global optimization policy was not visible in LOCALLY and
1169 * bug fix: class objects can be used as specializers in methods.
1170 (reported by Pascal Costanza)
1171 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1172 with a type error. (reported by blitz_ on #lisp)
1173 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1174 failed with a type error. (reported by Pascal Bourguignon)
1175 * bug fix: merging pathnames against defaults with :DIRECTORY
1176 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1177 (reported by James Y Knight)
1178 * bug fix: saving large (>2GB) cores on x86-64 now works
1179 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1180 constant index and a (simple-array (signed-byte 32)) array
1181 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1182 error (patch by Robert J. Macomber)
1183 * feature: TIME now displays the amount of run-time spent in GC
1184 * bug fix: The debugger now does a better job of respecting
1185 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1186 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1187 workaround for bug 403.)
1188 * bug fix: floating point exception handling now works on FreeBSD
1189 (thanks to NIIMI Satoshi)
1190 * fixed some bugs revealed by Paul Dietz' test suite:
1191 ** MISC.641: LET-conversion were not supposed to work in late
1193 * improvements to the Win32/x86 port:
1194 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1195 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1197 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1198 * new feature: source path information is generated for macro-expansion
1199 errors for use in IDE's like Slime (thanks to Helmut Eller)
1200 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1201 * bug fix: compiler does not loop forever on an invalid type in
1203 * improvement: compilation of most CLOS applications is significantly
1205 * optimization: added a limited bytecode compiler for simple toplevel
1206 forms, speeding up compilation and FASL loading
1207 * bug fix: the statistical profiler now properly distinguishes anonymous
1210 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1211 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1212 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1213 into subclasses of the finalized class. Now user calls to
1214 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1215 system return before any subclasses are finalized.
1216 * minor incompatible change: The reader no longer ignores errors
1217 regarding non-existent packages in #+ and #- feature tests.
1218 * new feature: command line options --no-sysinit, --no-userinit to
1219 inhibit loading the corresponding init files
1220 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1221 for sending data through UDP sockets (thanks to François-René Rideau)
1222 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1223 error is signalled instead (thanks to François-René Rideau)
1224 * minor incompatible change: Error signalling behaviour of lexical
1225 operations violating package locks has changed slightly. Refer to
1226 documentation on package locks for details.
1227 * enhancement: EVAL can process IF-expressions without resorting to the
1229 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1230 constant-folded properly due to missing out-of-line functions.
1231 (reported by Mika Pihlajamäki)
1232 * bug fix: LISTEN sometimes returned T even in cases where no data was
1233 immediately available from the stream
1234 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1235 were reversed. (reported by Levente Mészáros)
1236 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1237 when given a vector displaced to an adjustable array. (reported
1239 * bug fix: derivation of float boundaries from numbers outside the
1240 appropriate float range (reported by John Wiseman)
1241 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1243 * bug fix: precomputing cache entries for generic functions with
1244 some subclasses of specializers as yet invalid does not attempt to
1245 fill a cache line with a negative offset. (reported by Levente
1247 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1248 allow condition class objects as arguments to DOCUMENTATION and
1249 (SETF DOCUMENTATION); only find and set documentation for
1250 structure names for the STRUCTURE doc-type. (suggested by Gary
1252 * improvements to the Win32/x86 port:
1253 ** (user-homedir-pathname) and default initialization file
1254 locations now know about the user's "Documents and Settings"
1255 directory (thanks to Yaroslav Kavenchuk)
1256 ** run-program is implemented (thanks to Mike Thomas)
1257 ** sockets support (thanks to Timothy Ritchey)
1258 ** better backtrace support (thanks to Alastair Bridgewater)
1259 ** sb-grovel supported
1260 ** asdf-install and sb-posix work somewhat
1261 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1262 * improvements to the Solaris/x86 port:
1263 ** works on Solaris 11/Solaris Express
1264 ** floating-point exception handling support
1265 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1266 * fixed some bugs revealed by Paul Dietz' test suite:
1267 ** REMOVE-METHOD returns its generic function argument even when
1268 the method is not one of the generic functions' methods.
1269 ** objects declared as MEMBER types can be admissible arguments to
1270 structure accessors.
1271 ** printing characters should simply be printed by the FORMAT ~:C
1273 ** compiler failure when compiling functions with hairy constant
1274 defaults for optional parameters.
1275 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1276 function, which is already optimized.
1278 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1279 * new platform: experimental support for SBCL x86/Darwin, including
1280 MacOS X 10.4.5 on Intel.
1281 * new feature: Unicode character names are now known to the system
1282 (through CHAR-NAME and NAME-CHAR).
1283 * new feature: the filesystem location of SBCL's core file is
1284 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1285 * minor incompatible change: the contrib modules SB-POSIX and
1286 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1287 this change is to make it easier to distribute
1288 location-independent binaries.
1289 * bug fix: as implied by AMOP, standardized classes no longer have
1290 slots named by external symbols of public packages. (reported by
1292 * optimization: calling functions via constant symbols -- as in
1293 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1294 via the function object as in (FUNCALL #'FOO).
1295 * optimization: on x86 and x86-64, the calling convention for the
1296 case of dealing with an unknown number of values has been altered
1297 to be friendlier to the prediction heuristics implemented,
1298 particularly with reference to CALL and RET pairing. (thanks to
1299 Alastair Bridgewater)
1300 * optimization: on x86, the code for access to thread-local symbol
1301 values and binding/unbinding of thread-local symbols is smaller.
1302 (thanks to Alastair Bridgewater)
1303 * enhancement: CONSTANTP is now able to determine constantness of
1304 more complex forms, including calls to constant-foldable standardized
1305 functions and some special forms beyond QUOTE.
1306 * fixed bug: occasional GC crashes on Solaris/x86
1307 * optimization: x86-64 supports stack allocation of results of simple
1308 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1309 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1310 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1311 (thanks to James Knight)
1312 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1313 by the standard (thanks to Stephen Compall)
1315 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1316 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1317 be used for bundling the runtime and the core file into one
1318 executable binary. This feature is not currently supported on all SBCL
1319 platforms. (thanks to James Bielman and NIIMI Satoshi)
1320 * new feature: a generational or ephemeral garbage collector is now
1321 the default on the PowerPC platform (both Linux and Darwin). The
1322 old Cheney (stop and copy) collector is a build-time option.
1323 (thanks to Cyrus Harmon, after Raymond Toy)
1324 * minor incompatible change: the method by which SBCL finds its
1325 contributed modules has changed; it no longer relies on symbolic
1326 links from an $SBCL_HOME/systems directory, but searches directly
1327 in the subdirectories of $SBCL_HOME.
1328 * enhancement: the dynamic heap size on the Linux/PPC platform is
1329 markedly larger, even using the older Cheney garbage collector.
1330 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1331 certain complicated string types. (reported by Gary King)
1332 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1333 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1334 * fixed bug: DOCUMENTATION on structures no longer signals an
1335 error if no structure type of the right name exists. (reported by
1337 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1338 applicable non-standard primary or :AROUND method on
1339 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1340 no longer cause unbound variable errors. (reported by Kevin Reid)
1341 * fixed bug: metacircle resolution in cases where methods have slots
1342 added before the slots from STANDARD-METHOD. (reported by Jean
1344 * fixed bug: the Power PC assembly code for calling into lisp
1345 sometimes computed its return address wrongly (depending on the
1346 15th bit of the address, fixed at link time). This used to
1347 manifest itself in a segmentation violation while building PCL.
1348 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1349 many others over the years)
1350 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1351 the stack pointer (treated as a signed integer) is negative.
1352 (thanks to Peter van Eynde)
1354 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1355 * new platform: experimental support for the Windows operating
1356 system has been added. (thanks to Alastair Bridgewater)
1357 * fixed several bugs in and robustified the PPC FFI (including
1358 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1359 * bug fix: allow non-simple string symbol names (reported by Paul
1361 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1363 * bug fix: saving a core corrupted callbacks on x86/x86-64
1364 * bug fix: closed a loophole in metacircularity detection and
1365 grounding in the PCL implementation of CLOS.
1366 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1367 (reported by tomppa on #lisp)
1368 * bug fix: clear the direction flag on Lisp -> C transitions, as
1369 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1370 (reported by Andrej Grozin and Hendrik Maryns)
1371 * optimization: major improvements to GC efficiency on GENCGC platforms
1372 * optimization: faster implementation of EQUAL
1373 * optimization: emit more efficient opcodes for some common
1374 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1375 * optimization: several other minor code-generation improvements on x86-64
1376 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1378 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1379 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1380 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1381 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1382 by ANSI as a generic function, and for consistency (SETF
1383 GENERIC-FUNCTION-NAME) is treated likewise.
1384 * fixed bug #233.b: make constraint propagation notice when a variable
1385 value is changed after it is referenced but before it is used
1386 * fixed bug #296: no more arbitrary behaviour from filenames with
1387 odd characters as --load arguments. (reported by Adam Warner)
1388 * fixed bug #390: :CHARACTER-SET pathname components now work as
1389 expected. (reported by Tim Daly Jr)
1390 * fixed bug #391: complicated :TYPE intersections in slot
1391 definitions no longer cause an error in PCL internals.
1392 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1393 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1394 returning the number of octets which would be written to the
1395 file-stream. (thanks to Robert J. Macomber)
1396 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1397 arguments to the internal stream functions. (thanks to David
1399 * bug fix: stack exhaustion is now handled on the x86/SunOS
1400 platform. (thanks to Daisuke Homma)
1401 * bug fix: more accurate ROOM results on GENCGC platforms
1402 * optimization: improved type inference for arithmetic-for
1403 index variables in LOOP
1404 * optimization: faster floating-point SQRT on x86-64
1405 * fixed some bugs revealed by Paul Dietz' test suite:
1406 ** DOCUMENTATION returns NIL instead of "" for method combinations
1407 that don't have a docstring
1409 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1410 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1411 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1412 therefore are not customizeable by user code (as seems to be at
1413 least permitted and maybe required by AMOP). As a consolation,
1414 however, the SBCL implementation of these functions now calls
1415 REINITIALIZE-INSTANCE as specified by AMOP.
1416 * bug fix: slot-definition documentation is propagated as per ANSI
1417 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1418 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1419 argument, as do eslotd initialization methods. (from Pascal
1420 Costanza's "Closer" project)
1421 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1422 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1424 * bug fix: it is now possible to have more than one subclass of
1425 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1426 (reported by Bruno Haible, Pascal Costanza and others)
1427 * bug fix: the dependent update protocol now works for generic
1428 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1429 and Pascal Costanza)
1430 * bug fix: condition-class instances corresponding to
1431 DEFINE-CONDITION forms are now created eagerly. (reported by
1432 Kalle Olavi Niemitalo on comp.lang.lisp)
1433 * bug fix: floating point printing is more accurate in some
1434 circumstances. (thanks to Simon Alexander)
1435 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1436 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1437 * bug fix: callbacks on OS X now preserve stack-alignment.
1438 (thanks to Cyrus Harmon)
1439 * enhancement: the x86-64 disassembler is much better at
1440 disassembling SSE instructions. (thanks to Lutz Euler)
1441 * enhancement: CHECK-TYPE on a variable now allows type-inference
1442 (thanks to Vincent Arkesteijn)
1443 * optimization: improved performance of EUC-JP external format.
1444 (thanks to NIIMI Satoshi)
1445 * optimization: performance improvements to IO on file streams of
1446 :ELEMENT-TYPE CHARACTER
1447 * optimization: much faster memory allocation on x86-64
1448 * optimization: faster garbage collections (latency and throughput)
1450 * optimization: faster bignum subtraction and division on x86 and x86-64
1451 (thanks to Lutz Euler)
1452 * optimization: more accurate type-inference for loops that use a
1453 floating point index variable or a negative step.
1455 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1456 * bug fix: add a workaround to SBCL looping infinitely at startup on
1457 Linux kernels with apparently buggy implementations of personality().
1458 (thanks to Svein Ove Aas)
1459 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1460 (thanks to David Lichteblau)
1461 * bug fix: local bindings shadow global symbol macros for
1462 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1463 * optimization: non-open coded uses of numeric comparison operators
1464 (e.g. >) no longer cons when called with more than one parameter
1465 on platforms supporting dynamic-extent allocation.
1466 * enhancement: saving cores with foreign code loaded is now supported
1467 on MIPS/Linux in addition to the previously supported platforms.
1468 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1469 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1470 * bug fix: division by zero in sb-sprof when no samples were collected
1471 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1472 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1473 (thanks to Alexander Kjeldaas)
1474 * new feature: ignoring the return values of destructive functions
1475 like NREVERSE signals a compile-time style-warning.
1476 (thanks to Kevin Reid)
1477 * new feature: the alignment of alien structure fields can be
1478 explicitly specified. (thanks to Cyrus Harmon)
1479 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1480 and dump core on SIGQUIT
1482 ** incompatible change: threads do not inherit values of specials
1483 from their parents (see manual)
1484 ** bug fix: threads stacks belonging to dead threads are freed by the
1485 next exiting thread, no need to gc to collect thread stacks anymore
1486 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1487 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1488 ** bug fix: dynamic variable and thread start related gc lossage
1489 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1491 * fixed some bugs revealed by Paul Dietz' test suite:
1492 ** SUBTYPEP is slightly more accurate on heinously complicated
1493 CONS types where some of the members have uncertain (in the
1494 NIL, NIL sense) type relationships to each other.
1496 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1497 no longer purified unless :PURIFY T is explicitly specified.
1498 ** Non-purified cores are significantly smaller than before
1500 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1501 * new feature: timers based on Zach Beane's excellent timer package
1502 * added support for the following external formats: koi8-u,
1503 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1504 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1505 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1506 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1507 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1508 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1509 * incompatible change: a threaded SBCL will no longer revert to
1510 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1511 * bug fix: interrupts are disabled until startup is complete; no
1512 more sigsegvs when receiving a signal to soon
1513 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1515 * bug fix: add a workaround for the memory randomization features in
1516 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1517 workaround will only be in effect on systems with the proc filesystem
1519 * bug fix: printing objects of type HASH-TABLE signals a
1520 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1522 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1523 have been running for over 50 days. (reported by Gilbert Baumann)
1524 * bug fix: the logic for getting names of functions gets less
1525 confused when confronded with alternate-metaclass
1526 funcallable-instances. (reported by Cyrus Harmon)
1527 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1528 consistent, even on internal alternate-metaclass objects.
1529 * bug fix: flush closure information collected by physical
1530 environment analysis prepass before the main pass. (bug reported
1532 * bug fix: compiler pack phase does not modify a hashtable, which is
1533 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1534 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1535 may be expanded. (reported by Alexander <malishev> on c.l.l)
1536 * bug fix: no more style-warnings when compiling code using LAST
1537 under high-SPEED low-SPACE settings. (reported by David Wallin
1539 * fixed some incompatibilities between SBCL's MOP and the MOP
1541 ** the METAOBJECT class is now implemented;
1542 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1543 STANDARD-OBJECT, as required;
1544 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1545 now compatible (as required by VALIDATE-SUPERCLASS); there
1546 remains a consistency requirement over the presence or absence
1547 of the FUNCTION class in the superclass list of finalized
1548 classes; see the manual for more details;
1549 ** the :AROUND method for COMPUTE-SLOTS on
1550 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1551 requested slot ordering.
1553 ** bug fix: parent thread now can be gc'ed even with a live
1555 ** bug fix: binding a special with PROGV to no value is not
1556 the same as that symbol not having been bound (thanks to
1558 ** bug fix: binding specials is thread safe (thanks to
1560 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1561 and SB-SPROF do not die with 'no handler for signal XX in
1562 interrupt_handle_now(..)' anymore
1563 ** bug fix: WITH-TIMEOUT works with multiple running threads
1564 * fixed some bugs revealed by Paul Dietz' test suite:
1565 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1566 the :method-class keyword argument.
1568 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1569 * new port: the Solaris operating system on x86 processors is now
1570 mostly supported, though some rough edges in the environment
1571 remain. (thanks to Daisuke Homma)
1572 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1573 space for its heap. (thanks to Thiemo Seufer)
1574 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1575 closures. (thanks to Thiemo Seufer)
1576 * minor incompatible change: eof selects abort in the debugger.
1577 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1578 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1580 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1581 deprecated, and will go away in a future revision of SBCL.
1582 * minor incompatible change: GC-ON and GC-OFF are no longer
1583 implemented with a counter, it does not matter how many times gc
1584 is switched on or off
1585 * bug fix: discriminating functions for generic function classes
1586 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1587 make invalid assumptions about method precedence order. (reported
1589 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1590 platforms. (thanks to Thiemo Seufer)
1591 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1592 * bug fix: correct pathname printing with printer escaping is on.
1593 (thanks to Kevin Reid)
1594 * bug fix: complex VOP definitions in "user-space" no longer trigger
1595 package locks. (reported by Zach Beane)
1596 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1597 for funcallable-instance functions, and is no different from
1599 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1600 characters in the current readtable. (reported by Nicholas Neuss)
1601 * bug fix: SUBTYPEP on various CONS types returns more a more
1602 accurate acknowledgment of its certainty.
1603 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1604 lists in some cases. This partially fixes bug 384.
1605 * flush all standard streams before prompting in the REPL and the
1607 * bug fix: signal handling and triggering gc do not conflict
1608 directly anymore, in particular a high frequency sb-sprof does
1609 not prevent gc from running
1610 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1611 approximation for timezone and DST information between the
1612 universal time epoch and the smallest negative 32-bit time_t.
1613 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1614 year 1899 so long as the encoded time is non-negative.
1615 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1616 the correct answer for non-constant rotate amounts when performing
1617 an inline 32-bit rotation.
1619 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1620 there is only one thread in the session
1621 ** bug fix: memory leak for streams created in one thread and
1622 written to in another
1623 ** bug fix: lockup when compiled with gcc4
1624 ** bug fix: race that allows the gc to be triggered when gc is
1626 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1627 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1629 ** bug fix: finished threads are gc'ed properly
1630 * fixed some bugs revealed by Paul Dietz' test suite:
1631 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1632 has arguments with a different set of applicable methods from
1633 the orignal arguments.
1634 ** The type error thrown by MAP now has a correct expected-type
1636 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1637 name a compiled function.
1638 ** Three MISC tests where a large bignum was improperly coerced to
1639 a float that couldn't represent that bignum during type
1640 derivation were fixed.
1641 ** SUBTYPEP can now handle types involving the negation of a
1642 list-form FUNCTION type.
1643 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1644 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1645 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1647 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1648 * New feature: Experimental support for bivalent streams: streams
1649 opened with :element-type :default now allow character and binary
1650 (unsigned-byte 8) I/O
1651 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1652 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1654 * bug fix: no more highly sporadic "couldn't check whether ~S is
1655 readable" when reading a stream and an interrupt hits in the middle
1656 of a select system call
1657 * compiler better recognizes complex arrays (reported by Eduardo
1659 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1660 for variables on SBCL built with linkage-tables. (reported by Luis
1662 * various error reporting improvements.
1663 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1664 (Thanks to Thiemo Seufer)
1665 * bug fix: nested reader invokations work correctly
1666 * bug fix: it is possible to have simultaneous references to foreign
1667 code and foreign data with the same name.
1669 ** added x86-64 support
1670 ** incompatible change: the threading api now works with thread
1671 objects instead of thread ids
1672 ** bug fix: threads are protected from signals and interruption when
1673 starting up or going down
1674 ** bug fix: a race where an exiting thread could lose its stack to gc
1675 ** bug fix: don't halt on infinite error in threads if possible
1676 ** fixed numerous gc deadlocks introduced in the pthread merge
1677 ** bug fix: fixed thread safety issues in read and print
1678 ** bug fix: debugger doesn't hang on session lock if interrupted at
1679 an inappropriate moment
1680 ** bug fix: run-program is now thread safe(r)
1681 ** bug fix: inner with-recursive-lock no longer releases the mutex
1682 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1683 * fixed some bugs revealed by Paul Dietz' test suite:
1684 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1685 EXPECTED-TYPE slots filled.
1686 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1688 ** MAKE-CONDITION accepts classes as type-designators.
1689 ** COMPILE may never return NIL.
1690 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1691 range before calling Unix time functions
1693 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1694 * numerous signal handling fixes to increase stability
1695 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1696 * minor incompatible change: we now correctly canonize default
1697 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1698 as per the MOP, rather than the historical (INITARG INITFUNCTION
1699 INITFORM). (reported by Bruno Haible)
1700 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1701 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1702 for more information.
1703 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1704 pathname is a directory pathname.
1705 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1706 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1708 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1709 :METACLASS argument in addition to a class name. (reported by
1710 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1711 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1712 (reported by Bruno Haible; patch from Gerd Moellmann)
1713 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1715 * bug fix: more cleanups to the floating point exception handling on
1716 x86-64 (thanks to James Knight)
1717 * bug fix: the compiler does not try to constant fold calls of
1718 COERCE and BIT-* functions when they return freshly constructed
1719 objects. (reported by Nikodemus Siivola and Paul Dietz)
1720 * optimization: improved the MIPS versions of generic (in the
1721 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1722 * optimization: direct conversion of (unsigned-byte 32) to floats on
1723 the PowerPC platform.
1724 * optimization: structure instances with raw slots now use less
1725 memory, and probably show better memory locality. (thanks to
1727 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1728 are treated as requests for stack allocation on the x86-64,
1729 Alpha-32, PPC and SPARC platforms.
1730 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1731 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1732 (thanks to Tony Martinez)
1734 ** gcing a dead thread can no longer lead to lockups
1735 ** threads block signals until they are set up properly
1736 ** errno is no longer shared by threads
1737 ** interrupt-thread restores the eflags register on x86
1738 ** fixed some lockups due to gc/thread interaction
1739 * fixed some bugs revealed by Paul Dietz' test suite:
1740 ** invalid dotted lists no longer raise a read error when
1741 *READ-SUPPRESS* is T
1742 ** signal an error if a symbol that names a declaration is used
1743 as the name of a type, or vice versa
1744 ** allow using the (declare (typespec var*)) abbreviation for
1745 (declare (type typespec var*)) with all type specifiers
1746 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1747 ** always return NIL from PPRINT-POP when OBJECT is NIL
1748 ** don't signal errors when pretty-printing malformed LABELS,
1749 FLET or MACROLET forms
1750 ** declarations in a DOLIST body are also in scope for the
1752 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1754 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1757 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1758 * fixed cross-compiler leakages that prevented building a 32-bit
1759 target with a 64-bit host compiler.
1760 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1761 opened with :IF-EXISTS :OVERWRITE.
1762 * fixed bug 281: error for an invalid qualifier in a short-form method
1763 combination method is not signalled until the faulty method is called.
1764 * bug fix: iteration variable type inferrer failed to deal with open
1765 intervals. (reported by Alan Shields)
1766 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1767 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1768 or more runtime options were provided to the sbcl binary.
1769 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1770 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1771 * optimization: there's now a fast-path for fixnum arguments in the
1772 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1773 * optimization: the code generated on x86-64 is more compact thanks
1774 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1775 * bug fix: floating-point exception handling now partly works on
1776 x86-64. (Thanks to James Knight)
1777 * improvement to the MIPS backend from Thiemo Seufer: C-style
1778 64-bit long long arguments and return values to alien functions
1780 * fixed some bugs revealed by Paul Dietz' test suite:
1781 ** the type-error signalled from WARN has a filled-in DATUM slot.
1782 ** the type-error required when a stream is not associated with
1783 a file has the stream as its datum.
1784 ** type-errors on single-floats on x86-64 no longer have
1785 :INVALID-OBJECT as the datum
1786 ** the type-errors signalled for invalid function names now have
1787 a correct expected type
1788 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1789 for structures defined with a :TYPE. Documentation strings for
1790 typed structures are no longer immediately discarded
1791 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1792 broadcast streams and synonym streams. FILE-LENGTH now also works
1793 on broadcast streams.
1795 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1796 * incompatible change: the --noprogrammer option, deprecated since
1797 version 0.7.5, has been removed. Please use the equivalent
1798 --disable-debugger option instead.
1799 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1801 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1802 inoperational for a while now) has been completely removed.
1803 * null lexical environments are now printed as #<NULL-LEXENV>,
1804 significantly reducing the amount of clutter in typical backtraces.
1805 * documentation on weak pointers, finalization, and after GC hooks
1806 has been added to the manual.
1807 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1808 as other specialized array types, is much faster. SUBSEQ and
1809 COPY-SEQ on such arrays have also been sped up.
1810 * optimization: EQL is now more efficient when at least other argument
1811 is known to be of type (OR FIXNUM (NOT NUMBER)).
1812 * fixed bug: the runtime is now less vulnerable to changes in the
1813 size of the SBCL object on OS X, and virtual memory is reserved for
1814 all spaces that need to be at a fixed address.
1815 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1816 * fixed bug: finalizers and after GC hooks that cause consing are now
1818 * fixed bug: compiler error messages and summaries are now printed to
1819 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1820 * fixed inference of the upper bound of an iteration variable.
1821 (reported by Rajat Datta).
1822 * fixed bug 211e: calling local functions with duplicated constant
1823 keyword argument no longer causes a bogus style warning about an
1825 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1826 ftype declaration to be disregarded. (reported by Dave Roberts)
1827 * fixed bug 373: caused by erronous compilation of references to alien
1828 variables in the runtime on ppc/darwin.
1829 * fixed bug 376: CONJUGATE type deriver.
1830 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1831 (reported by Baughn on #lisp)
1832 * a cross-compiler bug on non-x86 platforms has been identified and
1833 fixed. (thanks to Bruno Haible)
1834 * improvements to the MIPS runtime code for increased stability.
1835 (thanks to Thiemo Seufer)
1836 * increased the maximimum compact environment size to allow
1837 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1838 * partial workaround for bug 135: don't name the function we're
1839 calling for hairy cases of EVAL, so as not to accumulate one environment
1840 entry per call to EVAL. (reported by Kevin Reid)
1841 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1842 * optimization: type testing for non-vector arrays should be faster.
1843 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1845 * bug fix: setting 31st element of a bit vector to zero did not work
1847 * bug fix: redefining a class definition which failed due to a
1848 previous accessor / function clash now works (but see BUGS entry
1849 #380 for more problems in this area). (thanks to Zach Beane)
1850 * the long form of DEFINE-METHOD-COMBINATION disables method group
1851 checking when given a single method group with pattern *. (thanks
1853 * on x86 compiler supports stack allocation of results of simple
1854 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1855 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1856 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1857 * fixed some bugs related to Unicode integration:
1858 ** the restarts for recovering from input and output encoding
1859 errors only appear when there is in fact such an error to
1861 * fixed some bugs revealed by Paul Dietz' test suite:
1862 ** MISC.549 and similar: late transformation of unsafe type
1863 assertions into derived types caused unexpected code
1865 ** SCALE-FLOAT type deriver is less wrong.
1866 ** type derivers for EXP, LOG and similar functions compute result
1867 types for complex arguments better.
1868 ** (MISC.563) CONJUGATE type deriver works for very restricted
1870 ** out-of-line type testers for character strings are available.
1871 ** EQUAL compiler transform understands specialness of objects
1873 ** accessing double-floats stored on the stack now works on x86-64.
1874 ** debugger internals could sometimes create invalid lispobjs,
1875 resulting in GC crashes.
1876 ** MISC.548: type check weakening can convert required type into
1878 ** initialization forms for bindings are not in scope of free special
1881 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1882 * incompatible change: thread support for non-NPTL systems has
1883 been removed - locking is buggy and unreliable. A threaded
1884 SBCL build will now warn at startup and refuse to create
1885 new threads, unless futex support is detected in the kernel
1886 * incompatible change: the top level REPL now has only an ABORT
1887 restart associated with it, not TOPLEVEL and ABORT as it used to.
1888 TOP and TOPLEVEL are now available as debugger commands for
1889 returning to the top level.
1890 * incompatible change: forms evaluated in the REPL now use the
1891 global optimization policy.
1892 * incompatible change: user- and system-initialization files are
1893 no longer processed with LOAD, but by READ and EVAL; hence the
1894 global optimization policy, startup package, readtable, etc,
1896 * The .fasl file format number has been incremented because of
1897 various incompatible changes.
1898 * internal entry point details and argument counts no longer appear
1899 in backtraces unless explicitly requested by setting
1900 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1901 * built-in and standard functions no longer have names like "top
1902 level local call to FOO".
1903 * fixed bug 32: functions defined in non-null lexical environments
1904 now have more legible printed representation
1905 * fixed bug 33: functions defined in non-null lexical environemnts
1906 are now more amenable to inspection by INSPECT.
1907 * workaround for bug 354: XEPs no longer appear in backtraces unless
1908 explicitly requested.
1909 * fixed bug: receiving the signal which results from attempting to
1910 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1911 SIGBUS on other *BSDs) on architectures where the C stack is also
1912 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1913 to debugger confusion or wild instability. (reported by Cheuksan
1915 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1916 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1917 (reported by Lutz Euler)
1918 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1919 compiled code. (reported by Paul Dietz)
1920 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1921 specialized parameter to a method to something that is not TYPEP
1922 the specializer is now possible.
1923 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1924 face of package deletion.
1925 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1926 pathname. (reported by David Tolpin on c.l.l)
1927 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1928 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1929 STRING-STREAM and FILE-STREAM, respectively.
1930 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1931 than previously; in addition, its test suite is now run on build.
1932 (thanks to Luke Gorrie)
1933 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1934 * optimization: added a immediate representation for single-floats
1936 * fixed some bugs revealed by Paul Dietz' test suite:
1937 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1938 ** attempting to create a package with a colliding nickname causes
1939 correctable errors to be signalled.
1940 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1941 ** several x86-64 backend bugs related to sign-extension of immediate
1944 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1945 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1946 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1948 * fixed loading of multiply forward-referenced layouts.
1949 (thanks to Cheuksan Wang)
1950 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1951 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1952 (see COMPILE-FILE documentation for details of :PRINT option)
1953 * fixed bugs 19 and 317: fixed-format floating point printing is
1954 more accurate. This also fixes a bug reported by Adam Warner
1955 related to the ~@F format directive.
1956 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1958 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1959 dispatch table if the from-char is a dispatch macro character.
1960 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1961 by the wordsize no longer ignore the last word. (reported by Lutz
1963 * fixed bug in type checking of dynamic-extent variables. (reported
1965 * optimization: sequence traversal functions use their freedom to
1966 coerce function designators to functions.
1967 * optimization: code with many calls to CLOS methods specialized on
1968 CLOS classes has had redundant type checks removed.
1969 * optimization: added declarations to speed up operations that access
1970 the internal character database (for example STRING-UPCASE)
1971 * optimization: comparison operations between floats and sufficiently small
1972 fixnums no longer create extra rationals
1973 * fixed some bugs related to Unicode integration:
1974 ** portions of multibyte characters at the end of buffers for
1975 character-based file input are correctly transferred to the
1976 start of the buffer at the next read.
1977 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1978 passing it through to OPEN.
1979 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1980 argument given to internal calls to OPEN.
1981 ** the built-in comment readers (introduced by character sequences
1982 ";" and "#|") are more forgiving to encoding errors; they will
1983 STYLE-WARN and then attempt to resync the stream at a character
1984 boundary. (thanks to Teemu Kalvas)
1985 * fixed some bugs in the x86-64 port:
1986 ** Negative short int return values from c-calls are sign-extended
1988 ** The stack is aligned to 16-bytes for c-calls, as required by
1989 the ABI. (thanks to Cheuksan Wang)
1990 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1991 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1992 for enums. (thanks to Vincent Arkesteijn)
1993 ** Multiple small optimizations and bugfixes for floating point
1995 * fixed some bugs revealed by Paul Dietz' test suite:
1996 ** Space, Tab, Linefeed, Return and Page have the invalid
1997 secondary constituent character trait.
1998 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2000 ** WITH-INPUT-FROM-STRING should only update the index place on
2002 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2003 works more reliably.
2004 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2005 with one-dimensional arrays with fill pointers.
2006 ** TYPE-OF failed on a complex with an integer realpart and a
2008 ** compiler failure during type inference for the code of form
2009 (IF (EQL X (THE ...)) ...) (MISC.535).
2011 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2012 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2013 platform. The port supports 61-bit fixnums, large memory spaces
2014 and reloading shared object files.
2015 * enhancement: saving cores with foreign code loaded is now
2016 supported on ppc/Darwin in addition to the previously supported
2018 * enhancement: the statistical profiler now walks deeper into the
2019 call stack for more meaningful call-graphs and accrued time
2020 reports (x86/x86-64 only). It also now reports time spent in
2022 * enhancement: it is now possible to trace most individual methods
2023 of a generic function in addition to tracing the generic function
2025 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2027 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2028 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2029 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2030 produces an error. (thanks to Vincent Arkesteijn)
2031 * bug fix: NAMESTRING on pathnames with :WILD components in their
2032 directories works correctly. (thanks to Artem V. Andreev)
2033 * fixed bug 125: compiler preserves identity of closures. (reported
2035 * bug fixed: functions with &REST arguments sometimes failed with
2036 "Undefined function" when compiled with (DEBUG 3). (reported by
2038 * bug fix: overflow during compiling of setting element of a bit
2039 vector with constant index and value. (reported by Timmy Douglas)
2040 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2041 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2042 * on x86 compiler partially supports stack allocation of dynamic-extent
2044 * GO and RETURN-FROM do not check the extent of their exit points
2045 when compiled with SAFETY 0.
2046 * fixed some bugs related to Unicode integration:
2047 ** encoding and decoding errors are now much more robustly
2048 handled; it should now be possible to recover even from invalid
2049 input or output to the terminal. (thanks to Teemu Kalvas)
2050 ** provided a first cut at implementing STRING-TO-OCTETS and
2051 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2052 ** altered the SB-MD5 contributed module slightly, changing the
2053 interface just enough for it to be supportable for builds where
2054 lisp characters are not eight bits.
2055 * fixed some bugs revealed by Paul Dietz' test suite:
2056 ** the FORMATTER-generated functions for ~V[ conditionals require
2057 the correct number of arguments.
2058 ** READ-FROM-STRING returns the mandated second value when applied
2059 to displaced strings.
2060 ** the #\Rubout and #\Backspace characters are treated as invalid
2061 constituent characters by the tokenizer.
2063 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2064 * new feature: reloading changed shared object files with
2065 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2066 * new feature: references to foreign variables and functions
2067 can now be compiled and loaded before the corresponding shared
2068 object file is loaded, as long as the foreign definitions are
2069 available at runtime.
2070 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2071 supported. (thanks to Dan Debertin)
2072 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2073 just keywords. (thanks to Vincent Arkesteijn)
2074 * fixed bug #331: structure-class instances corresponding to
2075 DEFSTRUCT forms are now created eagerly.
2076 * fixed bug #345: backtraces from calls to undefined functions work
2077 on x86 as well. Related bug #61 is now also partially fixed on x86
2078 (backtraces from throws to unknown catch tags.)
2079 * bug fix: lambda-list parsing is now stricter vrt. order and number
2080 of lambda-list keywords.
2081 * bug fix: as specified by AMOP, an error is signalled if a
2082 class-option appears multiple times in a DEFCLASS form. (reported
2084 * bug fix: RANDOM can be compiled when the compiler derives the type
2085 of its numeric argument as a disjoint set of small integers.
2086 (reported by Paul Dietz)
2087 * bug fix: starting a core saved with shared objects loaded when
2088 those objects are not available no longer causes threaded SBCL to
2089 hang. (reported by Sean Ross)
2090 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2092 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2093 argument, which must always be NIL. (reported by Kalle Niemitalo)
2094 * bug fix: printing 1.0d+23 no longer results in an error.
2095 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2096 * bug fix: structure slot setters preserve evaluation order. (thanks
2098 * fixed some bugs related to Unicode integration:
2099 ** RUN-PROGRAM can allow its child to take input from a Lisp
2100 stream. (reported by Stefan Scholl)
2101 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2102 locales. (reported by Ken Causey)
2103 * fixed some bugs revealed by Paul Dietz' test suite:
2104 ** INCF, DECF and REMF evaluate their place form as specified in
2106 ** FORMATTER expands ~{ ~} iteration directives with V or #
2107 parameters correctly.
2108 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2109 consequent uses no arguments correctly.
2110 ** the system has a partial understanding of the (COMPLEX RATIO)
2112 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2115 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2116 * new feature: a build-time option (controlled by the :SB-UNICODE
2117 keyword feature, enabled by default) for building the system with
2118 support for the entire 21-bit character space defined by the
2120 * new feature: the system now has rudimentary external-format
2121 support; the primary user-visible change at this time is that
2122 characters with the high bit set (such as lower-case-e-acute) will
2123 print correctly to a terminal in a UTF-8 environment.
2124 * minor incompatible change: BASE-CHAR no longer names a class;
2125 however, CHARACTER continues to do so, as required by ANSI.
2126 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2127 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2128 has been moved to the SB-EXT package (temporarily re-exported from
2130 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2131 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2133 * fixed bug #351: better error-handlind and reporting for malformed
2135 * fixed bug #350: bignum-printing is now more memory-efficient,
2136 allowing printing of very large bignums, eg. (expt 2 10000000).
2137 (reported by Bruno Haible)
2138 * fixed bug #302: better primitive-type selection for intersection
2140 * fixed bug #308: non-graphic characters now all have names, as
2141 required. (reported by Bruno Haible)
2142 * bug fix: redefining a class with different superclasses now correctly
2143 removes it from the direct-subclasses of its previous superclasses.
2144 (reported by David Morse)
2145 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2146 new value now works. (reported by Bruno Haible)
2147 * bug fix: correct canonicalization of multiple non-standard slot
2148 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2149 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2150 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2151 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2152 now exists, an signals an error.
2153 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2154 during macroexpansion for non-iteration variables as well. (reported
2155 by Bruno Haible for CMUCL)
2156 * bug fix: Cyclic structures and unprintable objects in compiler
2157 messages no longer cause errors. (reported by Bruno Haible)
2158 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2159 and READ-FROM-STRING all now return a primary value of NIL if
2160 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2161 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2162 (reported by Bruno Haible for CMUCL)
2163 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2164 do not designate a condition. (reported by Bruno Haible for
2166 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2167 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2168 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2169 permitting resolution in favour of any of the conflicting symbols.
2170 (reported by Bruno Haible for CMUCL)
2171 * bug fix: EQUAL compiler optimizations is less aggressive on
2172 strings which can potentially compare true despite having distinct
2173 specialized array element types.
2174 * bug fix: unit enumerations can be defined without dividing by
2175 zero. (thanks to Vincent Arkesteijn)
2176 * FORMAT compile-time argument count checking has been enhanced.
2177 (report from Bruno Haible for CMUCL)
2178 * a partial workaround for the bug 262: the compiler does not try to
2179 inline-expand a local function doing RETURN-FROM from a deleted
2180 BLOCK. (thanks to Peter Denno for the bug report and to David
2181 Wragg for the simple test case)
2182 * fixed some bugs revealed by Paul Dietz' test suite:
2183 ** RENAME-PACKAGE allows all package designators as new package
2185 ** constraint propagation and lambda variable substitution are
2186 more cautious in dealing with partially deleted code.
2187 ** compiler sometimes lost reoptimization passes.
2188 ** CERROR, given a condition as condition designator, passes its
2189 remaining arguments to the continue format control without
2191 ** Case-altering FORMAT directives work correctly on non-ASCII
2193 ** The REAL type specifier handles bounds outside the floating
2194 point ranges without signalling FLOATING-POINT-OVERFLOW.
2195 ** Functions with IR1-transformations can create intercomponent
2196 references to global functions.
2197 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2199 ** FORMAT ~R treats a nil value for its first parameter correctly.
2201 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2202 * enhancement: saving cores with foreign code loaded is now
2203 supported on x86/NetBSD and sparc/Linux in addition to the previously
2204 supported platforms.
2205 * bug fix: on some platforms repeated installations caused multiple
2206 copies of HTML documentation to be installed -- should not happen
2207 any more. (reported by Stefan Scholl)
2208 * bug fix: parsing self-recursive alien record types multiple times
2209 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2210 original patch by Helmut Eller for CMUCL)
2211 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2212 (thanks to Richard Kreuter)
2213 * bug fix: defining classes whose accessors are methods on existing
2214 generic functions in other (locked) packages no longer signals
2215 bogus package lock violations. (reported by François-René Rideau)
2216 * bug fix: special variables as DEFMETHOD parameters no longer have
2217 associated bogus type declarations. (reported by David Wragg and
2219 * bug fix: read-write consistency on streams of element-type
2220 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2221 * bug fix: redefiniton of the only method of a generic function with
2222 no DEFGENERIC no longer emits a full WARNING. In addition,
2223 redefinition of generic functions with no DEFGENERIC to an
2224 incompatible lambda list now signals an error. (thanks to Zach
2226 * bug fix: DEFGENERIC now works even when there's a function of the
2227 same name in an enclosing lexical environment. (thanks to Zach
2229 * fixed compiler failure, caused by instrumenting code during
2230 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2231 * optimization: added loop analysis and improved register allocation
2232 * fixed some bugs revealed by Paul Dietz' test suite:
2233 ** POSITION on displaced vectors with non-zero displacement
2234 returns the right answer.
2235 ** (SIMPLE-STRING) is a valid type specifier for sequence
2237 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2239 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2240 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2242 ** The justification version of the FORMAT ~< directive treats
2243 non-zero minpad parameter correctly.
2245 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2246 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2247 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2248 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2249 the supported interface.
2250 * new feature: Single-stepping of code compiled with DEBUG 2 or
2251 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2252 * new feature: saving cores with foreign code loaded is now
2253 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2254 Timothy Moore's work for CMUCL)
2255 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2256 parameters to * instead of NIL if no initform is supplied.
2257 (reported by Johan Bockgaard)
2258 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2259 correctly when FUNCALL appears as the car of the form. Note:
2260 despite this FUNCALL forms are not currently subject to
2261 compiler-macro expansion. (port of Raymond Toy's fix for the
2262 same from CMUCL, reported by Johan Bockgaard)
2263 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2264 (thanks for Teemu Kalvas)
2265 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2266 case instead of terminating the iteration (thanks for Julian
2267 Squires, Sean Champ and Raymond Toy)
2268 * bug fix: incorrect expansion of defgeneric that caused a style
2269 warning. (thanks for Zach Beane)
2270 * bug fix: slot accessor effective method computation works properly
2271 for classes with multiple non-standard applicable methods on
2272 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2273 * on x86 compiler supports stack allocation of results of LIST and
2274 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2275 CMUCL implementation by Gerd Moellmann)
2276 * fixed some bugs revealed by Paul Dietz' test suite:
2277 ** FORMAT strings with both the ~<~:;~> form of the justification
2278 directive and pretty-printing directives cause an error.
2280 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2281 * incompatible change: the internal functions
2282 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2283 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2284 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2285 instead of the old functions.
2286 * new feature: on platforms where "dladdr" is available foreign
2287 function names now appear in backtraces. (based on Helmut Eller's
2289 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2290 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2292 * documentation: ASDF manual is now distributed with SBCL.
2293 * bug fix: SBCL can now load its contributed modules with REQUIRE
2294 even if the system-provided entries have been removed from
2295 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2297 * bug fix: backtraces involving undefined functions or assembly
2298 routines are more informative. (thanks to Brian Downing)
2299 * bug fix: mutually referent alien structures now work correctly.
2300 (reported by Rick Taube)
2301 * bug fix: structures defined by WITH-ALIEN can be referred to
2302 within other definitions in the same WITH-ALIEN.
2303 * bug fix: division operators (MOD, TRUNCATE and the like) with
2304 constant zero divisors and integer dividends no longer generate
2306 * bug fix: provide default methods for INPUT-STREAM-P and
2307 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2308 * bug fix: improve the detection and resolution of MOP metacycles
2309 (where effective method computation depends on the generic function
2310 having its effective method computed). (reported by Bruno Haible)
2311 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2312 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2313 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2314 * bug fix: pathnames with relative directory components can be
2315 represented relative to default pathnames.
2316 * optimization: in taking the GCD of bignums, reduce the two bignums
2317 to approximately the same size (using Euclid's algorithm) before
2318 applying the more sophisticated binary GCD. (thanks to Juho
2320 * optimization: COUNT on bitvectors now operates word-at-a-time.
2321 * optimization: ASH with a positive, but not necessarily constant,
2322 (leftwards) shift, when in a modular context, is compiled to a
2324 * fixed some bugs revealed by Paul Dietz' test suite:
2325 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2326 if the corresponding argument is NIL.
2327 ** FORMAT directives accepting a minpad parameter treat negative
2329 ** literal commas as character parameters to FORMAT directives are
2331 ** literal spaces directly after ~<Newline> directives within a
2332 format-logical-block (~:< ~@:>) do not induce :FILL-style
2333 conditional newlines.
2334 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2335 as specified: it no longer includes conditional newlines).
2336 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2338 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2339 :PER-LINE-PREFIX argument does not evaluate to a string.
2341 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2342 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2343 the manual for details; for now, package locks can be disabled by
2344 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2345 if no major problems are found then it is likely that they will be
2346 compiled in unconditionally.
2347 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2348 unsupported operators on all platforms. To load a shared library
2349 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2350 object file, link it into a shared library outside of SBCL and
2351 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2353 * bug workaround: ROOM T and the GC were not working together
2354 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2355 reporting facility aren't preserved. That reporting has been
2356 disabled, so now until and unless someone figures out how to make it
2357 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2358 * minor incompatible change: as threatened around sbcl-0.8.0, the
2359 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2360 The symbols are also exported from SB-PCL for backwards
2361 compatibility, but more so than before SB-PCL should be treated as
2362 an implementation-internal package.
2363 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2365 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2366 It is known as of this release not to work on the Alpha, however.
2367 * fixed bug #167: errors signalled due to illegal syntax in method
2368 bodies are now more legible.
2369 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2370 designators and can hence be used with TYPEP.
2371 * fixed bug #333: CHECK-TYPE now ensures that the type error
2372 signalled, if any, has the right object to be accessed by
2373 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2374 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2375 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2377 * fixed bug #334: programmatic addition of slots using specialized
2378 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2379 and :ALLOCATION :CLASS slots.
2380 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2381 float exponents. (rereported by Peter Seibel)
2382 * fixed a bug: #\Space (and other whitespace characters) are no
2383 longer considered to be macro characters in standard syntax by
2384 GET-MACRO-CHARACTER.
2385 * fixed bug: initialization of condition class metaobjects no longer
2386 causes an instance of the condition to be created. (reported by
2388 * fixed bug: it is now possible to have slots such that
2389 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2390 description is neither :INSTANCE nor :CLASS.
2391 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2392 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2393 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2394 non-standard SLOT-DEFINITION-ALLOCATION values.
2395 * fixed bugs: various race conditions handling exiting threads.
2396 CL-PPCRE's thread torture test now passes.
2397 * fixed arguably-a-bug: GC time proportional to number of threads in
2398 system even when most of them are idle
2399 * optimization: improved performance of BIT and SBIT on bit-vectors.
2400 * .fasl file incompatibility: The fasl file version number has
2401 been incremented because of changes associated with package locks.
2403 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2404 * minor incompatible change: the system no longer provides
2405 optimization hints (conditions which are TYPEP
2406 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2407 mode; these hints are still emitted when higher SPEED optimization
2409 * new contrib module: a sampling profiler (profiling by statistical
2410 sampling, rather than by instrumenting functions) is available as
2411 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2412 * the behaviour of the standard function ED is now customizeable by
2413 third parties through a hook variable: see ED's documentation
2414 string for information on the protocol.
2415 * the compiler no longer emits efficiency notes for (FUNCALL X)
2416 when the type of X is uncertain under default optimization
2418 * fixed bug 276: mutating a binding of a specialized parameter to a
2419 method to something that is not TYPEP the specializer is now
2421 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2422 exhibit the required behaviour on the x86 platform. (thanks to
2423 Peter van Eynde, Eric Marsden and Bruno Haible)
2424 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2425 even for difficult arguments. (reported by Peter Graves)
2426 * fixed bug 141a: the backquote printer now descends quoted
2428 * fixed another bug in backquote printing: no more destructive
2429 modification of the form's list structure. (reported by Brian
2431 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2432 move between its address being taken and the call to
2433 interrupt_thread, fixing a crashing race condition.
2434 * the SB-POSIX contrib implementation has been adjusted so that it
2435 no longer exhibits ridiculously poor performance when constructing
2436 instances corresponding to C structs.
2438 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2439 * minor incompatible change: the sb-grovel contrib now treats C
2440 structures as alien (in the sense of SB-ALIEN) objects rather than
2441 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2442 has implications for memory management of client code
2443 (sb-grovel-returned objects must now be manually managed) and for
2444 type safety (alien objects now have full types).
2445 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2446 used to control emission of compiler diagnostics, rather than the
2447 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2448 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2449 quality should be considered deprecated.
2450 * install.sh now installs the user manual as well
2451 * (not quite a new documentable feature, but worth considering in
2452 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2453 beginnings of a semantically meaningful condition hierarchy is
2454 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2456 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2457 designator as the defaults argument.
2458 * fixed bug: Displaced arrays whose displaced-to array has become
2459 too small now cause ARRAY-DIMENSION to signal an error, providing
2460 for safer bounds-checking. (reported by Bruno Haible)
2461 * fixed bug: DEFCLASS slot definitions with identical :READER and
2462 :WRITER names now signal a reasonable error. (reported by Thomas
2464 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2466 * fixed bug: Invalid slot specification errors now print correctly.
2467 (thanks to Zach Beane)
2468 * fixed bug 320: Shared to local slot value transfers in class
2469 redefinitions now happen corrently from superclasses as
2470 well. (reported by Bruno Haible)
2471 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2473 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2474 improper lists correctly. (reported by Bruno Haible)
2475 * fixed bug 313: source-transform for <fun-name> was erroneously
2476 applied to a call of a value of a variable with name <fun-name>.
2477 (reported by Antonio Menezes Leitao)
2478 * fixed bug 307: The obsolete instance protocol ensures that
2479 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2480 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2481 remove dead unknown-values globs from the middle of the stack.
2482 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2483 easier to resume long computations after using *BREAK-ON-SIGNALS*
2484 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2485 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2486 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2487 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2488 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2489 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2491 * fixed a (fairly theoretical) bug in string printing: if
2492 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2493 does not have array-element-type equal to the most general string
2495 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2496 function name. (thanks to Nikodemus Siivola)
2497 * fixed bug: compile-time format string checker failed on
2498 non-closed ~{. (reported by Thomas F Burdick)
2499 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2500 don't warn on legal loop code involving more than one aggregate
2501 boolean. (thanks to Nikodemus Siivola)
2502 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2503 in keyword position to MAKE-PACKAGE was not being reported as
2505 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2506 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2508 * fixed bugs 280 and 312: the checking for multiple definitions in a
2509 file is less likely to become confused by uses of inline
2511 * fixed bug: the #S reader macro performs the keyword coercion
2512 specified for slot names. (reported by Kalle Niemitalo)
2513 * fixed bug: lambda lists may contain symbols whose names start with
2514 & but are not lambda-list-keywords; their occurrence triggers a
2516 * fixed bug 321: define-method-combination argument lambda lists do
2517 not cause invalid code to be generated when &optional or &aux
2518 variables have default values. (reported by Bruno Haible)
2519 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2520 have CLOS classes; this appears also to have fixed reported
2521 instability in stack exhaustion detection.
2522 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2523 MUFFLE-WARNING when no associated restart is present is now
2525 * optimization: rearranged the expansion of various defining macros
2526 so that each expands into only one top-level form in a
2527 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2529 * optimization: used a previously little-used slot in symbols to
2530 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2532 * fixed some bugs revealed by Paul Dietz' test suite:
2533 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2535 ** Fixed an optimization bug related to inheritance of initforms
2536 from local to shared slots.
2537 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2538 ** CAST optimizer forgot to flush argument derived type.
2539 ** print/read consistency on floats is now orders of magnitude
2540 more likely. (thanks also to Bruno Haible for a similar report
2542 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2543 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2544 for objects of type REAL. Make it so.
2545 ** SXHASH is specified (infelicitously) to respect similarity,
2546 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2547 it so. (thanks to Markus Ziegler)
2548 ** on the Alpha, the compiler succeeds in compiling functions
2549 returning a known number of arguments greater than 63.
2550 ** fixed handling of invalid NIL arguments in keyword position
2552 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2554 ** provided a readably-printable representation for RANDOM-STATE
2556 ** ensured that pathnames, where they have a namestring, always
2557 print using #P"..." syntax.
2559 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2560 * Support for the forthcoming 2.0 version of the NetBSD kernel
2561 running on x86 hardware has been added. (thanks to Perry
2562 E. Metzger most immediately, and others for their past work)
2563 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2564 current release version; SBCL's OpenBSD support had been broken
2565 since about the time of OpenBSD's switch to ELF binary format.)
2566 * [placeholder for DX summary]
2567 ** user code with &REST lists declared dynamic-extent, under high
2568 speed or space and low safety and debug optimization policy.
2569 * The manual has been converted to Texinfo format and the debugger
2570 chapter from the cmucl manual has been added.
2571 * A facility has been added to extract documentation strings from
2572 sbcl and store them as Texinfo-formatted snippets for inclusion in
2573 the manual (via Texinfo's @include directive)
2574 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2575 the test case to Dave Roberts)
2576 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2577 pointers. (reported by Sean Ross)
2578 * bug fix: PROFILE output is printed nicely even for large numerical
2579 values. (thanks to Zach Beane)
2580 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2581 greater than 32 handle EOF correctly.
2582 * bug fix: on X86 an immediate argument of the IMUL instruction is
2583 correctly printed in disassembly. (thanks to Lutz Euler)
2584 * bug fix: class slots in redefined classes preserve their old
2585 values. (thanks to Bruno Haible and Nikodemus Siivola)
2586 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2587 succeeds. (reported by Marco Baringer)
2588 * fixed some bugs revealed by Paul Dietz' test suite:
2589 ** READ-SEQUENCE now works on ECHO-STREAMs.
2590 ** RATIONALIZE works more according to its specification. (thanks
2593 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2594 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2595 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2596 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2597 should matter to you only if you rebind the printer control
2598 variables and then find you want different bindings in the
2599 debugger than in the ordinary execution of your program.)
2600 * The runtime build system has been tweaked to support building
2601 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2602 assembler and linker. (thanks to Nikodemus Siivola)
2603 * Unbound, undefined, undeclared variables now trigger full
2604 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2605 more often programmer error than deliberate exploitation of undefined
2607 * optimization: the hash algorithm for strings has changed to one
2608 that is less vulnerable to spurious collisions. (thanks to Juho
2610 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2611 needless bounds checking. (thanks to Juho Snellman)
2612 * optimization: implemented multiplication as a modular
2613 (UNSIGNED-BYTE 32) operation on the PPC backend.
2614 * fixed some bugs revealed by Paul Dietz' test suite:
2615 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2617 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2618 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2619 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2621 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2623 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2625 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2626 their output stream on EOF from read.
2627 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2628 have been read to end-of-file.
2629 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2631 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2632 description of determination of which consecutive characters
2634 ** Printing the "Space" character with escaping on now yields "#\\ ",
2635 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2636 ** Reading floating-point numbers with *READ-BASE* set to a number
2637 less than 10 works correctly.
2638 ** Reading floating-point numbers with *READ-BASE* set to a number
2639 more than 10 works correctly.
2640 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2641 the readtable currently in effect.
2643 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2644 * minor incompatible change: parsing of namestrings on a physical
2645 (Unix) host has changed; numbers after the final #\. in a
2646 namestring are no longer interpreted as a version field. This is
2647 intented to be largely invisible to the user, except that the
2648 meaning of the namestring "*.*.*" has changed: it now refers to a
2649 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2650 should usually be replaced by
2651 (make-pathname :name :wild :type :wild :version :wild)
2652 with the added benefit that this is more likely to be portable.
2653 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2654 option to OPEN now signals an error if the file being opened
2655 exists; this may have an impact on existing code.
2656 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2657 signals received, on the PowerPC platforms (both Linux and
2658 Darwin). (thanks to Pierre Mai for pointing out the location of
2660 * several fixes on OS X: The system now builds and runs cleanly on
2661 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2662 (thanks to Brian Mastenbrook)
2663 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2664 second-resolution: integer multiples of 1/3600 between -24 and 24.
2665 (thanks to Vincent Arkesteijn)
2666 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2667 type when called with 1 argument; PEEK-CHAR checked type of
2668 PEEK-TYPE only after having read first character from a
2669 stream. (reported by Peter Graves)
2670 * bug fix: the garbage collector now has much better locality
2671 behaviour, and in particular no longer treats all memory as being
2672 exhausted when many small objects point to each other in a deeply
2674 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2675 recognized as being TYPEP their class.
2676 * bug fix: the PUSHNEW documentation string has been corrected.
2677 (thanks to Vincent Arkesteijn)
2678 * bug fix: defaulting of the value for the last of an atypically
2679 large number of multiple values being bound was not being
2680 performed correctly on the Alpha or PPC platforms
2681 * optimization: implemented multiplication as a modular
2682 (UNSIGNED-BYTE 32) operation on the x86 backend.
2683 * optimization: SEARCH on simple-base-strings can now be open-coded.
2684 (see also contrib/compiler-extras.lisp for inspiration for
2685 teaching the compiler about the Boyer-Moore algorithm).
2686 * value, returned by MAX (and MIN) called with several EQUALP, but
2687 not EQL, arguments now does not depend on compiler settings.
2688 * fixed some bugs revealed by Paul Dietz' test suite:
2689 ** in stack analysis liveness information is propagated from
2690 non-local entry points.
2691 ** pathwise CAST removing failed when the CAST node did not start
2693 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2694 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2696 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2697 host is already defined.
2698 ** RENAME-FILE works on streams instead of signalling an internal
2700 ** PEEK-CHAR uses the current readtable when determining whether
2701 or not a character is whitespace.
2702 ** MERGE-PATHNAMES handles the case when the pathname does not
2703 specify a name while the default-pathname specifies a version.
2704 ** Pathnames now stand a better chance of respecting print/read
2706 ** Attempting to use standardized file system operators with a
2707 pathname with invalid :DIRECTORY components signals a
2709 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2711 ** DIRECTORY on logical pathnames is more correct.
2712 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2713 signal a TYPE-ERROR if their argument is not a stream.
2714 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2715 designator argument does not designate a stream.
2716 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2717 examining the synonym.
2718 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2720 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2721 element-type larger than ([UN]SIGNED-BYTE 32).
2723 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2724 * When built with the :SB-FUTEX feature, threaded builds now take
2725 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2726 for faster/more reliable mutex and condition variable support.
2727 * Incompatible change (but one you probably shouldn't have been using
2728 anyway): the interface and code for arbitrating between multiple
2729 threads in the same user session has been redesigned.
2730 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2731 error when called without an explicit environment argument.
2732 (thanks to Nikodemus Siivola)
2733 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2734 confused about their position. (thanks to Adam Warner and Gerd
2736 * bug fix: Pretty printing backquoted forms with unquotations in the
2737 argument list position of various code constructs such as LAMBDA
2738 now works correctly. (reported by Paul Dietz)
2739 * bug fix: Pretty printing unquotations no longer loses all
2740 stream position information.
2741 * optimization: performance of string output streams is now less
2742 poor for multiple small sequence writes.
2743 * optimization: performance of CSUBTYPEP in the presence of complex
2744 expressions involving CONS and NOT many times has been improved.
2745 (reported by Paul Dietz)
2746 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2748 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2749 streams for the REPL, for the debugger, and so on. (thanks to
2751 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2752 * fixed some bugs revealed by Paul Dietz' test suite:
2753 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2754 is ignored if it is too small, rather than propagating through
2755 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2756 ** extremely complex negations of CONS types were not being
2757 sufficiently canonicalized, leading to inconsistencies in
2759 ** VALUES tranformer lost derived type.
2761 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2762 * fixed a bootstrapping bug: the build process no longer assumes
2763 that the various BOOLE-related constants have the same value in
2764 host and target lisps. (noted by Paul Dietz' test suite on an
2765 SBCL binary built from CLISP)
2766 * The system can now be dynamically linked on the MIPS platform,
2767 which enables dynamic loading of foreign code from Lisp. (thanks
2768 to Ralf Baechle for discussions on the MIPS ABI)
2769 * The system now records debugging information for its own source
2770 files in a filesystem-position-independent manner, relative to
2771 the "SYS" logical host.
2772 * fixed a compiler bug: MV-LET convertion did not check references
2773 to the "max args" entry point. (reported by Brian Downing)
2774 * tweaked disassembly notes to be less confident about proclaiming
2775 some instruction as an LRA. (thanks to Brian Downing)
2776 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2777 now each have their own history, command character, and other
2778 characteristics. (thanks to David Lichteblau)
2779 * fixed some bugs revealed by Paul Dietz' test suite:
2780 ** compiler failure in compiling LOGAND expressions including a
2782 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2783 shift greater than 32.
2784 ** FLUSH-DEST did not mark blocks for type check regeneration.
2785 ** HANDLER-CASE failed to accept declarations in handler clauses
2786 in some circumstances.
2788 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2789 * New code in contrib/sb-introspect (still probably not entirely
2790 stable yet) provides some support for smart Lisp development
2791 environments like SLIME.
2792 * The conditions signalled for errors occurring when loading .fasl
2793 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2794 in a way which should help ASDF recover gracefully.
2795 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2796 stuff has been cleaned up. If you code contrib/ stuff, this might
2797 affect you, and you can look at contrib/README, contrib/STANDARDS,
2798 and/or the 0.8.4.27 diff to check.
2799 * In full calls the compiler now does not generate checks for declared
2800 argument types for all arguments.
2801 * various threading fixes
2802 ** and some experimental patches which didn't make it into
2803 the main tree for this release, but which are shipped in
2804 contrib/experimental-thread.patch as a possible fix for some
2805 failures (deadlock, spinning...) in GC-intensive multithreaded
2807 * fixed PPC build problem (source code incompatibility of different
2808 library versions): added offsetof() hackery which attempts to divine
2809 where glibc maintainers put uc_mcontext today
2810 * fixed bug 282: compiler does not trust type assertions while passing
2811 arguments to a full call.
2812 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2813 &OPTIONAL VALUES type parameter.
2814 * fix bug 214: algorithm for noting rejected templates is now more
2815 similar to that of template seletion. (also reported by rydis on
2817 * fixed bug 141b: printing backquoted information readably and prettily
2818 inserts a space where necessary.
2819 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2820 (CHARACTER 10) are now reported as errors, rather than propagated
2821 as unknown types. (reported by piso on #lisp)
2822 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2823 with values NIL and :ERROR. (thanks to Milan Zamazal)
2824 * fixed bug 191c: CLOS now does proper keyword argument checking as
2825 described in CLHS 7.6.5 and 7.6.5.1.
2826 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2827 longer raise an error; further, using a list as a for-as-arithmetic
2828 counter now raises a meaningful error.
2829 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2830 now understood by sequence creation functions such as MAKE-SEQUENCE
2832 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2833 a STRING-INPUT-STREAM.
2834 * compiler enhancement: SIGNUM is now better able to derive the type
2836 * type declarations inside WITH-SLOTS are checked. (reported by
2838 * fixed some bugs revealed by Paul Dietz' test suite:
2839 ** incorrect optimization of TRUNCATE for a positive first
2840 argument and negative second.
2841 ** compiler failure in let-convertion during flushing dead code.
2842 ** compiler failure while deriving type of TRUNCATE on an
2843 interval, containing 0.
2844 ** ASH of a negative bignum by a negative bignum count now returns
2846 ** intersection of CONS types now canonicalizes properly, fixing
2847 inconsistencies in SUBTYPEP.
2849 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2850 * incompatible change: The --disable-debugger command line
2851 option now clobbers the debugger at a more fundamental
2852 level, by redefining #'INVOKE-DEBUGGER instead of by
2853 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2854 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2855 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2856 enter the debugger REPL and then suffer recursive errors
2857 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2858 while under the new system, BREAK in --disable-debugger mode
2859 terminates the system just as an unhandled error would.
2860 * fixed compiler performance when processing loops with a step >1;
2861 * bug fix: DOCUMENTATION now retrieves generic function
2862 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2863 support has been systematized, and now supports the methods
2864 specified by ANSI, along with a default method and a method for
2865 slot documentation. (reported by Nathan Froyd)
2866 * bug fix: effective methods associated with a generic function are
2867 no longer cached over a change of that generic function's method
2868 combination. (reported by Andreas Fuchs)
2869 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2870 names a non-existent directory. (thanks to Andreas Fuchs)
2871 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2872 the PPC platform, lead to stack corruption; this has been fixed.
2873 (reported by Rainer Joswig)
2874 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2875 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2876 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2877 arithmetic in general, is now much more reliable on the PPC
2879 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2880 platform now returns the right answer.
2881 * optimization: restored some effective method precomputation in
2882 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2883 precomputation is now tunable.
2884 * optimization: compiler-internal data structure use has been
2885 reviewed, and changes have been made that should improve the
2886 performance of the compiler by about 20%.
2887 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2888 simple-base-strings and simple-bit-vectors is improved.
2889 * optimization: the optimization of 32-bit logical and arithmetic
2890 functions introduced in version 0.8.3 on the x86 has been
2891 implemented on the mips, ppc and sparc platforms; an
2892 implementation of the same facility, but for 64-bit arithmetic,
2893 has been added for the alpha.
2894 * microoptimization: the compiler is better able to make use of the
2895 x86 LEA instruction for multiplication by constants.
2896 * bug fix: in some situations compiler did not report usage of
2897 generic arithmetic in (SPEED 3) policy.
2898 * bug 145b fix: compiler used wrong type specifier while converting
2899 MEMBER-types to numeric.
2900 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2902 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2903 index argument now works properly on the Alpha platform.
2904 * bug fix: floating point exception treatment on the Alpha platform
2906 * bug fix: FILE-POSITION works much better on string input and
2907 output streams. (thanks to Nikodemus Siivola)
2908 * bug fix: many threading/garbage collection symptoms sorted.
2909 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2910 might be pseudo-atomic.
2911 * internal change: Stopping for GC is now done with signals not
2912 ptrace. GC is now done in whichever thread wanted it, instead of
2914 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2916 * bug fix: result form in DO is not contained in the implicit
2918 * incompatible change: ICR structure is changed; the value part of
2919 CONTINUATION is now called LVAR; corresponding functions are
2920 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2921 * added type deriver for ISQRT (thanks to Robert E. Brown).
2922 * bug fix: better support for loading from the command line when an
2923 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2925 * fixed some bugs revealed by Paul Dietz' test suite:
2926 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2927 ** ROUND and FROUND now give the right answer when given very
2928 small float arguments.
2929 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2931 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2932 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2933 ** LCM should return a non-negative integer.
2934 ** PARSE-INTEGER returned the index of a terminator instead of the
2935 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2936 ** PARSE-INTEGER returned an incorrect index being applied to a
2938 ** LCM with two arguments of 0 returns 0 rather than signalling
2940 ** unsigned addition of a 32-bit constant with the high bit set no
2941 longer causes an internal compiler error on the x86.
2942 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2943 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2944 with negative last argument.
2945 ** byte specifiers with zero size and position no longer cause
2946 an error during type derivation.
2947 ** bignum multiplication on the Alpha platform now returns the
2949 * porting: The system now builds on SuSE AMD64, although it still
2950 generates a 32-bit binary.
2951 * .fasl file incompatibility: The fasl file version number has
2952 been incremented (because of the changes to internal compiler
2953 data structures referred to above).
2955 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2956 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2957 more accurately, on the Darwin kernel running on PowerPC hardware.
2958 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2959 * Compiler code deletion notes now signal a condition of type
2960 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2961 an associated MUFFLE-WARNING restart.
2962 * The compiler now performs limited argument count validation of
2963 constant format strings in FORMAT, and where appropriate in ERROR,
2964 CERROR and WARN. (thanks to Gerd Moellmann)
2965 * New ASDF-INSTALL contrib can be used for automatic download and
2966 installation of third-party Lisp code from CCLAN or other sites
2968 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2969 which forces another thread to execute a function supplied by the
2971 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2972 now accept and act upon their :ELEMENT-TYPE keyword argument.
2973 (reported by Martin Atzmueller, Edi Weitz)
2974 * bug fix: FILE-POSITION now accepts position designators up to
2975 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2976 is the greater. (thanks to Patrik Nordebo)
2977 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2978 Kalle Olavi Niemitalo)
2979 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2980 printable. (reported by Eric Marsden)
2981 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2982 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2983 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2984 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2985 (thanks to Stig Sandoe)
2986 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2987 UNREAD-CHAR now correctly includes the unread character in the
2988 target sequence. (thanks to Gerd Moellmann)
2989 * bug fix in threaded builds: the system can now be suspended and
2990 resumed by shell job control with minimal disruption.
2991 * bug fixes in times and timezones >2038AD
2992 * better handling of "where is GNU make?" problem in build scripts
2993 (thanks to Nikodemus Siivola)
2994 * new optimization: inside a named function any reference to a
2995 function with the same name is considered to be a self-reference;
2996 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2997 optimization quality.
2998 * new optimization on x86: logical functions and + now have
2999 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3000 used when the result is truncated to 32 bits.
3001 * VALUES declaration is partially enabled.
3002 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3003 * fixed some bugs revealed by Paul Dietz' test suite:
3004 ** The system now obeys the constraint imposed by
3005 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3006 types form a lattice under type intersection.
3007 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3008 ** ASSOC now ignores NIL elements in an alist.
3009 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3010 and (1+ MOST-POSITIVE-FIXNUM) answers.
3011 ** The addition of a method with invalid qualifiers to a generic
3012 function does not cause an error to be signalled immediately;
3013 a warning is signalled, and the error is generated only on
3014 calling the generic function.
3015 * changed .fasl file version number, in part to add type codes for
3016 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3017 obscure ANSI requirements
3019 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3020 * fixed bug 148: failure to inline-expand a local function left
3021 garbage, confusing the compiler.
3022 * fixed bugs 3cd: structure slot readers perform type check if the
3023 slot can have an invalid value (i.e. it is either not initialized
3024 or can be written with a less specific slot writer).
3025 * bug fix: the compiler now traps array references to elements off
3026 the end of an array; previously, the bounds checking in some
3027 circumstances could go off-by-one.
3028 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3030 * type declarations for array element types now obey the description
3031 on the CLHS page "Declaration TYPE", as per discussions on
3032 sbcl-help around 2003-05-08. This means that a declaration
3033 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3034 declaration, all references to BAR will be asserted or assumed
3035 (with THE, so dependent on compiler policy) to involve objects of
3036 type FOO. Note that no such declaration is implied in
3037 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3038 * declared types of functions from the "Conditions"
3039 chapter. (reported by Paul Dietz)
3040 * bug fix: CERROR accepts a function as its first argument.
3041 * bug fix: NTH an NTHCDR accept a bignum as index
3042 arguments. (reported by Adam Warner)
3043 * optimization: character compare routines now optimize comparing
3044 against a constant character. (reported by Gilbert Baumann)
3045 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3046 argument now works properly on the MIPS platform.
3047 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3048 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3049 declared to have a functional type, does not cause an error
3051 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3052 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3053 * fixed bug: if last continuation of a deleted block has a
3054 destination, this destination should be deleted too. (reported by
3056 * fixed a bug in the bootstrap process: the host compiler's values
3057 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3058 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3059 test case from Patrik Nordebo)
3060 * improved the ability of the disassembler on the PPC platform to
3061 provide helpful disassembly notes.
3062 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3063 the class in more cases than previously.
3064 * bug fix: FILE-POSITION now understands :START and :END for
3065 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3066 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3067 8) data. (thanks to David Lichteblau)
3068 * bug fix: it is possible to add a method to a generic function
3069 without lambda list.
3070 * bug fix: reader failed to signal END-OF-FILE inside an
3071 object representation. (reported by Nikodemus Siivola)
3072 * fixed some bugs revealed by Paul Dietz' test suite:
3073 ** LAST and [N]BUTLAST should accept a bignum.
3074 ** condition slot accessors are methods.
3075 ** (VECTOR NIL) is a subtype of STRING.
3077 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3078 * minor incompatible change: some nonsensical specialized lambda
3079 lists (used in DEFMETHOD) which were previously ignored now signal
3081 * minor incompatible change: the system is now aware of the types of
3082 variables in the COMMON-LISP package, and will signal errors for
3083 most violations of these type constraints (where previously they
3084 were silently accepted).
3085 * minor incompatible change: COMPILE-FILE now uses the freedom
3086 afforded (ANSI 3.2.2.3) to use derived function types for
3087 functions defined in the same file. This also permits the system
3088 to warn on static type mismatches and function
3089 redefinition. (Currently it does not work with high DEBUG level.)
3090 * minor incompatible change: VALUES declaration is disabled.
3091 * When issuing notes, the compiler now signals a condition of type
3092 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3093 restart for use in user handlers. It is expected that the
3094 COMPILER-NOTE condition will eventually become a condition
3095 supertype to a hierarchy of note types, which will then be
3096 handleable in a similar fashion. However, at the moment, no such
3097 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3098 but it's an implementation detail, not a classification for the
3100 * Changes in type checking closed the following bugs:
3101 ** type checking of unused values (192b, 194d, 203);
3102 ** template selection based on unsafe type assertions (192c, 236);
3103 ** type checking in branches (194bc).
3104 * A short form of VALUES type specifier has ANSI meaning (it has
3105 increased the number of situations when SBCL cannot perform type
3107 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3108 keywords or constants is permissible.
3109 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3110 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3111 classes. (thanks to Antonio Martinez)
3112 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3113 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3114 argument to a pretty-print stream. Instead, it leaves any such
3115 operations to DESCRIBE-OBJECT methods.
3116 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3118 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3119 lambda lists. (thanks to David Lichteblau)
3120 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3121 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3122 (thanks to Gerd Moellmann)
3123 * fixed bug 246: increased compilation speed of long
3124 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3126 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3128 * DEFCONSTANT now throws a condition of type
3129 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3130 constant to a non-EQL value; CONTINUE and ABORT restarts
3131 respectively change and preserve the value.
3132 * fixed bug 63: The code walker, part of the implementation of CLOS,
3133 is now better at handling symbol macros.
3134 * bug fix: There is no longer an internal implementation type named
3135 CL:LENGTH. (reported by Raymond Toy)
3136 * bug fix: In macro-like defining macros/special operators the
3137 implicit block does not enclose the lambda list.
3138 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3139 enclosed in parentheses) are not suitable as type specifiers, and
3140 their use properly signals an error now.
3141 * bug fix: An argument count mismatch for a type specifier in code
3142 being compiled no longer causes an unhandled error at compile
3143 time, but signals a compile-time warning.
3144 * fixed simple vector readable printing
3145 * bug fix: DESCRIBE takes more care over whether the class
3146 precedence list slot of a class is bound before accessing it.
3147 (reported by Markus Krummenacker)
3148 * bug fix: FORMATTER can successfully compile pretty-printer format
3149 strings which use variants of the ~* directive inside.
3150 * bug fix: SEARCH now applies its TEST predicate to the elements of
3151 the arguments in the correct order. (thanks to Wolfhard Buss)
3152 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3153 in type inference. (thanks to Robert E. Brown)
3154 * bug fix: Reading in symbols with an explicit package name of ""
3155 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3156 * fixed some bugs revealed by Paul Dietz' test suite:
3157 ** NIL is now allowed as a structure slot name.
3158 ** Arbitrary numbers, not just REALs, are allowed in certain
3159 circumstances in LOOP for-as-arithmetic clauses.
3160 ** Multiple class redefinitions before slot access no longer
3161 causes a type error.
3162 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3163 association between the name and a class.
3164 ** Generic functions with non-standard method-combination and over
3165 five methods all of which return constants no longer return NIL
3166 after the first few invocations. (thanks to Gerd Moellmann)
3167 ** CALL-NEXT-METHOD with no arguments now passes the original
3168 values of the arguments, even in the presence of assignment.
3169 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3171 ** DISASSEMBLE works with closures and funcallable instances.
3172 ** ADD-METHOD now returns the generic function, not the new method.
3173 ** FIND-METHOD signals an error if the lengths of the specializers
3174 is incompatible with the generic function, even if the ERRORP
3176 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3177 which its argument is a member.
3178 ** DEFCLASS only redefines the class named by its class-name
3179 argument if that name is the proper name of the class;
3180 otherwise, it creates a new class.
3181 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3182 of the UNBOUND-SLOT condition to the name of the slot.
3183 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3184 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3185 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3186 SLOT-MAKUNBOUND in the specified fashion.
3188 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3189 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3190 cross-compilation host. As a consequence, we can now bootstrap our
3191 way up to SBCL starting with a bare gcc toolchain and human-readable
3192 source code (first the source to CLISP, then the source to SBCL).
3193 * A contributed module containing a partial implementation of the
3194 simple-streams interface has been included. (thanks to Rudi
3196 * A contributed module implementing the RFC1321 Message Digest
3197 Algorithm, known as MD5, has been included.
3198 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3199 no longer has any effect, as the code controlled by this feature
3200 has been deleted. (As far as we know, no-one has ever built using
3201 this feature, and its semantics were confused in any case).
3202 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3203 work on conditions (as required by the ANSI specification),
3204 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3205 expected behaviour on conditions. Users should note, however,
3206 that such behaviour is not required by the ANSI specification,
3207 and so use of this behaviour may render their code unportable.
3208 * fixed some bugs revealed by Paul Dietz' test suite:
3209 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3211 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3212 ** SXHASH on condition objects no longer returns NIL.
3213 ** :ALLOCATION :CLASS slots are better treated; their values are
3214 updated on class redefinition, and initforms inherited from
3215 superclasses are applied.
3216 ** REMOVE-METHOD returns its generic function argument even when
3217 no method was removed.
3218 ** SHARED-INITIALIZE now initializes the values of the requested
3219 slots, including those with :ALLOCATION :CLASS.
3220 ** ALLOCATE-INSTANCE now works on structure classes defined via
3221 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3223 ** SLOT-EXISTS-P now works on conditions, as well as structures
3225 ** MAKE-LOAD-FORM now has the required methods on
3226 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3227 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3228 keyword, and now implements the SLOT-NAMES argument.
3229 ** methods with &OPTIONAL arguments no longer allow too many
3230 arguments to be passed in the call without error.
3231 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3232 option is consistent with the required arguments of the generic
3233 function lambda list.
3234 * bug fix: REQUIRE accepts a string designator. (Thanks to
3236 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3237 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3238 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3239 * bug fix: The compiler now checks for duplicated variables in macro
3241 * bug fix: SETQ on globals returns the correct value.
3242 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3243 not a COMPILER-ERROR (followed by some other strange error on
3244 choosing the CONTINUE restart).
3245 * bug fix: make.sh and friends are now more consistent in the way that
3246 they look for GNU "make".
3248 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3249 * experimental native threads support (on x86 Linux >=2.4 only).
3250 This is not compiled in by default: you need to add :SB-THREAD to
3251 the target features. See the "Beyond ANSI" chapter of the manual
3253 * fix for longstanding nonANSIism: The old distinction between
3254 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3255 The return value from CL:FIND-CLASS is now a CLOS class, and
3256 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3257 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3258 * An interface to the MetaObject Protocol, as described in Kiczales,
3259 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3260 MIT Press, 1991, is available from the SB-MOP package.
3261 * incompatible change: the SB-PCL package should now be considered
3262 a private implementation detail, and no longer a semi-private MOP
3264 * minor incompatible change: due to rearrangement for threads, the
3265 control stack and binding stack are now allocated at arbitrary
3266 addresses instead of being hardcoded per-port. Users affected by
3267 this probably have to be doing advanced things with shared
3268 libraries, and will know who they are.
3269 * minor incompatible change: Previously, all --eval forms used were
3270 processed with READ before any of them were processed with EVAL.
3271 Now each --eval form is processed with both READ and EVAL before
3272 the next --eval form is processed. (Thus package operations like
3273 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3274 work as the user might reasonably expect.)
3275 * minor incompatible change: *STANDARD-INPUT* is now only an
3276 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3278 * minor incompatible change: Y-OR-N-P is now character-oriented,
3279 not line oriented. Also, YES-OR-NO-P now works without errors.
3280 (thanks to Antonio Martinez)
3281 * sb-aclrepl module improvements: an integrated inspector, added
3282 repl features, and a bug fix to :trace command.
3283 * Known functions, which cannot be open coded by the backend, are
3284 considered to be able to check types of their arguments. (fixing
3285 a bug report by Nathan J. Froyd)
3286 * fixed a bug in computing method discriminating functions: It is
3287 now possible to define methods specialized on classes which have
3288 forward-referenced superclasses. (thanks to Gerd Moellmann)
3289 * fixed evaluation order in optional entries (reported by Gilbert
3291 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3292 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3293 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3294 required-by-AMOP NAME argument, as well as CLASS and
3295 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3296 * fixed bug 20: DEFMETHOD can define methods using names that are
3297 not the proper names of classes to designate class specializers.
3298 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3299 Unix file descriptors, instead of blowing up. (thanks to Antonio
3301 * Garbage collection refactoring: user-visible change is that a
3302 call to the GC function during WITHOUT-GCING will not do garbage
3303 collection until the end of the WITHOUT-GCING. If you were doing
3304 this you were probably losing anyway.
3305 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3306 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3307 TYPEP the latter but not the former.
3308 * The compiler issues a full WARNING for calls to undefined functions
3309 with names from the CL package.
3310 * MAP-INTO for a vector destination is open coded. (reported by
3311 Brian Downing on c.l.l)
3312 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3313 documentation string.
3314 * fixed some bugs revealed by Paul Dietz' test suite:
3315 ** COPY-ALIST now signals an error if its argument is a dotted
3317 ** Condition slots are now accessed more correctly in the presence
3318 of multiple initargs for a given slot.
3319 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3320 exclude restarts of the same name associated with a different
3322 ** DEFCLASS of forward-referenced classes with another
3323 forward-referenced class in the superclasses list no longer
3325 ** Condition slots are now initialized once each, not multiple
3326 times. (thanks to Gerd Moellmann)
3327 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3329 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3330 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3331 arguments contain duplicated elements.
3332 ** RESTART-CASE understands local macros.
3333 ** RESTART-CASE associates exactly its own restarts with a condition.
3334 ** ENDP in safe mode checks its argument to be of type LIST.
3335 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3336 in question is unbound.
3337 ** Optimized MAKE-INSTANCE functions no longer cause internal
3338 assertion failures in the presence of duplicate initargs.
3339 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3340 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3341 propagated even in the ctor optimized implementation of
3343 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3345 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3346 * a better implementation of SXHASH on (simple) bit vectors,
3347 measured both in execution speed and in distribution of results
3348 over the positive fixnums, has been installed. Likewise, a better
3349 implementation of EQUAL for simple bit vectors is now available.
3350 * fixed CEILING optimization for a divisor of form 2^k.
3351 * fixed bug 240 (emitting extra style warnings "using the lexical
3352 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3353 by Antonio Martinez)
3354 * fixed SXHASH, giving different results for NIL depending on type
3355 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3356 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3357 variable. (found by Rolf Wester)
3358 * SBCL does not ignore type declarations for special
3359 variables. (reported by rif on c.l.l 2003-03-05)
3360 * some bug fixes in contrib/sb-aclrepl/
3361 * fixed some bugs revealed by Paul Dietz' test suite:
3362 ** a bug in the CONS type specifier, whereby the CAR and CDR
3363 types got intertwined, has been fixed;
3364 ** the type system is now able to reason about the interaction
3365 between INTEGER and RATIO types more completely;
3366 ** APPEND, [N]REVERSE and NRECONC check that those their
3367 arguments, which must be proper lists, are really so;
3368 ** An array specialized to be unable to hold elements has been
3369 implemented, as required -- yes, really -- by ANSI;
3370 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3371 on malformed property lists;
3373 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3374 * incompatible packaging change: in line with Unix convention,
3375 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3376 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3377 * REQUIRE and PROVIDE are now optionally capable of doing something
3378 useful. See the documentation string for REQUIRE.
3379 * infrastructure for a managed SBCL contrib system: contributed
3380 modules in this release include:
3381 ** the ASDF system definition facility;
3382 ** an interface to the BSD Sockets API;
3383 ** an ACL-like convenience interface to the repl;
3384 (thanks to Kevin Rosenberg)
3385 ** an implementation of ROTATE-BYTE, with efficient implementation
3387 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3388 gives a closer approximation to the right answer than previously.
3389 (thanks to Raymond Toy)
3390 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3391 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3392 optional environment arguments, as required by ANSI.
3393 * fixed bugs in other functions taking environment objects, allowing
3394 calls with an explicit NIL environment argument to be compiled
3396 * fixed bug 228: primary return values from
3397 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3398 COMPILE or FUNCTION.
3399 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3400 :TYPE will no longer signal errors on innocuous objects.
3401 * fixed bug 231b: SETQ is better at respecting type declarations in
3402 the lexical environment.
3403 * fixed a bug in DEFCLASS: classes named by symbols with no or
3404 unprintable packages can now be defined.
3405 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3406 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3407 * fixed compiler failure related to checking types of functions.
3408 (reported by Robert E. Brown)
3409 * the compiler is now much more consistent in its error-checking
3410 treatment of bounding index arguments to sequence functions: in
3411 (SAFETY 3) code, errors will be signalled in almost all cases if
3412 invalid sequence bounding indices are passed to functions defined
3413 by ANSI to operate on sequences.
3414 * fixed a bug in the build procedure: documentation of SBCL-specific
3415 packages is now preserved and available in the final Lisp image.
3416 * lifted FDEFINITION lookup out of loops in the implementation of
3417 many list operations. (thanks to Robert E. Brown)
3418 * fixed a bug in the reader: the #n# reader macro now works for
3419 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3420 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3421 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3422 E. Brown and Tony Martinez respectively)
3423 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3424 SLOT-BOUNDP: in particular, it is now able to optimize them much
3425 better, and is now not vulnerable to having packages renamed.
3426 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3427 always called when a slot is not present in an instance. (thanks
3429 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3430 longer signal an error on unreading a character following EOF on
3431 the previous constituent stream. (thanks to Tony Martinez)
3432 * fixed some bugs revealed by Paul Dietz' test suite:
3433 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3434 not just nonnegative fixnums;
3435 ** the logical bit-array operators such as BIT-AND now accept an
3436 explicit NIL for their "opt-arg" argument (to indicate a
3437 freshly-consed result bit-array);
3438 ** ELT now signals an error on an invalid sequence index in safe
3440 ** the type system is now cleverer about negations of numeric
3441 types, and consequently understands the BIGNUM and RATIO types
3443 ** the type system is now cleverer about the interaction between
3444 INTEGER and RATIO types: while bugs still remain, many more
3445 cases are accurately computed;
3446 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3447 if it is in the last clause;
3448 ** CONSTANTLY now correctly returns a side-effect-free function in
3450 ** DECLARE is no longer treated as a special-operator; in
3451 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3452 * incremented fasl file version number due to the change in the
3453 DEFSTRUCT-SLOT-DESCRIPTION structure.
3455 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3456 * minor incompatible change: code processed by the "interpreter" or
3457 EVAL now has a compilation optimization policy of (DEBUG 2)
3458 (changed from (DEBUG 1)) to improve debuggability of interactive
3459 development, and to allow the use of the debug RETURN command in
3461 * an experimental implementation of the RETURN command for the
3462 debugger has been included. (thanks to Frederik Kuivinen)
3463 * fixed bug 62: constraints were not propagated into a loop.
3464 * fixed bug in embedded calls of SORT (reported and investigated by
3466 * fixed some bugs revealed by Paul Dietz' test suite:
3467 ** printing and reading of arrays with some dimensions having
3468 length 0 (thanks to Gerd Moellmann);
3469 ** BOA constructor with &AUX argument without a default value does
3470 not cause a type error;
3471 ** CONSTANTP now returns true for all self-evaluating objects.
3473 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3474 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3475 accessors that are related by inheritance, as specified in the
3476 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3477 Valtteri Vuorikoski)
3478 * The compiler is now able to inline functions that were defined in
3479 a complex lexical environment (e.g. inside a MACROLET).
3480 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3482 * Support for the upcoming FreeBSD-5.0 release has been included.
3483 (thanks to Dag-Erling Smorgrav)
3484 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3485 effect when it is not in a toplevel context.
3486 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3487 stand a better chance of being correct. (thanks to Gerd
3489 * fixed bug in COERCE, which now signals an error on coercing a
3490 rational to a bounded real type which excludes the expected
3492 * The compiler is now able to derive types more accurately from the
3493 COERCE and COMPILE functions.
3494 * fixed bug 223: functional binding is considered to be constant
3495 only for symbols in the CL package.
3496 * fixed bug 231: SETQ did not check the type of a variable being set
3497 (reported by Robert E. Brown)
3498 * A new optimization for MAKE-INSTANCE has been included, fixing
3499 various bugs (including relating to :ALLOCATION :CLASS slots and
3500 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3502 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3503 ** As required by ANSI, LOOP now disallows anonymous collection
3504 clauses such as COLLECT I in conjunction with aggregate boolean
3505 clauses such as THEREIS (= I 1);
3506 ** LOOP now signals an error when any variable is reused in the
3507 same loop (including the potentially useful construct analogous
3508 to WITH A = 1 WITH A = (1+ A);
3509 ** IT is only a special loop symbol within the first clause of a
3510 conditional loop clause;
3511 ** LOOP with a typed iteration variable over a hashtable now
3512 signals a type error iff it should.
3513 * fixed some other bugs revealed by Paul Dietz' test suite:
3514 ** FILE-STREAM now names the class previously known as FD-STREAM;
3515 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3516 argument) no longer signals an error;
3517 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3518 of the slot symbol, rather than using the current package
3519 ((:CONC-NAME "") continues to intern the slot's name in the
3521 * incremented fasl file version number, because of the incompatible
3522 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3523 of the new implementation of DEFINE-COMPILER-MACRO.
3525 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3526 * Support for building SBCL for MIPS platforms running in
3527 little-endian mode has now been checked in, and basic
3528 functionality on said platforms verified.
3529 * minor incompatible change: PCL now records the pathname of a file
3530 in which methods and the like are defined, rather than its
3532 * minor incompatible change: TRUENAME now considers the truename of
3533 a file naming a directory to be the pathname with :DIRECTORY
3534 component indicating that directory.
3535 * minor incompatible change: a NAMED clause in the extended form of
3536 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3537 reason for the previous behaviour is unclear.
3538 * more systematization and improvement of CLOS and MOP conformance
3539 in PCL (thanks to Gerd Moellman and Pierre Mai):
3540 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3542 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3543 primary methods with no specializers;
3544 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3546 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3547 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3548 FORWARD-REFERENCED-CLASSes; error reporting on
3549 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3551 ** SXHASH on CLOS instances now uses a slot internal to the
3552 instance to return different numbers on distinct instances,
3553 while preserving the same return value through invocations of
3555 ** DEFMETHOD signals errors when methods with longer incongruent
3556 lambda lists are added to generic functions;
3557 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3558 CLASS, as specified in AMOP;
3559 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3560 on the order returned by the primary method for classes of
3561 class STANDARD-CLASS;
3562 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3563 * fixed some bugs shown by Paul Dietz' test suite:
3564 ** DOLIST puts its body in TAGBODY;
3565 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3567 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3568 value producing form;
3569 ** if more variables are given to PROGV than values, extra
3570 variables are bound and made to have no value;
3571 ** NSUBSTITUTE on list arguments gets the right answer with
3573 ** ELT signals an error of type TYPE-ERROR when the index argument
3574 is not a valid sequence index;
3575 ** LOOP signals (at macroexpansion time) an error of type
3576 PROGRAM-ERROR when duplicate variable names are found;
3577 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3578 ** FUNCALL of special-operators now cause an error of type
3580 ** PSETQ now works as required in the presence of side-effecting
3581 symbol-macro places;
3582 ** NCONC accepts any object as its last argument;
3583 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3585 ** loop-for-as-package does not require a package to be explicitely
3587 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3589 * fixed bug 166: compiler preserves "there is a way to go"
3590 invariant when deleting code.
3591 * fixed bug 172: macro lambda lists with required arguments after
3592 &REST arguments now cause an error to be signalled. (thanks to
3594 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3595 bug. (thanks to Matthew Danish)
3596 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3598 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3599 arguments are lexically rebound. (thanks to Gerd Moellmann and
3601 * fixed bug 194: error messages are now more informative when there
3602 is no primary method applicable in a call to a generic
3603 function. (thanks to Gerd Moellmann)
3604 * fixed bug in command line argument checking (thanks to Julian
3606 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3607 (thanks to Matthew Danish)
3608 * incremented fasl file version number, because of the
3609 SXHASH-related changes in the layout of CLOS data structures
3611 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3612 * minor incompatible change: The runtime (the Unix executable named
3613 "sbcl") is now much pickier about the .core files it will load.
3614 Essentially it now requires .core files to descend from the same
3615 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3616 as the runtime does. (The intent is to prevent the crashes which
3617 can occur, and which can even be reported as mysterious failures,
3618 when people patch the sources or change the build parameters
3619 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3620 sbcl and .core files.)
3621 * fixed bug: VALUES-LIST is no longer optimized away.
3622 * fixed bug 142: The FFI conversion of C string values to Lisp
3623 string values no longer conses excessively. (thanks to Nathan
3624 Froyd porting Raymond Toy's fix to CMU CL)
3625 * began to systematize and improve MOP conformance in PCL (thanks to
3626 Nathan Froyd, Gerd Moellman and Pierre Mai):
3627 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3629 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3630 ** FINALIZE-INHERITANCE is now called on class finalization;
3631 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3632 argument precedence order.
3633 * fixed bug 202: The compiler no longer fails on functions whose
3634 derived types contradict their declared type.
3635 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3636 so it can be non-toplevel.
3637 * The fasl file version number has changed (because of the new
3638 implementation of DEFMACRO).
3639 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3640 safe code, that any length requirement by their type-specifier
3641 argument is valid. The exceptions to this are described in bug
3643 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3644 functions now check the types of their inputs as required by ANSI.
3645 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3646 introduced symbol is DECLAREd to be SPECIAL.
3647 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3648 * fixed bug: :COUNT argument to sequence functions may be negative
3649 * fixed bug: body of DO-SYMBOLS may contain declarations
3650 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3651 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3652 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3653 symbol macro only once
3654 * fixed printing of call frame when argument list is unavailable
3655 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3656 * compiler no longer signals WARNING on unknown keyword
3659 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3660 * A beta-quality port to the mips architecture running Linux,
3661 based on the old CMUCL backend, has been made. It has been tested
3662 on a big-endian kernel, and works sufficiently well to be able to
3663 rebuild itself; it has not been tested in little-endian mode.
3664 * fixed an inconsistency between gencgc.c and purify.c which made
3665 dumping/loading .core files unreliable
3666 * fixed bug 120a: The compiler now deals correctly with IFs where
3667 the consequent is the same as the alternative, instead of
3668 misderiving the return type. (thanks to Alexey Dejneka)
3669 * fixed bug 113: Logical pathnames are now dumpable (the logical
3670 host is resolved at load-time, throwing an error if it is not
3672 * fixed bug 174: FORMAT's error message is slightly clearer when a
3673 non-printing character is used in a format directive.
3674 * fixed several bugs in compiler checking of type declarations, i.e.
3675 violations of the Python "declarations are assertions" principle
3676 (thanks to Alexey Dejneka)
3677 * fixed several bugs in PCL's error checking (thanks to Gerd
3679 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3681 * fixed bug in compilation of functions as first class values
3682 (thanks to Antonio Martinez-Shotton)
3683 * The compiler's handling TYPE-ERRORs which it can prove will
3684 inevitably happen at runtime has been cleaned up and corrected
3685 in several ways. (thanks to Alexey Dejneka)
3686 * improved argument type checking for various basic arithmetic
3687 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3688 lavished on them in the past that they can be compiled in many
3689 ways in different special cases
3690 * fixed bug 181: compiler checks validity of user supplied type
3692 * cleaned up code flushing in optimization: Function calls which
3693 should signal errors for safety purposes (e.g. which ANSI says
3694 should signal errors when their arguments are of incorrect type)
3695 are no longer optimized away.
3696 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3697 * incremented fasl file version number, because changes in the
3698 implementation of sequence functions like COERCE caused
3699 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3700 in old inline expansions) to become undefined. (Actually these
3701 changes were later undone, so we might very well be binary
3702 compatible with 0.7.7 after all, but leaving the version number
3703 incremented seemed like the simplest and most conservative
3706 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3707 * An alpha-quality port to the parisc architecture running Linux,
3708 based on the old CMUCL backend, has been made. This, even more so
3709 than the other backends, should be considered still a work in
3710 progress; known problems include that the Linux kernel in 64-bit
3711 mode does not propagate the correct sigcontext structure to
3712 userspace, and consequently SBCL on a parisc64 kernel will not
3714 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3715 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3716 suppressed.) Also now that the compiler is looking at declarations
3717 in the environment, it checks optimization declarations as well,
3718 and suppresses inlining when (> DEBUG SPEED).
3719 * More fixes have been made to treatment of floating point exception
3720 treatment and other Unix signals. In particular, floating point
3721 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3722 * The detection and handling of control stack exhaustion (infinite
3723 or very deeply nested recursion) has changed. Stack exhaustion
3724 detection is now done by write-protecting pages at the OS level
3725 and applies at all optimization settings; when found, a
3726 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3727 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3728 be caught using IGNORE-ERRORS.
3729 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3730 correctly when transforming recursive LABELS functions to LETs.
3731 (thanks to Alexey Dejneka)
3732 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3733 that are names of constants or global variables.
3734 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3735 alien routines with docstrings.
3736 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3737 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3739 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3740 (thanks to Eric Marsden)
3741 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3742 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3743 * Bug fix: The SPARC backend can now compile functions involving
3744 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3745 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3746 to a functions expecting a PATHNAME-DESIGNATOR.
3747 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3748 lambda lists. (thanks to Alexey Dejneka)
3749 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3750 functions so that EXPORTing the name of the class doesn't cause
3751 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3752 to Antonio Martinez for reporting this)
3753 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3754 constant-folded without failing an assertion. (thanks to Einar
3755 Floystad Dorum for reporting this)
3756 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3757 types are now dealt with more correctly by the compiler.
3758 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3759 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3760 behaviour analogous to RENAME-FILE. This puts its behaviour more
3761 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3763 * The fasl file version number has changed again. (because of the
3764 bug fix involving the names of PCL MAKE-INSTANCE functions)
3766 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3767 * bug fix: Floating point exceptions are treated much more
3768 consistently on the x86/Linux and PPC/Linux platforms.
3769 * Array initialization with :INITIAL-ELEMENT is now much faster for
3770 cases when the compiler cannot open code the array creation, but
3771 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3772 array accesses have also seen a speed increase.
3773 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3774 specified. (This was at the root of some bad interactions between
3775 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3777 * bug fix: Internal error arguments for undefined functions are now
3778 computed correctly on the PPC/Linux platform.
3779 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3780 Raymond Toy's patch for CMU CL)
3781 * Support for the Solaris 9 operating environment has been included
3782 (thanks to Daniel Merritt)
3783 * A very ugly but hopefully complete draft of the missing FFI chapter
3784 of the manual has been created by reformatting the corresponding
3785 CMU CL manual chapter into (currently very ugly and incoherent)
3786 DocBook and bringing it up to date for SBCL behavior. Thus, the
3787 manual is now essentially complete, at least by my extreme
3788 once-and-only-once standards, whereby it's acceptable to refer to
3789 the doc strings of SB-EXT functions as the primary documentation.
3790 * The fasl file version number has changed again, due to cleanup of
3791 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3792 is no longer a static symbol.)
3794 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3795 * SBCL now builds with OpenMCL (version 0.12) as the
3796 cross-compilation host; also, more progress has been made toward
3797 bootstrapping under CLISP.
3798 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3800 * bug 158 fixed: The compiler can now deal with integer loop
3801 increments different from 1; fixing this turned out also to fix
3803 * bug 169 fixed: no more bogus warnings about using lexical bindings
3804 despite the presence of perfectly good SPECIAL declarations (thanks
3805 to David Lichteblau)
3806 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3807 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3808 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3810 * bug 180 fixed: Method combination specifications no longer ignore
3811 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3812 * bug fix: Structure type predicate functions now check their argument
3813 count as they should.
3814 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3815 correctly. (thanks to Pierre Mai)
3816 * minor incompatible change: The --noprogrammer option is deprecated
3817 in favor of the new --disable-debugger option, which is very similar.
3818 (The major difference is that it takes effect at a slightly different
3819 time at startup, causing handling of errors in --sysinit and
3820 --userinit files will be affected differently.) The
3821 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3822 been added to allow this functionality to be controlled from ordinary
3823 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3824 maintainers, who might want to run non-interactive scripts to
3825 build SBCL cores which will later be used interactively.)
3826 * minor incompatible change: The LOAD function no longer, when given
3827 a wild pathname to load, loads all files matching that pathname.
3828 Instead, an error of type FILE-ERROR is signalled.
3830 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3831 * bug 147 fixed: The compiler preserves its block link/count
3832 invariants more correctly now so that it doesn't crash. (thanks
3834 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3836 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3837 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3838 no-value-for-this-character as NIL (as specified by ANSI).
3839 * HOST-NAMESTRING on physical pathnames now returns a string that is
3840 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3841 (thanks to Christophe Rhodes)
3842 * The Alpha port handles icache flushing more correctly. (thanks to
3844 * More progress has been made toward bootstrapping under CLISP. (thanks
3845 to Christophe Rhodes)
3846 * The fasl file format has changed again, because dynamic loading
3847 on OpenBSD (which has non-ELF object files) motivated some cleanups
3848 in the way that foreign symbols are transformed and passed around.
3849 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3850 is no longer treated as whitespace by the reader, but instead as
3851 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
3852 |A
\x7fB|, instead of A as it used to.
3854 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3855 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3856 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3857 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3858 this as of 0.7.1.45, but was left out of the previous news section
3859 (thanks to Dan Barlow)
3860 * SBCL now runs on the Solaris operating system on SPARC architectures
3861 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3862 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3863 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3864 * SPARC backend cleanups, allowing builds of cores optimized for V8
3865 and V9 SPARCS, and also emission of code targeted to a particular
3866 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3868 * SBCL is closer to bootstrapping under CLISP, thanks to various
3869 fixes by Christophe Rhodes.
3870 * The fasl file format has changed again, to allow the compiler's
3871 INFO database to support symbol macros.
3872 * The user manual (in doc/) is formatted into HTML more nicely.
3873 (thanks to coreythomas)
3874 * The system is smarter about SUBTYPEP relationships, especially
3875 those involving NOT types (including types such as ATOM which are
3876 represented internally using NOT types). Thus SUBTYPEP is less
3877 likely to return (VALUES NIL NIL) in general, and in particular
3878 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3880 * The fasl file format has changed again, because the internal
3881 representation of types now includes a new slot to support the new
3882 SUBTYPEP-of-NOT-types logic.
3883 * (not a change in the main branch of SBCL, but a related prototype
3884 which can hopefully be merged into the main branch of SBCL in the
3885 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3886 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3887 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3888 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3889 dispatch macro character combinations. (thanks to Alexey Dejneka)
3890 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3891 that superficially look like logical namestrings correctly.
3892 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3894 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3895 default supplied-p) for &optional and &key arguments. (thanks to
3898 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3899 * incompatible change: The compiler is now less aggressive about
3900 tail call optimization, doing it only when (> SPACE DEBUG) or
3901 (> SPEED DEBUG). (This is an incompatible change because there are
3902 programs which relied on the old CMU-CL-style behavior to optimize
3903 away their unbounded recursion which will now die of stack overflow.)
3904 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3905 for non-GENCGC systems has been increased to 20M (since that
3906 seems much closer to the likely performance optimum for modern
3907 systems than the old 4M value was)
3908 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3909 and *DEBUG-PRINT-LEVEL*
3910 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3911 of CMU CL's support for SPARC, and various endianness and other
3912 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3913 * new syntactic sugar for the Unix command line: --load foo.bar is now
3914 an alternate notation for --eval '(load "foo.bar")'.
3916 ** The system now detects stack overflow and handles it gracefully,
3917 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3918 optimization settings. (This is a good thing in general, and
3919 its introduction in this version should be particularly timely
3920 for anyone whose code fails because of suppression of tail
3922 ** The system now hunts for the C variable "environ" in a more
3923 devious way, to avoid segfaults when the C library version differs
3924 between compile time and run time. (thanks to Christophe Rhodes)
3925 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3926 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3927 ** The compiler no longer issues bogus style warnings for undefined
3928 classes in the same source file as the DEFCLASSes which defined
3929 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3931 ** fixes in CONDITION class precedence list for undefined function
3932 errors (thanks to Alexei Dejneka)
3933 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3934 correctly. (thanks to Dan Barlow)
3935 ** portability fixes aiming at bootstrapping under CLISP (thanks
3936 to Dave McDonald and Christophe Rhodes)
3937 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3938 ** fixes in type translation and and type inference (thanks to
3940 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3941 ** various fixes in the new ports (thanks to Dan Barlow)
3942 * several changes related to debugging:
3943 ** suppression of tail recursion, as noted above
3944 ** stack overflow detection, as noted above
3945 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3946 is now the default. (For some time encapsulation has been more
3947 reliable than the breakpoint-based :ENCAPSULATE NIL
3948 implementation, at least on X86 systems; and I just noticed that
3949 encapsulation also seems closer to the spirit of the ANSI
3952 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3954 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3955 up properly again. (There was a packaging bug in 0.7.0 which
3956 left their definitions in SB-SYS::LOAD-FOREIGN and
3957 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3958 vital for most things which interface to C-level interfaces,
3959 like extensions working with sockets or databases or
3960 Perl-compatible regexes or whatever, and the need to fix
3961 this bug is the main reason that 0.7.1 was released so
3963 ** DEFGENERIC is now choosier about the methods it redefines, so that
3964 reLOADing a previously-LOADed file containing DEFGENERICs does
3965 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3966 cycle now works as it should. (thanks to Alexey Dejneka)
3967 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3968 fixed by Christophe Rhodes. (He actually submitted this patch
3969 months ago, and I delayed until after 0.7.0.)
3970 ** Bug 111 (internal compiler confusion about runtime checks on
3971 FUNCTION types) was fixed by Alexey Dejneka.
3972 * Some internal cleanups (getting rid of variables which aren't
3973 needed now that the byte interpreter is gone) caused the fasl
3974 file format number to change again.
3976 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3977 * major incompatible change: The default fasl file extension, i.e. the
3978 default extension for files produced by COMPILE-FILE, has changed
3979 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3981 ** There are many changes in the implementation of the compiler.
3982 SBCL is now essentially a compiler-only implementation of ANSI
3983 Common Lisp. EVAL still "interprets" a few special cases, but
3984 almost all the interesting cases are handled by creating
3985 a LAMBDA expression, calling COMPILE on it, then calling
3986 FUNCALL on the result.
3987 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3988 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3989 Since the code is newer, there might still be some new bugs
3990 (though not as many as before Martin Atzmueller's fixes:-). But
3991 the new code is substantially simpler and clearer, and hopefully
3992 any remaining bugs will be simpler, less fundamental, and more
3993 fixable then the bugs in the old code.
3994 ** The revised compiler is still a little unsteady on its feet.
3996 *** The debugging information it produces (particularly the names
3997 of FUNCTION objects) is sometimes much less useful than what
3998 the old compiler produced.
3999 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4000 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4001 within a MACROLET) has been temporarily weakened.
4002 ** There are new compiler optimizations for various functions:
4003 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4004 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4005 *** the math functions TRUNCATE, FLOOR, and CEILING
4006 *** the function-of-all-trades COERCE
4007 Mostly these should be transparent, but there's one
4008 potentially-annoying problem (bug 117): when the compiler
4009 inline-expands a function and does type analysis on the result,
4010 it can create control paths which have type mismatches, and
4011 when it can't prove that those control paths aren't taken,
4012 it will issue WARNINGs about the type mismatches. This is
4013 a particular problem in practice for the new sequence functions.
4014 It's not clear how this should be fixed, and for now, a
4015 workaround is given in the entry for 117 in the BUGS file.
4016 ** (Because of the interaction between the two previous items --
4017 occasional inlining problems and new inline expansions -- some
4018 of the new sequence function optimizations won't really kick in
4019 completely until debugging information, and then inlining, are
4020 straightened out in some future version.)
4021 * minor incompatible changes:
4022 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4023 DIRECTORY no longer implicitly promotes NIL slots of its
4024 pathname argument to :WILD. In particular, when you ask for the
4025 contents of a directory (which you used to be able to do without
4026 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4027 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4028 ** changes in behavior that ANSI explicitly defines to be
4029 implementation dependent:
4030 *** The new compiler-only implementation still conforms with ANSI,
4031 but acts a little different than before. Besides the obvious
4032 changes in performance tradeoffs (that the cost per form passed
4033 to EVAL has gone up, and the cost per form executed by EVAL
4034 has gone down), the behavior of the system changes a little
4035 because there are no longer any interpreted function objects.
4036 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4037 e.g. doing COMPILE on the output of interactive DEFUN is
4039 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4041 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4042 has changed from (:CL) to NIL.
4043 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4044 e.g. #\Newline and #\Tab, don't have names specified in the
4045 ANSI Common Lisp standard, is now based on their ASCII symbolic
4046 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4047 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4048 are no longer used for output.
4049 ** changes in internal implementation constants:
4050 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4051 4 million. (If your application spends a lot of time GCing and
4052 you have a lot of RAM, you might want to experiment with
4053 increasing it even more.)
4054 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4055 However, almost all old code should still continue to work without
4056 immediate update, as SB-C-CALL is now a (deprecated) nickname
4058 ** Old operator names in the style DEF-FOO are now deprecated in
4059 favor of new corresponding names DEFINE-FOO, for consistency with
4060 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4061 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4062 internal symbols, but a few supported extensions like
4063 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4064 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4065 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4066 etc. as you get deeper into recursive calls to the debugger
4067 command loop, instead of the old "5]", "5]]", "5]]]"
4068 sequence. (I was motivated to do this when squabbles between
4069 ILISP and SBCL left me very deeply nested in the debugger. In the
4070 short term, this change will probably provoke more ILISP/SBCL
4071 squabbles, but hopefully it will be an improvement in the long run.)
4072 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4073 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4074 function, since declaiming return types involving aliens is
4075 (1) annoyingly messy to do by hand and (2) vital to efficient
4076 compilation of code which calls such functions.
4077 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4078 longer reexported by the SB-EXT package. They're solely useful
4079 for alien code, so it seems more logical that you should get
4080 them from the SB-ALIEN package, not in SB-EXT.
4081 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4082 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4083 features. Instead, the code that they used to control is always
4084 built into the system.
4085 * many other bug fixes
4086 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4087 advantage of the new EVAL-WHEN stuff and to clean them up in
4088 general, and they are now more ANSI-compliant in a number of
4089 ways. Martin Atzmueller is responsible for a lot of this.
4090 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4092 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4093 *** correct ERROR type for various file operations
4094 *** some fixes for Lisp streams
4095 *** DEFMETHOD syntax checking
4096 *** changing old weird representation of debug information as
4097 strings (which, among their other deficiencies, don't transform
4098 correctly when you rename packages, and don't change their
4099 print representation when you change things like *PACKAGE*
4100 and *PRINT-LENGTH*) to symbols and lists of symbols
4101 He also made several improvements and fixed several bugs in DESCRIBE.
4102 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4104 *** misbehavior of WRITE-STRING/WRITE-LINE
4105 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4106 and several other LOOP problems as well
4107 *** DIRECTORY when similar filenames are present
4108 *** DEFGENERIC with :METHOD options
4109 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4110 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4111 *** argument ordering in FIND with :TEST option
4112 *** mishandled package designator argument in APROPOS-LIST
4113 *** various problems in the backquote readmacro
4114 *** a bug in APROPOS
4115 *** probably some others that I'm not describing very well here,
4116 since the CVS log documents them by reference to sbcl-devel
4117 messages, and the SourceForge archives aren't working well.:-(
4118 ** Dan Barlow improved the Alpha port (and is making progress on the
4119 PPC port, for those of you who think different).
4120 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4121 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4122 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4123 continues to work on the SPARC port (for those of you in a position
4124 to look down upon our little PC-compatible boxes from a great height).
4125 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4126 and uses that copy, rather than the current dynamic value, when
4127 it's trying to decide whether to truncate output. Thus e.g.
4128 (let ((*print-lines* 50))
4129 (pprint-logical-block (stream nil)
4131 (let ((*print-lines* 8))
4132 (print (aref possiblybigthings i) stream)))))
4133 should now truncate the logical block only at 50 lines, instead of
4134 often truncating it at 8 lines, as it did before.
4135 * The doc/cmucl/ directory, containing old CMU CL documentation
4136 from the time of the fork, is no longer part of the base system.
4137 SourceForge has shut down its anonymous FTP service, and with it
4138 my original plan for distributing the old CMU CL documentation
4139 there. For now, if you need these files you can download an old
4140 SBCL source release and extract them from it.
4141 * The fasl file version number changed again, for dozens of reasons,
4142 some of which are apparent above.
4144 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4145 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4146 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4147 patch, so that DISASSEMBLE output is much nicer.
4148 * The code in the SB-PROFILE package now seems reasonably stable.
4149 I still haven't decided what the final interface should look like
4150 (I'd like PROFILE to interact cleanly with TRACE, since both
4151 facilities use function encapsulation) but if you have a need
4152 for profiling now, you can probably use it successfully with
4153 the current CMU-CL-style interface.
4154 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4155 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4156 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4157 link now returns the dangling link itself, and for similar
4158 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4159 link itself. (In these cases the old code signalled an error and
4160 looped endlessly, respectively.) Thus, DIRECTORY now works even
4161 in the presence of dangling and cyclic symbolic links.
4162 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4163 is now a supported extension again, since the consensus on
4164 sbcl-devel was that it can be useful for ordinary development
4165 work, not just for debugging SBCL itself.
4166 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4167 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4168 that currently-defined functions might be redefined later with
4169 different return types.
4170 * Hash tables can be printed readably, as inspired by CMU CL code
4171 of Eric Marsden and SBCL code of Martin Atzmueller.
4172 * better error handling in CLOS method combination, thanks to
4173 Martin Atzmueller porting Pierre Mai's CMU CL patches
4174 * more overflow fixes for >16Mbyte I/O buffers
4175 * A bug in READ has been fixed, so that now a single Ctrl-D
4176 character suffices to cause end-of-file on character streams.
4177 In particular, now you only need one Ctrl-D at the command
4178 line (not two) to exit SBCL.
4179 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4181 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4182 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4183 does the right thing.
4184 * The implementation of some type tests, especially for CONDITION
4185 types, is now tidier and maybe faster, due to CMU CL code
4186 originally by Douglas Crosher, ported by Martin Atzmueller.
4187 * Some math functions have been fixed, and there are new
4188 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4189 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4190 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4191 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4192 likely to be built into sbcl-0.7.0.)
4193 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4194 CL, ported to SBCL by Martin Atzmueller)
4195 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4196 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4197 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4198 * There's a new slam.sh hack to shorten the edit/compile/debug
4199 cycle for low-level changes to SBCL itself, and a new
4200 :SB-AFTER-XC-CORE target feature to control the generation of
4201 the after-xc.core file needed by slam.sh.
4202 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4203 COMPILE-FILE is no longer supported, so that now every function
4204 gets an entry point, so that block compilation looks a little
4205 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4206 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4207 returns the number of bytes consed since the system started,
4208 rather than the number consed since the first time the function
4209 was called. (The new definition parallels ANSI functions like
4210 CL:GET-INTERNAL-RUN-TIME.)
4211 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4212 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4213 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4214 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4215 * Fasl file version numbers are now independent of the target CPU,
4216 since historically most system changes which required version
4217 number changes have affected all CPUs equally. Similarly,
4218 the byte fasl file version is now equal to the ordinary
4221 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4222 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4223 is no longer recognized. I apologize for this, because it was
4224 listed in SB-EXT as a supported extension, but I found that
4225 its existing behavior was poorly specified, as well as incorrectly
4226 specified, and it looked like too much of a mess to straighten it
4227 out. I have enough on my hands trying to get ANSI stuff to work..
4228 * many patches ported from CMU CL by Martin Atzmueller, with
4229 half a dozen bug fixes in pretty-printing and the debugger, and
4230 half a dozen others elsewhere
4231 * fixed bug 13: Floating point infinities are now supported again.
4232 They might still be a little bit flaky, but thanks to bug reports
4233 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4234 as flaky as they were.
4235 * The --noprogrammer command line option is now supported. (Its
4236 behavior is slightly different in detail from what the old man
4237 page claimed it would do, but it's still appropriate under the
4238 same circumstances that the man page talks about.)
4239 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4240 are now supported, and enabled by default. Thus, the compiler can
4241 handle many floating point and complex operations much less
4242 inefficiently. (Thus e.g. you can implement a complex FFT
4244 * The compiler now detects type mismatches between DECLAIM FTYPE
4245 and DEFUN better, and implements CHECK-TYPE more correctly, and
4246 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4247 thanks to patches from Martin Atzmueller.
4248 * various fixes to make the cross-compiler more portable to
4249 ANSI-conforming-but-different cross-compilation hosts (notably
4250 Lispworks for Windows, following bug reports from Arthur Lemmens)
4251 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4252 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4253 fixed thanks to Pierre Mai's CMU CL patches.
4254 * fixes to keep the system from overflowing internal counters when
4255 it tries to use i/o buffers larger than 16M bytes
4256 * fixed bug 45a: Various internal functions required to support
4257 complex special functions have been merged from CMU CL sources.
4258 (When I was first setting up SBCL, I misunderstood a compile-time
4259 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4260 * improved support for type intersection and union, fixing bug 12
4261 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4262 more obscure bugs as well
4263 * some steps toward byte-compiling non-performance-critical
4264 parts of the system, courtesy of patches from Martin Atzmueller
4265 * Christophe Rhodes has made some debian packages of sbcl at
4266 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4267 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4268 stable, but are nonetheless usable. When he's ready, I'd be happy
4269 to add them to the SourceForge "File Releases" section. (And if
4270 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4271 * new fasl file format version number (because of changes in
4272 internal representation of (OR ..) types to accommodate the new
4273 support for (AND ..) types, among other things)
4275 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4276 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4278 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4280 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4281 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4282 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4283 * DESCRIBE now works on structure objects again.
4284 * Most function call argument type mismatches are now handled as
4285 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4286 know whether the function will be redefined before the call is
4287 executed. (The compiler could flag local calls with full WARNINGs,
4288 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4289 it doesn't keep track of enough information to know whether calls
4290 are local in this sense.)
4291 * Compiler output is now more verbose, with messages truncated
4292 later than before. (There should be some supported way for users
4293 to override the default verbosity, but I haven't decided how to
4294 provide it yet, so this behavior is still controlled by the internal
4295 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4296 src/compiler/ir1util.lisp.)
4297 * Fasl file format version numbers have increased again, because
4298 support for the Gray streams extension changes the layout of the
4299 system's STREAM objects.
4300 * The Gray subclassable streams extension now works, thanks to a
4301 patch from Martin Atzmueller.
4302 * The full LOAD-FOREIGN extension (not just the primitive
4303 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4304 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4305 but like most other programs, it defaults to copying the Unix
4306 environment from the original process instead of starting the
4307 new process in an empty environment.
4308 * Extensions which manipulate the Unix environment now support
4309 an :ENVIRONMENT keyword option which doesn't smash case or
4310 do other bad things. The CMU-CL-style :ENV option is retained
4311 for porting convenience.
4312 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4313 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4315 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4317 * A patch from Martin Atzmueller seems to have solved the SIGINT
4318 problem, and as far as we know, signal-handling now works cleanly.
4319 (If you find any new bugs, please report them!)
4320 * The system no longer defaults Lisp source file names to types
4321 ".l", ".cl", or ".lsp", but only to ".lisp".
4322 * The compiler no longer uses special default file extensions for
4323 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4324 seems to expect a single default extension for all compiled code,
4325 and there's no compelling reason to try to stretch the standard
4326 to allow two different extensions.) Instead, byte-compiled files
4327 default to the same extension as native-compiled files.
4328 * Fasl file format version numbers have increased again, because
4329 a rearrangement of internal implementation packages made some
4330 dumped symbols in old fasl files unreadable in new cores.
4331 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4332 many fewer weird special cases.
4333 * Bug #17 (differing COMPILE-FILE behavior between logical and
4334 physical pathnames) has been fixed, and some related misbehavior too,
4335 thanks to a patch from Martin Atzmueller.
4336 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4337 by Tim Moore, ported to SBCL by Martin Atzmueller.
4338 * Martin Atzmueller fixed several filesystem-related problems,
4339 including bug #36, in part by porting CMU CL patches, which were
4340 written in part by Paul Werkowski.
4341 * More compiler warnings in src/runtime/ are gone, thanks to
4342 more patches from Martin Atzmueller.
4343 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4346 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4348 * DESCRIBE now works on CONDITION objects.
4349 * The debugger now handles errors which arise when trying to print
4350 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4352 * The build system now uses an additional file, customize-target-features.lisp,
4353 to allow local modifications to the target *FEATURES* list. (The point of
4354 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4355 debugging features enabled, without having to worry about propagating it
4356 into everyone's system when I do a "cvs update".) When no
4357 customize-target-features.lisp file exists, the target *FEATURES* list
4358 should be constructed the same way as before.
4359 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4360 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4361 warn about behavior which is undefined under the ANSI spec. Note: This
4362 is specified by ANSI, but it's not very popular with programmers.
4363 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4364 macro in the SBCL sources for an example of a workaround which you
4365 might use to make portable ANSI-standard code which does what you want.
4366 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4367 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4368 when it's used as a non-toplevel form. (This is required in order
4369 to implement the DEFCONSTANT-EQX macro.)
4370 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4371 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4372 funny things, due to bugs in the implementation of EVAL-WHEN
4373 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4374 non-toplevel DEFCONSTANTs are uncommon.)
4375 * The core file version number and fasl file version number have been
4376 incremented, because the old noncompliant DEFCONSTANT behavior involved
4377 calling functions which no longer exist, and because I also took the
4378 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4379 * fixed bug 1 (error handling before read-eval-print loop starts), and
4380 redid debugger restarts and related debugger commands somewhat while
4382 ** The QUIT debugger command is gone, since it did something
4383 rather different than the SB-EXT:QUIT command, and since it never
4384 worked properly outside the main toplevel read/eval/print loop.
4385 Invoking the new TOPLEVEL restart provides the same functionality.
4386 ** The GO debugger command is also gone, since you can just invoke
4387 the CONTINUE restart directly instead.
4388 ** The TOP debugger command is also gone, since it's redundant with the
4389 FRAME 0 command, and since it interfered with abbreviations for the
4391 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4393 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4394 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4395 some porting work by Martin Atzmueller)
4396 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4397 with a boatload of patches which he ported to SBCL. Now that those
4399 ** The system tries to make sure that its low-priority messages
4400 are prefixed by semicolons, to help people who like to use
4401 syntax highlighting in their ILISP buffer. (This patch
4402 was originally due to Raymond Toy.)
4403 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4404 patches originally written by Raymond Toy.
4405 ** The compiler understands coercion between single-value and
4406 multiple-VALUES type expressions better, getting rid of some very
4407 weird behavior, thanks to patches originally by Robert MacLachlan
4408 and Douglas Crosher.
4409 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4410 lambda lists, thanks to a patch originally by Pierre Mai.
4411 ** The system no longer bogusly warns about "abbreviated type
4413 ** The compiler gets less confused by inlining and RETURN-FROM,
4414 thanks to some patches originally by Tim Moore.
4415 ** The system no longer hangs when dumping circular lists to fasl
4416 files, thanks to a patch originally from Douglas Crosher.
4417 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4418 undefined function error.
4419 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4420 in structure slot initforms) for now, documented workaround instead:-|
4421 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4422 * fixed bug 5: added stubs for various Gray stream functions called
4423 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4424 installed, at least appropriate type errors are generated
4425 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4426 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4427 consistently in DEFMETHOD forms.
4428 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4429 it doesn't seem to affect SBCL after all
4430 * The C runtime system now builds with better optimization and many
4431 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4433 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4435 * The system is now under CVS at SourceForge (instead of the
4436 CVS repository on my home machine).
4437 * The new signal handling code has been tweaked to treat register
4438 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4439 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4440 downstream, e.g. in debug-int.lisp, has implicit dependencies
4441 on the unsignedness of integer representation of machine words,
4442 and that caused the system to bomb out with infinite regress
4443 when trying to recover from type errors involving signed values,
4444 e.g. (BUTLAST '(1 2 3) -1).)
4445 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4446 (This was one of the bugs Peter Van Eynde reported back in July.)
4447 * The system now uses code inspired by Colin Walters' O(N)
4448 implementation of MAP (from the cmucl-imp@cons.org mailing
4449 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4450 inline the MAP operation, and there is more than one
4451 sequence argument to the MAP call (so that it can't just
4452 do ETYPECASE once and for all based on the type of the
4453 single sequence argument). (The old non-inline implementation
4454 of the general M-argument sequence-of-length-N case required
4455 O(M*N*N) time when any of the sequence arguments were LISTs.)
4456 * The QUIT :UNIX-CODE keyword argument has been renamed to
4457 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4458 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4460 * Raymond Wiker's patches to port dynamic loading from Linux to
4461 FreeBSD have been added.
4462 * The BUGS file is now more nearly up to date, thanks in large part
4463 to Martin Atzmueller's review of it.
4464 * The debugger now flushes standard output streams before it begins
4465 its output ("debugger invoked" and so forth).
4466 * The core version number and fasl file version number have both
4467 been incremented, because of incompatible changes in the layout
4469 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4470 used to not be called for a saved Lisp image.)
4471 * Martin Atzmueller's version of a patch to fix a compiler crash,
4472 as posted on sbcl-devel 13 September 2000, has been installed.
4473 * Instead of installing Martin Atzmueller's patch for the
4474 compiler transform for SUBSEQ, I deleted the compiler transform,
4475 and transforms for some similar consing operations.
4476 * A bug in signal handling which kept TRACE from working on OpenBSD
4478 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4479 away by constant folding
4480 * The system now defines its address space constants in one place
4481 (in the Lisp sources), and propagates them automatically elsewhere
4482 (through GENESIS and the sbcl.h file). Therefore, patching the
4483 address map is less unnecessarily tedious and error-prone. The
4484 Lisp names of address space constants have also been systematized.
4485 * CVS tags like dollar-Header-dollar have been removed from
4486 the sources, because they have never saved me trouble and
4487 they've been source of trouble working with patches and other
4488 diff-related operations.
4489 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4490 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4492 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4494 * The system has been ported to OpenBSD.
4495 * The system now compiles with a simple "sh make.sh" on the systems
4496 that it's supported on. I.e., now you no longer need to tweak
4497 text in the target-features.lisp-expr and symlinks in src/runtime/
4498 by hand, the make.sh takes care of it for you.
4499 * The system is no longer so grossly inefficient when compiling code
4500 involving vectors implemented as general (not simple) vectors (VECTOR T),
4501 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4502 which dares to use the various sequence functions on non-simple
4503 vectors, takes less of a performance hit.
4504 * There is now a primitive type predicate VECTOR-T-P
4505 to test for the (VECTOR T) type, so that e.g.
4506 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4507 can now be compiled with some semblance of efficiency. (The old code
4508 turned the type declaration into a full call to %TYPEP at runtime!)
4509 * AREF on (VECTOR T) is still not fast, since it's still compiled
4510 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4511 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4512 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4513 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4514 without making full calls to SUBTYPEP at runtime.
4515 (Some analogous efficiency issues for non-simple vectors specialized to
4516 element types other than T, or for non-simple multidimensional arrays,
4517 have not been addressed. They could almost certainly be handled the
4518 same way if anyone is motivated to do so.)
4519 * The changes in array handling break binary compatibility, so
4520 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4521 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4522 instead of (VALUES T T).
4523 * By following the instructions that Dan Barlow posted to sbcl-devel
4524 on 2 July 2000, I was able to enable primitive dynamic object
4525 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4526 functionality is not implemented (since it calls ld to resolve
4527 library references automatically, requiring RUN-PROGRAM for its
4528 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4529 try to resolve library references) is now supported.
4530 * The system now flushes the standard output streams when it terminates,
4531 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4532 them at several other probably-convenient times, e.g. in each pass of
4533 the toplevel read-eval-print loop, and after evaluating a form given
4534 as an "--eval" command-line option. (These changes were motivated by a
4535 discussion of stream flushing issues on cmucl-imp in August 2000.)
4536 * The source transform for TYPEP of array types no longer assumes
4537 that an array whose element type is a not-yet-defined type
4538 is implemented as an array of T, but instead punts, so that the
4539 type will be interpreted at runtime.
4540 * There is now some support for cross-compiling in make.sh: each of
4541 the phases of make.sh has its own script. (This should be transparent
4542 to people doing ordinary, non-cross-compile builds.)
4543 * Since my laptop doesn't have hundreds of megabytes of memory like
4544 my desktop machine, I became more motivated to do some items on
4545 my to-do list in order to reduce the size of the system a little:
4546 ** Arrange for various needed-only-at-cold-init things to be
4547 uninterned after cold init. To support this, those things have
4548 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4549 symbols with such names are now uninterned after cold init).
4550 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4551 fasl files for cold load.
4552 ** Remove the old compiler structure pooling code (which used to
4553 be conditional on the target feature :SB-ALLOC) completely.
4554 ** Redo the representation of some data in cold init to be more compact.
4555 (I also looked into supporting byte compiled code at bootstrap time,
4556 which would probably reduce the size of the system a lot, but that
4557 looked too complicated, so I punted for now.)
4558 * The maximum signal nesting depth in the src/runtime/ support code has
4559 been reduced from 4096 to 256. (I don't know any reason for the very
4560 large old value. If the new smaller value turns out to break something,
4561 I'll probably just bump it back up.)
4562 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4564 * Many, many bugs reported by Peter Van Eynde have been added to
4565 the BUGS list; some have even been fixed.
4566 * While enabling dynamic object file loading, I tried to make the
4567 code easier to understand, renaming various functions and variables
4568 with less ambiguous names, and changing some function calling
4569 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4570 * While trying to figure out how to do the OpenBSD port, I tried to
4571 clean up some of the code in src/runtime/. In particular, I dropped
4572 support for non-POSIX signal handling, added various comments,
4573 tweaked the code to reduce the number of compilation warnings, and
4574 renamed some files to increase consistency.
4575 * To support the new automatic configuration functionality in make.sh,
4576 the source file target-features.lisp-expr has been replaced with the
4577 source file base-target-features.lisp-expr and the machine-generated
4578 file local-target-features.lisp-expr.
4579 * fixed a stupid quoting error in make.sh so that using CMU CL
4580 "lisp -batch" as cross-compilation host works again
4582 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4584 * DESCRIBE no longer tries to call itself recursively to describe
4585 bound/fbound values, so that it no longer fails on symbols which are
4586 bound to themselves (like keywords, T, and NIL).
4587 * DESCRIBE now works on generic functions.
4588 * The printer now prints less-screwed-up representations of closures
4589 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4590 * A private symbol is used instead of the :EMPTY keyword previously
4591 used to mark empty slots in hash tables. Thus
4592 (DEFVAR *HT* (MAKE-HASH-TABLE))
4593 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4594 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4595 now does what ANSI says that it should. (You can still get
4596 similar noncompliant behavior if bang on the hash table
4597 implementation with all the symbols you get back from
4598 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4599 This breaks binary compatibility, since tests for equality to
4600 :EMPTY are wired into things like the macroexpansion of
4601 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4603 * There's now a minimal placeholder implementation for CL:STEP,
4604 as required by ANSI.
4605 * An obscure bug in the interaction of the normal compiler, the byte
4606 compiler, inlining, and structure predicates has been patched
4607 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4608 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4610 * Missing ordinary arguments in a macro call are now detected even
4611 when the macro lambda list contains &KEY or &REST.
4612 * The debugger no longer complains about encountering the top of the
4613 stack when you type "FRAME 0" to explicitly instruct it to go to
4614 the top of the stack. And it now prints the frame you request even
4615 if it's the current frame (instead of saying "You are here.").
4616 * As specified by ANSI, the system now always prints keywords
4617 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4619 * The default initial SIZE of HASH-TABLEs is now smaller.
4620 * Type information from CLOS class dispatch is now propagated
4621 into DEFMETHOD bodies, so that e.g.
4622 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4624 is now basically equivalent to
4625 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4626 (DECLARE (TYPE SINGLE-FLOAT X))
4628 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4629 operation, without having to do run-time type dispatch.
4630 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4631 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4632 * Since I don't seem to be making big file reorganizations very often
4633 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4634 is overflowing my ability to conveniently back them up), I've finally
4635 checked the system into CVS. (The CVS repository is on my home system,
4636 not at SourceForge -- putting it on SourceForge might come later.)
4637 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4638 high-level GC-NOTIFY-FOO functions send their output. (There's
4639 still very little control of where low-level verbose GC functions
4640 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4641 less than it used to -- the GC-NOTIFY-FOO functions are now under
4642 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4643 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4644 in only one place in the source code, and propagates it automatically
4645 everywhere that it's needed. Thus e.g. when I bump the version from
4646 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4647 * The C source files now include boilerplate legalese and documentation
4648 at the head of each file (just as the Lisp source files already did).
4649 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4650 to his page will be replaced with a link to his new CLiki service.
4652 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4654 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4655 * The build process now looks for GNU make under the default name "gmake",
4656 instead of "make" as it used to. If GNU make is not available as "gmake"
4657 on your system, you can change this default behavior by setting the
4658 GNUMAKE environment variable.
4659 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4660 can build without error under CMU CL.
4662 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4664 * There is now a partial SBCL user manual (with some new text and some
4665 text cribbed from the CMU CL manual).
4666 * The beginnings of a profiler have been added (starting with the
4667 CMU CL profiler and simplifying and cleaning up). Eventually the
4668 main interface should be through the TRACE macro, but for now,
4669 it's still accessed through vaguely CMU-CL-style functions and macros
4670 exported from the package SB-PROFILE.
4671 * Some problems left over from porting CMU CL to the new
4672 cross-compilation bootstrap process have been cleaned up:
4673 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4674 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4675 part when getting rid of the compiler *BACKEND* stuff.)
4676 ** The value of *NULL-TYPE* was screwed up, because it was
4677 being initialized before the type system knew the final
4678 definition of the 'NULL type. This screwed up several key
4679 optimizations in the compiler, causing inefficiency in all sorts
4680 of places. (I found it because I wanted to understand why
4681 GET-INTERNAL-RUN-TIME was consing.)
4682 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4683 PROCLAIM FTYPE information. Unfortunately this broke binary
4684 compatibility again, since now the forms output by DEFGENERIC
4685 to refer to functions which didn't exist in 0.6.3.
4686 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4687 can use the new (as of 0.6.3) transform for SOME into MAP into
4689 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4690 values to (INTEGER 0 1000000), so that the time code will no longer
4691 occasionally get blown up by Linux returning 1000000 microseconds
4692 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4693 its output conform to the ANSI spec. (Alas, this makes its output
4694 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4695 * A full call to MAP NIL with a single sequence argument no longer conses.
4696 * fixes to problems pointed out by Martin Atzmueller:
4697 * The manual page no longer talks about multiprocessing as though
4698 it were currently supported.
4699 * The ILISP support patches have been removed from the distribution,
4700 because as of version 5.10.1, ILISP now supports SBCL without us
4701 having to maintain patches.
4702 * added a modified version of Raymond Toy's recent CMU CL patch for
4703 EQUALP comparison of HASH-TABLE
4705 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4707 * The system still can't cross-compile itself with
4708 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4709 entails), but at least it can compile more of itself that way
4710 than it used to be able to, and various buglets which were uncovered
4711 by trying to cross-compile itself that way have now been fixed.
4712 * This release breaks binary compatibility again. This time
4713 at least I've incremented the FASL file format version to 2, so that the
4714 problem can be detected reliably instead of just causing weird errors.
4715 * various new style warnings:
4716 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4717 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4718 ** using the lexical binding of a variable named in the *FOO* style
4719 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4720 as specified by ANSI.
4721 * *RANDOM-STATE* is no longer automatically initialized from
4722 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4723 default behavior of the system is to repeat its behavior every time
4724 it's run. If you'd like to change this behavior, you can always
4725 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4726 old convention there was no comparably easy way to get the system to
4727 repeat its behavior every time it was run.
4728 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4729 FTYPE declarations has been removed, in favor of their ANSI
4730 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4731 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4732 the types of their sequence arguments can be determined at compile time.
4733 This is done through a new open code expansion for MAP which eliminates
4734 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4735 argument types can be determined at compile time.
4736 * The optimizer now transforms COERCE into an identity operation when it
4737 can prove that the coerced object is already of the correct type. (This
4738 can be a win for machine generated code, including the output of other
4739 optimization transforms, such as the MAP transform above.)
4740 * Credit information has been moved from source file headers into CREDITS.
4741 * Source file headers have been made more standard.
4742 * The CASE macro now compiles without complaining even when it has
4745 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4747 * (Note that the way that the PCL macroexpansions were rewritten
4748 to accommodate the change in DEFGENERIC below breaks binary
4749 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4750 not run under sbcl-0.6.2. Once we get out of alpha releases,
4751 i.e. hit release 1.0.0, we'll probably try to maintain binary
4752 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4753 and sbcl-1.4.4. Until then, however, it might be fairly common
4754 for maintenance releases to break binary compatibility.)
4755 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4757 * The reporting of unhandled signals has been changed to print some
4758 explanatory text as well as the report form. (Previously only
4759 the report form was printed.)
4760 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4761 it defines, so that the compiler no longer issues undefined function
4762 warnings for compiled-but-not-yet-loaded generic functions.
4763 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4764 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4765 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4766 section of the ANSI spec are supported.
4767 * The "" nickname for the "KEYWORD" package has been removed.
4768 The reader still handles symbol tokens which begin with a package marker
4769 as keywords, but it doesn't expose its mechanism for doing so in the
4770 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4771 * The system now issues STYLE-WARNINGs for contradictory TYPE
4772 proclamations. (Warnings for contradictory FTYPE proclamations would
4773 be nice too, but those can't be done usefully unless the type system
4774 is made smarter about FUNCTION types.)
4775 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4776 systematized, so that "*target-*.lisp is supposed to exist only on the
4777 target and imply that there's a related file which exists on the
4778 host, and *host-*.lisp is supposed to exist only on the host and imply
4779 that there's a related file which exists on the target. This involves a
4780 lot of renaming. Hopefully the acute confusion caused by the renaming
4781 will be justified by the reduction in chronic confusion..
4782 ** runtime-type.lisp -> early-target-type.lisp
4783 ** target-type.lisp -> late-target-type.lisp
4784 ** early-host-format.lisp -> early-format.lisp
4785 ** late-host-format.lisp -> late-format.lisp
4786 ** host-error.lisp -> misc-error.lisp
4787 ** early-error.lisp -> early-target-error.lisp
4788 ** late-error.lisp -> late-target-error.lisp
4789 ** host-defboot.lisp -> early-defboot.lisp
4790 ** code/misc.lisp -> code/target-misc.lisp
4791 ** code/host-misc.lisp -> code/misc.lisp
4792 ** code/numbers.lisp -> code/target-numbers.lisp
4793 ** code/early-numbers.lisp -> numbers.lisp
4794 ** early-host-type.lisp -> early-type.lisp
4795 ** late-host-type.lisp -> late-type.lisp
4796 ** host-typep.lisp -> typep.lisp
4797 ** load.lisp -> target-load.lisp
4798 ** host-load.lisp -> load.lisp
4799 ** host-disassem.lisp -> disassem.lisp
4800 ** host-insts.lisp -> insts.lisp
4801 ** byte-comp.lisp -> target-byte-comp.lisp
4802 ** host-byte-comp.lisp -> byte-comp.lisp
4803 ** host-signal.lisp -> signal.lisp
4804 ** host-defstruct.lisp -> defstruct.lisp
4805 ** late-target-type.lisp -> deftypes-for-target.lisp
4806 Furthermore, several other previously target-only files foo.lisp (e.g.
4807 hash-table.lisp and random.lisp) have been split into a target-and-host
4808 foo.lisp file and a target-only target-foo.lisp file, with their key type
4809 definitions in the target-and-host part, so that the cross-compiler will
4810 know more about target types.
4811 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4812 gone away. In their place are various *BACKEND-FOO* variables
4813 corresponding to the slots of the old structure.
4814 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4815 into the target SBCL has been fixed.
4816 * The chill.lisp system for loading cold code into a running SBCL
4818 * Support for the CMU CL "scavenger hook" extension has been removed.
4819 (It was undocumented and unused in the CMU CL sources that SBCL was
4820 derived from, and stale in sbcl-0.6.1.)
4821 * Various errors in the cross-compiler type system were detected
4822 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4823 (enabling various consistency checks). Many of them were fixed,
4824 but some hard problems remain, so the compiler is back to
4825 running without *TYPE-SYSTEM-INITIALIZED* for now.
4826 * As part of the cross-compiler type system cleanup, I implemented
4827 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4828 * I have started adding UNCROSS calls throughout the type system
4829 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4830 on cross-compiler input files will be able to go away, and various
4832 * CONSTANTP now returns true for quoted forms (as explicitly required
4835 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4837 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4838 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4839 (MAKE-LIST -1). In the longer term, it ought to become true
4840 that declarations are assertions even at SAFETY 1. For now, it's not
4841 quite true even at SAFETY 3, but it's at least more nearly true..
4842 (Note that this change seems to increases the size of the system by
4843 O(5%) and to decrease the speed of the compiler by 20% or more.)
4844 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4845 for the problem of printing dozens of lines of distracting information
4846 about low-level system machinery as part of the top stack frame
4847 on entry to the debugger when an undefined function was called.
4848 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4849 is not reset to COMMON-LISP-USER.
4850 * Compilation of stuff related to dyncount.lisp has been made conditional
4851 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4852 smaller. The various dyncount-related symbols have been moved into
4853 a new "SB-DYNCOUNT" package.
4854 * tty-inspect.lisp has been renamed to inspect.lisp.
4855 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4856 feature has gone away. (When we eventually port to other flavors of
4857 libc and/or Unix, we'll try to make the differences between flavors
4858 invisible at the user level.)
4859 * Various other *FEATURES* tags, and/or their associated conditionals,
4860 have been removed if obsolescent, or given better documentation, or
4861 sometimes given more-mnemonic names.
4863 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4865 * tidied up "make.sh" script
4866 * tidied up system directory structure
4867 * better "clean.sh" behavior
4868 * added doc/FOR-CMUCL-DEVELOPERS
4869 * many many small tweaks to output format, e.g. removing possibly-confusing
4870 trailing #\. character in DESCRIBE-INSTANCE
4871 * (EQUALP #\A 'A) no longer signals an error.
4872 * new hashing code, including EQUALP hashing
4873 * tidied up Lisp initialization and toplevel
4874 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4875 * command line argument processing
4876 * added POSIX-GETENV function to deal with Unix-ish environment variables
4877 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4878 terminating SBCL on EOF
4879 * non-verbose GC by default
4880 * There is no more "sbcl" shell script; the sbcl file is now the C
4881 runtime executable (just like CMU CL).
4882 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4884 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4885 symbol and package information as Lisp native symbol and package objects
4886 instead of strings naming symbols and strings naming packages. This way,
4887 whenever packages are renamed (as in warm init), debug information is
4888 transformed along with everything else.
4889 * tweaked the optimization policy declarations which control the building
4890 of SBCL itself. Now, among other things, the system no longer saves
4891 source location debugging information. (This helps two problems at once
4892 by reducing SBCL size and by keeping SBCL from trying to look for its
4893 sources -- which may not exist -- when reporting errors.)
4894 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4895 debugging and testing purposes
4896 * cleaned up printing, making the printer call PRINT-OBJECT for
4897 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4898 methods, giving nearly-ANSI behavior
4899 * converted almost all special variables to use *FOO* naming convention
4900 * deleted PARSE-TIME functionality, since it can be done portably
4901 * moved some files out of cold init into warm init
4902 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4904 * regularized formatting of source files
4905 * added an install.sh script
4906 * fixed ridiculous memory usage of cross-compiler by making
4907 compiler/alloc.lisp not try to do pooling unless it can hook
4908 itself into the GC of the cross-compilation host. Now the system
4909 builds nicely on my old laptop.
4910 * added :SB-ALLOC in target-features.lisp-expr
4911 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4912 was not implemented)
4913 * re-did condition handling and note reporting in the compiler. Notes
4914 are no longer handled by signalling conditions. Style warnings
4915 and warnings are handled more correctly and reported in such a way
4916 that it's easy to find one or the other in your output (so that you
4917 can e.g. figure out which of many problems caused COMPILE-FILE to
4919 * changed the severity of several compiler warnings from full WARNING
4920 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4921 compiler note reporting so that it doesn't use the condition system
4922 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4923 COMPILE-FILE command)
4924 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4925 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4926 no longer supported, since their implementation was deeply intertwingled
4927 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4928 * removed bogus "support" for compiler macros named (SETF FOO), and
4929 removed the compiler macro for SETF INFO (but only after making a fool
4930 of myself on the cmucl-imp mailing list by posting a bogus patch for
4931 DEFINE-COMPILER-MACRO..)
4932 * Compiled files containing forms which have side effects on the Lisp
4933 reader (such as DEFPACKAGE forms) are now handled more correctly.
4934 (Compiler queuing of top level lambdas has been suppressed by setting
4935 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4936 * deleted various currently-unused source files, e.g. gengc.lisp. They
4937 may be added back at some point e.g. when porting to other architectures,
4938 but until they are it's distracting to distribute them and to try to
4940 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4941 there were so many of them they're just distractions, and UNCROSS is
4942 known to be able to handle the current sources
4943 * moved PROFILE functionality into TRACE, so that it will be clear
4944 how the wrapping and unwrapping of functions when you profile them
4945 interacts with the wrapping and unwrapping of functions when you
4946 trace them. (Actually, the functionality isn't there yet, but at least
4947 the interface specification is there. Hopefully, the functionality will
4948 arrive with some future maintenance release.)
4949 * removed host-oops.lisp
4950 * changed signature of QUIT function to allow UNIX-CODE argument
4951 * fixed READ-SEQUENCE bug
4952 * tweaked verbose GC output so that it looks more like the progress
4953 output that ANSI specifies for functions like LOAD
4954 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4955 * added <http://sbcl.sourceforge.com> to the banner information printed by