1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
3 * enhancement: cleaner backtraces for interactive interrupts, as
4 well as other cases where the interesting frames used to be
5 obscured by interrupt handling frames.
6 * bug fix: SORT was not interrupt safe.
7 * bug fix: XREF accounts for the last node of each basic-block as
9 * bug fix: MAKE-INSTANCE optimizations interacted badly with
10 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
11 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
13 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
14 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
15 (see documentation for details.)
16 * revived support for OpenBSD (contributed by Josh Elsasser)
17 * partially fixed bug #108: ROOM no longer suffers from occasional
18 (AVER (SAP= CURRENT END)) failures .
19 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
20 bodies no longer cause a WARNING to be signalled. (reported by
22 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
23 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
24 the bug in TRUNCATE.) (reported by Michael Weber)
25 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
26 no samples. (reported by Andy Hefner)
27 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
28 no longer appear as (NIL ...) frames in backtraces.
29 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
30 is now actually exported from SB-EXT as documented. (reported by
32 * bug fix: sb-aclrepl now correctly understands how to inspect
33 single-floats on 64-bit platforms where single-floats are not boxed.
34 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
35 yet been finalized. (reported by Levente Meszaros)
36 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
37 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
38 SBCL-specific optimize qualities.
40 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
41 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
42 an executable in the search path, and does so in the child
43 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
44 been removed; it can be found in the CVS history, for somebody who
45 needs that search behavior (see the manual).
46 * minor incompatible change: compiler policy re. weakening type
47 checks has changed: now type checks are weakened on if SAFETY < 2
49 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
50 unparsing of directory pathnames as files. Analogously,
51 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
52 filename to parse into a directory pathname.
53 * enhancement: implicit generic function creation now signals a
54 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
55 users can bind handlers for and muffle around calls to LOAD.
56 * enhancement: RUN-PROGRAM allows unicode arguments and environments
57 to be used (using the default stream external format), and allows
58 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
59 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
60 strings and vectors whose element-type or simplicity is not fully
61 known at compile-time.
62 * optimization: STRING-TRIM and related functions no longer allocate
63 a new string when no trimming needs to be performed. These functions
64 are also faster than before when the input string has been declared
66 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
67 * optimization: READ-LINE is significantly faster for files containing
69 * optimization: non-open coded uses of character comparison operators
70 (e.g. char=) no longer cons when called with more than one parameter
71 on platforms supporting dynamic-extent allocation.
72 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
73 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
74 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
76 * bug fix: some sequence functions elided bounds checking when
78 * bug fix: too liberal weakening of union-type checks when SPEED >
80 * bug fix: more bogus fixnum declarations in ROOM implementation
83 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
84 * new feature: MAKE-HASH-TABLE now experimentally accepts a
85 :SYNCHRONIZED argument, which makes the hash-table safe for
86 concurrent accesses (but not iteration.) See also:
87 SB-EXT:WITH-LOCKED-HASH-TABLE, and
88 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
89 * optimization: CONCATENATE on strings is an order of magnitue faster
90 in code compiled with (> SPEED SPACE).
91 * optimization: SUBSEQ is ~50% faster on lists.
92 * bug fix: bug 417 fixed -- source location reporting is now more robust.
93 * bug fix: SUBSEQ on a list will now correctly signal an error if if
94 END is smaller then START.
95 * bug fix: SB-PROFILE will no longer report extra consing for nested
96 calls to profiled functions.
97 * bug fix: ROOM implementation had bogus fixnum declarations which
98 could cause type-errors when calling ROOM on large images.
99 * bug fix: if file compilation is aborted, the partial fasl is now
100 deleted, and COMPILE-FILE returns NIL as the primary value.
101 * bug fix: number of thread safety issues relating to SBCL's internal
102 hash-table usage have been fixed.
103 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
104 be returned from its body when the values were being returned
105 using unknown-values return convection and the W-P-O was wrapped
106 inside an UNWIND-PROTECT.
107 * bug fix: sb-posix should now compile again under Windows, enabling
110 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
111 * incompatible change: hash-table accessor functions are no longer
112 automatically protected by locks. Concurrent accesses on the same hash-table
113 from multiple threads can give inconsistent results or even corrupt the
114 hash-table completely. Multi-threaded applications should do their own
115 locking at the correct granularity. In the current implementation it is
116 still safe to have multiple readers access the same table, but it's not
117 guaranteed that this property will be maintained in future releases.
118 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
119 and will signal an error at runtime.
120 * enhancement: SB-THREAD package now exports a semaphore interface.
121 * enhancement: CONS can now stack-allocate on x86 and
122 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
124 * enhancement: nested lists can now be stack allocated on
125 platforms providing stack allocation support.
126 * enhancement: dynamic-extent support has been extended to support
127 cases where there are multiple possible sources for the stack
129 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
130 if the mutex is uncontested on Linux.
131 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
132 as specified by the CLHS. (thanks to Tobias Rittweiler)
133 * bug fix: NaN comparison now works on x86-64.
134 * bug fix: CLOSE :ABORT T on a stream with pending output now
136 * bug fix: instances of non-standard metaclasses using standard
137 instance structure protocol sometimes missed the slot type checks
139 * bug fix: known functions can be inlined in high-debug code.
141 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
142 * minor incompatible change: the MSI installer on Windows no longer
143 associates .lisp and .fasl files with the installed SBCL.
144 * minor incompatible change: :UNIX is no longer present in *FEATURES*
145 on Windows. (thanks to Luis Oliviera)
146 * new feature: SB-CLTL2 contrib module now implements
147 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
148 * optimization: scavenging weak pointers is now more efficient,
149 requiring O(1) instead of O(N) per weak pointer to identify
150 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
151 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
152 method bodies using constant slot-names when the first argument is
153 a specializer parameter for the method.
154 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
155 names, when the class of the instance is a direct instance
156 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
157 as slow as the constant slot-name case.)
158 * optimization: member type construction is now O(N) instead
160 * optimization: UNION and NUNION are now O(N+M) for large
161 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
163 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
164 now more readable in environments like Slime which display it.
165 (thanks to Tobias C. Rittweiler)
166 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
167 was able to infer the correct argument type for the object on which
168 the CAS operation was being performed.
169 * bug fix: copy propagation interfered with parallel assignment
170 semantics in local calls. (reported by Paul Khuong)
171 * bug fix: the signed modular fixnum shift compiled to wrong code on
172 x86 and x86-64. (spotted by a slight modification to some of
175 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
176 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
177 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
178 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
180 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
181 and generic function now print the object identity for anonymous
182 instances. (thanks to Attila Lendvai)
183 * enhancement: as an extension to MOP, SBCL now supports SETF of
184 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
185 (thanks to Attila Lendvai)
186 * enhancement: sb-cover has an alternate annotation mode which puts
187 the form annotations at the car of the form, instead of annotating
188 it completely. The benefit of this mode is that it shows better
189 which forms were instrumented by the compiler.
190 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
191 by printer control variables. (reported by Dan Corkill)
192 * bug fix: system leaked memory when delayed output was performed by
193 the OS in smaller chunks then expected. (thanks to David Smith)
194 * bug fix: system leaked memory when file streams were not closed
196 * bug fix: large objects written to slow streams that were modified
197 after the write could end up with the modified state written to
198 the underlying file descriptor.
199 * bug fix: multiple threads operating in parallel on the same stream
200 could cause buffer-overflows.
201 * bug fix: source location information is stored correctly
202 (broken since 1.0.6). This bug would generally show up as the
203 Slime debugger higlighting the wrong form when the sldb-show-source
205 * bug fix: Branch forms are again annotated as branches in the sb-cover
207 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
208 on x86-64. (reported by Gregory Vanuxem)
209 * bug fix: EQUALP could return wrong results for structures with raw
210 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
211 word). (reported by Vjacheslav Fyodorov)
212 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
215 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
216 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
217 atomic compare-and-swap operations on threaded platforms.
218 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
219 allows assining a global minimum value to optimization qualities
220 (overriding proclamations and declarations).
221 * enhancement: closed over variables can be stack-allocated on x86
223 * performance bug fix: GETHASH and (SETF GETHASH) are once again
225 * optimization: slot definition lookup is now O(1). This speeds up
226 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
227 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
228 * optimization: ASSOC and MEMBER can now be open-coded for all
229 combinations of keyword arguments when second argument is constant
230 and SPEED >= SPACE. In other cases a specialized version is
232 * bug fix: using obsoleted structure instances with TYPEP and
233 generic functions now signals a sensible error.
234 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
235 (reported by Kristoffer Kvello)
236 * bug fix: backtrace construction is now more careful when making
237 lisp-objects from pointers on the stack, to avoid creating bogus
238 objects that can be seen by the GC.
239 * bug fix: defaulting of values in contexts expecting more than 7
240 variables now works on x86-64. (reported by Christopher Laux)
241 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
243 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
244 as the property-list of a symbol.
245 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
246 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
247 situations requested, are once again file-compileable. (reported
250 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
251 * MOP improvement: support for user-defined subclasses of
252 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
253 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
254 the expansion of DEFMETHOD, is responsible for generating a form
255 which creates a list of specializers when evaluated. Additional
256 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
257 debugging and introspective support.
258 * minor incompatible change: the (unsupported) spinlock interface
259 has changed: free spinlock now has the value NIL, and a held spinlock
260 has the owning thread as its value.
261 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
262 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
264 * enhancement: name of a socket-stream is now "a socket" instead of
266 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
267 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
268 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
269 for generic functions. (Thanks to Tobias C. Rittweiler)
270 * optimization: bignum printing speed has been improved by 20-40%
271 (depending on the bignum size.)
272 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
274 * bug fix: the cache used by the CLOS to store precomputed effective
275 methods, slot offsets, and constant return values is now thread and
277 * bug fix: generic function dispatch function updating is now thread
278 and interrupt safe (in the sense that the known issues have been
280 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
281 * bug fix: interning EQL-specializers is now thread and interrupt safe.
282 * bug fix: asdf systems with dependencies to the SB-POSIX or
283 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
284 * bug fix: interrupt safety of applicable method computation has been
287 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
288 * new contrib: sb-cover, an experimental code coverage tool, is included
290 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
291 significantly faster.
292 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
293 produce more efficient code on x86-64 if the compiler can determine
294 that (+ INDEX <constant>) does not require a bounds check and FOO
295 has an element type at least 8 bits wide.
296 * enhancement: a new, experimental synchronous timeout facility is
297 provided. Refer to SB-SYS:WITH-DEADLINE for details.
298 * enhancement: when a symbol name conflict error arises, the
299 conflicting symbols are always printed with a package prefix.
300 (thanks to Kevin Reid)
301 * enhancement: stepping is now once again supported on the SPARC and
302 MIPS platforms. (It is also now more likely to work on CheneyGC
304 * enhancement: sb-sprof can now also track and report accurate call
306 * bug fixes: the treatment of non-standard subclasses of
307 SB-MOP:SPECIALIZER is more correct.
308 * incompatible change: PURIFY no longer copies the data from the
309 dynamic space into the static and read-only spaces on platforms
310 that use the generational garbage collector
311 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
313 * bug fix: GC race condition occasionally resulting in crashes with
314 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
316 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
318 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
319 a STYLE-WARNING to be signalled (regression from 1.0.4.)
320 * bug fix: an asynchronous interrupt could previously leave the
321 system running with GC inhibited.
322 * bug fix: a DECLARE form evaluated at top-level now causes an error
323 rather than silently (or verbosely) returning NIL.
324 * bug fix: trying to dissassemble functions compiled at high DEBUG could
325 result in a error being signalled due to source form lookup errors.
326 (reported by Peter Graves)
328 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
329 * incompatible change: removed writer methods for host-ent-name,
330 host-ent-addresses -- changing the values did not update the DNS
332 * minor incompatible change: changed experimental JOIN-THREAD interface
333 * documentation: the manual now lists reader and writer methods
334 in class slot documentation sections. (thanks to Richard M Kreuter)
335 * documentation: unwinding from asyncronous events has been
336 documented as unsafe.
337 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
338 in multithreaded application code.
339 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
340 platforms. (thanks to James Anderson for the optimization hint)
341 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
343 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
344 variants no longer cons.
345 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
346 their NOT- variants no longer cons.
347 * optimization: EQUAL hash tables no longer use SXHASH for objects
348 of all data types, but instead use an EQL hash for types for which
349 EQUAL is the same as EQL.
350 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
351 are significantly faster.
352 * optimization: new STRING-OUTPUT-STREAM implementation is much
353 faster for large outputs and conses 30% less on average.
354 * enhancement: XREF information is now collected for references made
355 to global variables using SYMBOL-VALUE and a constant argument.
356 * enhancement: SIGINT now causes a specific condition
357 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
358 * bug fix: FILE-POSITION used to signal an error in some cases where
359 ANSI requires it to return NIL.
360 * bug fix: ADJUST-ARRAY is now interrupt-safe.
361 * bug fix: adding and removing fd-handlers is now interrupt-safe.
362 * bug fix: inlined calls to C now ensure 16byte stack alignment on
364 * bug fix: bad type declaration in the CLOS implementation has
365 been fixed. (reported by James Anderson)
366 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
367 (thanks to Lutz Euler)
368 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
369 required by the CLHS. (reported by Samium Gromoff)
370 * bug fix: dead unbound variable references now signal an error.
371 (reported by Marco Monteiro)
372 * bug fix: / with an unused value was being deleted in safe code.
373 (thanks to Marco Monteiro and Kevin Reid)
374 * bug fix: number of characters that can be written onto a single
375 line in a file is unlimited.
376 * bug fix: some GC deadlocks caused by asynchronous interrupts have
377 been fixed by inhibiting interrupts for when GC is disbled.
378 * bug fix: some interrupt safety issues with GETHASH, (SETF
379 GETHASH), CLRHASH and REMHASH have been fixed.
380 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
381 specifier no longer causes infinite recursion.
382 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
383 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
384 * bug fix: an &environment argument with the correct variable information
385 is passed to macros that are expanded during byte compilation.
386 (reported by Samium Gromoff)
387 * bug fix: a logic error was causing the hash function for bignums to
388 have excessive amounts of collisions. (reported by Faré Rideau)
389 * bug fix: modifying the contents of an array could change the return
390 value of SXHASH on that array, which is only allowed for strings
391 and bit vectors. (bug introduced in 0.9.16)
392 * improvement: the x86-64/darwin port now passes all tests (except
393 for the debugger tests) but should still be considered
394 experimental until this is fixed.
395 * improvement: a style-warning is signaled for CASE (etc) clauses with
396 duplicate keys. (thanks to Kevin Reid)
397 * improvement: macos/x86 and macos/x86-64 now use mach exception
398 handlers for dealing with illegal instructions (for trapping and
399 error handling) and memory protection violations (for GC).
401 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
402 * new platform: experimental support for x86-64/darwin (MacOS).
403 * incompatible change: the thread-safe (on most platforms) getaddrinfo
404 and getnameinfo sockets functions are used instead of gethostbyaddr
405 and gethostbyname, on platforms where the newer functions are available.
406 As a result, the ALIASES field of HOST-ENT will always be NIL on these
408 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
409 don't print the startup banner, but behave as if --noinform was passed
410 as a command line argument. (thanks to Kevin Reid)
411 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
412 * optimization: code using alien values with undeclared types is much faster.
413 * optimization: the compiler is now able to open code SEARCH in more cases.
414 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
415 * bug fix: using standardized COMMON-LISP special variables as loop
416 variables no longer signals bogus package lock violations. (reported
418 * bug fix: declaring local loop variables to be of a range-limited type
419 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
420 (reported by Andras Simon)
421 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
422 bugs remain on x86-64.)
423 * bug fix: the #= and ## reader macros now interact reasonably with
424 funcallable instances.
425 * bug fix: type-checks for function arguments were compiled using the
426 compiler policy settings of the wrong lexical environment (in 1.0.2
428 * bug fix: SHADOW accepts characters as string designators, as required
429 by the spec (thanks to Eric Marsden)
430 * bug fix: fixed GC safety issues when foreign functions are called with
431 non-base strings as arguments
432 * bug fix: more consistent error output for fatal-compiler-warnings, like
434 * bug fix: functions with proper names were showing up as NIL in
435 backtraces (reported by Edi Weitz, regression in 1.0.2)
437 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
438 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
439 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
440 produce more efficient code on the x86 if the compiler can determine
441 that (+ INDEX <constant>) does not require a bounds check and FOO
442 has an element type at least 8 bits wide.
443 * bug fix: references to undefined variables are handled the same way
444 in toplevel forms as in the normal compiler
445 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
447 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
448 (thanks to Jon Buller)
449 * improvement: faster compilation times for complex functions
450 * improvement: added readlink support to SB-POSIX (thanks to Richard
453 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
454 * improvement: experimental support for mach exception handling on
455 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
457 * improvement: support for GBK external format.
458 (thanks to Chun Tian (binghe))
459 * improvement: the debugger now displays variables that have been closed
460 over, in code compiled with (DEBUG 2) or higher
461 * improvement: support for executable cores on NetBSD (thanks to
463 * new feature: added a RESTART-FRAME debugger command
464 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
465 be used to provide an implementation for FILE-POSITION on Gray streams
466 (thanks to Eric Marsden)
467 * new feature: add syslog, openlog and closelog support to SB-POSIX
468 (thanks to Richard Kreuter)
469 * optimization: the function call overhead in code compiled with
470 a high DEBUG optimization setting is significantly
471 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
472 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
473 (thanks to Tony Martinez)
474 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
475 evaluated once (reported by Kevin Reid)
476 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
477 works again (thanks to Kilian Sprotte)
478 * bug fix: an error is signaled for tagbodies with duplicate tags
479 (thanks to Stephen Wilson)
480 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
481 * bug fix: Win32 port can now handle foreign code unwinding Lisp
482 stack frames from alien callbacks.
483 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
484 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
485 65k pages (thanks to David Woodhouse)
486 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
488 changes in sbcl-1.0.1 relative to sbcl-1.0:
489 * new platform: FreeBSD/x86-64, including support for threading.
490 * new feature: the compiler stores cross-referencing information
491 abount function calls (who-calls), macroexpansion (who-macroexpands)
492 and special variables (who-binds, who-sets, who-references) for code
493 compiled with (< SPACE 3). This information is available through the
494 sb-introspect contrib.
495 * new feature: users may subclass SEQUENCE, and have instances of
496 these classes interoperate with standard Common Lisp functions if
497 a number of methods are defined. (This feature is experimental
498 and the interface subject to change based on feedback from SBCL
499 users and the general community)
500 * improvement: sb-sprof traces call stacks to an arbitrary depth on
501 x86/x86-64, rather than the previous fixed depth of 8
502 * improvement: another pthread back-end of mutex "pthread-futex".
503 * bug fix: non-ascii command-line arguments are processed correctly
504 (thanks to Yaroslav Kavenchuk)
505 * bug fix: non-required arguments were not passed correctly when a method
506 defined using DEFMETHOD was called from a mop-generated method using
507 CALL-NEXT-METHOD (reported by Pascal Costanza)
508 * bug fix: recursion is now permitted in accessors through
509 SLOT-UNBOUND. (reported by Pascal Costanza)
510 * bug fix: an error was signaled at startup if the HOME environment
511 variable was defined, but had an empty value (reported by Peter Van Eynde)
512 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
513 signal a PROGRAM-ERROR, not a BUG.
514 * bug fix: SB-POSIX:READDIR works when built with large file support.
515 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
517 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
518 for better automatic indentation support. (thanks to Matt Pillsbury)
519 * optimization: loading generic functions no longer takes O(n^2) time,
520 proportional to the amount of methods in the generic function
521 (reported by Todd Sabin and Jeremy Brown)
522 * optimization: the FIND and POSITION family of sequence functions
523 are significantly faster on arrays whose element types have been
525 * improvements to the Windows port:
526 ** Intermittent heap corruption problems have been fixed. (thanks
527 to Alastair Bridgewater)
528 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
530 ** Lisp is able to unwind foreign exception frames from alien
531 callbacks. (thanks to Alastair Bridgewater)
533 changes in sbcl-1.0 relative to sbcl-0.9.18:
534 * improvement: experimental support for threading on FreeBSD/x86.
535 (thanks to NIIMI Satoshi)
536 * improvement: runtime option --dynamic-space-size can be used
537 to set the size of the dynamic space reserved on startup.
538 * improvement: floating point modes in effect are now saved in
539 core, and restored on startup.
540 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
541 startup, not time since first call to GET-INTERNAL-REAL-TIME.
542 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
543 threads are not running after *SAVE-HOOKS* have run.
544 * improvement: writes to CLOS instance slots are type-checked in code
545 compiled with (SAFETY 3)
546 * improvement: floating-point exception handling on FreeBSD (thanks to
548 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
549 (thanks to Zach Beane)
550 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
552 * improvement: added support for the Shift-JIS external format.
553 (contributed by NIIMI Satoshi)
554 * improvement: callbacks are supported on Linux/PPC. (thanks to
556 * bug fix: compiler bug triggered by a (non-standard) VALUES
557 declaration in a LET* was fixed. (reported by Kaersten Poeck)
558 * bug fix: file compiler no longer confuses validated and already
559 dumped structurres. (reported by Kaersten Poeck)
560 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
561 fill-pointer signals a type-error as required. (thanks to
563 * bug fix: disassemly of funcallable instances works.
564 * bug fix: single stepping on PPC.
565 * bug fix: fix thread-safety problems in the type system (generally
566 manifesting as nonsensical errors like "STRING is a bad type specifier
567 for sequences" or "The value 1 is not of type FIXNUM")
568 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
569 (reported by Josip Gracin)
570 * bug fix: an error is signaled for attempts to displace arrays with
571 incompatible element types (thanks to Mario Mommer)
572 * bug fix: more correct handling of wide characters in debug info
573 (bug reported by Attila Lendvai and fixed by Juho Snellman)
574 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
575 and don't cause extra consing
576 * optimization: MAP and MAP-INTO are significantly faster on vectors
577 whose elements types have been declared.
578 * Improvements to SB-SPROF:
579 ** Support for allocation profiling
580 ** Reduced profiling overhead, especially for long profiling runs
581 * Improvements to the Windows port:
582 ** floating point exceptions are now reported correctly.
583 ** stack exhaustion detection works partially.
584 ** more accurate GET-INTERNAL-REAL-TIME.
585 ** better RUN-PROGRAM behaviour in case of errors in the child
587 ** PROBE-FILE now simplifies pathnames correctly.
588 ** DIRECTORY now works correctly with :WILD-INFERIORS.
589 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
590 1st 1970 (although time timezone data will be unreliable).
591 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
593 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
594 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
595 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
597 * bug fix: two potential GC deadlocks affecting threaded builds.
598 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
599 returns T (reported by Anton Kazennikov)
600 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
601 with non-variable places
602 * bug fix: remove a race condition in the setting of
603 funcallable-instance functions, this should make threaded CLOS
604 code more stable against memory faults.
605 * bug fix: corruption of specials when unbinding is interrupted by an
606 asynchronous unwind (reported by Hannu Koivisto)
607 * improvement: the debugger will now also display local variables that
608 are only used once, for code compiled with a DEBUG optimization quality
611 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
612 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
613 * incompatible change: External-format support for FFI calls. The
614 SB-ALIEN:C-STRING no longer implies an ASCII
615 external-format. Instead the string is subject to external-format
616 conversion. Additionally return values of type SB-ALIEN:C-STRING
617 are by default of type (SIMPLE-ARRAY CHARACTER), not
618 SIMPLE-BASE-STRING. For an alien type that behaves like the old
619 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
620 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
621 * incompatible change: SB-EXT package no longer contains the
622 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
623 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
625 * incompatible change: the single-stepper is no longer available
626 on Alpha, Mips and Sparc platforms.
627 * minor incompatible change: the direct superclasses of
628 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
629 not (STANDARD-OBJECT FUNCTION). This makes the
630 class-precedence-lists of GENERIC-FUNCTION and
631 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
633 * minor incompatible change: the default stream external format on
634 non-unicode SBCL is no longer detected from the locale, but is always
636 * new feature: Add a version of evaluator that uses an interpreter instead
637 of the compiler. EVAL still uses the compiler by default, to switch it
638 to use the interpreter, set the value of the variable
639 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
640 * minor incompatible change: the single-stepper REPL has been merged
641 with the normal debugger (see the "Stepping" heading of the debugger help
642 for more details). The debugger command STEP will no longer switch
643 to the single-stepper REPL.
644 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
645 for a type now works.
646 * bug fix: loading of default sysinit file works. (thanks to Leonid
648 * bug fix: better detection of circularities in the file-compiler.
649 (reported by Marco Monteiro)
650 * bug fix: the CL pathname functions now work with files that have
651 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
652 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
653 systems with Unix98 pty semantics.
654 * bug fix: ASDF-INSTALL will now work with bsd tar.
655 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
657 * bug fix: timers expiring in dead threads no longer cause a
658 type-error (reported by Paul "Nonny Mouse").
659 * bug fix: thanks to more lightweight single-stepper instrumentation,
660 code compiled with (DEBUG 3) will compile and execute significantly faster,
661 and will have more accurate type-inferencing than before
662 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
663 whose bindings are modified
664 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
665 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
666 ** replace dummy implementations of CL:MACHINE-INSTANCE and
667 CL:SOFTWARE-VERSION with proper version
669 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
670 * feature: implemented the READER-METHOD-CLASS and
671 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
672 as specified by AMOP.
673 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
675 * optimization: faster LOGCOUNT implementation on x86 and x86-64
676 (thanks to Lutz Euler)
677 * optimization: hashing of general arrays and vectors has been
678 improved. (reported by Any Fingerhut)
679 * enhancement: SB-INTROSPECT is now able to find definitions of
680 profiled functions. (thanks to Troels Henriksen)
681 * enhancement: compiler-macro expansion applies now to FUNCALL forms
682 as well, allowing compiler-macros for SETF-functions to expand.
683 * enhancement: step-instrumentation no longer wraps known
684 single-value functions with multiple-value context, allowing
685 better type inference.
686 * fixed bug #337: use of MAKE-METHOD in method combination now works
687 even in the presence of user-defined method classes. (reported by
688 Bruno Haible and Pascal Costanza)
689 * fixed bug #339(c): if there are applicable methods not part of any
690 long-form method-combination group, call INVALID-METHOD-ERROR.
691 (reported by Bruno Haible)
692 * fixed bug #361: the :FUNCTION initarg in the protocol for
693 initialization of methods can now be used to override
694 internally-produced optimized functions. (reported by Bruno
696 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
697 system-provided lambda expression no longer cause warnings about
698 unbound #:|pv-table| symbols.
699 * bug fix: improved the handling of type declarations and the
700 detection of violations for keyword arguments with non-constant
702 * bug fix: potentially erronous calls to PATHNAME and
703 MERGE-PATHNAMES were being flushed in some cases.
704 (reported by Richard Kreuter)
705 * bug fix: compiled calls to TYPEP were mishandling obsolete
706 instances. (reported by James Bielman and Attila Lendvai)
707 * bug fix: format strings with ~> without matching ~< no longer
708 trigger an AVER, but signal an understandable error instead.
709 (reported by Antonio Martinez)
710 * bug fix: specifying an output-file without a pathname-type for
711 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
712 of input-file instead of "fasl". (reported by Robert Dodier)
713 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
714 (reported by James Y Knight).
715 * bug fix: compiler-macros-function did not consider the environment
716 argument for shadowing by local functions.
717 * bug fix: compiler-macros expansion was inhibited by local INLINE
719 * bug fix: inline expansions of known functions were subject to
720 step-instrumentation in high debug policies, leading to problems
722 * bug fix: compiler failed to differentiate between different CONS
724 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
725 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
726 * bug fix: #368: incorrect use of expressed vs. upgraded array
728 * bug fix: #306a: more precise unions of array types.
729 * thread-safety improvements:
730 ** CONDITION-WAIT could return early on Linux, if the thread was
731 interrupted and subsequently continued with SIGCONT.
732 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
734 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
735 * added support for the ucs-2 external format. (contributed by Ivan
737 * minor incompatible change: pretty printing of objects of type
738 (cons symbol) is, in the default pprint-dispatch-table, now
739 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
741 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
742 called later in a class's lifetime, possibly as late as when the
743 first instance of the class is created. Previously,
744 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
745 class became finalizeable.
746 * fixed bug: FILE-POSITION sometimes returned inconsistent results
747 for multibyte external-format streams. (thanks to "vbzoli")
748 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
749 with :ALLOCATION :CLASS inherited from superclasses of the
751 * fixed bug: anonymous classes can now be created using the :NAME
752 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
753 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
754 * fixed bug: core-files saved with :EXECUTABLE T can again be
755 executed when SBCL_HOME isn't set. (reported by James Knight)
756 * fixed bug: toplevel LOCALLY forms with declarations could
757 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
758 * fixed bug: printing from several different threads using different
759 values of *print-case* could cause invalid output, due to
760 some internal special variables of the printer not being bound
761 thread-locally (reported by Max Mikhanosha)
762 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
763 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
764 (reported by Pascal Costanza)
765 * fixed bug: FINALIZE-INHERITANCE is called from
766 REINITIALIZE-INSTANCE on classes when the class has previously
767 been finalized, as required by AMOP.
768 * minor code generation optimizations:
769 ** better register allocation in CLOS dispatching functions
770 ** overflow detection when coercing signed bytes to fixnums on x86-64
771 ** is now implemented with one IMUL instruction instead of three shifts
772 ** more efficient bit-vector access on x86 and x86-64
773 ** more efficient access to raw structure slots on x86 and x86-64
774 * fixed some bugs revealed by Paul Dietz' test suite:
775 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
778 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
779 * feature: thread support on Solaris/x86, and experimental thread support
781 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
783 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
784 default method for SLOT-UNBOUND.
785 * minor incompatible change: prevent the user from specializing the
786 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
787 somewhat counter to the intent of the protocol, I (CSR) think, and
788 additionally it just doesn't work in SBCL as currently
789 implemented, thanks to optimizations (that are always valid for
790 the other three SLOT-VALUEish functions, but not for the setter).
791 * minor incompatible change: the :SB-LDB feature is now enabled by
792 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
793 the low-level debugger.
794 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
795 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
796 down to an SB-SYS:FD-STREAM, allowing direct communication in
797 more cases. Temporary files and pipes are still used as a fallback
799 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
800 on the non-reentrant C functions localtime(3) and gmtime(3).
801 * bug fix: global optimization policy was not visible in LOCALLY and
803 * bug fix: class objects can be used as specializers in methods.
804 (reported by Pascal Costanza)
805 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
806 with a type error. (reported by blitz_ on #lisp)
807 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
808 failed with a type error. (reported by Pascal Bourguignon)
809 * bug fix: merging pathnames against defaults with :DIRECTORY
810 starting with '(:RELATIVE :BACK) should preserve the :BACK.
811 (reported by James Y Knight)
812 * bug fix: saving large (>2GB) cores on x86-64 now works
813 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
814 constant index and a (simple-array (signed-byte 32)) array
815 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
816 error (patch by Robert J. Macomber)
817 * feature: TIME now displays the amount of run-time spent in GC
818 * bug fix: The debugger now does a better job of respecting
819 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
820 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
821 workaround for bug 403.)
822 * bug fix: floating point exception handling now works on FreeBSD
823 (thanks to NIIMI Satoshi)
824 * fixed some bugs revealed by Paul Dietz' test suite:
825 ** MISC.641: LET-conversion were not supposed to work in late
827 * improvements to the Win32/x86 port:
828 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
829 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
831 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
832 * new feature: source path information is generated for macro-expansion
833 errors for use in IDE's like Slime (thanks to Helmut Eller)
834 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
835 * bug fix: compiler does not loop forever on an invalid type in
837 * improvement: compilation of most CLOS applications is significantly
839 * optimization: added a limited bytecode compiler for simple toplevel
840 forms, speeding up compilation and FASL loading
841 * bug fix: the statistical profiler now properly distinguishes anonymous
844 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
845 * minor incompatible change: in sbcl-0.9.11 (but not earlier
846 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
847 into subclasses of the finalized class. Now user calls to
848 FINALIZE-INHERITANCE finalize just the one class, and calls by the
849 system return before any subclasses are finalized.
850 * minor incompatible change: The reader no longer ignores errors
851 regarding non-existent packages in #+ and #- feature tests.
852 * new feature: command line options --no-sysinit, --no-userinit to
853 inhibit loading the corresponding init files
854 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
855 for sending data through UDP sockets (thanks to François-René Rideau)
856 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
857 error is signalled instead (thanks to François-René Rideau)
858 * minor incompatible change: Error signalling behaviour of lexical
859 operations violating package locks has changed slightly. Refer to
860 documentation on package locks for details.
861 * enhancement: EVAL can process IF-expressions without resorting to the
863 * bug fix: Some operations involving SIN, COS, or TAN weren't being
864 constant-folded properly due to missing out-of-line functions.
865 (reported by Mika Pihlajamäki)
866 * bug fix: LISTEN sometimes returned T even in cases where no data was
867 immediately available from the stream
868 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
869 were reversed. (reported by Levente Mészáros)
870 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
871 when given a vector displaced to an adjustable array. (reported
873 * bug fix: derivation of float boundaries from numbers outside the
874 appropriate float range (reported by John Wiseman)
875 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
877 * bug fix: precomputing cache entries for generic functions with
878 some subclasses of specializers as yet invalid does not attempt to
879 fill a cache line with a negative offset. (reported by Levente
881 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
882 allow condition class objects as arguments to DOCUMENTATION and
883 (SETF DOCUMENTATION); only find and set documentation for
884 structure names for the STRUCTURE doc-type. (suggested by Gary
886 * improvements to the Win32/x86 port:
887 ** (user-homedir-pathname) and default initialization file
888 locations now know about the user's "Documents and Settings"
889 directory (thanks to Yaroslav Kavenchuk)
890 ** run-program is implemented (thanks to Mike Thomas)
891 ** sockets support (thanks to Timothy Ritchey)
892 ** better backtrace support (thanks to Alastair Bridgewater)
893 ** sb-grovel supported
894 ** asdf-install and sb-posix work somewhat
895 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
896 * improvements to the Solaris/x86 port:
897 ** works on Solaris 11/Solaris Express
898 ** floating-point exception handling support
899 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
900 * fixed some bugs revealed by Paul Dietz' test suite:
901 ** REMOVE-METHOD returns its generic function argument even when
902 the method is not one of the generic functions' methods.
903 ** objects declared as MEMBER types can be admissible arguments to
905 ** printing characters should simply be printed by the FORMAT ~:C
907 ** compiler failure when compiling functions with hairy constant
908 defaults for optional parameters.
909 ** compiler produces wrong code when MAYBE-INLINE-expanding a
910 function, which is already optimized.
912 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
913 * new platform: experimental support for SBCL x86/Darwin, including
914 MacOS X 10.4.5 on Intel.
915 * new feature: Unicode character names are now known to the system
916 (through CHAR-NAME and NAME-CHAR).
917 * new feature: the filesystem location of SBCL's core file is
918 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
919 * minor incompatible change: the contrib modules SB-POSIX and
920 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
921 this change is to make it easier to distribute
922 location-independent binaries.
923 * bug fix: as implied by AMOP, standardized classes no longer have
924 slots named by external symbols of public packages. (reported by
926 * optimization: calling functions via constant symbols -- as in
927 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
928 via the function object as in (FUNCALL #'FOO).
929 * optimization: on x86 and x86-64, the calling convention for the
930 case of dealing with an unknown number of values has been altered
931 to be friendlier to the prediction heuristics implemented,
932 particularly with reference to CALL and RET pairing. (thanks to
933 Alastair Bridgewater)
934 * optimization: on x86, the code for access to thread-local symbol
935 values and binding/unbinding of thread-local symbols is smaller.
936 (thanks to Alastair Bridgewater)
937 * enhancement: CONSTANTP is now able to determine constantness of
938 more complex forms, including calls to constant-foldable standardized
939 functions and some special forms beyond QUOTE.
940 * fixed bug: occasional GC crashes on Solaris/x86
941 * optimization: x86-64 supports stack allocation of results of simple
942 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
943 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
944 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
945 (thanks to James Knight)
946 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
947 by the standard (thanks to Stephen Compall)
949 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
950 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
951 be used for bundling the runtime and the core file into one
952 executable binary. This feature is not currently supported on all SBCL
953 platforms. (thanks to James Bielman and NIIMI Satoshi)
954 * new feature: a generational or ephemeral garbage collector is now
955 the default on the PowerPC platform (both Linux and Darwin). The
956 old Cheney (stop and copy) collector is a build-time option.
957 (thanks to Cyrus Harmon, after Raymond Toy)
958 * minor incompatible change: the method by which SBCL finds its
959 contributed modules has changed; it no longer relies on symbolic
960 links from an $SBCL_HOME/systems directory, but searches directly
961 in the subdirectories of $SBCL_HOME.
962 * enhancement: the dynamic heap size on the Linux/PPC platform is
963 markedly larger, even using the older Cheney garbage collector.
964 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
965 certain complicated string types. (reported by Gary King)
966 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
967 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
968 * fixed bug: DOCUMENTATION on structures no longer signals an
969 error if no structure type of the right name exists. (reported by
971 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
972 applicable non-standard primary or :AROUND method on
973 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
974 no longer cause unbound variable errors. (reported by Kevin Reid)
975 * fixed bug: metacircle resolution in cases where methods have slots
976 added before the slots from STANDARD-METHOD. (reported by Jean
978 * fixed bug: the Power PC assembly code for calling into lisp
979 sometimes computed its return address wrongly (depending on the
980 15th bit of the address, fixed at link time). This used to
981 manifest itself in a segmentation violation while building PCL.
982 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
983 many others over the years)
984 * fixed bug: ROOM no longer reports silly numbers for stack usage if
985 the stack pointer (treated as a signed integer) is negative.
986 (thanks to Peter van Eynde)
988 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
989 * new platform: experimental support for the Windows operating
990 system has been added. (thanks to Alastair Bridgewater)
991 * fixed several bugs in and robustified the PPC FFI (including
992 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
993 * bug fix: allow non-simple string symbol names (reported by Paul
995 * bug fix: interrupt handling on NetBSD (thanks to Richard M
997 * bug fix: saving a core corrupted callbacks on x86/x86-64
998 * bug fix: closed a loophole in metacircularity detection and
999 grounding in the PCL implementation of CLOS.
1000 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1001 (reported by tomppa on #lisp)
1002 * bug fix: clear the direction flag on Lisp -> C transitions, as
1003 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1004 (reported by Andrej Grozin and Hendrik Maryns)
1005 * optimization: major improvements to GC efficiency on GENCGC platforms
1006 * optimization: faster implementation of EQUAL
1007 * optimization: emit more efficient opcodes for some common
1008 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1009 * optimization: several other minor code-generation improvements on x86-64
1010 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1012 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1013 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1014 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1015 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1016 by ANSI as a generic function, and for consistency (SETF
1017 GENERIC-FUNCTION-NAME) is treated likewise.
1018 * fixed bug #233.b: make constraint propagation notice when a variable
1019 value is changed after it is referenced but before it is used
1020 * fixed bug #296: no more arbitrary behaviour from filenames with
1021 odd characters as --load arguments. (reported by Adam Warner)
1022 * fixed bug #390: :CHARACTER-SET pathname components now work as
1023 expected. (reported by Tim Daly Jr)
1024 * fixed bug #391: complicated :TYPE intersections in slot
1025 definitions no longer cause an error in PCL internals.
1026 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1027 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1028 returning the number of octets which would be written to the
1029 file-stream. (thanks to Robert J. Macomber)
1030 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1031 arguments to the internal stream functions. (thanks to David
1033 * bug fix: stack exhaustion is now handled on the x86/SunOS
1034 platform. (thanks to Daisuke Homma)
1035 * bug fix: more accurate ROOM results on GENCGC platforms
1036 * optimization: improved type inference for arithmetic-for
1037 index variables in LOOP
1038 * optimization: faster floating-point SQRT on x86-64
1039 * fixed some bugs revealed by Paul Dietz' test suite:
1040 ** DOCUMENTATION returns NIL instead of "" for method combinations
1041 that don't have a docstring
1043 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1044 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1045 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1046 therefore are not customizeable by user code (as seems to be at
1047 least permitted and maybe required by AMOP). As a consolation,
1048 however, the SBCL implementation of these functions now calls
1049 REINITIALIZE-INSTANCE as specified by AMOP.
1050 * bug fix: slot-definition documentation is propagated as per ANSI
1051 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1052 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1053 argument, as do eslotd initialization methods. (from Pascal
1054 Costanza's "Closer" project)
1055 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1056 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1058 * bug fix: it is now possible to have more than one subclass of
1059 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1060 (reported by Bruno Haible, Pascal Costanza and others)
1061 * bug fix: the dependent update protocol now works for generic
1062 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1063 and Pascal Costanza)
1064 * bug fix: condition-class instances corresponding to
1065 DEFINE-CONDITION forms are now created eagerly. (reported by
1066 Kalle Olavi Niemitalo on comp.lang.lisp)
1067 * bug fix: floating point printing is more accurate in some
1068 circumstances. (thanks to Simon Alexander)
1069 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1070 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1071 * bug fix: callbacks on OS X now preserve stack-alignment.
1072 (thanks to Cyrus Harmon)
1073 * enhancement: the x86-64 disassembler is much better at
1074 disassembling SSE instructions. (thanks to Lutz Euler)
1075 * enhancement: CHECK-TYPE on a variable now allows type-inference
1076 (thanks to Vincent Arkesteijn)
1077 * optimization: improved performance of EUC-JP external format.
1078 (thanks to NIIMI Satoshi)
1079 * optimization: performance improvements to IO on file streams of
1080 :ELEMENT-TYPE CHARACTER
1081 * optimization: much faster memory allocation on x86-64
1082 * optimization: faster garbage collections (latency and throughput)
1084 * optimization: faster bignum subtraction and division on x86 and x86-64
1085 (thanks to Lutz Euler)
1086 * optimization: more accurate type-inference for loops that use a
1087 floating point index variable or a negative step.
1089 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1090 * bug fix: add a workaround to SBCL looping infinitely at startup on
1091 Linux kernels with apparently buggy implementations of personality().
1092 (thanks to Svein Ove Aas)
1093 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1094 (thanks to David Lichteblau)
1095 * bug fix: local bindings shadow global symbol macros for
1096 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1097 * optimization: non-open coded uses of numeric comparison operators
1098 (e.g. >) no longer cons when called with more than one parameter
1099 on platforms supporting dynamic-extent allocation.
1100 * enhancement: saving cores with foreign code loaded is now supported
1101 on MIPS/Linux in addition to the previously supported platforms.
1102 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1103 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1104 * bug fix: division by zero in sb-sprof when no samples were collected
1105 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1106 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1107 (thanks to Alexander Kjeldaas)
1108 * new feature: ignoring the return values of destructive functions
1109 like NREVERSE signals a compile-time style-warning.
1110 (thanks to Kevin Reid)
1111 * new feature: the alignment of alien structure fields can be
1112 explicitly specified. (thanks to Cyrus Harmon)
1113 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1114 and dump core on SIGQUIT
1116 ** incompatible change: threads do not inherit values of specials
1117 from their parents (see manual)
1118 ** bug fix: threads stacks belonging to dead threads are freed by the
1119 next exiting thread, no need to gc to collect thread stacks anymore
1120 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1121 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1122 ** bug fix: dynamic variable and thread start related gc lossage
1123 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1125 * fixed some bugs revealed by Paul Dietz' test suite:
1126 ** SUBTYPEP is slightly more accurate on heinously complicated
1127 CONS types where some of the members have uncertain (in the
1128 NIL, NIL sense) type relationships to each other.
1130 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1131 no longer purified unless :PURIFY T is explicitly specified.
1132 ** Non-purified cores are significantly smaller than before
1134 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1135 * new feature: timers based on Zach Beane's excellent timer package
1136 * added support for the following external formats: koi8-u,
1137 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1138 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1139 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1140 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1141 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1142 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1143 * incompatible change: a threaded SBCL will no longer revert to
1144 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1145 * bug fix: interrupts are disabled until startup is complete; no
1146 more sigsegvs when receiving a signal to soon
1147 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1149 * bug fix: add a workaround for the memory randomization features in
1150 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1151 workaround will only be in effect on systems with the proc filesystem
1153 * bug fix: printing objects of type HASH-TABLE signals a
1154 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1156 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1157 have been running for over 50 days. (reported by Gilbert Baumann)
1158 * bug fix: the logic for getting names of functions gets less
1159 confused when confronded with alternate-metaclass
1160 funcallable-instances. (reported by Cyrus Harmon)
1161 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1162 consistent, even on internal alternate-metaclass objects.
1163 * bug fix: flush closure information collected by physical
1164 environment analysis prepass before the main pass. (bug reported
1166 * bug fix: compiler pack phase does not modify a hashtable, which is
1167 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1168 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1169 may be expanded. (reported by Alexander <malishev> on c.l.l)
1170 * bug fix: no more style-warnings when compiling code using LAST
1171 under high-SPEED low-SPACE settings. (reported by David Wallin
1173 * fixed some incompatibilities between SBCL's MOP and the MOP
1175 ** the METAOBJECT class is now implemented;
1176 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1177 STANDARD-OBJECT, as required;
1178 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1179 now compatible (as required by VALIDATE-SUPERCLASS); there
1180 remains a consistency requirement over the presence or absence
1181 of the FUNCTION class in the superclass list of finalized
1182 classes; see the manual for more details;
1183 ** the :AROUND method for COMPUTE-SLOTS on
1184 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1185 requested slot ordering.
1187 ** bug fix: parent thread now can be gc'ed even with a live
1189 ** bug fix: binding a special with PROGV to no value is not
1190 the same as that symbol not having been bound (thanks to
1192 ** bug fix: binding specials is thread safe (thanks to
1194 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1195 and SB-SPROF do not die with 'no handler for signal XX in
1196 interrupt_handle_now(..)' anymore
1197 ** bug fix: WITH-TIMEOUT works with multiple running threads
1198 * fixed some bugs revealed by Paul Dietz' test suite:
1199 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1200 the :method-class keyword argument.
1202 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1203 * new port: the Solaris operating system on x86 processors is now
1204 mostly supported, though some rough edges in the environment
1205 remain. (thanks to Daisuke Homma)
1206 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1207 space for its heap. (thanks to Thiemo Seufer)
1208 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1209 closures. (thanks to Thiemo Seufer)
1210 * minor incompatible change: eof selects abort in the debugger.
1211 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1212 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1214 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1215 deprecated, and will go away in a future revision of SBCL.
1216 * minor incompatible change: GC-ON and GC-OFF are no longer
1217 implemented with a counter, it does not matter how many times gc
1218 is switched on or off
1219 * bug fix: discriminating functions for generic function classes
1220 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1221 make invalid assumptions about method precedence order. (reported
1223 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1224 platforms. (thanks to Thiemo Seufer)
1225 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1226 * bug fix: correct pathname printing with printer escaping is on.
1227 (thanks to Kevin Reid)
1228 * bug fix: complex VOP definitions in "user-space" no longer trigger
1229 package locks. (reported by Zach Beane)
1230 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1231 for funcallable-instance functions, and is no different from
1233 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1234 characters in the current readtable. (reported by Nicholas Neuss)
1235 * bug fix: SUBTYPEP on various CONS types returns more a more
1236 accurate acknowledgment of its certainty.
1237 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1238 lists in some cases. This partially fixes bug 384.
1239 * flush all standard streams before prompting in the REPL and the
1241 * bug fix: signal handling and triggering gc do not conflict
1242 directly anymore, in particular a high frequency sb-sprof does
1243 not prevent gc from running
1244 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1245 approximation for timezone and DST information between the
1246 universal time epoch and the smallest negative 32-bit time_t.
1247 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1248 year 1899 so long as the encoded time is non-negative.
1249 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1250 the correct answer for non-constant rotate amounts when performing
1251 an inline 32-bit rotation.
1253 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1254 there is only one thread in the session
1255 ** bug fix: memory leak for streams created in one thread and
1256 written to in another
1257 ** bug fix: lockup when compiled with gcc4
1258 ** bug fix: race that allows the gc to be triggered when gc is
1260 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1261 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1263 ** bug fix: finished threads are gc'ed properly
1264 * fixed some bugs revealed by Paul Dietz' test suite:
1265 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1266 has arguments with a different set of applicable methods from
1267 the orignal arguments.
1268 ** The type error thrown by MAP now has a correct expected-type
1270 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1271 name a compiled function.
1272 ** Three MISC tests where a large bignum was improperly coerced to
1273 a float that couldn't represent that bignum during type
1274 derivation were fixed.
1275 ** SUBTYPEP can now handle types involving the negation of a
1276 list-form FUNCTION type.
1277 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1278 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1279 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1281 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1282 * New feature: Experimental support for bivalent streams: streams
1283 opened with :element-type :default now allow character and binary
1284 (unsigned-byte 8) I/O
1285 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1286 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1288 * bug fix: no more highly sporadic "couldn't check whether ~S is
1289 readable" when reading a stream and an interrupt hits in the middle
1290 of a select system call
1291 * compiler better recognizes complex arrays (reported by Eduardo
1293 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1294 for variables on SBCL built with linkage-tables. (reported by Luis
1296 * various error reporting improvements.
1297 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1298 (Thanks to Thiemo Seufer)
1299 * bug fix: nested reader invokations work correctly
1300 * bug fix: it is possible to have simultaneous references to foreign
1301 code and foreign data with the same name.
1303 ** added x86-64 support
1304 ** incompatible change: the threading api now works with thread
1305 objects instead of thread ids
1306 ** bug fix: threads are protected from signals and interruption when
1307 starting up or going down
1308 ** bug fix: a race where an exiting thread could lose its stack to gc
1309 ** bug fix: don't halt on infinite error in threads if possible
1310 ** fixed numerous gc deadlocks introduced in the pthread merge
1311 ** bug fix: fixed thread safety issues in read and print
1312 ** bug fix: debugger doesn't hang on session lock if interrupted at
1313 an inappropriate moment
1314 ** bug fix: run-program is now thread safe(r)
1315 ** bug fix: inner with-recursive-lock no longer releases the mutex
1316 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1317 * fixed some bugs revealed by Paul Dietz' test suite:
1318 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1319 EXPECTED-TYPE slots filled.
1320 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1322 ** MAKE-CONDITION accepts classes as type-designators.
1323 ** COMPILE may never return NIL.
1324 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1325 range before calling Unix time functions
1327 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1328 * numerous signal handling fixes to increase stability
1329 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1330 * minor incompatible change: we now correctly canonize default
1331 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1332 as per the MOP, rather than the historical (INITARG INITFUNCTION
1333 INITFORM). (reported by Bruno Haible)
1334 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1335 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1336 for more information.
1337 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1338 pathname is a directory pathname.
1339 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1340 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1342 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1343 :METACLASS argument in addition to a class name. (reported by
1344 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1345 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1346 (reported by Bruno Haible; patch from Gerd Moellmann)
1347 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1349 * bug fix: more cleanups to the floating point exception handling on
1350 x86-64 (thanks to James Knight)
1351 * bug fix: the compiler does not try to constant fold calls of
1352 COERCE and BIT-* functions when they return freshly constructed
1353 objects. (reported by Nikodemus Siivola and Paul Dietz)
1354 * optimization: improved the MIPS versions of generic (in the
1355 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1356 * optimization: direct conversion of (unsigned-byte 32) to floats on
1357 the PowerPC platform.
1358 * optimization: structure instances with raw slots now use less
1359 memory, and probably show better memory locality. (thanks to
1361 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1362 are treated as requests for stack allocation on the x86-64,
1363 Alpha-32, PPC and SPARC platforms.
1364 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1365 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1366 (thanks to Tony Martinez)
1368 ** gcing a dead thread can no longer lead to lockups
1369 ** threads block signals until they are set up properly
1370 ** errno is no longer shared by threads
1371 ** interrupt-thread restores the eflags register on x86
1372 ** fixed some lockups due to gc/thread interaction
1373 * fixed some bugs revealed by Paul Dietz' test suite:
1374 ** invalid dotted lists no longer raise a read error when
1375 *READ-SUPPRESS* is T
1376 ** signal an error if a symbol that names a declaration is used
1377 as the name of a type, or vice versa
1378 ** allow using the (declare (typespec var*)) abbreviation for
1379 (declare (type typespec var*)) with all type specifiers
1380 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1381 ** always return NIL from PPRINT-POP when OBJECT is NIL
1382 ** don't signal errors when pretty-printing malformed LABELS,
1383 FLET or MACROLET forms
1384 ** declarations in a DOLIST body are also in scope for the
1386 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1388 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1391 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1392 * fixed cross-compiler leakages that prevented building a 32-bit
1393 target with a 64-bit host compiler.
1394 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1395 opened with :IF-EXISTS :OVERWRITE.
1396 * fixed bug 281: error for an invalid qualifier in a short-form method
1397 combination method is not signalled until the faulty method is called.
1398 * bug fix: iteration variable type inferrer failed to deal with open
1399 intervals. (reported by Alan Shields)
1400 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1401 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1402 or more runtime options were provided to the sbcl binary.
1403 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1404 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1405 * optimization: there's now a fast-path for fixnum arguments in the
1406 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1407 * optimization: the code generated on x86-64 is more compact thanks
1408 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1409 * bug fix: floating-point exception handling now partly works on
1410 x86-64. (Thanks to James Knight)
1411 * improvement to the MIPS backend from Thiemo Seufer: C-style
1412 64-bit long long arguments and return values to alien functions
1414 * fixed some bugs revealed by Paul Dietz' test suite:
1415 ** the type-error signalled from WARN has a filled-in DATUM slot.
1416 ** the type-error required when a stream is not associated with
1417 a file has the stream as its datum.
1418 ** type-errors on single-floats on x86-64 no longer have
1419 :INVALID-OBJECT as the datum
1420 ** the type-errors signalled for invalid function names now have
1421 a correct expected type
1422 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1423 for structures defined with a :TYPE. Documentation strings for
1424 typed structures are no longer immediately discarded
1425 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1426 broadcast streams and synonym streams. FILE-LENGTH now also works
1427 on broadcast streams.
1429 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1430 * incompatible change: the --noprogrammer option, deprecated since
1431 version 0.7.5, has been removed. Please use the equivalent
1432 --disable-debugger option instead.
1433 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1435 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1436 inoperational for a while now) has been completely removed.
1437 * null lexical environments are now printed as #<NULL-LEXENV>,
1438 significantly reducing the amount of clutter in typical backtraces.
1439 * documentation on weak pointers, finalization, and after GC hooks
1440 has been added to the manual.
1441 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1442 as other specialized array types, is much faster. SUBSEQ and
1443 COPY-SEQ on such arrays have also been sped up.
1444 * optimization: EQL is now more efficient when at least other argument
1445 is known to be of type (OR FIXNUM (NOT NUMBER)).
1446 * fixed bug: the runtime is now less vulnerable to changes in the
1447 size of the SBCL object on OS X, and virtual memory is reserved for
1448 all spaces that need to be at a fixed address.
1449 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1450 * fixed bug: finalizers and after GC hooks that cause consing are now
1452 * fixed bug: compiler error messages and summaries are now printed to
1453 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1454 * fixed inference of the upper bound of an iteration variable.
1455 (reported by Rajat Datta).
1456 * fixed bug 211e: calling local functions with duplicated constant
1457 keyword argument no longer causes a bogus style warning about an
1459 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1460 ftype declaration to be disregarded. (reported by Dave Roberts)
1461 * fixed bug 373: caused by erronous compilation of references to alien
1462 variables in the runtime on ppc/darwin.
1463 * fixed bug 376: CONJUGATE type deriver.
1464 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1465 (reported by Baughn on #lisp)
1466 * a cross-compiler bug on non-x86 platforms has been identified and
1467 fixed. (thanks to Bruno Haible)
1468 * improvements to the MIPS runtime code for increased stability.
1469 (thanks to Thiemo Seufer)
1470 * increased the maximimum compact environment size to allow
1471 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1472 * partial workaround for bug 135: don't name the function we're
1473 calling for hairy cases of EVAL, so as not to accumulate one environment
1474 entry per call to EVAL. (reported by Kevin Reid)
1475 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1476 * optimization: type testing for non-vector arrays should be faster.
1477 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1479 * bug fix: setting 31st element of a bit vector to zero did not work
1481 * bug fix: redefining a class definition which failed due to a
1482 previous accessor / function clash now works (but see BUGS entry
1483 #380 for more problems in this area). (thanks to Zach Beane)
1484 * the long form of DEFINE-METHOD-COMBINATION disables method group
1485 checking when given a single method group with pattern *. (thanks
1487 * on x86 compiler supports stack allocation of results of simple
1488 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1489 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1490 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1491 * fixed some bugs related to Unicode integration:
1492 ** the restarts for recovering from input and output encoding
1493 errors only appear when there is in fact such an error to
1495 * fixed some bugs revealed by Paul Dietz' test suite:
1496 ** MISC.549 and similar: late transformation of unsafe type
1497 assertions into derived types caused unexpected code
1499 ** SCALE-FLOAT type deriver is less wrong.
1500 ** type derivers for EXP, LOG and similar functions compute result
1501 types for complex arguments better.
1502 ** (MISC.563) CONJUGATE type deriver works for very restricted
1504 ** out-of-line type testers for character strings are available.
1505 ** EQUAL compiler transform understands specialness of objects
1507 ** accessing double-floats stored on the stack now works on x86-64.
1508 ** debugger internals could sometimes create invalid lispobjs,
1509 resulting in GC crashes.
1510 ** MISC.548: type check weakening can convert required type into
1512 ** initialization forms for bindings are not in scope of free special
1515 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1516 * incompatible change: thread support for non-NPTL systems has
1517 been removed - locking is buggy and unreliable. A threaded
1518 SBCL build will now warn at startup and refuse to create
1519 new threads, unless futex support is detected in the kernel
1520 * incompatible change: the top level REPL now has only an ABORT
1521 restart associated with it, not TOPLEVEL and ABORT as it used to.
1522 TOP and TOPLEVEL are now available as debugger commands for
1523 returning to the top level.
1524 * incompatible change: forms evaluated in the REPL now use the
1525 global optimization policy.
1526 * incompatible change: user- and system-initialization files are
1527 no longer processed with LOAD, but by READ and EVAL; hence the
1528 global optimization policy, startup package, readtable, etc,
1530 * The .fasl file format number has been incremented because of
1531 various incompatible changes.
1532 * internal entry point details and argument counts no longer appear
1533 in backtraces unless explicitly requested by setting
1534 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1535 * built-in and standard functions no longer have names like "top
1536 level local call to FOO".
1537 * fixed bug 32: functions defined in non-null lexical environments
1538 now have more legible printed representation
1539 * fixed bug 33: functions defined in non-null lexical environemnts
1540 are now more amenable to inspection by INSPECT.
1541 * workaround for bug 354: XEPs no longer appear in backtraces unless
1542 explicitly requested.
1543 * fixed bug: receiving the signal which results from attempting to
1544 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1545 SIGBUS on other *BSDs) on architectures where the C stack is also
1546 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1547 to debugger confusion or wild instability. (reported by Cheuksan
1549 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1550 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1551 (reported by Lutz Euler)
1552 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1553 compiled code. (reported by Paul Dietz)
1554 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1555 specialized parameter to a method to something that is not TYPEP
1556 the specializer is now possible.
1557 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1558 face of package deletion.
1559 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1560 pathname. (reported by David Tolpin on c.l.l)
1561 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1562 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1563 STRING-STREAM and FILE-STREAM, respectively.
1564 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1565 than previously; in addition, its test suite is now run on build.
1566 (thanks to Luke Gorrie)
1567 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1568 * optimization: added a immediate representation for single-floats
1570 * fixed some bugs revealed by Paul Dietz' test suite:
1571 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1572 ** attempting to create a package with a colliding nickname causes
1573 correctable errors to be signalled.
1574 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1575 ** several x86-64 backend bugs related to sign-extension of immediate
1578 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1579 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1580 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1582 * fixed loading of multiply forward-referenced layouts.
1583 (thanks to Cheuksan Wang)
1584 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1585 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1586 (see COMPILE-FILE documentation for details of :PRINT option)
1587 * fixed bugs 19 and 317: fixed-format floating point printing is
1588 more accurate. This also fixes a bug reported by Adam Warner
1589 related to the ~@F format directive.
1590 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1592 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1593 dispatch table if the from-char is a dispatch macro character.
1594 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1595 by the wordsize no longer ignore the last word. (reported by Lutz
1597 * fixed bug in type checking of dynamic-extent variables. (reported
1599 * optimization: sequence traversal functions use their freedom to
1600 coerce function designators to functions.
1601 * optimization: code with many calls to CLOS methods specialized on
1602 CLOS classes has had redundant type checks removed.
1603 * optimization: added declarations to speed up operations that access
1604 the internal character database (for example STRING-UPCASE)
1605 * optimization: comparison operations between floats and sufficiently small
1606 fixnums no longer create extra rationals
1607 * fixed some bugs related to Unicode integration:
1608 ** portions of multibyte characters at the end of buffers for
1609 character-based file input are correctly transferred to the
1610 start of the buffer at the next read.
1611 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1612 passing it through to OPEN.
1613 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1614 argument given to internal calls to OPEN.
1615 ** the built-in comment readers (introduced by character sequences
1616 ";" and "#|") are more forgiving to encoding errors; they will
1617 STYLE-WARN and then attempt to resync the stream at a character
1618 boundary. (thanks to Teemu Kalvas)
1619 * fixed some bugs in the x86-64 port:
1620 ** Negative short int return values from c-calls are sign-extended
1622 ** The stack is aligned to 16-bytes for c-calls, as required by
1623 the ABI. (thanks to Cheuksan Wang)
1624 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1625 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1626 for enums. (thanks to Vincent Arkesteijn)
1627 ** Multiple small optimizations and bugfixes for floating point
1629 * fixed some bugs revealed by Paul Dietz' test suite:
1630 ** Space, Tab, Linefeed, Return and Page have the invalid
1631 secondary constituent character trait.
1632 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1634 ** WITH-INPUT-FROM-STRING should only update the index place on
1636 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1637 works more reliably.
1638 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1639 with one-dimensional arrays with fill pointers.
1640 ** TYPE-OF failed on a complex with an integer realpart and a
1642 ** compiler failure during type inference for the code of form
1643 (IF (EQL X (THE ...)) ...) (MISC.535).
1645 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1646 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1647 platform. The port supports 61-bit fixnums, large memory spaces
1648 and reloading shared object files.
1649 * enhancement: saving cores with foreign code loaded is now
1650 supported on ppc/Darwin in addition to the previously supported
1652 * enhancement: the statistical profiler now walks deeper into the
1653 call stack for more meaningful call-graphs and accrued time
1654 reports (x86/x86-64 only). It also now reports time spent in
1656 * enhancement: it is now possible to trace most individual methods
1657 of a generic function in addition to tracing the generic function
1659 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1661 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1662 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1663 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1664 produces an error. (thanks to Vincent Arkesteijn)
1665 * bug fix: NAMESTRING on pathnames with :WILD components in their
1666 directories works correctly. (thanks to Artem V. Andreev)
1667 * fixed bug 125: compiler preserves identity of closures. (reported
1669 * bug fixed: functions with &REST arguments sometimes failed with
1670 "Undefined function" when compiled with (DEBUG 3). (reported by
1672 * bug fix: overflow during compiling of setting element of a bit
1673 vector with constant index and value. (reported by Timmy Douglas)
1674 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1675 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1676 * on x86 compiler partially supports stack allocation of dynamic-extent
1678 * GO and RETURN-FROM do not check the extent of their exit points
1679 when compiled with SAFETY 0.
1680 * fixed some bugs related to Unicode integration:
1681 ** encoding and decoding errors are now much more robustly
1682 handled; it should now be possible to recover even from invalid
1683 input or output to the terminal. (thanks to Teemu Kalvas)
1684 ** provided a first cut at implementing STRING-TO-OCTETS and
1685 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1686 ** altered the SB-MD5 contributed module slightly, changing the
1687 interface just enough for it to be supportable for builds where
1688 lisp characters are not eight bits.
1689 * fixed some bugs revealed by Paul Dietz' test suite:
1690 ** the FORMATTER-generated functions for ~V[ conditionals require
1691 the correct number of arguments.
1692 ** READ-FROM-STRING returns the mandated second value when applied
1693 to displaced strings.
1694 ** the #\Rubout and #\Backspace characters are treated as invalid
1695 constituent characters by the tokenizer.
1697 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1698 * new feature: reloading changed shared object files with
1699 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1700 * new feature: references to foreign variables and functions
1701 can now be compiled and loaded before the corresponding shared
1702 object file is loaded, as long as the foreign definitions are
1703 available at runtime.
1704 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1705 supported. (thanks to Dan Debertin)
1706 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1707 just keywords. (thanks to Vincent Arkesteijn)
1708 * fixed bug #331: structure-class instances corresponding to
1709 DEFSTRUCT forms are now created eagerly.
1710 * fixed bug #345: backtraces from calls to undefined functions work
1711 on x86 as well. Related bug #61 is now also partially fixed on x86
1712 (backtraces from throws to unknown catch tags.)
1713 * bug fix: lambda-list parsing is now stricter vrt. order and number
1714 of lambda-list keywords.
1715 * bug fix: as specified by AMOP, an error is signalled if a
1716 class-option appears multiple times in a DEFCLASS form. (reported
1718 * bug fix: RANDOM can be compiled when the compiler derives the type
1719 of its numeric argument as a disjoint set of small integers.
1720 (reported by Paul Dietz)
1721 * bug fix: starting a core saved with shared objects loaded when
1722 those objects are not available no longer causes threaded SBCL to
1723 hang. (reported by Sean Ross)
1724 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1726 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1727 argument, which must always be NIL. (reported by Kalle Niemitalo)
1728 * bug fix: printing 1.0d+23 no longer results in an error.
1729 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1730 * bug fix: structure slot setters preserve evaluation order. (thanks
1732 * fixed some bugs related to Unicode integration:
1733 ** RUN-PROGRAM can allow its child to take input from a Lisp
1734 stream. (reported by Stefan Scholl)
1735 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1736 locales. (reported by Ken Causey)
1737 * fixed some bugs revealed by Paul Dietz' test suite:
1738 ** INCF, DECF and REMF evaluate their place form as specified in
1740 ** FORMATTER expands ~{ ~} iteration directives with V or #
1741 parameters correctly.
1742 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1743 consequent uses no arguments correctly.
1744 ** the system has a partial understanding of the (COMPLEX RATIO)
1746 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1749 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1750 * new feature: a build-time option (controlled by the :SB-UNICODE
1751 keyword feature, enabled by default) for building the system with
1752 support for the entire 21-bit character space defined by the
1754 * new feature: the system now has rudimentary external-format
1755 support; the primary user-visible change at this time is that
1756 characters with the high bit set (such as lower-case-e-acute) will
1757 print correctly to a terminal in a UTF-8 environment.
1758 * minor incompatible change: BASE-CHAR no longer names a class;
1759 however, CHARACTER continues to do so, as required by ANSI.
1760 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1761 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1762 has been moved to the SB-EXT package (temporarily re-exported from
1764 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1765 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1767 * fixed bug #351: better error-handlind and reporting for malformed
1769 * fixed bug #350: bignum-printing is now more memory-efficient,
1770 allowing printing of very large bignums, eg. (expt 2 10000000).
1771 (reported by Bruno Haible)
1772 * fixed bug #302: better primitive-type selection for intersection
1774 * fixed bug #308: non-graphic characters now all have names, as
1775 required. (reported by Bruno Haible)
1776 * bug fix: redefining a class with different superclasses now correctly
1777 removes it from the direct-subclasses of its previous superclasses.
1778 (reported by David Morse)
1779 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1780 new value now works. (reported by Bruno Haible)
1781 * bug fix: correct canonicalization of multiple non-standard slot
1782 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1783 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1784 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1785 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1786 now exists, an signals an error.
1787 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1788 during macroexpansion for non-iteration variables as well. (reported
1789 by Bruno Haible for CMUCL)
1790 * bug fix: Cyclic structures and unprintable objects in compiler
1791 messages no longer cause errors. (reported by Bruno Haible)
1792 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1793 and READ-FROM-STRING all now return a primary value of NIL if
1794 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1795 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1796 (reported by Bruno Haible for CMUCL)
1797 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1798 do not designate a condition. (reported by Bruno Haible for
1800 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1801 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1802 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1803 permitting resolution in favour of any of the conflicting symbols.
1804 (reported by Bruno Haible for CMUCL)
1805 * bug fix: EQUAL compiler optimizations is less aggressive on
1806 strings which can potentially compare true despite having distinct
1807 specialized array element types.
1808 * bug fix: unit enumerations can be defined without dividing by
1809 zero. (thanks to Vincent Arkesteijn)
1810 * FORMAT compile-time argument count checking has been enhanced.
1811 (report from Bruno Haible for CMUCL)
1812 * a partial workaround for the bug 262: the compiler does not try to
1813 inline-expand a local function doing RETURN-FROM from a deleted
1814 BLOCK. (thanks to Peter Denno for the bug report and to David
1815 Wragg for the simple test case)
1816 * fixed some bugs revealed by Paul Dietz' test suite:
1817 ** RENAME-PACKAGE allows all package designators as new package
1819 ** constraint propagation and lambda variable substitution are
1820 more cautious in dealing with partially deleted code.
1821 ** compiler sometimes lost reoptimization passes.
1822 ** CERROR, given a condition as condition designator, passes its
1823 remaining arguments to the continue format control without
1825 ** Case-altering FORMAT directives work correctly on non-ASCII
1827 ** The REAL type specifier handles bounds outside the floating
1828 point ranges without signalling FLOATING-POINT-OVERFLOW.
1829 ** Functions with IR1-transformations can create intercomponent
1830 references to global functions.
1831 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1833 ** FORMAT ~R treats a nil value for its first parameter correctly.
1835 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1836 * enhancement: saving cores with foreign code loaded is now
1837 supported on x86/NetBSD and sparc/Linux in addition to the previously
1838 supported platforms.
1839 * bug fix: on some platforms repeated installations caused multiple
1840 copies of HTML documentation to be installed -- should not happen
1841 any more. (reported by Stefan Scholl)
1842 * bug fix: parsing self-recursive alien record types multiple times
1843 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1844 original patch by Helmut Eller for CMUCL)
1845 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1846 (thanks to Richard Kreuter)
1847 * bug fix: defining classes whose accessors are methods on existing
1848 generic functions in other (locked) packages no longer signals
1849 bogus package lock violations. (reported by François-René Rideau)
1850 * bug fix: special variables as DEFMETHOD parameters no longer have
1851 associated bogus type declarations. (reported by David Wragg and
1853 * bug fix: read-write consistency on streams of element-type
1854 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1855 * bug fix: redefiniton of the only method of a generic function with
1856 no DEFGENERIC no longer emits a full WARNING. In addition,
1857 redefinition of generic functions with no DEFGENERIC to an
1858 incompatible lambda list now signals an error. (thanks to Zach
1860 * bug fix: DEFGENERIC now works even when there's a function of the
1861 same name in an enclosing lexical environment. (thanks to Zach
1863 * fixed compiler failure, caused by instrumenting code during
1864 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1865 * optimization: added loop analysis and improved register allocation
1866 * fixed some bugs revealed by Paul Dietz' test suite:
1867 ** POSITION on displaced vectors with non-zero displacement
1868 returns the right answer.
1869 ** (SIMPLE-STRING) is a valid type specifier for sequence
1871 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1873 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1874 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1876 ** The justification version of the FORMAT ~< directive treats
1877 non-zero minpad parameter correctly.
1879 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1880 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1881 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1882 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1883 the supported interface.
1884 * new feature: Single-stepping of code compiled with DEBUG 2 or
1885 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1886 * new feature: saving cores with foreign code loaded is now
1887 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1888 Timothy Moore's work for CMUCL)
1889 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1890 parameters to * instead of NIL if no initform is supplied.
1891 (reported by Johan Bockgaard)
1892 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1893 correctly when FUNCALL appears as the car of the form. Note:
1894 despite this FUNCALL forms are not currently subject to
1895 compiler-macro expansion. (port of Raymond Toy's fix for the
1896 same from CMUCL, reported by Johan Bockgaard)
1897 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1898 (thanks for Teemu Kalvas)
1899 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1900 case instead of terminating the iteration (thanks for Julian
1901 Squires, Sean Champ and Raymond Toy)
1902 * bug fix: incorrect expansion of defgeneric that caused a style
1903 warning. (thanks for Zach Beane)
1904 * bug fix: slot accessor effective method computation works properly
1905 for classes with multiple non-standard applicable methods on
1906 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1907 * on x86 compiler supports stack allocation of results of LIST and
1908 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1909 CMUCL implementation by Gerd Moellmann)
1910 * fixed some bugs revealed by Paul Dietz' test suite:
1911 ** FORMAT strings with both the ~<~:;~> form of the justification
1912 directive and pretty-printing directives cause an error.
1914 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1915 * incompatible change: the internal functions
1916 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1917 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1918 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1919 instead of the old functions.
1920 * new feature: on platforms where "dladdr" is available foreign
1921 function names now appear in backtraces. (based on Helmut Eller's
1923 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1924 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1926 * documentation: ASDF manual is now distributed with SBCL.
1927 * bug fix: SBCL can now load its contributed modules with REQUIRE
1928 even if the system-provided entries have been removed from
1929 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1931 * bug fix: backtraces involving undefined functions or assembly
1932 routines are more informative. (thanks to Brian Downing)
1933 * bug fix: mutually referent alien structures now work correctly.
1934 (reported by Rick Taube)
1935 * bug fix: structures defined by WITH-ALIEN can be referred to
1936 within other definitions in the same WITH-ALIEN.
1937 * bug fix: division operators (MOD, TRUNCATE and the like) with
1938 constant zero divisors and integer dividends no longer generate
1940 * bug fix: provide default methods for INPUT-STREAM-P and
1941 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1942 * bug fix: improve the detection and resolution of MOP metacycles
1943 (where effective method computation depends on the generic function
1944 having its effective method computed). (reported by Bruno Haible)
1945 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1946 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1947 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1948 * bug fix: pathnames with relative directory components can be
1949 represented relative to default pathnames.
1950 * optimization: in taking the GCD of bignums, reduce the two bignums
1951 to approximately the same size (using Euclid's algorithm) before
1952 applying the more sophisticated binary GCD. (thanks to Juho
1954 * optimization: COUNT on bitvectors now operates word-at-a-time.
1955 * optimization: ASH with a positive, but not necessarily constant,
1956 (leftwards) shift, when in a modular context, is compiled to a
1958 * fixed some bugs revealed by Paul Dietz' test suite:
1959 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1960 if the corresponding argument is NIL.
1961 ** FORMAT directives accepting a minpad parameter treat negative
1963 ** literal commas as character parameters to FORMAT directives are
1965 ** literal spaces directly after ~<Newline> directives within a
1966 format-logical-block (~:< ~@:>) do not induce :FILL-style
1967 conditional newlines.
1968 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1969 as specified: it no longer includes conditional newlines).
1970 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1972 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1973 :PER-LINE-PREFIX argument does not evaluate to a string.
1975 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1976 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1977 the manual for details; for now, package locks can be disabled by
1978 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1979 if no major problems are found then it is likely that they will be
1980 compiled in unconditionally.
1981 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1982 unsupported operators on all platforms. To load a shared library
1983 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1984 object file, link it into a shared library outside of SBCL and
1985 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1987 * bug workaround: ROOM T and the GC were not working together
1988 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1989 reporting facility aren't preserved. That reporting has been
1990 disabled, so now until and unless someone figures out how to make it
1991 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1992 * minor incompatible change: as threatened around sbcl-0.8.0, the
1993 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1994 The symbols are also exported from SB-PCL for backwards
1995 compatibility, but more so than before SB-PCL should be treated as
1996 an implementation-internal package.
1997 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1999 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2000 It is known as of this release not to work on the Alpha, however.
2001 * fixed bug #167: errors signalled due to illegal syntax in method
2002 bodies are now more legible.
2003 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2004 designators and can hence be used with TYPEP.
2005 * fixed bug #333: CHECK-TYPE now ensures that the type error
2006 signalled, if any, has the right object to be accessed by
2007 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2008 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2009 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2011 * fixed bug #334: programmatic addition of slots using specialized
2012 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2013 and :ALLOCATION :CLASS slots.
2014 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2015 float exponents. (rereported by Peter Seibel)
2016 * fixed a bug: #\Space (and other whitespace characters) are no
2017 longer considered to be macro characters in standard syntax by
2018 GET-MACRO-CHARACTER.
2019 * fixed bug: initialization of condition class metaobjects no longer
2020 causes an instance of the condition to be created. (reported by
2022 * fixed bug: it is now possible to have slots such that
2023 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2024 description is neither :INSTANCE nor :CLASS.
2025 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2026 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2027 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2028 non-standard SLOT-DEFINITION-ALLOCATION values.
2029 * fixed bugs: various race conditions handling exiting threads.
2030 CL-PPCRE's thread torture test now passes.
2031 * fixed arguably-a-bug: GC time proportional to number of threads in
2032 system even when most of them are idle
2033 * optimization: improved performance of BIT and SBIT on bit-vectors.
2034 * .fasl file incompatibility: The fasl file version number has
2035 been incremented because of changes associated with package locks.
2037 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2038 * minor incompatible change: the system no longer provides
2039 optimization hints (conditions which are TYPEP
2040 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2041 mode; these hints are still emitted when higher SPEED optimization
2043 * new contrib module: a sampling profiler (profiling by statistical
2044 sampling, rather than by instrumenting functions) is available as
2045 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2046 * the behaviour of the standard function ED is now customizeable by
2047 third parties through a hook variable: see ED's documentation
2048 string for information on the protocol.
2049 * the compiler no longer emits efficiency notes for (FUNCALL X)
2050 when the type of X is uncertain under default optimization
2052 * fixed bug 276: mutating a binding of a specialized parameter to a
2053 method to something that is not TYPEP the specializer is now
2055 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2056 exhibit the required behaviour on the x86 platform. (thanks to
2057 Peter van Eynde, Eric Marsden and Bruno Haible)
2058 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2059 even for difficult arguments. (reported by Peter Graves)
2060 * fixed bug 141a: the backquote printer now descends quoted
2062 * fixed another bug in backquote printing: no more destructive
2063 modification of the form's list structure. (reported by Brian
2065 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2066 move between its address being taken and the call to
2067 interrupt_thread, fixing a crashing race condition.
2068 * the SB-POSIX contrib implementation has been adjusted so that it
2069 no longer exhibits ridiculously poor performance when constructing
2070 instances corresponding to C structs.
2072 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2073 * minor incompatible change: the sb-grovel contrib now treats C
2074 structures as alien (in the sense of SB-ALIEN) objects rather than
2075 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2076 has implications for memory management of client code
2077 (sb-grovel-returned objects must now be manually managed) and for
2078 type safety (alien objects now have full types).
2079 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2080 used to control emission of compiler diagnostics, rather than the
2081 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2082 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2083 quality should be considered deprecated.
2084 * install.sh now installs the user manual as well
2085 * (not quite a new documentable feature, but worth considering in
2086 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2087 beginnings of a semantically meaningful condition hierarchy is
2088 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2090 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2091 designator as the defaults argument.
2092 * fixed bug: Displaced arrays whose displaced-to array has become
2093 too small now cause ARRAY-DIMENSION to signal an error, providing
2094 for safer bounds-checking. (reported by Bruno Haible)
2095 * fixed bug: DEFCLASS slot definitions with identical :READER and
2096 :WRITER names now signal a reasonable error. (reported by Thomas
2098 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2100 * fixed bug: Invalid slot specification errors now print correctly.
2101 (thanks to Zach Beane)
2102 * fixed bug 320: Shared to local slot value transfers in class
2103 redefinitions now happen corrently from superclasses as
2104 well. (reported by Bruno Haible)
2105 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2107 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2108 improper lists correctly. (reported by Bruno Haible)
2109 * fixed bug 313: source-transform for <fun-name> was erroneously
2110 applied to a call of a value of a variable with name <fun-name>.
2111 (reported by Antonio Menezes Leitao)
2112 * fixed bug 307: The obsolete instance protocol ensures that
2113 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2114 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2115 remove dead unknown-values globs from the middle of the stack.
2116 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2117 easier to resume long computations after using *BREAK-ON-SIGNALS*
2118 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2119 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2120 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2121 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2122 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2123 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2125 * fixed a (fairly theoretical) bug in string printing: if
2126 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2127 does not have array-element-type equal to the most general string
2129 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2130 function name. (thanks to Nikodemus Siivola)
2131 * fixed bug: compile-time format string checker failed on
2132 non-closed ~{. (reported by Thomas F Burdick)
2133 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2134 don't warn on legal loop code involving more than one aggregate
2135 boolean. (thanks to Nikodemus Siivola)
2136 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2137 in keyword position to MAKE-PACKAGE was not being reported as
2139 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2140 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2142 * fixed bugs 280 and 312: the checking for multiple definitions in a
2143 file is less likely to become confused by uses of inline
2145 * fixed bug: the #S reader macro performs the keyword coercion
2146 specified for slot names. (reported by Kalle Niemitalo)
2147 * fixed bug: lambda lists may contain symbols whose names start with
2148 & but are not lambda-list-keywords; their occurrence triggers a
2150 * fixed bug 321: define-method-combination argument lambda lists do
2151 not cause invalid code to be generated when &optional or &aux
2152 variables have default values. (reported by Bruno Haible)
2153 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2154 have CLOS classes; this appears also to have fixed reported
2155 instability in stack exhaustion detection.
2156 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2157 MUFFLE-WARNING when no associated restart is present is now
2159 * optimization: rearranged the expansion of various defining macros
2160 so that each expands into only one top-level form in a
2161 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2163 * optimization: used a previously little-used slot in symbols to
2164 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2166 * fixed some bugs revealed by Paul Dietz' test suite:
2167 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2169 ** Fixed an optimization bug related to inheritance of initforms
2170 from local to shared slots.
2171 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2172 ** CAST optimizer forgot to flush argument derived type.
2173 ** print/read consistency on floats is now orders of magnitude
2174 more likely. (thanks also to Bruno Haible for a similar report
2176 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2177 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2178 for objects of type REAL. Make it so.
2179 ** SXHASH is specified (infelicitously) to respect similarity,
2180 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2181 it so. (thanks to Markus Ziegler)
2182 ** on the Alpha, the compiler succeeds in compiling functions
2183 returning a known number of arguments greater than 63.
2184 ** fixed handling of invalid NIL arguments in keyword position
2186 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2188 ** provided a readably-printable representation for RANDOM-STATE
2190 ** ensured that pathnames, where they have a namestring, always
2191 print using #P"..." syntax.
2193 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2194 * Support for the forthcoming 2.0 version of the NetBSD kernel
2195 running on x86 hardware has been added. (thanks to Perry
2196 E. Metzger most immediately, and others for their past work)
2197 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2198 current release version; SBCL's OpenBSD support had been broken
2199 since about the time of OpenBSD's switch to ELF binary format.)
2200 * [placeholder for DX summary]
2201 ** user code with &REST lists declared dynamic-extent, under high
2202 speed or space and low safety and debug optimization policy.
2203 * The manual has been converted to Texinfo format and the debugger
2204 chapter from the cmucl manual has been added.
2205 * A facility has been added to extract documentation strings from
2206 sbcl and store them as Texinfo-formatted snippets for inclusion in
2207 the manual (via Texinfo's @include directive)
2208 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2209 the test case to Dave Roberts)
2210 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2211 pointers. (reported by Sean Ross)
2212 * bug fix: PROFILE output is printed nicely even for large numerical
2213 values. (thanks to Zach Beane)
2214 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2215 greater than 32 handle EOF correctly.
2216 * bug fix: on X86 an immediate argument of the IMUL instruction is
2217 correctly printed in disassembly. (thanks to Lutz Euler)
2218 * bug fix: class slots in redefined classes preserve their old
2219 values. (thanks to Bruno Haible and Nikodemus Siivola)
2220 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2221 succeeds. (reported by Marco Baringer)
2222 * fixed some bugs revealed by Paul Dietz' test suite:
2223 ** READ-SEQUENCE now works on ECHO-STREAMs.
2224 ** RATIONALIZE works more according to its specification. (thanks
2227 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2228 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2229 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2230 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2231 should matter to you only if you rebind the printer control
2232 variables and then find you want different bindings in the
2233 debugger than in the ordinary execution of your program.)
2234 * The runtime build system has been tweaked to support building
2235 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2236 assembler and linker. (thanks to Nikodemus Siivola)
2237 * Unbound, undefined, undeclared variables now trigger full
2238 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2239 more often programmer error than deliberate exploitation of undefined
2241 * optimization: the hash algorithm for strings has changed to one
2242 that is less vulnerable to spurious collisions. (thanks to Juho
2244 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2245 needless bounds checking. (thanks to Juho Snellman)
2246 * optimization: implemented multiplication as a modular
2247 (UNSIGNED-BYTE 32) operation on the PPC backend.
2248 * fixed some bugs revealed by Paul Dietz' test suite:
2249 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2251 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2252 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2253 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2255 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2257 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2259 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2260 their output stream on EOF from read.
2261 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2262 have been read to end-of-file.
2263 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2265 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2266 description of determination of which consecutive characters
2268 ** Printing the "Space" character with escaping on now yields "#\\ ",
2269 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2270 ** Reading floating-point numbers with *READ-BASE* set to a number
2271 less than 10 works correctly.
2272 ** Reading floating-point numbers with *READ-BASE* set to a number
2273 more than 10 works correctly.
2274 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2275 the readtable currently in effect.
2277 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2278 * minor incompatible change: parsing of namestrings on a physical
2279 (Unix) host has changed; numbers after the final #\. in a
2280 namestring are no longer interpreted as a version field. This is
2281 intented to be largely invisible to the user, except that the
2282 meaning of the namestring "*.*.*" has changed: it now refers to a
2283 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2284 should usually be replaced by
2285 (make-pathname :name :wild :type :wild :version :wild)
2286 with the added benefit that this is more likely to be portable.
2287 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2288 option to OPEN now signals an error if the file being opened
2289 exists; this may have an impact on existing code.
2290 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2291 signals received, on the PowerPC platforms (both Linux and
2292 Darwin). (thanks to Pierre Mai for pointing out the location of
2294 * several fixes on OS X: The system now builds and runs cleanly on
2295 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2296 (thanks to Brian Mastenbrook)
2297 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2298 second-resolution: integer multiples of 1/3600 between -24 and 24.
2299 (thanks to Vincent Arkesteijn)
2300 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2301 type when called with 1 argument; PEEK-CHAR checked type of
2302 PEEK-TYPE only after having read first character from a
2303 stream. (reported by Peter Graves)
2304 * bug fix: the garbage collector now has much better locality
2305 behaviour, and in particular no longer treats all memory as being
2306 exhausted when many small objects point to each other in a deeply
2308 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2309 recognized as being TYPEP their class.
2310 * bug fix: the PUSHNEW documentation string has been corrected.
2311 (thanks to Vincent Arkesteijn)
2312 * bug fix: defaulting of the value for the last of an atypically
2313 large number of multiple values being bound was not being
2314 performed correctly on the Alpha or PPC platforms
2315 * optimization: implemented multiplication as a modular
2316 (UNSIGNED-BYTE 32) operation on the x86 backend.
2317 * optimization: SEARCH on simple-base-strings can now be open-coded.
2318 (see also contrib/compiler-extras.lisp for inspiration for
2319 teaching the compiler about the Boyer-Moore algorithm).
2320 * value, returned by MAX (and MIN) called with several EQUALP, but
2321 not EQL, arguments now does not depend on compiler settings.
2322 * fixed some bugs revealed by Paul Dietz' test suite:
2323 ** in stack analysis liveness information is propagated from
2324 non-local entry points.
2325 ** pathwise CAST removing failed when the CAST node did not start
2327 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2328 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2330 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2331 host is already defined.
2332 ** RENAME-FILE works on streams instead of signalling an internal
2334 ** PEEK-CHAR uses the current readtable when determining whether
2335 or not a character is whitespace.
2336 ** MERGE-PATHNAMES handles the case when the pathname does not
2337 specify a name while the default-pathname specifies a version.
2338 ** Pathnames now stand a better chance of respecting print/read
2340 ** Attempting to use standardized file system operators with a
2341 pathname with invalid :DIRECTORY components signals a
2343 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2345 ** DIRECTORY on logical pathnames is more correct.
2346 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2347 signal a TYPE-ERROR if their argument is not a stream.
2348 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2349 designator argument does not designate a stream.
2350 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2351 examining the synonym.
2352 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2354 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2355 element-type larger than ([UN]SIGNED-BYTE 32).
2357 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2358 * When built with the :SB-FUTEX feature, threaded builds now take
2359 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2360 for faster/more reliable mutex and condition variable support.
2361 * Incompatible change (but one you probably shouldn't have been using
2362 anyway): the interface and code for arbitrating between multiple
2363 threads in the same user session has been redesigned.
2364 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2365 error when called without an explicit environment argument.
2366 (thanks to Nikodemus Siivola)
2367 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2368 confused about their position. (thanks to Adam Warner and Gerd
2370 * bug fix: Pretty printing backquoted forms with unquotations in the
2371 argument list position of various code constructs such as LAMBDA
2372 now works correctly. (reported by Paul Dietz)
2373 * bug fix: Pretty printing unquotations no longer loses all
2374 stream position information.
2375 * optimization: performance of string output streams is now less
2376 poor for multiple small sequence writes.
2377 * optimization: performance of CSUBTYPEP in the presence of complex
2378 expressions involving CONS and NOT many times has been improved.
2379 (reported by Paul Dietz)
2380 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2382 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2383 streams for the REPL, for the debugger, and so on. (thanks to
2385 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2386 * fixed some bugs revealed by Paul Dietz' test suite:
2387 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2388 is ignored if it is too small, rather than propagating through
2389 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2390 ** extremely complex negations of CONS types were not being
2391 sufficiently canonicalized, leading to inconsistencies in
2393 ** VALUES tranformer lost derived type.
2395 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2396 * fixed a bootstrapping bug: the build process no longer assumes
2397 that the various BOOLE-related constants have the same value in
2398 host and target lisps. (noted by Paul Dietz' test suite on an
2399 SBCL binary built from CLISP)
2400 * The system can now be dynamically linked on the MIPS platform,
2401 which enables dynamic loading of foreign code from Lisp. (thanks
2402 to Ralf Baechle for discussions on the MIPS ABI)
2403 * The system now records debugging information for its own source
2404 files in a filesystem-position-independent manner, relative to
2405 the "SYS" logical host.
2406 * fixed a compiler bug: MV-LET convertion did not check references
2407 to the "max args" entry point. (reported by Brian Downing)
2408 * tweaked disassembly notes to be less confident about proclaiming
2409 some instruction as an LRA. (thanks to Brian Downing)
2410 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2411 now each have their own history, command character, and other
2412 characteristics. (thanks to David Lichteblau)
2413 * fixed some bugs revealed by Paul Dietz' test suite:
2414 ** compiler failure in compiling LOGAND expressions including a
2416 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2417 shift greater than 32.
2418 ** FLUSH-DEST did not mark blocks for type check regeneration.
2419 ** HANDLER-CASE failed to accept declarations in handler clauses
2420 in some circumstances.
2422 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2423 * New code in contrib/sb-introspect (still probably not entirely
2424 stable yet) provides some support for smart Lisp development
2425 environments like SLIME.
2426 * The conditions signalled for errors occurring when loading .fasl
2427 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2428 in a way which should help ASDF recover gracefully.
2429 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2430 stuff has been cleaned up. If you code contrib/ stuff, this might
2431 affect you, and you can look at contrib/README, contrib/STANDARDS,
2432 and/or the 0.8.4.27 diff to check.
2433 * In full calls the compiler now does not generate checks for declared
2434 argument types for all arguments.
2435 * various threading fixes
2436 ** and some experimental patches which didn't make it into
2437 the main tree for this release, but which are shipped in
2438 contrib/experimental-thread.patch as a possible fix for some
2439 failures (deadlock, spinning...) in GC-intensive multithreaded
2441 * fixed PPC build problem (source code incompatibility of different
2442 library versions): added offsetof() hackery which attempts to divine
2443 where glibc maintainers put uc_mcontext today
2444 * fixed bug 282: compiler does not trust type assertions while passing
2445 arguments to a full call.
2446 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2447 &OPTIONAL VALUES type parameter.
2448 * fix bug 214: algorithm for noting rejected templates is now more
2449 similar to that of template seletion. (also reported by rydis on
2451 * fixed bug 141b: printing backquoted information readably and prettily
2452 inserts a space where necessary.
2453 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2454 (CHARACTER 10) are now reported as errors, rather than propagated
2455 as unknown types. (reported by piso on #lisp)
2456 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2457 with values NIL and :ERROR. (thanks to Milan Zamazal)
2458 * fixed bug 191c: CLOS now does proper keyword argument checking as
2459 described in CLHS 7.6.5 and 7.6.5.1.
2460 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2461 longer raise an error; further, using a list as a for-as-arithmetic
2462 counter now raises a meaningful error.
2463 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2464 now understood by sequence creation functions such as MAKE-SEQUENCE
2466 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2467 a STRING-INPUT-STREAM.
2468 * compiler enhancement: SIGNUM is now better able to derive the type
2470 * type declarations inside WITH-SLOTS are checked. (reported by
2472 * fixed some bugs revealed by Paul Dietz' test suite:
2473 ** incorrect optimization of TRUNCATE for a positive first
2474 argument and negative second.
2475 ** compiler failure in let-convertion during flushing dead code.
2476 ** compiler failure while deriving type of TRUNCATE on an
2477 interval, containing 0.
2478 ** ASH of a negative bignum by a negative bignum count now returns
2480 ** intersection of CONS types now canonicalizes properly, fixing
2481 inconsistencies in SUBTYPEP.
2483 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2484 * incompatible change: The --disable-debugger command line
2485 option now clobbers the debugger at a more fundamental
2486 level, by redefining #'INVOKE-DEBUGGER instead of by
2487 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2488 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2489 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2490 enter the debugger REPL and then suffer recursive errors
2491 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2492 while under the new system, BREAK in --disable-debugger mode
2493 terminates the system just as an unhandled error would.
2494 * fixed compiler performance when processing loops with a step >1;
2495 * bug fix: DOCUMENTATION now retrieves generic function
2496 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2497 support has been systematized, and now supports the methods
2498 specified by ANSI, along with a default method and a method for
2499 slot documentation. (reported by Nathan Froyd)
2500 * bug fix: effective methods associated with a generic function are
2501 no longer cached over a change of that generic function's method
2502 combination. (reported by Andreas Fuchs)
2503 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2504 names a non-existent directory. (thanks to Andreas Fuchs)
2505 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2506 the PPC platform, lead to stack corruption; this has been fixed.
2507 (reported by Rainer Joswig)
2508 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2509 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2510 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2511 arithmetic in general, is now much more reliable on the PPC
2513 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2514 platform now returns the right answer.
2515 * optimization: restored some effective method precomputation in
2516 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2517 precomputation is now tunable.
2518 * optimization: compiler-internal data structure use has been
2519 reviewed, and changes have been made that should improve the
2520 performance of the compiler by about 20%.
2521 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2522 simple-base-strings and simple-bit-vectors is improved.
2523 * optimization: the optimization of 32-bit logical and arithmetic
2524 functions introduced in version 0.8.3 on the x86 has been
2525 implemented on the mips, ppc and sparc platforms; an
2526 implementation of the same facility, but for 64-bit arithmetic,
2527 has been added for the alpha.
2528 * microoptimization: the compiler is better able to make use of the
2529 x86 LEA instruction for multiplication by constants.
2530 * bug fix: in some situations compiler did not report usage of
2531 generic arithmetic in (SPEED 3) policy.
2532 * bug 145b fix: compiler used wrong type specifier while converting
2533 MEMBER-types to numeric.
2534 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2536 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2537 index argument now works properly on the Alpha platform.
2538 * bug fix: floating point exception treatment on the Alpha platform
2540 * bug fix: FILE-POSITION works much better on string input and
2541 output streams. (thanks to Nikodemus Siivola)
2542 * bug fix: many threading/garbage collection symptoms sorted.
2543 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2544 might be pseudo-atomic.
2545 * internal change: Stopping for GC is now done with signals not
2546 ptrace. GC is now done in whichever thread wanted it, instead of
2548 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2550 * bug fix: result form in DO is not contained in the implicit
2552 * incompatible change: ICR structure is changed; the value part of
2553 CONTINUATION is now called LVAR; corresponding functions are
2554 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2555 * added type deriver for ISQRT (thanks to Robert E. Brown).
2556 * bug fix: better support for loading from the command line when an
2557 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2559 * fixed some bugs revealed by Paul Dietz' test suite:
2560 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2561 ** ROUND and FROUND now give the right answer when given very
2562 small float arguments.
2563 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2565 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2566 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2567 ** LCM should return a non-negative integer.
2568 ** PARSE-INTEGER returned the index of a terminator instead of the
2569 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2570 ** PARSE-INTEGER returned an incorrect index being applied to a
2572 ** LCM with two arguments of 0 returns 0 rather than signalling
2574 ** unsigned addition of a 32-bit constant with the high bit set no
2575 longer causes an internal compiler error on the x86.
2576 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2577 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2578 with negative last argument.
2579 ** byte specifiers with zero size and position no longer cause
2580 an error during type derivation.
2581 ** bignum multiplication on the Alpha platform now returns the
2583 * porting: The system now builds on SuSE AMD64, although it still
2584 generates a 32-bit binary.
2585 * .fasl file incompatibility: The fasl file version number has
2586 been incremented (because of the changes to internal compiler
2587 data structures referred to above).
2589 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2590 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2591 more accurately, on the Darwin kernel running on PowerPC hardware.
2592 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2593 * Compiler code deletion notes now signal a condition of type
2594 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2595 an associated MUFFLE-WARNING restart.
2596 * The compiler now performs limited argument count validation of
2597 constant format strings in FORMAT, and where appropriate in ERROR,
2598 CERROR and WARN. (thanks to Gerd Moellmann)
2599 * New ASDF-INSTALL contrib can be used for automatic download and
2600 installation of third-party Lisp code from CCLAN or other sites
2602 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2603 which forces another thread to execute a function supplied by the
2605 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2606 now accept and act upon their :ELEMENT-TYPE keyword argument.
2607 (reported by Martin Atzmueller, Edi Weitz)
2608 * bug fix: FILE-POSITION now accepts position designators up to
2609 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2610 is the greater. (thanks to Patrik Nordebo)
2611 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2612 Kalle Olavi Niemitalo)
2613 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2614 printable. (reported by Eric Marsden)
2615 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2616 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2617 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2618 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2619 (thanks to Stig Sandoe)
2620 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2621 UNREAD-CHAR now correctly includes the unread character in the
2622 target sequence. (thanks to Gerd Moellmann)
2623 * bug fix in threaded builds: the system can now be suspended and
2624 resumed by shell job control with minimal disruption.
2625 * bug fixes in times and timezones >2038AD
2626 * better handling of "where is GNU make?" problem in build scripts
2627 (thanks to Nikodemus Siivola)
2628 * new optimization: inside a named function any reference to a
2629 function with the same name is considered to be a self-reference;
2630 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2631 optimization quality.
2632 * new optimization on x86: logical functions and + now have
2633 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2634 used when the result is truncated to 32 bits.
2635 * VALUES declaration is partially enabled.
2636 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2637 * fixed some bugs revealed by Paul Dietz' test suite:
2638 ** The system now obeys the constraint imposed by
2639 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2640 types form a lattice under type intersection.
2641 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2642 ** ASSOC now ignores NIL elements in an alist.
2643 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2644 and (1+ MOST-POSITIVE-FIXNUM) answers.
2645 ** The addition of a method with invalid qualifiers to a generic
2646 function does not cause an error to be signalled immediately;
2647 a warning is signalled, and the error is generated only on
2648 calling the generic function.
2649 * changed .fasl file version number, in part to add type codes for
2650 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2651 obscure ANSI requirements
2653 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2654 * fixed bug 148: failure to inline-expand a local function left
2655 garbage, confusing the compiler.
2656 * fixed bugs 3cd: structure slot readers perform type check if the
2657 slot can have an invalid value (i.e. it is either not initialized
2658 or can be written with a less specific slot writer).
2659 * bug fix: the compiler now traps array references to elements off
2660 the end of an array; previously, the bounds checking in some
2661 circumstances could go off-by-one.
2662 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2664 * type declarations for array element types now obey the description
2665 on the CLHS page "Declaration TYPE", as per discussions on
2666 sbcl-help around 2003-05-08. This means that a declaration
2667 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2668 declaration, all references to BAR will be asserted or assumed
2669 (with THE, so dependent on compiler policy) to involve objects of
2670 type FOO. Note that no such declaration is implied in
2671 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2672 * declared types of functions from the "Conditions"
2673 chapter. (reported by Paul Dietz)
2674 * bug fix: CERROR accepts a function as its first argument.
2675 * bug fix: NTH an NTHCDR accept a bignum as index
2676 arguments. (reported by Adam Warner)
2677 * optimization: character compare routines now optimize comparing
2678 against a constant character. (reported by Gilbert Baumann)
2679 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2680 argument now works properly on the MIPS platform.
2681 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2682 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2683 declared to have a functional type, does not cause an error
2685 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2686 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2687 * fixed bug: if last continuation of a deleted block has a
2688 destination, this destination should be deleted too. (reported by
2690 * fixed a bug in the bootstrap process: the host compiler's values
2691 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2692 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2693 test case from Patrik Nordebo)
2694 * improved the ability of the disassembler on the PPC platform to
2695 provide helpful disassembly notes.
2696 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2697 the class in more cases than previously.
2698 * bug fix: FILE-POSITION now understands :START and :END for
2699 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2700 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2701 8) data. (thanks to David Lichteblau)
2702 * bug fix: it is possible to add a method to a generic function
2703 without lambda list.
2704 * bug fix: reader failed to signal END-OF-FILE inside an
2705 object representation. (reported by Nikodemus Siivola)
2706 * fixed some bugs revealed by Paul Dietz' test suite:
2707 ** LAST and [N]BUTLAST should accept a bignum.
2708 ** condition slot accessors are methods.
2709 ** (VECTOR NIL) is a subtype of STRING.
2711 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2712 * minor incompatible change: some nonsensical specialized lambda
2713 lists (used in DEFMETHOD) which were previously ignored now signal
2715 * minor incompatible change: the system is now aware of the types of
2716 variables in the COMMON-LISP package, and will signal errors for
2717 most violations of these type constraints (where previously they
2718 were silently accepted).
2719 * minor incompatible change: COMPILE-FILE now uses the freedom
2720 afforded (ANSI 3.2.2.3) to use derived function types for
2721 functions defined in the same file. This also permits the system
2722 to warn on static type mismatches and function
2723 redefinition. (Currently it does not work with high DEBUG level.)
2724 * minor incompatible change: VALUES declaration is disabled.
2725 * When issuing notes, the compiler now signals a condition of type
2726 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2727 restart for use in user handlers. It is expected that the
2728 COMPILER-NOTE condition will eventually become a condition
2729 supertype to a hierarchy of note types, which will then be
2730 handleable in a similar fashion. However, at the moment, no such
2731 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2732 but it's an implementation detail, not a classification for the
2734 * Changes in type checking closed the following bugs:
2735 ** type checking of unused values (192b, 194d, 203);
2736 ** template selection based on unsafe type assertions (192c, 236);
2737 ** type checking in branches (194bc).
2738 * A short form of VALUES type specifier has ANSI meaning (it has
2739 increased the number of situations when SBCL cannot perform type
2741 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2742 keywords or constants is permissible.
2743 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2744 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2745 classes. (thanks to Antonio Martinez)
2746 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2747 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2748 argument to a pretty-print stream. Instead, it leaves any such
2749 operations to DESCRIBE-OBJECT methods.
2750 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2752 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2753 lambda lists. (thanks to David Lichteblau)
2754 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2755 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2756 (thanks to Gerd Moellmann)
2757 * fixed bug 246: increased compilation speed of long
2758 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2760 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2762 * DEFCONSTANT now throws a condition of type
2763 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2764 constant to a non-EQL value; CONTINUE and ABORT restarts
2765 respectively change and preserve the value.
2766 * fixed bug 63: The code walker, part of the implementation of CLOS,
2767 is now better at handling symbol macros.
2768 * bug fix: There is no longer an internal implementation type named
2769 CL:LENGTH. (reported by Raymond Toy)
2770 * bug fix: In macro-like defining macros/special operators the
2771 implicit block does not enclose the lambda list.
2772 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2773 enclosed in parentheses) are not suitable as type specifiers, and
2774 their use properly signals an error now.
2775 * bug fix: An argument count mismatch for a type specifier in code
2776 being compiled no longer causes an unhandled error at compile
2777 time, but signals a compile-time warning.
2778 * fixed simple vector readable printing
2779 * bug fix: DESCRIBE takes more care over whether the class
2780 precedence list slot of a class is bound before accessing it.
2781 (reported by Markus Krummenacker)
2782 * bug fix: FORMATTER can successfully compile pretty-printer format
2783 strings which use variants of the ~* directive inside.
2784 * bug fix: SEARCH now applies its TEST predicate to the elements of
2785 the arguments in the correct order. (thanks to Wolfhard Buss)
2786 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2787 in type inference. (thanks to Robert E. Brown)
2788 * bug fix: Reading in symbols with an explicit package name of ""
2789 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2790 * fixed some bugs revealed by Paul Dietz' test suite:
2791 ** NIL is now allowed as a structure slot name.
2792 ** Arbitrary numbers, not just REALs, are allowed in certain
2793 circumstances in LOOP for-as-arithmetic clauses.
2794 ** Multiple class redefinitions before slot access no longer
2795 causes a type error.
2796 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2797 association between the name and a class.
2798 ** Generic functions with non-standard method-combination and over
2799 five methods all of which return constants no longer return NIL
2800 after the first few invocations. (thanks to Gerd Moellmann)
2801 ** CALL-NEXT-METHOD with no arguments now passes the original
2802 values of the arguments, even in the presence of assignment.
2803 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2805 ** DISASSEMBLE works with closures and funcallable instances.
2806 ** ADD-METHOD now returns the generic function, not the new method.
2807 ** FIND-METHOD signals an error if the lengths of the specializers
2808 is incompatible with the generic function, even if the ERRORP
2810 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2811 which its argument is a member.
2812 ** DEFCLASS only redefines the class named by its class-name
2813 argument if that name is the proper name of the class;
2814 otherwise, it creates a new class.
2815 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2816 of the UNBOUND-SLOT condition to the name of the slot.
2817 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2818 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2819 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2820 SLOT-MAKUNBOUND in the specified fashion.
2822 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2823 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2824 cross-compilation host. As a consequence, we can now bootstrap our
2825 way up to SBCL starting with a bare gcc toolchain and human-readable
2826 source code (first the source to CLISP, then the source to SBCL).
2827 * A contributed module containing a partial implementation of the
2828 simple-streams interface has been included. (thanks to Rudi
2830 * A contributed module implementing the RFC1321 Message Digest
2831 Algorithm, known as MD5, has been included.
2832 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2833 no longer has any effect, as the code controlled by this feature
2834 has been deleted. (As far as we know, no-one has ever built using
2835 this feature, and its semantics were confused in any case).
2836 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2837 work on conditions (as required by the ANSI specification),
2838 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2839 expected behaviour on conditions. Users should note, however,
2840 that such behaviour is not required by the ANSI specification,
2841 and so use of this behaviour may render their code unportable.
2842 * fixed some bugs revealed by Paul Dietz' test suite:
2843 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2845 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2846 ** SXHASH on condition objects no longer returns NIL.
2847 ** :ALLOCATION :CLASS slots are better treated; their values are
2848 updated on class redefinition, and initforms inherited from
2849 superclasses are applied.
2850 ** REMOVE-METHOD returns its generic function argument even when
2851 no method was removed.
2852 ** SHARED-INITIALIZE now initializes the values of the requested
2853 slots, including those with :ALLOCATION :CLASS.
2854 ** ALLOCATE-INSTANCE now works on structure classes defined via
2855 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2857 ** SLOT-EXISTS-P now works on conditions, as well as structures
2859 ** MAKE-LOAD-FORM now has the required methods on
2860 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2861 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2862 keyword, and now implements the SLOT-NAMES argument.
2863 ** methods with &OPTIONAL arguments no longer allow too many
2864 arguments to be passed in the call without error.
2865 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2866 option is consistent with the required arguments of the generic
2867 function lambda list.
2868 * bug fix: REQUIRE accepts a string designator. (Thanks to
2870 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2871 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2872 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2873 * bug fix: The compiler now checks for duplicated variables in macro
2875 * bug fix: SETQ on globals returns the correct value.
2876 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2877 not a COMPILER-ERROR (followed by some other strange error on
2878 choosing the CONTINUE restart).
2879 * bug fix: make.sh and friends are now more consistent in the way that
2880 they look for GNU "make".
2882 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2883 * experimental native threads support (on x86 Linux >=2.4 only).
2884 This is not compiled in by default: you need to add :SB-THREAD to
2885 the target features. See the "Beyond ANSI" chapter of the manual
2887 * fix for longstanding nonANSIism: The old distinction between
2888 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2889 The return value from CL:FIND-CLASS is now a CLOS class, and
2890 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2891 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2892 * An interface to the MetaObject Protocol, as described in Kiczales,
2893 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2894 MIT Press, 1991, is available from the SB-MOP package.
2895 * incompatible change: the SB-PCL package should now be considered
2896 a private implementation detail, and no longer a semi-private MOP
2898 * minor incompatible change: due to rearrangement for threads, the
2899 control stack and binding stack are now allocated at arbitrary
2900 addresses instead of being hardcoded per-port. Users affected by
2901 this probably have to be doing advanced things with shared
2902 libraries, and will know who they are.
2903 * minor incompatible change: Previously, all --eval forms used were
2904 processed with READ before any of them were processed with EVAL.
2905 Now each --eval form is processed with both READ and EVAL before
2906 the next --eval form is processed. (Thus package operations like
2907 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2908 work as the user might reasonably expect.)
2909 * minor incompatible change: *STANDARD-INPUT* is now only an
2910 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2912 * minor incompatible change: Y-OR-N-P is now character-oriented,
2913 not line oriented. Also, YES-OR-NO-P now works without errors.
2914 (thanks to Antonio Martinez)
2915 * sb-aclrepl module improvements: an integrated inspector, added
2916 repl features, and a bug fix to :trace command.
2917 * Known functions, which cannot be open coded by the backend, are
2918 considered to be able to check types of their arguments. (fixing
2919 a bug report by Nathan J. Froyd)
2920 * fixed a bug in computing method discriminating functions: It is
2921 now possible to define methods specialized on classes which have
2922 forward-referenced superclasses. (thanks to Gerd Moellmann)
2923 * fixed evaluation order in optional entries (reported by Gilbert
2925 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2926 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2927 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2928 required-by-AMOP NAME argument, as well as CLASS and
2929 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2930 * fixed bug 20: DEFMETHOD can define methods using names that are
2931 not the proper names of classes to designate class specializers.
2932 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2933 Unix file descriptors, instead of blowing up. (thanks to Antonio
2935 * Garbage collection refactoring: user-visible change is that a
2936 call to the GC function during WITHOUT-GCING will not do garbage
2937 collection until the end of the WITHOUT-GCING. If you were doing
2938 this you were probably losing anyway.
2939 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2940 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2941 TYPEP the latter but not the former.
2942 * The compiler issues a full WARNING for calls to undefined functions
2943 with names from the CL package.
2944 * MAP-INTO for a vector destination is open coded. (reported by
2945 Brian Downing on c.l.l)
2946 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2947 documentation string.
2948 * fixed some bugs revealed by Paul Dietz' test suite:
2949 ** COPY-ALIST now signals an error if its argument is a dotted
2951 ** Condition slots are now accessed more correctly in the presence
2952 of multiple initargs for a given slot.
2953 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2954 exclude restarts of the same name associated with a different
2956 ** DEFCLASS of forward-referenced classes with another
2957 forward-referenced class in the superclasses list no longer
2959 ** Condition slots are now initialized once each, not multiple
2960 times. (thanks to Gerd Moellmann)
2961 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2963 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2964 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2965 arguments contain duplicated elements.
2966 ** RESTART-CASE understands local macros.
2967 ** RESTART-CASE associates exactly its own restarts with a condition.
2968 ** ENDP in safe mode checks its argument to be of type LIST.
2969 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2970 in question is unbound.
2971 ** Optimized MAKE-INSTANCE functions no longer cause internal
2972 assertion failures in the presence of duplicate initargs.
2973 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2974 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2975 propagated even in the ctor optimized implementation of
2977 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2979 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2980 * a better implementation of SXHASH on (simple) bit vectors,
2981 measured both in execution speed and in distribution of results
2982 over the positive fixnums, has been installed. Likewise, a better
2983 implementation of EQUAL for simple bit vectors is now available.
2984 * fixed CEILING optimization for a divisor of form 2^k.
2985 * fixed bug 240 (emitting extra style warnings "using the lexical
2986 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2987 by Antonio Martinez)
2988 * fixed SXHASH, giving different results for NIL depending on type
2989 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2990 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2991 variable. (found by Rolf Wester)
2992 * SBCL does not ignore type declarations for special
2993 variables. (reported by rif on c.l.l 2003-03-05)
2994 * some bug fixes in contrib/sb-aclrepl/
2995 * fixed some bugs revealed by Paul Dietz' test suite:
2996 ** a bug in the CONS type specifier, whereby the CAR and CDR
2997 types got intertwined, has been fixed;
2998 ** the type system is now able to reason about the interaction
2999 between INTEGER and RATIO types more completely;
3000 ** APPEND, [N]REVERSE and NRECONC check that those their
3001 arguments, which must be proper lists, are really so;
3002 ** An array specialized to be unable to hold elements has been
3003 implemented, as required -- yes, really -- by ANSI;
3004 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3005 on malformed property lists;
3007 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3008 * incompatible packaging change: in line with Unix convention,
3009 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3010 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3011 * REQUIRE and PROVIDE are now optionally capable of doing something
3012 useful. See the documentation string for REQUIRE.
3013 * infrastructure for a managed SBCL contrib system: contributed
3014 modules in this release include:
3015 ** the ASDF system definition facility;
3016 ** an interface to the BSD Sockets API;
3017 ** an ACL-like convenience interface to the repl;
3018 (thanks to Kevin Rosenberg)
3019 ** an implementation of ROTATE-BYTE, with efficient implementation
3021 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3022 gives a closer approximation to the right answer than previously.
3023 (thanks to Raymond Toy)
3024 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3025 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3026 optional environment arguments, as required by ANSI.
3027 * fixed bugs in other functions taking environment objects, allowing
3028 calls with an explicit NIL environment argument to be compiled
3030 * fixed bug 228: primary return values from
3031 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3032 COMPILE or FUNCTION.
3033 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3034 :TYPE will no longer signal errors on innocuous objects.
3035 * fixed bug 231b: SETQ is better at respecting type declarations in
3036 the lexical environment.
3037 * fixed a bug in DEFCLASS: classes named by symbols with no or
3038 unprintable packages can now be defined.
3039 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3040 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3041 * fixed compiler failure related to checking types of functions.
3042 (reported by Robert E. Brown)
3043 * the compiler is now much more consistent in its error-checking
3044 treatment of bounding index arguments to sequence functions: in
3045 (SAFETY 3) code, errors will be signalled in almost all cases if
3046 invalid sequence bounding indices are passed to functions defined
3047 by ANSI to operate on sequences.
3048 * fixed a bug in the build procedure: documentation of SBCL-specific
3049 packages is now preserved and available in the final Lisp image.
3050 * lifted FDEFINITION lookup out of loops in the implementation of
3051 many list operations. (thanks to Robert E. Brown)
3052 * fixed a bug in the reader: the #n# reader macro now works for
3053 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3054 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3055 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3056 E. Brown and Tony Martinez respectively)
3057 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3058 SLOT-BOUNDP: in particular, it is now able to optimize them much
3059 better, and is now not vulnerable to having packages renamed.
3060 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3061 always called when a slot is not present in an instance. (thanks
3063 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3064 longer signal an error on unreading a character following EOF on
3065 the previous constituent stream. (thanks to Tony Martinez)
3066 * fixed some bugs revealed by Paul Dietz' test suite:
3067 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3068 not just nonnegative fixnums;
3069 ** the logical bit-array operators such as BIT-AND now accept an
3070 explicit NIL for their "opt-arg" argument (to indicate a
3071 freshly-consed result bit-array);
3072 ** ELT now signals an error on an invalid sequence index in safe
3074 ** the type system is now cleverer about negations of numeric
3075 types, and consequently understands the BIGNUM and RATIO types
3077 ** the type system is now cleverer about the interaction between
3078 INTEGER and RATIO types: while bugs still remain, many more
3079 cases are accurately computed;
3080 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3081 if it is in the last clause;
3082 ** CONSTANTLY now correctly returns a side-effect-free function in
3084 ** DECLARE is no longer treated as a special-operator; in
3085 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3086 * incremented fasl file version number due to the change in the
3087 DEFSTRUCT-SLOT-DESCRIPTION structure.
3089 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3090 * minor incompatible change: code processed by the "interpreter" or
3091 EVAL now has a compilation optimization policy of (DEBUG 2)
3092 (changed from (DEBUG 1)) to improve debuggability of interactive
3093 development, and to allow the use of the debug RETURN command in
3095 * an experimental implementation of the RETURN command for the
3096 debugger has been included. (thanks to Frederik Kuivinen)
3097 * fixed bug 62: constraints were not propagated into a loop.
3098 * fixed bug in embedded calls of SORT (reported and investigated by
3100 * fixed some bugs revealed by Paul Dietz' test suite:
3101 ** printing and reading of arrays with some dimensions having
3102 length 0 (thanks to Gerd Moellmann);
3103 ** BOA constructor with &AUX argument without a default value does
3104 not cause a type error;
3105 ** CONSTANTP now returns true for all self-evaluating objects.
3107 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3108 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3109 accessors that are related by inheritance, as specified in the
3110 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3111 Valtteri Vuorikoski)
3112 * The compiler is now able to inline functions that were defined in
3113 a complex lexical environment (e.g. inside a MACROLET).
3114 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3116 * Support for the upcoming FreeBSD-5.0 release has been included.
3117 (thanks to Dag-Erling Smorgrav)
3118 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3119 effect when it is not in a toplevel context.
3120 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3121 stand a better chance of being correct. (thanks to Gerd
3123 * fixed bug in COERCE, which now signals an error on coercing a
3124 rational to a bounded real type which excludes the expected
3126 * The compiler is now able to derive types more accurately from the
3127 COERCE and COMPILE functions.
3128 * fixed bug 223: functional binding is considered to be constant
3129 only for symbols in the CL package.
3130 * fixed bug 231: SETQ did not check the type of a variable being set
3131 (reported by Robert E. Brown)
3132 * A new optimization for MAKE-INSTANCE has been included, fixing
3133 various bugs (including relating to :ALLOCATION :CLASS slots and
3134 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3136 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3137 ** As required by ANSI, LOOP now disallows anonymous collection
3138 clauses such as COLLECT I in conjunction with aggregate boolean
3139 clauses such as THEREIS (= I 1);
3140 ** LOOP now signals an error when any variable is reused in the
3141 same loop (including the potentially useful construct analogous
3142 to WITH A = 1 WITH A = (1+ A);
3143 ** IT is only a special loop symbol within the first clause of a
3144 conditional loop clause;
3145 ** LOOP with a typed iteration variable over a hashtable now
3146 signals a type error iff it should.
3147 * fixed some other bugs revealed by Paul Dietz' test suite:
3148 ** FILE-STREAM now names the class previously known as FD-STREAM;
3149 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3150 argument) no longer signals an error;
3151 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3152 of the slot symbol, rather than using the current package
3153 ((:CONC-NAME "") continues to intern the slot's name in the
3155 * incremented fasl file version number, because of the incompatible
3156 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3157 of the new implementation of DEFINE-COMPILER-MACRO.
3159 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3160 * Support for building SBCL for MIPS platforms running in
3161 little-endian mode has now been checked in, and basic
3162 functionality on said platforms verified.
3163 * minor incompatible change: PCL now records the pathname of a file
3164 in which methods and the like are defined, rather than its
3166 * minor incompatible change: TRUENAME now considers the truename of
3167 a file naming a directory to be the pathname with :DIRECTORY
3168 component indicating that directory.
3169 * minor incompatible change: a NAMED clause in the extended form of
3170 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3171 reason for the previous behaviour is unclear.
3172 * more systematization and improvement of CLOS and MOP conformance
3173 in PCL (thanks to Gerd Moellman and Pierre Mai):
3174 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3176 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3177 primary methods with no specializers;
3178 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3180 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3181 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3182 FORWARD-REFERENCED-CLASSes; error reporting on
3183 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3185 ** SXHASH on CLOS instances now uses a slot internal to the
3186 instance to return different numbers on distinct instances,
3187 while preserving the same return value through invocations of
3189 ** DEFMETHOD signals errors when methods with longer incongruent
3190 lambda lists are added to generic functions;
3191 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3192 CLASS, as specified in AMOP;
3193 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3194 on the order returned by the primary method for classes of
3195 class STANDARD-CLASS;
3196 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3197 * fixed some bugs shown by Paul Dietz' test suite:
3198 ** DOLIST puts its body in TAGBODY;
3199 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3201 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3202 value producing form;
3203 ** if more variables are given to PROGV than values, extra
3204 variables are bound and made to have no value;
3205 ** NSUBSTITUTE on list arguments gets the right answer with
3207 ** ELT signals an error of type TYPE-ERROR when the index argument
3208 is not a valid sequence index;
3209 ** LOOP signals (at macroexpansion time) an error of type
3210 PROGRAM-ERROR when duplicate variable names are found;
3211 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3212 ** FUNCALL of special-operators now cause an error of type
3214 ** PSETQ now works as required in the presence of side-effecting
3215 symbol-macro places;
3216 ** NCONC accepts any object as its last argument;
3217 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3219 ** loop-for-as-package does not require a package to be explicitely
3221 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3223 * fixed bug 166: compiler preserves "there is a way to go"
3224 invariant when deleting code.
3225 * fixed bug 172: macro lambda lists with required arguments after
3226 &REST arguments now cause an error to be signalled. (thanks to
3228 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3229 bug. (thanks to Matthew Danish)
3230 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3232 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3233 arguments are lexically rebound. (thanks to Gerd Moellmann and
3235 * fixed bug 194: error messages are now more informative when there
3236 is no primary method applicable in a call to a generic
3237 function. (thanks to Gerd Moellmann)
3238 * fixed bug in command line argument checking (thanks to Julian
3240 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3241 (thanks to Matthew Danish)
3242 * incremented fasl file version number, because of the
3243 SXHASH-related changes in the layout of CLOS data structures
3245 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3246 * minor incompatible change: The runtime (the Unix executable named
3247 "sbcl") is now much pickier about the .core files it will load.
3248 Essentially it now requires .core files to descend from the same
3249 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3250 as the runtime does. (The intent is to prevent the crashes which
3251 can occur, and which can even be reported as mysterious failures,
3252 when people patch the sources or change the build parameters
3253 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3254 sbcl and .core files.)
3255 * fixed bug: VALUES-LIST is no longer optimized away.
3256 * fixed bug 142: The FFI conversion of C string values to Lisp
3257 string values no longer conses excessively. (thanks to Nathan
3258 Froyd porting Raymond Toy's fix to CMU CL)
3259 * began to systematize and improve MOP conformance in PCL (thanks to
3260 Nathan Froyd, Gerd Moellman and Pierre Mai):
3261 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3263 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3264 ** FINALIZE-INHERITANCE is now called on class finalization;
3265 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3266 argument precedence order.
3267 * fixed bug 202: The compiler no longer fails on functions whose
3268 derived types contradict their declared type.
3269 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3270 so it can be non-toplevel.
3271 * The fasl file version number has changed (because of the new
3272 implementation of DEFMACRO).
3273 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3274 safe code, that any length requirement by their type-specifier
3275 argument is valid. The exceptions to this are described in bug
3277 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3278 functions now check the types of their inputs as required by ANSI.
3279 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3280 introduced symbol is DECLAREd to be SPECIAL.
3281 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3282 * fixed bug: :COUNT argument to sequence functions may be negative
3283 * fixed bug: body of DO-SYMBOLS may contain declarations
3284 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3285 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3286 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3287 symbol macro only once
3288 * fixed printing of call frame when argument list is unavailable
3289 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3290 * compiler no longer signals WARNING on unknown keyword
3293 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3294 * A beta-quality port to the mips architecture running Linux,
3295 based on the old CMUCL backend, has been made. It has been tested
3296 on a big-endian kernel, and works sufficiently well to be able to
3297 rebuild itself; it has not been tested in little-endian mode.
3298 * fixed an inconsistency between gencgc.c and purify.c which made
3299 dumping/loading .core files unreliable
3300 * fixed bug 120a: The compiler now deals correctly with IFs where
3301 the consequent is the same as the alternative, instead of
3302 misderiving the return type. (thanks to Alexey Dejneka)
3303 * fixed bug 113: Logical pathnames are now dumpable (the logical
3304 host is resolved at load-time, throwing an error if it is not
3306 * fixed bug 174: FORMAT's error message is slightly clearer when a
3307 non-printing character is used in a format directive.
3308 * fixed several bugs in compiler checking of type declarations, i.e.
3309 violations of the Python "declarations are assertions" principle
3310 (thanks to Alexey Dejneka)
3311 * fixed several bugs in PCL's error checking (thanks to Gerd
3313 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3315 * fixed bug in compilation of functions as first class values
3316 (thanks to Antonio Martinez-Shotton)
3317 * The compiler's handling TYPE-ERRORs which it can prove will
3318 inevitably happen at runtime has been cleaned up and corrected
3319 in several ways. (thanks to Alexey Dejneka)
3320 * improved argument type checking for various basic arithmetic
3321 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3322 lavished on them in the past that they can be compiled in many
3323 ways in different special cases
3324 * fixed bug 181: compiler checks validity of user supplied type
3326 * cleaned up code flushing in optimization: Function calls which
3327 should signal errors for safety purposes (e.g. which ANSI says
3328 should signal errors when their arguments are of incorrect type)
3329 are no longer optimized away.
3330 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3331 * incremented fasl file version number, because changes in the
3332 implementation of sequence functions like COERCE caused
3333 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3334 in old inline expansions) to become undefined. (Actually these
3335 changes were later undone, so we might very well be binary
3336 compatible with 0.7.7 after all, but leaving the version number
3337 incremented seemed like the simplest and most conservative
3340 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3341 * An alpha-quality port to the parisc architecture running Linux,
3342 based on the old CMUCL backend, has been made. This, even more so
3343 than the other backends, should be considered still a work in
3344 progress; known problems include that the Linux kernel in 64-bit
3345 mode does not propagate the correct sigcontext structure to
3346 userspace, and consequently SBCL on a parisc64 kernel will not
3348 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3349 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3350 suppressed.) Also now that the compiler is looking at declarations
3351 in the environment, it checks optimization declarations as well,
3352 and suppresses inlining when (> DEBUG SPEED).
3353 * More fixes have been made to treatment of floating point exception
3354 treatment and other Unix signals. In particular, floating point
3355 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3356 * The detection and handling of control stack exhaustion (infinite
3357 or very deeply nested recursion) has changed. Stack exhaustion
3358 detection is now done by write-protecting pages at the OS level
3359 and applies at all optimization settings; when found, a
3360 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3361 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3362 be caught using IGNORE-ERRORS.
3363 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3364 correctly when transforming recursive LABELS functions to LETs.
3365 (thanks to Alexey Dejneka)
3366 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3367 that are names of constants or global variables.
3368 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3369 alien routines with docstrings.
3370 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3371 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3373 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3374 (thanks to Eric Marsden)
3375 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3376 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3377 * Bug fix: The SPARC backend can now compile functions involving
3378 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3379 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3380 to a functions expecting a PATHNAME-DESIGNATOR.
3381 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3382 lambda lists. (thanks to Alexey Dejneka)
3383 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3384 functions so that EXPORTing the name of the class doesn't cause
3385 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3386 to Antonio Martinez for reporting this)
3387 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3388 constant-folded without failing an assertion. (thanks to Einar
3389 Floystad Dorum for reporting this)
3390 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3391 types are now dealt with more correctly by the compiler.
3392 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3393 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3394 behaviour analogous to RENAME-FILE. This puts its behaviour more
3395 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3397 * The fasl file version number has changed again. (because of the
3398 bug fix involving the names of PCL MAKE-INSTANCE functions)
3400 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3401 * bug fix: Floating point exceptions are treated much more
3402 consistently on the x86/Linux and PPC/Linux platforms.
3403 * Array initialization with :INITIAL-ELEMENT is now much faster for
3404 cases when the compiler cannot open code the array creation, but
3405 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3406 array accesses have also seen a speed increase.
3407 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3408 specified. (This was at the root of some bad interactions between
3409 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3411 * bug fix: Internal error arguments for undefined functions are now
3412 computed correctly on the PPC/Linux platform.
3413 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3414 Raymond Toy's patch for CMU CL)
3415 * Support for the Solaris 9 operating environment has been included
3416 (thanks to Daniel Merritt)
3417 * A very ugly but hopefully complete draft of the missing FFI chapter
3418 of the manual has been created by reformatting the corresponding
3419 CMU CL manual chapter into (currently very ugly and incoherent)
3420 DocBook and bringing it up to date for SBCL behavior. Thus, the
3421 manual is now essentially complete, at least by my extreme
3422 once-and-only-once standards, whereby it's acceptable to refer to
3423 the doc strings of SB-EXT functions as the primary documentation.
3424 * The fasl file version number has changed again, due to cleanup of
3425 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3426 is no longer a static symbol.)
3428 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3429 * SBCL now builds with OpenMCL (version 0.12) as the
3430 cross-compilation host; also, more progress has been made toward
3431 bootstrapping under CLISP.
3432 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3434 * bug 158 fixed: The compiler can now deal with integer loop
3435 increments different from 1; fixing this turned out also to fix
3437 * bug 169 fixed: no more bogus warnings about using lexical bindings
3438 despite the presence of perfectly good SPECIAL declarations (thanks
3439 to David Lichteblau)
3440 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3441 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3442 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3444 * bug 180 fixed: Method combination specifications no longer ignore
3445 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3446 * bug fix: Structure type predicate functions now check their argument
3447 count as they should.
3448 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3449 correctly. (thanks to Pierre Mai)
3450 * minor incompatible change: The --noprogrammer option is deprecated
3451 in favor of the new --disable-debugger option, which is very similar.
3452 (The major difference is that it takes effect at a slightly different
3453 time at startup, causing handling of errors in --sysinit and
3454 --userinit files will be affected differently.) The
3455 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3456 been added to allow this functionality to be controlled from ordinary
3457 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3458 maintainers, who might want to run non-interactive scripts to
3459 build SBCL cores which will later be used interactively.)
3460 * minor incompatible change: The LOAD function no longer, when given
3461 a wild pathname to load, loads all files matching that pathname.
3462 Instead, an error of type FILE-ERROR is signalled.
3464 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3465 * bug 147 fixed: The compiler preserves its block link/count
3466 invariants more correctly now so that it doesn't crash. (thanks
3468 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3470 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3471 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3472 no-value-for-this-character as NIL (as specified by ANSI).
3473 * HOST-NAMESTRING on physical pathnames now returns a string that is
3474 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3475 (thanks to Christophe Rhodes)
3476 * The Alpha port handles icache flushing more correctly. (thanks to
3478 * More progress has been made toward bootstrapping under CLISP. (thanks
3479 to Christophe Rhodes)
3480 * The fasl file format has changed again, because dynamic loading
3481 on OpenBSD (which has non-ELF object files) motivated some cleanups
3482 in the way that foreign symbols are transformed and passed around.
3483 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3484 is no longer treated as whitespace by the reader, but instead as
3485 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3486 |A
\7fB|, instead of A as it used to.
3488 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3489 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3490 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3491 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3492 this as of 0.7.1.45, but was left out of the previous news section
3493 (thanks to Dan Barlow)
3494 * SBCL now runs on the Solaris operating system on SPARC architectures
3495 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3496 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3497 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3498 * SPARC backend cleanups, allowing builds of cores optimized for V8
3499 and V9 SPARCS, and also emission of code targeted to a particular
3500 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3502 * SBCL is closer to bootstrapping under CLISP, thanks to various
3503 fixes by Christophe Rhodes.
3504 * The fasl file format has changed again, to allow the compiler's
3505 INFO database to support symbol macros.
3506 * The user manual (in doc/) is formatted into HTML more nicely.
3507 (thanks to coreythomas)
3508 * The system is smarter about SUBTYPEP relationships, especially
3509 those involving NOT types (including types such as ATOM which are
3510 represented internally using NOT types). Thus SUBTYPEP is less
3511 likely to return (VALUES NIL NIL) in general, and in particular
3512 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3514 * The fasl file format has changed again, because the internal
3515 representation of types now includes a new slot to support the new
3516 SUBTYPEP-of-NOT-types logic.
3517 * (not a change in the main branch of SBCL, but a related prototype
3518 which can hopefully be merged into the main branch of SBCL in the
3519 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3520 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3521 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3522 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3523 dispatch macro character combinations. (thanks to Alexey Dejneka)
3524 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3525 that superficially look like logical namestrings correctly.
3526 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3528 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3529 default supplied-p) for &optional and &key arguments. (thanks to
3532 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3533 * incompatible change: The compiler is now less aggressive about
3534 tail call optimization, doing it only when (> SPACE DEBUG) or
3535 (> SPEED DEBUG). (This is an incompatible change because there are
3536 programs which relied on the old CMU-CL-style behavior to optimize
3537 away their unbounded recursion which will now die of stack overflow.)
3538 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3539 for non-GENCGC systems has been increased to 20M (since that
3540 seems much closer to the likely performance optimum for modern
3541 systems than the old 4M value was)
3542 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3543 and *DEBUG-PRINT-LEVEL*
3544 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3545 of CMU CL's support for SPARC, and various endianness and other
3546 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3547 * new syntactic sugar for the Unix command line: --load foo.bar is now
3548 an alternate notation for --eval '(load "foo.bar")'.
3550 ** The system now detects stack overflow and handles it gracefully,
3551 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3552 optimization settings. (This is a good thing in general, and
3553 its introduction in this version should be particularly timely
3554 for anyone whose code fails because of suppression of tail
3556 ** The system now hunts for the C variable "environ" in a more
3557 devious way, to avoid segfaults when the C library version differs
3558 between compile time and run time. (thanks to Christophe Rhodes)
3559 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3560 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3561 ** The compiler no longer issues bogus style warnings for undefined
3562 classes in the same source file as the DEFCLASSes which defined
3563 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3565 ** fixes in CONDITION class precedence list for undefined function
3566 errors (thanks to Alexei Dejneka)
3567 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3568 correctly. (thanks to Dan Barlow)
3569 ** portability fixes aiming at bootstrapping under CLISP (thanks
3570 to Dave McDonald and Christophe Rhodes)
3571 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3572 ** fixes in type translation and and type inference (thanks to
3574 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3575 ** various fixes in the new ports (thanks to Dan Barlow)
3576 * several changes related to debugging:
3577 ** suppression of tail recursion, as noted above
3578 ** stack overflow detection, as noted above
3579 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3580 is now the default. (For some time encapsulation has been more
3581 reliable than the breakpoint-based :ENCAPSULATE NIL
3582 implementation, at least on X86 systems; and I just noticed that
3583 encapsulation also seems closer to the spirit of the ANSI
3586 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3588 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3589 up properly again. (There was a packaging bug in 0.7.0 which
3590 left their definitions in SB-SYS::LOAD-FOREIGN and
3591 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3592 vital for most things which interface to C-level interfaces,
3593 like extensions working with sockets or databases or
3594 Perl-compatible regexes or whatever, and the need to fix
3595 this bug is the main reason that 0.7.1 was released so
3597 ** DEFGENERIC is now choosier about the methods it redefines, so that
3598 reLOADing a previously-LOADed file containing DEFGENERICs does
3599 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3600 cycle now works as it should. (thanks to Alexey Dejneka)
3601 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3602 fixed by Christophe Rhodes. (He actually submitted this patch
3603 months ago, and I delayed until after 0.7.0.)
3604 ** Bug 111 (internal compiler confusion about runtime checks on
3605 FUNCTION types) was fixed by Alexey Dejneka.
3606 * Some internal cleanups (getting rid of variables which aren't
3607 needed now that the byte interpreter is gone) caused the fasl
3608 file format number to change again.
3610 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3611 * major incompatible change: The default fasl file extension, i.e. the
3612 default extension for files produced by COMPILE-FILE, has changed
3613 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3615 ** There are many changes in the implementation of the compiler.
3616 SBCL is now essentially a compiler-only implementation of ANSI
3617 Common Lisp. EVAL still "interprets" a few special cases, but
3618 almost all the interesting cases are handled by creating
3619 a LAMBDA expression, calling COMPILE on it, then calling
3620 FUNCALL on the result.
3621 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3622 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3623 Since the code is newer, there might still be some new bugs
3624 (though not as many as before Martin Atzmueller's fixes:-). But
3625 the new code is substantially simpler and clearer, and hopefully
3626 any remaining bugs will be simpler, less fundamental, and more
3627 fixable then the bugs in the old code.
3628 ** The revised compiler is still a little unsteady on its feet.
3630 *** The debugging information it produces (particularly the names
3631 of FUNCTION objects) is sometimes much less useful than what
3632 the old compiler produced.
3633 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3634 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3635 within a MACROLET) has been temporarily weakened.
3636 ** There are new compiler optimizations for various functions:
3637 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3638 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3639 *** the math functions TRUNCATE, FLOOR, and CEILING
3640 *** the function-of-all-trades COERCE
3641 Mostly these should be transparent, but there's one
3642 potentially-annoying problem (bug 117): when the compiler
3643 inline-expands a function and does type analysis on the result,
3644 it can create control paths which have type mismatches, and
3645 when it can't prove that those control paths aren't taken,
3646 it will issue WARNINGs about the type mismatches. This is
3647 a particular problem in practice for the new sequence functions.
3648 It's not clear how this should be fixed, and for now, a
3649 workaround is given in the entry for 117 in the BUGS file.
3650 ** (Because of the interaction between the two previous items --
3651 occasional inlining problems and new inline expansions -- some
3652 of the new sequence function optimizations won't really kick in
3653 completely until debugging information, and then inlining, are
3654 straightened out in some future version.)
3655 * minor incompatible changes:
3656 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3657 DIRECTORY no longer implicitly promotes NIL slots of its
3658 pathname argument to :WILD. In particular, when you ask for the
3659 contents of a directory (which you used to be able to do without
3660 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3661 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3662 ** changes in behavior that ANSI explicitly defines to be
3663 implementation dependent:
3664 *** The new compiler-only implementation still conforms with ANSI,
3665 but acts a little different than before. Besides the obvious
3666 changes in performance tradeoffs (that the cost per form passed
3667 to EVAL has gone up, and the cost per form executed by EVAL
3668 has gone down), the behavior of the system changes a little
3669 because there are no longer any interpreted function objects.
3670 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3671 e.g. doing COMPILE on the output of interactive DEFUN is
3673 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3675 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3676 has changed from (:CL) to NIL.
3677 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3678 e.g. #\Newline and #\Tab, don't have names specified in the
3679 ANSI Common Lisp standard, is now based on their ASCII symbolic
3680 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3681 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3682 are no longer used for output.
3683 ** changes in internal implementation constants:
3684 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3685 4 million. (If your application spends a lot of time GCing and
3686 you have a lot of RAM, you might want to experiment with
3687 increasing it even more.)
3688 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3689 However, almost all old code should still continue to work without
3690 immediate update, as SB-C-CALL is now a (deprecated) nickname
3692 ** Old operator names in the style DEF-FOO are now deprecated in
3693 favor of new corresponding names DEFINE-FOO, for consistency with
3694 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3695 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3696 internal symbols, but a few supported extensions like
3697 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3698 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3699 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3700 etc. as you get deeper into recursive calls to the debugger
3701 command loop, instead of the old "5]", "5]]", "5]]]"
3702 sequence. (I was motivated to do this when squabbles between
3703 ILISP and SBCL left me very deeply nested in the debugger. In the
3704 short term, this change will probably provoke more ILISP/SBCL
3705 squabbles, but hopefully it will be an improvement in the long run.)
3706 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3707 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3708 function, since declaiming return types involving aliens is
3709 (1) annoyingly messy to do by hand and (2) vital to efficient
3710 compilation of code which calls such functions.
3711 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3712 longer reexported by the SB-EXT package. They're solely useful
3713 for alien code, so it seems more logical that you should get
3714 them from the SB-ALIEN package, not in SB-EXT.
3715 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3716 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3717 features. Instead, the code that they used to control is always
3718 built into the system.
3719 * many other bug fixes
3720 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3721 advantage of the new EVAL-WHEN stuff and to clean them up in
3722 general, and they are now more ANSI-compliant in a number of
3723 ways. Martin Atzmueller is responsible for a lot of this.
3724 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3726 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3727 *** correct ERROR type for various file operations
3728 *** some fixes for Lisp streams
3729 *** DEFMETHOD syntax checking
3730 *** changing old weird representation of debug information as
3731 strings (which, among their other deficiencies, don't transform
3732 correctly when you rename packages, and don't change their
3733 print representation when you change things like *PACKAGE*
3734 and *PRINT-LENGTH*) to symbols and lists of symbols
3735 He also made several improvements and fixed several bugs in DESCRIBE.
3736 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3738 *** misbehavior of WRITE-STRING/WRITE-LINE
3739 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3740 and several other LOOP problems as well
3741 *** DIRECTORY when similar filenames are present
3742 *** DEFGENERIC with :METHOD options
3743 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3744 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3745 *** argument ordering in FIND with :TEST option
3746 *** mishandled package designator argument in APROPOS-LIST
3747 *** various problems in the backquote readmacro
3748 *** a bug in APROPOS
3749 *** probably some others that I'm not describing very well here,
3750 since the CVS log documents them by reference to sbcl-devel
3751 messages, and the SourceForge archives aren't working well.:-(
3752 ** Dan Barlow improved the Alpha port (and is making progress on the
3753 PPC port, for those of you who think different).
3754 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3755 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3756 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3757 continues to work on the SPARC port (for those of you in a position
3758 to look down upon our little PC-compatible boxes from a great height).
3759 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3760 and uses that copy, rather than the current dynamic value, when
3761 it's trying to decide whether to truncate output. Thus e.g.
3762 (let ((*print-lines* 50))
3763 (pprint-logical-block (stream nil)
3765 (let ((*print-lines* 8))
3766 (print (aref possiblybigthings i) stream)))))
3767 should now truncate the logical block only at 50 lines, instead of
3768 often truncating it at 8 lines, as it did before.
3769 * The doc/cmucl/ directory, containing old CMU CL documentation
3770 from the time of the fork, is no longer part of the base system.
3771 SourceForge has shut down its anonymous FTP service, and with it
3772 my original plan for distributing the old CMU CL documentation
3773 there. For now, if you need these files you can download an old
3774 SBCL source release and extract them from it.
3775 * The fasl file version number changed again, for dozens of reasons,
3776 some of which are apparent above.
3778 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3779 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3780 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3781 patch, so that DISASSEMBLE output is much nicer.
3782 * The code in the SB-PROFILE package now seems reasonably stable.
3783 I still haven't decided what the final interface should look like
3784 (I'd like PROFILE to interact cleanly with TRACE, since both
3785 facilities use function encapsulation) but if you have a need
3786 for profiling now, you can probably use it successfully with
3787 the current CMU-CL-style interface.
3788 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3789 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3790 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3791 link now returns the dangling link itself, and for similar
3792 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3793 link itself. (In these cases the old code signalled an error and
3794 looped endlessly, respectively.) Thus, DIRECTORY now works even
3795 in the presence of dangling and cyclic symbolic links.
3796 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3797 is now a supported extension again, since the consensus on
3798 sbcl-devel was that it can be useful for ordinary development
3799 work, not just for debugging SBCL itself.
3800 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3801 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3802 that currently-defined functions might be redefined later with
3803 different return types.
3804 * Hash tables can be printed readably, as inspired by CMU CL code
3805 of Eric Marsden and SBCL code of Martin Atzmueller.
3806 * better error handling in CLOS method combination, thanks to
3807 Martin Atzmueller porting Pierre Mai's CMU CL patches
3808 * more overflow fixes for >16Mbyte I/O buffers
3809 * A bug in READ has been fixed, so that now a single Ctrl-D
3810 character suffices to cause end-of-file on character streams.
3811 In particular, now you only need one Ctrl-D at the command
3812 line (not two) to exit SBCL.
3813 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3815 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3816 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3817 does the right thing.
3818 * The implementation of some type tests, especially for CONDITION
3819 types, is now tidier and maybe faster, due to CMU CL code
3820 originally by Douglas Crosher, ported by Martin Atzmueller.
3821 * Some math functions have been fixed, and there are new
3822 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3823 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3824 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3825 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3826 likely to be built into sbcl-0.7.0.)
3827 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3828 CL, ported to SBCL by Martin Atzmueller)
3829 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3830 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3831 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3832 * There's a new slam.sh hack to shorten the edit/compile/debug
3833 cycle for low-level changes to SBCL itself, and a new
3834 :SB-AFTER-XC-CORE target feature to control the generation of
3835 the after-xc.core file needed by slam.sh.
3836 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3837 COMPILE-FILE is no longer supported, so that now every function
3838 gets an entry point, so that block compilation looks a little
3839 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3840 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3841 returns the number of bytes consed since the system started,
3842 rather than the number consed since the first time the function
3843 was called. (The new definition parallels ANSI functions like
3844 CL:GET-INTERNAL-RUN-TIME.)
3845 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3846 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3847 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3848 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3849 * Fasl file version numbers are now independent of the target CPU,
3850 since historically most system changes which required version
3851 number changes have affected all CPUs equally. Similarly,
3852 the byte fasl file version is now equal to the ordinary
3855 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3856 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3857 is no longer recognized. I apologize for this, because it was
3858 listed in SB-EXT as a supported extension, but I found that
3859 its existing behavior was poorly specified, as well as incorrectly
3860 specified, and it looked like too much of a mess to straighten it
3861 out. I have enough on my hands trying to get ANSI stuff to work..
3862 * many patches ported from CMU CL by Martin Atzmueller, with
3863 half a dozen bug fixes in pretty-printing and the debugger, and
3864 half a dozen others elsewhere
3865 * fixed bug 13: Floating point infinities are now supported again.
3866 They might still be a little bit flaky, but thanks to bug reports
3867 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3868 as flaky as they were.
3869 * The --noprogrammer command line option is now supported. (Its
3870 behavior is slightly different in detail from what the old man
3871 page claimed it would do, but it's still appropriate under the
3872 same circumstances that the man page talks about.)
3873 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3874 are now supported, and enabled by default. Thus, the compiler can
3875 handle many floating point and complex operations much less
3876 inefficiently. (Thus e.g. you can implement a complex FFT
3878 * The compiler now detects type mismatches between DECLAIM FTYPE
3879 and DEFUN better, and implements CHECK-TYPE more correctly, and
3880 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3881 thanks to patches from Martin Atzmueller.
3882 * various fixes to make the cross-compiler more portable to
3883 ANSI-conforming-but-different cross-compilation hosts (notably
3884 Lispworks for Windows, following bug reports from Arthur Lemmens)
3885 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3886 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3887 fixed thanks to Pierre Mai's CMU CL patches.
3888 * fixes to keep the system from overflowing internal counters when
3889 it tries to use i/o buffers larger than 16M bytes
3890 * fixed bug 45a: Various internal functions required to support
3891 complex special functions have been merged from CMU CL sources.
3892 (When I was first setting up SBCL, I misunderstood a compile-time
3893 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3894 * improved support for type intersection and union, fixing bug 12
3895 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3896 more obscure bugs as well
3897 * some steps toward byte-compiling non-performance-critical
3898 parts of the system, courtesy of patches from Martin Atzmueller
3899 * Christophe Rhodes has made some debian packages of sbcl at
3900 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3901 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3902 stable, but are nonetheless usable. When he's ready, I'd be happy
3903 to add them to the SourceForge "File Releases" section. (And if
3904 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3905 * new fasl file format version number (because of changes in
3906 internal representation of (OR ..) types to accommodate the new
3907 support for (AND ..) types, among other things)
3909 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3910 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3912 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3914 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3915 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3916 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3917 * DESCRIBE now works on structure objects again.
3918 * Most function call argument type mismatches are now handled as
3919 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3920 know whether the function will be redefined before the call is
3921 executed. (The compiler could flag local calls with full WARNINGs,
3922 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3923 it doesn't keep track of enough information to know whether calls
3924 are local in this sense.)
3925 * Compiler output is now more verbose, with messages truncated
3926 later than before. (There should be some supported way for users
3927 to override the default verbosity, but I haven't decided how to
3928 provide it yet, so this behavior is still controlled by the internal
3929 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3930 src/compiler/ir1util.lisp.)
3931 * Fasl file format version numbers have increased again, because
3932 support for the Gray streams extension changes the layout of the
3933 system's STREAM objects.
3934 * The Gray subclassable streams extension now works, thanks to a
3935 patch from Martin Atzmueller.
3936 * The full LOAD-FOREIGN extension (not just the primitive
3937 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3938 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3939 but like most other programs, it defaults to copying the Unix
3940 environment from the original process instead of starting the
3941 new process in an empty environment.
3942 * Extensions which manipulate the Unix environment now support
3943 an :ENVIRONMENT keyword option which doesn't smash case or
3944 do other bad things. The CMU-CL-style :ENV option is retained
3945 for porting convenience.
3946 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3947 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3949 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3951 * A patch from Martin Atzmueller seems to have solved the SIGINT
3952 problem, and as far as we know, signal-handling now works cleanly.
3953 (If you find any new bugs, please report them!)
3954 * The system no longer defaults Lisp source file names to types
3955 ".l", ".cl", or ".lsp", but only to ".lisp".
3956 * The compiler no longer uses special default file extensions for
3957 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3958 seems to expect a single default extension for all compiled code,
3959 and there's no compelling reason to try to stretch the standard
3960 to allow two different extensions.) Instead, byte-compiled files
3961 default to the same extension as native-compiled files.
3962 * Fasl file format version numbers have increased again, because
3963 a rearrangement of internal implementation packages made some
3964 dumped symbols in old fasl files unreadable in new cores.
3965 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3966 many fewer weird special cases.
3967 * Bug #17 (differing COMPILE-FILE behavior between logical and
3968 physical pathnames) has been fixed, and some related misbehavior too,
3969 thanks to a patch from Martin Atzmueller.
3970 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3971 by Tim Moore, ported to SBCL by Martin Atzmueller.
3972 * Martin Atzmueller fixed several filesystem-related problems,
3973 including bug #36, in part by porting CMU CL patches, which were
3974 written in part by Paul Werkowski.
3975 * More compiler warnings in src/runtime/ are gone, thanks to
3976 more patches from Martin Atzmueller.
3977 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3980 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3982 * DESCRIBE now works on CONDITION objects.
3983 * The debugger now handles errors which arise when trying to print
3984 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3986 * The build system now uses an additional file, customize-target-features.lisp,
3987 to allow local modifications to the target *FEATURES* list. (The point of
3988 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3989 debugging features enabled, without having to worry about propagating it
3990 into everyone's system when I do a "cvs update".) When no
3991 customize-target-features.lisp file exists, the target *FEATURES* list
3992 should be constructed the same way as before.
3993 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3994 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3995 warn about behavior which is undefined under the ANSI spec. Note: This
3996 is specified by ANSI, but it's not very popular with programmers.
3997 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3998 macro in the SBCL sources for an example of a workaround which you
3999 might use to make portable ANSI-standard code which does what you want.
4000 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4001 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4002 when it's used as a non-toplevel form. (This is required in order
4003 to implement the DEFCONSTANT-EQX macro.)
4004 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4005 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4006 funny things, due to bugs in the implementation of EVAL-WHEN
4007 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4008 non-toplevel DEFCONSTANTs are uncommon.)
4009 * The core file version number and fasl file version number have been
4010 incremented, because the old noncompliant DEFCONSTANT behavior involved
4011 calling functions which no longer exist, and because I also took the
4012 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4013 * fixed bug 1 (error handling before read-eval-print loop starts), and
4014 redid debugger restarts and related debugger commands somewhat while
4016 ** The QUIT debugger command is gone, since it did something
4017 rather different than the SB-EXT:QUIT command, and since it never
4018 worked properly outside the main toplevel read/eval/print loop.
4019 Invoking the new TOPLEVEL restart provides the same functionality.
4020 ** The GO debugger command is also gone, since you can just invoke
4021 the CONTINUE restart directly instead.
4022 ** The TOP debugger command is also gone, since it's redundant with the
4023 FRAME 0 command, and since it interfered with abbreviations for the
4025 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4027 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4028 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4029 some porting work by Martin Atzmueller)
4030 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4031 with a boatload of patches which he ported to SBCL. Now that those
4033 ** The system tries to make sure that its low-priority messages
4034 are prefixed by semicolons, to help people who like to use
4035 syntax highlighting in their ILISP buffer. (This patch
4036 was originally due to Raymond Toy.)
4037 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4038 patches originally written by Raymond Toy.
4039 ** The compiler understands coercion between single-value and
4040 multiple-VALUES type expressions better, getting rid of some very
4041 weird behavior, thanks to patches originally by Robert MacLachlan
4042 and Douglas Crosher.
4043 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4044 lambda lists, thanks to a patch originally by Pierre Mai.
4045 ** The system no longer bogusly warns about "abbreviated type
4047 ** The compiler gets less confused by inlining and RETURN-FROM,
4048 thanks to some patches originally by Tim Moore.
4049 ** The system no longer hangs when dumping circular lists to fasl
4050 files, thanks to a patch originally from Douglas Crosher.
4051 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4052 undefined function error.
4053 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4054 in structure slot initforms) for now, documented workaround instead:-|
4055 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4056 * fixed bug 5: added stubs for various Gray stream functions called
4057 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4058 installed, at least appropriate type errors are generated
4059 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4060 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4061 consistently in DEFMETHOD forms.
4062 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4063 it doesn't seem to affect SBCL after all
4064 * The C runtime system now builds with better optimization and many
4065 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4067 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4069 * The system is now under CVS at SourceForge (instead of the
4070 CVS repository on my home machine).
4071 * The new signal handling code has been tweaked to treat register
4072 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4073 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4074 downstream, e.g. in debug-int.lisp, has implicit dependencies
4075 on the unsignedness of integer representation of machine words,
4076 and that caused the system to bomb out with infinite regress
4077 when trying to recover from type errors involving signed values,
4078 e.g. (BUTLAST '(1 2 3) -1).)
4079 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4080 (This was one of the bugs Peter Van Eynde reported back in July.)
4081 * The system now uses code inspired by Colin Walters' O(N)
4082 implementation of MAP (from the cmucl-imp@cons.org mailing
4083 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4084 inline the MAP operation, and there is more than one
4085 sequence argument to the MAP call (so that it can't just
4086 do ETYPECASE once and for all based on the type of the
4087 single sequence argument). (The old non-inline implementation
4088 of the general M-argument sequence-of-length-N case required
4089 O(M*N*N) time when any of the sequence arguments were LISTs.)
4090 * The QUIT :UNIX-CODE keyword argument has been renamed to
4091 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4092 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4094 * Raymond Wiker's patches to port dynamic loading from Linux to
4095 FreeBSD have been added.
4096 * The BUGS file is now more nearly up to date, thanks in large part
4097 to Martin Atzmueller's review of it.
4098 * The debugger now flushes standard output streams before it begins
4099 its output ("debugger invoked" and so forth).
4100 * The core version number and fasl file version number have both
4101 been incremented, because of incompatible changes in the layout
4103 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4104 used to not be called for a saved Lisp image.)
4105 * Martin Atzmueller's version of a patch to fix a compiler crash,
4106 as posted on sbcl-devel 13 September 2000, has been installed.
4107 * Instead of installing Martin Atzmueller's patch for the
4108 compiler transform for SUBSEQ, I deleted the compiler transform,
4109 and transforms for some similar consing operations.
4110 * A bug in signal handling which kept TRACE from working on OpenBSD
4112 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4113 away by constant folding
4114 * The system now defines its address space constants in one place
4115 (in the Lisp sources), and propagates them automatically elsewhere
4116 (through GENESIS and the sbcl.h file). Therefore, patching the
4117 address map is less unnecessarily tedious and error-prone. The
4118 Lisp names of address space constants have also been systematized.
4119 * CVS tags like dollar-Header-dollar have been removed from
4120 the sources, because they have never saved me trouble and
4121 they've been source of trouble working with patches and other
4122 diff-related operations.
4123 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4124 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4126 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4128 * The system has been ported to OpenBSD.
4129 * The system now compiles with a simple "sh make.sh" on the systems
4130 that it's supported on. I.e., now you no longer need to tweak
4131 text in the target-features.lisp-expr and symlinks in src/runtime/
4132 by hand, the make.sh takes care of it for you.
4133 * The system is no longer so grossly inefficient when compiling code
4134 involving vectors implemented as general (not simple) vectors (VECTOR T),
4135 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4136 which dares to use the various sequence functions on non-simple
4137 vectors, takes less of a performance hit.
4138 * There is now a primitive type predicate VECTOR-T-P
4139 to test for the (VECTOR T) type, so that e.g.
4140 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4141 can now be compiled with some semblance of efficiency. (The old code
4142 turned the type declaration into a full call to %TYPEP at runtime!)
4143 * AREF on (VECTOR T) is still not fast, since it's still compiled
4144 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4145 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4146 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4147 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4148 without making full calls to SUBTYPEP at runtime.
4149 (Some analogous efficiency issues for non-simple vectors specialized to
4150 element types other than T, or for non-simple multidimensional arrays,
4151 have not been addressed. They could almost certainly be handled the
4152 same way if anyone is motivated to do so.)
4153 * The changes in array handling break binary compatibility, so
4154 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4155 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4156 instead of (VALUES T T).
4157 * By following the instructions that Dan Barlow posted to sbcl-devel
4158 on 2 July 2000, I was able to enable primitive dynamic object
4159 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4160 functionality is not implemented (since it calls ld to resolve
4161 library references automatically, requiring RUN-PROGRAM for its
4162 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4163 try to resolve library references) is now supported.
4164 * The system now flushes the standard output streams when it terminates,
4165 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4166 them at several other probably-convenient times, e.g. in each pass of
4167 the toplevel read-eval-print loop, and after evaluating a form given
4168 as an "--eval" command-line option. (These changes were motivated by a
4169 discussion of stream flushing issues on cmucl-imp in August 2000.)
4170 * The source transform for TYPEP of array types no longer assumes
4171 that an array whose element type is a not-yet-defined type
4172 is implemented as an array of T, but instead punts, so that the
4173 type will be interpreted at runtime.
4174 * There is now some support for cross-compiling in make.sh: each of
4175 the phases of make.sh has its own script. (This should be transparent
4176 to people doing ordinary, non-cross-compile builds.)
4177 * Since my laptop doesn't have hundreds of megabytes of memory like
4178 my desktop machine, I became more motivated to do some items on
4179 my to-do list in order to reduce the size of the system a little:
4180 ** Arrange for various needed-only-at-cold-init things to be
4181 uninterned after cold init. To support this, those things have
4182 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4183 symbols with such names are now uninterned after cold init).
4184 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4185 fasl files for cold load.
4186 ** Remove the old compiler structure pooling code (which used to
4187 be conditional on the target feature :SB-ALLOC) completely.
4188 ** Redo the representation of some data in cold init to be more compact.
4189 (I also looked into supporting byte compiled code at bootstrap time,
4190 which would probably reduce the size of the system a lot, but that
4191 looked too complicated, so I punted for now.)
4192 * The maximum signal nesting depth in the src/runtime/ support code has
4193 been reduced from 4096 to 256. (I don't know any reason for the very
4194 large old value. If the new smaller value turns out to break something,
4195 I'll probably just bump it back up.)
4196 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4198 * Many, many bugs reported by Peter Van Eynde have been added to
4199 the BUGS list; some have even been fixed.
4200 * While enabling dynamic object file loading, I tried to make the
4201 code easier to understand, renaming various functions and variables
4202 with less ambiguous names, and changing some function calling
4203 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4204 * While trying to figure out how to do the OpenBSD port, I tried to
4205 clean up some of the code in src/runtime/. In particular, I dropped
4206 support for non-POSIX signal handling, added various comments,
4207 tweaked the code to reduce the number of compilation warnings, and
4208 renamed some files to increase consistency.
4209 * To support the new automatic configuration functionality in make.sh,
4210 the source file target-features.lisp-expr has been replaced with the
4211 source file base-target-features.lisp-expr and the machine-generated
4212 file local-target-features.lisp-expr.
4213 * fixed a stupid quoting error in make.sh so that using CMU CL
4214 "lisp -batch" as cross-compilation host works again
4216 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4218 * DESCRIBE no longer tries to call itself recursively to describe
4219 bound/fbound values, so that it no longer fails on symbols which are
4220 bound to themselves (like keywords, T, and NIL).
4221 * DESCRIBE now works on generic functions.
4222 * The printer now prints less-screwed-up representations of closures
4223 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4224 * A private symbol is used instead of the :EMPTY keyword previously
4225 used to mark empty slots in hash tables. Thus
4226 (DEFVAR *HT* (MAKE-HASH-TABLE))
4227 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4228 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4229 now does what ANSI says that it should. (You can still get
4230 similar noncompliant behavior if bang on the hash table
4231 implementation with all the symbols you get back from
4232 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4233 This breaks binary compatibility, since tests for equality to
4234 :EMPTY are wired into things like the macroexpansion of
4235 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4237 * There's now a minimal placeholder implementation for CL:STEP,
4238 as required by ANSI.
4239 * An obscure bug in the interaction of the normal compiler, the byte
4240 compiler, inlining, and structure predicates has been patched
4241 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4242 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4244 * Missing ordinary arguments in a macro call are now detected even
4245 when the macro lambda list contains &KEY or &REST.
4246 * The debugger no longer complains about encountering the top of the
4247 stack when you type "FRAME 0" to explicitly instruct it to go to
4248 the top of the stack. And it now prints the frame you request even
4249 if it's the current frame (instead of saying "You are here.").
4250 * As specified by ANSI, the system now always prints keywords
4251 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4253 * The default initial SIZE of HASH-TABLEs is now smaller.
4254 * Type information from CLOS class dispatch is now propagated
4255 into DEFMETHOD bodies, so that e.g.
4256 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4258 is now basically equivalent to
4259 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4260 (DECLARE (TYPE SINGLE-FLOAT X))
4262 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4263 operation, without having to do run-time type dispatch.
4264 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4265 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4266 * Since I don't seem to be making big file reorganizations very often
4267 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4268 is overflowing my ability to conveniently back them up), I've finally
4269 checked the system into CVS. (The CVS repository is on my home system,
4270 not at SourceForge -- putting it on SourceForge might come later.)
4271 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4272 high-level GC-NOTIFY-FOO functions send their output. (There's
4273 still very little control of where low-level verbose GC functions
4274 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4275 less than it used to -- the GC-NOTIFY-FOO functions are now under
4276 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4277 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4278 in only one place in the source code, and propagates it automatically
4279 everywhere that it's needed. Thus e.g. when I bump the version from
4280 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4281 * The C source files now include boilerplate legalese and documentation
4282 at the head of each file (just as the Lisp source files already did).
4283 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4284 to his page will be replaced with a link to his new CLiki service.
4286 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4288 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4289 * The build process now looks for GNU make under the default name "gmake",
4290 instead of "make" as it used to. If GNU make is not available as "gmake"
4291 on your system, you can change this default behavior by setting the
4292 GNUMAKE environment variable.
4293 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4294 can build without error under CMU CL.
4296 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4298 * There is now a partial SBCL user manual (with some new text and some
4299 text cribbed from the CMU CL manual).
4300 * The beginnings of a profiler have been added (starting with the
4301 CMU CL profiler and simplifying and cleaning up). Eventually the
4302 main interface should be through the TRACE macro, but for now,
4303 it's still accessed through vaguely CMU-CL-style functions and macros
4304 exported from the package SB-PROFILE.
4305 * Some problems left over from porting CMU CL to the new
4306 cross-compilation bootstrap process have been cleaned up:
4307 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4308 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4309 part when getting rid of the compiler *BACKEND* stuff.)
4310 ** The value of *NULL-TYPE* was screwed up, because it was
4311 being initialized before the type system knew the final
4312 definition of the 'NULL type. This screwed up several key
4313 optimizations in the compiler, causing inefficiency in all sorts
4314 of places. (I found it because I wanted to understand why
4315 GET-INTERNAL-RUN-TIME was consing.)
4316 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4317 PROCLAIM FTYPE information. Unfortunately this broke binary
4318 compatibility again, since now the forms output by DEFGENERIC
4319 to refer to functions which didn't exist in 0.6.3.
4320 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4321 can use the new (as of 0.6.3) transform for SOME into MAP into
4323 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4324 values to (INTEGER 0 1000000), so that the time code will no longer
4325 occasionally get blown up by Linux returning 1000000 microseconds
4326 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4327 its output conform to the ANSI spec. (Alas, this makes its output
4328 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4329 * A full call to MAP NIL with a single sequence argument no longer conses.
4330 * fixes to problems pointed out by Martin Atzmueller:
4331 * The manual page no longer talks about multiprocessing as though
4332 it were currently supported.
4333 * The ILISP support patches have been removed from the distribution,
4334 because as of version 5.10.1, ILISP now supports SBCL without us
4335 having to maintain patches.
4336 * added a modified version of Raymond Toy's recent CMU CL patch for
4337 EQUALP comparison of HASH-TABLE
4339 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4341 * The system still can't cross-compile itself with
4342 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4343 entails), but at least it can compile more of itself that way
4344 than it used to be able to, and various buglets which were uncovered
4345 by trying to cross-compile itself that way have now been fixed.
4346 * This release breaks binary compatibility again. This time
4347 at least I've incremented the FASL file format version to 2, so that the
4348 problem can be detected reliably instead of just causing weird errors.
4349 * various new style warnings:
4350 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4351 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4352 ** using the lexical binding of a variable named in the *FOO* style
4353 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4354 as specified by ANSI.
4355 * *RANDOM-STATE* is no longer automatically initialized from
4356 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4357 default behavior of the system is to repeat its behavior every time
4358 it's run. If you'd like to change this behavior, you can always
4359 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4360 old convention there was no comparably easy way to get the system to
4361 repeat its behavior every time it was run.
4362 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4363 FTYPE declarations has been removed, in favor of their ANSI
4364 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4365 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4366 the types of their sequence arguments can be determined at compile time.
4367 This is done through a new open code expansion for MAP which eliminates
4368 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4369 argument types can be determined at compile time.
4370 * The optimizer now transforms COERCE into an identity operation when it
4371 can prove that the coerced object is already of the correct type. (This
4372 can be a win for machine generated code, including the output of other
4373 optimization transforms, such as the MAP transform above.)
4374 * Credit information has been moved from source file headers into CREDITS.
4375 * Source file headers have been made more standard.
4376 * The CASE macro now compiles without complaining even when it has
4379 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4381 * (Note that the way that the PCL macroexpansions were rewritten
4382 to accommodate the change in DEFGENERIC below breaks binary
4383 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4384 not run under sbcl-0.6.2. Once we get out of alpha releases,
4385 i.e. hit release 1.0.0, we'll probably try to maintain binary
4386 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4387 and sbcl-1.4.4. Until then, however, it might be fairly common
4388 for maintenance releases to break binary compatibility.)
4389 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4391 * The reporting of unhandled signals has been changed to print some
4392 explanatory text as well as the report form. (Previously only
4393 the report form was printed.)
4394 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4395 it defines, so that the compiler no longer issues undefined function
4396 warnings for compiled-but-not-yet-loaded generic functions.
4397 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4398 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4399 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4400 section of the ANSI spec are supported.
4401 * The "" nickname for the "KEYWORD" package has been removed.
4402 The reader still handles symbol tokens which begin with a package marker
4403 as keywords, but it doesn't expose its mechanism for doing so in the
4404 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4405 * The system now issues STYLE-WARNINGs for contradictory TYPE
4406 proclamations. (Warnings for contradictory FTYPE proclamations would
4407 be nice too, but those can't be done usefully unless the type system
4408 is made smarter about FUNCTION types.)
4409 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4410 systematized, so that "*target-*.lisp is supposed to exist only on the
4411 target and imply that there's a related file which exists on the
4412 host, and *host-*.lisp is supposed to exist only on the host and imply
4413 that there's a related file which exists on the target. This involves a
4414 lot of renaming. Hopefully the acute confusion caused by the renaming
4415 will be justified by the reduction in chronic confusion..
4416 ** runtime-type.lisp -> early-target-type.lisp
4417 ** target-type.lisp -> late-target-type.lisp
4418 ** early-host-format.lisp -> early-format.lisp
4419 ** late-host-format.lisp -> late-format.lisp
4420 ** host-error.lisp -> misc-error.lisp
4421 ** early-error.lisp -> early-target-error.lisp
4422 ** late-error.lisp -> late-target-error.lisp
4423 ** host-defboot.lisp -> early-defboot.lisp
4424 ** code/misc.lisp -> code/target-misc.lisp
4425 ** code/host-misc.lisp -> code/misc.lisp
4426 ** code/numbers.lisp -> code/target-numbers.lisp
4427 ** code/early-numbers.lisp -> numbers.lisp
4428 ** early-host-type.lisp -> early-type.lisp
4429 ** late-host-type.lisp -> late-type.lisp
4430 ** host-typep.lisp -> typep.lisp
4431 ** load.lisp -> target-load.lisp
4432 ** host-load.lisp -> load.lisp
4433 ** host-disassem.lisp -> disassem.lisp
4434 ** host-insts.lisp -> insts.lisp
4435 ** byte-comp.lisp -> target-byte-comp.lisp
4436 ** host-byte-comp.lisp -> byte-comp.lisp
4437 ** host-signal.lisp -> signal.lisp
4438 ** host-defstruct.lisp -> defstruct.lisp
4439 ** late-target-type.lisp -> deftypes-for-target.lisp
4440 Furthermore, several other previously target-only files foo.lisp (e.g.
4441 hash-table.lisp and random.lisp) have been split into a target-and-host
4442 foo.lisp file and a target-only target-foo.lisp file, with their key type
4443 definitions in the target-and-host part, so that the cross-compiler will
4444 know more about target types.
4445 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4446 gone away. In their place are various *BACKEND-FOO* variables
4447 corresponding to the slots of the old structure.
4448 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4449 into the target SBCL has been fixed.
4450 * The chill.lisp system for loading cold code into a running SBCL
4452 * Support for the CMU CL "scavenger hook" extension has been removed.
4453 (It was undocumented and unused in the CMU CL sources that SBCL was
4454 derived from, and stale in sbcl-0.6.1.)
4455 * Various errors in the cross-compiler type system were detected
4456 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4457 (enabling various consistency checks). Many of them were fixed,
4458 but some hard problems remain, so the compiler is back to
4459 running without *TYPE-SYSTEM-INITIALIZED* for now.
4460 * As part of the cross-compiler type system cleanup, I implemented
4461 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4462 * I have started adding UNCROSS calls throughout the type system
4463 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4464 on cross-compiler input files will be able to go away, and various
4466 * CONSTANTP now returns true for quoted forms (as explicitly required
4469 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4471 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4472 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4473 (MAKE-LIST -1). In the longer term, it ought to become true
4474 that declarations are assertions even at SAFETY 1. For now, it's not
4475 quite true even at SAFETY 3, but it's at least more nearly true..
4476 (Note that this change seems to increases the size of the system by
4477 O(5%) and to decrease the speed of the compiler by 20% or more.)
4478 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4479 for the problem of printing dozens of lines of distracting information
4480 about low-level system machinery as part of the top stack frame
4481 on entry to the debugger when an undefined function was called.
4482 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4483 is not reset to COMMON-LISP-USER.
4484 * Compilation of stuff related to dyncount.lisp has been made conditional
4485 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4486 smaller. The various dyncount-related symbols have been moved into
4487 a new "SB-DYNCOUNT" package.
4488 * tty-inspect.lisp has been renamed to inspect.lisp.
4489 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4490 feature has gone away. (When we eventually port to other flavors of
4491 libc and/or Unix, we'll try to make the differences between flavors
4492 invisible at the user level.)
4493 * Various other *FEATURES* tags, and/or their associated conditionals,
4494 have been removed if obsolescent, or given better documentation, or
4495 sometimes given more-mnemonic names.
4497 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4499 * tidied up "make.sh" script
4500 * tidied up system directory structure
4501 * better "clean.sh" behavior
4502 * added doc/FOR-CMUCL-DEVELOPERS
4503 * many many small tweaks to output format, e.g. removing possibly-confusing
4504 trailing #\. character in DESCRIBE-INSTANCE
4505 * (EQUALP #\A 'A) no longer signals an error.
4506 * new hashing code, including EQUALP hashing
4507 * tidied up Lisp initialization and toplevel
4508 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4509 * command line argument processing
4510 * added POSIX-GETENV function to deal with Unix-ish environment variables
4511 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4512 terminating SBCL on EOF
4513 * non-verbose GC by default
4514 * There is no more "sbcl" shell script; the sbcl file is now the C
4515 runtime executable (just like CMU CL).
4516 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4518 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4519 symbol and package information as Lisp native symbol and package objects
4520 instead of strings naming symbols and strings naming packages. This way,
4521 whenever packages are renamed (as in warm init), debug information is
4522 transformed along with everything else.
4523 * tweaked the optimization policy declarations which control the building
4524 of SBCL itself. Now, among other things, the system no longer saves
4525 source location debugging information. (This helps two problems at once
4526 by reducing SBCL size and by keeping SBCL from trying to look for its
4527 sources -- which may not exist -- when reporting errors.)
4528 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4529 debugging and testing purposes
4530 * cleaned up printing, making the printer call PRINT-OBJECT for
4531 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4532 methods, giving nearly-ANSI behavior
4533 * converted almost all special variables to use *FOO* naming convention
4534 * deleted PARSE-TIME functionality, since it can be done portably
4535 * moved some files out of cold init into warm init
4536 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4538 * regularized formatting of source files
4539 * added an install.sh script
4540 * fixed ridiculous memory usage of cross-compiler by making
4541 compiler/alloc.lisp not try to do pooling unless it can hook
4542 itself into the GC of the cross-compilation host. Now the system
4543 builds nicely on my old laptop.
4544 * added :SB-ALLOC in target-features.lisp-expr
4545 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4546 was not implemented)
4547 * re-did condition handling and note reporting in the compiler. Notes
4548 are no longer handled by signalling conditions. Style warnings
4549 and warnings are handled more correctly and reported in such a way
4550 that it's easy to find one or the other in your output (so that you
4551 can e.g. figure out which of many problems caused COMPILE-FILE to
4553 * changed the severity of several compiler warnings from full WARNING
4554 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4555 compiler note reporting so that it doesn't use the condition system
4556 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4557 COMPILE-FILE command)
4558 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4559 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4560 no longer supported, since their implementation was deeply intertwingled
4561 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4562 * removed bogus "support" for compiler macros named (SETF FOO), and
4563 removed the compiler macro for SETF INFO (but only after making a fool
4564 of myself on the cmucl-imp mailing list by posting a bogus patch for
4565 DEFINE-COMPILER-MACRO..)
4566 * Compiled files containing forms which have side effects on the Lisp
4567 reader (such as DEFPACKAGE forms) are now handled more correctly.
4568 (Compiler queuing of top level lambdas has been suppressed by setting
4569 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4570 * deleted various currently-unused source files, e.g. gengc.lisp. They
4571 may be added back at some point e.g. when porting to other architectures,
4572 but until they are it's distracting to distribute them and to try to
4574 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4575 there were so many of them they're just distractions, and UNCROSS is
4576 known to be able to handle the current sources
4577 * moved PROFILE functionality into TRACE, so that it will be clear
4578 how the wrapping and unwrapping of functions when you profile them
4579 interacts with the wrapping and unwrapping of functions when you
4580 trace them. (Actually, the functionality isn't there yet, but at least
4581 the interface specification is there. Hopefully, the functionality will
4582 arrive with some future maintenance release.)
4583 * removed host-oops.lisp
4584 * changed signature of QUIT function to allow UNIX-CODE argument
4585 * fixed READ-SEQUENCE bug
4586 * tweaked verbose GC output so that it looks more like the progress
4587 output that ANSI specifies for functions like LOAD
4588 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4589 * added <http://sbcl.sourceforge.com> to the banner information printed by