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.
32 changes in sbcl-1.0.23 relative to 1.0.22:
33 * enhancement: when disassembling method functions, disassembly
34 for the associated fast function is also produced.
35 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
37 * optimization: printing with *PRINT-PRETTY* true is now more
38 efficient as long as the object being printed doesn't require
39 special handling by the pretty printer.
40 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
41 now interact correctly with type declarations.
42 * partial bug fix: PCL detects infinite recursion during wrapper
43 validation. (thanks to Attila Lendvai)
44 * bug fix: #426; nested function calls are inlined properly.
45 Previously if FOO was an inline function, in calls of the form
46 (FOO (FOO ...)) the outer call was not inlined.
47 * bug fix: long long arguments passed in registers to alien
48 functions on PowerPC Linux and NetBSD are now handled correctly
49 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
51 changes in sbcl-1.0.22 relative to 1.0.21:
52 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
53 for the shared object in the current directory, but passes the native
54 namestring of the designated pathname to the operation system's shared
55 object loading function as-it.
56 * minor incompatible change: --disable-debugger toplevel option now takes
57 effect before processing of initialization files and --eval or --load
59 * new feature: new commandline argument: --script, which supports
60 shebang lines. See documentation for details. (based on work by
62 * new feature: SAVE-LISP-AND-DIE can save current values of
63 --dynamic-space-size and --control-stack-size in the executable core,
64 causing it to skip normal runtime option processing. See documentation
65 for details. (thanks to Zach Beane)
66 * enhancement: inoccous calls to EVAL or generic functions dispatching
67 on subclasses of eg. STREAM no longer cause compiler notes to appear.
68 * enhancement: the system no longer resignals errors from --load and
69 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
70 associated with the original error to be lost. (thanks to Ariel
72 * enhancement: :DONT-SAVE keyword argument has been added to
73 LOAD-SHARED-OBJECT for controlling interaction with
74 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
75 the effects of an earlier LOAD-SHARED-OBJECT call.
76 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
77 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
78 provided. (reported by Cedric St-Jean)
79 * bug fix: circularity handling in the reader did not treat raw
80 structure slots correctly. (reported by Cedric St-Jean)
81 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
82 file descriptors when there were none.
83 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
84 was broken. (reporteed by Willem Broekema)
85 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
86 pathnames without a directory.
87 * bug fix: COMPILE-FILE did not warn about undefined variable
88 references at toplevel, and LOAD of the resulting fasl did
90 * bug fix: functions with non-required arguments used to end up with
91 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
92 * bug fix: redefining a function with non-required arguments didn't
93 update the system's knowledge about its call signature properly.
94 * bug fix: fixed #431; incompatible alien record type redefinitions
95 are detected and handled. (reported by Neil Haven)
96 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
97 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
99 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
100 after alien stack frames.
101 * bug fix: strings passed to mk{s,d}temp lacked null termination
103 changes in sbcl-1.0.21 relative to 1.0.20:
104 * new feature: the compiler is able to track the effective type of a
105 generic function across method addition and removal.
106 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
107 appropriately typed structure slots without locking.
108 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
109 information like those gathered by TIME using a programming-friendly
111 * new feature: TIME reports time taken even if the form performs a
112 non-local transfer of control.
113 * enhancement: reduced conservativism on GENCGC platforms: on
114 average 45% less pages pinned (measured from SBCL self build).
115 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
116 mutate constant symbols or violate declaimed type of the symbol.
117 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
118 sleeping on the semaphore in heavily contested semaphores.
119 * bug fix: semaphores and condition variables were not interrupt
121 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
122 owned by other threads anymore.
123 * bug fix: FIND on lists called KEY outside the specified
124 subsequence. (reported by budden)
125 * bug fix: LOG doesn't use single-float intermediate results when
126 given mixed integer and double-float arguments, leading to better
127 precision. (reported by Bob Felts)
128 * bug fix: LOG with base zero returned values of inconsistent type.
130 changes in sbcl-1.0.20 relative to 1.0.19:
131 * minor incompatible change: OPTIMIZE qualities
132 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
133 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
134 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
135 * documentation: some slot access efficiency guidelines have been
136 added to the user manual.
137 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
138 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
139 as ASSOC and MEMEBER.
140 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
141 to more efficient EQ-comparison versions more often.
142 * optimization: enhanced derivation of DOLIST iteration variable type
144 * optimization: constant folding of simple (LIST ...) forms as DOLIST
146 * optimization: runtime lookup of function definitions can be
147 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
148 * optimization: compiler is able to derive the return type of
149 (AREF (THE STRING X) Y) as being CHARACTER.
150 * optimization: CLRHASH on empty hash-tables no longer does pointless
151 work. (thanks to Alec Berryman)
152 * optimization: REPLACE deftransforms don't punt when :START1 or
154 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
155 no longer emits a code deletion note. (reported by Andrew
157 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
158 functions with an odd number of &OPTIONAL arguments, a &REST
159 argument, and one or more &KEY arguments at the call site.
160 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
161 arguments appeared at call sites as well.
162 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
163 READ-LINE &co can no longer read from them afterwards. (reported
165 * bug fix: fixed #427: unused local aliens no longer cause compiler
166 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
168 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
169 alien-stack leakage. (reported by Andy Hefner)
170 * bug fix: PROGV signals an error when an attempt to violate declared
171 type of a variable or bind a constant is made.
172 * bug fix: SET signals an error when an attempt to violate declared
173 type of a variable is made.
174 * bug fix: restart computation during the execution of a restart
175 test function no longer causes infinite recursion. (reported by
177 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
178 signals an error. (thanks to Pierre Mai)
179 * bug fix: EXPORT left symbol unexported in conflict situations.
180 (thanks to Michael Weber)
181 * bug fix: correctly handle name conflicts involving CL:NIL.
182 (thanks to Michael Weber)
183 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
184 conflicts arising from USEing package with conflicting symbols
185 correctly. (thanks to Michael Weber)
187 changes in sbcl-1.0.19 relative to 1.0.18:
188 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
189 warnings that go otherwise unhandled will be muffled if they are
190 of the type that's the value of this variable.
191 * optimization: stack allocation is slightly more efficient on x86
193 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
194 where a raw slot always is initialized using the initform whose
195 type is not know sufficiently well a compile-time are now compiled
196 correctly. (reported by John Morrison)
197 * bug fix: compiler no longer makes erronous assumptions in the
198 presense of non-foldable SATISFIES types.
199 * bug fix: stack analysis missed cleanups of dynamic-extent
200 arguments in non-let-converted calls to local functions.
201 * improvements to the Windows port:
202 ** adjusted address spaces for building on both Win32 and
203 Win64. (thanks for John Connors)
204 * fixed some bugs revealed by Paul Dietz' test suite:
205 ** interval arithmetic during type derivation used inexact integer
206 to single-float coercions.
207 ** arithmetic operations involving large integers and single
208 floats give the same results in compiled and interpreted code.
209 ** deriving the result type of COERCE no longer signals an error
210 if the derived type of the second argument is a MEMBER type
211 containing invalid type specifiers.
212 ** ADJOIN with constant NIL as second argument works correctly.
213 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
215 changes in sbcl-1.0.18 relative to 1.0.17:
216 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
217 profiles only the current thread.
218 * minor incompatible change: changes to SYMBOL-VALUE of constants
219 defined with DEFCONSTANT now signal an error.
220 * enhancement: SB-SPROF now has support for wallclock profiling,
221 and is also able to profile specific threads. REPORT output
222 has also additional sorting options.
223 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
225 * optimization: structure allocation has been improved
226 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
227 ** out of line constructors are ~10% faster.
228 ** inline constructors are ~15% faster.
229 ** inline constructors are capable of dynamic extent allocation
230 (generally on x86 and x86-64, in some cases on other platforms
232 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
234 * optimization: file compiler is now able to coalesce non-circular
235 lists, non-base strings, and bit-vectors. Additionally, constants
236 are never referenced through SYMBOL-VALUE at runtime.
237 * optimization: code defining methods on PRINT-OBJECT (and other
238 generic functions in the COMMON-LISP package) now loads faster.
239 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
241 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
242 fasl is now deleted. (reported by Attila Lendvai)
243 * bug fix: READ-LINE always returned NIL for the last line in files.
244 (reported by Yoshinori Tahara)
245 * bug fix: more accurate disassembly annotations of foreign function
246 calls. (thanks to Andy Hefner)
247 * bug fix: trimming non-simple strings and non-string string
248 designators when the there is nothing to trim works properly.
249 (thanks to James Knight)
250 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
251 (thanks to Travis Cross)
252 * fixed some bugs revealed by Paul Dietz' test suite:
253 ** NIL is a valid function name (regression at 1.0.13.38)
254 ** FILL on lists was missing its return value (regression at 1.0.12.27)
255 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
256 fill pointers properly (regression at 1.0.12.23)
257 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
258 displacement indices properly (regression at 1.0.12.23)
260 changes in sbcl-1.0.17 relative to 1.0.16:
261 * temporary regression: user code can no longer allocate closure
262 variable storage on stack, due to bug 419 without explicitly
263 requesting it. Please consult sbcl-devel for advice if you need to
264 use this feature in the meanwhile.
265 * new feature: runtime argument --control-stack-size can be used to
266 adjust thread default control stack size.
267 * enhancement: improved TIME output
268 ** all times are reported using the measured accuracy (milliseconds
269 for real and GC times, microseconds for everything else.)
270 ** processor cycle counts on x86 and x86-64.
271 ** interpreted forms are counted for both evaluator modes.
272 ** number of lambdas converted by the compiler is reported.
273 ** CPU percentage report (computed from real and total run time.)
274 ** more comprehensive run time reporting, using a condenced format
275 ** interperted form, lambda, and page fault counts are omitted
277 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
279 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
280 * optimization: two argument forms of LAST are upto ~10% faster
281 in normal SPEED policies.
282 * optimization: NCONC no longer needs to heap cons its &REST list
283 in normal SPEED policies.
284 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
286 * bug fix: UNION and NUNION work with :TEST-NOT once more,
287 regression since 1.0.9.1. (thanks to Eric Marsden)
288 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
289 since 1.0.15.36. (thanks to Paul Khuong)
290 * bug fix: LAST when always returned the whole list when given a bignum
291 as the second argument.
292 * bug fix: dynamic extent allocation of nested lists and vectors
293 could leak to otherwise accessible parts.
294 * bug fix: invalid optimization of heap-allocated alien variable
296 * bug fix: fasl header checking is less vulnerable to different
297 platform word lengths.
298 * bug fix: more correct assembler syntax for GNU binutils
299 2.18.50.0.4 support. (thanks to Marijn Schouten)
300 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
302 * bug fix: the fopcompiler can handle LOCALLY forms (with no
303 declarations) successfully. (reported by Attila Lendvai)
305 changes in sbcl-1.0.16 relative to 1.0.15:
306 * minor incompatible change: revert the changes to sb-posix's error
307 signaling added in 1.0.14.
308 * minor incompatible change: change PROBE-FILE back to returning
309 NIL whenever we can't get a truename, as was the case before 1.0.14.
310 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
311 inherits from ERROR instead of just CONDITION.
312 * new feature: SB-INTROSPECT can provide source locations for instances
313 as well. (thanks to Tobias Rittweiler)
314 * optimization: binding special variables now generates smaller code
315 on threaded platforms.
316 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
317 and cases where no :TEST is given but the compiler can infer that
318 the element to search is of type (OR FIXNUM (NOT NUMBER)).
319 * optimization: better LOGNOT on fixnums.
320 * optimization: modular arithmetic for a particular requested width
321 is implemented using a tagged representation unless a better
322 representation is available.
323 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
324 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
325 for wellformedness and returns a specialized vector. (reported by
326 Francois-Rene Rideau)
327 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
328 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
329 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
330 unscheduling timer at the same time as another timer fires.
331 * bug fix: don't reschedule timers for dead threads.
332 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
333 * bug fix: copying output from RUN-PROGRAM to a stream signalled
334 bogus errors if select() was interrupted.
335 * enhancement: add support for fcntl's struct flock to SB-POSIX.
337 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
338 * enhancement: cleaner backtraces for interactive interrupts, as
339 well as other cases where the interesting frames used to be
340 obscured by interrupt handling frames.
341 * enhancement: untracing a whole package using (UNTRACE "FOO") is
342 now supported, and tracing a whole package using (TRACE "FOO") now
343 traces SETF-functions as well.
344 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
345 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
346 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
347 * unreadably printed representation of hash-tables now includes
349 * bug fix: partially fixed #188: type propagation from assignments
350 is now more efficient.
351 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
352 'DOUBLE-FLOAT) are not flushable.
353 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
354 full address of the object, and none of the tag bits.
355 * bug fix: readably printing hash-tables now respects other printer
356 control variables. (reported by Cedric St-Jean)
357 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
358 keyword with MAKE-HASH-TABLE.
359 * bug fix: export SB-POSIX:MKSTEMP.
360 * bug fix: SORT was not interrupt safe.
361 * bug fix: XREF accounts for the last node of each basic-block as
363 * bug fix: MAKE-INSTANCE optimizations interacted badly with
364 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
365 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
366 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
367 create obsolete instances in the case of redefinition or
368 obsoletion of a superclass. (thanks to Andy Hefner)
369 * bug fix: Support for the Alpha architecture has been revived; it had
370 suffered somewhat from lack of maintenance since sbcl-1.0.
371 * improvements to the Windows port:
372 ** The system detects the codepage to use at startup, instead of
373 using the value from the saved core. (thanks to Kei Suzuki)
375 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
376 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
377 (see documentation for details.)
378 * revived support for OpenBSD (contributed by Josh Elsasser)
379 * partially fixed bug #108: ROOM no longer suffers from occasional
380 (AVER (SAP= CURRENT END)) failures.
381 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
382 bodies no longer cause a WARNING to be signalled. (reported by
384 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
385 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
386 the bug in TRUNCATE.) (reported by Michael Weber)
387 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
388 no samples. (reported by Andy Hefner)
389 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
390 no longer appear as (NIL ...) frames in backtraces.
391 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
392 is now actually exported from SB-EXT as documented. (reported by
394 * bug fix: sb-aclrepl now correctly understands how to inspect
395 single-floats on 64-bit platforms where single-floats are not boxed.
396 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
397 yet been finalized. (reported by Levente Meszaros)
398 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
399 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
400 SBCL-specific optimize qualities.
402 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
403 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
404 an executable in the search path, and does so in the child
405 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
406 been removed; it can be found in the CVS history, for somebody who
407 needs that search behavior (see the manual).
408 * minor incompatible change: compiler policy re. weakening type
409 checks has changed: now type checks are weakened only if SAFETY < 2
411 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
412 unparsing of directory pathnames as files. Analogously,
413 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
414 filename to parse into a directory pathname.
415 * enhancement: implicit generic function creation now signals a
416 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
417 users can bind handlers for and muffle around calls to LOAD.
418 * enhancement: RUN-PROGRAM allows unicode arguments and environments
419 to be used (using the default stream external format), and allows
420 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
421 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
422 strings and vectors whose element-type or simplicity is not fully
423 known at compile-time.
424 * optimization: STRING-TRIM and related functions no longer allocate
425 a new string when no trimming needs to be performed. These functions
426 are also faster than before when the input string has been declared
428 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
429 * optimization: READ-LINE is significantly faster for files containing
431 * optimization: non-open coded uses of character comparison operators
432 (e.g. char=) no longer cons when called with more than one parameter
433 on platforms supporting dynamic-extent allocation.
434 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
435 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
436 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
438 * bug fix: some sequence functions elided bounds checking when
440 * bug fix: too liberal weakening of union-type checks when SPEED >
442 * bug fix: more bogus fixnum declarations in ROOM implementation
445 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
446 * new feature: MAKE-HASH-TABLE now experimentally accepts a
447 :SYNCHRONIZED argument, which makes the hash-table safe for
448 concurrent accesses (but not iteration.) See also:
449 SB-EXT:WITH-LOCKED-HASH-TABLE, and
450 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
451 * optimization: CONCATENATE on strings is an order of magnitude faster
452 in code compiled with (> SPEED SPACE).
453 * optimization: SUBSEQ is ~50% faster on lists.
454 * bug fix: bug 417 fixed -- source location reporting is now more robust.
455 * bug fix: SUBSEQ on a list will now correctly signal an error if if
456 END is smaller then START.
457 * bug fix: SB-PROFILE will no longer report extra consing for nested
458 calls to profiled functions.
459 * bug fix: ROOM implementation had bogus fixnum declarations which
460 could cause type-errors when calling ROOM on large images.
461 * bug fix: if file compilation is aborted, the partial fasl is now
462 deleted, and COMPILE-FILE returns NIL as the primary value.
463 * bug fix: number of thread safety issues relating to SBCL's internal
464 hash-table usage have been fixed.
465 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
466 be returned from its body when the values were being returned
467 using unknown-values return convection and the W-P-O was wrapped
468 inside an UNWIND-PROTECT.
469 * bug fix: sb-posix should now compile again under Windows, enabling
472 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
473 * incompatible change: hash-table accessor functions are no longer
474 automatically protected by locks. Concurrent accesses on the same hash-table
475 from multiple threads can give inconsistent results or even corrupt the
476 hash-table completely. Multi-threaded applications should do their own
477 locking at the correct granularity. In the current implementation it is
478 still safe to have multiple readers access the same table, but it's not
479 guaranteed that this property will be maintained in future releases.
480 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
481 and will signal an error at runtime.
482 * enhancement: SB-THREAD package now exports a semaphore interface.
483 * enhancement: CONS can now stack-allocate on x86 and
484 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
486 * enhancement: nested lists can now be stack allocated on
487 platforms providing stack allocation support.
488 * enhancement: dynamic-extent support has been extended to support
489 cases where there are multiple possible sources for the stack
491 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
492 if the mutex is uncontested on Linux.
493 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
494 as specified by the CLHS. (thanks to Tobias Rittweiler)
495 * bug fix: NaN comparison now works on x86-64.
496 * bug fix: CLOSE :ABORT T on a stream with pending output now
498 * bug fix: instances of non-standard metaclasses using standard
499 instance structure protocol sometimes missed the slot type checks
501 * bug fix: known functions can be inlined in high-debug code.
503 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
504 * minor incompatible change: the MSI installer on Windows no longer
505 associates .lisp and .fasl files with the installed SBCL.
506 * minor incompatible change: :UNIX is no longer present in *FEATURES*
507 on Windows. (thanks to Luis Oliviera)
508 * new feature: SB-CLTL2 contrib module now implements
509 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
510 * optimization: scavenging weak pointers is now more efficient,
511 requiring O(1) instead of O(N) per weak pointer to identify
512 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
513 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
514 method bodies using constant slot-names when the first argument is
515 a specializer parameter for the method.
516 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
517 names, when the class of the instance is a direct instance
518 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
519 as slow as the constant slot-name case.)
520 * optimization: member type construction is now O(N) instead
522 * optimization: UNION and NUNION are now O(N+M) for large
523 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
525 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
526 now more readable in environments like Slime which display it.
527 (thanks to Tobias C. Rittweiler)
528 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
529 was able to infer the correct argument type for the object on which
530 the CAS operation was being performed.
531 * bug fix: copy propagation interfered with parallel assignment
532 semantics in local calls. (reported by Paul Khuong)
533 * bug fix: the signed modular fixnum shift compiled to wrong code on
534 x86 and x86-64. (spotted by a slight modification to some of
537 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
538 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
539 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
540 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
542 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
543 and generic function now print the object identity for anonymous
544 instances. (thanks to Attila Lendvai)
545 * enhancement: as an extension to MOP, SBCL now supports SETF of
546 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
547 (thanks to Attila Lendvai)
548 * enhancement: sb-cover has an alternate annotation mode which puts
549 the form annotations at the car of the form, instead of annotating
550 it completely. The benefit of this mode is that it shows better
551 which forms were instrumented by the compiler.
552 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
553 by printer control variables. (reported by Dan Corkill)
554 * bug fix: system leaked memory when delayed output was performed by
555 the OS in smaller chunks then expected. (thanks to David Smith)
556 * bug fix: system leaked memory when file streams were not closed
558 * bug fix: large objects written to slow streams that were modified
559 after the write could end up with the modified state written to
560 the underlying file descriptor.
561 * bug fix: multiple threads operating in parallel on the same stream
562 could cause buffer-overflows.
563 * bug fix: source location information is stored correctly
564 (broken since 1.0.6). This bug would generally show up as the
565 Slime debugger highlighting the wrong form when the sldb-show-source
567 * bug fix: Branch forms are again annotated as branches in the sb-cover
569 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
570 on x86-64. (reported by Gregory Vanuxem)
571 * bug fix: EQUALP could return wrong results for structures with raw
572 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
573 word). (reported by Vjacheslav Fyodorov)
574 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
577 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
578 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
579 atomic compare-and-swap operations on threaded platforms.
580 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
581 allows assigning a global minimum value to optimization qualities
582 (overriding proclamations and declarations).
583 * enhancement: closed over variables can be stack-allocated on x86
585 * performance bug fix: GETHASH and (SETF GETHASH) are once again
587 * optimization: slot definition lookup is now O(1). This speeds up
588 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
589 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
590 * optimization: ASSOC and MEMBER can now be open-coded for all
591 combinations of keyword arguments when second argument is constant
592 and SPEED >= SPACE. In other cases a specialized version is
594 * bug fix: using obsoleted structure instances with TYPEP and
595 generic functions now signals a sensible error.
596 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
597 (reported by Kristoffer Kvello)
598 * bug fix: backtrace construction is now more careful when making
599 lisp-objects from pointers on the stack, to avoid creating bogus
600 objects that can be seen by the GC.
601 * bug fix: defaulting of values in contexts expecting more than 7
602 variables now works on x86-64. (reported by Christopher Laux)
603 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
605 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
606 as the property-list of a symbol.
607 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
608 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
609 situations requested, are once again file-compileable. (reported
612 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
613 * MOP improvement: support for user-defined subclasses of
614 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
615 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
616 the expansion of DEFMETHOD, is responsible for generating a form
617 which creates a list of specializers when evaluated. Additional
618 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
619 debugging and introspective support.
620 * minor incompatible change: the (unsupported) spinlock interface
621 has changed: free spinlock now has the value NIL, and a held spinlock
622 has the owning thread as its value.
623 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
624 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
626 * enhancement: name of a socket-stream is now "a socket" instead of
628 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
629 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
630 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
631 for generic functions. (Thanks to Tobias C. Rittweiler)
632 * optimization: bignum printing speed has been improved by 20-40%
633 (depending on the bignum size.)
634 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
636 * bug fix: the cache used by the CLOS to store precomputed effective
637 methods, slot offsets, and constant return values is now thread and
639 * bug fix: generic function dispatch function updating is now thread
640 and interrupt safe (in the sense that the known issues have been
642 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
643 * bug fix: interning EQL-specializers is now thread and interrupt safe.
644 * bug fix: asdf systems with dependencies to the SB-POSIX or
645 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
646 * bug fix: interrupt safety of applicable method computation has been
649 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
650 * new contrib: sb-cover, an experimental code coverage tool, is included
652 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
653 significantly faster.
654 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
655 produce more efficient code on x86-64 if the compiler can determine
656 that (+ INDEX <constant>) does not require a bounds check and FOO
657 has an element type at least 8 bits wide.
658 * enhancement: a new, experimental synchronous timeout facility is
659 provided. Refer to SB-SYS:WITH-DEADLINE for details.
660 * enhancement: when a symbol name conflict error arises, the
661 conflicting symbols are always printed with a package prefix.
662 (thanks to Kevin Reid)
663 * enhancement: stepping is now once again supported on the SPARC and
664 MIPS platforms. (It is also now more likely to work on CheneyGC
666 * enhancement: sb-sprof can now also track and report accurate call
668 * bug fixes: the treatment of non-standard subclasses of
669 SB-MOP:SPECIALIZER is more correct.
670 * incompatible change: PURIFY no longer copies the data from the
671 dynamic space into the static and read-only spaces on platforms
672 that use the generational garbage collector
673 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
675 * bug fix: GC race condition occasionally resulting in crashes with
676 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
678 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
680 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
681 a STYLE-WARNING to be signalled (regression from 1.0.4.)
682 * bug fix: an asynchronous interrupt could previously leave the
683 system running with GC inhibited.
684 * bug fix: a DECLARE form evaluated at top-level now causes an error
685 rather than silently (or verbosely) returning NIL.
686 * bug fix: trying to dissassemble functions compiled at high DEBUG could
687 result in a error being signalled due to source form lookup errors.
688 (reported by Peter Graves)
690 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
691 * incompatible change: removed writer methods for host-ent-name,
692 host-ent-addresses -- changing the values did not update the DNS
694 * minor incompatible change: changed experimental JOIN-THREAD interface
695 * documentation: the manual now lists reader and writer methods
696 in class slot documentation sections. (thanks to Richard M Kreuter)
697 * documentation: unwinding from asyncronous events has been
698 documented as unsafe.
699 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
700 in multithreaded application code.
701 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
702 platforms. (thanks to James Anderson for the optimization hint)
703 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
705 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
706 variants no longer cons.
707 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
708 their NOT- variants no longer cons.
709 * optimization: EQUAL hash tables no longer use SXHASH for objects
710 of all data types, but instead use an EQL hash for types for which
711 EQUAL is the same as EQL.
712 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
713 are significantly faster.
714 * optimization: new STRING-OUTPUT-STREAM implementation is much
715 faster for large outputs and conses 30% less on average.
716 * enhancement: XREF information is now collected for references made
717 to global variables using SYMBOL-VALUE and a constant argument.
718 * enhancement: SIGINT now causes a specific condition
719 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
720 * bug fix: FILE-POSITION used to signal an error in some cases where
721 ANSI requires it to return NIL.
722 * bug fix: ADJUST-ARRAY is now interrupt-safe.
723 * bug fix: adding and removing fd-handlers is now interrupt-safe.
724 * bug fix: inlined calls to C now ensure 16byte stack alignment on
726 * bug fix: bad type declaration in the CLOS implementation has
727 been fixed. (reported by James Anderson)
728 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
729 (thanks to Lutz Euler)
730 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
731 required by the CLHS. (reported by Samium Gromoff)
732 * bug fix: dead unbound variable references now signal an error.
733 (reported by Marco Monteiro)
734 * bug fix: / with an unused value was being deleted in safe code.
735 (thanks to Marco Monteiro and Kevin Reid)
736 * bug fix: number of characters that can be written onto a single
737 line in a file is unlimited.
738 * bug fix: some GC deadlocks caused by asynchronous interrupts have
739 been fixed by inhibiting interrupts for when GC is disabled.
740 * bug fix: some interrupt safety issues with GETHASH, (SETF
741 GETHASH), CLRHASH and REMHASH have been fixed.
742 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
743 specifier no longer causes infinite recursion.
744 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
745 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
746 * bug fix: an &environment argument with the correct variable information
747 is passed to macros that are expanded during byte compilation.
748 (reported by Samium Gromoff)
749 * bug fix: a logic error was causing the hash function for bignums to
750 have excessive amounts of collisions. (reported by Faré Rideau)
751 * bug fix: modifying the contents of an array could change the return
752 value of SXHASH on that array, which is only allowed for strings
753 and bit vectors. (bug introduced in 0.9.16)
754 * improvement: the x86-64/darwin port now passes all tests (except
755 for the debugger tests) but should still be considered
756 experimental until this is fixed.
757 * improvement: a style-warning is signaled for CASE (etc) clauses with
758 duplicate keys. (thanks to Kevin Reid)
759 * improvement: macos/x86 and macos/x86-64 now use mach exception
760 handlers for dealing with illegal instructions (for trapping and
761 error handling) and memory protection violations (for GC).
763 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
764 * new platform: experimental support for x86-64/darwin (MacOS).
765 * incompatible change: the thread-safe (on most platforms) getaddrinfo
766 and getnameinfo sockets functions are used instead of gethostbyaddr
767 and gethostbyname, on platforms where the newer functions are available.
768 As a result, the ALIASES field of HOST-ENT will always be NIL on these
770 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
771 don't print the startup banner, but behave as if --noinform was passed
772 as a command line argument. (thanks to Kevin Reid)
773 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
774 * optimization: code using alien values with undeclared types is much faster.
775 * optimization: the compiler is now able to open code SEARCH in more cases.
776 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
777 * bug fix: using standardized COMMON-LISP special variables as loop
778 variables no longer signals bogus package lock violations. (reported
780 * bug fix: declaring local loop variables to be of a range-limited type
781 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
782 (reported by Andras Simon)
783 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
784 bugs remain on x86-64.)
785 * bug fix: the #= and ## reader macros now interact reasonably with
786 funcallable instances.
787 * bug fix: type-checks for function arguments were compiled using the
788 compiler policy settings of the wrong lexical environment (in 1.0.2
790 * bug fix: SHADOW accepts characters as string designators, as required
791 by the spec (thanks to Eric Marsden)
792 * bug fix: fixed GC safety issues when foreign functions are called with
793 non-base strings as arguments
794 * bug fix: more consistent error output for fatal-compiler-warnings, like
796 * bug fix: functions with proper names were showing up as NIL in
797 backtraces (reported by Edi Weitz, regression in 1.0.2)
799 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
800 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
801 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
802 produce more efficient code on the x86 if the compiler can determine
803 that (+ INDEX <constant>) does not require a bounds check and FOO
804 has an element type at least 8 bits wide.
805 * bug fix: references to undefined variables are handled the same way
806 in toplevel forms as in the normal compiler
807 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
809 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
810 (thanks to Jon Buller)
811 * improvement: faster compilation times for complex functions
812 * improvement: added readlink support to SB-POSIX (thanks to Richard
815 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
816 * improvement: experimental support for mach exception handling on
817 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
819 * improvement: support for GBK external format.
820 (thanks to Chun Tian (binghe))
821 * improvement: the debugger now displays variables that have been closed
822 over, in code compiled with (DEBUG 2) or higher
823 * improvement: support for executable cores on NetBSD (thanks to
825 * new feature: added a RESTART-FRAME debugger command
826 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
827 be used to provide an implementation for FILE-POSITION on Gray streams
828 (thanks to Eric Marsden)
829 * new feature: add syslog, openlog and closelog support to SB-POSIX
830 (thanks to Richard Kreuter)
831 * optimization: the function call overhead in code compiled with
832 a high DEBUG optimization setting is significantly
833 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
834 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
835 (thanks to Tony Martinez)
836 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
837 evaluated once (reported by Kevin Reid)
838 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
839 works again (thanks to Kilian Sprotte)
840 * bug fix: an error is signaled for tagbodies with duplicate tags
841 (thanks to Stephen Wilson)
842 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
843 * bug fix: Win32 port can now handle foreign code unwinding Lisp
844 stack frames from alien callbacks.
845 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
846 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
847 65k pages (thanks to David Woodhouse)
848 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
850 changes in sbcl-1.0.1 relative to sbcl-1.0:
851 * new platform: FreeBSD/x86-64, including support for threading.
852 * new feature: the compiler stores cross-referencing information
853 about function calls (who-calls), macroexpansion (who-macroexpands)
854 and special variables (who-binds, who-sets, who-references) for code
855 compiled with (< SPACE 3). This information is available through the
856 sb-introspect contrib.
857 * new feature: users may subclass SEQUENCE, and have instances of
858 these classes interoperate with standard Common Lisp functions if
859 a number of methods are defined. (This feature is experimental
860 and the interface subject to change based on feedback from SBCL
861 users and the general community)
862 * improvement: sb-sprof traces call stacks to an arbitrary depth on
863 x86/x86-64, rather than the previous fixed depth of 8
864 * improvement: another pthread back-end of mutex "pthread-futex".
865 * bug fix: non-ascii command-line arguments are processed correctly
866 (thanks to Yaroslav Kavenchuk)
867 * bug fix: non-required arguments were not passed correctly when a method
868 defined using DEFMETHOD was called from a mop-generated method using
869 CALL-NEXT-METHOD (reported by Pascal Costanza)
870 * bug fix: recursion is now permitted in accessors through
871 SLOT-UNBOUND. (reported by Pascal Costanza)
872 * bug fix: an error was signaled at startup if the HOME environment
873 variable was defined, but had an empty value (reported by Peter Van Eynde)
874 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
875 signal a PROGRAM-ERROR, not a BUG.
876 * bug fix: SB-POSIX:READDIR works when built with large file support.
877 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
879 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
880 for better automatic indentation support. (thanks to Matt Pillsbury)
881 * optimization: loading generic functions no longer takes O(n^2) time,
882 proportional to the amount of methods in the generic function
883 (reported by Todd Sabin and Jeremy Brown)
884 * optimization: the FIND and POSITION family of sequence functions
885 are significantly faster on arrays whose element types have been
887 * improvements to the Windows port:
888 ** Intermittent heap corruption problems have been fixed. (thanks
889 to Alastair Bridgewater)
890 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
892 ** Lisp is able to unwind foreign exception frames from alien
893 callbacks. (thanks to Alastair Bridgewater)
895 changes in sbcl-1.0 relative to sbcl-0.9.18:
896 * improvement: experimental support for threading on FreeBSD/x86.
897 (thanks to NIIMI Satoshi)
898 * improvement: runtime option --dynamic-space-size can be used
899 to set the size of the dynamic space reserved on startup.
900 * improvement: floating point modes in effect are now saved in
901 core, and restored on startup.
902 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
903 startup, not time since first call to GET-INTERNAL-REAL-TIME.
904 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
905 threads are not running after *SAVE-HOOKS* have run.
906 * improvement: writes to CLOS instance slots are type-checked in code
907 compiled with (SAFETY 3)
908 * improvement: floating-point exception handling on FreeBSD (thanks to
910 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
911 (thanks to Zach Beane)
912 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
914 * improvement: added support for the Shift-JIS external format.
915 (contributed by NIIMI Satoshi)
916 * improvement: callbacks are supported on Linux/PPC. (thanks to
918 * bug fix: compiler bug triggered by a (non-standard) VALUES
919 declaration in a LET* was fixed. (reported by Kaersten Poeck)
920 * bug fix: file compiler no longer confuses validated and already
921 dumped structurres. (reported by Kaersten Poeck)
922 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
923 fill-pointer signals a type-error as required. (thanks to
925 * bug fix: disassemly of funcallable instances works.
926 * bug fix: single stepping on PPC.
927 * bug fix: fix thread-safety problems in the type system (generally
928 manifesting as nonsensical errors like "STRING is a bad type specifier
929 for sequences" or "The value 1 is not of type FIXNUM")
930 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
931 (reported by Josip Gracin)
932 * bug fix: an error is signaled for attempts to displace arrays with
933 incompatible element types (thanks to Mario Mommer)
934 * bug fix: more correct handling of wide characters in debug info
935 (bug reported by Attila Lendvai and fixed by Juho Snellman)
936 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
937 and don't cause extra consing
938 * optimization: MAP and MAP-INTO are significantly faster on vectors
939 whose elements types have been declared.
940 * Improvements to SB-SPROF:
941 ** Support for allocation profiling
942 ** Reduced profiling overhead, especially for long profiling runs
943 * Improvements to the Windows port:
944 ** floating point exceptions are now reported correctly.
945 ** stack exhaustion detection works partially.
946 ** more accurate GET-INTERNAL-REAL-TIME.
947 ** better RUN-PROGRAM behaviour in case of errors in the child
949 ** PROBE-FILE now simplifies pathnames correctly.
950 ** DIRECTORY now works correctly with :WILD-INFERIORS.
951 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
952 1st 1970 (although time timezone data will be unreliable).
953 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
955 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
956 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
957 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
959 * bug fix: two potential GC deadlocks affecting threaded builds.
960 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
961 returns T (reported by Anton Kazennikov)
962 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
963 with non-variable places
964 * bug fix: remove a race condition in the setting of
965 funcallable-instance functions, this should make threaded CLOS
966 code more stable against memory faults.
967 * bug fix: corruption of specials when unbinding is interrupted by an
968 asynchronous unwind (reported by Hannu Koivisto)
969 * improvement: the debugger will now also display local variables that
970 are only used once, for code compiled with a DEBUG optimization quality
973 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
974 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
975 * incompatible change: External-format support for FFI calls. The
976 SB-ALIEN:C-STRING no longer implies an ASCII
977 external-format. Instead the string is subject to external-format
978 conversion. Additionally return values of type SB-ALIEN:C-STRING
979 are by default of type (SIMPLE-ARRAY CHARACTER), not
980 SIMPLE-BASE-STRING. For an alien type that behaves like the old
981 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
982 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
983 * incompatible change: SB-EXT package no longer contains the
984 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
985 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
987 * incompatible change: the single-stepper is no longer available
988 on Alpha, Mips and Sparc platforms.
989 * minor incompatible change: the direct superclasses of
990 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
991 not (STANDARD-OBJECT FUNCTION). This makes the
992 class-precedence-lists of GENERIC-FUNCTION and
993 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
995 * minor incompatible change: the default stream external format on
996 non-unicode SBCL is no longer detected from the locale, but is always
998 * new feature: Add a version of evaluator that uses an interpreter instead
999 of the compiler. EVAL still uses the compiler by default, to switch it
1000 to use the interpreter, set the value of the variable
1001 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1002 * minor incompatible change: the single-stepper REPL has been merged
1003 with the normal debugger (see the "Stepping" heading of the debugger help
1004 for more details). The debugger command STEP will no longer switch
1005 to the single-stepper REPL.
1006 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1007 for a type now works.
1008 * bug fix: loading of default sysinit file works. (thanks to Leonid
1010 * bug fix: better detection of circularities in the file-compiler.
1011 (reported by Marco Monteiro)
1012 * bug fix: the CL pathname functions now work with files that have
1013 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1014 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1015 systems with Unix98 pty semantics.
1016 * bug fix: ASDF-INSTALL will now work with bsd tar.
1017 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1019 * bug fix: timers expiring in dead threads no longer cause a
1020 type-error (reported by Paul "Nonny Mouse").
1021 * bug fix: thanks to more lightweight single-stepper instrumentation,
1022 code compiled with (DEBUG 3) will compile and execute significantly faster,
1023 and will have more accurate type-inferencing than before
1024 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1025 whose bindings are modified
1026 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1027 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1028 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1029 CL:SOFTWARE-VERSION with proper version
1031 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1032 * feature: implemented the READER-METHOD-CLASS and
1033 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1034 as specified by AMOP.
1035 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1037 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1038 (thanks to Lutz Euler)
1039 * optimization: hashing of general arrays and vectors has been
1040 improved. (reported by Any Fingerhut)
1041 * enhancement: SB-INTROSPECT is now able to find definitions of
1042 profiled functions. (thanks to Troels Henriksen)
1043 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1044 as well, allowing compiler-macros for SETF-functions to expand.
1045 * enhancement: step-instrumentation no longer wraps known
1046 single-value functions with multiple-value context, allowing
1047 better type inference.
1048 * fixed bug #337: use of MAKE-METHOD in method combination now works
1049 even in the presence of user-defined method classes. (reported by
1050 Bruno Haible and Pascal Costanza)
1051 * fixed bug #339(c): if there are applicable methods not part of any
1052 long-form method-combination group, call INVALID-METHOD-ERROR.
1053 (reported by Bruno Haible)
1054 * fixed bug #361: the :FUNCTION initarg in the protocol for
1055 initialization of methods can now be used to override
1056 internally-produced optimized functions. (reported by Bruno
1058 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1059 system-provided lambda expression no longer cause warnings about
1060 unbound #:|pv-table| symbols.
1061 * bug fix: improved the handling of type declarations and the
1062 detection of violations for keyword arguments with non-constant
1064 * bug fix: potentially erronous calls to PATHNAME and
1065 MERGE-PATHNAMES were being flushed in some cases.
1066 (reported by Richard Kreuter)
1067 * bug fix: compiled calls to TYPEP were mishandling obsolete
1068 instances. (reported by James Bielman and Attila Lendvai)
1069 * bug fix: format strings with ~> without matching ~< no longer
1070 trigger an AVER, but signal an understandable error instead.
1071 (reported by Antonio Martinez)
1072 * bug fix: specifying an output-file without a pathname-type for
1073 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1074 of input-file instead of "fasl". (reported by Robert Dodier)
1075 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1076 (reported by James Y Knight).
1077 * bug fix: compiler-macros-function did not consider the environment
1078 argument for shadowing by local functions.
1079 * bug fix: compiler-macros expansion was inhibited by local INLINE
1081 * bug fix: inline expansions of known functions were subject to
1082 step-instrumentation in high debug policies, leading to problems
1083 with type-inference.
1084 * bug fix: compiler failed to differentiate between different CONS
1085 types in some cases.
1086 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1087 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1088 * bug fix: #368: incorrect use of expressed vs. upgraded array
1090 * bug fix: #306a: more precise unions of array types.
1091 * thread-safety improvements:
1092 ** CONDITION-WAIT could return early on Linux, if the thread was
1093 interrupted and subsequently continued with SIGCONT.
1094 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1096 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1097 * added support for the ucs-2 external format. (contributed by Ivan
1099 * minor incompatible change: pretty printing of objects of type
1100 (cons symbol) is, in the default pprint-dispatch-table, now
1101 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1103 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1104 called later in a class's lifetime, possibly as late as when the
1105 first instance of the class is created. Previously,
1106 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1107 class became finalizeable.
1108 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1109 for multibyte external-format streams. (thanks to "vbzoli")
1110 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1111 with :ALLOCATION :CLASS inherited from superclasses of the
1113 * fixed bug: anonymous classes can now be created using the :NAME
1114 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1115 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1116 * fixed bug: core-files saved with :EXECUTABLE T can again be
1117 executed when SBCL_HOME isn't set. (reported by James Knight)
1118 * fixed bug: toplevel LOCALLY forms with declarations could
1119 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1120 * fixed bug: printing from several different threads using different
1121 values of *print-case* could cause invalid output, due to
1122 some internal special variables of the printer not being bound
1123 thread-locally (reported by Max Mikhanosha)
1124 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1125 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1126 (reported by Pascal Costanza)
1127 * fixed bug: FINALIZE-INHERITANCE is called from
1128 REINITIALIZE-INSTANCE on classes when the class has previously
1129 been finalized, as required by AMOP.
1130 * minor code generation optimizations:
1131 ** better register allocation in CLOS dispatching functions
1132 ** overflow detection when coercing signed bytes to fixnums on x86-64
1133 ** is now implemented with one IMUL instruction instead of three shifts
1134 ** more efficient bit-vector access on x86 and x86-64
1135 ** more efficient access to raw structure slots on x86 and x86-64
1136 * fixed some bugs revealed by Paul Dietz' test suite:
1137 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1138 return its argument.
1140 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1141 * feature: thread support on Solaris/x86, and experimental thread support
1143 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1145 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1146 default method for SLOT-UNBOUND.
1147 * minor incompatible change: prevent the user from specializing the
1148 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1149 somewhat counter to the intent of the protocol, I (CSR) think, and
1150 additionally it just doesn't work in SBCL as currently
1151 implemented, thanks to optimizations (that are always valid for
1152 the other three SLOT-VALUEish functions, but not for the setter).
1153 * minor incompatible change: the :SB-LDB feature is now enabled by
1154 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1155 the low-level debugger.
1156 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1157 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
1158 down to an SB-SYS:FD-STREAM, allowing direct communication in
1159 more cases. Temporary files and pipes are still used as a fallback
1161 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1162 on the non-reentrant C functions localtime(3) and gmtime(3).
1163 * bug fix: global optimization policy was not visible in LOCALLY and
1165 * bug fix: class objects can be used as specializers in methods.
1166 (reported by Pascal Costanza)
1167 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1168 with a type error. (reported by blitz_ on #lisp)
1169 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1170 failed with a type error. (reported by Pascal Bourguignon)
1171 * bug fix: merging pathnames against defaults with :DIRECTORY
1172 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1173 (reported by James Y Knight)
1174 * bug fix: saving large (>2GB) cores on x86-64 now works
1175 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1176 constant index and a (simple-array (signed-byte 32)) array
1177 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1178 error (patch by Robert J. Macomber)
1179 * feature: TIME now displays the amount of run-time spent in GC
1180 * bug fix: The debugger now does a better job of respecting
1181 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1182 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1183 workaround for bug 403.)
1184 * bug fix: floating point exception handling now works on FreeBSD
1185 (thanks to NIIMI Satoshi)
1186 * fixed some bugs revealed by Paul Dietz' test suite:
1187 ** MISC.641: LET-conversion were not supposed to work in late
1189 * improvements to the Win32/x86 port:
1190 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1191 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1193 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1194 * new feature: source path information is generated for macro-expansion
1195 errors for use in IDE's like Slime (thanks to Helmut Eller)
1196 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1197 * bug fix: compiler does not loop forever on an invalid type in
1199 * improvement: compilation of most CLOS applications is significantly
1201 * optimization: added a limited bytecode compiler for simple toplevel
1202 forms, speeding up compilation and FASL loading
1203 * bug fix: the statistical profiler now properly distinguishes anonymous
1206 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1207 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1208 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1209 into subclasses of the finalized class. Now user calls to
1210 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1211 system return before any subclasses are finalized.
1212 * minor incompatible change: The reader no longer ignores errors
1213 regarding non-existent packages in #+ and #- feature tests.
1214 * new feature: command line options --no-sysinit, --no-userinit to
1215 inhibit loading the corresponding init files
1216 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1217 for sending data through UDP sockets (thanks to François-René Rideau)
1218 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1219 error is signalled instead (thanks to François-René Rideau)
1220 * minor incompatible change: Error signalling behaviour of lexical
1221 operations violating package locks has changed slightly. Refer to
1222 documentation on package locks for details.
1223 * enhancement: EVAL can process IF-expressions without resorting to the
1225 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1226 constant-folded properly due to missing out-of-line functions.
1227 (reported by Mika Pihlajamäki)
1228 * bug fix: LISTEN sometimes returned T even in cases where no data was
1229 immediately available from the stream
1230 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1231 were reversed. (reported by Levente Mészáros)
1232 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1233 when given a vector displaced to an adjustable array. (reported
1235 * bug fix: derivation of float boundaries from numbers outside the
1236 appropriate float range (reported by John Wiseman)
1237 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1239 * bug fix: precomputing cache entries for generic functions with
1240 some subclasses of specializers as yet invalid does not attempt to
1241 fill a cache line with a negative offset. (reported by Levente
1243 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1244 allow condition class objects as arguments to DOCUMENTATION and
1245 (SETF DOCUMENTATION); only find and set documentation for
1246 structure names for the STRUCTURE doc-type. (suggested by Gary
1248 * improvements to the Win32/x86 port:
1249 ** (user-homedir-pathname) and default initialization file
1250 locations now know about the user's "Documents and Settings"
1251 directory (thanks to Yaroslav Kavenchuk)
1252 ** run-program is implemented (thanks to Mike Thomas)
1253 ** sockets support (thanks to Timothy Ritchey)
1254 ** better backtrace support (thanks to Alastair Bridgewater)
1255 ** sb-grovel supported
1256 ** asdf-install and sb-posix work somewhat
1257 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1258 * improvements to the Solaris/x86 port:
1259 ** works on Solaris 11/Solaris Express
1260 ** floating-point exception handling support
1261 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1262 * fixed some bugs revealed by Paul Dietz' test suite:
1263 ** REMOVE-METHOD returns its generic function argument even when
1264 the method is not one of the generic functions' methods.
1265 ** objects declared as MEMBER types can be admissible arguments to
1266 structure accessors.
1267 ** printing characters should simply be printed by the FORMAT ~:C
1269 ** compiler failure when compiling functions with hairy constant
1270 defaults for optional parameters.
1271 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1272 function, which is already optimized.
1274 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1275 * new platform: experimental support for SBCL x86/Darwin, including
1276 MacOS X 10.4.5 on Intel.
1277 * new feature: Unicode character names are now known to the system
1278 (through CHAR-NAME and NAME-CHAR).
1279 * new feature: the filesystem location of SBCL's core file is
1280 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1281 * minor incompatible change: the contrib modules SB-POSIX and
1282 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1283 this change is to make it easier to distribute
1284 location-independent binaries.
1285 * bug fix: as implied by AMOP, standardized classes no longer have
1286 slots named by external symbols of public packages. (reported by
1288 * optimization: calling functions via constant symbols -- as in
1289 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1290 via the function object as in (FUNCALL #'FOO).
1291 * optimization: on x86 and x86-64, the calling convention for the
1292 case of dealing with an unknown number of values has been altered
1293 to be friendlier to the prediction heuristics implemented,
1294 particularly with reference to CALL and RET pairing. (thanks to
1295 Alastair Bridgewater)
1296 * optimization: on x86, the code for access to thread-local symbol
1297 values and binding/unbinding of thread-local symbols is smaller.
1298 (thanks to Alastair Bridgewater)
1299 * enhancement: CONSTANTP is now able to determine constantness of
1300 more complex forms, including calls to constant-foldable standardized
1301 functions and some special forms beyond QUOTE.
1302 * fixed bug: occasional GC crashes on Solaris/x86
1303 * optimization: x86-64 supports stack allocation of results of simple
1304 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1305 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1306 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1307 (thanks to James Knight)
1308 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1309 by the standard (thanks to Stephen Compall)
1311 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1312 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1313 be used for bundling the runtime and the core file into one
1314 executable binary. This feature is not currently supported on all SBCL
1315 platforms. (thanks to James Bielman and NIIMI Satoshi)
1316 * new feature: a generational or ephemeral garbage collector is now
1317 the default on the PowerPC platform (both Linux and Darwin). The
1318 old Cheney (stop and copy) collector is a build-time option.
1319 (thanks to Cyrus Harmon, after Raymond Toy)
1320 * minor incompatible change: the method by which SBCL finds its
1321 contributed modules has changed; it no longer relies on symbolic
1322 links from an $SBCL_HOME/systems directory, but searches directly
1323 in the subdirectories of $SBCL_HOME.
1324 * enhancement: the dynamic heap size on the Linux/PPC platform is
1325 markedly larger, even using the older Cheney garbage collector.
1326 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1327 certain complicated string types. (reported by Gary King)
1328 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1329 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1330 * fixed bug: DOCUMENTATION on structures no longer signals an
1331 error if no structure type of the right name exists. (reported by
1333 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1334 applicable non-standard primary or :AROUND method on
1335 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1336 no longer cause unbound variable errors. (reported by Kevin Reid)
1337 * fixed bug: metacircle resolution in cases where methods have slots
1338 added before the slots from STANDARD-METHOD. (reported by Jean
1340 * fixed bug: the Power PC assembly code for calling into lisp
1341 sometimes computed its return address wrongly (depending on the
1342 15th bit of the address, fixed at link time). This used to
1343 manifest itself in a segmentation violation while building PCL.
1344 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1345 many others over the years)
1346 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1347 the stack pointer (treated as a signed integer) is negative.
1348 (thanks to Peter van Eynde)
1350 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1351 * new platform: experimental support for the Windows operating
1352 system has been added. (thanks to Alastair Bridgewater)
1353 * fixed several bugs in and robustified the PPC FFI (including
1354 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1355 * bug fix: allow non-simple string symbol names (reported by Paul
1357 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1359 * bug fix: saving a core corrupted callbacks on x86/x86-64
1360 * bug fix: closed a loophole in metacircularity detection and
1361 grounding in the PCL implementation of CLOS.
1362 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1363 (reported by tomppa on #lisp)
1364 * bug fix: clear the direction flag on Lisp -> C transitions, as
1365 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1366 (reported by Andrej Grozin and Hendrik Maryns)
1367 * optimization: major improvements to GC efficiency on GENCGC platforms
1368 * optimization: faster implementation of EQUAL
1369 * optimization: emit more efficient opcodes for some common
1370 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1371 * optimization: several other minor code-generation improvements on x86-64
1372 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1374 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1375 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1376 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1377 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1378 by ANSI as a generic function, and for consistency (SETF
1379 GENERIC-FUNCTION-NAME) is treated likewise.
1380 * fixed bug #233.b: make constraint propagation notice when a variable
1381 value is changed after it is referenced but before it is used
1382 * fixed bug #296: no more arbitrary behaviour from filenames with
1383 odd characters as --load arguments. (reported by Adam Warner)
1384 * fixed bug #390: :CHARACTER-SET pathname components now work as
1385 expected. (reported by Tim Daly Jr)
1386 * fixed bug #391: complicated :TYPE intersections in slot
1387 definitions no longer cause an error in PCL internals.
1388 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1389 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1390 returning the number of octets which would be written to the
1391 file-stream. (thanks to Robert J. Macomber)
1392 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1393 arguments to the internal stream functions. (thanks to David
1395 * bug fix: stack exhaustion is now handled on the x86/SunOS
1396 platform. (thanks to Daisuke Homma)
1397 * bug fix: more accurate ROOM results on GENCGC platforms
1398 * optimization: improved type inference for arithmetic-for
1399 index variables in LOOP
1400 * optimization: faster floating-point SQRT on x86-64
1401 * fixed some bugs revealed by Paul Dietz' test suite:
1402 ** DOCUMENTATION returns NIL instead of "" for method combinations
1403 that don't have a docstring
1405 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1406 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1407 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1408 therefore are not customizeable by user code (as seems to be at
1409 least permitted and maybe required by AMOP). As a consolation,
1410 however, the SBCL implementation of these functions now calls
1411 REINITIALIZE-INSTANCE as specified by AMOP.
1412 * bug fix: slot-definition documentation is propagated as per ANSI
1413 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1414 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1415 argument, as do eslotd initialization methods. (from Pascal
1416 Costanza's "Closer" project)
1417 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1418 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1420 * bug fix: it is now possible to have more than one subclass of
1421 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1422 (reported by Bruno Haible, Pascal Costanza and others)
1423 * bug fix: the dependent update protocol now works for generic
1424 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1425 and Pascal Costanza)
1426 * bug fix: condition-class instances corresponding to
1427 DEFINE-CONDITION forms are now created eagerly. (reported by
1428 Kalle Olavi Niemitalo on comp.lang.lisp)
1429 * bug fix: floating point printing is more accurate in some
1430 circumstances. (thanks to Simon Alexander)
1431 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1432 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1433 * bug fix: callbacks on OS X now preserve stack-alignment.
1434 (thanks to Cyrus Harmon)
1435 * enhancement: the x86-64 disassembler is much better at
1436 disassembling SSE instructions. (thanks to Lutz Euler)
1437 * enhancement: CHECK-TYPE on a variable now allows type-inference
1438 (thanks to Vincent Arkesteijn)
1439 * optimization: improved performance of EUC-JP external format.
1440 (thanks to NIIMI Satoshi)
1441 * optimization: performance improvements to IO on file streams of
1442 :ELEMENT-TYPE CHARACTER
1443 * optimization: much faster memory allocation on x86-64
1444 * optimization: faster garbage collections (latency and throughput)
1446 * optimization: faster bignum subtraction and division on x86 and x86-64
1447 (thanks to Lutz Euler)
1448 * optimization: more accurate type-inference for loops that use a
1449 floating point index variable or a negative step.
1451 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1452 * bug fix: add a workaround to SBCL looping infinitely at startup on
1453 Linux kernels with apparently buggy implementations of personality().
1454 (thanks to Svein Ove Aas)
1455 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1456 (thanks to David Lichteblau)
1457 * bug fix: local bindings shadow global symbol macros for
1458 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1459 * optimization: non-open coded uses of numeric comparison operators
1460 (e.g. >) no longer cons when called with more than one parameter
1461 on platforms supporting dynamic-extent allocation.
1462 * enhancement: saving cores with foreign code loaded is now supported
1463 on MIPS/Linux in addition to the previously supported platforms.
1464 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1465 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1466 * bug fix: division by zero in sb-sprof when no samples were collected
1467 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1468 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1469 (thanks to Alexander Kjeldaas)
1470 * new feature: ignoring the return values of destructive functions
1471 like NREVERSE signals a compile-time style-warning.
1472 (thanks to Kevin Reid)
1473 * new feature: the alignment of alien structure fields can be
1474 explicitly specified. (thanks to Cyrus Harmon)
1475 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1476 and dump core on SIGQUIT
1478 ** incompatible change: threads do not inherit values of specials
1479 from their parents (see manual)
1480 ** bug fix: threads stacks belonging to dead threads are freed by the
1481 next exiting thread, no need to gc to collect thread stacks anymore
1482 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1483 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1484 ** bug fix: dynamic variable and thread start related gc lossage
1485 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1487 * fixed some bugs revealed by Paul Dietz' test suite:
1488 ** SUBTYPEP is slightly more accurate on heinously complicated
1489 CONS types where some of the members have uncertain (in the
1490 NIL, NIL sense) type relationships to each other.
1492 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1493 no longer purified unless :PURIFY T is explicitly specified.
1494 ** Non-purified cores are significantly smaller than before
1496 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1497 * new feature: timers based on Zach Beane's excellent timer package
1498 * added support for the following external formats: koi8-u,
1499 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1500 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1501 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1502 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1503 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1504 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1505 * incompatible change: a threaded SBCL will no longer revert to
1506 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1507 * bug fix: interrupts are disabled until startup is complete; no
1508 more sigsegvs when receiving a signal to soon
1509 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1511 * bug fix: add a workaround for the memory randomization features in
1512 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1513 workaround will only be in effect on systems with the proc filesystem
1515 * bug fix: printing objects of type HASH-TABLE signals a
1516 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1518 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1519 have been running for over 50 days. (reported by Gilbert Baumann)
1520 * bug fix: the logic for getting names of functions gets less
1521 confused when confronded with alternate-metaclass
1522 funcallable-instances. (reported by Cyrus Harmon)
1523 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1524 consistent, even on internal alternate-metaclass objects.
1525 * bug fix: flush closure information collected by physical
1526 environment analysis prepass before the main pass. (bug reported
1528 * bug fix: compiler pack phase does not modify a hashtable, which is
1529 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1530 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1531 may be expanded. (reported by Alexander <malishev> on c.l.l)
1532 * bug fix: no more style-warnings when compiling code using LAST
1533 under high-SPEED low-SPACE settings. (reported by David Wallin
1535 * fixed some incompatibilities between SBCL's MOP and the MOP
1537 ** the METAOBJECT class is now implemented;
1538 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1539 STANDARD-OBJECT, as required;
1540 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1541 now compatible (as required by VALIDATE-SUPERCLASS); there
1542 remains a consistency requirement over the presence or absence
1543 of the FUNCTION class in the superclass list of finalized
1544 classes; see the manual for more details;
1545 ** the :AROUND method for COMPUTE-SLOTS on
1546 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1547 requested slot ordering.
1549 ** bug fix: parent thread now can be gc'ed even with a live
1551 ** bug fix: binding a special with PROGV to no value is not
1552 the same as that symbol not having been bound (thanks to
1554 ** bug fix: binding specials is thread safe (thanks to
1556 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1557 and SB-SPROF do not die with 'no handler for signal XX in
1558 interrupt_handle_now(..)' anymore
1559 ** bug fix: WITH-TIMEOUT works with multiple running threads
1560 * fixed some bugs revealed by Paul Dietz' test suite:
1561 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1562 the :method-class keyword argument.
1564 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1565 * new port: the Solaris operating system on x86 processors is now
1566 mostly supported, though some rough edges in the environment
1567 remain. (thanks to Daisuke Homma)
1568 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1569 space for its heap. (thanks to Thiemo Seufer)
1570 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1571 closures. (thanks to Thiemo Seufer)
1572 * minor incompatible change: eof selects abort in the debugger.
1573 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1574 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1576 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1577 deprecated, and will go away in a future revision of SBCL.
1578 * minor incompatible change: GC-ON and GC-OFF are no longer
1579 implemented with a counter, it does not matter how many times gc
1580 is switched on or off
1581 * bug fix: discriminating functions for generic function classes
1582 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1583 make invalid assumptions about method precedence order. (reported
1585 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1586 platforms. (thanks to Thiemo Seufer)
1587 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1588 * bug fix: correct pathname printing with printer escaping is on.
1589 (thanks to Kevin Reid)
1590 * bug fix: complex VOP definitions in "user-space" no longer trigger
1591 package locks. (reported by Zach Beane)
1592 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1593 for funcallable-instance functions, and is no different from
1595 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1596 characters in the current readtable. (reported by Nicholas Neuss)
1597 * bug fix: SUBTYPEP on various CONS types returns more a more
1598 accurate acknowledgment of its certainty.
1599 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1600 lists in some cases. This partially fixes bug 384.
1601 * flush all standard streams before prompting in the REPL and the
1603 * bug fix: signal handling and triggering gc do not conflict
1604 directly anymore, in particular a high frequency sb-sprof does
1605 not prevent gc from running
1606 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1607 approximation for timezone and DST information between the
1608 universal time epoch and the smallest negative 32-bit time_t.
1609 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1610 year 1899 so long as the encoded time is non-negative.
1611 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1612 the correct answer for non-constant rotate amounts when performing
1613 an inline 32-bit rotation.
1615 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1616 there is only one thread in the session
1617 ** bug fix: memory leak for streams created in one thread and
1618 written to in another
1619 ** bug fix: lockup when compiled with gcc4
1620 ** bug fix: race that allows the gc to be triggered when gc is
1622 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1623 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1625 ** bug fix: finished threads are gc'ed properly
1626 * fixed some bugs revealed by Paul Dietz' test suite:
1627 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1628 has arguments with a different set of applicable methods from
1629 the orignal arguments.
1630 ** The type error thrown by MAP now has a correct expected-type
1632 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1633 name a compiled function.
1634 ** Three MISC tests where a large bignum was improperly coerced to
1635 a float that couldn't represent that bignum during type
1636 derivation were fixed.
1637 ** SUBTYPEP can now handle types involving the negation of a
1638 list-form FUNCTION type.
1639 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1640 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1641 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1643 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1644 * New feature: Experimental support for bivalent streams: streams
1645 opened with :element-type :default now allow character and binary
1646 (unsigned-byte 8) I/O
1647 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1648 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1650 * bug fix: no more highly sporadic "couldn't check whether ~S is
1651 readable" when reading a stream and an interrupt hits in the middle
1652 of a select system call
1653 * compiler better recognizes complex arrays (reported by Eduardo
1655 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1656 for variables on SBCL built with linkage-tables. (reported by Luis
1658 * various error reporting improvements.
1659 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1660 (Thanks to Thiemo Seufer)
1661 * bug fix: nested reader invokations work correctly
1662 * bug fix: it is possible to have simultaneous references to foreign
1663 code and foreign data with the same name.
1665 ** added x86-64 support
1666 ** incompatible change: the threading api now works with thread
1667 objects instead of thread ids
1668 ** bug fix: threads are protected from signals and interruption when
1669 starting up or going down
1670 ** bug fix: a race where an exiting thread could lose its stack to gc
1671 ** bug fix: don't halt on infinite error in threads if possible
1672 ** fixed numerous gc deadlocks introduced in the pthread merge
1673 ** bug fix: fixed thread safety issues in read and print
1674 ** bug fix: debugger doesn't hang on session lock if interrupted at
1675 an inappropriate moment
1676 ** bug fix: run-program is now thread safe(r)
1677 ** bug fix: inner with-recursive-lock no longer releases the mutex
1678 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1679 * fixed some bugs revealed by Paul Dietz' test suite:
1680 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1681 EXPECTED-TYPE slots filled.
1682 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1684 ** MAKE-CONDITION accepts classes as type-designators.
1685 ** COMPILE may never return NIL.
1686 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1687 range before calling Unix time functions
1689 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1690 * numerous signal handling fixes to increase stability
1691 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1692 * minor incompatible change: we now correctly canonize default
1693 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1694 as per the MOP, rather than the historical (INITARG INITFUNCTION
1695 INITFORM). (reported by Bruno Haible)
1696 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1697 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1698 for more information.
1699 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1700 pathname is a directory pathname.
1701 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1702 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1704 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1705 :METACLASS argument in addition to a class name. (reported by
1706 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1707 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1708 (reported by Bruno Haible; patch from Gerd Moellmann)
1709 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1711 * bug fix: more cleanups to the floating point exception handling on
1712 x86-64 (thanks to James Knight)
1713 * bug fix: the compiler does not try to constant fold calls of
1714 COERCE and BIT-* functions when they return freshly constructed
1715 objects. (reported by Nikodemus Siivola and Paul Dietz)
1716 * optimization: improved the MIPS versions of generic (in the
1717 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1718 * optimization: direct conversion of (unsigned-byte 32) to floats on
1719 the PowerPC platform.
1720 * optimization: structure instances with raw slots now use less
1721 memory, and probably show better memory locality. (thanks to
1723 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1724 are treated as requests for stack allocation on the x86-64,
1725 Alpha-32, PPC and SPARC platforms.
1726 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1727 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1728 (thanks to Tony Martinez)
1730 ** gcing a dead thread can no longer lead to lockups
1731 ** threads block signals until they are set up properly
1732 ** errno is no longer shared by threads
1733 ** interrupt-thread restores the eflags register on x86
1734 ** fixed some lockups due to gc/thread interaction
1735 * fixed some bugs revealed by Paul Dietz' test suite:
1736 ** invalid dotted lists no longer raise a read error when
1737 *READ-SUPPRESS* is T
1738 ** signal an error if a symbol that names a declaration is used
1739 as the name of a type, or vice versa
1740 ** allow using the (declare (typespec var*)) abbreviation for
1741 (declare (type typespec var*)) with all type specifiers
1742 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1743 ** always return NIL from PPRINT-POP when OBJECT is NIL
1744 ** don't signal errors when pretty-printing malformed LABELS,
1745 FLET or MACROLET forms
1746 ** declarations in a DOLIST body are also in scope for the
1748 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1750 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1753 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1754 * fixed cross-compiler leakages that prevented building a 32-bit
1755 target with a 64-bit host compiler.
1756 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1757 opened with :IF-EXISTS :OVERWRITE.
1758 * fixed bug 281: error for an invalid qualifier in a short-form method
1759 combination method is not signalled until the faulty method is called.
1760 * bug fix: iteration variable type inferrer failed to deal with open
1761 intervals. (reported by Alan Shields)
1762 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1763 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1764 or more runtime options were provided to the sbcl binary.
1765 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1766 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1767 * optimization: there's now a fast-path for fixnum arguments in the
1768 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1769 * optimization: the code generated on x86-64 is more compact thanks
1770 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1771 * bug fix: floating-point exception handling now partly works on
1772 x86-64. (Thanks to James Knight)
1773 * improvement to the MIPS backend from Thiemo Seufer: C-style
1774 64-bit long long arguments and return values to alien functions
1776 * fixed some bugs revealed by Paul Dietz' test suite:
1777 ** the type-error signalled from WARN has a filled-in DATUM slot.
1778 ** the type-error required when a stream is not associated with
1779 a file has the stream as its datum.
1780 ** type-errors on single-floats on x86-64 no longer have
1781 :INVALID-OBJECT as the datum
1782 ** the type-errors signalled for invalid function names now have
1783 a correct expected type
1784 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1785 for structures defined with a :TYPE. Documentation strings for
1786 typed structures are no longer immediately discarded
1787 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1788 broadcast streams and synonym streams. FILE-LENGTH now also works
1789 on broadcast streams.
1791 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1792 * incompatible change: the --noprogrammer option, deprecated since
1793 version 0.7.5, has been removed. Please use the equivalent
1794 --disable-debugger option instead.
1795 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1797 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1798 inoperational for a while now) has been completely removed.
1799 * null lexical environments are now printed as #<NULL-LEXENV>,
1800 significantly reducing the amount of clutter in typical backtraces.
1801 * documentation on weak pointers, finalization, and after GC hooks
1802 has been added to the manual.
1803 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1804 as other specialized array types, is much faster. SUBSEQ and
1805 COPY-SEQ on such arrays have also been sped up.
1806 * optimization: EQL is now more efficient when at least other argument
1807 is known to be of type (OR FIXNUM (NOT NUMBER)).
1808 * fixed bug: the runtime is now less vulnerable to changes in the
1809 size of the SBCL object on OS X, and virtual memory is reserved for
1810 all spaces that need to be at a fixed address.
1811 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1812 * fixed bug: finalizers and after GC hooks that cause consing are now
1814 * fixed bug: compiler error messages and summaries are now printed to
1815 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1816 * fixed inference of the upper bound of an iteration variable.
1817 (reported by Rajat Datta).
1818 * fixed bug 211e: calling local functions with duplicated constant
1819 keyword argument no longer causes a bogus style warning about an
1821 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1822 ftype declaration to be disregarded. (reported by Dave Roberts)
1823 * fixed bug 373: caused by erronous compilation of references to alien
1824 variables in the runtime on ppc/darwin.
1825 * fixed bug 376: CONJUGATE type deriver.
1826 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1827 (reported by Baughn on #lisp)
1828 * a cross-compiler bug on non-x86 platforms has been identified and
1829 fixed. (thanks to Bruno Haible)
1830 * improvements to the MIPS runtime code for increased stability.
1831 (thanks to Thiemo Seufer)
1832 * increased the maximimum compact environment size to allow
1833 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1834 * partial workaround for bug 135: don't name the function we're
1835 calling for hairy cases of EVAL, so as not to accumulate one environment
1836 entry per call to EVAL. (reported by Kevin Reid)
1837 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1838 * optimization: type testing for non-vector arrays should be faster.
1839 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1841 * bug fix: setting 31st element of a bit vector to zero did not work
1843 * bug fix: redefining a class definition which failed due to a
1844 previous accessor / function clash now works (but see BUGS entry
1845 #380 for more problems in this area). (thanks to Zach Beane)
1846 * the long form of DEFINE-METHOD-COMBINATION disables method group
1847 checking when given a single method group with pattern *. (thanks
1849 * on x86 compiler supports stack allocation of results of simple
1850 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1851 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1852 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1853 * fixed some bugs related to Unicode integration:
1854 ** the restarts for recovering from input and output encoding
1855 errors only appear when there is in fact such an error to
1857 * fixed some bugs revealed by Paul Dietz' test suite:
1858 ** MISC.549 and similar: late transformation of unsafe type
1859 assertions into derived types caused unexpected code
1861 ** SCALE-FLOAT type deriver is less wrong.
1862 ** type derivers for EXP, LOG and similar functions compute result
1863 types for complex arguments better.
1864 ** (MISC.563) CONJUGATE type deriver works for very restricted
1866 ** out-of-line type testers for character strings are available.
1867 ** EQUAL compiler transform understands specialness of objects
1869 ** accessing double-floats stored on the stack now works on x86-64.
1870 ** debugger internals could sometimes create invalid lispobjs,
1871 resulting in GC crashes.
1872 ** MISC.548: type check weakening can convert required type into
1874 ** initialization forms for bindings are not in scope of free special
1877 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1878 * incompatible change: thread support for non-NPTL systems has
1879 been removed - locking is buggy and unreliable. A threaded
1880 SBCL build will now warn at startup and refuse to create
1881 new threads, unless futex support is detected in the kernel
1882 * incompatible change: the top level REPL now has only an ABORT
1883 restart associated with it, not TOPLEVEL and ABORT as it used to.
1884 TOP and TOPLEVEL are now available as debugger commands for
1885 returning to the top level.
1886 * incompatible change: forms evaluated in the REPL now use the
1887 global optimization policy.
1888 * incompatible change: user- and system-initialization files are
1889 no longer processed with LOAD, but by READ and EVAL; hence the
1890 global optimization policy, startup package, readtable, etc,
1892 * The .fasl file format number has been incremented because of
1893 various incompatible changes.
1894 * internal entry point details and argument counts no longer appear
1895 in backtraces unless explicitly requested by setting
1896 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1897 * built-in and standard functions no longer have names like "top
1898 level local call to FOO".
1899 * fixed bug 32: functions defined in non-null lexical environments
1900 now have more legible printed representation
1901 * fixed bug 33: functions defined in non-null lexical environemnts
1902 are now more amenable to inspection by INSPECT.
1903 * workaround for bug 354: XEPs no longer appear in backtraces unless
1904 explicitly requested.
1905 * fixed bug: receiving the signal which results from attempting to
1906 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1907 SIGBUS on other *BSDs) on architectures where the C stack is also
1908 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1909 to debugger confusion or wild instability. (reported by Cheuksan
1911 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1912 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1913 (reported by Lutz Euler)
1914 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1915 compiled code. (reported by Paul Dietz)
1916 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1917 specialized parameter to a method to something that is not TYPEP
1918 the specializer is now possible.
1919 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1920 face of package deletion.
1921 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1922 pathname. (reported by David Tolpin on c.l.l)
1923 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1924 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1925 STRING-STREAM and FILE-STREAM, respectively.
1926 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1927 than previously; in addition, its test suite is now run on build.
1928 (thanks to Luke Gorrie)
1929 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1930 * optimization: added a immediate representation for single-floats
1932 * fixed some bugs revealed by Paul Dietz' test suite:
1933 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1934 ** attempting to create a package with a colliding nickname causes
1935 correctable errors to be signalled.
1936 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1937 ** several x86-64 backend bugs related to sign-extension of immediate
1940 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1941 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1942 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1944 * fixed loading of multiply forward-referenced layouts.
1945 (thanks to Cheuksan Wang)
1946 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1947 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1948 (see COMPILE-FILE documentation for details of :PRINT option)
1949 * fixed bugs 19 and 317: fixed-format floating point printing is
1950 more accurate. This also fixes a bug reported by Adam Warner
1951 related to the ~@F format directive.
1952 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1954 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1955 dispatch table if the from-char is a dispatch macro character.
1956 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1957 by the wordsize no longer ignore the last word. (reported by Lutz
1959 * fixed bug in type checking of dynamic-extent variables. (reported
1961 * optimization: sequence traversal functions use their freedom to
1962 coerce function designators to functions.
1963 * optimization: code with many calls to CLOS methods specialized on
1964 CLOS classes has had redundant type checks removed.
1965 * optimization: added declarations to speed up operations that access
1966 the internal character database (for example STRING-UPCASE)
1967 * optimization: comparison operations between floats and sufficiently small
1968 fixnums no longer create extra rationals
1969 * fixed some bugs related to Unicode integration:
1970 ** portions of multibyte characters at the end of buffers for
1971 character-based file input are correctly transferred to the
1972 start of the buffer at the next read.
1973 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1974 passing it through to OPEN.
1975 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1976 argument given to internal calls to OPEN.
1977 ** the built-in comment readers (introduced by character sequences
1978 ";" and "#|") are more forgiving to encoding errors; they will
1979 STYLE-WARN and then attempt to resync the stream at a character
1980 boundary. (thanks to Teemu Kalvas)
1981 * fixed some bugs in the x86-64 port:
1982 ** Negative short int return values from c-calls are sign-extended
1984 ** The stack is aligned to 16-bytes for c-calls, as required by
1985 the ABI. (thanks to Cheuksan Wang)
1986 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1987 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1988 for enums. (thanks to Vincent Arkesteijn)
1989 ** Multiple small optimizations and bugfixes for floating point
1991 * fixed some bugs revealed by Paul Dietz' test suite:
1992 ** Space, Tab, Linefeed, Return and Page have the invalid
1993 secondary constituent character trait.
1994 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1996 ** WITH-INPUT-FROM-STRING should only update the index place on
1998 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1999 works more reliably.
2000 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2001 with one-dimensional arrays with fill pointers.
2002 ** TYPE-OF failed on a complex with an integer realpart and a
2004 ** compiler failure during type inference for the code of form
2005 (IF (EQL X (THE ...)) ...) (MISC.535).
2007 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2008 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2009 platform. The port supports 61-bit fixnums, large memory spaces
2010 and reloading shared object files.
2011 * enhancement: saving cores with foreign code loaded is now
2012 supported on ppc/Darwin in addition to the previously supported
2014 * enhancement: the statistical profiler now walks deeper into the
2015 call stack for more meaningful call-graphs and accrued time
2016 reports (x86/x86-64 only). It also now reports time spent in
2018 * enhancement: it is now possible to trace most individual methods
2019 of a generic function in addition to tracing the generic function
2021 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2023 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2024 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2025 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2026 produces an error. (thanks to Vincent Arkesteijn)
2027 * bug fix: NAMESTRING on pathnames with :WILD components in their
2028 directories works correctly. (thanks to Artem V. Andreev)
2029 * fixed bug 125: compiler preserves identity of closures. (reported
2031 * bug fixed: functions with &REST arguments sometimes failed with
2032 "Undefined function" when compiled with (DEBUG 3). (reported by
2034 * bug fix: overflow during compiling of setting element of a bit
2035 vector with constant index and value. (reported by Timmy Douglas)
2036 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2037 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2038 * on x86 compiler partially supports stack allocation of dynamic-extent
2040 * GO and RETURN-FROM do not check the extent of their exit points
2041 when compiled with SAFETY 0.
2042 * fixed some bugs related to Unicode integration:
2043 ** encoding and decoding errors are now much more robustly
2044 handled; it should now be possible to recover even from invalid
2045 input or output to the terminal. (thanks to Teemu Kalvas)
2046 ** provided a first cut at implementing STRING-TO-OCTETS and
2047 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2048 ** altered the SB-MD5 contributed module slightly, changing the
2049 interface just enough for it to be supportable for builds where
2050 lisp characters are not eight bits.
2051 * fixed some bugs revealed by Paul Dietz' test suite:
2052 ** the FORMATTER-generated functions for ~V[ conditionals require
2053 the correct number of arguments.
2054 ** READ-FROM-STRING returns the mandated second value when applied
2055 to displaced strings.
2056 ** the #\Rubout and #\Backspace characters are treated as invalid
2057 constituent characters by the tokenizer.
2059 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2060 * new feature: reloading changed shared object files with
2061 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2062 * new feature: references to foreign variables and functions
2063 can now be compiled and loaded before the corresponding shared
2064 object file is loaded, as long as the foreign definitions are
2065 available at runtime.
2066 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2067 supported. (thanks to Dan Debertin)
2068 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2069 just keywords. (thanks to Vincent Arkesteijn)
2070 * fixed bug #331: structure-class instances corresponding to
2071 DEFSTRUCT forms are now created eagerly.
2072 * fixed bug #345: backtraces from calls to undefined functions work
2073 on x86 as well. Related bug #61 is now also partially fixed on x86
2074 (backtraces from throws to unknown catch tags.)
2075 * bug fix: lambda-list parsing is now stricter vrt. order and number
2076 of lambda-list keywords.
2077 * bug fix: as specified by AMOP, an error is signalled if a
2078 class-option appears multiple times in a DEFCLASS form. (reported
2080 * bug fix: RANDOM can be compiled when the compiler derives the type
2081 of its numeric argument as a disjoint set of small integers.
2082 (reported by Paul Dietz)
2083 * bug fix: starting a core saved with shared objects loaded when
2084 those objects are not available no longer causes threaded SBCL to
2085 hang. (reported by Sean Ross)
2086 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2088 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2089 argument, which must always be NIL. (reported by Kalle Niemitalo)
2090 * bug fix: printing 1.0d+23 no longer results in an error.
2091 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2092 * bug fix: structure slot setters preserve evaluation order. (thanks
2094 * fixed some bugs related to Unicode integration:
2095 ** RUN-PROGRAM can allow its child to take input from a Lisp
2096 stream. (reported by Stefan Scholl)
2097 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2098 locales. (reported by Ken Causey)
2099 * fixed some bugs revealed by Paul Dietz' test suite:
2100 ** INCF, DECF and REMF evaluate their place form as specified in
2102 ** FORMATTER expands ~{ ~} iteration directives with V or #
2103 parameters correctly.
2104 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2105 consequent uses no arguments correctly.
2106 ** the system has a partial understanding of the (COMPLEX RATIO)
2108 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2111 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2112 * new feature: a build-time option (controlled by the :SB-UNICODE
2113 keyword feature, enabled by default) for building the system with
2114 support for the entire 21-bit character space defined by the
2116 * new feature: the system now has rudimentary external-format
2117 support; the primary user-visible change at this time is that
2118 characters with the high bit set (such as lower-case-e-acute) will
2119 print correctly to a terminal in a UTF-8 environment.
2120 * minor incompatible change: BASE-CHAR no longer names a class;
2121 however, CHARACTER continues to do so, as required by ANSI.
2122 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2123 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2124 has been moved to the SB-EXT package (temporarily re-exported from
2126 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2127 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2129 * fixed bug #351: better error-handlind and reporting for malformed
2131 * fixed bug #350: bignum-printing is now more memory-efficient,
2132 allowing printing of very large bignums, eg. (expt 2 10000000).
2133 (reported by Bruno Haible)
2134 * fixed bug #302: better primitive-type selection for intersection
2136 * fixed bug #308: non-graphic characters now all have names, as
2137 required. (reported by Bruno Haible)
2138 * bug fix: redefining a class with different superclasses now correctly
2139 removes it from the direct-subclasses of its previous superclasses.
2140 (reported by David Morse)
2141 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2142 new value now works. (reported by Bruno Haible)
2143 * bug fix: correct canonicalization of multiple non-standard slot
2144 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2145 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2146 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2147 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2148 now exists, an signals an error.
2149 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2150 during macroexpansion for non-iteration variables as well. (reported
2151 by Bruno Haible for CMUCL)
2152 * bug fix: Cyclic structures and unprintable objects in compiler
2153 messages no longer cause errors. (reported by Bruno Haible)
2154 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2155 and READ-FROM-STRING all now return a primary value of NIL if
2156 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2157 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2158 (reported by Bruno Haible for CMUCL)
2159 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2160 do not designate a condition. (reported by Bruno Haible for
2162 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2163 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2164 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2165 permitting resolution in favour of any of the conflicting symbols.
2166 (reported by Bruno Haible for CMUCL)
2167 * bug fix: EQUAL compiler optimizations is less aggressive on
2168 strings which can potentially compare true despite having distinct
2169 specialized array element types.
2170 * bug fix: unit enumerations can be defined without dividing by
2171 zero. (thanks to Vincent Arkesteijn)
2172 * FORMAT compile-time argument count checking has been enhanced.
2173 (report from Bruno Haible for CMUCL)
2174 * a partial workaround for the bug 262: the compiler does not try to
2175 inline-expand a local function doing RETURN-FROM from a deleted
2176 BLOCK. (thanks to Peter Denno for the bug report and to David
2177 Wragg for the simple test case)
2178 * fixed some bugs revealed by Paul Dietz' test suite:
2179 ** RENAME-PACKAGE allows all package designators as new package
2181 ** constraint propagation and lambda variable substitution are
2182 more cautious in dealing with partially deleted code.
2183 ** compiler sometimes lost reoptimization passes.
2184 ** CERROR, given a condition as condition designator, passes its
2185 remaining arguments to the continue format control without
2187 ** Case-altering FORMAT directives work correctly on non-ASCII
2189 ** The REAL type specifier handles bounds outside the floating
2190 point ranges without signalling FLOATING-POINT-OVERFLOW.
2191 ** Functions with IR1-transformations can create intercomponent
2192 references to global functions.
2193 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2195 ** FORMAT ~R treats a nil value for its first parameter correctly.
2197 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2198 * enhancement: saving cores with foreign code loaded is now
2199 supported on x86/NetBSD and sparc/Linux in addition to the previously
2200 supported platforms.
2201 * bug fix: on some platforms repeated installations caused multiple
2202 copies of HTML documentation to be installed -- should not happen
2203 any more. (reported by Stefan Scholl)
2204 * bug fix: parsing self-recursive alien record types multiple times
2205 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2206 original patch by Helmut Eller for CMUCL)
2207 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2208 (thanks to Richard Kreuter)
2209 * bug fix: defining classes whose accessors are methods on existing
2210 generic functions in other (locked) packages no longer signals
2211 bogus package lock violations. (reported by François-René Rideau)
2212 * bug fix: special variables as DEFMETHOD parameters no longer have
2213 associated bogus type declarations. (reported by David Wragg and
2215 * bug fix: read-write consistency on streams of element-type
2216 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2217 * bug fix: redefiniton of the only method of a generic function with
2218 no DEFGENERIC no longer emits a full WARNING. In addition,
2219 redefinition of generic functions with no DEFGENERIC to an
2220 incompatible lambda list now signals an error. (thanks to Zach
2222 * bug fix: DEFGENERIC now works even when there's a function of the
2223 same name in an enclosing lexical environment. (thanks to Zach
2225 * fixed compiler failure, caused by instrumenting code during
2226 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2227 * optimization: added loop analysis and improved register allocation
2228 * fixed some bugs revealed by Paul Dietz' test suite:
2229 ** POSITION on displaced vectors with non-zero displacement
2230 returns the right answer.
2231 ** (SIMPLE-STRING) is a valid type specifier for sequence
2233 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2235 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2236 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2238 ** The justification version of the FORMAT ~< directive treats
2239 non-zero minpad parameter correctly.
2241 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2242 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2243 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2244 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2245 the supported interface.
2246 * new feature: Single-stepping of code compiled with DEBUG 2 or
2247 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2248 * new feature: saving cores with foreign code loaded is now
2249 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2250 Timothy Moore's work for CMUCL)
2251 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2252 parameters to * instead of NIL if no initform is supplied.
2253 (reported by Johan Bockgaard)
2254 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2255 correctly when FUNCALL appears as the car of the form. Note:
2256 despite this FUNCALL forms are not currently subject to
2257 compiler-macro expansion. (port of Raymond Toy's fix for the
2258 same from CMUCL, reported by Johan Bockgaard)
2259 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2260 (thanks for Teemu Kalvas)
2261 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2262 case instead of terminating the iteration (thanks for Julian
2263 Squires, Sean Champ and Raymond Toy)
2264 * bug fix: incorrect expansion of defgeneric that caused a style
2265 warning. (thanks for Zach Beane)
2266 * bug fix: slot accessor effective method computation works properly
2267 for classes with multiple non-standard applicable methods on
2268 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2269 * on x86 compiler supports stack allocation of results of LIST and
2270 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2271 CMUCL implementation by Gerd Moellmann)
2272 * fixed some bugs revealed by Paul Dietz' test suite:
2273 ** FORMAT strings with both the ~<~:;~> form of the justification
2274 directive and pretty-printing directives cause an error.
2276 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2277 * incompatible change: the internal functions
2278 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2279 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2280 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2281 instead of the old functions.
2282 * new feature: on platforms where "dladdr" is available foreign
2283 function names now appear in backtraces. (based on Helmut Eller's
2285 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2286 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2288 * documentation: ASDF manual is now distributed with SBCL.
2289 * bug fix: SBCL can now load its contributed modules with REQUIRE
2290 even if the system-provided entries have been removed from
2291 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2293 * bug fix: backtraces involving undefined functions or assembly
2294 routines are more informative. (thanks to Brian Downing)
2295 * bug fix: mutually referent alien structures now work correctly.
2296 (reported by Rick Taube)
2297 * bug fix: structures defined by WITH-ALIEN can be referred to
2298 within other definitions in the same WITH-ALIEN.
2299 * bug fix: division operators (MOD, TRUNCATE and the like) with
2300 constant zero divisors and integer dividends no longer generate
2302 * bug fix: provide default methods for INPUT-STREAM-P and
2303 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2304 * bug fix: improve the detection and resolution of MOP metacycles
2305 (where effective method computation depends on the generic function
2306 having its effective method computed). (reported by Bruno Haible)
2307 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2308 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2309 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2310 * bug fix: pathnames with relative directory components can be
2311 represented relative to default pathnames.
2312 * optimization: in taking the GCD of bignums, reduce the two bignums
2313 to approximately the same size (using Euclid's algorithm) before
2314 applying the more sophisticated binary GCD. (thanks to Juho
2316 * optimization: COUNT on bitvectors now operates word-at-a-time.
2317 * optimization: ASH with a positive, but not necessarily constant,
2318 (leftwards) shift, when in a modular context, is compiled to a
2320 * fixed some bugs revealed by Paul Dietz' test suite:
2321 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2322 if the corresponding argument is NIL.
2323 ** FORMAT directives accepting a minpad parameter treat negative
2325 ** literal commas as character parameters to FORMAT directives are
2327 ** literal spaces directly after ~<Newline> directives within a
2328 format-logical-block (~:< ~@:>) do not induce :FILL-style
2329 conditional newlines.
2330 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2331 as specified: it no longer includes conditional newlines).
2332 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2334 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2335 :PER-LINE-PREFIX argument does not evaluate to a string.
2337 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2338 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2339 the manual for details; for now, package locks can be disabled by
2340 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2341 if no major problems are found then it is likely that they will be
2342 compiled in unconditionally.
2343 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2344 unsupported operators on all platforms. To load a shared library
2345 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2346 object file, link it into a shared library outside of SBCL and
2347 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2349 * bug workaround: ROOM T and the GC were not working together
2350 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2351 reporting facility aren't preserved. That reporting has been
2352 disabled, so now until and unless someone figures out how to make it
2353 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2354 * minor incompatible change: as threatened around sbcl-0.8.0, the
2355 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2356 The symbols are also exported from SB-PCL for backwards
2357 compatibility, but more so than before SB-PCL should be treated as
2358 an implementation-internal package.
2359 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2361 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2362 It is known as of this release not to work on the Alpha, however.
2363 * fixed bug #167: errors signalled due to illegal syntax in method
2364 bodies are now more legible.
2365 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2366 designators and can hence be used with TYPEP.
2367 * fixed bug #333: CHECK-TYPE now ensures that the type error
2368 signalled, if any, has the right object to be accessed by
2369 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2370 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2371 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2373 * fixed bug #334: programmatic addition of slots using specialized
2374 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2375 and :ALLOCATION :CLASS slots.
2376 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2377 float exponents. (rereported by Peter Seibel)
2378 * fixed a bug: #\Space (and other whitespace characters) are no
2379 longer considered to be macro characters in standard syntax by
2380 GET-MACRO-CHARACTER.
2381 * fixed bug: initialization of condition class metaobjects no longer
2382 causes an instance of the condition to be created. (reported by
2384 * fixed bug: it is now possible to have slots such that
2385 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2386 description is neither :INSTANCE nor :CLASS.
2387 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2388 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2389 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2390 non-standard SLOT-DEFINITION-ALLOCATION values.
2391 * fixed bugs: various race conditions handling exiting threads.
2392 CL-PPCRE's thread torture test now passes.
2393 * fixed arguably-a-bug: GC time proportional to number of threads in
2394 system even when most of them are idle
2395 * optimization: improved performance of BIT and SBIT on bit-vectors.
2396 * .fasl file incompatibility: The fasl file version number has
2397 been incremented because of changes associated with package locks.
2399 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2400 * minor incompatible change: the system no longer provides
2401 optimization hints (conditions which are TYPEP
2402 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2403 mode; these hints are still emitted when higher SPEED optimization
2405 * new contrib module: a sampling profiler (profiling by statistical
2406 sampling, rather than by instrumenting functions) is available as
2407 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2408 * the behaviour of the standard function ED is now customizeable by
2409 third parties through a hook variable: see ED's documentation
2410 string for information on the protocol.
2411 * the compiler no longer emits efficiency notes for (FUNCALL X)
2412 when the type of X is uncertain under default optimization
2414 * fixed bug 276: mutating a binding of a specialized parameter to a
2415 method to something that is not TYPEP the specializer is now
2417 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2418 exhibit the required behaviour on the x86 platform. (thanks to
2419 Peter van Eynde, Eric Marsden and Bruno Haible)
2420 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2421 even for difficult arguments. (reported by Peter Graves)
2422 * fixed bug 141a: the backquote printer now descends quoted
2424 * fixed another bug in backquote printing: no more destructive
2425 modification of the form's list structure. (reported by Brian
2427 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2428 move between its address being taken and the call to
2429 interrupt_thread, fixing a crashing race condition.
2430 * the SB-POSIX contrib implementation has been adjusted so that it
2431 no longer exhibits ridiculously poor performance when constructing
2432 instances corresponding to C structs.
2434 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2435 * minor incompatible change: the sb-grovel contrib now treats C
2436 structures as alien (in the sense of SB-ALIEN) objects rather than
2437 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2438 has implications for memory management of client code
2439 (sb-grovel-returned objects must now be manually managed) and for
2440 type safety (alien objects now have full types).
2441 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2442 used to control emission of compiler diagnostics, rather than the
2443 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2444 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2445 quality should be considered deprecated.
2446 * install.sh now installs the user manual as well
2447 * (not quite a new documentable feature, but worth considering in
2448 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2449 beginnings of a semantically meaningful condition hierarchy is
2450 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2452 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2453 designator as the defaults argument.
2454 * fixed bug: Displaced arrays whose displaced-to array has become
2455 too small now cause ARRAY-DIMENSION to signal an error, providing
2456 for safer bounds-checking. (reported by Bruno Haible)
2457 * fixed bug: DEFCLASS slot definitions with identical :READER and
2458 :WRITER names now signal a reasonable error. (reported by Thomas
2460 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2462 * fixed bug: Invalid slot specification errors now print correctly.
2463 (thanks to Zach Beane)
2464 * fixed bug 320: Shared to local slot value transfers in class
2465 redefinitions now happen corrently from superclasses as
2466 well. (reported by Bruno Haible)
2467 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2469 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2470 improper lists correctly. (reported by Bruno Haible)
2471 * fixed bug 313: source-transform for <fun-name> was erroneously
2472 applied to a call of a value of a variable with name <fun-name>.
2473 (reported by Antonio Menezes Leitao)
2474 * fixed bug 307: The obsolete instance protocol ensures that
2475 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2476 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2477 remove dead unknown-values globs from the middle of the stack.
2478 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2479 easier to resume long computations after using *BREAK-ON-SIGNALS*
2480 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2481 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2482 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2483 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2484 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2485 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2487 * fixed a (fairly theoretical) bug in string printing: if
2488 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2489 does not have array-element-type equal to the most general string
2491 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2492 function name. (thanks to Nikodemus Siivola)
2493 * fixed bug: compile-time format string checker failed on
2494 non-closed ~{. (reported by Thomas F Burdick)
2495 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2496 don't warn on legal loop code involving more than one aggregate
2497 boolean. (thanks to Nikodemus Siivola)
2498 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2499 in keyword position to MAKE-PACKAGE was not being reported as
2501 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2502 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2504 * fixed bugs 280 and 312: the checking for multiple definitions in a
2505 file is less likely to become confused by uses of inline
2507 * fixed bug: the #S reader macro performs the keyword coercion
2508 specified for slot names. (reported by Kalle Niemitalo)
2509 * fixed bug: lambda lists may contain symbols whose names start with
2510 & but are not lambda-list-keywords; their occurrence triggers a
2512 * fixed bug 321: define-method-combination argument lambda lists do
2513 not cause invalid code to be generated when &optional or &aux
2514 variables have default values. (reported by Bruno Haible)
2515 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2516 have CLOS classes; this appears also to have fixed reported
2517 instability in stack exhaustion detection.
2518 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2519 MUFFLE-WARNING when no associated restart is present is now
2521 * optimization: rearranged the expansion of various defining macros
2522 so that each expands into only one top-level form in a
2523 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2525 * optimization: used a previously little-used slot in symbols to
2526 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2528 * fixed some bugs revealed by Paul Dietz' test suite:
2529 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2531 ** Fixed an optimization bug related to inheritance of initforms
2532 from local to shared slots.
2533 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2534 ** CAST optimizer forgot to flush argument derived type.
2535 ** print/read consistency on floats is now orders of magnitude
2536 more likely. (thanks also to Bruno Haible for a similar report
2538 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2539 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2540 for objects of type REAL. Make it so.
2541 ** SXHASH is specified (infelicitously) to respect similarity,
2542 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2543 it so. (thanks to Markus Ziegler)
2544 ** on the Alpha, the compiler succeeds in compiling functions
2545 returning a known number of arguments greater than 63.
2546 ** fixed handling of invalid NIL arguments in keyword position
2548 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2550 ** provided a readably-printable representation for RANDOM-STATE
2552 ** ensured that pathnames, where they have a namestring, always
2553 print using #P"..." syntax.
2555 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2556 * Support for the forthcoming 2.0 version of the NetBSD kernel
2557 running on x86 hardware has been added. (thanks to Perry
2558 E. Metzger most immediately, and others for their past work)
2559 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2560 current release version; SBCL's OpenBSD support had been broken
2561 since about the time of OpenBSD's switch to ELF binary format.)
2562 * [placeholder for DX summary]
2563 ** user code with &REST lists declared dynamic-extent, under high
2564 speed or space and low safety and debug optimization policy.
2565 * The manual has been converted to Texinfo format and the debugger
2566 chapter from the cmucl manual has been added.
2567 * A facility has been added to extract documentation strings from
2568 sbcl and store them as Texinfo-formatted snippets for inclusion in
2569 the manual (via Texinfo's @include directive)
2570 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2571 the test case to Dave Roberts)
2572 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2573 pointers. (reported by Sean Ross)
2574 * bug fix: PROFILE output is printed nicely even for large numerical
2575 values. (thanks to Zach Beane)
2576 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2577 greater than 32 handle EOF correctly.
2578 * bug fix: on X86 an immediate argument of the IMUL instruction is
2579 correctly printed in disassembly. (thanks to Lutz Euler)
2580 * bug fix: class slots in redefined classes preserve their old
2581 values. (thanks to Bruno Haible and Nikodemus Siivola)
2582 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2583 succeeds. (reported by Marco Baringer)
2584 * fixed some bugs revealed by Paul Dietz' test suite:
2585 ** READ-SEQUENCE now works on ECHO-STREAMs.
2586 ** RATIONALIZE works more according to its specification. (thanks
2589 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2590 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2591 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2592 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2593 should matter to you only if you rebind the printer control
2594 variables and then find you want different bindings in the
2595 debugger than in the ordinary execution of your program.)
2596 * The runtime build system has been tweaked to support building
2597 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2598 assembler and linker. (thanks to Nikodemus Siivola)
2599 * Unbound, undefined, undeclared variables now trigger full
2600 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2601 more often programmer error than deliberate exploitation of undefined
2603 * optimization: the hash algorithm for strings has changed to one
2604 that is less vulnerable to spurious collisions. (thanks to Juho
2606 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2607 needless bounds checking. (thanks to Juho Snellman)
2608 * optimization: implemented multiplication as a modular
2609 (UNSIGNED-BYTE 32) operation on the PPC backend.
2610 * fixed some bugs revealed by Paul Dietz' test suite:
2611 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2613 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2614 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2615 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2617 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2619 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2621 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2622 their output stream on EOF from read.
2623 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2624 have been read to end-of-file.
2625 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2627 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2628 description of determination of which consecutive characters
2630 ** Printing the "Space" character with escaping on now yields "#\\ ",
2631 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2632 ** Reading floating-point numbers with *READ-BASE* set to a number
2633 less than 10 works correctly.
2634 ** Reading floating-point numbers with *READ-BASE* set to a number
2635 more than 10 works correctly.
2636 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2637 the readtable currently in effect.
2639 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2640 * minor incompatible change: parsing of namestrings on a physical
2641 (Unix) host has changed; numbers after the final #\. in a
2642 namestring are no longer interpreted as a version field. This is
2643 intented to be largely invisible to the user, except that the
2644 meaning of the namestring "*.*.*" has changed: it now refers to a
2645 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2646 should usually be replaced by
2647 (make-pathname :name :wild :type :wild :version :wild)
2648 with the added benefit that this is more likely to be portable.
2649 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2650 option to OPEN now signals an error if the file being opened
2651 exists; this may have an impact on existing code.
2652 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2653 signals received, on the PowerPC platforms (both Linux and
2654 Darwin). (thanks to Pierre Mai for pointing out the location of
2656 * several fixes on OS X: The system now builds and runs cleanly on
2657 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2658 (thanks to Brian Mastenbrook)
2659 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2660 second-resolution: integer multiples of 1/3600 between -24 and 24.
2661 (thanks to Vincent Arkesteijn)
2662 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2663 type when called with 1 argument; PEEK-CHAR checked type of
2664 PEEK-TYPE only after having read first character from a
2665 stream. (reported by Peter Graves)
2666 * bug fix: the garbage collector now has much better locality
2667 behaviour, and in particular no longer treats all memory as being
2668 exhausted when many small objects point to each other in a deeply
2670 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2671 recognized as being TYPEP their class.
2672 * bug fix: the PUSHNEW documentation string has been corrected.
2673 (thanks to Vincent Arkesteijn)
2674 * bug fix: defaulting of the value for the last of an atypically
2675 large number of multiple values being bound was not being
2676 performed correctly on the Alpha or PPC platforms
2677 * optimization: implemented multiplication as a modular
2678 (UNSIGNED-BYTE 32) operation on the x86 backend.
2679 * optimization: SEARCH on simple-base-strings can now be open-coded.
2680 (see also contrib/compiler-extras.lisp for inspiration for
2681 teaching the compiler about the Boyer-Moore algorithm).
2682 * value, returned by MAX (and MIN) called with several EQUALP, but
2683 not EQL, arguments now does not depend on compiler settings.
2684 * fixed some bugs revealed by Paul Dietz' test suite:
2685 ** in stack analysis liveness information is propagated from
2686 non-local entry points.
2687 ** pathwise CAST removing failed when the CAST node did not start
2689 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2690 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2692 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2693 host is already defined.
2694 ** RENAME-FILE works on streams instead of signalling an internal
2696 ** PEEK-CHAR uses the current readtable when determining whether
2697 or not a character is whitespace.
2698 ** MERGE-PATHNAMES handles the case when the pathname does not
2699 specify a name while the default-pathname specifies a version.
2700 ** Pathnames now stand a better chance of respecting print/read
2702 ** Attempting to use standardized file system operators with a
2703 pathname with invalid :DIRECTORY components signals a
2705 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2707 ** DIRECTORY on logical pathnames is more correct.
2708 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2709 signal a TYPE-ERROR if their argument is not a stream.
2710 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2711 designator argument does not designate a stream.
2712 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2713 examining the synonym.
2714 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2716 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2717 element-type larger than ([UN]SIGNED-BYTE 32).
2719 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2720 * When built with the :SB-FUTEX feature, threaded builds now take
2721 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2722 for faster/more reliable mutex and condition variable support.
2723 * Incompatible change (but one you probably shouldn't have been using
2724 anyway): the interface and code for arbitrating between multiple
2725 threads in the same user session has been redesigned.
2726 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2727 error when called without an explicit environment argument.
2728 (thanks to Nikodemus Siivola)
2729 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2730 confused about their position. (thanks to Adam Warner and Gerd
2732 * bug fix: Pretty printing backquoted forms with unquotations in the
2733 argument list position of various code constructs such as LAMBDA
2734 now works correctly. (reported by Paul Dietz)
2735 * bug fix: Pretty printing unquotations no longer loses all
2736 stream position information.
2737 * optimization: performance of string output streams is now less
2738 poor for multiple small sequence writes.
2739 * optimization: performance of CSUBTYPEP in the presence of complex
2740 expressions involving CONS and NOT many times has been improved.
2741 (reported by Paul Dietz)
2742 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2744 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2745 streams for the REPL, for the debugger, and so on. (thanks to
2747 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2748 * fixed some bugs revealed by Paul Dietz' test suite:
2749 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2750 is ignored if it is too small, rather than propagating through
2751 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2752 ** extremely complex negations of CONS types were not being
2753 sufficiently canonicalized, leading to inconsistencies in
2755 ** VALUES tranformer lost derived type.
2757 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2758 * fixed a bootstrapping bug: the build process no longer assumes
2759 that the various BOOLE-related constants have the same value in
2760 host and target lisps. (noted by Paul Dietz' test suite on an
2761 SBCL binary built from CLISP)
2762 * The system can now be dynamically linked on the MIPS platform,
2763 which enables dynamic loading of foreign code from Lisp. (thanks
2764 to Ralf Baechle for discussions on the MIPS ABI)
2765 * The system now records debugging information for its own source
2766 files in a filesystem-position-independent manner, relative to
2767 the "SYS" logical host.
2768 * fixed a compiler bug: MV-LET convertion did not check references
2769 to the "max args" entry point. (reported by Brian Downing)
2770 * tweaked disassembly notes to be less confident about proclaiming
2771 some instruction as an LRA. (thanks to Brian Downing)
2772 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2773 now each have their own history, command character, and other
2774 characteristics. (thanks to David Lichteblau)
2775 * fixed some bugs revealed by Paul Dietz' test suite:
2776 ** compiler failure in compiling LOGAND expressions including a
2778 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2779 shift greater than 32.
2780 ** FLUSH-DEST did not mark blocks for type check regeneration.
2781 ** HANDLER-CASE failed to accept declarations in handler clauses
2782 in some circumstances.
2784 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2785 * New code in contrib/sb-introspect (still probably not entirely
2786 stable yet) provides some support for smart Lisp development
2787 environments like SLIME.
2788 * The conditions signalled for errors occurring when loading .fasl
2789 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2790 in a way which should help ASDF recover gracefully.
2791 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2792 stuff has been cleaned up. If you code contrib/ stuff, this might
2793 affect you, and you can look at contrib/README, contrib/STANDARDS,
2794 and/or the 0.8.4.27 diff to check.
2795 * In full calls the compiler now does not generate checks for declared
2796 argument types for all arguments.
2797 * various threading fixes
2798 ** and some experimental patches which didn't make it into
2799 the main tree for this release, but which are shipped in
2800 contrib/experimental-thread.patch as a possible fix for some
2801 failures (deadlock, spinning...) in GC-intensive multithreaded
2803 * fixed PPC build problem (source code incompatibility of different
2804 library versions): added offsetof() hackery which attempts to divine
2805 where glibc maintainers put uc_mcontext today
2806 * fixed bug 282: compiler does not trust type assertions while passing
2807 arguments to a full call.
2808 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2809 &OPTIONAL VALUES type parameter.
2810 * fix bug 214: algorithm for noting rejected templates is now more
2811 similar to that of template seletion. (also reported by rydis on
2813 * fixed bug 141b: printing backquoted information readably and prettily
2814 inserts a space where necessary.
2815 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2816 (CHARACTER 10) are now reported as errors, rather than propagated
2817 as unknown types. (reported by piso on #lisp)
2818 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2819 with values NIL and :ERROR. (thanks to Milan Zamazal)
2820 * fixed bug 191c: CLOS now does proper keyword argument checking as
2821 described in CLHS 7.6.5 and 7.6.5.1.
2822 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2823 longer raise an error; further, using a list as a for-as-arithmetic
2824 counter now raises a meaningful error.
2825 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2826 now understood by sequence creation functions such as MAKE-SEQUENCE
2828 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2829 a STRING-INPUT-STREAM.
2830 * compiler enhancement: SIGNUM is now better able to derive the type
2832 * type declarations inside WITH-SLOTS are checked. (reported by
2834 * fixed some bugs revealed by Paul Dietz' test suite:
2835 ** incorrect optimization of TRUNCATE for a positive first
2836 argument and negative second.
2837 ** compiler failure in let-convertion during flushing dead code.
2838 ** compiler failure while deriving type of TRUNCATE on an
2839 interval, containing 0.
2840 ** ASH of a negative bignum by a negative bignum count now returns
2842 ** intersection of CONS types now canonicalizes properly, fixing
2843 inconsistencies in SUBTYPEP.
2845 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2846 * incompatible change: The --disable-debugger command line
2847 option now clobbers the debugger at a more fundamental
2848 level, by redefining #'INVOKE-DEBUGGER instead of by
2849 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2850 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2851 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2852 enter the debugger REPL and then suffer recursive errors
2853 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2854 while under the new system, BREAK in --disable-debugger mode
2855 terminates the system just as an unhandled error would.
2856 * fixed compiler performance when processing loops with a step >1;
2857 * bug fix: DOCUMENTATION now retrieves generic function
2858 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2859 support has been systematized, and now supports the methods
2860 specified by ANSI, along with a default method and a method for
2861 slot documentation. (reported by Nathan Froyd)
2862 * bug fix: effective methods associated with a generic function are
2863 no longer cached over a change of that generic function's method
2864 combination. (reported by Andreas Fuchs)
2865 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2866 names a non-existent directory. (thanks to Andreas Fuchs)
2867 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2868 the PPC platform, lead to stack corruption; this has been fixed.
2869 (reported by Rainer Joswig)
2870 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2871 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2872 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2873 arithmetic in general, is now much more reliable on the PPC
2875 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2876 platform now returns the right answer.
2877 * optimization: restored some effective method precomputation in
2878 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2879 precomputation is now tunable.
2880 * optimization: compiler-internal data structure use has been
2881 reviewed, and changes have been made that should improve the
2882 performance of the compiler by about 20%.
2883 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2884 simple-base-strings and simple-bit-vectors is improved.
2885 * optimization: the optimization of 32-bit logical and arithmetic
2886 functions introduced in version 0.8.3 on the x86 has been
2887 implemented on the mips, ppc and sparc platforms; an
2888 implementation of the same facility, but for 64-bit arithmetic,
2889 has been added for the alpha.
2890 * microoptimization: the compiler is better able to make use of the
2891 x86 LEA instruction for multiplication by constants.
2892 * bug fix: in some situations compiler did not report usage of
2893 generic arithmetic in (SPEED 3) policy.
2894 * bug 145b fix: compiler used wrong type specifier while converting
2895 MEMBER-types to numeric.
2896 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2898 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2899 index argument now works properly on the Alpha platform.
2900 * bug fix: floating point exception treatment on the Alpha platform
2902 * bug fix: FILE-POSITION works much better on string input and
2903 output streams. (thanks to Nikodemus Siivola)
2904 * bug fix: many threading/garbage collection symptoms sorted.
2905 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2906 might be pseudo-atomic.
2907 * internal change: Stopping for GC is now done with signals not
2908 ptrace. GC is now done in whichever thread wanted it, instead of
2910 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2912 * bug fix: result form in DO is not contained in the implicit
2914 * incompatible change: ICR structure is changed; the value part of
2915 CONTINUATION is now called LVAR; corresponding functions are
2916 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2917 * added type deriver for ISQRT (thanks to Robert E. Brown).
2918 * bug fix: better support for loading from the command line when an
2919 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2921 * fixed some bugs revealed by Paul Dietz' test suite:
2922 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2923 ** ROUND and FROUND now give the right answer when given very
2924 small float arguments.
2925 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2927 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2928 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2929 ** LCM should return a non-negative integer.
2930 ** PARSE-INTEGER returned the index of a terminator instead of the
2931 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2932 ** PARSE-INTEGER returned an incorrect index being applied to a
2934 ** LCM with two arguments of 0 returns 0 rather than signalling
2936 ** unsigned addition of a 32-bit constant with the high bit set no
2937 longer causes an internal compiler error on the x86.
2938 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2939 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2940 with negative last argument.
2941 ** byte specifiers with zero size and position no longer cause
2942 an error during type derivation.
2943 ** bignum multiplication on the Alpha platform now returns the
2945 * porting: The system now builds on SuSE AMD64, although it still
2946 generates a 32-bit binary.
2947 * .fasl file incompatibility: The fasl file version number has
2948 been incremented (because of the changes to internal compiler
2949 data structures referred to above).
2951 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2952 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2953 more accurately, on the Darwin kernel running on PowerPC hardware.
2954 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2955 * Compiler code deletion notes now signal a condition of type
2956 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2957 an associated MUFFLE-WARNING restart.
2958 * The compiler now performs limited argument count validation of
2959 constant format strings in FORMAT, and where appropriate in ERROR,
2960 CERROR and WARN. (thanks to Gerd Moellmann)
2961 * New ASDF-INSTALL contrib can be used for automatic download and
2962 installation of third-party Lisp code from CCLAN or other sites
2964 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2965 which forces another thread to execute a function supplied by the
2967 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2968 now accept and act upon their :ELEMENT-TYPE keyword argument.
2969 (reported by Martin Atzmueller, Edi Weitz)
2970 * bug fix: FILE-POSITION now accepts position designators up to
2971 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2972 is the greater. (thanks to Patrik Nordebo)
2973 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2974 Kalle Olavi Niemitalo)
2975 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2976 printable. (reported by Eric Marsden)
2977 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2978 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2979 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2980 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2981 (thanks to Stig Sandoe)
2982 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2983 UNREAD-CHAR now correctly includes the unread character in the
2984 target sequence. (thanks to Gerd Moellmann)
2985 * bug fix in threaded builds: the system can now be suspended and
2986 resumed by shell job control with minimal disruption.
2987 * bug fixes in times and timezones >2038AD
2988 * better handling of "where is GNU make?" problem in build scripts
2989 (thanks to Nikodemus Siivola)
2990 * new optimization: inside a named function any reference to a
2991 function with the same name is considered to be a self-reference;
2992 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2993 optimization quality.
2994 * new optimization on x86: logical functions and + now have
2995 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2996 used when the result is truncated to 32 bits.
2997 * VALUES declaration is partially enabled.
2998 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2999 * fixed some bugs revealed by Paul Dietz' test suite:
3000 ** The system now obeys the constraint imposed by
3001 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3002 types form a lattice under type intersection.
3003 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3004 ** ASSOC now ignores NIL elements in an alist.
3005 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3006 and (1+ MOST-POSITIVE-FIXNUM) answers.
3007 ** The addition of a method with invalid qualifiers to a generic
3008 function does not cause an error to be signalled immediately;
3009 a warning is signalled, and the error is generated only on
3010 calling the generic function.
3011 * changed .fasl file version number, in part to add type codes for
3012 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3013 obscure ANSI requirements
3015 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3016 * fixed bug 148: failure to inline-expand a local function left
3017 garbage, confusing the compiler.
3018 * fixed bugs 3cd: structure slot readers perform type check if the
3019 slot can have an invalid value (i.e. it is either not initialized
3020 or can be written with a less specific slot writer).
3021 * bug fix: the compiler now traps array references to elements off
3022 the end of an array; previously, the bounds checking in some
3023 circumstances could go off-by-one.
3024 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3026 * type declarations for array element types now obey the description
3027 on the CLHS page "Declaration TYPE", as per discussions on
3028 sbcl-help around 2003-05-08. This means that a declaration
3029 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3030 declaration, all references to BAR will be asserted or assumed
3031 (with THE, so dependent on compiler policy) to involve objects of
3032 type FOO. Note that no such declaration is implied in
3033 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3034 * declared types of functions from the "Conditions"
3035 chapter. (reported by Paul Dietz)
3036 * bug fix: CERROR accepts a function as its first argument.
3037 * bug fix: NTH an NTHCDR accept a bignum as index
3038 arguments. (reported by Adam Warner)
3039 * optimization: character compare routines now optimize comparing
3040 against a constant character. (reported by Gilbert Baumann)
3041 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3042 argument now works properly on the MIPS platform.
3043 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3044 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3045 declared to have a functional type, does not cause an error
3047 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3048 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3049 * fixed bug: if last continuation of a deleted block has a
3050 destination, this destination should be deleted too. (reported by
3052 * fixed a bug in the bootstrap process: the host compiler's values
3053 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3054 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3055 test case from Patrik Nordebo)
3056 * improved the ability of the disassembler on the PPC platform to
3057 provide helpful disassembly notes.
3058 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3059 the class in more cases than previously.
3060 * bug fix: FILE-POSITION now understands :START and :END for
3061 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3062 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3063 8) data. (thanks to David Lichteblau)
3064 * bug fix: it is possible to add a method to a generic function
3065 without lambda list.
3066 * bug fix: reader failed to signal END-OF-FILE inside an
3067 object representation. (reported by Nikodemus Siivola)
3068 * fixed some bugs revealed by Paul Dietz' test suite:
3069 ** LAST and [N]BUTLAST should accept a bignum.
3070 ** condition slot accessors are methods.
3071 ** (VECTOR NIL) is a subtype of STRING.
3073 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3074 * minor incompatible change: some nonsensical specialized lambda
3075 lists (used in DEFMETHOD) which were previously ignored now signal
3077 * minor incompatible change: the system is now aware of the types of
3078 variables in the COMMON-LISP package, and will signal errors for
3079 most violations of these type constraints (where previously they
3080 were silently accepted).
3081 * minor incompatible change: COMPILE-FILE now uses the freedom
3082 afforded (ANSI 3.2.2.3) to use derived function types for
3083 functions defined in the same file. This also permits the system
3084 to warn on static type mismatches and function
3085 redefinition. (Currently it does not work with high DEBUG level.)
3086 * minor incompatible change: VALUES declaration is disabled.
3087 * When issuing notes, the compiler now signals a condition of type
3088 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3089 restart for use in user handlers. It is expected that the
3090 COMPILER-NOTE condition will eventually become a condition
3091 supertype to a hierarchy of note types, which will then be
3092 handleable in a similar fashion. However, at the moment, no such
3093 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3094 but it's an implementation detail, not a classification for the
3096 * Changes in type checking closed the following bugs:
3097 ** type checking of unused values (192b, 194d, 203);
3098 ** template selection based on unsafe type assertions (192c, 236);
3099 ** type checking in branches (194bc).
3100 * A short form of VALUES type specifier has ANSI meaning (it has
3101 increased the number of situations when SBCL cannot perform type
3103 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3104 keywords or constants is permissible.
3105 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3106 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3107 classes. (thanks to Antonio Martinez)
3108 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3109 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3110 argument to a pretty-print stream. Instead, it leaves any such
3111 operations to DESCRIBE-OBJECT methods.
3112 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3114 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3115 lambda lists. (thanks to David Lichteblau)
3116 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3117 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3118 (thanks to Gerd Moellmann)
3119 * fixed bug 246: increased compilation speed of long
3120 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3122 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3124 * DEFCONSTANT now throws a condition of type
3125 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3126 constant to a non-EQL value; CONTINUE and ABORT restarts
3127 respectively change and preserve the value.
3128 * fixed bug 63: The code walker, part of the implementation of CLOS,
3129 is now better at handling symbol macros.
3130 * bug fix: There is no longer an internal implementation type named
3131 CL:LENGTH. (reported by Raymond Toy)
3132 * bug fix: In macro-like defining macros/special operators the
3133 implicit block does not enclose the lambda list.
3134 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3135 enclosed in parentheses) are not suitable as type specifiers, and
3136 their use properly signals an error now.
3137 * bug fix: An argument count mismatch for a type specifier in code
3138 being compiled no longer causes an unhandled error at compile
3139 time, but signals a compile-time warning.
3140 * fixed simple vector readable printing
3141 * bug fix: DESCRIBE takes more care over whether the class
3142 precedence list slot of a class is bound before accessing it.
3143 (reported by Markus Krummenacker)
3144 * bug fix: FORMATTER can successfully compile pretty-printer format
3145 strings which use variants of the ~* directive inside.
3146 * bug fix: SEARCH now applies its TEST predicate to the elements of
3147 the arguments in the correct order. (thanks to Wolfhard Buss)
3148 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3149 in type inference. (thanks to Robert E. Brown)
3150 * bug fix: Reading in symbols with an explicit package name of ""
3151 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3152 * fixed some bugs revealed by Paul Dietz' test suite:
3153 ** NIL is now allowed as a structure slot name.
3154 ** Arbitrary numbers, not just REALs, are allowed in certain
3155 circumstances in LOOP for-as-arithmetic clauses.
3156 ** Multiple class redefinitions before slot access no longer
3157 causes a type error.
3158 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3159 association between the name and a class.
3160 ** Generic functions with non-standard method-combination and over
3161 five methods all of which return constants no longer return NIL
3162 after the first few invocations. (thanks to Gerd Moellmann)
3163 ** CALL-NEXT-METHOD with no arguments now passes the original
3164 values of the arguments, even in the presence of assignment.
3165 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3167 ** DISASSEMBLE works with closures and funcallable instances.
3168 ** ADD-METHOD now returns the generic function, not the new method.
3169 ** FIND-METHOD signals an error if the lengths of the specializers
3170 is incompatible with the generic function, even if the ERRORP
3172 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3173 which its argument is a member.
3174 ** DEFCLASS only redefines the class named by its class-name
3175 argument if that name is the proper name of the class;
3176 otherwise, it creates a new class.
3177 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3178 of the UNBOUND-SLOT condition to the name of the slot.
3179 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3180 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3181 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3182 SLOT-MAKUNBOUND in the specified fashion.
3184 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3185 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3186 cross-compilation host. As a consequence, we can now bootstrap our
3187 way up to SBCL starting with a bare gcc toolchain and human-readable
3188 source code (first the source to CLISP, then the source to SBCL).
3189 * A contributed module containing a partial implementation of the
3190 simple-streams interface has been included. (thanks to Rudi
3192 * A contributed module implementing the RFC1321 Message Digest
3193 Algorithm, known as MD5, has been included.
3194 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3195 no longer has any effect, as the code controlled by this feature
3196 has been deleted. (As far as we know, no-one has ever built using
3197 this feature, and its semantics were confused in any case).
3198 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3199 work on conditions (as required by the ANSI specification),
3200 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3201 expected behaviour on conditions. Users should note, however,
3202 that such behaviour is not required by the ANSI specification,
3203 and so use of this behaviour may render their code unportable.
3204 * fixed some bugs revealed by Paul Dietz' test suite:
3205 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3207 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3208 ** SXHASH on condition objects no longer returns NIL.
3209 ** :ALLOCATION :CLASS slots are better treated; their values are
3210 updated on class redefinition, and initforms inherited from
3211 superclasses are applied.
3212 ** REMOVE-METHOD returns its generic function argument even when
3213 no method was removed.
3214 ** SHARED-INITIALIZE now initializes the values of the requested
3215 slots, including those with :ALLOCATION :CLASS.
3216 ** ALLOCATE-INSTANCE now works on structure classes defined via
3217 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3219 ** SLOT-EXISTS-P now works on conditions, as well as structures
3221 ** MAKE-LOAD-FORM now has the required methods on
3222 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3223 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3224 keyword, and now implements the SLOT-NAMES argument.
3225 ** methods with &OPTIONAL arguments no longer allow too many
3226 arguments to be passed in the call without error.
3227 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3228 option is consistent with the required arguments of the generic
3229 function lambda list.
3230 * bug fix: REQUIRE accepts a string designator. (Thanks to
3232 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3233 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3234 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3235 * bug fix: The compiler now checks for duplicated variables in macro
3237 * bug fix: SETQ on globals returns the correct value.
3238 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3239 not a COMPILER-ERROR (followed by some other strange error on
3240 choosing the CONTINUE restart).
3241 * bug fix: make.sh and friends are now more consistent in the way that
3242 they look for GNU "make".
3244 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3245 * experimental native threads support (on x86 Linux >=2.4 only).
3246 This is not compiled in by default: you need to add :SB-THREAD to
3247 the target features. See the "Beyond ANSI" chapter of the manual
3249 * fix for longstanding nonANSIism: The old distinction between
3250 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3251 The return value from CL:FIND-CLASS is now a CLOS class, and
3252 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3253 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3254 * An interface to the MetaObject Protocol, as described in Kiczales,
3255 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3256 MIT Press, 1991, is available from the SB-MOP package.
3257 * incompatible change: the SB-PCL package should now be considered
3258 a private implementation detail, and no longer a semi-private MOP
3260 * minor incompatible change: due to rearrangement for threads, the
3261 control stack and binding stack are now allocated at arbitrary
3262 addresses instead of being hardcoded per-port. Users affected by
3263 this probably have to be doing advanced things with shared
3264 libraries, and will know who they are.
3265 * minor incompatible change: Previously, all --eval forms used were
3266 processed with READ before any of them were processed with EVAL.
3267 Now each --eval form is processed with both READ and EVAL before
3268 the next --eval form is processed. (Thus package operations like
3269 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3270 work as the user might reasonably expect.)
3271 * minor incompatible change: *STANDARD-INPUT* is now only an
3272 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3274 * minor incompatible change: Y-OR-N-P is now character-oriented,
3275 not line oriented. Also, YES-OR-NO-P now works without errors.
3276 (thanks to Antonio Martinez)
3277 * sb-aclrepl module improvements: an integrated inspector, added
3278 repl features, and a bug fix to :trace command.
3279 * Known functions, which cannot be open coded by the backend, are
3280 considered to be able to check types of their arguments. (fixing
3281 a bug report by Nathan J. Froyd)
3282 * fixed a bug in computing method discriminating functions: It is
3283 now possible to define methods specialized on classes which have
3284 forward-referenced superclasses. (thanks to Gerd Moellmann)
3285 * fixed evaluation order in optional entries (reported by Gilbert
3287 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3288 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3289 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3290 required-by-AMOP NAME argument, as well as CLASS and
3291 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3292 * fixed bug 20: DEFMETHOD can define methods using names that are
3293 not the proper names of classes to designate class specializers.
3294 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3295 Unix file descriptors, instead of blowing up. (thanks to Antonio
3297 * Garbage collection refactoring: user-visible change is that a
3298 call to the GC function during WITHOUT-GCING will not do garbage
3299 collection until the end of the WITHOUT-GCING. If you were doing
3300 this you were probably losing anyway.
3301 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3302 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3303 TYPEP the latter but not the former.
3304 * The compiler issues a full WARNING for calls to undefined functions
3305 with names from the CL package.
3306 * MAP-INTO for a vector destination is open coded. (reported by
3307 Brian Downing on c.l.l)
3308 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3309 documentation string.
3310 * fixed some bugs revealed by Paul Dietz' test suite:
3311 ** COPY-ALIST now signals an error if its argument is a dotted
3313 ** Condition slots are now accessed more correctly in the presence
3314 of multiple initargs for a given slot.
3315 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3316 exclude restarts of the same name associated with a different
3318 ** DEFCLASS of forward-referenced classes with another
3319 forward-referenced class in the superclasses list no longer
3321 ** Condition slots are now initialized once each, not multiple
3322 times. (thanks to Gerd Moellmann)
3323 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3325 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3326 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3327 arguments contain duplicated elements.
3328 ** RESTART-CASE understands local macros.
3329 ** RESTART-CASE associates exactly its own restarts with a condition.
3330 ** ENDP in safe mode checks its argument to be of type LIST.
3331 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3332 in question is unbound.
3333 ** Optimized MAKE-INSTANCE functions no longer cause internal
3334 assertion failures in the presence of duplicate initargs.
3335 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3336 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3337 propagated even in the ctor optimized implementation of
3339 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3341 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3342 * a better implementation of SXHASH on (simple) bit vectors,
3343 measured both in execution speed and in distribution of results
3344 over the positive fixnums, has been installed. Likewise, a better
3345 implementation of EQUAL for simple bit vectors is now available.
3346 * fixed CEILING optimization for a divisor of form 2^k.
3347 * fixed bug 240 (emitting extra style warnings "using the lexical
3348 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3349 by Antonio Martinez)
3350 * fixed SXHASH, giving different results for NIL depending on type
3351 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3352 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3353 variable. (found by Rolf Wester)
3354 * SBCL does not ignore type declarations for special
3355 variables. (reported by rif on c.l.l 2003-03-05)
3356 * some bug fixes in contrib/sb-aclrepl/
3357 * fixed some bugs revealed by Paul Dietz' test suite:
3358 ** a bug in the CONS type specifier, whereby the CAR and CDR
3359 types got intertwined, has been fixed;
3360 ** the type system is now able to reason about the interaction
3361 between INTEGER and RATIO types more completely;
3362 ** APPEND, [N]REVERSE and NRECONC check that those their
3363 arguments, which must be proper lists, are really so;
3364 ** An array specialized to be unable to hold elements has been
3365 implemented, as required -- yes, really -- by ANSI;
3366 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3367 on malformed property lists;
3369 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3370 * incompatible packaging change: in line with Unix convention,
3371 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3372 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3373 * REQUIRE and PROVIDE are now optionally capable of doing something
3374 useful. See the documentation string for REQUIRE.
3375 * infrastructure for a managed SBCL contrib system: contributed
3376 modules in this release include:
3377 ** the ASDF system definition facility;
3378 ** an interface to the BSD Sockets API;
3379 ** an ACL-like convenience interface to the repl;
3380 (thanks to Kevin Rosenberg)
3381 ** an implementation of ROTATE-BYTE, with efficient implementation
3383 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3384 gives a closer approximation to the right answer than previously.
3385 (thanks to Raymond Toy)
3386 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3387 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3388 optional environment arguments, as required by ANSI.
3389 * fixed bugs in other functions taking environment objects, allowing
3390 calls with an explicit NIL environment argument to be compiled
3392 * fixed bug 228: primary return values from
3393 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3394 COMPILE or FUNCTION.
3395 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3396 :TYPE will no longer signal errors on innocuous objects.
3397 * fixed bug 231b: SETQ is better at respecting type declarations in
3398 the lexical environment.
3399 * fixed a bug in DEFCLASS: classes named by symbols with no or
3400 unprintable packages can now be defined.
3401 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3402 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3403 * fixed compiler failure related to checking types of functions.
3404 (reported by Robert E. Brown)
3405 * the compiler is now much more consistent in its error-checking
3406 treatment of bounding index arguments to sequence functions: in
3407 (SAFETY 3) code, errors will be signalled in almost all cases if
3408 invalid sequence bounding indices are passed to functions defined
3409 by ANSI to operate on sequences.
3410 * fixed a bug in the build procedure: documentation of SBCL-specific
3411 packages is now preserved and available in the final Lisp image.
3412 * lifted FDEFINITION lookup out of loops in the implementation of
3413 many list operations. (thanks to Robert E. Brown)
3414 * fixed a bug in the reader: the #n# reader macro now works for
3415 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3416 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3417 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3418 E. Brown and Tony Martinez respectively)
3419 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3420 SLOT-BOUNDP: in particular, it is now able to optimize them much
3421 better, and is now not vulnerable to having packages renamed.
3422 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3423 always called when a slot is not present in an instance. (thanks
3425 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3426 longer signal an error on unreading a character following EOF on
3427 the previous constituent stream. (thanks to Tony Martinez)
3428 * fixed some bugs revealed by Paul Dietz' test suite:
3429 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3430 not just nonnegative fixnums;
3431 ** the logical bit-array operators such as BIT-AND now accept an
3432 explicit NIL for their "opt-arg" argument (to indicate a
3433 freshly-consed result bit-array);
3434 ** ELT now signals an error on an invalid sequence index in safe
3436 ** the type system is now cleverer about negations of numeric
3437 types, and consequently understands the BIGNUM and RATIO types
3439 ** the type system is now cleverer about the interaction between
3440 INTEGER and RATIO types: while bugs still remain, many more
3441 cases are accurately computed;
3442 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3443 if it is in the last clause;
3444 ** CONSTANTLY now correctly returns a side-effect-free function in
3446 ** DECLARE is no longer treated as a special-operator; in
3447 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3448 * incremented fasl file version number due to the change in the
3449 DEFSTRUCT-SLOT-DESCRIPTION structure.
3451 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3452 * minor incompatible change: code processed by the "interpreter" or
3453 EVAL now has a compilation optimization policy of (DEBUG 2)
3454 (changed from (DEBUG 1)) to improve debuggability of interactive
3455 development, and to allow the use of the debug RETURN command in
3457 * an experimental implementation of the RETURN command for the
3458 debugger has been included. (thanks to Frederik Kuivinen)
3459 * fixed bug 62: constraints were not propagated into a loop.
3460 * fixed bug in embedded calls of SORT (reported and investigated by
3462 * fixed some bugs revealed by Paul Dietz' test suite:
3463 ** printing and reading of arrays with some dimensions having
3464 length 0 (thanks to Gerd Moellmann);
3465 ** BOA constructor with &AUX argument without a default value does
3466 not cause a type error;
3467 ** CONSTANTP now returns true for all self-evaluating objects.
3469 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3470 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3471 accessors that are related by inheritance, as specified in the
3472 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3473 Valtteri Vuorikoski)
3474 * The compiler is now able to inline functions that were defined in
3475 a complex lexical environment (e.g. inside a MACROLET).
3476 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3478 * Support for the upcoming FreeBSD-5.0 release has been included.
3479 (thanks to Dag-Erling Smorgrav)
3480 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3481 effect when it is not in a toplevel context.
3482 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3483 stand a better chance of being correct. (thanks to Gerd
3485 * fixed bug in COERCE, which now signals an error on coercing a
3486 rational to a bounded real type which excludes the expected
3488 * The compiler is now able to derive types more accurately from the
3489 COERCE and COMPILE functions.
3490 * fixed bug 223: functional binding is considered to be constant
3491 only for symbols in the CL package.
3492 * fixed bug 231: SETQ did not check the type of a variable being set
3493 (reported by Robert E. Brown)
3494 * A new optimization for MAKE-INSTANCE has been included, fixing
3495 various bugs (including relating to :ALLOCATION :CLASS slots and
3496 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3498 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3499 ** As required by ANSI, LOOP now disallows anonymous collection
3500 clauses such as COLLECT I in conjunction with aggregate boolean
3501 clauses such as THEREIS (= I 1);
3502 ** LOOP now signals an error when any variable is reused in the
3503 same loop (including the potentially useful construct analogous
3504 to WITH A = 1 WITH A = (1+ A);
3505 ** IT is only a special loop symbol within the first clause of a
3506 conditional loop clause;
3507 ** LOOP with a typed iteration variable over a hashtable now
3508 signals a type error iff it should.
3509 * fixed some other bugs revealed by Paul Dietz' test suite:
3510 ** FILE-STREAM now names the class previously known as FD-STREAM;
3511 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3512 argument) no longer signals an error;
3513 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3514 of the slot symbol, rather than using the current package
3515 ((:CONC-NAME "") continues to intern the slot's name in the
3517 * incremented fasl file version number, because of the incompatible
3518 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3519 of the new implementation of DEFINE-COMPILER-MACRO.
3521 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3522 * Support for building SBCL for MIPS platforms running in
3523 little-endian mode has now been checked in, and basic
3524 functionality on said platforms verified.
3525 * minor incompatible change: PCL now records the pathname of a file
3526 in which methods and the like are defined, rather than its
3528 * minor incompatible change: TRUENAME now considers the truename of
3529 a file naming a directory to be the pathname with :DIRECTORY
3530 component indicating that directory.
3531 * minor incompatible change: a NAMED clause in the extended form of
3532 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3533 reason for the previous behaviour is unclear.
3534 * more systematization and improvement of CLOS and MOP conformance
3535 in PCL (thanks to Gerd Moellman and Pierre Mai):
3536 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3538 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3539 primary methods with no specializers;
3540 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3542 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3543 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3544 FORWARD-REFERENCED-CLASSes; error reporting on
3545 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3547 ** SXHASH on CLOS instances now uses a slot internal to the
3548 instance to return different numbers on distinct instances,
3549 while preserving the same return value through invocations of
3551 ** DEFMETHOD signals errors when methods with longer incongruent
3552 lambda lists are added to generic functions;
3553 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3554 CLASS, as specified in AMOP;
3555 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3556 on the order returned by the primary method for classes of
3557 class STANDARD-CLASS;
3558 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3559 * fixed some bugs shown by Paul Dietz' test suite:
3560 ** DOLIST puts its body in TAGBODY;
3561 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3563 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3564 value producing form;
3565 ** if more variables are given to PROGV than values, extra
3566 variables are bound and made to have no value;
3567 ** NSUBSTITUTE on list arguments gets the right answer with
3569 ** ELT signals an error of type TYPE-ERROR when the index argument
3570 is not a valid sequence index;
3571 ** LOOP signals (at macroexpansion time) an error of type
3572 PROGRAM-ERROR when duplicate variable names are found;
3573 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3574 ** FUNCALL of special-operators now cause an error of type
3576 ** PSETQ now works as required in the presence of side-effecting
3577 symbol-macro places;
3578 ** NCONC accepts any object as its last argument;
3579 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3581 ** loop-for-as-package does not require a package to be explicitely
3583 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3585 * fixed bug 166: compiler preserves "there is a way to go"
3586 invariant when deleting code.
3587 * fixed bug 172: macro lambda lists with required arguments after
3588 &REST arguments now cause an error to be signalled. (thanks to
3590 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3591 bug. (thanks to Matthew Danish)
3592 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3594 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3595 arguments are lexically rebound. (thanks to Gerd Moellmann and
3597 * fixed bug 194: error messages are now more informative when there
3598 is no primary method applicable in a call to a generic
3599 function. (thanks to Gerd Moellmann)
3600 * fixed bug in command line argument checking (thanks to Julian
3602 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3603 (thanks to Matthew Danish)
3604 * incremented fasl file version number, because of the
3605 SXHASH-related changes in the layout of CLOS data structures
3607 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3608 * minor incompatible change: The runtime (the Unix executable named
3609 "sbcl") is now much pickier about the .core files it will load.
3610 Essentially it now requires .core files to descend from the same
3611 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3612 as the runtime does. (The intent is to prevent the crashes which
3613 can occur, and which can even be reported as mysterious failures,
3614 when people patch the sources or change the build parameters
3615 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3616 sbcl and .core files.)
3617 * fixed bug: VALUES-LIST is no longer optimized away.
3618 * fixed bug 142: The FFI conversion of C string values to Lisp
3619 string values no longer conses excessively. (thanks to Nathan
3620 Froyd porting Raymond Toy's fix to CMU CL)
3621 * began to systematize and improve MOP conformance in PCL (thanks to
3622 Nathan Froyd, Gerd Moellman and Pierre Mai):
3623 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3625 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3626 ** FINALIZE-INHERITANCE is now called on class finalization;
3627 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3628 argument precedence order.
3629 * fixed bug 202: The compiler no longer fails on functions whose
3630 derived types contradict their declared type.
3631 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3632 so it can be non-toplevel.
3633 * The fasl file version number has changed (because of the new
3634 implementation of DEFMACRO).
3635 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3636 safe code, that any length requirement by their type-specifier
3637 argument is valid. The exceptions to this are described in bug
3639 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3640 functions now check the types of their inputs as required by ANSI.
3641 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3642 introduced symbol is DECLAREd to be SPECIAL.
3643 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3644 * fixed bug: :COUNT argument to sequence functions may be negative
3645 * fixed bug: body of DO-SYMBOLS may contain declarations
3646 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3647 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3648 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3649 symbol macro only once
3650 * fixed printing of call frame when argument list is unavailable
3651 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3652 * compiler no longer signals WARNING on unknown keyword
3655 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3656 * A beta-quality port to the mips architecture running Linux,
3657 based on the old CMUCL backend, has been made. It has been tested
3658 on a big-endian kernel, and works sufficiently well to be able to
3659 rebuild itself; it has not been tested in little-endian mode.
3660 * fixed an inconsistency between gencgc.c and purify.c which made
3661 dumping/loading .core files unreliable
3662 * fixed bug 120a: The compiler now deals correctly with IFs where
3663 the consequent is the same as the alternative, instead of
3664 misderiving the return type. (thanks to Alexey Dejneka)
3665 * fixed bug 113: Logical pathnames are now dumpable (the logical
3666 host is resolved at load-time, throwing an error if it is not
3668 * fixed bug 174: FORMAT's error message is slightly clearer when a
3669 non-printing character is used in a format directive.
3670 * fixed several bugs in compiler checking of type declarations, i.e.
3671 violations of the Python "declarations are assertions" principle
3672 (thanks to Alexey Dejneka)
3673 * fixed several bugs in PCL's error checking (thanks to Gerd
3675 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3677 * fixed bug in compilation of functions as first class values
3678 (thanks to Antonio Martinez-Shotton)
3679 * The compiler's handling TYPE-ERRORs which it can prove will
3680 inevitably happen at runtime has been cleaned up and corrected
3681 in several ways. (thanks to Alexey Dejneka)
3682 * improved argument type checking for various basic arithmetic
3683 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3684 lavished on them in the past that they can be compiled in many
3685 ways in different special cases
3686 * fixed bug 181: compiler checks validity of user supplied type
3688 * cleaned up code flushing in optimization: Function calls which
3689 should signal errors for safety purposes (e.g. which ANSI says
3690 should signal errors when their arguments are of incorrect type)
3691 are no longer optimized away.
3692 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3693 * incremented fasl file version number, because changes in the
3694 implementation of sequence functions like COERCE caused
3695 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3696 in old inline expansions) to become undefined. (Actually these
3697 changes were later undone, so we might very well be binary
3698 compatible with 0.7.7 after all, but leaving the version number
3699 incremented seemed like the simplest and most conservative
3702 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3703 * An alpha-quality port to the parisc architecture running Linux,
3704 based on the old CMUCL backend, has been made. This, even more so
3705 than the other backends, should be considered still a work in
3706 progress; known problems include that the Linux kernel in 64-bit
3707 mode does not propagate the correct sigcontext structure to
3708 userspace, and consequently SBCL on a parisc64 kernel will not
3710 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3711 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3712 suppressed.) Also now that the compiler is looking at declarations
3713 in the environment, it checks optimization declarations as well,
3714 and suppresses inlining when (> DEBUG SPEED).
3715 * More fixes have been made to treatment of floating point exception
3716 treatment and other Unix signals. In particular, floating point
3717 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3718 * The detection and handling of control stack exhaustion (infinite
3719 or very deeply nested recursion) has changed. Stack exhaustion
3720 detection is now done by write-protecting pages at the OS level
3721 and applies at all optimization settings; when found, a
3722 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3723 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3724 be caught using IGNORE-ERRORS.
3725 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3726 correctly when transforming recursive LABELS functions to LETs.
3727 (thanks to Alexey Dejneka)
3728 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3729 that are names of constants or global variables.
3730 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3731 alien routines with docstrings.
3732 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3733 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3735 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3736 (thanks to Eric Marsden)
3737 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3738 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3739 * Bug fix: The SPARC backend can now compile functions involving
3740 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3741 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3742 to a functions expecting a PATHNAME-DESIGNATOR.
3743 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3744 lambda lists. (thanks to Alexey Dejneka)
3745 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3746 functions so that EXPORTing the name of the class doesn't cause
3747 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3748 to Antonio Martinez for reporting this)
3749 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3750 constant-folded without failing an assertion. (thanks to Einar
3751 Floystad Dorum for reporting this)
3752 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3753 types are now dealt with more correctly by the compiler.
3754 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3755 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3756 behaviour analogous to RENAME-FILE. This puts its behaviour more
3757 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3759 * The fasl file version number has changed again. (because of the
3760 bug fix involving the names of PCL MAKE-INSTANCE functions)
3762 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3763 * bug fix: Floating point exceptions are treated much more
3764 consistently on the x86/Linux and PPC/Linux platforms.
3765 * Array initialization with :INITIAL-ELEMENT is now much faster for
3766 cases when the compiler cannot open code the array creation, but
3767 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3768 array accesses have also seen a speed increase.
3769 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3770 specified. (This was at the root of some bad interactions between
3771 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3773 * bug fix: Internal error arguments for undefined functions are now
3774 computed correctly on the PPC/Linux platform.
3775 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3776 Raymond Toy's patch for CMU CL)
3777 * Support for the Solaris 9 operating environment has been included
3778 (thanks to Daniel Merritt)
3779 * A very ugly but hopefully complete draft of the missing FFI chapter
3780 of the manual has been created by reformatting the corresponding
3781 CMU CL manual chapter into (currently very ugly and incoherent)
3782 DocBook and bringing it up to date for SBCL behavior. Thus, the
3783 manual is now essentially complete, at least by my extreme
3784 once-and-only-once standards, whereby it's acceptable to refer to
3785 the doc strings of SB-EXT functions as the primary documentation.
3786 * The fasl file version number has changed again, due to cleanup of
3787 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3788 is no longer a static symbol.)
3790 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3791 * SBCL now builds with OpenMCL (version 0.12) as the
3792 cross-compilation host; also, more progress has been made toward
3793 bootstrapping under CLISP.
3794 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3796 * bug 158 fixed: The compiler can now deal with integer loop
3797 increments different from 1; fixing this turned out also to fix
3799 * bug 169 fixed: no more bogus warnings about using lexical bindings
3800 despite the presence of perfectly good SPECIAL declarations (thanks
3801 to David Lichteblau)
3802 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3803 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3804 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3806 * bug 180 fixed: Method combination specifications no longer ignore
3807 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3808 * bug fix: Structure type predicate functions now check their argument
3809 count as they should.
3810 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3811 correctly. (thanks to Pierre Mai)
3812 * minor incompatible change: The --noprogrammer option is deprecated
3813 in favor of the new --disable-debugger option, which is very similar.
3814 (The major difference is that it takes effect at a slightly different
3815 time at startup, causing handling of errors in --sysinit and
3816 --userinit files will be affected differently.) The
3817 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3818 been added to allow this functionality to be controlled from ordinary
3819 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3820 maintainers, who might want to run non-interactive scripts to
3821 build SBCL cores which will later be used interactively.)
3822 * minor incompatible change: The LOAD function no longer, when given
3823 a wild pathname to load, loads all files matching that pathname.
3824 Instead, an error of type FILE-ERROR is signalled.
3826 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3827 * bug 147 fixed: The compiler preserves its block link/count
3828 invariants more correctly now so that it doesn't crash. (thanks
3830 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3832 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3833 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3834 no-value-for-this-character as NIL (as specified by ANSI).
3835 * HOST-NAMESTRING on physical pathnames now returns a string that is
3836 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3837 (thanks to Christophe Rhodes)
3838 * The Alpha port handles icache flushing more correctly. (thanks to
3840 * More progress has been made toward bootstrapping under CLISP. (thanks
3841 to Christophe Rhodes)
3842 * The fasl file format has changed again, because dynamic loading
3843 on OpenBSD (which has non-ELF object files) motivated some cleanups
3844 in the way that foreign symbols are transformed and passed around.
3845 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3846 is no longer treated as whitespace by the reader, but instead as
3847 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3848 |A
\7fB|, instead of A as it used to.
3850 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3851 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3852 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3853 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3854 this as of 0.7.1.45, but was left out of the previous news section
3855 (thanks to Dan Barlow)
3856 * SBCL now runs on the Solaris operating system on SPARC architectures
3857 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3858 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3859 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3860 * SPARC backend cleanups, allowing builds of cores optimized for V8
3861 and V9 SPARCS, and also emission of code targeted to a particular
3862 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3864 * SBCL is closer to bootstrapping under CLISP, thanks to various
3865 fixes by Christophe Rhodes.
3866 * The fasl file format has changed again, to allow the compiler's
3867 INFO database to support symbol macros.
3868 * The user manual (in doc/) is formatted into HTML more nicely.
3869 (thanks to coreythomas)
3870 * The system is smarter about SUBTYPEP relationships, especially
3871 those involving NOT types (including types such as ATOM which are
3872 represented internally using NOT types). Thus SUBTYPEP is less
3873 likely to return (VALUES NIL NIL) in general, and in particular
3874 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3876 * The fasl file format has changed again, because the internal
3877 representation of types now includes a new slot to support the new
3878 SUBTYPEP-of-NOT-types logic.
3879 * (not a change in the main branch of SBCL, but a related prototype
3880 which can hopefully be merged into the main branch of SBCL in the
3881 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3882 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3883 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3884 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3885 dispatch macro character combinations. (thanks to Alexey Dejneka)
3886 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3887 that superficially look like logical namestrings correctly.
3888 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3890 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3891 default supplied-p) for &optional and &key arguments. (thanks to
3894 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3895 * incompatible change: The compiler is now less aggressive about
3896 tail call optimization, doing it only when (> SPACE DEBUG) or
3897 (> SPEED DEBUG). (This is an incompatible change because there are
3898 programs which relied on the old CMU-CL-style behavior to optimize
3899 away their unbounded recursion which will now die of stack overflow.)
3900 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3901 for non-GENCGC systems has been increased to 20M (since that
3902 seems much closer to the likely performance optimum for modern
3903 systems than the old 4M value was)
3904 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3905 and *DEBUG-PRINT-LEVEL*
3906 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3907 of CMU CL's support for SPARC, and various endianness and other
3908 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3909 * new syntactic sugar for the Unix command line: --load foo.bar is now
3910 an alternate notation for --eval '(load "foo.bar")'.
3912 ** The system now detects stack overflow and handles it gracefully,
3913 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3914 optimization settings. (This is a good thing in general, and
3915 its introduction in this version should be particularly timely
3916 for anyone whose code fails because of suppression of tail
3918 ** The system now hunts for the C variable "environ" in a more
3919 devious way, to avoid segfaults when the C library version differs
3920 between compile time and run time. (thanks to Christophe Rhodes)
3921 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3922 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3923 ** The compiler no longer issues bogus style warnings for undefined
3924 classes in the same source file as the DEFCLASSes which defined
3925 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3927 ** fixes in CONDITION class precedence list for undefined function
3928 errors (thanks to Alexei Dejneka)
3929 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3930 correctly. (thanks to Dan Barlow)
3931 ** portability fixes aiming at bootstrapping under CLISP (thanks
3932 to Dave McDonald and Christophe Rhodes)
3933 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3934 ** fixes in type translation and and type inference (thanks to
3936 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3937 ** various fixes in the new ports (thanks to Dan Barlow)
3938 * several changes related to debugging:
3939 ** suppression of tail recursion, as noted above
3940 ** stack overflow detection, as noted above
3941 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3942 is now the default. (For some time encapsulation has been more
3943 reliable than the breakpoint-based :ENCAPSULATE NIL
3944 implementation, at least on X86 systems; and I just noticed that
3945 encapsulation also seems closer to the spirit of the ANSI
3948 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3950 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3951 up properly again. (There was a packaging bug in 0.7.0 which
3952 left their definitions in SB-SYS::LOAD-FOREIGN and
3953 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3954 vital for most things which interface to C-level interfaces,
3955 like extensions working with sockets or databases or
3956 Perl-compatible regexes or whatever, and the need to fix
3957 this bug is the main reason that 0.7.1 was released so
3959 ** DEFGENERIC is now choosier about the methods it redefines, so that
3960 reLOADing a previously-LOADed file containing DEFGENERICs does
3961 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3962 cycle now works as it should. (thanks to Alexey Dejneka)
3963 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3964 fixed by Christophe Rhodes. (He actually submitted this patch
3965 months ago, and I delayed until after 0.7.0.)
3966 ** Bug 111 (internal compiler confusion about runtime checks on
3967 FUNCTION types) was fixed by Alexey Dejneka.
3968 * Some internal cleanups (getting rid of variables which aren't
3969 needed now that the byte interpreter is gone) caused the fasl
3970 file format number to change again.
3972 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3973 * major incompatible change: The default fasl file extension, i.e. the
3974 default extension for files produced by COMPILE-FILE, has changed
3975 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3977 ** There are many changes in the implementation of the compiler.
3978 SBCL is now essentially a compiler-only implementation of ANSI
3979 Common Lisp. EVAL still "interprets" a few special cases, but
3980 almost all the interesting cases are handled by creating
3981 a LAMBDA expression, calling COMPILE on it, then calling
3982 FUNCALL on the result.
3983 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3984 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3985 Since the code is newer, there might still be some new bugs
3986 (though not as many as before Martin Atzmueller's fixes:-). But
3987 the new code is substantially simpler and clearer, and hopefully
3988 any remaining bugs will be simpler, less fundamental, and more
3989 fixable then the bugs in the old code.
3990 ** The revised compiler is still a little unsteady on its feet.
3992 *** The debugging information it produces (particularly the names
3993 of FUNCTION objects) is sometimes much less useful than what
3994 the old compiler produced.
3995 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3996 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3997 within a MACROLET) has been temporarily weakened.
3998 ** There are new compiler optimizations for various functions:
3999 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4000 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4001 *** the math functions TRUNCATE, FLOOR, and CEILING
4002 *** the function-of-all-trades COERCE
4003 Mostly these should be transparent, but there's one
4004 potentially-annoying problem (bug 117): when the compiler
4005 inline-expands a function and does type analysis on the result,
4006 it can create control paths which have type mismatches, and
4007 when it can't prove that those control paths aren't taken,
4008 it will issue WARNINGs about the type mismatches. This is
4009 a particular problem in practice for the new sequence functions.
4010 It's not clear how this should be fixed, and for now, a
4011 workaround is given in the entry for 117 in the BUGS file.
4012 ** (Because of the interaction between the two previous items --
4013 occasional inlining problems and new inline expansions -- some
4014 of the new sequence function optimizations won't really kick in
4015 completely until debugging information, and then inlining, are
4016 straightened out in some future version.)
4017 * minor incompatible changes:
4018 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4019 DIRECTORY no longer implicitly promotes NIL slots of its
4020 pathname argument to :WILD. In particular, when you ask for the
4021 contents of a directory (which you used to be able to do without
4022 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4023 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4024 ** changes in behavior that ANSI explicitly defines to be
4025 implementation dependent:
4026 *** The new compiler-only implementation still conforms with ANSI,
4027 but acts a little different than before. Besides the obvious
4028 changes in performance tradeoffs (that the cost per form passed
4029 to EVAL has gone up, and the cost per form executed by EVAL
4030 has gone down), the behavior of the system changes a little
4031 because there are no longer any interpreted function objects.
4032 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4033 e.g. doing COMPILE on the output of interactive DEFUN is
4035 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4037 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4038 has changed from (:CL) to NIL.
4039 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4040 e.g. #\Newline and #\Tab, don't have names specified in the
4041 ANSI Common Lisp standard, is now based on their ASCII symbolic
4042 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4043 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4044 are no longer used for output.
4045 ** changes in internal implementation constants:
4046 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4047 4 million. (If your application spends a lot of time GCing and
4048 you have a lot of RAM, you might want to experiment with
4049 increasing it even more.)
4050 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4051 However, almost all old code should still continue to work without
4052 immediate update, as SB-C-CALL is now a (deprecated) nickname
4054 ** Old operator names in the style DEF-FOO are now deprecated in
4055 favor of new corresponding names DEFINE-FOO, for consistency with
4056 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4057 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4058 internal symbols, but a few supported extensions like
4059 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4060 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4061 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4062 etc. as you get deeper into recursive calls to the debugger
4063 command loop, instead of the old "5]", "5]]", "5]]]"
4064 sequence. (I was motivated to do this when squabbles between
4065 ILISP and SBCL left me very deeply nested in the debugger. In the
4066 short term, this change will probably provoke more ILISP/SBCL
4067 squabbles, but hopefully it will be an improvement in the long run.)
4068 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4069 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4070 function, since declaiming return types involving aliens is
4071 (1) annoyingly messy to do by hand and (2) vital to efficient
4072 compilation of code which calls such functions.
4073 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4074 longer reexported by the SB-EXT package. They're solely useful
4075 for alien code, so it seems more logical that you should get
4076 them from the SB-ALIEN package, not in SB-EXT.
4077 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4078 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4079 features. Instead, the code that they used to control is always
4080 built into the system.
4081 * many other bug fixes
4082 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4083 advantage of the new EVAL-WHEN stuff and to clean them up in
4084 general, and they are now more ANSI-compliant in a number of
4085 ways. Martin Atzmueller is responsible for a lot of this.
4086 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4088 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4089 *** correct ERROR type for various file operations
4090 *** some fixes for Lisp streams
4091 *** DEFMETHOD syntax checking
4092 *** changing old weird representation of debug information as
4093 strings (which, among their other deficiencies, don't transform
4094 correctly when you rename packages, and don't change their
4095 print representation when you change things like *PACKAGE*
4096 and *PRINT-LENGTH*) to symbols and lists of symbols
4097 He also made several improvements and fixed several bugs in DESCRIBE.
4098 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4100 *** misbehavior of WRITE-STRING/WRITE-LINE
4101 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4102 and several other LOOP problems as well
4103 *** DIRECTORY when similar filenames are present
4104 *** DEFGENERIC with :METHOD options
4105 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4106 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4107 *** argument ordering in FIND with :TEST option
4108 *** mishandled package designator argument in APROPOS-LIST
4109 *** various problems in the backquote readmacro
4110 *** a bug in APROPOS
4111 *** probably some others that I'm not describing very well here,
4112 since the CVS log documents them by reference to sbcl-devel
4113 messages, and the SourceForge archives aren't working well.:-(
4114 ** Dan Barlow improved the Alpha port (and is making progress on the
4115 PPC port, for those of you who think different).
4116 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4117 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4118 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4119 continues to work on the SPARC port (for those of you in a position
4120 to look down upon our little PC-compatible boxes from a great height).
4121 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4122 and uses that copy, rather than the current dynamic value, when
4123 it's trying to decide whether to truncate output. Thus e.g.
4124 (let ((*print-lines* 50))
4125 (pprint-logical-block (stream nil)
4127 (let ((*print-lines* 8))
4128 (print (aref possiblybigthings i) stream)))))
4129 should now truncate the logical block only at 50 lines, instead of
4130 often truncating it at 8 lines, as it did before.
4131 * The doc/cmucl/ directory, containing old CMU CL documentation
4132 from the time of the fork, is no longer part of the base system.
4133 SourceForge has shut down its anonymous FTP service, and with it
4134 my original plan for distributing the old CMU CL documentation
4135 there. For now, if you need these files you can download an old
4136 SBCL source release and extract them from it.
4137 * The fasl file version number changed again, for dozens of reasons,
4138 some of which are apparent above.
4140 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4141 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4142 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4143 patch, so that DISASSEMBLE output is much nicer.
4144 * The code in the SB-PROFILE package now seems reasonably stable.
4145 I still haven't decided what the final interface should look like
4146 (I'd like PROFILE to interact cleanly with TRACE, since both
4147 facilities use function encapsulation) but if you have a need
4148 for profiling now, you can probably use it successfully with
4149 the current CMU-CL-style interface.
4150 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4151 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4152 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4153 link now returns the dangling link itself, and for similar
4154 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4155 link itself. (In these cases the old code signalled an error and
4156 looped endlessly, respectively.) Thus, DIRECTORY now works even
4157 in the presence of dangling and cyclic symbolic links.
4158 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4159 is now a supported extension again, since the consensus on
4160 sbcl-devel was that it can be useful for ordinary development
4161 work, not just for debugging SBCL itself.
4162 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4163 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4164 that currently-defined functions might be redefined later with
4165 different return types.
4166 * Hash tables can be printed readably, as inspired by CMU CL code
4167 of Eric Marsden and SBCL code of Martin Atzmueller.
4168 * better error handling in CLOS method combination, thanks to
4169 Martin Atzmueller porting Pierre Mai's CMU CL patches
4170 * more overflow fixes for >16Mbyte I/O buffers
4171 * A bug in READ has been fixed, so that now a single Ctrl-D
4172 character suffices to cause end-of-file on character streams.
4173 In particular, now you only need one Ctrl-D at the command
4174 line (not two) to exit SBCL.
4175 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4177 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4178 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4179 does the right thing.
4180 * The implementation of some type tests, especially for CONDITION
4181 types, is now tidier and maybe faster, due to CMU CL code
4182 originally by Douglas Crosher, ported by Martin Atzmueller.
4183 * Some math functions have been fixed, and there are new
4184 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4185 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4186 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4187 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4188 likely to be built into sbcl-0.7.0.)
4189 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4190 CL, ported to SBCL by Martin Atzmueller)
4191 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4192 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4193 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4194 * There's a new slam.sh hack to shorten the edit/compile/debug
4195 cycle for low-level changes to SBCL itself, and a new
4196 :SB-AFTER-XC-CORE target feature to control the generation of
4197 the after-xc.core file needed by slam.sh.
4198 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4199 COMPILE-FILE is no longer supported, so that now every function
4200 gets an entry point, so that block compilation looks a little
4201 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4202 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4203 returns the number of bytes consed since the system started,
4204 rather than the number consed since the first time the function
4205 was called. (The new definition parallels ANSI functions like
4206 CL:GET-INTERNAL-RUN-TIME.)
4207 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4208 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4209 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4210 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4211 * Fasl file version numbers are now independent of the target CPU,
4212 since historically most system changes which required version
4213 number changes have affected all CPUs equally. Similarly,
4214 the byte fasl file version is now equal to the ordinary
4217 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4218 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4219 is no longer recognized. I apologize for this, because it was
4220 listed in SB-EXT as a supported extension, but I found that
4221 its existing behavior was poorly specified, as well as incorrectly
4222 specified, and it looked like too much of a mess to straighten it
4223 out. I have enough on my hands trying to get ANSI stuff to work..
4224 * many patches ported from CMU CL by Martin Atzmueller, with
4225 half a dozen bug fixes in pretty-printing and the debugger, and
4226 half a dozen others elsewhere
4227 * fixed bug 13: Floating point infinities are now supported again.
4228 They might still be a little bit flaky, but thanks to bug reports
4229 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4230 as flaky as they were.
4231 * The --noprogrammer command line option is now supported. (Its
4232 behavior is slightly different in detail from what the old man
4233 page claimed it would do, but it's still appropriate under the
4234 same circumstances that the man page talks about.)
4235 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4236 are now supported, and enabled by default. Thus, the compiler can
4237 handle many floating point and complex operations much less
4238 inefficiently. (Thus e.g. you can implement a complex FFT
4240 * The compiler now detects type mismatches between DECLAIM FTYPE
4241 and DEFUN better, and implements CHECK-TYPE more correctly, and
4242 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4243 thanks to patches from Martin Atzmueller.
4244 * various fixes to make the cross-compiler more portable to
4245 ANSI-conforming-but-different cross-compilation hosts (notably
4246 Lispworks for Windows, following bug reports from Arthur Lemmens)
4247 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4248 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4249 fixed thanks to Pierre Mai's CMU CL patches.
4250 * fixes to keep the system from overflowing internal counters when
4251 it tries to use i/o buffers larger than 16M bytes
4252 * fixed bug 45a: Various internal functions required to support
4253 complex special functions have been merged from CMU CL sources.
4254 (When I was first setting up SBCL, I misunderstood a compile-time
4255 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4256 * improved support for type intersection and union, fixing bug 12
4257 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4258 more obscure bugs as well
4259 * some steps toward byte-compiling non-performance-critical
4260 parts of the system, courtesy of patches from Martin Atzmueller
4261 * Christophe Rhodes has made some debian packages of sbcl at
4262 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4263 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4264 stable, but are nonetheless usable. When he's ready, I'd be happy
4265 to add them to the SourceForge "File Releases" section. (And if
4266 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4267 * new fasl file format version number (because of changes in
4268 internal representation of (OR ..) types to accommodate the new
4269 support for (AND ..) types, among other things)
4271 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4272 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4274 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4276 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4277 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4278 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4279 * DESCRIBE now works on structure objects again.
4280 * Most function call argument type mismatches are now handled as
4281 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4282 know whether the function will be redefined before the call is
4283 executed. (The compiler could flag local calls with full WARNINGs,
4284 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4285 it doesn't keep track of enough information to know whether calls
4286 are local in this sense.)
4287 * Compiler output is now more verbose, with messages truncated
4288 later than before. (There should be some supported way for users
4289 to override the default verbosity, but I haven't decided how to
4290 provide it yet, so this behavior is still controlled by the internal
4291 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4292 src/compiler/ir1util.lisp.)
4293 * Fasl file format version numbers have increased again, because
4294 support for the Gray streams extension changes the layout of the
4295 system's STREAM objects.
4296 * The Gray subclassable streams extension now works, thanks to a
4297 patch from Martin Atzmueller.
4298 * The full LOAD-FOREIGN extension (not just the primitive
4299 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4300 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4301 but like most other programs, it defaults to copying the Unix
4302 environment from the original process instead of starting the
4303 new process in an empty environment.
4304 * Extensions which manipulate the Unix environment now support
4305 an :ENVIRONMENT keyword option which doesn't smash case or
4306 do other bad things. The CMU-CL-style :ENV option is retained
4307 for porting convenience.
4308 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4309 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4311 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4313 * A patch from Martin Atzmueller seems to have solved the SIGINT
4314 problem, and as far as we know, signal-handling now works cleanly.
4315 (If you find any new bugs, please report them!)
4316 * The system no longer defaults Lisp source file names to types
4317 ".l", ".cl", or ".lsp", but only to ".lisp".
4318 * The compiler no longer uses special default file extensions for
4319 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4320 seems to expect a single default extension for all compiled code,
4321 and there's no compelling reason to try to stretch the standard
4322 to allow two different extensions.) Instead, byte-compiled files
4323 default to the same extension as native-compiled files.
4324 * Fasl file format version numbers have increased again, because
4325 a rearrangement of internal implementation packages made some
4326 dumped symbols in old fasl files unreadable in new cores.
4327 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4328 many fewer weird special cases.
4329 * Bug #17 (differing COMPILE-FILE behavior between logical and
4330 physical pathnames) has been fixed, and some related misbehavior too,
4331 thanks to a patch from Martin Atzmueller.
4332 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4333 by Tim Moore, ported to SBCL by Martin Atzmueller.
4334 * Martin Atzmueller fixed several filesystem-related problems,
4335 including bug #36, in part by porting CMU CL patches, which were
4336 written in part by Paul Werkowski.
4337 * More compiler warnings in src/runtime/ are gone, thanks to
4338 more patches from Martin Atzmueller.
4339 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4342 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4344 * DESCRIBE now works on CONDITION objects.
4345 * The debugger now handles errors which arise when trying to print
4346 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4348 * The build system now uses an additional file, customize-target-features.lisp,
4349 to allow local modifications to the target *FEATURES* list. (The point of
4350 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4351 debugging features enabled, without having to worry about propagating it
4352 into everyone's system when I do a "cvs update".) When no
4353 customize-target-features.lisp file exists, the target *FEATURES* list
4354 should be constructed the same way as before.
4355 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4356 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4357 warn about behavior which is undefined under the ANSI spec. Note: This
4358 is specified by ANSI, but it's not very popular with programmers.
4359 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4360 macro in the SBCL sources for an example of a workaround which you
4361 might use to make portable ANSI-standard code which does what you want.
4362 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4363 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4364 when it's used as a non-toplevel form. (This is required in order
4365 to implement the DEFCONSTANT-EQX macro.)
4366 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4367 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4368 funny things, due to bugs in the implementation of EVAL-WHEN
4369 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4370 non-toplevel DEFCONSTANTs are uncommon.)
4371 * The core file version number and fasl file version number have been
4372 incremented, because the old noncompliant DEFCONSTANT behavior involved
4373 calling functions which no longer exist, and because I also took the
4374 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4375 * fixed bug 1 (error handling before read-eval-print loop starts), and
4376 redid debugger restarts and related debugger commands somewhat while
4378 ** The QUIT debugger command is gone, since it did something
4379 rather different than the SB-EXT:QUIT command, and since it never
4380 worked properly outside the main toplevel read/eval/print loop.
4381 Invoking the new TOPLEVEL restart provides the same functionality.
4382 ** The GO debugger command is also gone, since you can just invoke
4383 the CONTINUE restart directly instead.
4384 ** The TOP debugger command is also gone, since it's redundant with the
4385 FRAME 0 command, and since it interfered with abbreviations for the
4387 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4389 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4390 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4391 some porting work by Martin Atzmueller)
4392 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4393 with a boatload of patches which he ported to SBCL. Now that those
4395 ** The system tries to make sure that its low-priority messages
4396 are prefixed by semicolons, to help people who like to use
4397 syntax highlighting in their ILISP buffer. (This patch
4398 was originally due to Raymond Toy.)
4399 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4400 patches originally written by Raymond Toy.
4401 ** The compiler understands coercion between single-value and
4402 multiple-VALUES type expressions better, getting rid of some very
4403 weird behavior, thanks to patches originally by Robert MacLachlan
4404 and Douglas Crosher.
4405 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4406 lambda lists, thanks to a patch originally by Pierre Mai.
4407 ** The system no longer bogusly warns about "abbreviated type
4409 ** The compiler gets less confused by inlining and RETURN-FROM,
4410 thanks to some patches originally by Tim Moore.
4411 ** The system no longer hangs when dumping circular lists to fasl
4412 files, thanks to a patch originally from Douglas Crosher.
4413 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4414 undefined function error.
4415 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4416 in structure slot initforms) for now, documented workaround instead:-|
4417 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4418 * fixed bug 5: added stubs for various Gray stream functions called
4419 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4420 installed, at least appropriate type errors are generated
4421 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4422 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4423 consistently in DEFMETHOD forms.
4424 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4425 it doesn't seem to affect SBCL after all
4426 * The C runtime system now builds with better optimization and many
4427 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4429 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4431 * The system is now under CVS at SourceForge (instead of the
4432 CVS repository on my home machine).
4433 * The new signal handling code has been tweaked to treat register
4434 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4435 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4436 downstream, e.g. in debug-int.lisp, has implicit dependencies
4437 on the unsignedness of integer representation of machine words,
4438 and that caused the system to bomb out with infinite regress
4439 when trying to recover from type errors involving signed values,
4440 e.g. (BUTLAST '(1 2 3) -1).)
4441 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4442 (This was one of the bugs Peter Van Eynde reported back in July.)
4443 * The system now uses code inspired by Colin Walters' O(N)
4444 implementation of MAP (from the cmucl-imp@cons.org mailing
4445 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4446 inline the MAP operation, and there is more than one
4447 sequence argument to the MAP call (so that it can't just
4448 do ETYPECASE once and for all based on the type of the
4449 single sequence argument). (The old non-inline implementation
4450 of the general M-argument sequence-of-length-N case required
4451 O(M*N*N) time when any of the sequence arguments were LISTs.)
4452 * The QUIT :UNIX-CODE keyword argument has been renamed to
4453 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4454 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4456 * Raymond Wiker's patches to port dynamic loading from Linux to
4457 FreeBSD have been added.
4458 * The BUGS file is now more nearly up to date, thanks in large part
4459 to Martin Atzmueller's review of it.
4460 * The debugger now flushes standard output streams before it begins
4461 its output ("debugger invoked" and so forth).
4462 * The core version number and fasl file version number have both
4463 been incremented, because of incompatible changes in the layout
4465 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4466 used to not be called for a saved Lisp image.)
4467 * Martin Atzmueller's version of a patch to fix a compiler crash,
4468 as posted on sbcl-devel 13 September 2000, has been installed.
4469 * Instead of installing Martin Atzmueller's patch for the
4470 compiler transform for SUBSEQ, I deleted the compiler transform,
4471 and transforms for some similar consing operations.
4472 * A bug in signal handling which kept TRACE from working on OpenBSD
4474 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4475 away by constant folding
4476 * The system now defines its address space constants in one place
4477 (in the Lisp sources), and propagates them automatically elsewhere
4478 (through GENESIS and the sbcl.h file). Therefore, patching the
4479 address map is less unnecessarily tedious and error-prone. The
4480 Lisp names of address space constants have also been systematized.
4481 * CVS tags like dollar-Header-dollar have been removed from
4482 the sources, because they have never saved me trouble and
4483 they've been source of trouble working with patches and other
4484 diff-related operations.
4485 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4486 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4488 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4490 * The system has been ported to OpenBSD.
4491 * The system now compiles with a simple "sh make.sh" on the systems
4492 that it's supported on. I.e., now you no longer need to tweak
4493 text in the target-features.lisp-expr and symlinks in src/runtime/
4494 by hand, the make.sh takes care of it for you.
4495 * The system is no longer so grossly inefficient when compiling code
4496 involving vectors implemented as general (not simple) vectors (VECTOR T),
4497 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4498 which dares to use the various sequence functions on non-simple
4499 vectors, takes less of a performance hit.
4500 * There is now a primitive type predicate VECTOR-T-P
4501 to test for the (VECTOR T) type, so that e.g.
4502 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4503 can now be compiled with some semblance of efficiency. (The old code
4504 turned the type declaration into a full call to %TYPEP at runtime!)
4505 * AREF on (VECTOR T) is still not fast, since it's still compiled
4506 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4507 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4508 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4509 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4510 without making full calls to SUBTYPEP at runtime.
4511 (Some analogous efficiency issues for non-simple vectors specialized to
4512 element types other than T, or for non-simple multidimensional arrays,
4513 have not been addressed. They could almost certainly be handled the
4514 same way if anyone is motivated to do so.)
4515 * The changes in array handling break binary compatibility, so
4516 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4517 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4518 instead of (VALUES T T).
4519 * By following the instructions that Dan Barlow posted to sbcl-devel
4520 on 2 July 2000, I was able to enable primitive dynamic object
4521 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4522 functionality is not implemented (since it calls ld to resolve
4523 library references automatically, requiring RUN-PROGRAM for its
4524 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4525 try to resolve library references) is now supported.
4526 * The system now flushes the standard output streams when it terminates,
4527 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4528 them at several other probably-convenient times, e.g. in each pass of
4529 the toplevel read-eval-print loop, and after evaluating a form given
4530 as an "--eval" command-line option. (These changes were motivated by a
4531 discussion of stream flushing issues on cmucl-imp in August 2000.)
4532 * The source transform for TYPEP of array types no longer assumes
4533 that an array whose element type is a not-yet-defined type
4534 is implemented as an array of T, but instead punts, so that the
4535 type will be interpreted at runtime.
4536 * There is now some support for cross-compiling in make.sh: each of
4537 the phases of make.sh has its own script. (This should be transparent
4538 to people doing ordinary, non-cross-compile builds.)
4539 * Since my laptop doesn't have hundreds of megabytes of memory like
4540 my desktop machine, I became more motivated to do some items on
4541 my to-do list in order to reduce the size of the system a little:
4542 ** Arrange for various needed-only-at-cold-init things to be
4543 uninterned after cold init. To support this, those things have
4544 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4545 symbols with such names are now uninterned after cold init).
4546 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4547 fasl files for cold load.
4548 ** Remove the old compiler structure pooling code (which used to
4549 be conditional on the target feature :SB-ALLOC) completely.
4550 ** Redo the representation of some data in cold init to be more compact.
4551 (I also looked into supporting byte compiled code at bootstrap time,
4552 which would probably reduce the size of the system a lot, but that
4553 looked too complicated, so I punted for now.)
4554 * The maximum signal nesting depth in the src/runtime/ support code has
4555 been reduced from 4096 to 256. (I don't know any reason for the very
4556 large old value. If the new smaller value turns out to break something,
4557 I'll probably just bump it back up.)
4558 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4560 * Many, many bugs reported by Peter Van Eynde have been added to
4561 the BUGS list; some have even been fixed.
4562 * While enabling dynamic object file loading, I tried to make the
4563 code easier to understand, renaming various functions and variables
4564 with less ambiguous names, and changing some function calling
4565 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4566 * While trying to figure out how to do the OpenBSD port, I tried to
4567 clean up some of the code in src/runtime/. In particular, I dropped
4568 support for non-POSIX signal handling, added various comments,
4569 tweaked the code to reduce the number of compilation warnings, and
4570 renamed some files to increase consistency.
4571 * To support the new automatic configuration functionality in make.sh,
4572 the source file target-features.lisp-expr has been replaced with the
4573 source file base-target-features.lisp-expr and the machine-generated
4574 file local-target-features.lisp-expr.
4575 * fixed a stupid quoting error in make.sh so that using CMU CL
4576 "lisp -batch" as cross-compilation host works again
4578 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4580 * DESCRIBE no longer tries to call itself recursively to describe
4581 bound/fbound values, so that it no longer fails on symbols which are
4582 bound to themselves (like keywords, T, and NIL).
4583 * DESCRIBE now works on generic functions.
4584 * The printer now prints less-screwed-up representations of closures
4585 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4586 * A private symbol is used instead of the :EMPTY keyword previously
4587 used to mark empty slots in hash tables. Thus
4588 (DEFVAR *HT* (MAKE-HASH-TABLE))
4589 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4590 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4591 now does what ANSI says that it should. (You can still get
4592 similar noncompliant behavior if bang on the hash table
4593 implementation with all the symbols you get back from
4594 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4595 This breaks binary compatibility, since tests for equality to
4596 :EMPTY are wired into things like the macroexpansion of
4597 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4599 * There's now a minimal placeholder implementation for CL:STEP,
4600 as required by ANSI.
4601 * An obscure bug in the interaction of the normal compiler, the byte
4602 compiler, inlining, and structure predicates has been patched
4603 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4604 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4606 * Missing ordinary arguments in a macro call are now detected even
4607 when the macro lambda list contains &KEY or &REST.
4608 * The debugger no longer complains about encountering the top of the
4609 stack when you type "FRAME 0" to explicitly instruct it to go to
4610 the top of the stack. And it now prints the frame you request even
4611 if it's the current frame (instead of saying "You are here.").
4612 * As specified by ANSI, the system now always prints keywords
4613 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4615 * The default initial SIZE of HASH-TABLEs is now smaller.
4616 * Type information from CLOS class dispatch is now propagated
4617 into DEFMETHOD bodies, so that e.g.
4618 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4620 is now basically equivalent to
4621 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4622 (DECLARE (TYPE SINGLE-FLOAT X))
4624 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4625 operation, without having to do run-time type dispatch.
4626 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4627 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4628 * Since I don't seem to be making big file reorganizations very often
4629 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4630 is overflowing my ability to conveniently back them up), I've finally
4631 checked the system into CVS. (The CVS repository is on my home system,
4632 not at SourceForge -- putting it on SourceForge might come later.)
4633 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4634 high-level GC-NOTIFY-FOO functions send their output. (There's
4635 still very little control of where low-level verbose GC functions
4636 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4637 less than it used to -- the GC-NOTIFY-FOO functions are now under
4638 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4639 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4640 in only one place in the source code, and propagates it automatically
4641 everywhere that it's needed. Thus e.g. when I bump the version from
4642 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4643 * The C source files now include boilerplate legalese and documentation
4644 at the head of each file (just as the Lisp source files already did).
4645 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4646 to his page will be replaced with a link to his new CLiki service.
4648 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4650 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4651 * The build process now looks for GNU make under the default name "gmake",
4652 instead of "make" as it used to. If GNU make is not available as "gmake"
4653 on your system, you can change this default behavior by setting the
4654 GNUMAKE environment variable.
4655 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4656 can build without error under CMU CL.
4658 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4660 * There is now a partial SBCL user manual (with some new text and some
4661 text cribbed from the CMU CL manual).
4662 * The beginnings of a profiler have been added (starting with the
4663 CMU CL profiler and simplifying and cleaning up). Eventually the
4664 main interface should be through the TRACE macro, but for now,
4665 it's still accessed through vaguely CMU-CL-style functions and macros
4666 exported from the package SB-PROFILE.
4667 * Some problems left over from porting CMU CL to the new
4668 cross-compilation bootstrap process have been cleaned up:
4669 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4670 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4671 part when getting rid of the compiler *BACKEND* stuff.)
4672 ** The value of *NULL-TYPE* was screwed up, because it was
4673 being initialized before the type system knew the final
4674 definition of the 'NULL type. This screwed up several key
4675 optimizations in the compiler, causing inefficiency in all sorts
4676 of places. (I found it because I wanted to understand why
4677 GET-INTERNAL-RUN-TIME was consing.)
4678 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4679 PROCLAIM FTYPE information. Unfortunately this broke binary
4680 compatibility again, since now the forms output by DEFGENERIC
4681 to refer to functions which didn't exist in 0.6.3.
4682 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4683 can use the new (as of 0.6.3) transform for SOME into MAP into
4685 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4686 values to (INTEGER 0 1000000), so that the time code will no longer
4687 occasionally get blown up by Linux returning 1000000 microseconds
4688 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4689 its output conform to the ANSI spec. (Alas, this makes its output
4690 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4691 * A full call to MAP NIL with a single sequence argument no longer conses.
4692 * fixes to problems pointed out by Martin Atzmueller:
4693 * The manual page no longer talks about multiprocessing as though
4694 it were currently supported.
4695 * The ILISP support patches have been removed from the distribution,
4696 because as of version 5.10.1, ILISP now supports SBCL without us
4697 having to maintain patches.
4698 * added a modified version of Raymond Toy's recent CMU CL patch for
4699 EQUALP comparison of HASH-TABLE
4701 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4703 * The system still can't cross-compile itself with
4704 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4705 entails), but at least it can compile more of itself that way
4706 than it used to be able to, and various buglets which were uncovered
4707 by trying to cross-compile itself that way have now been fixed.
4708 * This release breaks binary compatibility again. This time
4709 at least I've incremented the FASL file format version to 2, so that the
4710 problem can be detected reliably instead of just causing weird errors.
4711 * various new style warnings:
4712 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4713 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4714 ** using the lexical binding of a variable named in the *FOO* style
4715 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4716 as specified by ANSI.
4717 * *RANDOM-STATE* is no longer automatically initialized from
4718 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4719 default behavior of the system is to repeat its behavior every time
4720 it's run. If you'd like to change this behavior, you can always
4721 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4722 old convention there was no comparably easy way to get the system to
4723 repeat its behavior every time it was run.
4724 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4725 FTYPE declarations has been removed, in favor of their ANSI
4726 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4727 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4728 the types of their sequence arguments can be determined at compile time.
4729 This is done through a new open code expansion for MAP which eliminates
4730 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4731 argument types can be determined at compile time.
4732 * The optimizer now transforms COERCE into an identity operation when it
4733 can prove that the coerced object is already of the correct type. (This
4734 can be a win for machine generated code, including the output of other
4735 optimization transforms, such as the MAP transform above.)
4736 * Credit information has been moved from source file headers into CREDITS.
4737 * Source file headers have been made more standard.
4738 * The CASE macro now compiles without complaining even when it has
4741 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4743 * (Note that the way that the PCL macroexpansions were rewritten
4744 to accommodate the change in DEFGENERIC below breaks binary
4745 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4746 not run under sbcl-0.6.2. Once we get out of alpha releases,
4747 i.e. hit release 1.0.0, we'll probably try to maintain binary
4748 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4749 and sbcl-1.4.4. Until then, however, it might be fairly common
4750 for maintenance releases to break binary compatibility.)
4751 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4753 * The reporting of unhandled signals has been changed to print some
4754 explanatory text as well as the report form. (Previously only
4755 the report form was printed.)
4756 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4757 it defines, so that the compiler no longer issues undefined function
4758 warnings for compiled-but-not-yet-loaded generic functions.
4759 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4760 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4761 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4762 section of the ANSI spec are supported.
4763 * The "" nickname for the "KEYWORD" package has been removed.
4764 The reader still handles symbol tokens which begin with a package marker
4765 as keywords, but it doesn't expose its mechanism for doing so in the
4766 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4767 * The system now issues STYLE-WARNINGs for contradictory TYPE
4768 proclamations. (Warnings for contradictory FTYPE proclamations would
4769 be nice too, but those can't be done usefully unless the type system
4770 is made smarter about FUNCTION types.)
4771 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4772 systematized, so that "*target-*.lisp is supposed to exist only on the
4773 target and imply that there's a related file which exists on the
4774 host, and *host-*.lisp is supposed to exist only on the host and imply
4775 that there's a related file which exists on the target. This involves a
4776 lot of renaming. Hopefully the acute confusion caused by the renaming
4777 will be justified by the reduction in chronic confusion..
4778 ** runtime-type.lisp -> early-target-type.lisp
4779 ** target-type.lisp -> late-target-type.lisp
4780 ** early-host-format.lisp -> early-format.lisp
4781 ** late-host-format.lisp -> late-format.lisp
4782 ** host-error.lisp -> misc-error.lisp
4783 ** early-error.lisp -> early-target-error.lisp
4784 ** late-error.lisp -> late-target-error.lisp
4785 ** host-defboot.lisp -> early-defboot.lisp
4786 ** code/misc.lisp -> code/target-misc.lisp
4787 ** code/host-misc.lisp -> code/misc.lisp
4788 ** code/numbers.lisp -> code/target-numbers.lisp
4789 ** code/early-numbers.lisp -> numbers.lisp
4790 ** early-host-type.lisp -> early-type.lisp
4791 ** late-host-type.lisp -> late-type.lisp
4792 ** host-typep.lisp -> typep.lisp
4793 ** load.lisp -> target-load.lisp
4794 ** host-load.lisp -> load.lisp
4795 ** host-disassem.lisp -> disassem.lisp
4796 ** host-insts.lisp -> insts.lisp
4797 ** byte-comp.lisp -> target-byte-comp.lisp
4798 ** host-byte-comp.lisp -> byte-comp.lisp
4799 ** host-signal.lisp -> signal.lisp
4800 ** host-defstruct.lisp -> defstruct.lisp
4801 ** late-target-type.lisp -> deftypes-for-target.lisp
4802 Furthermore, several other previously target-only files foo.lisp (e.g.
4803 hash-table.lisp and random.lisp) have been split into a target-and-host
4804 foo.lisp file and a target-only target-foo.lisp file, with their key type
4805 definitions in the target-and-host part, so that the cross-compiler will
4806 know more about target types.
4807 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4808 gone away. In their place are various *BACKEND-FOO* variables
4809 corresponding to the slots of the old structure.
4810 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4811 into the target SBCL has been fixed.
4812 * The chill.lisp system for loading cold code into a running SBCL
4814 * Support for the CMU CL "scavenger hook" extension has been removed.
4815 (It was undocumented and unused in the CMU CL sources that SBCL was
4816 derived from, and stale in sbcl-0.6.1.)
4817 * Various errors in the cross-compiler type system were detected
4818 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4819 (enabling various consistency checks). Many of them were fixed,
4820 but some hard problems remain, so the compiler is back to
4821 running without *TYPE-SYSTEM-INITIALIZED* for now.
4822 * As part of the cross-compiler type system cleanup, I implemented
4823 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4824 * I have started adding UNCROSS calls throughout the type system
4825 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4826 on cross-compiler input files will be able to go away, and various
4828 * CONSTANTP now returns true for quoted forms (as explicitly required
4831 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4833 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4834 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4835 (MAKE-LIST -1). In the longer term, it ought to become true
4836 that declarations are assertions even at SAFETY 1. For now, it's not
4837 quite true even at SAFETY 3, but it's at least more nearly true..
4838 (Note that this change seems to increases the size of the system by
4839 O(5%) and to decrease the speed of the compiler by 20% or more.)
4840 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4841 for the problem of printing dozens of lines of distracting information
4842 about low-level system machinery as part of the top stack frame
4843 on entry to the debugger when an undefined function was called.
4844 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4845 is not reset to COMMON-LISP-USER.
4846 * Compilation of stuff related to dyncount.lisp has been made conditional
4847 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4848 smaller. The various dyncount-related symbols have been moved into
4849 a new "SB-DYNCOUNT" package.
4850 * tty-inspect.lisp has been renamed to inspect.lisp.
4851 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4852 feature has gone away. (When we eventually port to other flavors of
4853 libc and/or Unix, we'll try to make the differences between flavors
4854 invisible at the user level.)
4855 * Various other *FEATURES* tags, and/or their associated conditionals,
4856 have been removed if obsolescent, or given better documentation, or
4857 sometimes given more-mnemonic names.
4859 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4861 * tidied up "make.sh" script
4862 * tidied up system directory structure
4863 * better "clean.sh" behavior
4864 * added doc/FOR-CMUCL-DEVELOPERS
4865 * many many small tweaks to output format, e.g. removing possibly-confusing
4866 trailing #\. character in DESCRIBE-INSTANCE
4867 * (EQUALP #\A 'A) no longer signals an error.
4868 * new hashing code, including EQUALP hashing
4869 * tidied up Lisp initialization and toplevel
4870 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4871 * command line argument processing
4872 * added POSIX-GETENV function to deal with Unix-ish environment variables
4873 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4874 terminating SBCL on EOF
4875 * non-verbose GC by default
4876 * There is no more "sbcl" shell script; the sbcl file is now the C
4877 runtime executable (just like CMU CL).
4878 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4880 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4881 symbol and package information as Lisp native symbol and package objects
4882 instead of strings naming symbols and strings naming packages. This way,
4883 whenever packages are renamed (as in warm init), debug information is
4884 transformed along with everything else.
4885 * tweaked the optimization policy declarations which control the building
4886 of SBCL itself. Now, among other things, the system no longer saves
4887 source location debugging information. (This helps two problems at once
4888 by reducing SBCL size and by keeping SBCL from trying to look for its
4889 sources -- which may not exist -- when reporting errors.)
4890 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4891 debugging and testing purposes
4892 * cleaned up printing, making the printer call PRINT-OBJECT for
4893 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4894 methods, giving nearly-ANSI behavior
4895 * converted almost all special variables to use *FOO* naming convention
4896 * deleted PARSE-TIME functionality, since it can be done portably
4897 * moved some files out of cold init into warm init
4898 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4900 * regularized formatting of source files
4901 * added an install.sh script
4902 * fixed ridiculous memory usage of cross-compiler by making
4903 compiler/alloc.lisp not try to do pooling unless it can hook
4904 itself into the GC of the cross-compilation host. Now the system
4905 builds nicely on my old laptop.
4906 * added :SB-ALLOC in target-features.lisp-expr
4907 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4908 was not implemented)
4909 * re-did condition handling and note reporting in the compiler. Notes
4910 are no longer handled by signalling conditions. Style warnings
4911 and warnings are handled more correctly and reported in such a way
4912 that it's easy to find one or the other in your output (so that you
4913 can e.g. figure out which of many problems caused COMPILE-FILE to
4915 * changed the severity of several compiler warnings from full WARNING
4916 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4917 compiler note reporting so that it doesn't use the condition system
4918 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4919 COMPILE-FILE command)
4920 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4921 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4922 no longer supported, since their implementation was deeply intertwingled
4923 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4924 * removed bogus "support" for compiler macros named (SETF FOO), and
4925 removed the compiler macro for SETF INFO (but only after making a fool
4926 of myself on the cmucl-imp mailing list by posting a bogus patch for
4927 DEFINE-COMPILER-MACRO..)
4928 * Compiled files containing forms which have side effects on the Lisp
4929 reader (such as DEFPACKAGE forms) are now handled more correctly.
4930 (Compiler queuing of top level lambdas has been suppressed by setting
4931 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4932 * deleted various currently-unused source files, e.g. gengc.lisp. They
4933 may be added back at some point e.g. when porting to other architectures,
4934 but until they are it's distracting to distribute them and to try to
4936 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4937 there were so many of them they're just distractions, and UNCROSS is
4938 known to be able to handle the current sources
4939 * moved PROFILE functionality into TRACE, so that it will be clear
4940 how the wrapping and unwrapping of functions when you profile them
4941 interacts with the wrapping and unwrapping of functions when you
4942 trace them. (Actually, the functionality isn't there yet, but at least
4943 the interface specification is there. Hopefully, the functionality will
4944 arrive with some future maintenance release.)
4945 * removed host-oops.lisp
4946 * changed signature of QUIT function to allow UNIX-CODE argument
4947 * fixed READ-SEQUENCE bug
4948 * tweaked verbose GC output so that it looks more like the progress
4949 output that ANSI specifies for functions like LOAD
4950 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4951 * added <http://sbcl.sourceforge.com> to the banner information printed by