1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.1 relative to sbcl-1.0:
3 * improvement: sb-sprof traces call stacks to an arbitrary depth on
4 x86/x86-64, rather than the previous fixed depth of 8
5 * bug fix: non-ascii command-line arguments are processed correctly
6 (thanks to Yaroslav Kavenchuk)
7 * bug fix: TRACE :ENCAPSULATE NIL (and function end breakpoints)
9 * bug fix: non-required arguments were not passed correctly when a method
10 defined using DEFMETHOD was called from a mop-generated method using
11 CALL-NEXT-METHOD (reported by Pascal Costanza)
12 * bug fix: recursion is now permitted in accessors through
13 SLOT-UNBOUND. (reported by Pascal Costanza)
14 * bug fix: an error was signaled at startup if the HOME environment
15 variable was defined, but had an empty value (reported by Peter Van Eynde)
16 * optimization: loading generic functions no longer takes O(n^2) time,
17 proportional to the amount of methods in the generic function
18 (reported by Todd Sabin and Jeremy Brown)
19 * optimization: the FIND and POSITION family of sequence functions
20 are significantly faster on arrays whose element types have been
23 changes in sbcl-1.0 relative to sbcl-0.9.18:
24 * improvement: experimental support for threading on FreeBSD/x86.
25 (thanks to NIIMI Satoshi)
26 * improvement: runtime option --dynamic-space-size can be used
27 to set the size of the dynamic space reserved on startup.
28 * improvement: floating point modes in effect are now saved in
29 core, and restored on startup.
30 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
31 startup, not time since first call to GET-INTERNAL-REAL-TIME.
32 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
33 threads are not running after *SAVE-HOOKS* have run.
34 * improvement: writes to CLOS instance slots are type-checked in code
35 compiled with (SAFETY 3)
36 * improvement: floating-point exception handling on FreeBSD (thanks to
38 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
39 (thanks to Zach Beane)
40 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
42 * improvement: added support for the Shift-JIS external format.
43 (contributed by NIIMI Satoshi)
44 * improvement: callbacks are supported on Linux/PPC. (thanks to
46 * bug fix: compiler bug triggered by a (non-standard) VALUES
47 declaration in a LET* was fixed. (reported by Kaersten Poeck)
48 * bug fix: file compiler no longer confuses validated and already
49 dumped structurres. (reported by Kaersten Poeck)
50 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
51 fill-pointer signals a type-error as required. (thanks to
53 * bug fix: disassemly of funcallable instances works.
54 * bug fix: single stepping on PPC.
55 * bug fix: fix thread-safety problems in the type system (generally
56 manifesting as nonsensical errors like "STRING is a bad type specifier
57 for sequences" or "The value 1 is not of type FIXNUM")
58 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
59 (reported by Josip Gracin)
60 * bug fix: an error is signaled for attempts to displace arrays with
61 incompatible element types (thanks to Mario Mommer)
62 * bug fix: more correct handling of wide characters in debug info
63 (bug reported by Attila Lendvai and fixed by Juho Snellman)
64 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
65 and don't cause extra consing
66 * optimization: MAP and MAP-INTO are significantly faster on vectors
67 whose elements types have been declared.
68 * Improvements to SB-SPROF:
69 ** Support for allocation profiling
70 ** Reduced profiling overhead, especially for long profiling runs
71 * Improvements to the Windows port:
72 ** floating point exceptions are now reported correctly.
73 ** stack exhaustion detection works partially.
74 ** more accurate GET-INTERNAL-REAL-TIME.
75 ** better RUN-PROGRAM behaviour in case of errors in the child
77 ** PROBE-FILE now simplifies pathnames correctly.
78 ** DIRECTORY now works correctly with :WILD-INFERIORS.
79 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
80 1st 1970 (although time timezone data will be unreliable).
81 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
83 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
84 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
85 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
87 * bug fix: two potential GC deadlocks affecting threaded builds.
88 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
89 returns T (reported by Anton Kazennikov)
90 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
91 with non-variable places
92 * bug fix: remove a race condition in the setting of
93 funcallable-instance functions, this should make threaded CLOS
94 code more stable against memory faults.
95 * bug fix: corruption of specials when unbinding is interrupted by an
96 asynchronous unwind (reported by Hannu Koivisto)
97 * improvement: the debugger will now also display local variables that
98 are only used once, for code compiled with a DEBUG optimization quality
101 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
102 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
103 * incompatible change: External-format support for FFI calls. The
104 SB-ALIEN:C-STRING no longer implies an ASCII
105 external-format. Instead the string is subject to external-format
106 conversion. Additionally return values of type SB-ALIEN:C-STRING
107 are by default of type (SIMPLE-ARRAY CHARACTER), not
108 SIMPLE-BASE-STRING. For an alien type that behaves like the old
109 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
110 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
111 * incompatible change: SB-EXT package no longer contains the
112 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
113 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
115 * incompatible change: the single-stepper is no longer available
116 on Alpha, Mips and Sparc platforms.
117 * minor incompatible change: the direct superclasses of
118 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
119 not (STANDARD-OBJECT FUNCTION). This makes the
120 class-precedence-lists of GENERIC-FUNCTION and
121 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
123 * minor incompatible change: the default stream external format on
124 non-unicode SBCL is no longer detected from the locale, but is always
126 * new feature: Add a version of evaluator that uses an interpreter instead
127 of the compiler. EVAL still uses the compiler by default, to switch it
128 to use the interpreter, set the value of the variable
129 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
130 * minor incompatible change: the single-stepper REPL has been merged
131 with the normal debugger (see the "Stepping" heading of the debugger help
132 for more details). The debugger command STEP will no longer switch
133 to the single-stepper REPL.
134 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
135 for a type now works.
136 * bug fix: loading of default sysinit file works. (thanks to Leonid
138 * bug fix: better detection of circularities in the file-compiler.
139 (reported by Marco Monteiro)
140 * bug fix: the CL pathname functions now work with files that have
141 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
142 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
143 systems with Unix98 pty semantics.
144 * bug fix: ASDF-INSTALL will now work with bsd tar.
145 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
147 * bug fix: timers expiring in dead threads no longer cause a
148 type-error (reported by Paul "Nonny Mouse").
149 * bug fix: thanks to more lightweight single-stepper instrumentation,
150 code compiled with (DEBUG 3) will compile and execute significantly faster,
151 and will have more accurate type-inferencing than before
152 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
153 whose bindings are modified
154 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
155 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
156 ** replace dummy implementations of CL:MACHINE-INSTANCE and
157 CL:SOFTWARE-VERSION with proper version
159 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
160 * feature: implemented the READER-METHOD-CLASS and
161 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
162 as specified by AMOP.
163 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
165 * optimization: faster LOGCOUNT implementation on x86 and x86-64
166 (thanks to Lutz Euler)
167 * optimization: hashing of general arrays and vectors has been
168 improved. (reported by Any Fingerhut)
169 * enhancement: SB-INTROSPECT is now able to find definitions of
170 profiled functions. (thanks to Troels Henriksen)
171 * enhancement: compiler-macro expansion applies now to FUNCALL forms
172 as well, allowing compiler-macros for SETF-functions to expand.
173 * enhancement: step-instrumentation no longer wraps known
174 single-value functions with multiple-value context, allowing
175 better type inference.
176 * fixed bug #337: use of MAKE-METHOD in method combination now works
177 even in the presence of user-defined method classes. (reported by
178 Bruno Haible and Pascal Costanza)
179 * fixed bug #339(c): if there are applicable methods not part of any
180 long-form method-combination group, call INVALID-METHOD-ERROR.
181 (reported by Bruno Haible)
182 * fixed bug #361: the :FUNCTION initarg in the protocol for
183 initialization of methods can now be used to override
184 internally-produced optimized functions. (reported by Bruno
186 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
187 system-provided lambda expression no longer cause warnings about
188 unbound #:|pv-table| symbols.
189 * bug fix: improved the handling of type declarations and the
190 detection of violations for keyword arguments with non-constant
192 * bug fix: potentially erronous calls to PATHNAME and
193 MERGE-PATHNAMES were being flushed in some cases.
194 (reported by Richard Kreuter)
195 * bug fix: compiled calls to TYPEP were mishandling obsolete
196 instances. (reported by James Bielman and Attila Lendvai)
197 * bug fix: format strings with ~> without matching ~< no longer
198 trigger an AVER, but signal an understandable error instead.
199 (reported by Antonio Martinez)
200 * bug fix: specifying an output-file without a pathname-type for
201 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
202 of input-file instead of "fasl". (reported by Robert Dodier)
203 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
204 (reported by James Y Knight).
205 * bug fix: compiler-macros-function did not consider the environment
206 argument for shadowing by local functions.
207 * bug fix: compiler-macros expansion was inhibited by local INLINE
209 * bug fix: inline expansions of known functions were subject to
210 step-instrumentation in high debug policies, leading to problems
212 * bug fix: compiler failed to differentiate between different CONS
214 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
215 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
216 * bug fix: #368: incorrect use of expressed vs. upgraded array
218 * bug fix: #306a: more precise unions of array types.
219 * thread-safety improvements:
220 ** CONDITION-WAIT could return early on Linux, if the thread was
221 interrupted and subsequently continued with SIGCONT.
222 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
224 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
225 * added support for the ucs-2 external format. (contributed by Ivan
227 * minor incompatible change: pretty printing of objects of type
228 (cons symbol) is, in the default pprint-dispatch-table, now
229 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
231 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
232 called later in a class's lifetime, possibly as late as when the
233 first instance of the class is created. Previously,
234 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
235 class became finalizeable.
236 * fixed bug: FILE-POSITION sometimes returned inconsistent results
237 for multibyte external-format streams. (thanks to "vbzoli")
238 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
239 with :ALLOCATION :CLASS inherited from superclasses of the
241 * fixed bug: anonymous classes can now be created using the :NAME
242 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
243 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
244 * fixed bug: core-files saved with :EXECUTABLE T can again be
245 executed when SBCL_HOME isn't set. (reported by James Knight)
246 * fixed bug: toplevel LOCALLY forms with declarations could
247 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
248 * fixed bug: printing from several different threads using different
249 values of *print-case* could cause invalid output, due to
250 some internal special variables of the printer not being bound
251 thread-locally (reported by Max Mikhanosha)
252 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
253 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
254 (reported by Pascal Costanza)
255 * fixed bug: FINALIZE-INHERITANCE is called from
256 REINITIALIZE-INSTANCE on classes when the class has previously
257 been finalized, as required by AMOP.
258 * minor code generation optimizations:
259 ** better register allocation in CLOS dispatching functions
260 ** overflow detection when coercing signed bytes to fixnums on x86-64
261 ** is now implemented with one IMUL instruction instead of three shifts
262 ** more efficient bit-vector access on x86 and x86-64
263 ** more efficient access to raw structure slots on x86 and x86-64
264 * fixed some bugs revealed by Paul Dietz' test suite:
265 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
268 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
269 * feature: thread support on Solaris/x86, and experimental thread support
271 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
273 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
274 default method for SLOT-UNBOUND.
275 * minor incompatible change: prevent the user from specializing the
276 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
277 somewhat counter to the intent of the protocol, I (CSR) think, and
278 additionally it just doesn't work in SBCL as currently
279 implemented, thanks to optimizations (that are always valid for
280 the other three SLOT-VALUEish functions, but not for the setter).
281 * minor incompatible change: the :SB-LDB feature is now enabled by
282 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
283 the low-level debugger.
284 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
285 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
286 down to an SB-SYS:FD-STREAM, allowing direct communication in
287 more cases. Temporary files and pipes are still used as a fallback
289 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
290 on the non-reentrant C functions localtime(3) and gmtime(3).
291 * bug fix: global optimization policy was not visible in LOCALLY and
293 * bug fix: class objects can be used as specializers in methods.
294 (reported by Pascal Costanza)
295 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
296 with a type error. (reported by blitz_ on #lisp)
297 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
298 failed with a type error. (reported by Pascal Bourguignon)
299 * bug fix: merging pathnames against defaults with :DIRECTORY
300 starting with '(:RELATIVE :BACK) should preserve the :BACK.
301 (reported by James Y Knight)
302 * bug fix: saving large (>2GB) cores on x86-64 now works
303 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
304 constant index and a (simple-array (signed-byte 32)) array
305 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
306 error (patch by Robert J. Macomber)
307 * feature: TIME now displays the amount of run-time spent in GC
308 * bug fix: The debugger now does a better job of respecting
309 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
310 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
311 workaround for bug 403.)
312 * bug fix: floating point exception handling now works on FreeBSD
313 (thanks to NIIMI Satoshi)
314 * fixed some bugs revealed by Paul Dietz' test suite:
315 ** MISC.641: LET-conversion were not supposed to work in late
317 * improvements to the Win32/x86 port:
318 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
319 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
321 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
322 * new feature: source path information is generated for macro-expansion
323 errors for use in IDE's like Slime (thanks to Helmut Eller)
324 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
325 * bug fix: compiler does not loop forever on an invalid type in
327 * improvement: compilation of most CLOS applications is significantly
329 * optimization: added a limited bytecode compiler for simple toplevel
330 forms, speeding up compilation and FASL loading
331 * bug fix: the statistical profiler now properly distinguishes anonymous
334 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
335 * minor incompatible change: in sbcl-0.9.11 (but not earlier
336 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
337 into subclasses of the finalized class. Now user calls to
338 FINALIZE-INHERITANCE finalize just the one class, and calls by the
339 system return before any subclasses are finalized.
340 * minor incompatible change: The reader no longer ignores errors
341 regarding non-existent packages in #+ and #- feature tests.
342 * new feature: command line options --no-sysinit, --no-userinit to
343 inhibit loading the corresponding init files
344 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
345 for sending data through UDP sockets (thanks to François-René Rideau)
346 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
347 error is signalled instead (thanks to François-René Rideau)
348 * minor incompatible change: Error signalling behaviour of lexical
349 operations violating package locks has changed slightly. Refer to
350 documentation on package locks for details.
351 * enhancement: EVAL can process IF-expressions without resorting to the
353 * bug fix: Some operations involving SIN, COS, or TAN weren't being
354 constant-folded properly due to missing out-of-line functions.
355 (reported by Mika Pihlajamäki)
356 * bug fix: LISTEN sometimes returned T even in cases where no data was
357 immediately available from the stream
358 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
359 were reversed. (reported by Levente Mészáros)
360 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
361 when given a vector displaced to an adjustable array. (reported
363 * bug fix: derivation of float boundaries from numbers outside the
364 appropriate float range (reported by John Wiseman)
365 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
367 * bug fix: precomputing cache entries for generic functions with
368 some subclasses of specializers as yet invalid does not attempt to
369 fill a cache line with a negative offset. (reported by Levente
371 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
372 allow condition class objects as arguments to DOCUMENTATION and
373 (SETF DOCUMENTATION); only find and set documentation for
374 structure names for the STRUCTURE doc-type. (suggested by Gary
376 * improvements to the Win32/x86 port:
377 ** (user-homedir-pathname) and default initialization file
378 locations now know about the user's "Documents and Settings"
379 directory (thanks to Yaroslav Kavenchuk)
380 ** run-program is implemented (thanks to Mike Thomas)
381 ** sockets support (thanks to Timothy Ritchey)
382 ** better backtrace support (thanks to Alastair Bridgewater)
383 ** sb-grovel supported
384 ** asdf-install and sb-posix work somewhat
385 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
386 * improvements to the Solaris/x86 port:
387 ** works on Solaris 11/Solaris Express
388 ** floating-point exception handling support
389 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
390 * fixed some bugs revealed by Paul Dietz' test suite:
391 ** REMOVE-METHOD returns its generic function argument even when
392 the method is not one of the generic functions' methods.
393 ** objects declared as MEMBER types can be admissible arguments to
395 ** printing characters should simply be printed by the FORMAT ~:C
397 ** compiler failure when compiling functions with hairy constant
398 defaults for optional parameters.
399 ** compiler produces wrong code when MAYBE-INLINE-expanding a
400 function, which is already optimized.
402 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
403 * new platform: experimental support for SBCL x86/Darwin, including
404 MacOS X 10.4.5 on Intel.
405 * new feature: Unicode character names are now known to the system
406 (through CHAR-NAME and NAME-CHAR).
407 * new feature: the filesystem location of SBCL's core file is
408 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
409 * minor incompatible change: the contrib modules SB-POSIX and
410 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
411 this change is to make it easier to distribute
412 location-independent binaries.
413 * bug fix: as implied by AMOP, standardized classes no longer have
414 slots named by external symbols of public packages. (reported by
416 * optimization: calling functions via constant symbols -- as in
417 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
418 via the function object as in (FUNCALL #'FOO).
419 * optimization: on x86 and x86-64, the calling convention for the
420 case of dealing with an unknown number of values has been altered
421 to be friendlier to the prediction heuristics implemented,
422 particularly with reference to CALL and RET pairing. (thanks to
423 Alastair Bridgewater)
424 * optimization: on x86, the code for access to thread-local symbol
425 values and binding/unbinding of thread-local symbols is smaller.
426 (thanks to Alastair Bridgewater)
427 * enhancement: CONSTANTP is now able to determine constantness of
428 more complex forms, including calls to constant-foldable standardized
429 functions and some special forms beyond QUOTE.
430 * fixed bug: occasional GC crashes on Solaris/x86
431 * optimization: x86-64 supports stack allocation of results of simple
432 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
433 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
434 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
435 (thanks to James Knight)
436 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
437 by the standard (thanks to Stephen Compall)
439 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
440 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
441 be used for bundling the runtime and the core file into one
442 executable binary. This feature is not currently supported on all SBCL
443 platforms. (thanks to James Bielman and NIIMI Satoshi)
444 * new feature: a generational or ephemeral garbage collector is now
445 the default on the PowerPC platform (both Linux and Darwin). The
446 old Cheney (stop and copy) collector is a build-time option.
447 (thanks to Cyrus Harmon, after Raymond Toy)
448 * minor incompatible change: the method by which SBCL finds its
449 contributed modules has changed; it no longer relies on symbolic
450 links from an $SBCL_HOME/systems directory, but searches directly
451 in the subdirectories of $SBCL_HOME.
452 * enhancement: the dynamic heap size on the Linux/PPC platform is
453 markedly larger, even using the older Cheney garbage collector.
454 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
455 certain complicated string types. (reported by Gary King)
456 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
457 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
458 * fixed bug: DOCUMENTATION on structures no longer signals an
459 error if no structure type of the right name exists. (reported by
461 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
462 applicable non-standard primary or :AROUND method on
463 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
464 no longer cause unbound variable errors. (reported by Kevin Reid)
465 * fixed bug: metacircle resolution in cases where methods have slots
466 added before the slots from STANDARD-METHOD. (reported by Jean
468 * fixed bug: the Power PC assembly code for calling into lisp
469 sometimes computed its return address wrongly (depending on the
470 15th bit of the address, fixed at link time). This used to
471 manifest itself in a segmentation violation while building PCL.
472 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
473 many others over the years)
474 * fixed bug: ROOM no longer reports silly numbers for stack usage if
475 the stack pointer (treated as a signed integer) is negative.
476 (thanks to Peter van Eynde)
478 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
479 * new platform: experimental support for the Windows operating
480 system has been added. (thanks to Alastair Bridgewater)
481 * fixed several bugs in and robustified the PPC FFI (including
482 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
483 * bug fix: allow non-simple string symbol names (reported by Paul
485 * bug fix: interrupt handling on NetBSD (thanks to Richard M
487 * bug fix: saving a core corrupted callbacks on x86/x86-64
488 * bug fix: closed a loophole in metacircularity detection and
489 grounding in the PCL implementation of CLOS.
490 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
491 (reported by tomppa on #lisp)
492 * bug fix: clear the direction flag on Lisp -> C transitions, as
493 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
494 (reported by Andrej Grozin and Hendrik Maryns)
495 * optimization: major improvements to GC efficiency on GENCGC platforms
496 * optimization: faster implementation of EQUAL
497 * optimization: emit more efficient opcodes for some common
498 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
499 * optimization: several other minor code-generation improvements on x86-64
500 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
502 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
503 * minor incompatible change: (SETF CLASS-NAME) and (SETF
504 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
505 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
506 by ANSI as a generic function, and for consistency (SETF
507 GENERIC-FUNCTION-NAME) is treated likewise.
508 * fixed bug #233.b: make constraint propagation notice when a variable
509 value is changed after it is referenced but before it is used
510 * fixed bug #296: no more arbitrary behaviour from filenames with
511 odd characters as --load arguments. (reported by Adam Warner)
512 * fixed bug #390: :CHARACTER-SET pathname components now work as
513 expected. (reported by Tim Daly Jr)
514 * fixed bug #391: complicated :TYPE intersections in slot
515 definitions no longer cause an error in PCL internals.
516 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
517 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
518 returning the number of octets which would be written to the
519 file-stream. (thanks to Robert J. Macomber)
520 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
521 arguments to the internal stream functions. (thanks to David
523 * bug fix: stack exhaustion is now handled on the x86/SunOS
524 platform. (thanks to Daisuke Homma)
525 * bug fix: more accurate ROOM results on GENCGC platforms
526 * optimization: improved type inference for arithmetic-for
527 index variables in LOOP
528 * optimization: faster floating-point SQRT on x86-64
529 * fixed some bugs revealed by Paul Dietz' test suite:
530 ** DOCUMENTATION returns NIL instead of "" for method combinations
531 that don't have a docstring
533 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
534 * minor incompatible change: (SETF CLASS-NAME) and (SETF
535 GENERIC-FUNCTION-NAME) are no longer generic functions, and
536 therefore are not customizeable by user code (as seems to be at
537 least permitted and maybe required by AMOP). As a consolation,
538 however, the SBCL implementation of these functions now calls
539 REINITIALIZE-INSTANCE as specified by AMOP.
540 * bug fix: slot-definition documentation is propagated as per ANSI
541 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
542 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
543 argument, as do eslotd initialization methods. (from Pascal
544 Costanza's "Closer" project)
545 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
546 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
548 * bug fix: it is now possible to have more than one subclass of
549 STANDARD-GENERIC-FUNCTION without causing stack overflow.
550 (reported by Bruno Haible, Pascal Costanza and others)
551 * bug fix: the dependent update protocol now works for generic
552 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
554 * bug fix: condition-class instances corresponding to
555 DEFINE-CONDITION forms are now created eagerly. (reported by
556 Kalle Olavi Niemitalo on comp.lang.lisp)
557 * bug fix: floating point printing is more accurate in some
558 circumstances. (thanks to Simon Alexander)
559 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
560 merged with *DEFAULT-PATHNAME-DEFAULTS*.
561 * bug fix: callbacks on OS X now preserve stack-alignment.
562 (thanks to Cyrus Harmon)
563 * enhancement: the x86-64 disassembler is much better at
564 disassembling SSE instructions. (thanks to Lutz Euler)
565 * enhancement: CHECK-TYPE on a variable now allows type-inference
566 (thanks to Vincent Arkesteijn)
567 * optimization: improved performance of EUC-JP external format.
568 (thanks to NIIMI Satoshi)
569 * optimization: performance improvements to IO on file streams of
570 :ELEMENT-TYPE CHARACTER
571 * optimization: much faster memory allocation on x86-64
572 * optimization: faster garbage collections (latency and throughput)
574 * optimization: faster bignum subtraction and division on x86 and x86-64
575 (thanks to Lutz Euler)
576 * optimization: more accurate type-inference for loops that use a
577 floating point index variable or a negative step.
579 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
580 * bug fix: add a workaround to SBCL looping infinitely at startup on
581 Linux kernels with apparently buggy implementations of personality().
582 (thanks to Svein Ove Aas)
583 * bug fix: Unicode symbols are correctly printed in LDB backtraces
584 (thanks to David Lichteblau)
585 * bug fix: local bindings shadow global symbol macros for
586 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
587 * optimization: non-open coded uses of numeric comparison operators
588 (e.g. >) no longer cons when called with more than one parameter
589 on platforms supporting dynamic-extent allocation.
590 * enhancement: saving cores with foreign code loaded is now supported
591 on MIPS/Linux in addition to the previously supported platforms.
592 * bug fix: FIND-RESTART now tests for activity, not applicability when given
593 a restart object as identifier. (reported by Helmut Eller for CMUCL)
594 * bug fix: division by zero in sb-sprof when no samples were collected
595 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
596 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
597 (thanks to Alexander Kjeldaas)
598 * new feature: ignoring the return values of destructive functions
599 like NREVERSE signals a compile-time style-warning.
600 (thanks to Kevin Reid)
601 * new feature: the alignment of alien structure fields can be
602 explicitly specified. (thanks to Cyrus Harmon)
603 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
604 and dump core on SIGQUIT
606 ** incompatible change: threads do not inherit values of specials
607 from their parents (see manual)
608 ** bug fix: threads stacks belonging to dead threads are freed by the
609 next exiting thread, no need to gc to collect thread stacks anymore
610 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
611 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
612 ** bug fix: dynamic variable and thread start related gc lossage
613 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
615 * fixed some bugs revealed by Paul Dietz' test suite:
616 ** SUBTYPEP is slightly more accurate on heinously complicated
617 CONS types where some of the members have uncertain (in the
618 NIL, NIL sense) type relationships to each other.
620 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
621 no longer purified unless :PURIFY T is explicitly specified.
622 ** Non-purified cores are significantly smaller than before
624 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
625 * new feature: timers based on Zach Beane's excellent timer package
626 * added support for the following external formats: koi8-u,
627 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
628 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
629 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
630 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
631 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
632 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
633 * incompatible change: a threaded SBCL will no longer revert to
634 non-threaded mode on non-NPTL systems, but refuse to start entirely.
635 * bug fix: interrupts are disabled until startup is complete; no
636 more sigsegvs when receiving a signal to soon
637 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
639 * bug fix: add a workaround for the memory randomization features in
640 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
641 workaround will only be in effect on systems with the proc filesystem
643 * bug fix: printing objects of type HASH-TABLE signals a
644 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
646 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
647 have been running for over 50 days. (reported by Gilbert Baumann)
648 * bug fix: the logic for getting names of functions gets less
649 confused when confronded with alternate-metaclass
650 funcallable-instances. (reported by Cyrus Harmon)
651 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
652 consistent, even on internal alternate-metaclass objects.
653 * bug fix: flush closure information collected by physical
654 environment analysis prepass before the main pass. (bug reported
656 * bug fix: compiler pack phase does not modify a hashtable, which is
657 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
658 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
659 may be expanded. (reported by Alexander <malishev> on c.l.l)
660 * bug fix: no more style-warnings when compiling code using LAST
661 under high-SPEED low-SPACE settings. (reported by David Wallin
663 * fixed some incompatibilities between SBCL's MOP and the MOP
665 ** the METAOBJECT class is now implemented;
666 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
667 STANDARD-OBJECT, as required;
668 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
669 now compatible (as required by VALIDATE-SUPERCLASS); there
670 remains a consistency requirement over the presence or absence
671 of the FUNCTION class in the superclass list of finalized
672 classes; see the manual for more details;
673 ** the :AROUND method for COMPUTE-SLOTS on
674 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
675 requested slot ordering.
677 ** bug fix: parent thread now can be gc'ed even with a live
679 ** bug fix: binding a special with PROGV to no value is not
680 the same as that symbol not having been bound (thanks to
682 ** bug fix: binding specials is thread safe (thanks to
684 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
685 and SB-SPROF do not die with 'no handler for signal XX in
686 interrupt_handle_now(..)' anymore
687 ** bug fix: WITH-TIMEOUT works with multiple running threads
688 * fixed some bugs revealed by Paul Dietz' test suite:
689 ** ENSURE-GENERIC-FUNCTION should take a method class object for
690 the :method-class keyword argument.
692 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
693 * new port: the Solaris operating system on x86 processors is now
694 mostly supported, though some rough edges in the environment
695 remain. (thanks to Daisuke Homma)
696 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
697 space for its heap. (thanks to Thiemo Seufer)
698 * optimization: SBCL on MIPS platforms now supports dynamic-extent
699 closures. (thanks to Thiemo Seufer)
700 * minor incompatible change: eof selects abort in the debugger.
701 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
702 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
704 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
705 deprecated, and will go away in a future revision of SBCL.
706 * minor incompatible change: GC-ON and GC-OFF are no longer
707 implemented with a counter, it does not matter how many times gc
708 is switched on or off
709 * bug fix: discriminating functions for generic function classes
710 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
711 make invalid assumptions about method precedence order. (reported
713 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
714 platforms. (thanks to Thiemo Seufer)
715 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
716 * bug fix: correct pathname printing with printer escaping is on.
717 (thanks to Kevin Reid)
718 * bug fix: complex VOP definitions in "user-space" no longer trigger
719 package locks. (reported by Zach Beane)
720 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
721 for funcallable-instance functions, and is no different from
723 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
724 characters in the current readtable. (reported by Nicholas Neuss)
725 * bug fix: SUBTYPEP on various CONS types returns more a more
726 accurate acknowledgment of its certainty.
727 * optimizations: REMOVE-DUPLICATES now runs in linear time on
728 lists in some cases. This partially fixes bug 384.
729 * flush all standard streams before prompting in the REPL and the
731 * bug fix: signal handling and triggering gc do not conflict
732 directly anymore, in particular a high frequency sb-sprof does
733 not prevent gc from running
734 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
735 approximation for timezone and DST information between the
736 universal time epoch and the smallest negative 32-bit time_t.
737 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
738 year 1899 so long as the encoded time is non-negative.
739 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
740 the correct answer for non-constant rotate amounts when performing
741 an inline 32-bit rotation.
743 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
744 there is only one thread in the session
745 ** bug fix: memory leak for streams created in one thread and
746 written to in another
747 ** bug fix: lockup when compiled with gcc4
748 ** bug fix: race that allows the gc to be triggered when gc is
750 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
751 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
753 ** bug fix: finished threads are gc'ed properly
754 * fixed some bugs revealed by Paul Dietz' test suite:
755 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
756 has arguments with a different set of applicable methods from
757 the orignal arguments.
758 ** The type error thrown by MAP now has a correct expected-type
760 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
761 name a compiled function.
762 ** Three MISC tests where a large bignum was improperly coerced to
763 a float that couldn't represent that bignum during type
764 derivation were fixed.
765 ** SUBTYPEP can now handle types involving the negation of a
766 list-form FUNCTION type.
767 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
768 as (COMPLEX (AND RATIO (NOT FIXNUM))).
769 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
771 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
772 * New feature: Experimental support for bivalent streams: streams
773 opened with :element-type :default now allow character and binary
774 (unsigned-byte 8) I/O
775 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
776 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
778 * bug fix: no more highly sporadic "couldn't check whether ~S is
779 readable" when reading a stream and an interrupt hits in the middle
780 of a select system call
781 * compiler better recognizes complex arrays (reported by Eduardo
783 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
784 for variables on SBCL built with linkage-tables. (reported by Luis
786 * various error reporting improvements.
787 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
788 (Thanks to Thiemo Seufer)
789 * bug fix: nested reader invokations work correctly
790 * bug fix: it is possible to have simultaneous references to foreign
791 code and foreign data with the same name.
793 ** added x86-64 support
794 ** incompatible change: the threading api now works with thread
795 objects instead of thread ids
796 ** bug fix: threads are protected from signals and interruption when
797 starting up or going down
798 ** bug fix: a race where an exiting thread could lose its stack to gc
799 ** bug fix: don't halt on infinite error in threads if possible
800 ** fixed numerous gc deadlocks introduced in the pthread merge
801 ** bug fix: fixed thread safety issues in read and print
802 ** bug fix: debugger doesn't hang on session lock if interrupted at
803 an inappropriate moment
804 ** bug fix: run-program is now thread safe(r)
805 ** bug fix: inner with-recursive-lock no longer releases the mutex
806 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
807 * fixed some bugs revealed by Paul Dietz' test suite:
808 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
809 EXPECTED-TYPE slots filled.
810 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
812 ** MAKE-CONDITION accepts classes as type-designators.
813 ** COMPILE may never return NIL.
814 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
815 range before calling Unix time functions
817 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
818 * numerous signal handling fixes to increase stability
819 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
820 * minor incompatible change: we now correctly canonize default
821 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
822 as per the MOP, rather than the historical (INITARG INITFUNCTION
823 INITFORM). (reported by Bruno Haible)
824 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
825 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
826 for more information.
827 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
828 pathname is a directory pathname.
829 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
830 * dynamic space size on PPC has been increased to 768Mb. (thanks to
832 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
833 :METACLASS argument in addition to a class name. (reported by
834 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
835 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
836 (reported by Bruno Haible; patch from Gerd Moellmann)
837 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
839 * bug fix: more cleanups to the floating point exception handling on
840 x86-64 (thanks to James Knight)
841 * bug fix: the compiler does not try to constant fold calls of
842 COERCE and BIT-* functions when they return freshly constructed
843 objects. (reported by Nikodemus Siivola and Paul Dietz)
844 * optimization: improved the MIPS versions of generic (in the
845 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
846 * optimization: direct conversion of (unsigned-byte 32) to floats on
847 the PowerPC platform.
848 * optimization: structure instances with raw slots now use less
849 memory, and probably show better memory locality. (thanks to
851 * optimization: DYNAMIC-EXTENT declarations for lists and closures
852 are treated as requests for stack allocation on the x86-64,
853 Alpha-32, PPC and SPARC platforms.
854 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
855 the wrong file descriptor; implementation of SOCKET-OPEN-P.
856 (thanks to Tony Martinez)
858 ** gcing a dead thread can no longer lead to lockups
859 ** threads block signals until they are set up properly
860 ** errno is no longer shared by threads
861 ** interrupt-thread restores the eflags register on x86
862 ** fixed some lockups due to gc/thread interaction
863 * fixed some bugs revealed by Paul Dietz' test suite:
864 ** invalid dotted lists no longer raise a read error when
866 ** signal an error if a symbol that names a declaration is used
867 as the name of a type, or vice versa
868 ** allow using the (declare (typespec var*)) abbreviation for
869 (declare (type typespec var*)) with all type specifiers
870 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
871 ** always return NIL from PPRINT-POP when OBJECT is NIL
872 ** don't signal errors when pretty-printing malformed LABELS,
873 FLET or MACROLET forms
874 ** declarations in a DOLIST body are also in scope for the
876 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
878 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
881 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
882 * fixed cross-compiler leakages that prevented building a 32-bit
883 target with a 64-bit host compiler.
884 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
885 opened with :IF-EXISTS :OVERWRITE.
886 * fixed bug 281: error for an invalid qualifier in a short-form method
887 combination method is not signalled until the faulty method is called.
888 * bug fix: iteration variable type inferrer failed to deal with open
889 intervals. (reported by Alan Shields)
890 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
891 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
892 or more runtime options were provided to the sbcl binary.
893 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
894 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
895 * optimization: there's now a fast-path for fixnum arguments in the
896 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
897 * optimization: the code generated on x86-64 is more compact thanks
898 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
899 * bug fix: floating-point exception handling now partly works on
900 x86-64. (Thanks to James Knight)
901 * improvement to the MIPS backend from Thiemo Seufer: C-style
902 64-bit long long arguments and return values to alien functions
904 * fixed some bugs revealed by Paul Dietz' test suite:
905 ** the type-error signalled from WARN has a filled-in DATUM slot.
906 ** the type-error required when a stream is not associated with
907 a file has the stream as its datum.
908 ** type-errors on single-floats on x86-64 no longer have
909 :INVALID-OBJECT as the datum
910 ** the type-errors signalled for invalid function names now have
911 a correct expected type
912 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
913 for structures defined with a :TYPE. Documentation strings for
914 typed structures are no longer immediately discarded
915 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
916 broadcast streams and synonym streams. FILE-LENGTH now also works
917 on broadcast streams.
919 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
920 * incompatible change: the --noprogrammer option, deprecated since
921 version 0.7.5, has been removed. Please use the equivalent
922 --disable-debugger option instead.
923 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
925 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
926 inoperational for a while now) has been completely removed.
927 * null lexical environments are now printed as #<NULL-LEXENV>,
928 significantly reducing the amount of clutter in typical backtraces.
929 * documentation on weak pointers, finalization, and after GC hooks
930 has been added to the manual.
931 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
932 as other specialized array types, is much faster. SUBSEQ and
933 COPY-SEQ on such arrays have also been sped up.
934 * optimization: EQL is now more efficient when at least other argument
935 is known to be of type (OR FIXNUM (NOT NUMBER)).
936 * fixed bug: the runtime is now less vulnerable to changes in the
937 size of the SBCL object on OS X, and virtual memory is reserved for
938 all spaces that need to be at a fixed address.
939 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
940 * fixed bug: finalizers and after GC hooks that cause consing are now
942 * fixed bug: compiler error messages and summaries are now printed to
943 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
944 * fixed inference of the upper bound of an iteration variable.
945 (reported by Rajat Datta).
946 * fixed bug 211e: calling local functions with duplicated constant
947 keyword argument no longer causes a bogus style warning about an
949 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
950 ftype declaration to be disregarded. (reported by Dave Roberts)
951 * fixed bug 373: caused by erronous compilation of references to alien
952 variables in the runtime on ppc/darwin.
953 * fixed bug 376: CONJUGATE type deriver.
954 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
955 (reported by Baughn on #lisp)
956 * a cross-compiler bug on non-x86 platforms has been identified and
957 fixed. (thanks to Bruno Haible)
958 * improvements to the MIPS runtime code for increased stability.
959 (thanks to Thiemo Seufer)
960 * increased the maximimum compact environment size to allow
961 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
962 * partial workaround for bug 135: don't name the function we're
963 calling for hairy cases of EVAL, so as not to accumulate one environment
964 entry per call to EVAL. (reported by Kevin Reid)
965 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
966 * optimization: type testing for non-vector arrays should be faster.
967 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
969 * bug fix: setting 31st element of a bit vector to zero did not work
971 * bug fix: redefining a class definition which failed due to a
972 previous accessor / function clash now works (but see BUGS entry
973 #380 for more problems in this area). (thanks to Zach Beane)
974 * the long form of DEFINE-METHOD-COMBINATION disables method group
975 checking when given a single method group with pattern *. (thanks
977 * on x86 compiler supports stack allocation of results of simple
978 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
979 * support for building and running on Mac OS X 10.4 "Tiger" has been added
980 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
981 * fixed some bugs related to Unicode integration:
982 ** the restarts for recovering from input and output encoding
983 errors only appear when there is in fact such an error to
985 * fixed some bugs revealed by Paul Dietz' test suite:
986 ** MISC.549 and similar: late transformation of unsafe type
987 assertions into derived types caused unexpected code
989 ** SCALE-FLOAT type deriver is less wrong.
990 ** type derivers for EXP, LOG and similar functions compute result
991 types for complex arguments better.
992 ** (MISC.563) CONJUGATE type deriver works for very restricted
994 ** out-of-line type testers for character strings are available.
995 ** EQUAL compiler transform understands specialness of objects
997 ** accessing double-floats stored on the stack now works on x86-64.
998 ** debugger internals could sometimes create invalid lispobjs,
999 resulting in GC crashes.
1000 ** MISC.548: type check weakening can convert required type into
1002 ** initialization forms for bindings are not in scope of free special
1005 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1006 * incompatible change: thread support for non-NPTL systems has
1007 been removed - locking is buggy and unreliable. A threaded
1008 SBCL build will now warn at startup and refuse to create
1009 new threads, unless futex support is detected in the kernel
1010 * incompatible change: the top level REPL now has only an ABORT
1011 restart associated with it, not TOPLEVEL and ABORT as it used to.
1012 TOP and TOPLEVEL are now available as debugger commands for
1013 returning to the top level.
1014 * incompatible change: forms evaluated in the REPL now use the
1015 global optimization policy.
1016 * incompatible change: user- and system-initialization files are
1017 no longer processed with LOAD, but by READ and EVAL; hence the
1018 global optimization policy, startup package, readtable, etc,
1020 * The .fasl file format number has been incremented because of
1021 various incompatible changes.
1022 * internal entry point details and argument counts no longer appear
1023 in backtraces unless explicitly requested by setting
1024 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1025 * built-in and standard functions no longer have names like "top
1026 level local call to FOO".
1027 * fixed bug 32: functions defined in non-null lexical environments
1028 now have more legible printed representation
1029 * fixed bug 33: functions defined in non-null lexical environemnts
1030 are now more amenable to inspection by INSPECT.
1031 * workaround for bug 354: XEPs no longer appear in backtraces unless
1032 explicitly requested.
1033 * fixed bug: receiving the signal which results from attempting to
1034 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1035 SIGBUS on other *BSDs) on architectures where the C stack is also
1036 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1037 to debugger confusion or wild instability. (reported by Cheuksan
1039 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1040 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1041 (reported by Lutz Euler)
1042 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1043 compiled code. (reported by Paul Dietz)
1044 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1045 specialized parameter to a method to something that is not TYPEP
1046 the specializer is now possible.
1047 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1048 face of package deletion.
1049 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1050 pathname. (reported by David Tolpin on c.l.l)
1051 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1052 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1053 STRING-STREAM and FILE-STREAM, respectively.
1054 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1055 than previously; in addition, its test suite is now run on build.
1056 (thanks to Luke Gorrie)
1057 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1058 * optimization: added a immediate representation for single-floats
1060 * fixed some bugs revealed by Paul Dietz' test suite:
1061 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1062 ** attempting to create a package with a colliding nickname causes
1063 correctable errors to be signalled.
1064 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1065 ** several x86-64 backend bugs related to sign-extension of immediate
1068 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1069 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1070 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1072 * fixed loading of multiply forward-referenced layouts.
1073 (thanks to Cheuksan Wang)
1074 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1075 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1076 (see COMPILE-FILE documentation for details of :PRINT option)
1077 * fixed bugs 19 and 317: fixed-format floating point printing is
1078 more accurate. This also fixes a bug reported by Adam Warner
1079 related to the ~@F format directive.
1080 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1082 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1083 dispatch table if the from-char is a dispatch macro character.
1084 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1085 by the wordsize no longer ignore the last word. (reported by Lutz
1087 * fixed bug in type checking of dynamic-extent variables. (reported
1089 * optimization: sequence traversal functions use their freedom to
1090 coerce function designators to functions.
1091 * optimization: code with many calls to CLOS methods specialized on
1092 CLOS classes has had redundant type checks removed.
1093 * optimization: added declarations to speed up operations that access
1094 the internal character database (for example STRING-UPCASE)
1095 * optimization: comparison operations between floats and sufficiently small
1096 fixnums no longer create extra rationals
1097 * fixed some bugs related to Unicode integration:
1098 ** portions of multibyte characters at the end of buffers for
1099 character-based file input are correctly transferred to the
1100 start of the buffer at the next read.
1101 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1102 passing it through to OPEN.
1103 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1104 argument given to internal calls to OPEN.
1105 ** the built-in comment readers (introduced by character sequences
1106 ";" and "#|") are more forgiving to encoding errors; they will
1107 STYLE-WARN and then attempt to resync the stream at a character
1108 boundary. (thanks to Teemu Kalvas)
1109 * fixed some bugs in the x86-64 port:
1110 ** Negative short int return values from c-calls are sign-extended
1112 ** The stack is aligned to 16-bytes for c-calls, as required by
1113 the ABI. (thanks to Cheuksan Wang)
1114 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1115 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1116 for enums. (thanks to Vincent Arkesteijn)
1117 ** Multiple small optimizations and bugfixes for floating point
1119 * fixed some bugs revealed by Paul Dietz' test suite:
1120 ** Space, Tab, Linefeed, Return and Page have the invalid
1121 secondary constituent character trait.
1122 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1124 ** WITH-INPUT-FROM-STRING should only update the index place on
1126 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1127 works more reliably.
1128 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1129 with one-dimensional arrays with fill pointers.
1130 ** TYPE-OF failed on a complex with an integer realpart and a
1132 ** compiler failure during type inference for the code of form
1133 (IF (EQL X (THE ...)) ...) (MISC.535).
1135 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1136 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1137 platform. The port supports 61-bit fixnums, large memory spaces
1138 and reloading shared object files.
1139 * enhancement: saving cores with foreign code loaded is now
1140 supported on ppc/Darwin in addition to the previously supported
1142 * enhancement: the statistical profiler now walks deeper into the
1143 call stack for more meaningful call-graphs and accrued time
1144 reports (x86/x86-64 only). It also now reports time spent in
1146 * enhancement: it is now possible to trace most individual methods
1147 of a generic function in addition to tracing the generic function
1149 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1151 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1152 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1153 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1154 produces an error. (thanks to Vincent Arkesteijn)
1155 * bug fix: NAMESTRING on pathnames with :WILD components in their
1156 directories works correctly. (thanks to Artem V. Andreev)
1157 * fixed bug 125: compiler preserves identity of closures. (reported
1159 * bug fixed: functions with &REST arguments sometimes failed with
1160 "Undefined function" when compiled with (DEBUG 3). (reported by
1162 * bug fix: overflow during compiling of setting element of a bit
1163 vector with constant index and value. (reported by Timmy Douglas)
1164 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1165 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1166 * on x86 compiler partially supports stack allocation of dynamic-extent
1168 * GO and RETURN-FROM do not check the extent of their exit points
1169 when compiled with SAFETY 0.
1170 * fixed some bugs related to Unicode integration:
1171 ** encoding and decoding errors are now much more robustly
1172 handled; it should now be possible to recover even from invalid
1173 input or output to the terminal. (thanks to Teemu Kalvas)
1174 ** provided a first cut at implementing STRING-TO-OCTETS and
1175 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1176 ** altered the SB-MD5 contributed module slightly, changing the
1177 interface just enough for it to be supportable for builds where
1178 lisp characters are not eight bits.
1179 * fixed some bugs revealed by Paul Dietz' test suite:
1180 ** the FORMATTER-generated functions for ~V[ conditionals require
1181 the correct number of arguments.
1182 ** READ-FROM-STRING returns the mandated second value when applied
1183 to displaced strings.
1184 ** the #\Rubout and #\Backspace characters are treated as invalid
1185 constituent characters by the tokenizer.
1187 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1188 * new feature: reloading changed shared object files with
1189 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1190 * new feature: references to foreign variables and functions
1191 can now be compiled and loaded before the corresponding shared
1192 object file is loaded, as long as the foreign definitions are
1193 available at runtime.
1194 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1195 supported. (thanks to Dan Debertin)
1196 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1197 just keywords. (thanks to Vincent Arkesteijn)
1198 * fixed bug #331: structure-class instances corresponding to
1199 DEFSTRUCT forms are now created eagerly.
1200 * fixed bug #345: backtraces from calls to undefined functions work
1201 on x86 as well. Related bug #61 is now also partially fixed on x86
1202 (backtraces from throws to unknown catch tags.)
1203 * bug fix: lambda-list parsing is now stricter vrt. order and number
1204 of lambda-list keywords.
1205 * bug fix: as specified by AMOP, an error is signalled if a
1206 class-option appears multiple times in a DEFCLASS form. (reported
1208 * bug fix: RANDOM can be compiled when the compiler derives the type
1209 of its numeric argument as a disjoint set of small integers.
1210 (reported by Paul Dietz)
1211 * bug fix: starting a core saved with shared objects loaded when
1212 those objects are not available no longer causes threaded SBCL to
1213 hang. (reported by Sean Ross)
1214 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1216 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1217 argument, which must always be NIL. (reported by Kalle Niemitalo)
1218 * bug fix: printing 1.0d+23 no longer results in an error.
1219 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1220 * bug fix: structure slot setters preserve evaluation order. (thanks
1222 * fixed some bugs related to Unicode integration:
1223 ** RUN-PROGRAM can allow its child to take input from a Lisp
1224 stream. (reported by Stefan Scholl)
1225 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1226 locales. (reported by Ken Causey)
1227 * fixed some bugs revealed by Paul Dietz' test suite:
1228 ** INCF, DECF and REMF evaluate their place form as specified in
1230 ** FORMATTER expands ~{ ~} iteration directives with V or #
1231 parameters correctly.
1232 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1233 consequent uses no arguments correctly.
1234 ** the system has a partial understanding of the (COMPLEX RATIO)
1236 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1239 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1240 * new feature: a build-time option (controlled by the :SB-UNICODE
1241 keyword feature, enabled by default) for building the system with
1242 support for the entire 21-bit character space defined by the
1244 * new feature: the system now has rudimentary external-format
1245 support; the primary user-visible change at this time is that
1246 characters with the high bit set (such as lower-case-e-acute) will
1247 print correctly to a terminal in a UTF-8 environment.
1248 * minor incompatible change: BASE-CHAR no longer names a class;
1249 however, CHARACTER continues to do so, as required by ANSI.
1250 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1251 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1252 has been moved to the SB-EXT package (temporarily re-exported from
1254 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1255 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1257 * fixed bug #351: better error-handlind and reporting for malformed
1259 * fixed bug #350: bignum-printing is now more memory-efficient,
1260 allowing printing of very large bignums, eg. (expt 2 10000000).
1261 (reported by Bruno Haible)
1262 * fixed bug #302: better primitive-type selection for intersection
1264 * fixed bug #308: non-graphic characters now all have names, as
1265 required. (reported by Bruno Haible)
1266 * bug fix: redefining a class with different superclasses now correctly
1267 removes it from the direct-subclasses of its previous superclasses.
1268 (reported by David Morse)
1269 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1270 new value now works. (reported by Bruno Haible)
1271 * bug fix: correct canonicalization of multiple non-standard slot
1272 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1273 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1274 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1275 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1276 now exists, an signals an error.
1277 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1278 during macroexpansion for non-iteration variables as well. (reported
1279 by Bruno Haible for CMUCL)
1280 * bug fix: Cyclic structures and unprintable objects in compiler
1281 messages no longer cause errors. (reported by Bruno Haible)
1282 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1283 and READ-FROM-STRING all now return a primary value of NIL if
1284 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1285 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1286 (reported by Bruno Haible for CMUCL)
1287 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1288 do not designate a condition. (reported by Bruno Haible for
1290 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1291 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1292 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1293 permitting resolution in favour of any of the conflicting symbols.
1294 (reported by Bruno Haible for CMUCL)
1295 * bug fix: EQUAL compiler optimizations is less aggressive on
1296 strings which can potentially compare true despite having distinct
1297 specialized array element types.
1298 * bug fix: unit enumerations can be defined without dividing by
1299 zero. (thanks to Vincent Arkesteijn)
1300 * FORMAT compile-time argument count checking has been enhanced.
1301 (report from Bruno Haible for CMUCL)
1302 * a partial workaround for the bug 262: the compiler does not try to
1303 inline-expand a local function doing RETURN-FROM from a deleted
1304 BLOCK. (thanks to Peter Denno for the bug report and to David
1305 Wragg for the simple test case)
1306 * fixed some bugs revealed by Paul Dietz' test suite:
1307 ** RENAME-PACKAGE allows all package designators as new package
1309 ** constraint propagation and lambda variable substitution are
1310 more cautious in dealing with partially deleted code.
1311 ** compiler sometimes lost reoptimization passes.
1312 ** CERROR, given a condition as condition designator, passes its
1313 remaining arguments to the continue format control without
1315 ** Case-altering FORMAT directives work correctly on non-ASCII
1317 ** The REAL type specifier handles bounds outside the floating
1318 point ranges without signalling FLOATING-POINT-OVERFLOW.
1319 ** Functions with IR1-transformations can create intercomponent
1320 references to global functions.
1321 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1323 ** FORMAT ~R treats a nil value for its first parameter correctly.
1325 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1326 * enhancement: saving cores with foreign code loaded is now
1327 supported on x86/NetBSD and sparc/Linux in addition to the previously
1328 supported platforms.
1329 * bug fix: on some platforms repeated installations caused multiple
1330 copies of HTML documentation to be installed -- should not happen
1331 any more. (reported by Stefan Scholl)
1332 * bug fix: parsing self-recursive alien record types multiple times
1333 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1334 original patch by Helmut Eller for CMUCL)
1335 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1336 (thanks to Richard Kreuter)
1337 * bug fix: defining classes whose accessors are methods on existing
1338 generic functions in other (locked) packages no longer signals
1339 bogus package lock violations. (reported by François-René Rideau)
1340 * bug fix: special variables as DEFMETHOD parameters no longer have
1341 associated bogus type declarations. (reported by David Wragg and
1343 * bug fix: read-write consistency on streams of element-type
1344 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1345 * bug fix: redefiniton of the only method of a generic function with
1346 no DEFGENERIC no longer emits a full WARNING. In addition,
1347 redefinition of generic functions with no DEFGENERIC to an
1348 incompatible lambda list now signals an error. (thanks to Zach
1350 * bug fix: DEFGENERIC now works even when there's a function of the
1351 same name in an enclosing lexical environment. (thanks to Zach
1353 * fixed compiler failure, caused by instrumenting code during
1354 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1355 * optimization: added loop analysis and improved register allocation
1356 * fixed some bugs revealed by Paul Dietz' test suite:
1357 ** POSITION on displaced vectors with non-zero displacement
1358 returns the right answer.
1359 ** (SIMPLE-STRING) is a valid type specifier for sequence
1361 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1363 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1364 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1366 ** The justification version of the FORMAT ~< directive treats
1367 non-zero minpad parameter correctly.
1369 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1370 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1371 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1372 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1373 the supported interface.
1374 * new feature: Single-stepping of code compiled with DEBUG 2 or
1375 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1376 * new feature: saving cores with foreign code loaded is now
1377 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1378 Timothy Moore's work for CMUCL)
1379 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1380 parameters to * instead of NIL if no initform is supplied.
1381 (reported by Johan Bockgaard)
1382 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1383 correctly when FUNCALL appears as the car of the form. Note:
1384 despite this FUNCALL forms are not currently subject to
1385 compiler-macro expansion. (port of Raymond Toy's fix for the
1386 same from CMUCL, reported by Johan Bockgaard)
1387 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1388 (thanks for Teemu Kalvas)
1389 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1390 case instead of terminating the iteration (thanks for Julian
1391 Squires, Sean Champ and Raymond Toy)
1392 * bug fix: incorrect expansion of defgeneric that caused a style
1393 warning. (thanks for Zach Beane)
1394 * bug fix: slot accessor effective method computation works properly
1395 for classes with multiple non-standard applicable methods on
1396 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1397 * on x86 compiler supports stack allocation of results of LIST and
1398 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1399 CMUCL implementation by Gerd Moellmann)
1400 * fixed some bugs revealed by Paul Dietz' test suite:
1401 ** FORMAT strings with both the ~<~:;~> form of the justification
1402 directive and pretty-printing directives cause an error.
1404 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1405 * incompatible change: the internal functions
1406 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1407 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1408 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1409 instead of the old functions.
1410 * new feature: on platforms where "dladdr" is available foreign
1411 function names now appear in backtraces. (based on Helmut Eller's
1413 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1414 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1416 * documentation: ASDF manual is now distributed with SBCL.
1417 * bug fix: SBCL can now load its contributed modules with REQUIRE
1418 even if the system-provided entries have been removed from
1419 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1421 * bug fix: backtraces involving undefined functions or assembly
1422 routines are more informative. (thanks to Brian Downing)
1423 * bug fix: mutually referent alien structures now work correctly.
1424 (reported by Rick Taube)
1425 * bug fix: structures defined by WITH-ALIEN can be referred to
1426 within other definitions in the same WITH-ALIEN.
1427 * bug fix: division operators (MOD, TRUNCATE and the like) with
1428 constant zero divisors and integer dividends no longer generate
1430 * bug fix: provide default methods for INPUT-STREAM-P and
1431 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1432 * bug fix: improve the detection and resolution of MOP metacycles
1433 (where effective method computation depends on the generic function
1434 having its effective method computed). (reported by Bruno Haible)
1435 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1436 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1437 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1438 * bug fix: pathnames with relative directory components can be
1439 represented relative to default pathnames.
1440 * optimization: in taking the GCD of bignums, reduce the two bignums
1441 to approximately the same size (using Euclid's algorithm) before
1442 applying the more sophisticated binary GCD. (thanks to Juho
1444 * optimization: COUNT on bitvectors now operates word-at-a-time.
1445 * optimization: ASH with a positive, but not necessarily constant,
1446 (leftwards) shift, when in a modular context, is compiled to a
1448 * fixed some bugs revealed by Paul Dietz' test suite:
1449 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1450 if the corresponding argument is NIL.
1451 ** FORMAT directives accepting a minpad parameter treat negative
1453 ** literal commas as character parameters to FORMAT directives are
1455 ** literal spaces directly after ~<Newline> directives within a
1456 format-logical-block (~:< ~@:>) do not induce :FILL-style
1457 conditional newlines.
1458 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1459 as specified: it no longer includes conditional newlines).
1460 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1462 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1463 :PER-LINE-PREFIX argument does not evaluate to a string.
1465 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1466 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1467 the manual for details; for now, package locks can be disabled by
1468 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1469 if no major problems are found then it is likely that they will be
1470 compiled in unconditionally.
1471 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1472 unsupported operators on all platforms. To load a shared library
1473 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1474 object file, link it into a shared library outside of SBCL and
1475 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1477 * bug workaround: ROOM T and the GC were not working together
1478 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1479 reporting facility aren't preserved. That reporting has been
1480 disabled, so now until and unless someone figures out how to make it
1481 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1482 * minor incompatible change: as threatened around sbcl-0.8.0, the
1483 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1484 The symbols are also exported from SB-PCL for backwards
1485 compatibility, but more so than before SB-PCL should be treated as
1486 an implementation-internal package.
1487 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1489 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1490 It is known as of this release not to work on the Alpha, however.
1491 * fixed bug #167: errors signalled due to illegal syntax in method
1492 bodies are now more legible.
1493 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1494 designators and can hence be used with TYPEP.
1495 * fixed bug #333: CHECK-TYPE now ensures that the type error
1496 signalled, if any, has the right object to be accessed by
1497 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1498 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1499 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1501 * fixed bug #334: programmatic addition of slots using specialized
1502 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1503 and :ALLOCATION :CLASS slots.
1504 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1505 float exponents. (rereported by Peter Seibel)
1506 * fixed a bug: #\Space (and other whitespace characters) are no
1507 longer considered to be macro characters in standard syntax by
1508 GET-MACRO-CHARACTER.
1509 * fixed bug: initialization of condition class metaobjects no longer
1510 causes an instance of the condition to be created. (reported by
1512 * fixed bug: it is now possible to have slots such that
1513 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1514 description is neither :INSTANCE nor :CLASS.
1515 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1516 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1517 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1518 non-standard SLOT-DEFINITION-ALLOCATION values.
1519 * fixed bugs: various race conditions handling exiting threads.
1520 CL-PPCRE's thread torture test now passes.
1521 * fixed arguably-a-bug: GC time proportional to number of threads in
1522 system even when most of them are idle
1523 * optimization: improved performance of BIT and SBIT on bit-vectors.
1524 * .fasl file incompatibility: The fasl file version number has
1525 been incremented because of changes associated with package locks.
1527 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1528 * minor incompatible change: the system no longer provides
1529 optimization hints (conditions which are TYPEP
1530 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1531 mode; these hints are still emitted when higher SPEED optimization
1533 * new contrib module: a sampling profiler (profiling by statistical
1534 sampling, rather than by instrumenting functions) is available as
1535 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1536 * the behaviour of the standard function ED is now customizeable by
1537 third parties through a hook variable: see ED's documentation
1538 string for information on the protocol.
1539 * the compiler no longer emits efficiency notes for (FUNCALL X)
1540 when the type of X is uncertain under default optimization
1542 * fixed bug 276: mutating a binding of a specialized parameter to a
1543 method to something that is not TYPEP the specializer is now
1545 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1546 exhibit the required behaviour on the x86 platform. (thanks to
1547 Peter van Eynde, Eric Marsden and Bruno Haible)
1548 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1549 even for difficult arguments. (reported by Peter Graves)
1550 * fixed bug 141a: the backquote printer now descends quoted
1552 * fixed another bug in backquote printing: no more destructive
1553 modification of the form's list structure. (reported by Brian
1555 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1556 move between its address being taken and the call to
1557 interrupt_thread, fixing a crashing race condition.
1558 * the SB-POSIX contrib implementation has been adjusted so that it
1559 no longer exhibits ridiculously poor performance when constructing
1560 instances corresponding to C structs.
1562 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1563 * minor incompatible change: the sb-grovel contrib now treats C
1564 structures as alien (in the sense of SB-ALIEN) objects rather than
1565 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1566 has implications for memory management of client code
1567 (sb-grovel-returned objects must now be manually managed) and for
1568 type safety (alien objects now have full types).
1569 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1570 used to control emission of compiler diagnostics, rather than the
1571 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1572 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1573 quality should be considered deprecated.
1574 * install.sh now installs the user manual as well
1575 * (not quite a new documentable feature, but worth considering in
1576 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1577 beginnings of a semantically meaningful condition hierarchy is
1578 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1580 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1581 designator as the defaults argument.
1582 * fixed bug: Displaced arrays whose displaced-to array has become
1583 too small now cause ARRAY-DIMENSION to signal an error, providing
1584 for safer bounds-checking. (reported by Bruno Haible)
1585 * fixed bug: DEFCLASS slot definitions with identical :READER and
1586 :WRITER names now signal a reasonable error. (reported by Thomas
1588 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1590 * fixed bug: Invalid slot specification errors now print correctly.
1591 (thanks to Zach Beane)
1592 * fixed bug 320: Shared to local slot value transfers in class
1593 redefinitions now happen corrently from superclasses as
1594 well. (reported by Bruno Haible)
1595 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1597 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1598 improper lists correctly. (reported by Bruno Haible)
1599 * fixed bug 313: source-transform for <fun-name> was erroneously
1600 applied to a call of a value of a variable with name <fun-name>.
1601 (reported by Antonio Menezes Leitao)
1602 * fixed bug 307: The obsolete instance protocol ensures that
1603 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1604 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1605 remove dead unknown-values globs from the middle of the stack.
1606 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1607 easier to resume long computations after using *BREAK-ON-SIGNALS*
1608 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1609 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1610 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1611 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1612 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1613 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1615 * fixed a (fairly theoretical) bug in string printing: if
1616 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1617 does not have array-element-type equal to the most general string
1619 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1620 function name. (thanks to Nikodemus Siivola)
1621 * fixed bug: compile-time format string checker failed on
1622 non-closed ~{. (reported by Thomas F Burdick)
1623 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1624 don't warn on legal loop code involving more than one aggregate
1625 boolean. (thanks to Nikodemus Siivola)
1626 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1627 in keyword position to MAKE-PACKAGE was not being reported as
1629 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1630 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1632 * fixed bugs 280 and 312: the checking for multiple definitions in a
1633 file is less likely to become confused by uses of inline
1635 * fixed bug: the #S reader macro performs the keyword coercion
1636 specified for slot names. (reported by Kalle Niemitalo)
1637 * fixed bug: lambda lists may contain symbols whose names start with
1638 & but are not lambda-list-keywords; their occurrence triggers a
1640 * fixed bug 321: define-method-combination argument lambda lists do
1641 not cause invalid code to be generated when &optional or &aux
1642 variables have default values. (reported by Bruno Haible)
1643 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1644 have CLOS classes; this appears also to have fixed reported
1645 instability in stack exhaustion detection.
1646 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1647 MUFFLE-WARNING when no associated restart is present is now
1649 * optimization: rearranged the expansion of various defining macros
1650 so that each expands into only one top-level form in a
1651 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1653 * optimization: used a previously little-used slot in symbols to
1654 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1656 * fixed some bugs revealed by Paul Dietz' test suite:
1657 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1659 ** Fixed an optimization bug related to inheritance of initforms
1660 from local to shared slots.
1661 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1662 ** CAST optimizer forgot to flush argument derived type.
1663 ** print/read consistency on floats is now orders of magnitude
1664 more likely. (thanks also to Bruno Haible for a similar report
1666 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1667 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1668 for objects of type REAL. Make it so.
1669 ** SXHASH is specified (infelicitously) to respect similarity,
1670 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1671 it so. (thanks to Markus Ziegler)
1672 ** on the Alpha, the compiler succeeds in compiling functions
1673 returning a known number of arguments greater than 63.
1674 ** fixed handling of invalid NIL arguments in keyword position
1676 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1678 ** provided a readably-printable representation for RANDOM-STATE
1680 ** ensured that pathnames, where they have a namestring, always
1681 print using #P"..." syntax.
1683 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1684 * Support for the forthcoming 2.0 version of the NetBSD kernel
1685 running on x86 hardware has been added. (thanks to Perry
1686 E. Metzger most immediately, and others for their past work)
1687 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1688 current release version; SBCL's OpenBSD support had been broken
1689 since about the time of OpenBSD's switch to ELF binary format.)
1690 * [placeholder for DX summary]
1691 ** user code with &REST lists declared dynamic-extent, under high
1692 speed or space and low safety and debug optimization policy.
1693 * The manual has been converted to Texinfo format and the debugger
1694 chapter from the cmucl manual has been added.
1695 * A facility has been added to extract documentation strings from
1696 sbcl and store them as Texinfo-formatted snippets for inclusion in
1697 the manual (via Texinfo's @include directive)
1698 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1699 the test case to Dave Roberts)
1700 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1701 pointers. (reported by Sean Ross)
1702 * bug fix: PROFILE output is printed nicely even for large numerical
1703 values. (thanks to Zach Beane)
1704 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1705 greater than 32 handle EOF correctly.
1706 * bug fix: on X86 an immediate argument of the IMUL instruction is
1707 correctly printed in disassembly. (thanks to Lutz Euler)
1708 * bug fix: class slots in redefined classes preserve their old
1709 values. (thanks to Bruno Haible and Nikodemus Siivola)
1710 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1711 succeeds. (reported by Marco Baringer)
1712 * fixed some bugs revealed by Paul Dietz' test suite:
1713 ** READ-SEQUENCE now works on ECHO-STREAMs.
1714 ** RATIONALIZE works more according to its specification. (thanks
1717 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1718 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1719 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1720 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1721 should matter to you only if you rebind the printer control
1722 variables and then find you want different bindings in the
1723 debugger than in the ordinary execution of your program.)
1724 * The runtime build system has been tweaked to support building
1725 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1726 assembler and linker. (thanks to Nikodemus Siivola)
1727 * Unbound, undefined, undeclared variables now trigger full
1728 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1729 more often programmer error than deliberate exploitation of undefined
1731 * optimization: the hash algorithm for strings has changed to one
1732 that is less vulnerable to spurious collisions. (thanks to Juho
1734 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1735 needless bounds checking. (thanks to Juho Snellman)
1736 * optimization: implemented multiplication as a modular
1737 (UNSIGNED-BYTE 32) operation on the PPC backend.
1738 * fixed some bugs revealed by Paul Dietz' test suite:
1739 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1741 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1742 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1743 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1745 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1747 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1749 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1750 their output stream on EOF from read.
1751 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1752 have been read to end-of-file.
1753 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1755 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1756 description of determination of which consecutive characters
1758 ** Printing the "Space" character with escaping on now yields "#\\ ",
1759 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1760 ** Reading floating-point numbers with *READ-BASE* set to a number
1761 less than 10 works correctly.
1762 ** Reading floating-point numbers with *READ-BASE* set to a number
1763 more than 10 works correctly.
1764 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1765 the readtable currently in effect.
1767 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1768 * minor incompatible change: parsing of namestrings on a physical
1769 (Unix) host has changed; numbers after the final #\. in a
1770 namestring are no longer interpreted as a version field. This is
1771 intented to be largely invisible to the user, except that the
1772 meaning of the namestring "*.*.*" has changed: it now refers to a
1773 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1774 should usually be replaced by
1775 (make-pathname :name :wild :type :wild :version :wild)
1776 with the added benefit that this is more likely to be portable.
1777 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1778 option to OPEN now signals an error if the file being opened
1779 exists; this may have an impact on existing code.
1780 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1781 signals received, on the PowerPC platforms (both Linux and
1782 Darwin). (thanks to Pierre Mai for pointing out the location of
1784 * several fixes on OS X: The system now builds and runs cleanly on
1785 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1786 (thanks to Brian Mastenbrook)
1787 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1788 second-resolution: integer multiples of 1/3600 between -24 and 24.
1789 (thanks to Vincent Arkesteijn)
1790 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1791 type when called with 1 argument; PEEK-CHAR checked type of
1792 PEEK-TYPE only after having read first character from a
1793 stream. (reported by Peter Graves)
1794 * bug fix: the garbage collector now has much better locality
1795 behaviour, and in particular no longer treats all memory as being
1796 exhausted when many small objects point to each other in a deeply
1798 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1799 recognized as being TYPEP their class.
1800 * bug fix: the PUSHNEW documentation string has been corrected.
1801 (thanks to Vincent Arkesteijn)
1802 * bug fix: defaulting of the value for the last of an atypically
1803 large number of multiple values being bound was not being
1804 performed correctly on the Alpha or PPC platforms
1805 * optimization: implemented multiplication as a modular
1806 (UNSIGNED-BYTE 32) operation on the x86 backend.
1807 * optimization: SEARCH on simple-base-strings can now be open-coded.
1808 (see also contrib/compiler-extras.lisp for inspiration for
1809 teaching the compiler about the Boyer-Moore algorithm).
1810 * value, returned by MAX (and MIN) called with several EQUALP, but
1811 not EQL, arguments now does not depend on compiler settings.
1812 * fixed some bugs revealed by Paul Dietz' test suite:
1813 ** in stack analysis liveness information is propagated from
1814 non-local entry points.
1815 ** pathwise CAST removing failed when the CAST node did not start
1817 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1818 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1820 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1821 host is already defined.
1822 ** RENAME-FILE works on streams instead of signalling an internal
1824 ** PEEK-CHAR uses the current readtable when determining whether
1825 or not a character is whitespace.
1826 ** MERGE-PATHNAMES handles the case when the pathname does not
1827 specify a name while the default-pathname specifies a version.
1828 ** Pathnames now stand a better chance of respecting print/read
1830 ** Attempting to use standardized file system operators with a
1831 pathname with invalid :DIRECTORY components signals a
1833 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1835 ** DIRECTORY on logical pathnames is more correct.
1836 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1837 signal a TYPE-ERROR if their argument is not a stream.
1838 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1839 designator argument does not designate a stream.
1840 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1841 examining the synonym.
1842 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1844 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1845 element-type larger than ([UN]SIGNED-BYTE 32).
1847 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1848 * When built with the :SB-FUTEX feature, threaded builds now take
1849 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1850 for faster/more reliable mutex and condition variable support.
1851 * Incompatible change (but one you probably shouldn't have been using
1852 anyway): the interface and code for arbitrating between multiple
1853 threads in the same user session has been redesigned.
1854 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1855 error when called without an explicit environment argument.
1856 (thanks to Nikodemus Siivola)
1857 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1858 confused about their position. (thanks to Adam Warner and Gerd
1860 * bug fix: Pretty printing backquoted forms with unquotations in the
1861 argument list position of various code constructs such as LAMBDA
1862 now works correctly. (reported by Paul Dietz)
1863 * bug fix: Pretty printing unquotations no longer loses all
1864 stream position information.
1865 * optimization: performance of string output streams is now less
1866 poor for multiple small sequence writes.
1867 * optimization: performance of CSUBTYPEP in the presence of complex
1868 expressions involving CONS and NOT many times has been improved.
1869 (reported by Paul Dietz)
1870 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1872 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1873 streams for the REPL, for the debugger, and so on. (thanks to
1875 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1876 * fixed some bugs revealed by Paul Dietz' test suite:
1877 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1878 is ignored if it is too small, rather than propagating through
1879 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1880 ** extremely complex negations of CONS types were not being
1881 sufficiently canonicalized, leading to inconsistencies in
1883 ** VALUES tranformer lost derived type.
1885 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1886 * fixed a bootstrapping bug: the build process no longer assumes
1887 that the various BOOLE-related constants have the same value in
1888 host and target lisps. (noted by Paul Dietz' test suite on an
1889 SBCL binary built from CLISP)
1890 * The system can now be dynamically linked on the MIPS platform,
1891 which enables dynamic loading of foreign code from Lisp. (thanks
1892 to Ralf Baechle for discussions on the MIPS ABI)
1893 * The system now records debugging information for its own source
1894 files in a filesystem-position-independent manner, relative to
1895 the "SYS" logical host.
1896 * fixed a compiler bug: MV-LET convertion did not check references
1897 to the "max args" entry point. (reported by Brian Downing)
1898 * tweaked disassembly notes to be less confident about proclaiming
1899 some instruction as an LRA. (thanks to Brian Downing)
1900 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1901 now each have their own history, command character, and other
1902 characteristics. (thanks to David Lichteblau)
1903 * fixed some bugs revealed by Paul Dietz' test suite:
1904 ** compiler failure in compiling LOGAND expressions including a
1906 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1907 shift greater than 32.
1908 ** FLUSH-DEST did not mark blocks for type check regeneration.
1909 ** HANDLER-CASE failed to accept declarations in handler clauses
1910 in some circumstances.
1912 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1913 * New code in contrib/sb-introspect (still probably not entirely
1914 stable yet) provides some support for smart Lisp development
1915 environments like SLIME.
1916 * The conditions signalled for errors occurring when loading .fasl
1917 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1918 in a way which should help ASDF recover gracefully.
1919 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1920 stuff has been cleaned up. If you code contrib/ stuff, this might
1921 affect you, and you can look at contrib/README, contrib/STANDARDS,
1922 and/or the 0.8.4.27 diff to check.
1923 * In full calls the compiler now does not generate checks for declared
1924 argument types for all arguments.
1925 * various threading fixes
1926 ** and some experimental patches which didn't make it into
1927 the main tree for this release, but which are shipped in
1928 contrib/experimental-thread.patch as a possible fix for some
1929 failures (deadlock, spinning...) in GC-intensive multithreaded
1931 * fixed PPC build problem (source code incompatibility of different
1932 library versions): added offsetof() hackery which attempts to divine
1933 where glibc maintainers put uc_mcontext today
1934 * fixed bug 282: compiler does not trust type assertions while passing
1935 arguments to a full call.
1936 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1937 &OPTIONAL VALUES type parameter.
1938 * fix bug 214: algorithm for noting rejected templates is now more
1939 similar to that of template seletion. (also reported by rydis on
1941 * fixed bug 141b: printing backquoted information readably and prettily
1942 inserts a space where necessary.
1943 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1944 (CHARACTER 10) are now reported as errors, rather than propagated
1945 as unknown types. (reported by piso on #lisp)
1946 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1947 with values NIL and :ERROR. (thanks to Milan Zamazal)
1948 * fixed bug 191c: CLOS now does proper keyword argument checking as
1949 described in CLHS 7.6.5 and 7.6.5.1.
1950 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1951 longer raise an error; further, using a list as a for-as-arithmetic
1952 counter now raises a meaningful error.
1953 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1954 now understood by sequence creation functions such as MAKE-SEQUENCE
1956 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1957 a STRING-INPUT-STREAM.
1958 * compiler enhancement: SIGNUM is now better able to derive the type
1960 * type declarations inside WITH-SLOTS are checked. (reported by
1962 * fixed some bugs revealed by Paul Dietz' test suite:
1963 ** incorrect optimization of TRUNCATE for a positive first
1964 argument and negative second.
1965 ** compiler failure in let-convertion during flushing dead code.
1966 ** compiler failure while deriving type of TRUNCATE on an
1967 interval, containing 0.
1968 ** ASH of a negative bignum by a negative bignum count now returns
1970 ** intersection of CONS types now canonicalizes properly, fixing
1971 inconsistencies in SUBTYPEP.
1973 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1974 * incompatible change: The --disable-debugger command line
1975 option now clobbers the debugger at a more fundamental
1976 level, by redefining #'INVOKE-DEBUGGER instead of by
1977 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1978 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1979 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1980 enter the debugger REPL and then suffer recursive errors
1981 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1982 while under the new system, BREAK in --disable-debugger mode
1983 terminates the system just as an unhandled error would.
1984 * fixed compiler performance when processing loops with a step >1;
1985 * bug fix: DOCUMENTATION now retrieves generic function
1986 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1987 support has been systematized, and now supports the methods
1988 specified by ANSI, along with a default method and a method for
1989 slot documentation. (reported by Nathan Froyd)
1990 * bug fix: effective methods associated with a generic function are
1991 no longer cached over a change of that generic function's method
1992 combination. (reported by Andreas Fuchs)
1993 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1994 names a non-existent directory. (thanks to Andreas Fuchs)
1995 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1996 the PPC platform, lead to stack corruption; this has been fixed.
1997 (reported by Rainer Joswig)
1998 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1999 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2000 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2001 arithmetic in general, is now much more reliable on the PPC
2003 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2004 platform now returns the right answer.
2005 * optimization: restored some effective method precomputation in
2006 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2007 precomputation is now tunable.
2008 * optimization: compiler-internal data structure use has been
2009 reviewed, and changes have been made that should improve the
2010 performance of the compiler by about 20%.
2011 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2012 simple-base-strings and simple-bit-vectors is improved.
2013 * optimization: the optimization of 32-bit logical and arithmetic
2014 functions introduced in version 0.8.3 on the x86 has been
2015 implemented on the mips, ppc and sparc platforms; an
2016 implementation of the same facility, but for 64-bit arithmetic,
2017 has been added for the alpha.
2018 * microoptimization: the compiler is better able to make use of the
2019 x86 LEA instruction for multiplication by constants.
2020 * bug fix: in some situations compiler did not report usage of
2021 generic arithmetic in (SPEED 3) policy.
2022 * bug 145b fix: compiler used wrong type specifier while converting
2023 MEMBER-types to numeric.
2024 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2026 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2027 index argument now works properly on the Alpha platform.
2028 * bug fix: floating point exception treatment on the Alpha platform
2030 * bug fix: FILE-POSITION works much better on string input and
2031 output streams. (thanks to Nikodemus Siivola)
2032 * bug fix: many threading/garbage collection symptoms sorted.
2033 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2034 might be pseudo-atomic.
2035 * internal change: Stopping for GC is now done with signals not
2036 ptrace. GC is now done in whichever thread wanted it, instead of
2038 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2040 * bug fix: result form in DO is not contained in the implicit
2042 * incompatible change: ICR structure is changed; the value part of
2043 CONTINUATION is now called LVAR; corresponding functions are
2044 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2045 * added type deriver for ISQRT (thanks to Robert E. Brown).
2046 * bug fix: better support for loading from the command line when an
2047 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2049 * fixed some bugs revealed by Paul Dietz' test suite:
2050 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2051 ** ROUND and FROUND now give the right answer when given very
2052 small float arguments.
2053 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2055 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2056 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2057 ** LCM should return a non-negative integer.
2058 ** PARSE-INTEGER returned the index of a terminator instead of the
2059 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2060 ** PARSE-INTEGER returned an incorrect index being applied to a
2062 ** LCM with two arguments of 0 returns 0 rather than signalling
2064 ** unsigned addition of a 32-bit constant with the high bit set no
2065 longer causes an internal compiler error on the x86.
2066 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2067 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2068 with negative last argument.
2069 ** byte specifiers with zero size and position no longer cause
2070 an error during type derivation.
2071 ** bignum multiplication on the Alpha platform now returns the
2073 * porting: The system now builds on SuSE AMD64, although it still
2074 generates a 32-bit binary.
2075 * .fasl file incompatibility: The fasl file version number has
2076 been incremented (because of the changes to internal compiler
2077 data structures referred to above).
2079 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2080 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2081 more accurately, on the Darwin kernel running on PowerPC hardware.
2082 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2083 * Compiler code deletion notes now signal a condition of type
2084 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2085 an associated MUFFLE-WARNING restart.
2086 * The compiler now performs limited argument count validation of
2087 constant format strings in FORMAT, and where appropriate in ERROR,
2088 CERROR and WARN. (thanks to Gerd Moellmann)
2089 * New ASDF-INSTALL contrib can be used for automatic download and
2090 installation of third-party Lisp code from CCLAN or other sites
2092 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2093 which forces another thread to execute a function supplied by the
2095 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2096 now accept and act upon their :ELEMENT-TYPE keyword argument.
2097 (reported by Martin Atzmueller, Edi Weitz)
2098 * bug fix: FILE-POSITION now accepts position designators up to
2099 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2100 is the greater. (thanks to Patrik Nordebo)
2101 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2102 Kalle Olavi Niemitalo)
2103 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2104 printable. (reported by Eric Marsden)
2105 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2106 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2107 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2108 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2109 (thanks to Stig Sandoe)
2110 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2111 UNREAD-CHAR now correctly includes the unread character in the
2112 target sequence. (thanks to Gerd Moellmann)
2113 * bug fix in threaded builds: the system can now be suspended and
2114 resumed by shell job control with minimal disruption.
2115 * bug fixes in times and timezones >2038AD
2116 * better handling of "where is GNU make?" problem in build scripts
2117 (thanks to Nikodemus Siivola)
2118 * new optimization: inside a named function any reference to a
2119 function with the same name is considered to be a self-reference;
2120 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2121 optimization quality.
2122 * new optimization on x86: logical functions and + now have
2123 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2124 used when the result is truncated to 32 bits.
2125 * VALUES declaration is partially enabled.
2126 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2127 * fixed some bugs revealed by Paul Dietz' test suite:
2128 ** The system now obeys the constraint imposed by
2129 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2130 types form a lattice under type intersection.
2131 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2132 ** ASSOC now ignores NIL elements in an alist.
2133 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2134 and (1+ MOST-POSITIVE-FIXNUM) answers.
2135 ** The addition of a method with invalid qualifiers to a generic
2136 function does not cause an error to be signalled immediately;
2137 a warning is signalled, and the error is generated only on
2138 calling the generic function.
2139 * changed .fasl file version number, in part to add type codes for
2140 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2141 obscure ANSI requirements
2143 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2144 * fixed bug 148: failure to inline-expand a local function left
2145 garbage, confusing the compiler.
2146 * fixed bugs 3cd: structure slot readers perform type check if the
2147 slot can have an invalid value (i.e. it is either not initialized
2148 or can be written with a less specific slot writer).
2149 * bug fix: the compiler now traps array references to elements off
2150 the end of an array; previously, the bounds checking in some
2151 circumstances could go off-by-one.
2152 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2154 * type declarations for array element types now obey the description
2155 on the CLHS page "Declaration TYPE", as per discussions on
2156 sbcl-help around 2003-05-08. This means that a declaration
2157 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2158 declaration, all references to BAR will be asserted or assumed
2159 (with THE, so dependent on compiler policy) to involve objects of
2160 type FOO. Note that no such declaration is implied in
2161 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2162 * declared types of functions from the "Conditions"
2163 chapter. (reported by Paul Dietz)
2164 * bug fix: CERROR accepts a function as its first argument.
2165 * bug fix: NTH an NTHCDR accept a bignum as index
2166 arguments. (reported by Adam Warner)
2167 * optimization: character compare routines now optimize comparing
2168 against a constant character. (reported by Gilbert Baumann)
2169 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2170 argument now works properly on the MIPS platform.
2171 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2172 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2173 declared to have a functional type, does not cause an error
2175 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2176 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2177 * fixed bug: if last continuation of a deleted block has a
2178 destination, this destination should be deleted too. (reported by
2180 * fixed a bug in the bootstrap process: the host compiler's values
2181 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2182 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2183 test case from Patrik Nordebo)
2184 * improved the ability of the disassembler on the PPC platform to
2185 provide helpful disassembly notes.
2186 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2187 the class in more cases than previously.
2188 * bug fix: FILE-POSITION now understands :START and :END for
2189 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2190 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2191 8) data. (thanks to David Lichteblau)
2192 * bug fix: it is possible to add a method to a generic function
2193 without lambda list.
2194 * bug fix: reader failed to signal END-OF-FILE inside an
2195 object representation. (reported by Nikodemus Siivola)
2196 * fixed some bugs revealed by Paul Dietz' test suite:
2197 ** LAST and [N]BUTLAST should accept a bignum.
2198 ** condition slot accessors are methods.
2199 ** (VECTOR NIL) is a subtype of STRING.
2201 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2202 * minor incompatible change: some nonsensical specialized lambda
2203 lists (used in DEFMETHOD) which were previously ignored now signal
2205 * minor incompatible change: the system is now aware of the types of
2206 variables in the COMMON-LISP package, and will signal errors for
2207 most violations of these type constraints (where previously they
2208 were silently accepted).
2209 * minor incompatible change: COMPILE-FILE now uses the freedom
2210 afforded (ANSI 3.2.2.3) to use derived function types for
2211 functions defined in the same file. This also permits the system
2212 to warn on static type mismatches and function
2213 redefinition. (Currently it does not work with high DEBUG level.)
2214 * minor incompatible change: VALUES declaration is disabled.
2215 * When issuing notes, the compiler now signals a condition of type
2216 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2217 restart for use in user handlers. It is expected that the
2218 COMPILER-NOTE condition will eventually become a condition
2219 supertype to a hierarchy of note types, which will then be
2220 handleable in a similar fashion. However, at the moment, no such
2221 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2222 but it's an implementation detail, not a classification for the
2224 * Changes in type checking closed the following bugs:
2225 ** type checking of unused values (192b, 194d, 203);
2226 ** template selection based on unsafe type assertions (192c, 236);
2227 ** type checking in branches (194bc).
2228 * A short form of VALUES type specifier has ANSI meaning (it has
2229 increased the number of situations when SBCL cannot perform type
2231 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2232 keywords or constants is permissible.
2233 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2234 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2235 classes. (thanks to Antonio Martinez)
2236 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2237 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2238 argument to a pretty-print stream. Instead, it leaves any such
2239 operations to DESCRIBE-OBJECT methods.
2240 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2242 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2243 lambda lists. (thanks to David Lichteblau)
2244 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2245 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2246 (thanks to Gerd Moellmann)
2247 * fixed bug 246: increased compilation speed of long
2248 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2250 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2252 * DEFCONSTANT now throws a condition of type
2253 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2254 constant to a non-EQL value; CONTINUE and ABORT restarts
2255 respectively change and preserve the value.
2256 * fixed bug 63: The code walker, part of the implementation of CLOS,
2257 is now better at handling symbol macros.
2258 * bug fix: There is no longer an internal implementation type named
2259 CL:LENGTH. (reported by Raymond Toy)
2260 * bug fix: In macro-like defining macros/special operators the
2261 implicit block does not enclose the lambda list.
2262 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2263 enclosed in parentheses) are not suitable as type specifiers, and
2264 their use properly signals an error now.
2265 * bug fix: An argument count mismatch for a type specifier in code
2266 being compiled no longer causes an unhandled error at compile
2267 time, but signals a compile-time warning.
2268 * fixed simple vector readable printing
2269 * bug fix: DESCRIBE takes more care over whether the class
2270 precedence list slot of a class is bound before accessing it.
2271 (reported by Markus Krummenacker)
2272 * bug fix: FORMATTER can successfully compile pretty-printer format
2273 strings which use variants of the ~* directive inside.
2274 * bug fix: SEARCH now applies its TEST predicate to the elements of
2275 the arguments in the correct order. (thanks to Wolfhard Buss)
2276 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2277 in type inference. (thanks to Robert E. Brown)
2278 * bug fix: Reading in symbols with an explicit package name of ""
2279 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2280 * fixed some bugs revealed by Paul Dietz' test suite:
2281 ** NIL is now allowed as a structure slot name.
2282 ** Arbitrary numbers, not just REALs, are allowed in certain
2283 circumstances in LOOP for-as-arithmetic clauses.
2284 ** Multiple class redefinitions before slot access no longer
2285 causes a type error.
2286 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2287 association between the name and a class.
2288 ** Generic functions with non-standard method-combination and over
2289 five methods all of which return constants no longer return NIL
2290 after the first few invocations. (thanks to Gerd Moellmann)
2291 ** CALL-NEXT-METHOD with no arguments now passes the original
2292 values of the arguments, even in the presence of assignment.
2293 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2295 ** DISASSEMBLE works with closures and funcallable instances.
2296 ** ADD-METHOD now returns the generic function, not the new method.
2297 ** FIND-METHOD signals an error if the lengths of the specializers
2298 is incompatible with the generic function, even if the ERRORP
2300 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2301 which its argument is a member.
2302 ** DEFCLASS only redefines the class named by its class-name
2303 argument if that name is the proper name of the class;
2304 otherwise, it creates a new class.
2305 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2306 of the UNBOUND-SLOT condition to the name of the slot.
2307 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2308 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2309 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2310 SLOT-MAKUNBOUND in the specified fashion.
2312 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2313 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2314 cross-compilation host. As a consequence, we can now bootstrap our
2315 way up to SBCL starting with a bare gcc toolchain and human-readable
2316 source code (first the source to CLISP, then the source to SBCL).
2317 * A contributed module containing a partial implementation of the
2318 simple-streams interface has been included. (thanks to Rudi
2320 * A contributed module implementing the RFC1321 Message Digest
2321 Algorithm, known as MD5, has been included.
2322 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2323 no longer has any effect, as the code controlled by this feature
2324 has been deleted. (As far as we know, no-one has ever built using
2325 this feature, and its semantics were confused in any case).
2326 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2327 work on conditions (as required by the ANSI specification),
2328 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2329 expected behaviour on conditions. Users should note, however,
2330 that such behaviour is not required by the ANSI specification,
2331 and so use of this behaviour may render their code unportable.
2332 * fixed some bugs revealed by Paul Dietz' test suite:
2333 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2335 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2336 ** SXHASH on condition objects no longer returns NIL.
2337 ** :ALLOCATION :CLASS slots are better treated; their values are
2338 updated on class redefinition, and initforms inherited from
2339 superclasses are applied.
2340 ** REMOVE-METHOD returns its generic function argument even when
2341 no method was removed.
2342 ** SHARED-INITIALIZE now initializes the values of the requested
2343 slots, including those with :ALLOCATION :CLASS.
2344 ** ALLOCATE-INSTANCE now works on structure classes defined via
2345 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2347 ** SLOT-EXISTS-P now works on conditions, as well as structures
2349 ** MAKE-LOAD-FORM now has the required methods on
2350 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2351 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2352 keyword, and now implements the SLOT-NAMES argument.
2353 ** methods with &OPTIONAL arguments no longer allow too many
2354 arguments to be passed in the call without error.
2355 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2356 option is consistent with the required arguments of the generic
2357 function lambda list.
2358 * bug fix: REQUIRE accepts a string designator. (Thanks to
2360 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2361 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2362 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2363 * bug fix: The compiler now checks for duplicated variables in macro
2365 * bug fix: SETQ on globals returns the correct value.
2366 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2367 not a COMPILER-ERROR (followed by some other strange error on
2368 choosing the CONTINUE restart).
2369 * bug fix: make.sh and friends are now more consistent in the way that
2370 they look for GNU "make".
2372 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2373 * experimental native threads support (on x86 Linux >=2.4 only).
2374 This is not compiled in by default: you need to add :SB-THREAD to
2375 the target features. See the "Beyond ANSI" chapter of the manual
2377 * fix for longstanding nonANSIism: The old distinction between
2378 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2379 The return value from CL:FIND-CLASS is now a CLOS class, and
2380 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2381 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2382 * An interface to the MetaObject Protocol, as described in Kiczales,
2383 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2384 MIT Press, 1991, is available from the SB-MOP package.
2385 * incompatible change: the SB-PCL package should now be considered
2386 a private implementation detail, and no longer a semi-private MOP
2388 * minor incompatible change: due to rearrangement for threads, the
2389 control stack and binding stack are now allocated at arbitrary
2390 addresses instead of being hardcoded per-port. Users affected by
2391 this probably have to be doing advanced things with shared
2392 libraries, and will know who they are.
2393 * minor incompatible change: Previously, all --eval forms used were
2394 processed with READ before any of them were processed with EVAL.
2395 Now each --eval form is processed with both READ and EVAL before
2396 the next --eval form is processed. (Thus package operations like
2397 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2398 work as the user might reasonably expect.)
2399 * minor incompatible change: *STANDARD-INPUT* is now only an
2400 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2402 * minor incompatible change: Y-OR-N-P is now character-oriented,
2403 not line oriented. Also, YES-OR-NO-P now works without errors.
2404 (thanks to Antonio Martinez)
2405 * sb-aclrepl module improvements: an integrated inspector, added
2406 repl features, and a bug fix to :trace command.
2407 * Known functions, which cannot be open coded by the backend, are
2408 considered to be able to check types of their arguments. (fixing
2409 a bug report by Nathan J. Froyd)
2410 * fixed a bug in computing method discriminating functions: It is
2411 now possible to define methods specialized on classes which have
2412 forward-referenced superclasses. (thanks to Gerd Moellmann)
2413 * fixed evaluation order in optional entries (reported by Gilbert
2415 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2416 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2417 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2418 required-by-AMOP NAME argument, as well as CLASS and
2419 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2420 * fixed bug 20: DEFMETHOD can define methods using names that are
2421 not the proper names of classes to designate class specializers.
2422 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2423 Unix file descriptors, instead of blowing up. (thanks to Antonio
2425 * Garbage collection refactoring: user-visible change is that a
2426 call to the GC function during WITHOUT-GCING will not do garbage
2427 collection until the end of the WITHOUT-GCING. If you were doing
2428 this you were probably losing anyway.
2429 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2430 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2431 TYPEP the latter but not the former.
2432 * The compiler issues a full WARNING for calls to undefined functions
2433 with names from the CL package.
2434 * MAP-INTO for a vector destination is open coded. (reported by
2435 Brian Downing on c.l.l)
2436 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2437 documentation string.
2438 * fixed some bugs revealed by Paul Dietz' test suite:
2439 ** COPY-ALIST now signals an error if its argument is a dotted
2441 ** Condition slots are now accessed more correctly in the presence
2442 of multiple initargs for a given slot.
2443 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2444 exclude restarts of the same name associated with a different
2446 ** DEFCLASS of forward-referenced classes with another
2447 forward-referenced class in the superclasses list no longer
2449 ** Condition slots are now initialized once each, not multiple
2450 times. (thanks to Gerd Moellmann)
2451 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2453 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2454 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2455 arguments contain duplicated elements.
2456 ** RESTART-CASE understands local macros.
2457 ** RESTART-CASE associates exactly its own restarts with a condition.
2458 ** ENDP in safe mode checks its argument to be of type LIST.
2459 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2460 in question is unbound.
2461 ** Optimized MAKE-INSTANCE functions no longer cause internal
2462 assertion failures in the presence of duplicate initargs.
2463 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2464 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2465 propagated even in the ctor optimized implementation of
2467 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2469 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2470 * a better implementation of SXHASH on (simple) bit vectors,
2471 measured both in execution speed and in distribution of results
2472 over the positive fixnums, has been installed. Likewise, a better
2473 implementation of EQUAL for simple bit vectors is now available.
2474 * fixed CEILING optimization for a divisor of form 2^k.
2475 * fixed bug 240 (emitting extra style warnings "using the lexical
2476 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2477 by Antonio Martinez)
2478 * fixed SXHASH, giving different results for NIL depending on type
2479 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2480 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2481 variable. (found by Rolf Wester)
2482 * SBCL does not ignore type declarations for special
2483 variables. (reported by rif on c.l.l 2003-03-05)
2484 * some bug fixes in contrib/sb-aclrepl/
2485 * fixed some bugs revealed by Paul Dietz' test suite:
2486 ** a bug in the CONS type specifier, whereby the CAR and CDR
2487 types got intertwined, has been fixed;
2488 ** the type system is now able to reason about the interaction
2489 between INTEGER and RATIO types more completely;
2490 ** APPEND, [N]REVERSE and NRECONC check that those their
2491 arguments, which must be proper lists, are really so;
2492 ** An array specialized to be unable to hold elements has been
2493 implemented, as required -- yes, really -- by ANSI;
2494 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2495 on malformed property lists;
2497 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2498 * incompatible packaging change: in line with Unix convention,
2499 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2500 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2501 * REQUIRE and PROVIDE are now optionally capable of doing something
2502 useful. See the documentation string for REQUIRE.
2503 * infrastructure for a managed SBCL contrib system: contributed
2504 modules in this release include:
2505 ** the ASDF system definition facility;
2506 ** an interface to the BSD Sockets API;
2507 ** an ACL-like convenience interface to the repl;
2508 (thanks to Kevin Rosenberg)
2509 ** an implementation of ROTATE-BYTE, with efficient implementation
2511 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2512 gives a closer approximation to the right answer than previously.
2513 (thanks to Raymond Toy)
2514 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2515 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2516 optional environment arguments, as required by ANSI.
2517 * fixed bugs in other functions taking environment objects, allowing
2518 calls with an explicit NIL environment argument to be compiled
2520 * fixed bug 228: primary return values from
2521 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2522 COMPILE or FUNCTION.
2523 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2524 :TYPE will no longer signal errors on innocuous objects.
2525 * fixed bug 231b: SETQ is better at respecting type declarations in
2526 the lexical environment.
2527 * fixed a bug in DEFCLASS: classes named by symbols with no or
2528 unprintable packages can now be defined.
2529 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2530 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2531 * fixed compiler failure related to checking types of functions.
2532 (reported by Robert E. Brown)
2533 * the compiler is now much more consistent in its error-checking
2534 treatment of bounding index arguments to sequence functions: in
2535 (SAFETY 3) code, errors will be signalled in almost all cases if
2536 invalid sequence bounding indices are passed to functions defined
2537 by ANSI to operate on sequences.
2538 * fixed a bug in the build procedure: documentation of SBCL-specific
2539 packages is now preserved and available in the final Lisp image.
2540 * lifted FDEFINITION lookup out of loops in the implementation of
2541 many list operations. (thanks to Robert E. Brown)
2542 * fixed a bug in the reader: the #n# reader macro now works for
2543 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2544 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2545 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2546 E. Brown and Tony Martinez respectively)
2547 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2548 SLOT-BOUNDP: in particular, it is now able to optimize them much
2549 better, and is now not vulnerable to having packages renamed.
2550 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2551 always called when a slot is not present in an instance. (thanks
2553 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2554 longer signal an error on unreading a character following EOF on
2555 the previous constituent stream. (thanks to Tony Martinez)
2556 * fixed some bugs revealed by Paul Dietz' test suite:
2557 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2558 not just nonnegative fixnums;
2559 ** the logical bit-array operators such as BIT-AND now accept an
2560 explicit NIL for their "opt-arg" argument (to indicate a
2561 freshly-consed result bit-array);
2562 ** ELT now signals an error on an invalid sequence index in safe
2564 ** the type system is now cleverer about negations of numeric
2565 types, and consequently understands the BIGNUM and RATIO types
2567 ** the type system is now cleverer about the interaction between
2568 INTEGER and RATIO types: while bugs still remain, many more
2569 cases are accurately computed;
2570 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2571 if it is in the last clause;
2572 ** CONSTANTLY now correctly returns a side-effect-free function in
2574 ** DECLARE is no longer treated as a special-operator; in
2575 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2576 * incremented fasl file version number due to the change in the
2577 DEFSTRUCT-SLOT-DESCRIPTION structure.
2579 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2580 * minor incompatible change: code processed by the "interpreter" or
2581 EVAL now has a compilation optimization policy of (DEBUG 2)
2582 (changed from (DEBUG 1)) to improve debuggability of interactive
2583 development, and to allow the use of the debug RETURN command in
2585 * an experimental implementation of the RETURN command for the
2586 debugger has been included. (thanks to Frederik Kuivinen)
2587 * fixed bug 62: constraints were not propagated into a loop.
2588 * fixed bug in embedded calls of SORT (reported and investigated by
2590 * fixed some bugs revealed by Paul Dietz' test suite:
2591 ** printing and reading of arrays with some dimensions having
2592 length 0 (thanks to Gerd Moellmann);
2593 ** BOA constructor with &AUX argument without a default value does
2594 not cause a type error;
2595 ** CONSTANTP now returns true for all self-evaluating objects.
2597 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2598 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2599 accessors that are related by inheritance, as specified in the
2600 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2601 Valtteri Vuorikoski)
2602 * The compiler is now able to inline functions that were defined in
2603 a complex lexical environment (e.g. inside a MACROLET).
2604 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2606 * Support for the upcoming FreeBSD-5.0 release has been included.
2607 (thanks to Dag-Erling Smorgrav)
2608 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2609 effect when it is not in a toplevel context.
2610 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2611 stand a better chance of being correct. (thanks to Gerd
2613 * fixed bug in COERCE, which now signals an error on coercing a
2614 rational to a bounded real type which excludes the expected
2616 * The compiler is now able to derive types more accurately from the
2617 COERCE and COMPILE functions.
2618 * fixed bug 223: functional binding is considered to be constant
2619 only for symbols in the CL package.
2620 * fixed bug 231: SETQ did not check the type of a variable being set
2621 (reported by Robert E. Brown)
2622 * A new optimization for MAKE-INSTANCE has been included, fixing
2623 various bugs (including relating to :ALLOCATION :CLASS slots and
2624 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2626 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2627 ** As required by ANSI, LOOP now disallows anonymous collection
2628 clauses such as COLLECT I in conjunction with aggregate boolean
2629 clauses such as THEREIS (= I 1);
2630 ** LOOP now signals an error when any variable is reused in the
2631 same loop (including the potentially useful construct analogous
2632 to WITH A = 1 WITH A = (1+ A);
2633 ** IT is only a special loop symbol within the first clause of a
2634 conditional loop clause;
2635 ** LOOP with a typed iteration variable over a hashtable now
2636 signals a type error iff it should.
2637 * fixed some other bugs revealed by Paul Dietz' test suite:
2638 ** FILE-STREAM now names the class previously known as FD-STREAM;
2639 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2640 argument) no longer signals an error;
2641 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2642 of the slot symbol, rather than using the current package
2643 ((:CONC-NAME "") continues to intern the slot's name in the
2645 * incremented fasl file version number, because of the incompatible
2646 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2647 of the new implementation of DEFINE-COMPILER-MACRO.
2649 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2650 * Support for building SBCL for MIPS platforms running in
2651 little-endian mode has now been checked in, and basic
2652 functionality on said platforms verified.
2653 * minor incompatible change: PCL now records the pathname of a file
2654 in which methods and the like are defined, rather than its
2656 * minor incompatible change: TRUENAME now considers the truename of
2657 a file naming a directory to be the pathname with :DIRECTORY
2658 component indicating that directory.
2659 * minor incompatible change: a NAMED clause in the extended form of
2660 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2661 reason for the previous behaviour is unclear.
2662 * more systematization and improvement of CLOS and MOP conformance
2663 in PCL (thanks to Gerd Moellman and Pierre Mai):
2664 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2666 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2667 primary methods with no specializers;
2668 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2670 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2671 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2672 FORWARD-REFERENCED-CLASSes; error reporting on
2673 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2675 ** SXHASH on CLOS instances now uses a slot internal to the
2676 instance to return different numbers on distinct instances,
2677 while preserving the same return value through invocations of
2679 ** DEFMETHOD signals errors when methods with longer incongruent
2680 lambda lists are added to generic functions;
2681 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2682 CLASS, as specified in AMOP;
2683 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2684 on the order returned by the primary method for classes of
2685 class STANDARD-CLASS;
2686 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2687 * fixed some bugs shown by Paul Dietz' test suite:
2688 ** DOLIST puts its body in TAGBODY;
2689 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2691 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2692 value producing form;
2693 ** if more variables are given to PROGV than values, extra
2694 variables are bound and made to have no value;
2695 ** NSUBSTITUTE on list arguments gets the right answer with
2697 ** ELT signals an error of type TYPE-ERROR when the index argument
2698 is not a valid sequence index;
2699 ** LOOP signals (at macroexpansion time) an error of type
2700 PROGRAM-ERROR when duplicate variable names are found;
2701 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2702 ** FUNCALL of special-operators now cause an error of type
2704 ** PSETQ now works as required in the presence of side-effecting
2705 symbol-macro places;
2706 ** NCONC accepts any object as its last argument;
2707 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2709 ** loop-for-as-package does not require a package to be explicitely
2711 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2713 * fixed bug 166: compiler preserves "there is a way to go"
2714 invariant when deleting code.
2715 * fixed bug 172: macro lambda lists with required arguments after
2716 &REST arguments now cause an error to be signalled. (thanks to
2718 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2719 bug. (thanks to Matthew Danish)
2720 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2722 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2723 arguments are lexically rebound. (thanks to Gerd Moellmann and
2725 * fixed bug 194: error messages are now more informative when there
2726 is no primary method applicable in a call to a generic
2727 function. (thanks to Gerd Moellmann)
2728 * fixed bug in command line argument checking (thanks to Julian
2730 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2731 (thanks to Matthew Danish)
2732 * incremented fasl file version number, because of the
2733 SXHASH-related changes in the layout of CLOS data structures
2735 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2736 * minor incompatible change: The runtime (the Unix executable named
2737 "sbcl") is now much pickier about the .core files it will load.
2738 Essentially it now requires .core files to descend from the same
2739 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2740 as the runtime does. (The intent is to prevent the crashes which
2741 can occur, and which can even be reported as mysterious failures,
2742 when people patch the sources or change the build parameters
2743 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2744 sbcl and .core files.)
2745 * fixed bug: VALUES-LIST is no longer optimized away.
2746 * fixed bug 142: The FFI conversion of C string values to Lisp
2747 string values no longer conses excessively. (thanks to Nathan
2748 Froyd porting Raymond Toy's fix to CMU CL)
2749 * began to systematize and improve MOP conformance in PCL (thanks to
2750 Nathan Froyd, Gerd Moellman and Pierre Mai):
2751 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2753 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2754 ** FINALIZE-INHERITANCE is now called on class finalization;
2755 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2756 argument precedence order.
2757 * fixed bug 202: The compiler no longer fails on functions whose
2758 derived types contradict their declared type.
2759 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2760 so it can be non-toplevel.
2761 * The fasl file version number has changed (because of the new
2762 implementation of DEFMACRO).
2763 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2764 safe code, that any length requirement by their type-specifier
2765 argument is valid. The exceptions to this are described in bug
2767 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2768 functions now check the types of their inputs as required by ANSI.
2769 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2770 introduced symbol is DECLAREd to be SPECIAL.
2771 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2772 * fixed bug: :COUNT argument to sequence functions may be negative
2773 * fixed bug: body of DO-SYMBOLS may contain declarations
2774 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2775 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2776 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2777 symbol macro only once
2778 * fixed printing of call frame when argument list is unavailable
2779 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2780 * compiler no longer signals WARNING on unknown keyword
2783 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2784 * A beta-quality port to the mips architecture running Linux,
2785 based on the old CMUCL backend, has been made. It has been tested
2786 on a big-endian kernel, and works sufficiently well to be able to
2787 rebuild itself; it has not been tested in little-endian mode.
2788 * fixed an inconsistency between gencgc.c and purify.c which made
2789 dumping/loading .core files unreliable
2790 * fixed bug 120a: The compiler now deals correctly with IFs where
2791 the consequent is the same as the alternative, instead of
2792 misderiving the return type. (thanks to Alexey Dejneka)
2793 * fixed bug 113: Logical pathnames are now dumpable (the logical
2794 host is resolved at load-time, throwing an error if it is not
2796 * fixed bug 174: FORMAT's error message is slightly clearer when a
2797 non-printing character is used in a format directive.
2798 * fixed several bugs in compiler checking of type declarations, i.e.
2799 violations of the Python "declarations are assertions" principle
2800 (thanks to Alexey Dejneka)
2801 * fixed several bugs in PCL's error checking (thanks to Gerd
2803 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2805 * fixed bug in compilation of functions as first class values
2806 (thanks to Antonio Martinez-Shotton)
2807 * The compiler's handling TYPE-ERRORs which it can prove will
2808 inevitably happen at runtime has been cleaned up and corrected
2809 in several ways. (thanks to Alexey Dejneka)
2810 * improved argument type checking for various basic arithmetic
2811 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2812 lavished on them in the past that they can be compiled in many
2813 ways in different special cases
2814 * fixed bug 181: compiler checks validity of user supplied type
2816 * cleaned up code flushing in optimization: Function calls which
2817 should signal errors for safety purposes (e.g. which ANSI says
2818 should signal errors when their arguments are of incorrect type)
2819 are no longer optimized away.
2820 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2821 * incremented fasl file version number, because changes in the
2822 implementation of sequence functions like COERCE caused
2823 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2824 in old inline expansions) to become undefined. (Actually these
2825 changes were later undone, so we might very well be binary
2826 compatible with 0.7.7 after all, but leaving the version number
2827 incremented seemed like the simplest and most conservative
2830 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2831 * An alpha-quality port to the parisc architecture running Linux,
2832 based on the old CMUCL backend, has been made. This, even more so
2833 than the other backends, should be considered still a work in
2834 progress; known problems include that the Linux kernel in 64-bit
2835 mode does not propagate the correct sigcontext structure to
2836 userspace, and consequently SBCL on a parisc64 kernel will not
2838 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2839 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2840 suppressed.) Also now that the compiler is looking at declarations
2841 in the environment, it checks optimization declarations as well,
2842 and suppresses inlining when (> DEBUG SPEED).
2843 * More fixes have been made to treatment of floating point exception
2844 treatment and other Unix signals. In particular, floating point
2845 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2846 * The detection and handling of control stack exhaustion (infinite
2847 or very deeply nested recursion) has changed. Stack exhaustion
2848 detection is now done by write-protecting pages at the OS level
2849 and applies at all optimization settings; when found, a
2850 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2851 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2852 be caught using IGNORE-ERRORS.
2853 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2854 correctly when transforming recursive LABELS functions to LETs.
2855 (thanks to Alexey Dejneka)
2856 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2857 that are names of constants or global variables.
2858 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2859 alien routines with docstrings.
2860 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2861 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2863 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2864 (thanks to Eric Marsden)
2865 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2866 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2867 * Bug fix: The SPARC backend can now compile functions involving
2868 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2869 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2870 to a functions expecting a PATHNAME-DESIGNATOR.
2871 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2872 lambda lists. (thanks to Alexey Dejneka)
2873 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2874 functions so that EXPORTing the name of the class doesn't cause
2875 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2876 to Antonio Martinez for reporting this)
2877 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2878 constant-folded without failing an assertion. (thanks to Einar
2879 Floystad Dorum for reporting this)
2880 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2881 types are now dealt with more correctly by the compiler.
2882 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2883 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2884 behaviour analogous to RENAME-FILE. This puts its behaviour more
2885 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2887 * The fasl file version number has changed again. (because of the
2888 bug fix involving the names of PCL MAKE-INSTANCE functions)
2890 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2891 * bug fix: Floating point exceptions are treated much more
2892 consistently on the x86/Linux and PPC/Linux platforms.
2893 * Array initialization with :INITIAL-ELEMENT is now much faster for
2894 cases when the compiler cannot open code the array creation, but
2895 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2896 array accesses have also seen a speed increase.
2897 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2898 specified. (This was at the root of some bad interactions between
2899 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2901 * bug fix: Internal error arguments for undefined functions are now
2902 computed correctly on the PPC/Linux platform.
2903 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2904 Raymond Toy's patch for CMU CL)
2905 * Support for the Solaris 9 operating environment has been included
2906 (thanks to Daniel Merritt)
2907 * A very ugly but hopefully complete draft of the missing FFI chapter
2908 of the manual has been created by reformatting the corresponding
2909 CMU CL manual chapter into (currently very ugly and incoherent)
2910 DocBook and bringing it up to date for SBCL behavior. Thus, the
2911 manual is now essentially complete, at least by my extreme
2912 once-and-only-once standards, whereby it's acceptable to refer to
2913 the doc strings of SB-EXT functions as the primary documentation.
2914 * The fasl file version number has changed again, due to cleanup of
2915 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2916 is no longer a static symbol.)
2918 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2919 * SBCL now builds with OpenMCL (version 0.12) as the
2920 cross-compilation host; also, more progress has been made toward
2921 bootstrapping under CLISP.
2922 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2924 * bug 158 fixed: The compiler can now deal with integer loop
2925 increments different from 1; fixing this turned out also to fix
2927 * bug 169 fixed: no more bogus warnings about using lexical bindings
2928 despite the presence of perfectly good SPECIAL declarations (thanks
2929 to David Lichteblau)
2930 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2931 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2932 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2934 * bug 180 fixed: Method combination specifications no longer ignore
2935 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2936 * bug fix: Structure type predicate functions now check their argument
2937 count as they should.
2938 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2939 correctly. (thanks to Pierre Mai)
2940 * minor incompatible change: The --noprogrammer option is deprecated
2941 in favor of the new --disable-debugger option, which is very similar.
2942 (The major difference is that it takes effect at a slightly different
2943 time at startup, causing handling of errors in --sysinit and
2944 --userinit files will be affected differently.) The
2945 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2946 been added to allow this functionality to be controlled from ordinary
2947 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2948 maintainers, who might want to run non-interactive scripts to
2949 build SBCL cores which will later be used interactively.)
2950 * minor incompatible change: The LOAD function no longer, when given
2951 a wild pathname to load, loads all files matching that pathname.
2952 Instead, an error of type FILE-ERROR is signalled.
2954 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2955 * bug 147 fixed: The compiler preserves its block link/count
2956 invariants more correctly now so that it doesn't crash. (thanks
2958 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2960 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2961 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2962 no-value-for-this-character as NIL (as specified by ANSI).
2963 * HOST-NAMESTRING on physical pathnames now returns a string that is
2964 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2965 (thanks to Christophe Rhodes)
2966 * The Alpha port handles icache flushing more correctly. (thanks to
2968 * More progress has been made toward bootstrapping under CLISP. (thanks
2969 to Christophe Rhodes)
2970 * The fasl file format has changed again, because dynamic loading
2971 on OpenBSD (which has non-ELF object files) motivated some cleanups
2972 in the way that foreign symbols are transformed and passed around.
2973 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2974 is no longer treated as whitespace by the reader, but instead as
2975 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2976 |A
\7fB|, instead of A as it used to.
2978 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2979 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2980 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2981 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2982 this as of 0.7.1.45, but was left out of the previous news section
2983 (thanks to Dan Barlow)
2984 * SBCL now runs on the Solaris operating system on SPARC architectures
2985 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2986 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2987 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2988 * SPARC backend cleanups, allowing builds of cores optimized for V8
2989 and V9 SPARCS, and also emission of code targeted to a particular
2990 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2992 * SBCL is closer to bootstrapping under CLISP, thanks to various
2993 fixes by Christophe Rhodes.
2994 * The fasl file format has changed again, to allow the compiler's
2995 INFO database to support symbol macros.
2996 * The user manual (in doc/) is formatted into HTML more nicely.
2997 (thanks to coreythomas)
2998 * The system is smarter about SUBTYPEP relationships, especially
2999 those involving NOT types (including types such as ATOM which are
3000 represented internally using NOT types). Thus SUBTYPEP is less
3001 likely to return (VALUES NIL NIL) in general, and in particular
3002 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3004 * The fasl file format has changed again, because the internal
3005 representation of types now includes a new slot to support the new
3006 SUBTYPEP-of-NOT-types logic.
3007 * (not a change in the main branch of SBCL, but a related prototype
3008 which can hopefully be merged into the main branch of SBCL in the
3009 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3010 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3011 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3012 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3013 dispatch macro character combinations. (thanks to Alexey Dejneka)
3014 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3015 that superficially look like logical namestrings correctly.
3016 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3018 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3019 default supplied-p) for &optional and &key arguments. (thanks to
3022 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3023 * incompatible change: The compiler is now less aggressive about
3024 tail call optimization, doing it only when (> SPACE DEBUG) or
3025 (> SPEED DEBUG). (This is an incompatible change because there are
3026 programs which relied on the old CMU-CL-style behavior to optimize
3027 away their unbounded recursion which will now die of stack overflow.)
3028 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3029 for non-GENCGC systems has been increased to 20M (since that
3030 seems much closer to the likely performance optimum for modern
3031 systems than the old 4M value was)
3032 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3033 and *DEBUG-PRINT-LEVEL*
3034 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3035 of CMU CL's support for SPARC, and various endianness and other
3036 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3037 * new syntactic sugar for the Unix command line: --load foo.bar is now
3038 an alternate notation for --eval '(load "foo.bar")'.
3040 ** The system now detects stack overflow and handles it gracefully,
3041 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3042 optimization settings. (This is a good thing in general, and
3043 its introduction in this version should be particularly timely
3044 for anyone whose code fails because of suppression of tail
3046 ** The system now hunts for the C variable "environ" in a more
3047 devious way, to avoid segfaults when the C library version differs
3048 between compile time and run time. (thanks to Christophe Rhodes)
3049 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3050 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3051 ** The compiler no longer issues bogus style warnings for undefined
3052 classes in the same source file as the DEFCLASSes which defined
3053 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3055 ** fixes in CONDITION class precedence list for undefined function
3056 errors (thanks to Alexei Dejneka)
3057 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3058 correctly. (thanks to Dan Barlow)
3059 ** portability fixes aiming at bootstrapping under CLISP (thanks
3060 to Dave McDonald and Christophe Rhodes)
3061 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3062 ** fixes in type translation and and type inference (thanks to
3064 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3065 ** various fixes in the new ports (thanks to Dan Barlow)
3066 * several changes related to debugging:
3067 ** suppression of tail recursion, as noted above
3068 ** stack overflow detection, as noted above
3069 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3070 is now the default. (For some time encapsulation has been more
3071 reliable than the breakpoint-based :ENCAPSULATE NIL
3072 implementation, at least on X86 systems; and I just noticed that
3073 encapsulation also seems closer to the spirit of the ANSI
3076 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3078 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3079 up properly again. (There was a packaging bug in 0.7.0 which
3080 left their definitions in SB-SYS::LOAD-FOREIGN and
3081 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3082 vital for most things which interface to C-level interfaces,
3083 like extensions working with sockets or databases or
3084 Perl-compatible regexes or whatever, and the need to fix
3085 this bug is the main reason that 0.7.1 was released so
3087 ** DEFGENERIC is now choosier about the methods it redefines, so that
3088 reLOADing a previously-LOADed file containing DEFGENERICs does
3089 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3090 cycle now works as it should. (thanks to Alexey Dejneka)
3091 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3092 fixed by Christophe Rhodes. (He actually submitted this patch
3093 months ago, and I delayed until after 0.7.0.)
3094 ** Bug 111 (internal compiler confusion about runtime checks on
3095 FUNCTION types) was fixed by Alexey Dejneka.
3096 * Some internal cleanups (getting rid of variables which aren't
3097 needed now that the byte interpreter is gone) caused the fasl
3098 file format number to change again.
3100 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3101 * major incompatible change: The default fasl file extension, i.e. the
3102 default extension for files produced by COMPILE-FILE, has changed
3103 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3105 ** There are many changes in the implementation of the compiler.
3106 SBCL is now essentially a compiler-only implementation of ANSI
3107 Common Lisp. EVAL still "interprets" a few special cases, but
3108 almost all the interesting cases are handled by creating
3109 a LAMBDA expression, calling COMPILE on it, then calling
3110 FUNCALL on the result.
3111 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3112 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3113 Since the code is newer, there might still be some new bugs
3114 (though not as many as before Martin Atzmueller's fixes:-). But
3115 the new code is substantially simpler and clearer, and hopefully
3116 any remaining bugs will be simpler, less fundamental, and more
3117 fixable then the bugs in the old code.
3118 ** The revised compiler is still a little unsteady on its feet.
3120 *** The debugging information it produces (particularly the names
3121 of FUNCTION objects) is sometimes much less useful than what
3122 the old compiler produced.
3123 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3124 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3125 within a MACROLET) has been temporarily weakened.
3126 ** There are new compiler optimizations for various functions:
3127 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3128 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3129 *** the math functions TRUNCATE, FLOOR, and CEILING
3130 *** the function-of-all-trades COERCE
3131 Mostly these should be transparent, but there's one
3132 potentially-annoying problem (bug 117): when the compiler
3133 inline-expands a function and does type analysis on the result,
3134 it can create control paths which have type mismatches, and
3135 when it can't prove that those control paths aren't taken,
3136 it will issue WARNINGs about the type mismatches. This is
3137 a particular problem in practice for the new sequence functions.
3138 It's not clear how this should be fixed, and for now, a
3139 workaround is given in the entry for 117 in the BUGS file.
3140 ** (Because of the interaction between the two previous items --
3141 occasional inlining problems and new inline expansions -- some
3142 of the new sequence function optimizations won't really kick in
3143 completely until debugging information, and then inlining, are
3144 straightened out in some future version.)
3145 * minor incompatible changes:
3146 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3147 DIRECTORY no longer implicitly promotes NIL slots of its
3148 pathname argument to :WILD. In particular, when you ask for the
3149 contents of a directory (which you used to be able to do without
3150 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3151 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3152 ** changes in behavior that ANSI explicitly defines to be
3153 implementation dependent:
3154 *** The new compiler-only implementation still conforms with ANSI,
3155 but acts a little different than before. Besides the obvious
3156 changes in performance tradeoffs (that the cost per form passed
3157 to EVAL has gone up, and the cost per form executed by EVAL
3158 has gone down), the behavior of the system changes a little
3159 because there are no longer any interpreted function objects.
3160 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3161 e.g. doing COMPILE on the output of interactive DEFUN is
3163 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3165 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3166 has changed from (:CL) to NIL.
3167 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3168 e.g. #\Newline and #\Tab, don't have names specified in the
3169 ANSI Common Lisp standard, is now based on their ASCII symbolic
3170 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3171 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3172 are no longer used for output.
3173 ** changes in internal implementation constants:
3174 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3175 4 million. (If your application spends a lot of time GCing and
3176 you have a lot of RAM, you might want to experiment with
3177 increasing it even more.)
3178 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3179 However, almost all old code should still continue to work without
3180 immediate update, as SB-C-CALL is now a (deprecated) nickname
3182 ** Old operator names in the style DEF-FOO are now deprecated in
3183 favor of new corresponding names DEFINE-FOO, for consistency with
3184 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3185 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3186 internal symbols, but a few supported extensions like
3187 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3188 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3189 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3190 etc. as you get deeper into recursive calls to the debugger
3191 command loop, instead of the old "5]", "5]]", "5]]]"
3192 sequence. (I was motivated to do this when squabbles between
3193 ILISP and SBCL left me very deeply nested in the debugger. In the
3194 short term, this change will probably provoke more ILISP/SBCL
3195 squabbles, but hopefully it will be an improvement in the long run.)
3196 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3197 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3198 function, since declaiming return types involving aliens is
3199 (1) annoyingly messy to do by hand and (2) vital to efficient
3200 compilation of code which calls such functions.
3201 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3202 longer reexported by the SB-EXT package. They're solely useful
3203 for alien code, so it seems more logical that you should get
3204 them from the SB-ALIEN package, not in SB-EXT.
3205 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3206 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3207 features. Instead, the code that they used to control is always
3208 built into the system.
3209 * many other bug fixes
3210 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3211 advantage of the new EVAL-WHEN stuff and to clean them up in
3212 general, and they are now more ANSI-compliant in a number of
3213 ways. Martin Atzmueller is responsible for a lot of this.
3214 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3216 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3217 *** correct ERROR type for various file operations
3218 *** some fixes for Lisp streams
3219 *** DEFMETHOD syntax checking
3220 *** changing old weird representation of debug information as
3221 strings (which, among their other deficiencies, don't transform
3222 correctly when you rename packages, and don't change their
3223 print representation when you change things like *PACKAGE*
3224 and *PRINT-LENGTH*) to symbols and lists of symbols
3225 He also made several improvements and fixed several bugs in DESCRIBE.
3226 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3228 *** misbehavior of WRITE-STRING/WRITE-LINE
3229 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3230 and several other LOOP problems as well
3231 *** DIRECTORY when similar filenames are present
3232 *** DEFGENERIC with :METHOD options
3233 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3234 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3235 *** argument ordering in FIND with :TEST option
3236 *** mishandled package designator argument in APROPOS-LIST
3237 *** various problems in the backquote readmacro
3238 *** a bug in APROPOS
3239 *** probably some others that I'm not describing very well here,
3240 since the CVS log documents them by reference to sbcl-devel
3241 messages, and the SourceForge archives aren't working well.:-(
3242 ** Dan Barlow improved the Alpha port (and is making progress on the
3243 PPC port, for those of you who think different).
3244 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3245 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3246 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3247 continues to work on the SPARC port (for those of you in a position
3248 to look down upon our little PC-compatible boxes from a great height).
3249 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3250 and uses that copy, rather than the current dynamic value, when
3251 it's trying to decide whether to truncate output. Thus e.g.
3252 (let ((*print-lines* 50))
3253 (pprint-logical-block (stream nil)
3255 (let ((*print-lines* 8))
3256 (print (aref possiblybigthings i) stream)))))
3257 should now truncate the logical block only at 50 lines, instead of
3258 often truncating it at 8 lines, as it did before.
3259 * The doc/cmucl/ directory, containing old CMU CL documentation
3260 from the time of the fork, is no longer part of the base system.
3261 SourceForge has shut down its anonymous FTP service, and with it
3262 my original plan for distributing the old CMU CL documentation
3263 there. For now, if you need these files you can download an old
3264 SBCL source release and extract them from it.
3265 * The fasl file version number changed again, for dozens of reasons,
3266 some of which are apparent above.
3268 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3269 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3270 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3271 patch, so that DISASSEMBLE output is much nicer.
3272 * The code in the SB-PROFILE package now seems reasonably stable.
3273 I still haven't decided what the final interface should look like
3274 (I'd like PROFILE to interact cleanly with TRACE, since both
3275 facilities use function encapsulation) but if you have a need
3276 for profiling now, you can probably use it successfully with
3277 the current CMU-CL-style interface.
3278 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3279 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3280 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3281 link now returns the dangling link itself, and for similar
3282 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3283 link itself. (In these cases the old code signalled an error and
3284 looped endlessly, respectively.) Thus, DIRECTORY now works even
3285 in the presence of dangling and cyclic symbolic links.
3286 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3287 is now a supported extension again, since the consensus on
3288 sbcl-devel was that it can be useful for ordinary development
3289 work, not just for debugging SBCL itself.
3290 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3291 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3292 that currently-defined functions might be redefined later with
3293 different return types.
3294 * Hash tables can be printed readably, as inspired by CMU CL code
3295 of Eric Marsden and SBCL code of Martin Atzmueller.
3296 * better error handling in CLOS method combination, thanks to
3297 Martin Atzmueller porting Pierre Mai's CMU CL patches
3298 * more overflow fixes for >16Mbyte I/O buffers
3299 * A bug in READ has been fixed, so that now a single Ctrl-D
3300 character suffices to cause end-of-file on character streams.
3301 In particular, now you only need one Ctrl-D at the command
3302 line (not two) to exit SBCL.
3303 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3305 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3306 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3307 does the right thing.
3308 * The implementation of some type tests, especially for CONDITION
3309 types, is now tidier and maybe faster, due to CMU CL code
3310 originally by Douglas Crosher, ported by Martin Atzmueller.
3311 * Some math functions have been fixed, and there are new
3312 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3313 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3314 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3315 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3316 likely to be built into sbcl-0.7.0.)
3317 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3318 CL, ported to SBCL by Martin Atzmueller)
3319 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3320 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3321 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3322 * There's a new slam.sh hack to shorten the edit/compile/debug
3323 cycle for low-level changes to SBCL itself, and a new
3324 :SB-AFTER-XC-CORE target feature to control the generation of
3325 the after-xc.core file needed by slam.sh.
3326 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3327 COMPILE-FILE is no longer supported, so that now every function
3328 gets an entry point, so that block compilation looks a little
3329 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3330 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3331 returns the number of bytes consed since the system started,
3332 rather than the number consed since the first time the function
3333 was called. (The new definition parallels ANSI functions like
3334 CL:GET-INTERNAL-RUN-TIME.)
3335 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3336 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3337 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3338 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3339 * Fasl file version numbers are now independent of the target CPU,
3340 since historically most system changes which required version
3341 number changes have affected all CPUs equally. Similarly,
3342 the byte fasl file version is now equal to the ordinary
3345 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3346 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3347 is no longer recognized. I apologize for this, because it was
3348 listed in SB-EXT as a supported extension, but I found that
3349 its existing behavior was poorly specified, as well as incorrectly
3350 specified, and it looked like too much of a mess to straighten it
3351 out. I have enough on my hands trying to get ANSI stuff to work..
3352 * many patches ported from CMU CL by Martin Atzmueller, with
3353 half a dozen bug fixes in pretty-printing and the debugger, and
3354 half a dozen others elsewhere
3355 * fixed bug 13: Floating point infinities are now supported again.
3356 They might still be a little bit flaky, but thanks to bug reports
3357 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3358 as flaky as they were.
3359 * The --noprogrammer command line option is now supported. (Its
3360 behavior is slightly different in detail from what the old man
3361 page claimed it would do, but it's still appropriate under the
3362 same circumstances that the man page talks about.)
3363 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3364 are now supported, and enabled by default. Thus, the compiler can
3365 handle many floating point and complex operations much less
3366 inefficiently. (Thus e.g. you can implement a complex FFT
3368 * The compiler now detects type mismatches between DECLAIM FTYPE
3369 and DEFUN better, and implements CHECK-TYPE more correctly, and
3370 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3371 thanks to patches from Martin Atzmueller.
3372 * various fixes to make the cross-compiler more portable to
3373 ANSI-conforming-but-different cross-compilation hosts (notably
3374 Lispworks for Windows, following bug reports from Arthur Lemmens)
3375 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3376 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3377 fixed thanks to Pierre Mai's CMU CL patches.
3378 * fixes to keep the system from overflowing internal counters when
3379 it tries to use i/o buffers larger than 16M bytes
3380 * fixed bug 45a: Various internal functions required to support
3381 complex special functions have been merged from CMU CL sources.
3382 (When I was first setting up SBCL, I misunderstood a compile-time
3383 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3384 * improved support for type intersection and union, fixing bug 12
3385 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3386 more obscure bugs as well
3387 * some steps toward byte-compiling non-performance-critical
3388 parts of the system, courtesy of patches from Martin Atzmueller
3389 * Christophe Rhodes has made some debian packages of sbcl at
3390 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3391 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3392 stable, but are nonetheless usable. When he's ready, I'd be happy
3393 to add them to the SourceForge "File Releases" section. (And if
3394 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3395 * new fasl file format version number (because of changes in
3396 internal representation of (OR ..) types to accommodate the new
3397 support for (AND ..) types, among other things)
3399 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3400 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3402 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3404 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3405 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3406 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3407 * DESCRIBE now works on structure objects again.
3408 * Most function call argument type mismatches are now handled as
3409 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3410 know whether the function will be redefined before the call is
3411 executed. (The compiler could flag local calls with full WARNINGs,
3412 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3413 it doesn't keep track of enough information to know whether calls
3414 are local in this sense.)
3415 * Compiler output is now more verbose, with messages truncated
3416 later than before. (There should be some supported way for users
3417 to override the default verbosity, but I haven't decided how to
3418 provide it yet, so this behavior is still controlled by the internal
3419 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3420 src/compiler/ir1util.lisp.)
3421 * Fasl file format version numbers have increased again, because
3422 support for the Gray streams extension changes the layout of the
3423 system's STREAM objects.
3424 * The Gray subclassable streams extension now works, thanks to a
3425 patch from Martin Atzmueller.
3426 * The full LOAD-FOREIGN extension (not just the primitive
3427 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3428 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3429 but like most other programs, it defaults to copying the Unix
3430 environment from the original process instead of starting the
3431 new process in an empty environment.
3432 * Extensions which manipulate the Unix environment now support
3433 an :ENVIRONMENT keyword option which doesn't smash case or
3434 do other bad things. The CMU-CL-style :ENV option is retained
3435 for porting convenience.
3436 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3437 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3439 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3441 * A patch from Martin Atzmueller seems to have solved the SIGINT
3442 problem, and as far as we know, signal-handling now works cleanly.
3443 (If you find any new bugs, please report them!)
3444 * The system no longer defaults Lisp source file names to types
3445 ".l", ".cl", or ".lsp", but only to ".lisp".
3446 * The compiler no longer uses special default file extensions for
3447 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3448 seems to expect a single default extension for all compiled code,
3449 and there's no compelling reason to try to stretch the standard
3450 to allow two different extensions.) Instead, byte-compiled files
3451 default to the same extension as native-compiled files.
3452 * Fasl file format version numbers have increased again, because
3453 a rearrangement of internal implementation packages made some
3454 dumped symbols in old fasl files unreadable in new cores.
3455 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3456 many fewer weird special cases.
3457 * Bug #17 (differing COMPILE-FILE behavior between logical and
3458 physical pathnames) has been fixed, and some related misbehavior too,
3459 thanks to a patch from Martin Atzmueller.
3460 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3461 by Tim Moore, ported to SBCL by Martin Atzmueller.
3462 * Martin Atzmueller fixed several filesystem-related problems,
3463 including bug #36, in part by porting CMU CL patches, which were
3464 written in part by Paul Werkowski.
3465 * More compiler warnings in src/runtime/ are gone, thanks to
3466 more patches from Martin Atzmueller.
3467 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3470 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3472 * DESCRIBE now works on CONDITION objects.
3473 * The debugger now handles errors which arise when trying to print
3474 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3476 * The build system now uses an additional file, customize-target-features.lisp,
3477 to allow local modifications to the target *FEATURES* list. (The point of
3478 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3479 debugging features enabled, without having to worry about propagating it
3480 into everyone's system when I do a "cvs update".) When no
3481 customize-target-features.lisp file exists, the target *FEATURES* list
3482 should be constructed the same way as before.
3483 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3484 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3485 warn about behavior which is undefined under the ANSI spec. Note: This
3486 is specified by ANSI, but it's not very popular with programmers.
3487 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3488 macro in the SBCL sources for an example of a workaround which you
3489 might use to make portable ANSI-standard code which does what you want.
3490 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3491 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3492 when it's used as a non-toplevel form. (This is required in order
3493 to implement the DEFCONSTANT-EQX macro.)
3494 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3495 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3496 funny things, due to bugs in the implementation of EVAL-WHEN
3497 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3498 non-toplevel DEFCONSTANTs are uncommon.)
3499 * The core file version number and fasl file version number have been
3500 incremented, because the old noncompliant DEFCONSTANT behavior involved
3501 calling functions which no longer exist, and because I also took the
3502 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3503 * fixed bug 1 (error handling before read-eval-print loop starts), and
3504 redid debugger restarts and related debugger commands somewhat while
3506 ** The QUIT debugger command is gone, since it did something
3507 rather different than the SB-EXT:QUIT command, and since it never
3508 worked properly outside the main toplevel read/eval/print loop.
3509 Invoking the new TOPLEVEL restart provides the same functionality.
3510 ** The GO debugger command is also gone, since you can just invoke
3511 the CONTINUE restart directly instead.
3512 ** The TOP debugger command is also gone, since it's redundant with the
3513 FRAME 0 command, and since it interfered with abbreviations for the
3515 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3517 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3518 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3519 some porting work by Martin Atzmueller)
3520 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3521 with a boatload of patches which he ported to SBCL. Now that those
3523 ** The system tries to make sure that its low-priority messages
3524 are prefixed by semicolons, to help people who like to use
3525 syntax highlighting in their ILISP buffer. (This patch
3526 was originally due to Raymond Toy.)
3527 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3528 patches originally written by Raymond Toy.
3529 ** The compiler understands coercion between single-value and
3530 multiple-VALUES type expressions better, getting rid of some very
3531 weird behavior, thanks to patches originally by Robert MacLachlan
3532 and Douglas Crosher.
3533 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3534 lambda lists, thanks to a patch originally by Pierre Mai.
3535 ** The system no longer bogusly warns about "abbreviated type
3537 ** The compiler gets less confused by inlining and RETURN-FROM,
3538 thanks to some patches originally by Tim Moore.
3539 ** The system no longer hangs when dumping circular lists to fasl
3540 files, thanks to a patch originally from Douglas Crosher.
3541 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3542 undefined function error.
3543 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3544 in structure slot initforms) for now, documented workaround instead:-|
3545 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3546 * fixed bug 5: added stubs for various Gray stream functions called
3547 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3548 installed, at least appropriate type errors are generated
3549 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3550 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3551 consistently in DEFMETHOD forms.
3552 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3553 it doesn't seem to affect SBCL after all
3554 * The C runtime system now builds with better optimization and many
3555 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3557 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3559 * The system is now under CVS at SourceForge (instead of the
3560 CVS repository on my home machine).
3561 * The new signal handling code has been tweaked to treat register
3562 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3563 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3564 downstream, e.g. in debug-int.lisp, has implicit dependencies
3565 on the unsignedness of integer representation of machine words,
3566 and that caused the system to bomb out with infinite regress
3567 when trying to recover from type errors involving signed values,
3568 e.g. (BUTLAST '(1 2 3) -1).)
3569 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3570 (This was one of the bugs Peter Van Eynde reported back in July.)
3571 * The system now uses code inspired by Colin Walters' O(N)
3572 implementation of MAP (from the cmucl-imp@cons.org mailing
3573 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3574 inline the MAP operation, and there is more than one
3575 sequence argument to the MAP call (so that it can't just
3576 do ETYPECASE once and for all based on the type of the
3577 single sequence argument). (The old non-inline implementation
3578 of the general M-argument sequence-of-length-N case required
3579 O(M*N*N) time when any of the sequence arguments were LISTs.)
3580 * The QUIT :UNIX-CODE keyword argument has been renamed to
3581 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3582 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3584 * Raymond Wiker's patches to port dynamic loading from Linux to
3585 FreeBSD have been added.
3586 * The BUGS file is now more nearly up to date, thanks in large part
3587 to Martin Atzmueller's review of it.
3588 * The debugger now flushes standard output streams before it begins
3589 its output ("debugger invoked" and so forth).
3590 * The core version number and fasl file version number have both
3591 been incremented, because of incompatible changes in the layout
3593 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3594 used to not be called for a saved Lisp image.)
3595 * Martin Atzmueller's version of a patch to fix a compiler crash,
3596 as posted on sbcl-devel 13 September 2000, has been installed.
3597 * Instead of installing Martin Atzmueller's patch for the
3598 compiler transform for SUBSEQ, I deleted the compiler transform,
3599 and transforms for some similar consing operations.
3600 * A bug in signal handling which kept TRACE from working on OpenBSD
3602 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3603 away by constant folding
3604 * The system now defines its address space constants in one place
3605 (in the Lisp sources), and propagates them automatically elsewhere
3606 (through GENESIS and the sbcl.h file). Therefore, patching the
3607 address map is less unnecessarily tedious and error-prone. The
3608 Lisp names of address space constants have also been systematized.
3609 * CVS tags like dollar-Header-dollar have been removed from
3610 the sources, because they have never saved me trouble and
3611 they've been source of trouble working with patches and other
3612 diff-related operations.
3613 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3614 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3616 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3618 * The system has been ported to OpenBSD.
3619 * The system now compiles with a simple "sh make.sh" on the systems
3620 that it's supported on. I.e., now you no longer need to tweak
3621 text in the target-features.lisp-expr and symlinks in src/runtime/
3622 by hand, the make.sh takes care of it for you.
3623 * The system is no longer so grossly inefficient when compiling code
3624 involving vectors implemented as general (not simple) vectors (VECTOR T),
3625 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3626 which dares to use the various sequence functions on non-simple
3627 vectors, takes less of a performance hit.
3628 * There is now a primitive type predicate VECTOR-T-P
3629 to test for the (VECTOR T) type, so that e.g.
3630 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3631 can now be compiled with some semblance of efficiency. (The old code
3632 turned the type declaration into a full call to %TYPEP at runtime!)
3633 * AREF on (VECTOR T) is still not fast, since it's still compiled
3634 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3635 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3636 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3637 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3638 without making full calls to SUBTYPEP at runtime.
3639 (Some analogous efficiency issues for non-simple vectors specialized to
3640 element types other than T, or for non-simple multidimensional arrays,
3641 have not been addressed. They could almost certainly be handled the
3642 same way if anyone is motivated to do so.)
3643 * The changes in array handling break binary compatibility, so
3644 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3645 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3646 instead of (VALUES T T).
3647 * By following the instructions that Dan Barlow posted to sbcl-devel
3648 on 2 July 2000, I was able to enable primitive dynamic object
3649 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3650 functionality is not implemented (since it calls ld to resolve
3651 library references automatically, requiring RUN-PROGRAM for its
3652 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3653 try to resolve library references) is now supported.
3654 * The system now flushes the standard output streams when it terminates,
3655 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3656 them at several other probably-convenient times, e.g. in each pass of
3657 the toplevel read-eval-print loop, and after evaluating a form given
3658 as an "--eval" command-line option. (These changes were motivated by a
3659 discussion of stream flushing issues on cmucl-imp in August 2000.)
3660 * The source transform for TYPEP of array types no longer assumes
3661 that an array whose element type is a not-yet-defined type
3662 is implemented as an array of T, but instead punts, so that the
3663 type will be interpreted at runtime.
3664 * There is now some support for cross-compiling in make.sh: each of
3665 the phases of make.sh has its own script. (This should be transparent
3666 to people doing ordinary, non-cross-compile builds.)
3667 * Since my laptop doesn't have hundreds of megabytes of memory like
3668 my desktop machine, I became more motivated to do some items on
3669 my to-do list in order to reduce the size of the system a little:
3670 ** Arrange for various needed-only-at-cold-init things to be
3671 uninterned after cold init. To support this, those things have
3672 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3673 symbols with such names are now uninterned after cold init).
3674 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3675 fasl files for cold load.
3676 ** Remove the old compiler structure pooling code (which used to
3677 be conditional on the target feature :SB-ALLOC) completely.
3678 ** Redo the representation of some data in cold init to be more compact.
3679 (I also looked into supporting byte compiled code at bootstrap time,
3680 which would probably reduce the size of the system a lot, but that
3681 looked too complicated, so I punted for now.)
3682 * The maximum signal nesting depth in the src/runtime/ support code has
3683 been reduced from 4096 to 256. (I don't know any reason for the very
3684 large old value. If the new smaller value turns out to break something,
3685 I'll probably just bump it back up.)
3686 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3688 * Many, many bugs reported by Peter Van Eynde have been added to
3689 the BUGS list; some have even been fixed.
3690 * While enabling dynamic object file loading, I tried to make the
3691 code easier to understand, renaming various functions and variables
3692 with less ambiguous names, and changing some function calling
3693 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3694 * While trying to figure out how to do the OpenBSD port, I tried to
3695 clean up some of the code in src/runtime/. In particular, I dropped
3696 support for non-POSIX signal handling, added various comments,
3697 tweaked the code to reduce the number of compilation warnings, and
3698 renamed some files to increase consistency.
3699 * To support the new automatic configuration functionality in make.sh,
3700 the source file target-features.lisp-expr has been replaced with the
3701 source file base-target-features.lisp-expr and the machine-generated
3702 file local-target-features.lisp-expr.
3703 * fixed a stupid quoting error in make.sh so that using CMU CL
3704 "lisp -batch" as cross-compilation host works again
3706 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3708 * DESCRIBE no longer tries to call itself recursively to describe
3709 bound/fbound values, so that it no longer fails on symbols which are
3710 bound to themselves (like keywords, T, and NIL).
3711 * DESCRIBE now works on generic functions.
3712 * The printer now prints less-screwed-up representations of closures
3713 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3714 * A private symbol is used instead of the :EMPTY keyword previously
3715 used to mark empty slots in hash tables. Thus
3716 (DEFVAR *HT* (MAKE-HASH-TABLE))
3717 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3718 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3719 now does what ANSI says that it should. (You can still get
3720 similar noncompliant behavior if bang on the hash table
3721 implementation with all the symbols you get back from
3722 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3723 This breaks binary compatibility, since tests for equality to
3724 :EMPTY are wired into things like the macroexpansion of
3725 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3727 * There's now a minimal placeholder implementation for CL:STEP,
3728 as required by ANSI.
3729 * An obscure bug in the interaction of the normal compiler, the byte
3730 compiler, inlining, and structure predicates has been patched
3731 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3732 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3734 * Missing ordinary arguments in a macro call are now detected even
3735 when the macro lambda list contains &KEY or &REST.
3736 * The debugger no longer complains about encountering the top of the
3737 stack when you type "FRAME 0" to explicitly instruct it to go to
3738 the top of the stack. And it now prints the frame you request even
3739 if it's the current frame (instead of saying "You are here.").
3740 * As specified by ANSI, the system now always prints keywords
3741 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3743 * The default initial SIZE of HASH-TABLEs is now smaller.
3744 * Type information from CLOS class dispatch is now propagated
3745 into DEFMETHOD bodies, so that e.g.
3746 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3748 is now basically equivalent to
3749 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3750 (DECLARE (TYPE SINGLE-FLOAT X))
3752 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3753 operation, without having to do run-time type dispatch.
3754 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3755 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3756 * Since I don't seem to be making big file reorganizations very often
3757 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3758 is overflowing my ability to conveniently back them up), I've finally
3759 checked the system into CVS. (The CVS repository is on my home system,
3760 not at SourceForge -- putting it on SourceForge might come later.)
3761 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3762 high-level GC-NOTIFY-FOO functions send their output. (There's
3763 still very little control of where low-level verbose GC functions
3764 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3765 less than it used to -- the GC-NOTIFY-FOO functions are now under
3766 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3767 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3768 in only one place in the source code, and propagates it automatically
3769 everywhere that it's needed. Thus e.g. when I bump the version from
3770 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3771 * The C source files now include boilerplate legalese and documentation
3772 at the head of each file (just as the Lisp source files already did).
3773 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3774 to his page will be replaced with a link to his new CLiki service.
3776 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3778 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3779 * The build process now looks for GNU make under the default name "gmake",
3780 instead of "make" as it used to. If GNU make is not available as "gmake"
3781 on your system, you can change this default behavior by setting the
3782 GNUMAKE environment variable.
3783 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3784 can build without error under CMU CL.
3786 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3788 * There is now a partial SBCL user manual (with some new text and some
3789 text cribbed from the CMU CL manual).
3790 * The beginnings of a profiler have been added (starting with the
3791 CMU CL profiler and simplifying and cleaning up). Eventually the
3792 main interface should be through the TRACE macro, but for now,
3793 it's still accessed through vaguely CMU-CL-style functions and macros
3794 exported from the package SB-PROFILE.
3795 * Some problems left over from porting CMU CL to the new
3796 cross-compilation bootstrap process have been cleaned up:
3797 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3798 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3799 part when getting rid of the compiler *BACKEND* stuff.)
3800 ** The value of *NULL-TYPE* was screwed up, because it was
3801 being initialized before the type system knew the final
3802 definition of the 'NULL type. This screwed up several key
3803 optimizations in the compiler, causing inefficiency in all sorts
3804 of places. (I found it because I wanted to understand why
3805 GET-INTERNAL-RUN-TIME was consing.)
3806 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3807 PROCLAIM FTYPE information. Unfortunately this broke binary
3808 compatibility again, since now the forms output by DEFGENERIC
3809 to refer to functions which didn't exist in 0.6.3.
3810 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3811 can use the new (as of 0.6.3) transform for SOME into MAP into
3813 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3814 values to (INTEGER 0 1000000), so that the time code will no longer
3815 occasionally get blown up by Linux returning 1000000 microseconds
3816 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3817 its output conform to the ANSI spec. (Alas, this makes its output
3818 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3819 * A full call to MAP NIL with a single sequence argument no longer conses.
3820 * fixes to problems pointed out by Martin Atzmueller:
3821 * The manual page no longer talks about multiprocessing as though
3822 it were currently supported.
3823 * The ILISP support patches have been removed from the distribution,
3824 because as of version 5.10.1, ILISP now supports SBCL without us
3825 having to maintain patches.
3826 * added a modified version of Raymond Toy's recent CMU CL patch for
3827 EQUALP comparison of HASH-TABLE
3829 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3831 * The system still can't cross-compile itself with
3832 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3833 entails), but at least it can compile more of itself that way
3834 than it used to be able to, and various buglets which were uncovered
3835 by trying to cross-compile itself that way have now been fixed.
3836 * This release breaks binary compatibility again. This time
3837 at least I've incremented the FASL file format version to 2, so that the
3838 problem can be detected reliably instead of just causing weird errors.
3839 * various new style warnings:
3840 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3841 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3842 ** using the lexical binding of a variable named in the *FOO* style
3843 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3844 as specified by ANSI.
3845 * *RANDOM-STATE* is no longer automatically initialized from
3846 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3847 default behavior of the system is to repeat its behavior every time
3848 it's run. If you'd like to change this behavior, you can always
3849 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3850 old convention there was no comparably easy way to get the system to
3851 repeat its behavior every time it was run.
3852 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3853 FTYPE declarations has been removed, in favor of their ANSI
3854 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3855 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3856 the types of their sequence arguments can be determined at compile time.
3857 This is done through a new open code expansion for MAP which eliminates
3858 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3859 argument types can be determined at compile time.
3860 * The optimizer now transforms COERCE into an identity operation when it
3861 can prove that the coerced object is already of the correct type. (This
3862 can be a win for machine generated code, including the output of other
3863 optimization transforms, such as the MAP transform above.)
3864 * Credit information has been moved from source file headers into CREDITS.
3865 * Source file headers have been made more standard.
3866 * The CASE macro now compiles without complaining even when it has
3869 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3871 * (Note that the way that the PCL macroexpansions were rewritten
3872 to accommodate the change in DEFGENERIC below breaks binary
3873 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3874 not run under sbcl-0.6.2. Once we get out of alpha releases,
3875 i.e. hit release 1.0.0, we'll probably try to maintain binary
3876 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3877 and sbcl-1.4.4. Until then, however, it might be fairly common
3878 for maintenance releases to break binary compatibility.)
3879 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3881 * The reporting of unhandled signals has been changed to print some
3882 explanatory text as well as the report form. (Previously only
3883 the report form was printed.)
3884 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3885 it defines, so that the compiler no longer issues undefined function
3886 warnings for compiled-but-not-yet-loaded generic functions.
3887 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3888 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3889 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3890 section of the ANSI spec are supported.
3891 * The "" nickname for the "KEYWORD" package has been removed.
3892 The reader still handles symbol tokens which begin with a package marker
3893 as keywords, but it doesn't expose its mechanism for doing so in the
3894 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3895 * The system now issues STYLE-WARNINGs for contradictory TYPE
3896 proclamations. (Warnings for contradictory FTYPE proclamations would
3897 be nice too, but those can't be done usefully unless the type system
3898 is made smarter about FUNCTION types.)
3899 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3900 systematized, so that "*target-*.lisp is supposed to exist only on the
3901 target and imply that there's a related file which exists on the
3902 host, and *host-*.lisp is supposed to exist only on the host and imply
3903 that there's a related file which exists on the target. This involves a
3904 lot of renaming. Hopefully the acute confusion caused by the renaming
3905 will be justified by the reduction in chronic confusion..
3906 ** runtime-type.lisp -> early-target-type.lisp
3907 ** target-type.lisp -> late-target-type.lisp
3908 ** early-host-format.lisp -> early-format.lisp
3909 ** late-host-format.lisp -> late-format.lisp
3910 ** host-error.lisp -> misc-error.lisp
3911 ** early-error.lisp -> early-target-error.lisp
3912 ** late-error.lisp -> late-target-error.lisp
3913 ** host-defboot.lisp -> early-defboot.lisp
3914 ** code/misc.lisp -> code/target-misc.lisp
3915 ** code/host-misc.lisp -> code/misc.lisp
3916 ** code/numbers.lisp -> code/target-numbers.lisp
3917 ** code/early-numbers.lisp -> numbers.lisp
3918 ** early-host-type.lisp -> early-type.lisp
3919 ** late-host-type.lisp -> late-type.lisp
3920 ** host-typep.lisp -> typep.lisp
3921 ** load.lisp -> target-load.lisp
3922 ** host-load.lisp -> load.lisp
3923 ** host-disassem.lisp -> disassem.lisp
3924 ** host-insts.lisp -> insts.lisp
3925 ** byte-comp.lisp -> target-byte-comp.lisp
3926 ** host-byte-comp.lisp -> byte-comp.lisp
3927 ** host-signal.lisp -> signal.lisp
3928 ** host-defstruct.lisp -> defstruct.lisp
3929 ** late-target-type.lisp -> deftypes-for-target.lisp
3930 Furthermore, several other previously target-only files foo.lisp (e.g.
3931 hash-table.lisp and random.lisp) have been split into a target-and-host
3932 foo.lisp file and a target-only target-foo.lisp file, with their key type
3933 definitions in the target-and-host part, so that the cross-compiler will
3934 know more about target types.
3935 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3936 gone away. In their place are various *BACKEND-FOO* variables
3937 corresponding to the slots of the old structure.
3938 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3939 into the target SBCL has been fixed.
3940 * The chill.lisp system for loading cold code into a running SBCL
3942 * Support for the CMU CL "scavenger hook" extension has been removed.
3943 (It was undocumented and unused in the CMU CL sources that SBCL was
3944 derived from, and stale in sbcl-0.6.1.)
3945 * Various errors in the cross-compiler type system were detected
3946 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3947 (enabling various consistency checks). Many of them were fixed,
3948 but some hard problems remain, so the compiler is back to
3949 running without *TYPE-SYSTEM-INITIALIZED* for now.
3950 * As part of the cross-compiler type system cleanup, I implemented
3951 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3952 * I have started adding UNCROSS calls throughout the type system
3953 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3954 on cross-compiler input files will be able to go away, and various
3956 * CONSTANTP now returns true for quoted forms (as explicitly required
3959 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3961 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3962 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3963 (MAKE-LIST -1). In the longer term, it ought to become true
3964 that declarations are assertions even at SAFETY 1. For now, it's not
3965 quite true even at SAFETY 3, but it's at least more nearly true..
3966 (Note that this change seems to increases the size of the system by
3967 O(5%) and to decrease the speed of the compiler by 20% or more.)
3968 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3969 for the problem of printing dozens of lines of distracting information
3970 about low-level system machinery as part of the top stack frame
3971 on entry to the debugger when an undefined function was called.
3972 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3973 is not reset to COMMON-LISP-USER.
3974 * Compilation of stuff related to dyncount.lisp has been made conditional
3975 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3976 smaller. The various dyncount-related symbols have been moved into
3977 a new "SB-DYNCOUNT" package.
3978 * tty-inspect.lisp has been renamed to inspect.lisp.
3979 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3980 feature has gone away. (When we eventually port to other flavors of
3981 libc and/or Unix, we'll try to make the differences between flavors
3982 invisible at the user level.)
3983 * Various other *FEATURES* tags, and/or their associated conditionals,
3984 have been removed if obsolescent, or given better documentation, or
3985 sometimes given more-mnemonic names.
3987 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3989 * tidied up "make.sh" script
3990 * tidied up system directory structure
3991 * better "clean.sh" behavior
3992 * added doc/FOR-CMUCL-DEVELOPERS
3993 * many many small tweaks to output format, e.g. removing possibly-confusing
3994 trailing #\. character in DESCRIBE-INSTANCE
3995 * (EQUALP #\A 'A) no longer signals an error.
3996 * new hashing code, including EQUALP hashing
3997 * tidied up Lisp initialization and toplevel
3998 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3999 * command line argument processing
4000 * added POSIX-GETENV function to deal with Unix-ish environment variables
4001 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4002 terminating SBCL on EOF
4003 * non-verbose GC by default
4004 * There is no more "sbcl" shell script; the sbcl file is now the C
4005 runtime executable (just like CMU CL).
4006 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4008 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4009 symbol and package information as Lisp native symbol and package objects
4010 instead of strings naming symbols and strings naming packages. This way,
4011 whenever packages are renamed (as in warm init), debug information is
4012 transformed along with everything else.
4013 * tweaked the optimization policy declarations which control the building
4014 of SBCL itself. Now, among other things, the system no longer saves
4015 source location debugging information. (This helps two problems at once
4016 by reducing SBCL size and by keeping SBCL from trying to look for its
4017 sources -- which may not exist -- when reporting errors.)
4018 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4019 debugging and testing purposes
4020 * cleaned up printing, making the printer call PRINT-OBJECT for
4021 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4022 methods, giving nearly-ANSI behavior
4023 * converted almost all special variables to use *FOO* naming convention
4024 * deleted PARSE-TIME functionality, since it can be done portably
4025 * moved some files out of cold init into warm init
4026 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4028 * regularized formatting of source files
4029 * added an install.sh script
4030 * fixed ridiculous memory usage of cross-compiler by making
4031 compiler/alloc.lisp not try to do pooling unless it can hook
4032 itself into the GC of the cross-compilation host. Now the system
4033 builds nicely on my old laptop.
4034 * added :SB-ALLOC in target-features.lisp-expr
4035 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4036 was not implemented)
4037 * re-did condition handling and note reporting in the compiler. Notes
4038 are no longer handled by signalling conditions. Style warnings
4039 and warnings are handled more correctly and reported in such a way
4040 that it's easy to find one or the other in your output (so that you
4041 can e.g. figure out which of many problems caused COMPILE-FILE to
4043 * changed the severity of several compiler warnings from full WARNING
4044 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4045 compiler note reporting so that it doesn't use the condition system
4046 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4047 COMPILE-FILE command)
4048 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4049 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4050 no longer supported, since their implementation was deeply intertwingled
4051 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4052 * removed bogus "support" for compiler macros named (SETF FOO), and
4053 removed the compiler macro for SETF INFO (but only after making a fool
4054 of myself on the cmucl-imp mailing list by posting a bogus patch for
4055 DEFINE-COMPILER-MACRO..)
4056 * Compiled files containing forms which have side effects on the Lisp
4057 reader (such as DEFPACKAGE forms) are now handled more correctly.
4058 (Compiler queuing of top level lambdas has been suppressed by setting
4059 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4060 * deleted various currently-unused source files, e.g. gengc.lisp. They
4061 may be added back at some point e.g. when porting to other architectures,
4062 but until they are it's distracting to distribute them and to try to
4064 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4065 there were so many of them they're just distractions, and UNCROSS is
4066 known to be able to handle the current sources
4067 * moved PROFILE functionality into TRACE, so that it will be clear
4068 how the wrapping and unwrapping of functions when you profile them
4069 interacts with the wrapping and unwrapping of functions when you
4070 trace them. (Actually, the functionality isn't there yet, but at least
4071 the interface specification is there. Hopefully, the functionality will
4072 arrive with some future maintenance release.)
4073 * removed host-oops.lisp
4074 * changed signature of QUIT function to allow UNIX-CODE argument
4075 * fixed READ-SEQUENCE bug
4076 * tweaked verbose GC output so that it looks more like the progress
4077 output that ANSI specifies for functions like LOAD
4078 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4079 * added <http://sbcl.sourceforge.com> to the banner information printed by