1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.17 relative to 1.0.16:
3 * temporary regression: user code can no longer allocate closure
4 variable storage on stack, due to bug 419 without explicitly
5 requesting it. Please consult sbcl-devel for advice if you need to
6 use this feature in the meanwhile.
7 * new feature: runtime argument --control-stack-size can be used to
8 adjust thread default control stack size.
9 * enhancement: improved TIME output
10 ** all times are reported using the measured accuracy (milliseconds
11 for real and GC times, microseconds for everything else.)
12 ** processor cycle counts on x86 and x86-64.
13 ** interpreted forms are counted for both evaluator modes.
14 ** number of lambdas converted by the compiler is reported.
15 ** CPU percentage report (computed from real and total run time.)
16 ** more comprehensive run time reporting, using a condenced format
17 ** interperted form, lambda, and page fault counts are omitted
19 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
21 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
22 * optimization: two argument forms of LAST are upto ~10% faster
23 in normal SPEED policies.
24 * optimization: NCONC no longer needs to heap cons its &REST list
25 in normal SPEED policies.
26 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
28 * bug fix: UNION and NUNION work with :TEST-NOT once more,
29 regression since 1.0.9.1. (thanks to Eric Marsden)
30 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
31 since 1.0.15.36. (thanks to Paul Khuong)
32 * bug fix: LAST when always returned the whole list when given a bignum
33 as the second argument.
34 * bug fix: dynamic extent allocation of nested lists and vectors
35 could leak to otherwise accessible parts.
36 * bug fix: invalid optimization of heap-allocated alien variable
38 * bug fix: fasl header checking is less vulnerable to different
39 platform word lengths.
40 * bug fix: more correct assembler syntax for GNU binutils
41 2.18.50.0.4 support. (thanks to Marijn Schouten)
42 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
44 * bug fix: the fopcompiler can handle LOCALLY forms (with no
45 declarations) successfully. (reported by Attila Lendvai)
47 changes in sbcl-1.0.16 relative to 1.0.15:
48 * minor incompatible change: revert the changes to sb-posix's error
49 signaling added in 1.0.14.
50 * minor incompatible change: change PROBE-FILE back to returning
51 NIL whenever we can't get a truename, as was the case before 1.0.14.
52 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
53 inherits from ERROR instead of just CONDITION.
54 * new feature: SB-INTROSPECT can provide source locations for instances
55 as well. (thanks to Tobian Ritterweiler)
56 * optimization: binding special variables now generates smaller code
57 on threaded platforms.
58 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
59 and cases where no :TEST is given but the compiler can infer that
60 the element to search is of type (OR FIXNUM (NOT NUMBER)).
61 * optimization: better LOGNOT on fixnums.
62 * optimization: modular arithmetic for a particular requested width
63 is implemented using a tagged representation unless a better
64 representation is available.
65 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
66 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
67 for wellformedness and returns a specialized vector. (reported by
69 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
70 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
71 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
72 unscheduling timer at the same time as another timer fires.
73 * bug fix: don't reschedule timers for dead threads.
74 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
75 * bug fix: copying output from RUN-PROGRAM to a stream signalled
76 bogus errors if select() was interrupted.
77 * enhancement: add support for fcntl's struct flock to SB-POSIX.
79 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
80 * enhancement: cleaner backtraces for interactive interrupts, as
81 well as other cases where the interesting frames used to be
82 obscured by interrupt handling frames.
83 * enhancement: untracing a whole package using (UNTRACE "FOO") is
84 now supported, and tracing a whole package using (TRACE "FOO") now
85 traces SETF-functions as well.
86 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
87 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
88 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
89 * unreadably printed representation of hash-tables now includes
91 * bug fix: partially fixed #188: type propagation from assignments
92 is now more efficient.
93 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
94 'DOUBLE-FLOAT) are not flushable.
95 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
96 full address of the object, and none of the tag bits.
97 * bug fix: readably printing hash-tables now respects other printer
98 control variables. (reported by Cedric St-Jean)
99 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
100 keyword with MAKE-HASH-TABLE.
101 * bug fix: export SB-POSIX:MKSTEMP.
102 * bug fix: SORT was not interrupt safe.
103 * bug fix: XREF accounts for the last node of each basic-block as
105 * bug fix: MAKE-INSTANCE optimizations interacted badly with
106 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
107 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
108 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
109 create obsolete instances in the case of redefinition or
110 obsoletion of a superclass. (thanks to Andy Hefner)
111 * bug fix: Support for the Alpha architecture has been revived; it had
112 suffered somewhat from lack of maintenance since sbcl-1.0.
113 * improvements to the Windows port:
114 ** The system detects the codepage to use at startup, instead of
115 using the value from the saved core. (thanks to Kei Suzuki)
117 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
118 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
119 (see documentation for details.)
120 * revived support for OpenBSD (contributed by Josh Elsasser)
121 * partially fixed bug #108: ROOM no longer suffers from occasional
122 (AVER (SAP= CURRENT END)) failures.
123 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
124 bodies no longer cause a WARNING to be signalled. (reported by
126 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
127 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
128 the bug in TRUNCATE.) (reported by Michael Weber)
129 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
130 no samples. (reported by Andy Hefner)
131 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
132 no longer appear as (NIL ...) frames in backtraces.
133 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
134 is now actually exported from SB-EXT as documented. (reported by
136 * bug fix: sb-aclrepl now correctly understands how to inspect
137 single-floats on 64-bit platforms where single-floats are not boxed.
138 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
139 yet been finalized. (reported by Levente Meszaros)
140 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
141 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
142 SBCL-specific optimize qualities.
144 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
145 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
146 an executable in the search path, and does so in the child
147 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
148 been removed; it can be found in the CVS history, for somebody who
149 needs that search behavior (see the manual).
150 * minor incompatible change: compiler policy re. weakening type
151 checks has changed: now type checks are weakened only if SAFETY < 2
153 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
154 unparsing of directory pathnames as files. Analogously,
155 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
156 filename to parse into a directory pathname.
157 * enhancement: implicit generic function creation now signals a
158 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
159 users can bind handlers for and muffle around calls to LOAD.
160 * enhancement: RUN-PROGRAM allows unicode arguments and environments
161 to be used (using the default stream external format), and allows
162 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
163 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
164 strings and vectors whose element-type or simplicity is not fully
165 known at compile-time.
166 * optimization: STRING-TRIM and related functions no longer allocate
167 a new string when no trimming needs to be performed. These functions
168 are also faster than before when the input string has been declared
170 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
171 * optimization: READ-LINE is significantly faster for files containing
173 * optimization: non-open coded uses of character comparison operators
174 (e.g. char=) no longer cons when called with more than one parameter
175 on platforms supporting dynamic-extent allocation.
176 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
177 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
178 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
180 * bug fix: some sequence functions elided bounds checking when
182 * bug fix: too liberal weakening of union-type checks when SPEED >
184 * bug fix: more bogus fixnum declarations in ROOM implementation
187 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
188 * new feature: MAKE-HASH-TABLE now experimentally accepts a
189 :SYNCHRONIZED argument, which makes the hash-table safe for
190 concurrent accesses (but not iteration.) See also:
191 SB-EXT:WITH-LOCKED-HASH-TABLE, and
192 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
193 * optimization: CONCATENATE on strings is an order of magnitude faster
194 in code compiled with (> SPEED SPACE).
195 * optimization: SUBSEQ is ~50% faster on lists.
196 * bug fix: bug 417 fixed -- source location reporting is now more robust.
197 * bug fix: SUBSEQ on a list will now correctly signal an error if if
198 END is smaller then START.
199 * bug fix: SB-PROFILE will no longer report extra consing for nested
200 calls to profiled functions.
201 * bug fix: ROOM implementation had bogus fixnum declarations which
202 could cause type-errors when calling ROOM on large images.
203 * bug fix: if file compilation is aborted, the partial fasl is now
204 deleted, and COMPILE-FILE returns NIL as the primary value.
205 * bug fix: number of thread safety issues relating to SBCL's internal
206 hash-table usage have been fixed.
207 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
208 be returned from its body when the values were being returned
209 using unknown-values return convection and the W-P-O was wrapped
210 inside an UNWIND-PROTECT.
211 * bug fix: sb-posix should now compile again under Windows, enabling
214 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
215 * incompatible change: hash-table accessor functions are no longer
216 automatically protected by locks. Concurrent accesses on the same hash-table
217 from multiple threads can give inconsistent results or even corrupt the
218 hash-table completely. Multi-threaded applications should do their own
219 locking at the correct granularity. In the current implementation it is
220 still safe to have multiple readers access the same table, but it's not
221 guaranteed that this property will be maintained in future releases.
222 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
223 and will signal an error at runtime.
224 * enhancement: SB-THREAD package now exports a semaphore interface.
225 * enhancement: CONS can now stack-allocate on x86 and
226 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
228 * enhancement: nested lists can now be stack allocated on
229 platforms providing stack allocation support.
230 * enhancement: dynamic-extent support has been extended to support
231 cases where there are multiple possible sources for the stack
233 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
234 if the mutex is uncontested on Linux.
235 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
236 as specified by the CLHS. (thanks to Tobias Rittweiler)
237 * bug fix: NaN comparison now works on x86-64.
238 * bug fix: CLOSE :ABORT T on a stream with pending output now
240 * bug fix: instances of non-standard metaclasses using standard
241 instance structure protocol sometimes missed the slot type checks
243 * bug fix: known functions can be inlined in high-debug code.
245 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
246 * minor incompatible change: the MSI installer on Windows no longer
247 associates .lisp and .fasl files with the installed SBCL.
248 * minor incompatible change: :UNIX is no longer present in *FEATURES*
249 on Windows. (thanks to Luis Oliviera)
250 * new feature: SB-CLTL2 contrib module now implements
251 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
252 * optimization: scavenging weak pointers is now more efficient,
253 requiring O(1) instead of O(N) per weak pointer to identify
254 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
255 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
256 method bodies using constant slot-names when the first argument is
257 a specializer parameter for the method.
258 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
259 names, when the class of the instance is a direct instance
260 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
261 as slow as the constant slot-name case.)
262 * optimization: member type construction is now O(N) instead
264 * optimization: UNION and NUNION are now O(N+M) for large
265 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
267 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
268 now more readable in environments like Slime which display it.
269 (thanks to Tobias C. Rittweiler)
270 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
271 was able to infer the correct argument type for the object on which
272 the CAS operation was being performed.
273 * bug fix: copy propagation interfered with parallel assignment
274 semantics in local calls. (reported by Paul Khuong)
275 * bug fix: the signed modular fixnum shift compiled to wrong code on
276 x86 and x86-64. (spotted by a slight modification to some of
279 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
280 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
281 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
282 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
284 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
285 and generic function now print the object identity for anonymous
286 instances. (thanks to Attila Lendvai)
287 * enhancement: as an extension to MOP, SBCL now supports SETF of
288 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
289 (thanks to Attila Lendvai)
290 * enhancement: sb-cover has an alternate annotation mode which puts
291 the form annotations at the car of the form, instead of annotating
292 it completely. The benefit of this mode is that it shows better
293 which forms were instrumented by the compiler.
294 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
295 by printer control variables. (reported by Dan Corkill)
296 * bug fix: system leaked memory when delayed output was performed by
297 the OS in smaller chunks then expected. (thanks to David Smith)
298 * bug fix: system leaked memory when file streams were not closed
300 * bug fix: large objects written to slow streams that were modified
301 after the write could end up with the modified state written to
302 the underlying file descriptor.
303 * bug fix: multiple threads operating in parallel on the same stream
304 could cause buffer-overflows.
305 * bug fix: source location information is stored correctly
306 (broken since 1.0.6). This bug would generally show up as the
307 Slime debugger highlighting the wrong form when the sldb-show-source
309 * bug fix: Branch forms are again annotated as branches in the sb-cover
311 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
312 on x86-64. (reported by Gregory Vanuxem)
313 * bug fix: EQUALP could return wrong results for structures with raw
314 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
315 word). (reported by Vjacheslav Fyodorov)
316 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
319 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
320 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
321 atomic compare-and-swap operations on threaded platforms.
322 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
323 allows assigning a global minimum value to optimization qualities
324 (overriding proclamations and declarations).
325 * enhancement: closed over variables can be stack-allocated on x86
327 * performance bug fix: GETHASH and (SETF GETHASH) are once again
329 * optimization: slot definition lookup is now O(1). This speeds up
330 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
331 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
332 * optimization: ASSOC and MEMBER can now be open-coded for all
333 combinations of keyword arguments when second argument is constant
334 and SPEED >= SPACE. In other cases a specialized version is
336 * bug fix: using obsoleted structure instances with TYPEP and
337 generic functions now signals a sensible error.
338 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
339 (reported by Kristoffer Kvello)
340 * bug fix: backtrace construction is now more careful when making
341 lisp-objects from pointers on the stack, to avoid creating bogus
342 objects that can be seen by the GC.
343 * bug fix: defaulting of values in contexts expecting more than 7
344 variables now works on x86-64. (reported by Christopher Laux)
345 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
347 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
348 as the property-list of a symbol.
349 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
350 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
351 situations requested, are once again file-compileable. (reported
354 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
355 * MOP improvement: support for user-defined subclasses of
356 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
357 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
358 the expansion of DEFMETHOD, is responsible for generating a form
359 which creates a list of specializers when evaluated. Additional
360 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
361 debugging and introspective support.
362 * minor incompatible change: the (unsupported) spinlock interface
363 has changed: free spinlock now has the value NIL, and a held spinlock
364 has the owning thread as its value.
365 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
366 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
368 * enhancement: name of a socket-stream is now "a socket" instead of
370 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
371 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
372 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
373 for generic functions. (Thanks to Tobias C. Rittweiler)
374 * optimization: bignum printing speed has been improved by 20-40%
375 (depending on the bignum size.)
376 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
378 * bug fix: the cache used by the CLOS to store precomputed effective
379 methods, slot offsets, and constant return values is now thread and
381 * bug fix: generic function dispatch function updating is now thread
382 and interrupt safe (in the sense that the known issues have been
384 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
385 * bug fix: interning EQL-specializers is now thread and interrupt safe.
386 * bug fix: asdf systems with dependencies to the SB-POSIX or
387 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
388 * bug fix: interrupt safety of applicable method computation has been
391 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
392 * new contrib: sb-cover, an experimental code coverage tool, is included
394 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
395 significantly faster.
396 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
397 produce more efficient code on x86-64 if the compiler can determine
398 that (+ INDEX <constant>) does not require a bounds check and FOO
399 has an element type at least 8 bits wide.
400 * enhancement: a new, experimental synchronous timeout facility is
401 provided. Refer to SB-SYS:WITH-DEADLINE for details.
402 * enhancement: when a symbol name conflict error arises, the
403 conflicting symbols are always printed with a package prefix.
404 (thanks to Kevin Reid)
405 * enhancement: stepping is now once again supported on the SPARC and
406 MIPS platforms. (It is also now more likely to work on CheneyGC
408 * enhancement: sb-sprof can now also track and report accurate call
410 * bug fixes: the treatment of non-standard subclasses of
411 SB-MOP:SPECIALIZER is more correct.
412 * incompatible change: PURIFY no longer copies the data from the
413 dynamic space into the static and read-only spaces on platforms
414 that use the generational garbage collector
415 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
417 * bug fix: GC race condition occasionally resulting in crashes with
418 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
420 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
422 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
423 a STYLE-WARNING to be signalled (regression from 1.0.4.)
424 * bug fix: an asynchronous interrupt could previously leave the
425 system running with GC inhibited.
426 * bug fix: a DECLARE form evaluated at top-level now causes an error
427 rather than silently (or verbosely) returning NIL.
428 * bug fix: trying to dissassemble functions compiled at high DEBUG could
429 result in a error being signalled due to source form lookup errors.
430 (reported by Peter Graves)
432 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
433 * incompatible change: removed writer methods for host-ent-name,
434 host-ent-addresses -- changing the values did not update the DNS
436 * minor incompatible change: changed experimental JOIN-THREAD interface
437 * documentation: the manual now lists reader and writer methods
438 in class slot documentation sections. (thanks to Richard M Kreuter)
439 * documentation: unwinding from asyncronous events has been
440 documented as unsafe.
441 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
442 in multithreaded application code.
443 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
444 platforms. (thanks to James Anderson for the optimization hint)
445 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
447 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
448 variants no longer cons.
449 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
450 their NOT- variants no longer cons.
451 * optimization: EQUAL hash tables no longer use SXHASH for objects
452 of all data types, but instead use an EQL hash for types for which
453 EQUAL is the same as EQL.
454 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
455 are significantly faster.
456 * optimization: new STRING-OUTPUT-STREAM implementation is much
457 faster for large outputs and conses 30% less on average.
458 * enhancement: XREF information is now collected for references made
459 to global variables using SYMBOL-VALUE and a constant argument.
460 * enhancement: SIGINT now causes a specific condition
461 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
462 * bug fix: FILE-POSITION used to signal an error in some cases where
463 ANSI requires it to return NIL.
464 * bug fix: ADJUST-ARRAY is now interrupt-safe.
465 * bug fix: adding and removing fd-handlers is now interrupt-safe.
466 * bug fix: inlined calls to C now ensure 16byte stack alignment on
468 * bug fix: bad type declaration in the CLOS implementation has
469 been fixed. (reported by James Anderson)
470 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
471 (thanks to Lutz Euler)
472 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
473 required by the CLHS. (reported by Samium Gromoff)
474 * bug fix: dead unbound variable references now signal an error.
475 (reported by Marco Monteiro)
476 * bug fix: / with an unused value was being deleted in safe code.
477 (thanks to Marco Monteiro and Kevin Reid)
478 * bug fix: number of characters that can be written onto a single
479 line in a file is unlimited.
480 * bug fix: some GC deadlocks caused by asynchronous interrupts have
481 been fixed by inhibiting interrupts for when GC is disabled.
482 * bug fix: some interrupt safety issues with GETHASH, (SETF
483 GETHASH), CLRHASH and REMHASH have been fixed.
484 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
485 specifier no longer causes infinite recursion.
486 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
487 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
488 * bug fix: an &environment argument with the correct variable information
489 is passed to macros that are expanded during byte compilation.
490 (reported by Samium Gromoff)
491 * bug fix: a logic error was causing the hash function for bignums to
492 have excessive amounts of collisions. (reported by Faré Rideau)
493 * bug fix: modifying the contents of an array could change the return
494 value of SXHASH on that array, which is only allowed for strings
495 and bit vectors. (bug introduced in 0.9.16)
496 * improvement: the x86-64/darwin port now passes all tests (except
497 for the debugger tests) but should still be considered
498 experimental until this is fixed.
499 * improvement: a style-warning is signaled for CASE (etc) clauses with
500 duplicate keys. (thanks to Kevin Reid)
501 * improvement: macos/x86 and macos/x86-64 now use mach exception
502 handlers for dealing with illegal instructions (for trapping and
503 error handling) and memory protection violations (for GC).
505 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
506 * new platform: experimental support for x86-64/darwin (MacOS).
507 * incompatible change: the thread-safe (on most platforms) getaddrinfo
508 and getnameinfo sockets functions are used instead of gethostbyaddr
509 and gethostbyname, on platforms where the newer functions are available.
510 As a result, the ALIASES field of HOST-ENT will always be NIL on these
512 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
513 don't print the startup banner, but behave as if --noinform was passed
514 as a command line argument. (thanks to Kevin Reid)
515 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
516 * optimization: code using alien values with undeclared types is much faster.
517 * optimization: the compiler is now able to open code SEARCH in more cases.
518 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
519 * bug fix: using standardized COMMON-LISP special variables as loop
520 variables no longer signals bogus package lock violations. (reported
522 * bug fix: declaring local loop variables to be of a range-limited type
523 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
524 (reported by Andras Simon)
525 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
526 bugs remain on x86-64.)
527 * bug fix: the #= and ## reader macros now interact reasonably with
528 funcallable instances.
529 * bug fix: type-checks for function arguments were compiled using the
530 compiler policy settings of the wrong lexical environment (in 1.0.2
532 * bug fix: SHADOW accepts characters as string designators, as required
533 by the spec (thanks to Eric Marsden)
534 * bug fix: fixed GC safety issues when foreign functions are called with
535 non-base strings as arguments
536 * bug fix: more consistent error output for fatal-compiler-warnings, like
538 * bug fix: functions with proper names were showing up as NIL in
539 backtraces (reported by Edi Weitz, regression in 1.0.2)
541 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
542 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
543 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
544 produce more efficient code on the x86 if the compiler can determine
545 that (+ INDEX <constant>) does not require a bounds check and FOO
546 has an element type at least 8 bits wide.
547 * bug fix: references to undefined variables are handled the same way
548 in toplevel forms as in the normal compiler
549 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
551 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
552 (thanks to Jon Buller)
553 * improvement: faster compilation times for complex functions
554 * improvement: added readlink support to SB-POSIX (thanks to Richard
557 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
558 * improvement: experimental support for mach exception handling on
559 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
561 * improvement: support for GBK external format.
562 (thanks to Chun Tian (binghe))
563 * improvement: the debugger now displays variables that have been closed
564 over, in code compiled with (DEBUG 2) or higher
565 * improvement: support for executable cores on NetBSD (thanks to
567 * new feature: added a RESTART-FRAME debugger command
568 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
569 be used to provide an implementation for FILE-POSITION on Gray streams
570 (thanks to Eric Marsden)
571 * new feature: add syslog, openlog and closelog support to SB-POSIX
572 (thanks to Richard Kreuter)
573 * optimization: the function call overhead in code compiled with
574 a high DEBUG optimization setting is significantly
575 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
576 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
577 (thanks to Tony Martinez)
578 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
579 evaluated once (reported by Kevin Reid)
580 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
581 works again (thanks to Kilian Sprotte)
582 * bug fix: an error is signaled for tagbodies with duplicate tags
583 (thanks to Stephen Wilson)
584 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
585 * bug fix: Win32 port can now handle foreign code unwinding Lisp
586 stack frames from alien callbacks.
587 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
588 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
589 65k pages (thanks to David Woodhouse)
590 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
592 changes in sbcl-1.0.1 relative to sbcl-1.0:
593 * new platform: FreeBSD/x86-64, including support for threading.
594 * new feature: the compiler stores cross-referencing information
595 about function calls (who-calls), macroexpansion (who-macroexpands)
596 and special variables (who-binds, who-sets, who-references) for code
597 compiled with (< SPACE 3). This information is available through the
598 sb-introspect contrib.
599 * new feature: users may subclass SEQUENCE, and have instances of
600 these classes interoperate with standard Common Lisp functions if
601 a number of methods are defined. (This feature is experimental
602 and the interface subject to change based on feedback from SBCL
603 users and the general community)
604 * improvement: sb-sprof traces call stacks to an arbitrary depth on
605 x86/x86-64, rather than the previous fixed depth of 8
606 * improvement: another pthread back-end of mutex "pthread-futex".
607 * bug fix: non-ascii command-line arguments are processed correctly
608 (thanks to Yaroslav Kavenchuk)
609 * bug fix: non-required arguments were not passed correctly when a method
610 defined using DEFMETHOD was called from a mop-generated method using
611 CALL-NEXT-METHOD (reported by Pascal Costanza)
612 * bug fix: recursion is now permitted in accessors through
613 SLOT-UNBOUND. (reported by Pascal Costanza)
614 * bug fix: an error was signaled at startup if the HOME environment
615 variable was defined, but had an empty value (reported by Peter Van Eynde)
616 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
617 signal a PROGRAM-ERROR, not a BUG.
618 * bug fix: SB-POSIX:READDIR works when built with large file support.
619 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
621 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
622 for better automatic indentation support. (thanks to Matt Pillsbury)
623 * optimization: loading generic functions no longer takes O(n^2) time,
624 proportional to the amount of methods in the generic function
625 (reported by Todd Sabin and Jeremy Brown)
626 * optimization: the FIND and POSITION family of sequence functions
627 are significantly faster on arrays whose element types have been
629 * improvements to the Windows port:
630 ** Intermittent heap corruption problems have been fixed. (thanks
631 to Alastair Bridgewater)
632 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
634 ** Lisp is able to unwind foreign exception frames from alien
635 callbacks. (thanks to Alastair Bridgewater)
637 changes in sbcl-1.0 relative to sbcl-0.9.18:
638 * improvement: experimental support for threading on FreeBSD/x86.
639 (thanks to NIIMI Satoshi)
640 * improvement: runtime option --dynamic-space-size can be used
641 to set the size of the dynamic space reserved on startup.
642 * improvement: floating point modes in effect are now saved in
643 core, and restored on startup.
644 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
645 startup, not time since first call to GET-INTERNAL-REAL-TIME.
646 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
647 threads are not running after *SAVE-HOOKS* have run.
648 * improvement: writes to CLOS instance slots are type-checked in code
649 compiled with (SAFETY 3)
650 * improvement: floating-point exception handling on FreeBSD (thanks to
652 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
653 (thanks to Zach Beane)
654 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
656 * improvement: added support for the Shift-JIS external format.
657 (contributed by NIIMI Satoshi)
658 * improvement: callbacks are supported on Linux/PPC. (thanks to
660 * bug fix: compiler bug triggered by a (non-standard) VALUES
661 declaration in a LET* was fixed. (reported by Kaersten Poeck)
662 * bug fix: file compiler no longer confuses validated and already
663 dumped structurres. (reported by Kaersten Poeck)
664 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
665 fill-pointer signals a type-error as required. (thanks to
667 * bug fix: disassemly of funcallable instances works.
668 * bug fix: single stepping on PPC.
669 * bug fix: fix thread-safety problems in the type system (generally
670 manifesting as nonsensical errors like "STRING is a bad type specifier
671 for sequences" or "The value 1 is not of type FIXNUM")
672 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
673 (reported by Josip Gracin)
674 * bug fix: an error is signaled for attempts to displace arrays with
675 incompatible element types (thanks to Mario Mommer)
676 * bug fix: more correct handling of wide characters in debug info
677 (bug reported by Attila Lendvai and fixed by Juho Snellman)
678 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
679 and don't cause extra consing
680 * optimization: MAP and MAP-INTO are significantly faster on vectors
681 whose elements types have been declared.
682 * Improvements to SB-SPROF:
683 ** Support for allocation profiling
684 ** Reduced profiling overhead, especially for long profiling runs
685 * Improvements to the Windows port:
686 ** floating point exceptions are now reported correctly.
687 ** stack exhaustion detection works partially.
688 ** more accurate GET-INTERNAL-REAL-TIME.
689 ** better RUN-PROGRAM behaviour in case of errors in the child
691 ** PROBE-FILE now simplifies pathnames correctly.
692 ** DIRECTORY now works correctly with :WILD-INFERIORS.
693 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
694 1st 1970 (although time timezone data will be unreliable).
695 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
697 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
698 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
699 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
701 * bug fix: two potential GC deadlocks affecting threaded builds.
702 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
703 returns T (reported by Anton Kazennikov)
704 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
705 with non-variable places
706 * bug fix: remove a race condition in the setting of
707 funcallable-instance functions, this should make threaded CLOS
708 code more stable against memory faults.
709 * bug fix: corruption of specials when unbinding is interrupted by an
710 asynchronous unwind (reported by Hannu Koivisto)
711 * improvement: the debugger will now also display local variables that
712 are only used once, for code compiled with a DEBUG optimization quality
715 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
716 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
717 * incompatible change: External-format support for FFI calls. The
718 SB-ALIEN:C-STRING no longer implies an ASCII
719 external-format. Instead the string is subject to external-format
720 conversion. Additionally return values of type SB-ALIEN:C-STRING
721 are by default of type (SIMPLE-ARRAY CHARACTER), not
722 SIMPLE-BASE-STRING. For an alien type that behaves like the old
723 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
724 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
725 * incompatible change: SB-EXT package no longer contains the
726 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
727 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
729 * incompatible change: the single-stepper is no longer available
730 on Alpha, Mips and Sparc platforms.
731 * minor incompatible change: the direct superclasses of
732 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
733 not (STANDARD-OBJECT FUNCTION). This makes the
734 class-precedence-lists of GENERIC-FUNCTION and
735 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
737 * minor incompatible change: the default stream external format on
738 non-unicode SBCL is no longer detected from the locale, but is always
740 * new feature: Add a version of evaluator that uses an interpreter instead
741 of the compiler. EVAL still uses the compiler by default, to switch it
742 to use the interpreter, set the value of the variable
743 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
744 * minor incompatible change: the single-stepper REPL has been merged
745 with the normal debugger (see the "Stepping" heading of the debugger help
746 for more details). The debugger command STEP will no longer switch
747 to the single-stepper REPL.
748 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
749 for a type now works.
750 * bug fix: loading of default sysinit file works. (thanks to Leonid
752 * bug fix: better detection of circularities in the file-compiler.
753 (reported by Marco Monteiro)
754 * bug fix: the CL pathname functions now work with files that have
755 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
756 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
757 systems with Unix98 pty semantics.
758 * bug fix: ASDF-INSTALL will now work with bsd tar.
759 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
761 * bug fix: timers expiring in dead threads no longer cause a
762 type-error (reported by Paul "Nonny Mouse").
763 * bug fix: thanks to more lightweight single-stepper instrumentation,
764 code compiled with (DEBUG 3) will compile and execute significantly faster,
765 and will have more accurate type-inferencing than before
766 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
767 whose bindings are modified
768 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
769 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
770 ** replace dummy implementations of CL:MACHINE-INSTANCE and
771 CL:SOFTWARE-VERSION with proper version
773 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
774 * feature: implemented the READER-METHOD-CLASS and
775 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
776 as specified by AMOP.
777 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
779 * optimization: faster LOGCOUNT implementation on x86 and x86-64
780 (thanks to Lutz Euler)
781 * optimization: hashing of general arrays and vectors has been
782 improved. (reported by Any Fingerhut)
783 * enhancement: SB-INTROSPECT is now able to find definitions of
784 profiled functions. (thanks to Troels Henriksen)
785 * enhancement: compiler-macro expansion applies now to FUNCALL forms
786 as well, allowing compiler-macros for SETF-functions to expand.
787 * enhancement: step-instrumentation no longer wraps known
788 single-value functions with multiple-value context, allowing
789 better type inference.
790 * fixed bug #337: use of MAKE-METHOD in method combination now works
791 even in the presence of user-defined method classes. (reported by
792 Bruno Haible and Pascal Costanza)
793 * fixed bug #339(c): if there are applicable methods not part of any
794 long-form method-combination group, call INVALID-METHOD-ERROR.
795 (reported by Bruno Haible)
796 * fixed bug #361: the :FUNCTION initarg in the protocol for
797 initialization of methods can now be used to override
798 internally-produced optimized functions. (reported by Bruno
800 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
801 system-provided lambda expression no longer cause warnings about
802 unbound #:|pv-table| symbols.
803 * bug fix: improved the handling of type declarations and the
804 detection of violations for keyword arguments with non-constant
806 * bug fix: potentially erronous calls to PATHNAME and
807 MERGE-PATHNAMES were being flushed in some cases.
808 (reported by Richard Kreuter)
809 * bug fix: compiled calls to TYPEP were mishandling obsolete
810 instances. (reported by James Bielman and Attila Lendvai)
811 * bug fix: format strings with ~> without matching ~< no longer
812 trigger an AVER, but signal an understandable error instead.
813 (reported by Antonio Martinez)
814 * bug fix: specifying an output-file without a pathname-type for
815 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
816 of input-file instead of "fasl". (reported by Robert Dodier)
817 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
818 (reported by James Y Knight).
819 * bug fix: compiler-macros-function did not consider the environment
820 argument for shadowing by local functions.
821 * bug fix: compiler-macros expansion was inhibited by local INLINE
823 * bug fix: inline expansions of known functions were subject to
824 step-instrumentation in high debug policies, leading to problems
826 * bug fix: compiler failed to differentiate between different CONS
828 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
829 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
830 * bug fix: #368: incorrect use of expressed vs. upgraded array
832 * bug fix: #306a: more precise unions of array types.
833 * thread-safety improvements:
834 ** CONDITION-WAIT could return early on Linux, if the thread was
835 interrupted and subsequently continued with SIGCONT.
836 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
838 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
839 * added support for the ucs-2 external format. (contributed by Ivan
841 * minor incompatible change: pretty printing of objects of type
842 (cons symbol) is, in the default pprint-dispatch-table, now
843 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
845 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
846 called later in a class's lifetime, possibly as late as when the
847 first instance of the class is created. Previously,
848 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
849 class became finalizeable.
850 * fixed bug: FILE-POSITION sometimes returned inconsistent results
851 for multibyte external-format streams. (thanks to "vbzoli")
852 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
853 with :ALLOCATION :CLASS inherited from superclasses of the
855 * fixed bug: anonymous classes can now be created using the :NAME
856 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
857 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
858 * fixed bug: core-files saved with :EXECUTABLE T can again be
859 executed when SBCL_HOME isn't set. (reported by James Knight)
860 * fixed bug: toplevel LOCALLY forms with declarations could
861 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
862 * fixed bug: printing from several different threads using different
863 values of *print-case* could cause invalid output, due to
864 some internal special variables of the printer not being bound
865 thread-locally (reported by Max Mikhanosha)
866 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
867 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
868 (reported by Pascal Costanza)
869 * fixed bug: FINALIZE-INHERITANCE is called from
870 REINITIALIZE-INSTANCE on classes when the class has previously
871 been finalized, as required by AMOP.
872 * minor code generation optimizations:
873 ** better register allocation in CLOS dispatching functions
874 ** overflow detection when coercing signed bytes to fixnums on x86-64
875 ** is now implemented with one IMUL instruction instead of three shifts
876 ** more efficient bit-vector access on x86 and x86-64
877 ** more efficient access to raw structure slots on x86 and x86-64
878 * fixed some bugs revealed by Paul Dietz' test suite:
879 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
882 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
883 * feature: thread support on Solaris/x86, and experimental thread support
885 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
887 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
888 default method for SLOT-UNBOUND.
889 * minor incompatible change: prevent the user from specializing the
890 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
891 somewhat counter to the intent of the protocol, I (CSR) think, and
892 additionally it just doesn't work in SBCL as currently
893 implemented, thanks to optimizations (that are always valid for
894 the other three SLOT-VALUEish functions, but not for the setter).
895 * minor incompatible change: the :SB-LDB feature is now enabled by
896 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
897 the low-level debugger.
898 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
899 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
900 down to an SB-SYS:FD-STREAM, allowing direct communication in
901 more cases. Temporary files and pipes are still used as a fallback
903 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
904 on the non-reentrant C functions localtime(3) and gmtime(3).
905 * bug fix: global optimization policy was not visible in LOCALLY and
907 * bug fix: class objects can be used as specializers in methods.
908 (reported by Pascal Costanza)
909 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
910 with a type error. (reported by blitz_ on #lisp)
911 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
912 failed with a type error. (reported by Pascal Bourguignon)
913 * bug fix: merging pathnames against defaults with :DIRECTORY
914 starting with '(:RELATIVE :BACK) should preserve the :BACK.
915 (reported by James Y Knight)
916 * bug fix: saving large (>2GB) cores on x86-64 now works
917 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
918 constant index and a (simple-array (signed-byte 32)) array
919 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
920 error (patch by Robert J. Macomber)
921 * feature: TIME now displays the amount of run-time spent in GC
922 * bug fix: The debugger now does a better job of respecting
923 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
924 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
925 workaround for bug 403.)
926 * bug fix: floating point exception handling now works on FreeBSD
927 (thanks to NIIMI Satoshi)
928 * fixed some bugs revealed by Paul Dietz' test suite:
929 ** MISC.641: LET-conversion were not supposed to work in late
931 * improvements to the Win32/x86 port:
932 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
933 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
935 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
936 * new feature: source path information is generated for macro-expansion
937 errors for use in IDE's like Slime (thanks to Helmut Eller)
938 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
939 * bug fix: compiler does not loop forever on an invalid type in
941 * improvement: compilation of most CLOS applications is significantly
943 * optimization: added a limited bytecode compiler for simple toplevel
944 forms, speeding up compilation and FASL loading
945 * bug fix: the statistical profiler now properly distinguishes anonymous
948 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
949 * minor incompatible change: in sbcl-0.9.11 (but not earlier
950 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
951 into subclasses of the finalized class. Now user calls to
952 FINALIZE-INHERITANCE finalize just the one class, and calls by the
953 system return before any subclasses are finalized.
954 * minor incompatible change: The reader no longer ignores errors
955 regarding non-existent packages in #+ and #- feature tests.
956 * new feature: command line options --no-sysinit, --no-userinit to
957 inhibit loading the corresponding init files
958 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
959 for sending data through UDP sockets (thanks to François-René Rideau)
960 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
961 error is signalled instead (thanks to François-René Rideau)
962 * minor incompatible change: Error signalling behaviour of lexical
963 operations violating package locks has changed slightly. Refer to
964 documentation on package locks for details.
965 * enhancement: EVAL can process IF-expressions without resorting to the
967 * bug fix: Some operations involving SIN, COS, or TAN weren't being
968 constant-folded properly due to missing out-of-line functions.
969 (reported by Mika Pihlajamäki)
970 * bug fix: LISTEN sometimes returned T even in cases where no data was
971 immediately available from the stream
972 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
973 were reversed. (reported by Levente Mészáros)
974 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
975 when given a vector displaced to an adjustable array. (reported
977 * bug fix: derivation of float boundaries from numbers outside the
978 appropriate float range (reported by John Wiseman)
979 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
981 * bug fix: precomputing cache entries for generic functions with
982 some subclasses of specializers as yet invalid does not attempt to
983 fill a cache line with a negative offset. (reported by Levente
985 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
986 allow condition class objects as arguments to DOCUMENTATION and
987 (SETF DOCUMENTATION); only find and set documentation for
988 structure names for the STRUCTURE doc-type. (suggested by Gary
990 * improvements to the Win32/x86 port:
991 ** (user-homedir-pathname) and default initialization file
992 locations now know about the user's "Documents and Settings"
993 directory (thanks to Yaroslav Kavenchuk)
994 ** run-program is implemented (thanks to Mike Thomas)
995 ** sockets support (thanks to Timothy Ritchey)
996 ** better backtrace support (thanks to Alastair Bridgewater)
997 ** sb-grovel supported
998 ** asdf-install and sb-posix work somewhat
999 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1000 * improvements to the Solaris/x86 port:
1001 ** works on Solaris 11/Solaris Express
1002 ** floating-point exception handling support
1003 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1004 * fixed some bugs revealed by Paul Dietz' test suite:
1005 ** REMOVE-METHOD returns its generic function argument even when
1006 the method is not one of the generic functions' methods.
1007 ** objects declared as MEMBER types can be admissible arguments to
1008 structure accessors.
1009 ** printing characters should simply be printed by the FORMAT ~:C
1011 ** compiler failure when compiling functions with hairy constant
1012 defaults for optional parameters.
1013 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1014 function, which is already optimized.
1016 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1017 * new platform: experimental support for SBCL x86/Darwin, including
1018 MacOS X 10.4.5 on Intel.
1019 * new feature: Unicode character names are now known to the system
1020 (through CHAR-NAME and NAME-CHAR).
1021 * new feature: the filesystem location of SBCL's core file is
1022 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1023 * minor incompatible change: the contrib modules SB-POSIX and
1024 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1025 this change is to make it easier to distribute
1026 location-independent binaries.
1027 * bug fix: as implied by AMOP, standardized classes no longer have
1028 slots named by external symbols of public packages. (reported by
1030 * optimization: calling functions via constant symbols -- as in
1031 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1032 via the function object as in (FUNCALL #'FOO).
1033 * optimization: on x86 and x86-64, the calling convention for the
1034 case of dealing with an unknown number of values has been altered
1035 to be friendlier to the prediction heuristics implemented,
1036 particularly with reference to CALL and RET pairing. (thanks to
1037 Alastair Bridgewater)
1038 * optimization: on x86, the code for access to thread-local symbol
1039 values and binding/unbinding of thread-local symbols is smaller.
1040 (thanks to Alastair Bridgewater)
1041 * enhancement: CONSTANTP is now able to determine constantness of
1042 more complex forms, including calls to constant-foldable standardized
1043 functions and some special forms beyond QUOTE.
1044 * fixed bug: occasional GC crashes on Solaris/x86
1045 * optimization: x86-64 supports stack allocation of results of simple
1046 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1047 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1048 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1049 (thanks to James Knight)
1050 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1051 by the standard (thanks to Stephen Compall)
1053 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1054 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1055 be used for bundling the runtime and the core file into one
1056 executable binary. This feature is not currently supported on all SBCL
1057 platforms. (thanks to James Bielman and NIIMI Satoshi)
1058 * new feature: a generational or ephemeral garbage collector is now
1059 the default on the PowerPC platform (both Linux and Darwin). The
1060 old Cheney (stop and copy) collector is a build-time option.
1061 (thanks to Cyrus Harmon, after Raymond Toy)
1062 * minor incompatible change: the method by which SBCL finds its
1063 contributed modules has changed; it no longer relies on symbolic
1064 links from an $SBCL_HOME/systems directory, but searches directly
1065 in the subdirectories of $SBCL_HOME.
1066 * enhancement: the dynamic heap size on the Linux/PPC platform is
1067 markedly larger, even using the older Cheney garbage collector.
1068 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1069 certain complicated string types. (reported by Gary King)
1070 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1071 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1072 * fixed bug: DOCUMENTATION on structures no longer signals an
1073 error if no structure type of the right name exists. (reported by
1075 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1076 applicable non-standard primary or :AROUND method on
1077 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1078 no longer cause unbound variable errors. (reported by Kevin Reid)
1079 * fixed bug: metacircle resolution in cases where methods have slots
1080 added before the slots from STANDARD-METHOD. (reported by Jean
1082 * fixed bug: the Power PC assembly code for calling into lisp
1083 sometimes computed its return address wrongly (depending on the
1084 15th bit of the address, fixed at link time). This used to
1085 manifest itself in a segmentation violation while building PCL.
1086 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1087 many others over the years)
1088 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1089 the stack pointer (treated as a signed integer) is negative.
1090 (thanks to Peter van Eynde)
1092 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1093 * new platform: experimental support for the Windows operating
1094 system has been added. (thanks to Alastair Bridgewater)
1095 * fixed several bugs in and robustified the PPC FFI (including
1096 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1097 * bug fix: allow non-simple string symbol names (reported by Paul
1099 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1101 * bug fix: saving a core corrupted callbacks on x86/x86-64
1102 * bug fix: closed a loophole in metacircularity detection and
1103 grounding in the PCL implementation of CLOS.
1104 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1105 (reported by tomppa on #lisp)
1106 * bug fix: clear the direction flag on Lisp -> C transitions, as
1107 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1108 (reported by Andrej Grozin and Hendrik Maryns)
1109 * optimization: major improvements to GC efficiency on GENCGC platforms
1110 * optimization: faster implementation of EQUAL
1111 * optimization: emit more efficient opcodes for some common
1112 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1113 * optimization: several other minor code-generation improvements on x86-64
1114 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1116 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1117 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1118 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1119 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1120 by ANSI as a generic function, and for consistency (SETF
1121 GENERIC-FUNCTION-NAME) is treated likewise.
1122 * fixed bug #233.b: make constraint propagation notice when a variable
1123 value is changed after it is referenced but before it is used
1124 * fixed bug #296: no more arbitrary behaviour from filenames with
1125 odd characters as --load arguments. (reported by Adam Warner)
1126 * fixed bug #390: :CHARACTER-SET pathname components now work as
1127 expected. (reported by Tim Daly Jr)
1128 * fixed bug #391: complicated :TYPE intersections in slot
1129 definitions no longer cause an error in PCL internals.
1130 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1131 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1132 returning the number of octets which would be written to the
1133 file-stream. (thanks to Robert J. Macomber)
1134 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1135 arguments to the internal stream functions. (thanks to David
1137 * bug fix: stack exhaustion is now handled on the x86/SunOS
1138 platform. (thanks to Daisuke Homma)
1139 * bug fix: more accurate ROOM results on GENCGC platforms
1140 * optimization: improved type inference for arithmetic-for
1141 index variables in LOOP
1142 * optimization: faster floating-point SQRT on x86-64
1143 * fixed some bugs revealed by Paul Dietz' test suite:
1144 ** DOCUMENTATION returns NIL instead of "" for method combinations
1145 that don't have a docstring
1147 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1148 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1149 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1150 therefore are not customizeable by user code (as seems to be at
1151 least permitted and maybe required by AMOP). As a consolation,
1152 however, the SBCL implementation of these functions now calls
1153 REINITIALIZE-INSTANCE as specified by AMOP.
1154 * bug fix: slot-definition documentation is propagated as per ANSI
1155 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1156 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1157 argument, as do eslotd initialization methods. (from Pascal
1158 Costanza's "Closer" project)
1159 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1160 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1162 * bug fix: it is now possible to have more than one subclass of
1163 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1164 (reported by Bruno Haible, Pascal Costanza and others)
1165 * bug fix: the dependent update protocol now works for generic
1166 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1167 and Pascal Costanza)
1168 * bug fix: condition-class instances corresponding to
1169 DEFINE-CONDITION forms are now created eagerly. (reported by
1170 Kalle Olavi Niemitalo on comp.lang.lisp)
1171 * bug fix: floating point printing is more accurate in some
1172 circumstances. (thanks to Simon Alexander)
1173 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1174 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1175 * bug fix: callbacks on OS X now preserve stack-alignment.
1176 (thanks to Cyrus Harmon)
1177 * enhancement: the x86-64 disassembler is much better at
1178 disassembling SSE instructions. (thanks to Lutz Euler)
1179 * enhancement: CHECK-TYPE on a variable now allows type-inference
1180 (thanks to Vincent Arkesteijn)
1181 * optimization: improved performance of EUC-JP external format.
1182 (thanks to NIIMI Satoshi)
1183 * optimization: performance improvements to IO on file streams of
1184 :ELEMENT-TYPE CHARACTER
1185 * optimization: much faster memory allocation on x86-64
1186 * optimization: faster garbage collections (latency and throughput)
1188 * optimization: faster bignum subtraction and division on x86 and x86-64
1189 (thanks to Lutz Euler)
1190 * optimization: more accurate type-inference for loops that use a
1191 floating point index variable or a negative step.
1193 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1194 * bug fix: add a workaround to SBCL looping infinitely at startup on
1195 Linux kernels with apparently buggy implementations of personality().
1196 (thanks to Svein Ove Aas)
1197 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1198 (thanks to David Lichteblau)
1199 * bug fix: local bindings shadow global symbol macros for
1200 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1201 * optimization: non-open coded uses of numeric comparison operators
1202 (e.g. >) no longer cons when called with more than one parameter
1203 on platforms supporting dynamic-extent allocation.
1204 * enhancement: saving cores with foreign code loaded is now supported
1205 on MIPS/Linux in addition to the previously supported platforms.
1206 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1207 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1208 * bug fix: division by zero in sb-sprof when no samples were collected
1209 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1210 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1211 (thanks to Alexander Kjeldaas)
1212 * new feature: ignoring the return values of destructive functions
1213 like NREVERSE signals a compile-time style-warning.
1214 (thanks to Kevin Reid)
1215 * new feature: the alignment of alien structure fields can be
1216 explicitly specified. (thanks to Cyrus Harmon)
1217 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1218 and dump core on SIGQUIT
1220 ** incompatible change: threads do not inherit values of specials
1221 from their parents (see manual)
1222 ** bug fix: threads stacks belonging to dead threads are freed by the
1223 next exiting thread, no need to gc to collect thread stacks anymore
1224 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1225 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1226 ** bug fix: dynamic variable and thread start related gc lossage
1227 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1229 * fixed some bugs revealed by Paul Dietz' test suite:
1230 ** SUBTYPEP is slightly more accurate on heinously complicated
1231 CONS types where some of the members have uncertain (in the
1232 NIL, NIL sense) type relationships to each other.
1234 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1235 no longer purified unless :PURIFY T is explicitly specified.
1236 ** Non-purified cores are significantly smaller than before
1238 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1239 * new feature: timers based on Zach Beane's excellent timer package
1240 * added support for the following external formats: koi8-u,
1241 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1242 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1243 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1244 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1245 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1246 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1247 * incompatible change: a threaded SBCL will no longer revert to
1248 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1249 * bug fix: interrupts are disabled until startup is complete; no
1250 more sigsegvs when receiving a signal to soon
1251 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1253 * bug fix: add a workaround for the memory randomization features in
1254 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1255 workaround will only be in effect on systems with the proc filesystem
1257 * bug fix: printing objects of type HASH-TABLE signals a
1258 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1260 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1261 have been running for over 50 days. (reported by Gilbert Baumann)
1262 * bug fix: the logic for getting names of functions gets less
1263 confused when confronded with alternate-metaclass
1264 funcallable-instances. (reported by Cyrus Harmon)
1265 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1266 consistent, even on internal alternate-metaclass objects.
1267 * bug fix: flush closure information collected by physical
1268 environment analysis prepass before the main pass. (bug reported
1270 * bug fix: compiler pack phase does not modify a hashtable, which is
1271 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1272 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1273 may be expanded. (reported by Alexander <malishev> on c.l.l)
1274 * bug fix: no more style-warnings when compiling code using LAST
1275 under high-SPEED low-SPACE settings. (reported by David Wallin
1277 * fixed some incompatibilities between SBCL's MOP and the MOP
1279 ** the METAOBJECT class is now implemented;
1280 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1281 STANDARD-OBJECT, as required;
1282 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1283 now compatible (as required by VALIDATE-SUPERCLASS); there
1284 remains a consistency requirement over the presence or absence
1285 of the FUNCTION class in the superclass list of finalized
1286 classes; see the manual for more details;
1287 ** the :AROUND method for COMPUTE-SLOTS on
1288 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1289 requested slot ordering.
1291 ** bug fix: parent thread now can be gc'ed even with a live
1293 ** bug fix: binding a special with PROGV to no value is not
1294 the same as that symbol not having been bound (thanks to
1296 ** bug fix: binding specials is thread safe (thanks to
1298 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1299 and SB-SPROF do not die with 'no handler for signal XX in
1300 interrupt_handle_now(..)' anymore
1301 ** bug fix: WITH-TIMEOUT works with multiple running threads
1302 * fixed some bugs revealed by Paul Dietz' test suite:
1303 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1304 the :method-class keyword argument.
1306 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1307 * new port: the Solaris operating system on x86 processors is now
1308 mostly supported, though some rough edges in the environment
1309 remain. (thanks to Daisuke Homma)
1310 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1311 space for its heap. (thanks to Thiemo Seufer)
1312 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1313 closures. (thanks to Thiemo Seufer)
1314 * minor incompatible change: eof selects abort in the debugger.
1315 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1316 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1318 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1319 deprecated, and will go away in a future revision of SBCL.
1320 * minor incompatible change: GC-ON and GC-OFF are no longer
1321 implemented with a counter, it does not matter how many times gc
1322 is switched on or off
1323 * bug fix: discriminating functions for generic function classes
1324 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1325 make invalid assumptions about method precedence order. (reported
1327 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1328 platforms. (thanks to Thiemo Seufer)
1329 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1330 * bug fix: correct pathname printing with printer escaping is on.
1331 (thanks to Kevin Reid)
1332 * bug fix: complex VOP definitions in "user-space" no longer trigger
1333 package locks. (reported by Zach Beane)
1334 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1335 for funcallable-instance functions, and is no different from
1337 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1338 characters in the current readtable. (reported by Nicholas Neuss)
1339 * bug fix: SUBTYPEP on various CONS types returns more a more
1340 accurate acknowledgment of its certainty.
1341 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1342 lists in some cases. This partially fixes bug 384.
1343 * flush all standard streams before prompting in the REPL and the
1345 * bug fix: signal handling and triggering gc do not conflict
1346 directly anymore, in particular a high frequency sb-sprof does
1347 not prevent gc from running
1348 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1349 approximation for timezone and DST information between the
1350 universal time epoch and the smallest negative 32-bit time_t.
1351 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1352 year 1899 so long as the encoded time is non-negative.
1353 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1354 the correct answer for non-constant rotate amounts when performing
1355 an inline 32-bit rotation.
1357 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1358 there is only one thread in the session
1359 ** bug fix: memory leak for streams created in one thread and
1360 written to in another
1361 ** bug fix: lockup when compiled with gcc4
1362 ** bug fix: race that allows the gc to be triggered when gc is
1364 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1365 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1367 ** bug fix: finished threads are gc'ed properly
1368 * fixed some bugs revealed by Paul Dietz' test suite:
1369 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1370 has arguments with a different set of applicable methods from
1371 the orignal arguments.
1372 ** The type error thrown by MAP now has a correct expected-type
1374 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1375 name a compiled function.
1376 ** Three MISC tests where a large bignum was improperly coerced to
1377 a float that couldn't represent that bignum during type
1378 derivation were fixed.
1379 ** SUBTYPEP can now handle types involving the negation of a
1380 list-form FUNCTION type.
1381 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1382 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1383 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1385 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1386 * New feature: Experimental support for bivalent streams: streams
1387 opened with :element-type :default now allow character and binary
1388 (unsigned-byte 8) I/O
1389 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1390 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1392 * bug fix: no more highly sporadic "couldn't check whether ~S is
1393 readable" when reading a stream and an interrupt hits in the middle
1394 of a select system call
1395 * compiler better recognizes complex arrays (reported by Eduardo
1397 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1398 for variables on SBCL built with linkage-tables. (reported by Luis
1400 * various error reporting improvements.
1401 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1402 (Thanks to Thiemo Seufer)
1403 * bug fix: nested reader invokations work correctly
1404 * bug fix: it is possible to have simultaneous references to foreign
1405 code and foreign data with the same name.
1407 ** added x86-64 support
1408 ** incompatible change: the threading api now works with thread
1409 objects instead of thread ids
1410 ** bug fix: threads are protected from signals and interruption when
1411 starting up or going down
1412 ** bug fix: a race where an exiting thread could lose its stack to gc
1413 ** bug fix: don't halt on infinite error in threads if possible
1414 ** fixed numerous gc deadlocks introduced in the pthread merge
1415 ** bug fix: fixed thread safety issues in read and print
1416 ** bug fix: debugger doesn't hang on session lock if interrupted at
1417 an inappropriate moment
1418 ** bug fix: run-program is now thread safe(r)
1419 ** bug fix: inner with-recursive-lock no longer releases the mutex
1420 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1421 * fixed some bugs revealed by Paul Dietz' test suite:
1422 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1423 EXPECTED-TYPE slots filled.
1424 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1426 ** MAKE-CONDITION accepts classes as type-designators.
1427 ** COMPILE may never return NIL.
1428 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1429 range before calling Unix time functions
1431 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1432 * numerous signal handling fixes to increase stability
1433 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1434 * minor incompatible change: we now correctly canonize default
1435 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1436 as per the MOP, rather than the historical (INITARG INITFUNCTION
1437 INITFORM). (reported by Bruno Haible)
1438 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1439 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1440 for more information.
1441 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1442 pathname is a directory pathname.
1443 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1444 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1446 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1447 :METACLASS argument in addition to a class name. (reported by
1448 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1449 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1450 (reported by Bruno Haible; patch from Gerd Moellmann)
1451 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1453 * bug fix: more cleanups to the floating point exception handling on
1454 x86-64 (thanks to James Knight)
1455 * bug fix: the compiler does not try to constant fold calls of
1456 COERCE and BIT-* functions when they return freshly constructed
1457 objects. (reported by Nikodemus Siivola and Paul Dietz)
1458 * optimization: improved the MIPS versions of generic (in the
1459 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1460 * optimization: direct conversion of (unsigned-byte 32) to floats on
1461 the PowerPC platform.
1462 * optimization: structure instances with raw slots now use less
1463 memory, and probably show better memory locality. (thanks to
1465 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1466 are treated as requests for stack allocation on the x86-64,
1467 Alpha-32, PPC and SPARC platforms.
1468 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1469 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1470 (thanks to Tony Martinez)
1472 ** gcing a dead thread can no longer lead to lockups
1473 ** threads block signals until they are set up properly
1474 ** errno is no longer shared by threads
1475 ** interrupt-thread restores the eflags register on x86
1476 ** fixed some lockups due to gc/thread interaction
1477 * fixed some bugs revealed by Paul Dietz' test suite:
1478 ** invalid dotted lists no longer raise a read error when
1479 *READ-SUPPRESS* is T
1480 ** signal an error if a symbol that names a declaration is used
1481 as the name of a type, or vice versa
1482 ** allow using the (declare (typespec var*)) abbreviation for
1483 (declare (type typespec var*)) with all type specifiers
1484 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1485 ** always return NIL from PPRINT-POP when OBJECT is NIL
1486 ** don't signal errors when pretty-printing malformed LABELS,
1487 FLET or MACROLET forms
1488 ** declarations in a DOLIST body are also in scope for the
1490 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1492 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1495 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1496 * fixed cross-compiler leakages that prevented building a 32-bit
1497 target with a 64-bit host compiler.
1498 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1499 opened with :IF-EXISTS :OVERWRITE.
1500 * fixed bug 281: error for an invalid qualifier in a short-form method
1501 combination method is not signalled until the faulty method is called.
1502 * bug fix: iteration variable type inferrer failed to deal with open
1503 intervals. (reported by Alan Shields)
1504 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1505 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1506 or more runtime options were provided to the sbcl binary.
1507 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1508 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1509 * optimization: there's now a fast-path for fixnum arguments in the
1510 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1511 * optimization: the code generated on x86-64 is more compact thanks
1512 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1513 * bug fix: floating-point exception handling now partly works on
1514 x86-64. (Thanks to James Knight)
1515 * improvement to the MIPS backend from Thiemo Seufer: C-style
1516 64-bit long long arguments and return values to alien functions
1518 * fixed some bugs revealed by Paul Dietz' test suite:
1519 ** the type-error signalled from WARN has a filled-in DATUM slot.
1520 ** the type-error required when a stream is not associated with
1521 a file has the stream as its datum.
1522 ** type-errors on single-floats on x86-64 no longer have
1523 :INVALID-OBJECT as the datum
1524 ** the type-errors signalled for invalid function names now have
1525 a correct expected type
1526 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1527 for structures defined with a :TYPE. Documentation strings for
1528 typed structures are no longer immediately discarded
1529 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1530 broadcast streams and synonym streams. FILE-LENGTH now also works
1531 on broadcast streams.
1533 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1534 * incompatible change: the --noprogrammer option, deprecated since
1535 version 0.7.5, has been removed. Please use the equivalent
1536 --disable-debugger option instead.
1537 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1539 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1540 inoperational for a while now) has been completely removed.
1541 * null lexical environments are now printed as #<NULL-LEXENV>,
1542 significantly reducing the amount of clutter in typical backtraces.
1543 * documentation on weak pointers, finalization, and after GC hooks
1544 has been added to the manual.
1545 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1546 as other specialized array types, is much faster. SUBSEQ and
1547 COPY-SEQ on such arrays have also been sped up.
1548 * optimization: EQL is now more efficient when at least other argument
1549 is known to be of type (OR FIXNUM (NOT NUMBER)).
1550 * fixed bug: the runtime is now less vulnerable to changes in the
1551 size of the SBCL object on OS X, and virtual memory is reserved for
1552 all spaces that need to be at a fixed address.
1553 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1554 * fixed bug: finalizers and after GC hooks that cause consing are now
1556 * fixed bug: compiler error messages and summaries are now printed to
1557 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1558 * fixed inference of the upper bound of an iteration variable.
1559 (reported by Rajat Datta).
1560 * fixed bug 211e: calling local functions with duplicated constant
1561 keyword argument no longer causes a bogus style warning about an
1563 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1564 ftype declaration to be disregarded. (reported by Dave Roberts)
1565 * fixed bug 373: caused by erronous compilation of references to alien
1566 variables in the runtime on ppc/darwin.
1567 * fixed bug 376: CONJUGATE type deriver.
1568 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1569 (reported by Baughn on #lisp)
1570 * a cross-compiler bug on non-x86 platforms has been identified and
1571 fixed. (thanks to Bruno Haible)
1572 * improvements to the MIPS runtime code for increased stability.
1573 (thanks to Thiemo Seufer)
1574 * increased the maximimum compact environment size to allow
1575 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1576 * partial workaround for bug 135: don't name the function we're
1577 calling for hairy cases of EVAL, so as not to accumulate one environment
1578 entry per call to EVAL. (reported by Kevin Reid)
1579 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1580 * optimization: type testing for non-vector arrays should be faster.
1581 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1583 * bug fix: setting 31st element of a bit vector to zero did not work
1585 * bug fix: redefining a class definition which failed due to a
1586 previous accessor / function clash now works (but see BUGS entry
1587 #380 for more problems in this area). (thanks to Zach Beane)
1588 * the long form of DEFINE-METHOD-COMBINATION disables method group
1589 checking when given a single method group with pattern *. (thanks
1591 * on x86 compiler supports stack allocation of results of simple
1592 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1593 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1594 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1595 * fixed some bugs related to Unicode integration:
1596 ** the restarts for recovering from input and output encoding
1597 errors only appear when there is in fact such an error to
1599 * fixed some bugs revealed by Paul Dietz' test suite:
1600 ** MISC.549 and similar: late transformation of unsafe type
1601 assertions into derived types caused unexpected code
1603 ** SCALE-FLOAT type deriver is less wrong.
1604 ** type derivers for EXP, LOG and similar functions compute result
1605 types for complex arguments better.
1606 ** (MISC.563) CONJUGATE type deriver works for very restricted
1608 ** out-of-line type testers for character strings are available.
1609 ** EQUAL compiler transform understands specialness of objects
1611 ** accessing double-floats stored on the stack now works on x86-64.
1612 ** debugger internals could sometimes create invalid lispobjs,
1613 resulting in GC crashes.
1614 ** MISC.548: type check weakening can convert required type into
1616 ** initialization forms for bindings are not in scope of free special
1619 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1620 * incompatible change: thread support for non-NPTL systems has
1621 been removed - locking is buggy and unreliable. A threaded
1622 SBCL build will now warn at startup and refuse to create
1623 new threads, unless futex support is detected in the kernel
1624 * incompatible change: the top level REPL now has only an ABORT
1625 restart associated with it, not TOPLEVEL and ABORT as it used to.
1626 TOP and TOPLEVEL are now available as debugger commands for
1627 returning to the top level.
1628 * incompatible change: forms evaluated in the REPL now use the
1629 global optimization policy.
1630 * incompatible change: user- and system-initialization files are
1631 no longer processed with LOAD, but by READ and EVAL; hence the
1632 global optimization policy, startup package, readtable, etc,
1634 * The .fasl file format number has been incremented because of
1635 various incompatible changes.
1636 * internal entry point details and argument counts no longer appear
1637 in backtraces unless explicitly requested by setting
1638 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1639 * built-in and standard functions no longer have names like "top
1640 level local call to FOO".
1641 * fixed bug 32: functions defined in non-null lexical environments
1642 now have more legible printed representation
1643 * fixed bug 33: functions defined in non-null lexical environemnts
1644 are now more amenable to inspection by INSPECT.
1645 * workaround for bug 354: XEPs no longer appear in backtraces unless
1646 explicitly requested.
1647 * fixed bug: receiving the signal which results from attempting to
1648 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1649 SIGBUS on other *BSDs) on architectures where the C stack is also
1650 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1651 to debugger confusion or wild instability. (reported by Cheuksan
1653 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1654 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1655 (reported by Lutz Euler)
1656 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1657 compiled code. (reported by Paul Dietz)
1658 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1659 specialized parameter to a method to something that is not TYPEP
1660 the specializer is now possible.
1661 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1662 face of package deletion.
1663 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1664 pathname. (reported by David Tolpin on c.l.l)
1665 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1666 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1667 STRING-STREAM and FILE-STREAM, respectively.
1668 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1669 than previously; in addition, its test suite is now run on build.
1670 (thanks to Luke Gorrie)
1671 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1672 * optimization: added a immediate representation for single-floats
1674 * fixed some bugs revealed by Paul Dietz' test suite:
1675 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1676 ** attempting to create a package with a colliding nickname causes
1677 correctable errors to be signalled.
1678 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1679 ** several x86-64 backend bugs related to sign-extension of immediate
1682 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1683 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1684 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1686 * fixed loading of multiply forward-referenced layouts.
1687 (thanks to Cheuksan Wang)
1688 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1689 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1690 (see COMPILE-FILE documentation for details of :PRINT option)
1691 * fixed bugs 19 and 317: fixed-format floating point printing is
1692 more accurate. This also fixes a bug reported by Adam Warner
1693 related to the ~@F format directive.
1694 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1696 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1697 dispatch table if the from-char is a dispatch macro character.
1698 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1699 by the wordsize no longer ignore the last word. (reported by Lutz
1701 * fixed bug in type checking of dynamic-extent variables. (reported
1703 * optimization: sequence traversal functions use their freedom to
1704 coerce function designators to functions.
1705 * optimization: code with many calls to CLOS methods specialized on
1706 CLOS classes has had redundant type checks removed.
1707 * optimization: added declarations to speed up operations that access
1708 the internal character database (for example STRING-UPCASE)
1709 * optimization: comparison operations between floats and sufficiently small
1710 fixnums no longer create extra rationals
1711 * fixed some bugs related to Unicode integration:
1712 ** portions of multibyte characters at the end of buffers for
1713 character-based file input are correctly transferred to the
1714 start of the buffer at the next read.
1715 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1716 passing it through to OPEN.
1717 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1718 argument given to internal calls to OPEN.
1719 ** the built-in comment readers (introduced by character sequences
1720 ";" and "#|") are more forgiving to encoding errors; they will
1721 STYLE-WARN and then attempt to resync the stream at a character
1722 boundary. (thanks to Teemu Kalvas)
1723 * fixed some bugs in the x86-64 port:
1724 ** Negative short int return values from c-calls are sign-extended
1726 ** The stack is aligned to 16-bytes for c-calls, as required by
1727 the ABI. (thanks to Cheuksan Wang)
1728 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1729 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1730 for enums. (thanks to Vincent Arkesteijn)
1731 ** Multiple small optimizations and bugfixes for floating point
1733 * fixed some bugs revealed by Paul Dietz' test suite:
1734 ** Space, Tab, Linefeed, Return and Page have the invalid
1735 secondary constituent character trait.
1736 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1738 ** WITH-INPUT-FROM-STRING should only update the index place on
1740 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1741 works more reliably.
1742 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1743 with one-dimensional arrays with fill pointers.
1744 ** TYPE-OF failed on a complex with an integer realpart and a
1746 ** compiler failure during type inference for the code of form
1747 (IF (EQL X (THE ...)) ...) (MISC.535).
1749 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1750 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1751 platform. The port supports 61-bit fixnums, large memory spaces
1752 and reloading shared object files.
1753 * enhancement: saving cores with foreign code loaded is now
1754 supported on ppc/Darwin in addition to the previously supported
1756 * enhancement: the statistical profiler now walks deeper into the
1757 call stack for more meaningful call-graphs and accrued time
1758 reports (x86/x86-64 only). It also now reports time spent in
1760 * enhancement: it is now possible to trace most individual methods
1761 of a generic function in addition to tracing the generic function
1763 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1765 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1766 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1767 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1768 produces an error. (thanks to Vincent Arkesteijn)
1769 * bug fix: NAMESTRING on pathnames with :WILD components in their
1770 directories works correctly. (thanks to Artem V. Andreev)
1771 * fixed bug 125: compiler preserves identity of closures. (reported
1773 * bug fixed: functions with &REST arguments sometimes failed with
1774 "Undefined function" when compiled with (DEBUG 3). (reported by
1776 * bug fix: overflow during compiling of setting element of a bit
1777 vector with constant index and value. (reported by Timmy Douglas)
1778 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1779 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1780 * on x86 compiler partially supports stack allocation of dynamic-extent
1782 * GO and RETURN-FROM do not check the extent of their exit points
1783 when compiled with SAFETY 0.
1784 * fixed some bugs related to Unicode integration:
1785 ** encoding and decoding errors are now much more robustly
1786 handled; it should now be possible to recover even from invalid
1787 input or output to the terminal. (thanks to Teemu Kalvas)
1788 ** provided a first cut at implementing STRING-TO-OCTETS and
1789 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1790 ** altered the SB-MD5 contributed module slightly, changing the
1791 interface just enough for it to be supportable for builds where
1792 lisp characters are not eight bits.
1793 * fixed some bugs revealed by Paul Dietz' test suite:
1794 ** the FORMATTER-generated functions for ~V[ conditionals require
1795 the correct number of arguments.
1796 ** READ-FROM-STRING returns the mandated second value when applied
1797 to displaced strings.
1798 ** the #\Rubout and #\Backspace characters are treated as invalid
1799 constituent characters by the tokenizer.
1801 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1802 * new feature: reloading changed shared object files with
1803 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1804 * new feature: references to foreign variables and functions
1805 can now be compiled and loaded before the corresponding shared
1806 object file is loaded, as long as the foreign definitions are
1807 available at runtime.
1808 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1809 supported. (thanks to Dan Debertin)
1810 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1811 just keywords. (thanks to Vincent Arkesteijn)
1812 * fixed bug #331: structure-class instances corresponding to
1813 DEFSTRUCT forms are now created eagerly.
1814 * fixed bug #345: backtraces from calls to undefined functions work
1815 on x86 as well. Related bug #61 is now also partially fixed on x86
1816 (backtraces from throws to unknown catch tags.)
1817 * bug fix: lambda-list parsing is now stricter vrt. order and number
1818 of lambda-list keywords.
1819 * bug fix: as specified by AMOP, an error is signalled if a
1820 class-option appears multiple times in a DEFCLASS form. (reported
1822 * bug fix: RANDOM can be compiled when the compiler derives the type
1823 of its numeric argument as a disjoint set of small integers.
1824 (reported by Paul Dietz)
1825 * bug fix: starting a core saved with shared objects loaded when
1826 those objects are not available no longer causes threaded SBCL to
1827 hang. (reported by Sean Ross)
1828 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1830 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1831 argument, which must always be NIL. (reported by Kalle Niemitalo)
1832 * bug fix: printing 1.0d+23 no longer results in an error.
1833 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1834 * bug fix: structure slot setters preserve evaluation order. (thanks
1836 * fixed some bugs related to Unicode integration:
1837 ** RUN-PROGRAM can allow its child to take input from a Lisp
1838 stream. (reported by Stefan Scholl)
1839 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1840 locales. (reported by Ken Causey)
1841 * fixed some bugs revealed by Paul Dietz' test suite:
1842 ** INCF, DECF and REMF evaluate their place form as specified in
1844 ** FORMATTER expands ~{ ~} iteration directives with V or #
1845 parameters correctly.
1846 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1847 consequent uses no arguments correctly.
1848 ** the system has a partial understanding of the (COMPLEX RATIO)
1850 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1853 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1854 * new feature: a build-time option (controlled by the :SB-UNICODE
1855 keyword feature, enabled by default) for building the system with
1856 support for the entire 21-bit character space defined by the
1858 * new feature: the system now has rudimentary external-format
1859 support; the primary user-visible change at this time is that
1860 characters with the high bit set (such as lower-case-e-acute) will
1861 print correctly to a terminal in a UTF-8 environment.
1862 * minor incompatible change: BASE-CHAR no longer names a class;
1863 however, CHARACTER continues to do so, as required by ANSI.
1864 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1865 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1866 has been moved to the SB-EXT package (temporarily re-exported from
1868 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1869 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1871 * fixed bug #351: better error-handlind and reporting for malformed
1873 * fixed bug #350: bignum-printing is now more memory-efficient,
1874 allowing printing of very large bignums, eg. (expt 2 10000000).
1875 (reported by Bruno Haible)
1876 * fixed bug #302: better primitive-type selection for intersection
1878 * fixed bug #308: non-graphic characters now all have names, as
1879 required. (reported by Bruno Haible)
1880 * bug fix: redefining a class with different superclasses now correctly
1881 removes it from the direct-subclasses of its previous superclasses.
1882 (reported by David Morse)
1883 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1884 new value now works. (reported by Bruno Haible)
1885 * bug fix: correct canonicalization of multiple non-standard slot
1886 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1887 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1888 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1889 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1890 now exists, an signals an error.
1891 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1892 during macroexpansion for non-iteration variables as well. (reported
1893 by Bruno Haible for CMUCL)
1894 * bug fix: Cyclic structures and unprintable objects in compiler
1895 messages no longer cause errors. (reported by Bruno Haible)
1896 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1897 and READ-FROM-STRING all now return a primary value of NIL if
1898 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1899 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1900 (reported by Bruno Haible for CMUCL)
1901 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1902 do not designate a condition. (reported by Bruno Haible for
1904 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1905 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1906 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1907 permitting resolution in favour of any of the conflicting symbols.
1908 (reported by Bruno Haible for CMUCL)
1909 * bug fix: EQUAL compiler optimizations is less aggressive on
1910 strings which can potentially compare true despite having distinct
1911 specialized array element types.
1912 * bug fix: unit enumerations can be defined without dividing by
1913 zero. (thanks to Vincent Arkesteijn)
1914 * FORMAT compile-time argument count checking has been enhanced.
1915 (report from Bruno Haible for CMUCL)
1916 * a partial workaround for the bug 262: the compiler does not try to
1917 inline-expand a local function doing RETURN-FROM from a deleted
1918 BLOCK. (thanks to Peter Denno for the bug report and to David
1919 Wragg for the simple test case)
1920 * fixed some bugs revealed by Paul Dietz' test suite:
1921 ** RENAME-PACKAGE allows all package designators as new package
1923 ** constraint propagation and lambda variable substitution are
1924 more cautious in dealing with partially deleted code.
1925 ** compiler sometimes lost reoptimization passes.
1926 ** CERROR, given a condition as condition designator, passes its
1927 remaining arguments to the continue format control without
1929 ** Case-altering FORMAT directives work correctly on non-ASCII
1931 ** The REAL type specifier handles bounds outside the floating
1932 point ranges without signalling FLOATING-POINT-OVERFLOW.
1933 ** Functions with IR1-transformations can create intercomponent
1934 references to global functions.
1935 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1937 ** FORMAT ~R treats a nil value for its first parameter correctly.
1939 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1940 * enhancement: saving cores with foreign code loaded is now
1941 supported on x86/NetBSD and sparc/Linux in addition to the previously
1942 supported platforms.
1943 * bug fix: on some platforms repeated installations caused multiple
1944 copies of HTML documentation to be installed -- should not happen
1945 any more. (reported by Stefan Scholl)
1946 * bug fix: parsing self-recursive alien record types multiple times
1947 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1948 original patch by Helmut Eller for CMUCL)
1949 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1950 (thanks to Richard Kreuter)
1951 * bug fix: defining classes whose accessors are methods on existing
1952 generic functions in other (locked) packages no longer signals
1953 bogus package lock violations. (reported by François-René Rideau)
1954 * bug fix: special variables as DEFMETHOD parameters no longer have
1955 associated bogus type declarations. (reported by David Wragg and
1957 * bug fix: read-write consistency on streams of element-type
1958 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1959 * bug fix: redefiniton of the only method of a generic function with
1960 no DEFGENERIC no longer emits a full WARNING. In addition,
1961 redefinition of generic functions with no DEFGENERIC to an
1962 incompatible lambda list now signals an error. (thanks to Zach
1964 * bug fix: DEFGENERIC now works even when there's a function of the
1965 same name in an enclosing lexical environment. (thanks to Zach
1967 * fixed compiler failure, caused by instrumenting code during
1968 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1969 * optimization: added loop analysis and improved register allocation
1970 * fixed some bugs revealed by Paul Dietz' test suite:
1971 ** POSITION on displaced vectors with non-zero displacement
1972 returns the right answer.
1973 ** (SIMPLE-STRING) is a valid type specifier for sequence
1975 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1977 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1978 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1980 ** The justification version of the FORMAT ~< directive treats
1981 non-zero minpad parameter correctly.
1983 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1984 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1985 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1986 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1987 the supported interface.
1988 * new feature: Single-stepping of code compiled with DEBUG 2 or
1989 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1990 * new feature: saving cores with foreign code loaded is now
1991 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1992 Timothy Moore's work for CMUCL)
1993 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1994 parameters to * instead of NIL if no initform is supplied.
1995 (reported by Johan Bockgaard)
1996 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1997 correctly when FUNCALL appears as the car of the form. Note:
1998 despite this FUNCALL forms are not currently subject to
1999 compiler-macro expansion. (port of Raymond Toy's fix for the
2000 same from CMUCL, reported by Johan Bockgaard)
2001 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2002 (thanks for Teemu Kalvas)
2003 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2004 case instead of terminating the iteration (thanks for Julian
2005 Squires, Sean Champ and Raymond Toy)
2006 * bug fix: incorrect expansion of defgeneric that caused a style
2007 warning. (thanks for Zach Beane)
2008 * bug fix: slot accessor effective method computation works properly
2009 for classes with multiple non-standard applicable methods on
2010 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2011 * on x86 compiler supports stack allocation of results of LIST and
2012 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2013 CMUCL implementation by Gerd Moellmann)
2014 * fixed some bugs revealed by Paul Dietz' test suite:
2015 ** FORMAT strings with both the ~<~:;~> form of the justification
2016 directive and pretty-printing directives cause an error.
2018 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2019 * incompatible change: the internal functions
2020 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2021 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2022 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2023 instead of the old functions.
2024 * new feature: on platforms where "dladdr" is available foreign
2025 function names now appear in backtraces. (based on Helmut Eller's
2027 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2028 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2030 * documentation: ASDF manual is now distributed with SBCL.
2031 * bug fix: SBCL can now load its contributed modules with REQUIRE
2032 even if the system-provided entries have been removed from
2033 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2035 * bug fix: backtraces involving undefined functions or assembly
2036 routines are more informative. (thanks to Brian Downing)
2037 * bug fix: mutually referent alien structures now work correctly.
2038 (reported by Rick Taube)
2039 * bug fix: structures defined by WITH-ALIEN can be referred to
2040 within other definitions in the same WITH-ALIEN.
2041 * bug fix: division operators (MOD, TRUNCATE and the like) with
2042 constant zero divisors and integer dividends no longer generate
2044 * bug fix: provide default methods for INPUT-STREAM-P and
2045 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2046 * bug fix: improve the detection and resolution of MOP metacycles
2047 (where effective method computation depends on the generic function
2048 having its effective method computed). (reported by Bruno Haible)
2049 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2050 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2051 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2052 * bug fix: pathnames with relative directory components can be
2053 represented relative to default pathnames.
2054 * optimization: in taking the GCD of bignums, reduce the two bignums
2055 to approximately the same size (using Euclid's algorithm) before
2056 applying the more sophisticated binary GCD. (thanks to Juho
2058 * optimization: COUNT on bitvectors now operates word-at-a-time.
2059 * optimization: ASH with a positive, but not necessarily constant,
2060 (leftwards) shift, when in a modular context, is compiled to a
2062 * fixed some bugs revealed by Paul Dietz' test suite:
2063 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2064 if the corresponding argument is NIL.
2065 ** FORMAT directives accepting a minpad parameter treat negative
2067 ** literal commas as character parameters to FORMAT directives are
2069 ** literal spaces directly after ~<Newline> directives within a
2070 format-logical-block (~:< ~@:>) do not induce :FILL-style
2071 conditional newlines.
2072 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2073 as specified: it no longer includes conditional newlines).
2074 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2076 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2077 :PER-LINE-PREFIX argument does not evaluate to a string.
2079 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2080 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2081 the manual for details; for now, package locks can be disabled by
2082 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2083 if no major problems are found then it is likely that they will be
2084 compiled in unconditionally.
2085 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2086 unsupported operators on all platforms. To load a shared library
2087 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2088 object file, link it into a shared library outside of SBCL and
2089 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2091 * bug workaround: ROOM T and the GC were not working together
2092 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2093 reporting facility aren't preserved. That reporting has been
2094 disabled, so now until and unless someone figures out how to make it
2095 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2096 * minor incompatible change: as threatened around sbcl-0.8.0, the
2097 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2098 The symbols are also exported from SB-PCL for backwards
2099 compatibility, but more so than before SB-PCL should be treated as
2100 an implementation-internal package.
2101 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2103 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2104 It is known as of this release not to work on the Alpha, however.
2105 * fixed bug #167: errors signalled due to illegal syntax in method
2106 bodies are now more legible.
2107 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2108 designators and can hence be used with TYPEP.
2109 * fixed bug #333: CHECK-TYPE now ensures that the type error
2110 signalled, if any, has the right object to be accessed by
2111 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2112 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2113 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2115 * fixed bug #334: programmatic addition of slots using specialized
2116 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2117 and :ALLOCATION :CLASS slots.
2118 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2119 float exponents. (rereported by Peter Seibel)
2120 * fixed a bug: #\Space (and other whitespace characters) are no
2121 longer considered to be macro characters in standard syntax by
2122 GET-MACRO-CHARACTER.
2123 * fixed bug: initialization of condition class metaobjects no longer
2124 causes an instance of the condition to be created. (reported by
2126 * fixed bug: it is now possible to have slots such that
2127 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2128 description is neither :INSTANCE nor :CLASS.
2129 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2130 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2131 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2132 non-standard SLOT-DEFINITION-ALLOCATION values.
2133 * fixed bugs: various race conditions handling exiting threads.
2134 CL-PPCRE's thread torture test now passes.
2135 * fixed arguably-a-bug: GC time proportional to number of threads in
2136 system even when most of them are idle
2137 * optimization: improved performance of BIT and SBIT on bit-vectors.
2138 * .fasl file incompatibility: The fasl file version number has
2139 been incremented because of changes associated with package locks.
2141 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2142 * minor incompatible change: the system no longer provides
2143 optimization hints (conditions which are TYPEP
2144 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2145 mode; these hints are still emitted when higher SPEED optimization
2147 * new contrib module: a sampling profiler (profiling by statistical
2148 sampling, rather than by instrumenting functions) is available as
2149 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2150 * the behaviour of the standard function ED is now customizeable by
2151 third parties through a hook variable: see ED's documentation
2152 string for information on the protocol.
2153 * the compiler no longer emits efficiency notes for (FUNCALL X)
2154 when the type of X is uncertain under default optimization
2156 * fixed bug 276: mutating a binding of a specialized parameter to a
2157 method to something that is not TYPEP the specializer is now
2159 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2160 exhibit the required behaviour on the x86 platform. (thanks to
2161 Peter van Eynde, Eric Marsden and Bruno Haible)
2162 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2163 even for difficult arguments. (reported by Peter Graves)
2164 * fixed bug 141a: the backquote printer now descends quoted
2166 * fixed another bug in backquote printing: no more destructive
2167 modification of the form's list structure. (reported by Brian
2169 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2170 move between its address being taken and the call to
2171 interrupt_thread, fixing a crashing race condition.
2172 * the SB-POSIX contrib implementation has been adjusted so that it
2173 no longer exhibits ridiculously poor performance when constructing
2174 instances corresponding to C structs.
2176 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2177 * minor incompatible change: the sb-grovel contrib now treats C
2178 structures as alien (in the sense of SB-ALIEN) objects rather than
2179 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2180 has implications for memory management of client code
2181 (sb-grovel-returned objects must now be manually managed) and for
2182 type safety (alien objects now have full types).
2183 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2184 used to control emission of compiler diagnostics, rather than the
2185 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2186 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2187 quality should be considered deprecated.
2188 * install.sh now installs the user manual as well
2189 * (not quite a new documentable feature, but worth considering in
2190 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2191 beginnings of a semantically meaningful condition hierarchy is
2192 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2194 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2195 designator as the defaults argument.
2196 * fixed bug: Displaced arrays whose displaced-to array has become
2197 too small now cause ARRAY-DIMENSION to signal an error, providing
2198 for safer bounds-checking. (reported by Bruno Haible)
2199 * fixed bug: DEFCLASS slot definitions with identical :READER and
2200 :WRITER names now signal a reasonable error. (reported by Thomas
2202 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2204 * fixed bug: Invalid slot specification errors now print correctly.
2205 (thanks to Zach Beane)
2206 * fixed bug 320: Shared to local slot value transfers in class
2207 redefinitions now happen corrently from superclasses as
2208 well. (reported by Bruno Haible)
2209 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2211 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2212 improper lists correctly. (reported by Bruno Haible)
2213 * fixed bug 313: source-transform for <fun-name> was erroneously
2214 applied to a call of a value of a variable with name <fun-name>.
2215 (reported by Antonio Menezes Leitao)
2216 * fixed bug 307: The obsolete instance protocol ensures that
2217 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2218 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2219 remove dead unknown-values globs from the middle of the stack.
2220 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2221 easier to resume long computations after using *BREAK-ON-SIGNALS*
2222 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2223 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2224 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2225 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2226 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2227 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2229 * fixed a (fairly theoretical) bug in string printing: if
2230 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2231 does not have array-element-type equal to the most general string
2233 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2234 function name. (thanks to Nikodemus Siivola)
2235 * fixed bug: compile-time format string checker failed on
2236 non-closed ~{. (reported by Thomas F Burdick)
2237 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2238 don't warn on legal loop code involving more than one aggregate
2239 boolean. (thanks to Nikodemus Siivola)
2240 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2241 in keyword position to MAKE-PACKAGE was not being reported as
2243 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2244 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2246 * fixed bugs 280 and 312: the checking for multiple definitions in a
2247 file is less likely to become confused by uses of inline
2249 * fixed bug: the #S reader macro performs the keyword coercion
2250 specified for slot names. (reported by Kalle Niemitalo)
2251 * fixed bug: lambda lists may contain symbols whose names start with
2252 & but are not lambda-list-keywords; their occurrence triggers a
2254 * fixed bug 321: define-method-combination argument lambda lists do
2255 not cause invalid code to be generated when &optional or &aux
2256 variables have default values. (reported by Bruno Haible)
2257 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2258 have CLOS classes; this appears also to have fixed reported
2259 instability in stack exhaustion detection.
2260 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2261 MUFFLE-WARNING when no associated restart is present is now
2263 * optimization: rearranged the expansion of various defining macros
2264 so that each expands into only one top-level form in a
2265 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2267 * optimization: used a previously little-used slot in symbols to
2268 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2270 * fixed some bugs revealed by Paul Dietz' test suite:
2271 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2273 ** Fixed an optimization bug related to inheritance of initforms
2274 from local to shared slots.
2275 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2276 ** CAST optimizer forgot to flush argument derived type.
2277 ** print/read consistency on floats is now orders of magnitude
2278 more likely. (thanks also to Bruno Haible for a similar report
2280 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2281 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2282 for objects of type REAL. Make it so.
2283 ** SXHASH is specified (infelicitously) to respect similarity,
2284 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2285 it so. (thanks to Markus Ziegler)
2286 ** on the Alpha, the compiler succeeds in compiling functions
2287 returning a known number of arguments greater than 63.
2288 ** fixed handling of invalid NIL arguments in keyword position
2290 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2292 ** provided a readably-printable representation for RANDOM-STATE
2294 ** ensured that pathnames, where they have a namestring, always
2295 print using #P"..." syntax.
2297 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2298 * Support for the forthcoming 2.0 version of the NetBSD kernel
2299 running on x86 hardware has been added. (thanks to Perry
2300 E. Metzger most immediately, and others for their past work)
2301 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2302 current release version; SBCL's OpenBSD support had been broken
2303 since about the time of OpenBSD's switch to ELF binary format.)
2304 * [placeholder for DX summary]
2305 ** user code with &REST lists declared dynamic-extent, under high
2306 speed or space and low safety and debug optimization policy.
2307 * The manual has been converted to Texinfo format and the debugger
2308 chapter from the cmucl manual has been added.
2309 * A facility has been added to extract documentation strings from
2310 sbcl and store them as Texinfo-formatted snippets for inclusion in
2311 the manual (via Texinfo's @include directive)
2312 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2313 the test case to Dave Roberts)
2314 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2315 pointers. (reported by Sean Ross)
2316 * bug fix: PROFILE output is printed nicely even for large numerical
2317 values. (thanks to Zach Beane)
2318 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2319 greater than 32 handle EOF correctly.
2320 * bug fix: on X86 an immediate argument of the IMUL instruction is
2321 correctly printed in disassembly. (thanks to Lutz Euler)
2322 * bug fix: class slots in redefined classes preserve their old
2323 values. (thanks to Bruno Haible and Nikodemus Siivola)
2324 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2325 succeeds. (reported by Marco Baringer)
2326 * fixed some bugs revealed by Paul Dietz' test suite:
2327 ** READ-SEQUENCE now works on ECHO-STREAMs.
2328 ** RATIONALIZE works more according to its specification. (thanks
2331 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2332 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2333 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2334 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2335 should matter to you only if you rebind the printer control
2336 variables and then find you want different bindings in the
2337 debugger than in the ordinary execution of your program.)
2338 * The runtime build system has been tweaked to support building
2339 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2340 assembler and linker. (thanks to Nikodemus Siivola)
2341 * Unbound, undefined, undeclared variables now trigger full
2342 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2343 more often programmer error than deliberate exploitation of undefined
2345 * optimization: the hash algorithm for strings has changed to one
2346 that is less vulnerable to spurious collisions. (thanks to Juho
2348 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2349 needless bounds checking. (thanks to Juho Snellman)
2350 * optimization: implemented multiplication as a modular
2351 (UNSIGNED-BYTE 32) operation on the PPC backend.
2352 * fixed some bugs revealed by Paul Dietz' test suite:
2353 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2355 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2356 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2357 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2359 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2361 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2363 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2364 their output stream on EOF from read.
2365 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2366 have been read to end-of-file.
2367 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2369 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2370 description of determination of which consecutive characters
2372 ** Printing the "Space" character with escaping on now yields "#\\ ",
2373 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2374 ** Reading floating-point numbers with *READ-BASE* set to a number
2375 less than 10 works correctly.
2376 ** Reading floating-point numbers with *READ-BASE* set to a number
2377 more than 10 works correctly.
2378 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2379 the readtable currently in effect.
2381 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2382 * minor incompatible change: parsing of namestrings on a physical
2383 (Unix) host has changed; numbers after the final #\. in a
2384 namestring are no longer interpreted as a version field. This is
2385 intented to be largely invisible to the user, except that the
2386 meaning of the namestring "*.*.*" has changed: it now refers to a
2387 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2388 should usually be replaced by
2389 (make-pathname :name :wild :type :wild :version :wild)
2390 with the added benefit that this is more likely to be portable.
2391 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2392 option to OPEN now signals an error if the file being opened
2393 exists; this may have an impact on existing code.
2394 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2395 signals received, on the PowerPC platforms (both Linux and
2396 Darwin). (thanks to Pierre Mai for pointing out the location of
2398 * several fixes on OS X: The system now builds and runs cleanly on
2399 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2400 (thanks to Brian Mastenbrook)
2401 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2402 second-resolution: integer multiples of 1/3600 between -24 and 24.
2403 (thanks to Vincent Arkesteijn)
2404 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2405 type when called with 1 argument; PEEK-CHAR checked type of
2406 PEEK-TYPE only after having read first character from a
2407 stream. (reported by Peter Graves)
2408 * bug fix: the garbage collector now has much better locality
2409 behaviour, and in particular no longer treats all memory as being
2410 exhausted when many small objects point to each other in a deeply
2412 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2413 recognized as being TYPEP their class.
2414 * bug fix: the PUSHNEW documentation string has been corrected.
2415 (thanks to Vincent Arkesteijn)
2416 * bug fix: defaulting of the value for the last of an atypically
2417 large number of multiple values being bound was not being
2418 performed correctly on the Alpha or PPC platforms
2419 * optimization: implemented multiplication as a modular
2420 (UNSIGNED-BYTE 32) operation on the x86 backend.
2421 * optimization: SEARCH on simple-base-strings can now be open-coded.
2422 (see also contrib/compiler-extras.lisp for inspiration for
2423 teaching the compiler about the Boyer-Moore algorithm).
2424 * value, returned by MAX (and MIN) called with several EQUALP, but
2425 not EQL, arguments now does not depend on compiler settings.
2426 * fixed some bugs revealed by Paul Dietz' test suite:
2427 ** in stack analysis liveness information is propagated from
2428 non-local entry points.
2429 ** pathwise CAST removing failed when the CAST node did not start
2431 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2432 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2434 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2435 host is already defined.
2436 ** RENAME-FILE works on streams instead of signalling an internal
2438 ** PEEK-CHAR uses the current readtable when determining whether
2439 or not a character is whitespace.
2440 ** MERGE-PATHNAMES handles the case when the pathname does not
2441 specify a name while the default-pathname specifies a version.
2442 ** Pathnames now stand a better chance of respecting print/read
2444 ** Attempting to use standardized file system operators with a
2445 pathname with invalid :DIRECTORY components signals a
2447 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2449 ** DIRECTORY on logical pathnames is more correct.
2450 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2451 signal a TYPE-ERROR if their argument is not a stream.
2452 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2453 designator argument does not designate a stream.
2454 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2455 examining the synonym.
2456 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2458 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2459 element-type larger than ([UN]SIGNED-BYTE 32).
2461 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2462 * When built with the :SB-FUTEX feature, threaded builds now take
2463 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2464 for faster/more reliable mutex and condition variable support.
2465 * Incompatible change (but one you probably shouldn't have been using
2466 anyway): the interface and code for arbitrating between multiple
2467 threads in the same user session has been redesigned.
2468 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2469 error when called without an explicit environment argument.
2470 (thanks to Nikodemus Siivola)
2471 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2472 confused about their position. (thanks to Adam Warner and Gerd
2474 * bug fix: Pretty printing backquoted forms with unquotations in the
2475 argument list position of various code constructs such as LAMBDA
2476 now works correctly. (reported by Paul Dietz)
2477 * bug fix: Pretty printing unquotations no longer loses all
2478 stream position information.
2479 * optimization: performance of string output streams is now less
2480 poor for multiple small sequence writes.
2481 * optimization: performance of CSUBTYPEP in the presence of complex
2482 expressions involving CONS and NOT many times has been improved.
2483 (reported by Paul Dietz)
2484 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2486 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2487 streams for the REPL, for the debugger, and so on. (thanks to
2489 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2490 * fixed some bugs revealed by Paul Dietz' test suite:
2491 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2492 is ignored if it is too small, rather than propagating through
2493 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2494 ** extremely complex negations of CONS types were not being
2495 sufficiently canonicalized, leading to inconsistencies in
2497 ** VALUES tranformer lost derived type.
2499 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2500 * fixed a bootstrapping bug: the build process no longer assumes
2501 that the various BOOLE-related constants have the same value in
2502 host and target lisps. (noted by Paul Dietz' test suite on an
2503 SBCL binary built from CLISP)
2504 * The system can now be dynamically linked on the MIPS platform,
2505 which enables dynamic loading of foreign code from Lisp. (thanks
2506 to Ralf Baechle for discussions on the MIPS ABI)
2507 * The system now records debugging information for its own source
2508 files in a filesystem-position-independent manner, relative to
2509 the "SYS" logical host.
2510 * fixed a compiler bug: MV-LET convertion did not check references
2511 to the "max args" entry point. (reported by Brian Downing)
2512 * tweaked disassembly notes to be less confident about proclaiming
2513 some instruction as an LRA. (thanks to Brian Downing)
2514 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2515 now each have their own history, command character, and other
2516 characteristics. (thanks to David Lichteblau)
2517 * fixed some bugs revealed by Paul Dietz' test suite:
2518 ** compiler failure in compiling LOGAND expressions including a
2520 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2521 shift greater than 32.
2522 ** FLUSH-DEST did not mark blocks for type check regeneration.
2523 ** HANDLER-CASE failed to accept declarations in handler clauses
2524 in some circumstances.
2526 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2527 * New code in contrib/sb-introspect (still probably not entirely
2528 stable yet) provides some support for smart Lisp development
2529 environments like SLIME.
2530 * The conditions signalled for errors occurring when loading .fasl
2531 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2532 in a way which should help ASDF recover gracefully.
2533 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2534 stuff has been cleaned up. If you code contrib/ stuff, this might
2535 affect you, and you can look at contrib/README, contrib/STANDARDS,
2536 and/or the 0.8.4.27 diff to check.
2537 * In full calls the compiler now does not generate checks for declared
2538 argument types for all arguments.
2539 * various threading fixes
2540 ** and some experimental patches which didn't make it into
2541 the main tree for this release, but which are shipped in
2542 contrib/experimental-thread.patch as a possible fix for some
2543 failures (deadlock, spinning...) in GC-intensive multithreaded
2545 * fixed PPC build problem (source code incompatibility of different
2546 library versions): added offsetof() hackery which attempts to divine
2547 where glibc maintainers put uc_mcontext today
2548 * fixed bug 282: compiler does not trust type assertions while passing
2549 arguments to a full call.
2550 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2551 &OPTIONAL VALUES type parameter.
2552 * fix bug 214: algorithm for noting rejected templates is now more
2553 similar to that of template seletion. (also reported by rydis on
2555 * fixed bug 141b: printing backquoted information readably and prettily
2556 inserts a space where necessary.
2557 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2558 (CHARACTER 10) are now reported as errors, rather than propagated
2559 as unknown types. (reported by piso on #lisp)
2560 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2561 with values NIL and :ERROR. (thanks to Milan Zamazal)
2562 * fixed bug 191c: CLOS now does proper keyword argument checking as
2563 described in CLHS 7.6.5 and 7.6.5.1.
2564 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2565 longer raise an error; further, using a list as a for-as-arithmetic
2566 counter now raises a meaningful error.
2567 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2568 now understood by sequence creation functions such as MAKE-SEQUENCE
2570 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2571 a STRING-INPUT-STREAM.
2572 * compiler enhancement: SIGNUM is now better able to derive the type
2574 * type declarations inside WITH-SLOTS are checked. (reported by
2576 * fixed some bugs revealed by Paul Dietz' test suite:
2577 ** incorrect optimization of TRUNCATE for a positive first
2578 argument and negative second.
2579 ** compiler failure in let-convertion during flushing dead code.
2580 ** compiler failure while deriving type of TRUNCATE on an
2581 interval, containing 0.
2582 ** ASH of a negative bignum by a negative bignum count now returns
2584 ** intersection of CONS types now canonicalizes properly, fixing
2585 inconsistencies in SUBTYPEP.
2587 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2588 * incompatible change: The --disable-debugger command line
2589 option now clobbers the debugger at a more fundamental
2590 level, by redefining #'INVOKE-DEBUGGER instead of by
2591 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2592 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2593 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2594 enter the debugger REPL and then suffer recursive errors
2595 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2596 while under the new system, BREAK in --disable-debugger mode
2597 terminates the system just as an unhandled error would.
2598 * fixed compiler performance when processing loops with a step >1;
2599 * bug fix: DOCUMENTATION now retrieves generic function
2600 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2601 support has been systematized, and now supports the methods
2602 specified by ANSI, along with a default method and a method for
2603 slot documentation. (reported by Nathan Froyd)
2604 * bug fix: effective methods associated with a generic function are
2605 no longer cached over a change of that generic function's method
2606 combination. (reported by Andreas Fuchs)
2607 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2608 names a non-existent directory. (thanks to Andreas Fuchs)
2609 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2610 the PPC platform, lead to stack corruption; this has been fixed.
2611 (reported by Rainer Joswig)
2612 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2613 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2614 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2615 arithmetic in general, is now much more reliable on the PPC
2617 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2618 platform now returns the right answer.
2619 * optimization: restored some effective method precomputation in
2620 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2621 precomputation is now tunable.
2622 * optimization: compiler-internal data structure use has been
2623 reviewed, and changes have been made that should improve the
2624 performance of the compiler by about 20%.
2625 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2626 simple-base-strings and simple-bit-vectors is improved.
2627 * optimization: the optimization of 32-bit logical and arithmetic
2628 functions introduced in version 0.8.3 on the x86 has been
2629 implemented on the mips, ppc and sparc platforms; an
2630 implementation of the same facility, but for 64-bit arithmetic,
2631 has been added for the alpha.
2632 * microoptimization: the compiler is better able to make use of the
2633 x86 LEA instruction for multiplication by constants.
2634 * bug fix: in some situations compiler did not report usage of
2635 generic arithmetic in (SPEED 3) policy.
2636 * bug 145b fix: compiler used wrong type specifier while converting
2637 MEMBER-types to numeric.
2638 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2640 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2641 index argument now works properly on the Alpha platform.
2642 * bug fix: floating point exception treatment on the Alpha platform
2644 * bug fix: FILE-POSITION works much better on string input and
2645 output streams. (thanks to Nikodemus Siivola)
2646 * bug fix: many threading/garbage collection symptoms sorted.
2647 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2648 might be pseudo-atomic.
2649 * internal change: Stopping for GC is now done with signals not
2650 ptrace. GC is now done in whichever thread wanted it, instead of
2652 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2654 * bug fix: result form in DO is not contained in the implicit
2656 * incompatible change: ICR structure is changed; the value part of
2657 CONTINUATION is now called LVAR; corresponding functions are
2658 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2659 * added type deriver for ISQRT (thanks to Robert E. Brown).
2660 * bug fix: better support for loading from the command line when an
2661 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2663 * fixed some bugs revealed by Paul Dietz' test suite:
2664 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2665 ** ROUND and FROUND now give the right answer when given very
2666 small float arguments.
2667 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2669 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2670 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2671 ** LCM should return a non-negative integer.
2672 ** PARSE-INTEGER returned the index of a terminator instead of the
2673 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2674 ** PARSE-INTEGER returned an incorrect index being applied to a
2676 ** LCM with two arguments of 0 returns 0 rather than signalling
2678 ** unsigned addition of a 32-bit constant with the high bit set no
2679 longer causes an internal compiler error on the x86.
2680 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2681 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2682 with negative last argument.
2683 ** byte specifiers with zero size and position no longer cause
2684 an error during type derivation.
2685 ** bignum multiplication on the Alpha platform now returns the
2687 * porting: The system now builds on SuSE AMD64, although it still
2688 generates a 32-bit binary.
2689 * .fasl file incompatibility: The fasl file version number has
2690 been incremented (because of the changes to internal compiler
2691 data structures referred to above).
2693 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2694 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2695 more accurately, on the Darwin kernel running on PowerPC hardware.
2696 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2697 * Compiler code deletion notes now signal a condition of type
2698 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2699 an associated MUFFLE-WARNING restart.
2700 * The compiler now performs limited argument count validation of
2701 constant format strings in FORMAT, and where appropriate in ERROR,
2702 CERROR and WARN. (thanks to Gerd Moellmann)
2703 * New ASDF-INSTALL contrib can be used for automatic download and
2704 installation of third-party Lisp code from CCLAN or other sites
2706 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2707 which forces another thread to execute a function supplied by the
2709 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2710 now accept and act upon their :ELEMENT-TYPE keyword argument.
2711 (reported by Martin Atzmueller, Edi Weitz)
2712 * bug fix: FILE-POSITION now accepts position designators up to
2713 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2714 is the greater. (thanks to Patrik Nordebo)
2715 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2716 Kalle Olavi Niemitalo)
2717 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2718 printable. (reported by Eric Marsden)
2719 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2720 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2721 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2722 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2723 (thanks to Stig Sandoe)
2724 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2725 UNREAD-CHAR now correctly includes the unread character in the
2726 target sequence. (thanks to Gerd Moellmann)
2727 * bug fix in threaded builds: the system can now be suspended and
2728 resumed by shell job control with minimal disruption.
2729 * bug fixes in times and timezones >2038AD
2730 * better handling of "where is GNU make?" problem in build scripts
2731 (thanks to Nikodemus Siivola)
2732 * new optimization: inside a named function any reference to a
2733 function with the same name is considered to be a self-reference;
2734 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2735 optimization quality.
2736 * new optimization on x86: logical functions and + now have
2737 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2738 used when the result is truncated to 32 bits.
2739 * VALUES declaration is partially enabled.
2740 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2741 * fixed some bugs revealed by Paul Dietz' test suite:
2742 ** The system now obeys the constraint imposed by
2743 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2744 types form a lattice under type intersection.
2745 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2746 ** ASSOC now ignores NIL elements in an alist.
2747 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2748 and (1+ MOST-POSITIVE-FIXNUM) answers.
2749 ** The addition of a method with invalid qualifiers to a generic
2750 function does not cause an error to be signalled immediately;
2751 a warning is signalled, and the error is generated only on
2752 calling the generic function.
2753 * changed .fasl file version number, in part to add type codes for
2754 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2755 obscure ANSI requirements
2757 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2758 * fixed bug 148: failure to inline-expand a local function left
2759 garbage, confusing the compiler.
2760 * fixed bugs 3cd: structure slot readers perform type check if the
2761 slot can have an invalid value (i.e. it is either not initialized
2762 or can be written with a less specific slot writer).
2763 * bug fix: the compiler now traps array references to elements off
2764 the end of an array; previously, the bounds checking in some
2765 circumstances could go off-by-one.
2766 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2768 * type declarations for array element types now obey the description
2769 on the CLHS page "Declaration TYPE", as per discussions on
2770 sbcl-help around 2003-05-08. This means that a declaration
2771 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2772 declaration, all references to BAR will be asserted or assumed
2773 (with THE, so dependent on compiler policy) to involve objects of
2774 type FOO. Note that no such declaration is implied in
2775 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2776 * declared types of functions from the "Conditions"
2777 chapter. (reported by Paul Dietz)
2778 * bug fix: CERROR accepts a function as its first argument.
2779 * bug fix: NTH an NTHCDR accept a bignum as index
2780 arguments. (reported by Adam Warner)
2781 * optimization: character compare routines now optimize comparing
2782 against a constant character. (reported by Gilbert Baumann)
2783 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2784 argument now works properly on the MIPS platform.
2785 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2786 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2787 declared to have a functional type, does not cause an error
2789 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2790 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2791 * fixed bug: if last continuation of a deleted block has a
2792 destination, this destination should be deleted too. (reported by
2794 * fixed a bug in the bootstrap process: the host compiler's values
2795 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2796 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2797 test case from Patrik Nordebo)
2798 * improved the ability of the disassembler on the PPC platform to
2799 provide helpful disassembly notes.
2800 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2801 the class in more cases than previously.
2802 * bug fix: FILE-POSITION now understands :START and :END for
2803 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2804 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2805 8) data. (thanks to David Lichteblau)
2806 * bug fix: it is possible to add a method to a generic function
2807 without lambda list.
2808 * bug fix: reader failed to signal END-OF-FILE inside an
2809 object representation. (reported by Nikodemus Siivola)
2810 * fixed some bugs revealed by Paul Dietz' test suite:
2811 ** LAST and [N]BUTLAST should accept a bignum.
2812 ** condition slot accessors are methods.
2813 ** (VECTOR NIL) is a subtype of STRING.
2815 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2816 * minor incompatible change: some nonsensical specialized lambda
2817 lists (used in DEFMETHOD) which were previously ignored now signal
2819 * minor incompatible change: the system is now aware of the types of
2820 variables in the COMMON-LISP package, and will signal errors for
2821 most violations of these type constraints (where previously they
2822 were silently accepted).
2823 * minor incompatible change: COMPILE-FILE now uses the freedom
2824 afforded (ANSI 3.2.2.3) to use derived function types for
2825 functions defined in the same file. This also permits the system
2826 to warn on static type mismatches and function
2827 redefinition. (Currently it does not work with high DEBUG level.)
2828 * minor incompatible change: VALUES declaration is disabled.
2829 * When issuing notes, the compiler now signals a condition of type
2830 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2831 restart for use in user handlers. It is expected that the
2832 COMPILER-NOTE condition will eventually become a condition
2833 supertype to a hierarchy of note types, which will then be
2834 handleable in a similar fashion. However, at the moment, no such
2835 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2836 but it's an implementation detail, not a classification for the
2838 * Changes in type checking closed the following bugs:
2839 ** type checking of unused values (192b, 194d, 203);
2840 ** template selection based on unsafe type assertions (192c, 236);
2841 ** type checking in branches (194bc).
2842 * A short form of VALUES type specifier has ANSI meaning (it has
2843 increased the number of situations when SBCL cannot perform type
2845 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2846 keywords or constants is permissible.
2847 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2848 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2849 classes. (thanks to Antonio Martinez)
2850 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2851 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2852 argument to a pretty-print stream. Instead, it leaves any such
2853 operations to DESCRIBE-OBJECT methods.
2854 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2856 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2857 lambda lists. (thanks to David Lichteblau)
2858 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2859 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2860 (thanks to Gerd Moellmann)
2861 * fixed bug 246: increased compilation speed of long
2862 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2864 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2866 * DEFCONSTANT now throws a condition of type
2867 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2868 constant to a non-EQL value; CONTINUE and ABORT restarts
2869 respectively change and preserve the value.
2870 * fixed bug 63: The code walker, part of the implementation of CLOS,
2871 is now better at handling symbol macros.
2872 * bug fix: There is no longer an internal implementation type named
2873 CL:LENGTH. (reported by Raymond Toy)
2874 * bug fix: In macro-like defining macros/special operators the
2875 implicit block does not enclose the lambda list.
2876 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2877 enclosed in parentheses) are not suitable as type specifiers, and
2878 their use properly signals an error now.
2879 * bug fix: An argument count mismatch for a type specifier in code
2880 being compiled no longer causes an unhandled error at compile
2881 time, but signals a compile-time warning.
2882 * fixed simple vector readable printing
2883 * bug fix: DESCRIBE takes more care over whether the class
2884 precedence list slot of a class is bound before accessing it.
2885 (reported by Markus Krummenacker)
2886 * bug fix: FORMATTER can successfully compile pretty-printer format
2887 strings which use variants of the ~* directive inside.
2888 * bug fix: SEARCH now applies its TEST predicate to the elements of
2889 the arguments in the correct order. (thanks to Wolfhard Buss)
2890 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2891 in type inference. (thanks to Robert E. Brown)
2892 * bug fix: Reading in symbols with an explicit package name of ""
2893 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2894 * fixed some bugs revealed by Paul Dietz' test suite:
2895 ** NIL is now allowed as a structure slot name.
2896 ** Arbitrary numbers, not just REALs, are allowed in certain
2897 circumstances in LOOP for-as-arithmetic clauses.
2898 ** Multiple class redefinitions before slot access no longer
2899 causes a type error.
2900 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2901 association between the name and a class.
2902 ** Generic functions with non-standard method-combination and over
2903 five methods all of which return constants no longer return NIL
2904 after the first few invocations. (thanks to Gerd Moellmann)
2905 ** CALL-NEXT-METHOD with no arguments now passes the original
2906 values of the arguments, even in the presence of assignment.
2907 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2909 ** DISASSEMBLE works with closures and funcallable instances.
2910 ** ADD-METHOD now returns the generic function, not the new method.
2911 ** FIND-METHOD signals an error if the lengths of the specializers
2912 is incompatible with the generic function, even if the ERRORP
2914 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2915 which its argument is a member.
2916 ** DEFCLASS only redefines the class named by its class-name
2917 argument if that name is the proper name of the class;
2918 otherwise, it creates a new class.
2919 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2920 of the UNBOUND-SLOT condition to the name of the slot.
2921 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2922 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2923 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2924 SLOT-MAKUNBOUND in the specified fashion.
2926 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2927 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2928 cross-compilation host. As a consequence, we can now bootstrap our
2929 way up to SBCL starting with a bare gcc toolchain and human-readable
2930 source code (first the source to CLISP, then the source to SBCL).
2931 * A contributed module containing a partial implementation of the
2932 simple-streams interface has been included. (thanks to Rudi
2934 * A contributed module implementing the RFC1321 Message Digest
2935 Algorithm, known as MD5, has been included.
2936 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2937 no longer has any effect, as the code controlled by this feature
2938 has been deleted. (As far as we know, no-one has ever built using
2939 this feature, and its semantics were confused in any case).
2940 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2941 work on conditions (as required by the ANSI specification),
2942 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2943 expected behaviour on conditions. Users should note, however,
2944 that such behaviour is not required by the ANSI specification,
2945 and so use of this behaviour may render their code unportable.
2946 * fixed some bugs revealed by Paul Dietz' test suite:
2947 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2949 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2950 ** SXHASH on condition objects no longer returns NIL.
2951 ** :ALLOCATION :CLASS slots are better treated; their values are
2952 updated on class redefinition, and initforms inherited from
2953 superclasses are applied.
2954 ** REMOVE-METHOD returns its generic function argument even when
2955 no method was removed.
2956 ** SHARED-INITIALIZE now initializes the values of the requested
2957 slots, including those with :ALLOCATION :CLASS.
2958 ** ALLOCATE-INSTANCE now works on structure classes defined via
2959 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2961 ** SLOT-EXISTS-P now works on conditions, as well as structures
2963 ** MAKE-LOAD-FORM now has the required methods on
2964 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2965 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2966 keyword, and now implements the SLOT-NAMES argument.
2967 ** methods with &OPTIONAL arguments no longer allow too many
2968 arguments to be passed in the call without error.
2969 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2970 option is consistent with the required arguments of the generic
2971 function lambda list.
2972 * bug fix: REQUIRE accepts a string designator. (Thanks to
2974 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2975 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2976 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2977 * bug fix: The compiler now checks for duplicated variables in macro
2979 * bug fix: SETQ on globals returns the correct value.
2980 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2981 not a COMPILER-ERROR (followed by some other strange error on
2982 choosing the CONTINUE restart).
2983 * bug fix: make.sh and friends are now more consistent in the way that
2984 they look for GNU "make".
2986 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2987 * experimental native threads support (on x86 Linux >=2.4 only).
2988 This is not compiled in by default: you need to add :SB-THREAD to
2989 the target features. See the "Beyond ANSI" chapter of the manual
2991 * fix for longstanding nonANSIism: The old distinction between
2992 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2993 The return value from CL:FIND-CLASS is now a CLOS class, and
2994 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2995 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2996 * An interface to the MetaObject Protocol, as described in Kiczales,
2997 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2998 MIT Press, 1991, is available from the SB-MOP package.
2999 * incompatible change: the SB-PCL package should now be considered
3000 a private implementation detail, and no longer a semi-private MOP
3002 * minor incompatible change: due to rearrangement for threads, the
3003 control stack and binding stack are now allocated at arbitrary
3004 addresses instead of being hardcoded per-port. Users affected by
3005 this probably have to be doing advanced things with shared
3006 libraries, and will know who they are.
3007 * minor incompatible change: Previously, all --eval forms used were
3008 processed with READ before any of them were processed with EVAL.
3009 Now each --eval form is processed with both READ and EVAL before
3010 the next --eval form is processed. (Thus package operations like
3011 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3012 work as the user might reasonably expect.)
3013 * minor incompatible change: *STANDARD-INPUT* is now only an
3014 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3016 * minor incompatible change: Y-OR-N-P is now character-oriented,
3017 not line oriented. Also, YES-OR-NO-P now works without errors.
3018 (thanks to Antonio Martinez)
3019 * sb-aclrepl module improvements: an integrated inspector, added
3020 repl features, and a bug fix to :trace command.
3021 * Known functions, which cannot be open coded by the backend, are
3022 considered to be able to check types of their arguments. (fixing
3023 a bug report by Nathan J. Froyd)
3024 * fixed a bug in computing method discriminating functions: It is
3025 now possible to define methods specialized on classes which have
3026 forward-referenced superclasses. (thanks to Gerd Moellmann)
3027 * fixed evaluation order in optional entries (reported by Gilbert
3029 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3030 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3031 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3032 required-by-AMOP NAME argument, as well as CLASS and
3033 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3034 * fixed bug 20: DEFMETHOD can define methods using names that are
3035 not the proper names of classes to designate class specializers.
3036 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3037 Unix file descriptors, instead of blowing up. (thanks to Antonio
3039 * Garbage collection refactoring: user-visible change is that a
3040 call to the GC function during WITHOUT-GCING will not do garbage
3041 collection until the end of the WITHOUT-GCING. If you were doing
3042 this you were probably losing anyway.
3043 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3044 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3045 TYPEP the latter but not the former.
3046 * The compiler issues a full WARNING for calls to undefined functions
3047 with names from the CL package.
3048 * MAP-INTO for a vector destination is open coded. (reported by
3049 Brian Downing on c.l.l)
3050 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3051 documentation string.
3052 * fixed some bugs revealed by Paul Dietz' test suite:
3053 ** COPY-ALIST now signals an error if its argument is a dotted
3055 ** Condition slots are now accessed more correctly in the presence
3056 of multiple initargs for a given slot.
3057 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3058 exclude restarts of the same name associated with a different
3060 ** DEFCLASS of forward-referenced classes with another
3061 forward-referenced class in the superclasses list no longer
3063 ** Condition slots are now initialized once each, not multiple
3064 times. (thanks to Gerd Moellmann)
3065 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3067 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3068 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3069 arguments contain duplicated elements.
3070 ** RESTART-CASE understands local macros.
3071 ** RESTART-CASE associates exactly its own restarts with a condition.
3072 ** ENDP in safe mode checks its argument to be of type LIST.
3073 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3074 in question is unbound.
3075 ** Optimized MAKE-INSTANCE functions no longer cause internal
3076 assertion failures in the presence of duplicate initargs.
3077 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3078 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3079 propagated even in the ctor optimized implementation of
3081 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3083 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3084 * a better implementation of SXHASH on (simple) bit vectors,
3085 measured both in execution speed and in distribution of results
3086 over the positive fixnums, has been installed. Likewise, a better
3087 implementation of EQUAL for simple bit vectors is now available.
3088 * fixed CEILING optimization for a divisor of form 2^k.
3089 * fixed bug 240 (emitting extra style warnings "using the lexical
3090 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3091 by Antonio Martinez)
3092 * fixed SXHASH, giving different results for NIL depending on type
3093 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3094 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3095 variable. (found by Rolf Wester)
3096 * SBCL does not ignore type declarations for special
3097 variables. (reported by rif on c.l.l 2003-03-05)
3098 * some bug fixes in contrib/sb-aclrepl/
3099 * fixed some bugs revealed by Paul Dietz' test suite:
3100 ** a bug in the CONS type specifier, whereby the CAR and CDR
3101 types got intertwined, has been fixed;
3102 ** the type system is now able to reason about the interaction
3103 between INTEGER and RATIO types more completely;
3104 ** APPEND, [N]REVERSE and NRECONC check that those their
3105 arguments, which must be proper lists, are really so;
3106 ** An array specialized to be unable to hold elements has been
3107 implemented, as required -- yes, really -- by ANSI;
3108 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3109 on malformed property lists;
3111 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3112 * incompatible packaging change: in line with Unix convention,
3113 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3114 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3115 * REQUIRE and PROVIDE are now optionally capable of doing something
3116 useful. See the documentation string for REQUIRE.
3117 * infrastructure for a managed SBCL contrib system: contributed
3118 modules in this release include:
3119 ** the ASDF system definition facility;
3120 ** an interface to the BSD Sockets API;
3121 ** an ACL-like convenience interface to the repl;
3122 (thanks to Kevin Rosenberg)
3123 ** an implementation of ROTATE-BYTE, with efficient implementation
3125 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3126 gives a closer approximation to the right answer than previously.
3127 (thanks to Raymond Toy)
3128 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3129 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3130 optional environment arguments, as required by ANSI.
3131 * fixed bugs in other functions taking environment objects, allowing
3132 calls with an explicit NIL environment argument to be compiled
3134 * fixed bug 228: primary return values from
3135 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3136 COMPILE or FUNCTION.
3137 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3138 :TYPE will no longer signal errors on innocuous objects.
3139 * fixed bug 231b: SETQ is better at respecting type declarations in
3140 the lexical environment.
3141 * fixed a bug in DEFCLASS: classes named by symbols with no or
3142 unprintable packages can now be defined.
3143 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3144 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3145 * fixed compiler failure related to checking types of functions.
3146 (reported by Robert E. Brown)
3147 * the compiler is now much more consistent in its error-checking
3148 treatment of bounding index arguments to sequence functions: in
3149 (SAFETY 3) code, errors will be signalled in almost all cases if
3150 invalid sequence bounding indices are passed to functions defined
3151 by ANSI to operate on sequences.
3152 * fixed a bug in the build procedure: documentation of SBCL-specific
3153 packages is now preserved and available in the final Lisp image.
3154 * lifted FDEFINITION lookup out of loops in the implementation of
3155 many list operations. (thanks to Robert E. Brown)
3156 * fixed a bug in the reader: the #n# reader macro now works for
3157 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3158 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3159 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3160 E. Brown and Tony Martinez respectively)
3161 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3162 SLOT-BOUNDP: in particular, it is now able to optimize them much
3163 better, and is now not vulnerable to having packages renamed.
3164 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3165 always called when a slot is not present in an instance. (thanks
3167 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3168 longer signal an error on unreading a character following EOF on
3169 the previous constituent stream. (thanks to Tony Martinez)
3170 * fixed some bugs revealed by Paul Dietz' test suite:
3171 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3172 not just nonnegative fixnums;
3173 ** the logical bit-array operators such as BIT-AND now accept an
3174 explicit NIL for their "opt-arg" argument (to indicate a
3175 freshly-consed result bit-array);
3176 ** ELT now signals an error on an invalid sequence index in safe
3178 ** the type system is now cleverer about negations of numeric
3179 types, and consequently understands the BIGNUM and RATIO types
3181 ** the type system is now cleverer about the interaction between
3182 INTEGER and RATIO types: while bugs still remain, many more
3183 cases are accurately computed;
3184 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3185 if it is in the last clause;
3186 ** CONSTANTLY now correctly returns a side-effect-free function in
3188 ** DECLARE is no longer treated as a special-operator; in
3189 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3190 * incremented fasl file version number due to the change in the
3191 DEFSTRUCT-SLOT-DESCRIPTION structure.
3193 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3194 * minor incompatible change: code processed by the "interpreter" or
3195 EVAL now has a compilation optimization policy of (DEBUG 2)
3196 (changed from (DEBUG 1)) to improve debuggability of interactive
3197 development, and to allow the use of the debug RETURN command in
3199 * an experimental implementation of the RETURN command for the
3200 debugger has been included. (thanks to Frederik Kuivinen)
3201 * fixed bug 62: constraints were not propagated into a loop.
3202 * fixed bug in embedded calls of SORT (reported and investigated by
3204 * fixed some bugs revealed by Paul Dietz' test suite:
3205 ** printing and reading of arrays with some dimensions having
3206 length 0 (thanks to Gerd Moellmann);
3207 ** BOA constructor with &AUX argument without a default value does
3208 not cause a type error;
3209 ** CONSTANTP now returns true for all self-evaluating objects.
3211 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3212 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3213 accessors that are related by inheritance, as specified in the
3214 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3215 Valtteri Vuorikoski)
3216 * The compiler is now able to inline functions that were defined in
3217 a complex lexical environment (e.g. inside a MACROLET).
3218 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3220 * Support for the upcoming FreeBSD-5.0 release has been included.
3221 (thanks to Dag-Erling Smorgrav)
3222 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3223 effect when it is not in a toplevel context.
3224 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3225 stand a better chance of being correct. (thanks to Gerd
3227 * fixed bug in COERCE, which now signals an error on coercing a
3228 rational to a bounded real type which excludes the expected
3230 * The compiler is now able to derive types more accurately from the
3231 COERCE and COMPILE functions.
3232 * fixed bug 223: functional binding is considered to be constant
3233 only for symbols in the CL package.
3234 * fixed bug 231: SETQ did not check the type of a variable being set
3235 (reported by Robert E. Brown)
3236 * A new optimization for MAKE-INSTANCE has been included, fixing
3237 various bugs (including relating to :ALLOCATION :CLASS slots and
3238 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3240 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3241 ** As required by ANSI, LOOP now disallows anonymous collection
3242 clauses such as COLLECT I in conjunction with aggregate boolean
3243 clauses such as THEREIS (= I 1);
3244 ** LOOP now signals an error when any variable is reused in the
3245 same loop (including the potentially useful construct analogous
3246 to WITH A = 1 WITH A = (1+ A);
3247 ** IT is only a special loop symbol within the first clause of a
3248 conditional loop clause;
3249 ** LOOP with a typed iteration variable over a hashtable now
3250 signals a type error iff it should.
3251 * fixed some other bugs revealed by Paul Dietz' test suite:
3252 ** FILE-STREAM now names the class previously known as FD-STREAM;
3253 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3254 argument) no longer signals an error;
3255 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3256 of the slot symbol, rather than using the current package
3257 ((:CONC-NAME "") continues to intern the slot's name in the
3259 * incremented fasl file version number, because of the incompatible
3260 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3261 of the new implementation of DEFINE-COMPILER-MACRO.
3263 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3264 * Support for building SBCL for MIPS platforms running in
3265 little-endian mode has now been checked in, and basic
3266 functionality on said platforms verified.
3267 * minor incompatible change: PCL now records the pathname of a file
3268 in which methods and the like are defined, rather than its
3270 * minor incompatible change: TRUENAME now considers the truename of
3271 a file naming a directory to be the pathname with :DIRECTORY
3272 component indicating that directory.
3273 * minor incompatible change: a NAMED clause in the extended form of
3274 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3275 reason for the previous behaviour is unclear.
3276 * more systematization and improvement of CLOS and MOP conformance
3277 in PCL (thanks to Gerd Moellman and Pierre Mai):
3278 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3280 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3281 primary methods with no specializers;
3282 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3284 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3285 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3286 FORWARD-REFERENCED-CLASSes; error reporting on
3287 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3289 ** SXHASH on CLOS instances now uses a slot internal to the
3290 instance to return different numbers on distinct instances,
3291 while preserving the same return value through invocations of
3293 ** DEFMETHOD signals errors when methods with longer incongruent
3294 lambda lists are added to generic functions;
3295 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3296 CLASS, as specified in AMOP;
3297 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3298 on the order returned by the primary method for classes of
3299 class STANDARD-CLASS;
3300 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3301 * fixed some bugs shown by Paul Dietz' test suite:
3302 ** DOLIST puts its body in TAGBODY;
3303 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3305 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3306 value producing form;
3307 ** if more variables are given to PROGV than values, extra
3308 variables are bound and made to have no value;
3309 ** NSUBSTITUTE on list arguments gets the right answer with
3311 ** ELT signals an error of type TYPE-ERROR when the index argument
3312 is not a valid sequence index;
3313 ** LOOP signals (at macroexpansion time) an error of type
3314 PROGRAM-ERROR when duplicate variable names are found;
3315 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3316 ** FUNCALL of special-operators now cause an error of type
3318 ** PSETQ now works as required in the presence of side-effecting
3319 symbol-macro places;
3320 ** NCONC accepts any object as its last argument;
3321 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3323 ** loop-for-as-package does not require a package to be explicitely
3325 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3327 * fixed bug 166: compiler preserves "there is a way to go"
3328 invariant when deleting code.
3329 * fixed bug 172: macro lambda lists with required arguments after
3330 &REST arguments now cause an error to be signalled. (thanks to
3332 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3333 bug. (thanks to Matthew Danish)
3334 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3336 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3337 arguments are lexically rebound. (thanks to Gerd Moellmann and
3339 * fixed bug 194: error messages are now more informative when there
3340 is no primary method applicable in a call to a generic
3341 function. (thanks to Gerd Moellmann)
3342 * fixed bug in command line argument checking (thanks to Julian
3344 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3345 (thanks to Matthew Danish)
3346 * incremented fasl file version number, because of the
3347 SXHASH-related changes in the layout of CLOS data structures
3349 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3350 * minor incompatible change: The runtime (the Unix executable named
3351 "sbcl") is now much pickier about the .core files it will load.
3352 Essentially it now requires .core files to descend from the same
3353 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3354 as the runtime does. (The intent is to prevent the crashes which
3355 can occur, and which can even be reported as mysterious failures,
3356 when people patch the sources or change the build parameters
3357 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3358 sbcl and .core files.)
3359 * fixed bug: VALUES-LIST is no longer optimized away.
3360 * fixed bug 142: The FFI conversion of C string values to Lisp
3361 string values no longer conses excessively. (thanks to Nathan
3362 Froyd porting Raymond Toy's fix to CMU CL)
3363 * began to systematize and improve MOP conformance in PCL (thanks to
3364 Nathan Froyd, Gerd Moellman and Pierre Mai):
3365 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3367 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3368 ** FINALIZE-INHERITANCE is now called on class finalization;
3369 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3370 argument precedence order.
3371 * fixed bug 202: The compiler no longer fails on functions whose
3372 derived types contradict their declared type.
3373 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3374 so it can be non-toplevel.
3375 * The fasl file version number has changed (because of the new
3376 implementation of DEFMACRO).
3377 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3378 safe code, that any length requirement by their type-specifier
3379 argument is valid. The exceptions to this are described in bug
3381 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3382 functions now check the types of their inputs as required by ANSI.
3383 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3384 introduced symbol is DECLAREd to be SPECIAL.
3385 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3386 * fixed bug: :COUNT argument to sequence functions may be negative
3387 * fixed bug: body of DO-SYMBOLS may contain declarations
3388 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3389 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3390 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3391 symbol macro only once
3392 * fixed printing of call frame when argument list is unavailable
3393 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3394 * compiler no longer signals WARNING on unknown keyword
3397 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3398 * A beta-quality port to the mips architecture running Linux,
3399 based on the old CMUCL backend, has been made. It has been tested
3400 on a big-endian kernel, and works sufficiently well to be able to
3401 rebuild itself; it has not been tested in little-endian mode.
3402 * fixed an inconsistency between gencgc.c and purify.c which made
3403 dumping/loading .core files unreliable
3404 * fixed bug 120a: The compiler now deals correctly with IFs where
3405 the consequent is the same as the alternative, instead of
3406 misderiving the return type. (thanks to Alexey Dejneka)
3407 * fixed bug 113: Logical pathnames are now dumpable (the logical
3408 host is resolved at load-time, throwing an error if it is not
3410 * fixed bug 174: FORMAT's error message is slightly clearer when a
3411 non-printing character is used in a format directive.
3412 * fixed several bugs in compiler checking of type declarations, i.e.
3413 violations of the Python "declarations are assertions" principle
3414 (thanks to Alexey Dejneka)
3415 * fixed several bugs in PCL's error checking (thanks to Gerd
3417 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3419 * fixed bug in compilation of functions as first class values
3420 (thanks to Antonio Martinez-Shotton)
3421 * The compiler's handling TYPE-ERRORs which it can prove will
3422 inevitably happen at runtime has been cleaned up and corrected
3423 in several ways. (thanks to Alexey Dejneka)
3424 * improved argument type checking for various basic arithmetic
3425 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3426 lavished on them in the past that they can be compiled in many
3427 ways in different special cases
3428 * fixed bug 181: compiler checks validity of user supplied type
3430 * cleaned up code flushing in optimization: Function calls which
3431 should signal errors for safety purposes (e.g. which ANSI says
3432 should signal errors when their arguments are of incorrect type)
3433 are no longer optimized away.
3434 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3435 * incremented fasl file version number, because changes in the
3436 implementation of sequence functions like COERCE caused
3437 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3438 in old inline expansions) to become undefined. (Actually these
3439 changes were later undone, so we might very well be binary
3440 compatible with 0.7.7 after all, but leaving the version number
3441 incremented seemed like the simplest and most conservative
3444 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3445 * An alpha-quality port to the parisc architecture running Linux,
3446 based on the old CMUCL backend, has been made. This, even more so
3447 than the other backends, should be considered still a work in
3448 progress; known problems include that the Linux kernel in 64-bit
3449 mode does not propagate the correct sigcontext structure to
3450 userspace, and consequently SBCL on a parisc64 kernel will not
3452 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3453 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3454 suppressed.) Also now that the compiler is looking at declarations
3455 in the environment, it checks optimization declarations as well,
3456 and suppresses inlining when (> DEBUG SPEED).
3457 * More fixes have been made to treatment of floating point exception
3458 treatment and other Unix signals. In particular, floating point
3459 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3460 * The detection and handling of control stack exhaustion (infinite
3461 or very deeply nested recursion) has changed. Stack exhaustion
3462 detection is now done by write-protecting pages at the OS level
3463 and applies at all optimization settings; when found, a
3464 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3465 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3466 be caught using IGNORE-ERRORS.
3467 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3468 correctly when transforming recursive LABELS functions to LETs.
3469 (thanks to Alexey Dejneka)
3470 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3471 that are names of constants or global variables.
3472 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3473 alien routines with docstrings.
3474 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3475 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3477 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3478 (thanks to Eric Marsden)
3479 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3480 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3481 * Bug fix: The SPARC backend can now compile functions involving
3482 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3483 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3484 to a functions expecting a PATHNAME-DESIGNATOR.
3485 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3486 lambda lists. (thanks to Alexey Dejneka)
3487 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3488 functions so that EXPORTing the name of the class doesn't cause
3489 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3490 to Antonio Martinez for reporting this)
3491 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3492 constant-folded without failing an assertion. (thanks to Einar
3493 Floystad Dorum for reporting this)
3494 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3495 types are now dealt with more correctly by the compiler.
3496 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3497 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3498 behaviour analogous to RENAME-FILE. This puts its behaviour more
3499 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3501 * The fasl file version number has changed again. (because of the
3502 bug fix involving the names of PCL MAKE-INSTANCE functions)
3504 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3505 * bug fix: Floating point exceptions are treated much more
3506 consistently on the x86/Linux and PPC/Linux platforms.
3507 * Array initialization with :INITIAL-ELEMENT is now much faster for
3508 cases when the compiler cannot open code the array creation, but
3509 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3510 array accesses have also seen a speed increase.
3511 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3512 specified. (This was at the root of some bad interactions between
3513 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3515 * bug fix: Internal error arguments for undefined functions are now
3516 computed correctly on the PPC/Linux platform.
3517 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3518 Raymond Toy's patch for CMU CL)
3519 * Support for the Solaris 9 operating environment has been included
3520 (thanks to Daniel Merritt)
3521 * A very ugly but hopefully complete draft of the missing FFI chapter
3522 of the manual has been created by reformatting the corresponding
3523 CMU CL manual chapter into (currently very ugly and incoherent)
3524 DocBook and bringing it up to date for SBCL behavior. Thus, the
3525 manual is now essentially complete, at least by my extreme
3526 once-and-only-once standards, whereby it's acceptable to refer to
3527 the doc strings of SB-EXT functions as the primary documentation.
3528 * The fasl file version number has changed again, due to cleanup of
3529 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3530 is no longer a static symbol.)
3532 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3533 * SBCL now builds with OpenMCL (version 0.12) as the
3534 cross-compilation host; also, more progress has been made toward
3535 bootstrapping under CLISP.
3536 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3538 * bug 158 fixed: The compiler can now deal with integer loop
3539 increments different from 1; fixing this turned out also to fix
3541 * bug 169 fixed: no more bogus warnings about using lexical bindings
3542 despite the presence of perfectly good SPECIAL declarations (thanks
3543 to David Lichteblau)
3544 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3545 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3546 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3548 * bug 180 fixed: Method combination specifications no longer ignore
3549 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3550 * bug fix: Structure type predicate functions now check their argument
3551 count as they should.
3552 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3553 correctly. (thanks to Pierre Mai)
3554 * minor incompatible change: The --noprogrammer option is deprecated
3555 in favor of the new --disable-debugger option, which is very similar.
3556 (The major difference is that it takes effect at a slightly different
3557 time at startup, causing handling of errors in --sysinit and
3558 --userinit files will be affected differently.) The
3559 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3560 been added to allow this functionality to be controlled from ordinary
3561 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3562 maintainers, who might want to run non-interactive scripts to
3563 build SBCL cores which will later be used interactively.)
3564 * minor incompatible change: The LOAD function no longer, when given
3565 a wild pathname to load, loads all files matching that pathname.
3566 Instead, an error of type FILE-ERROR is signalled.
3568 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3569 * bug 147 fixed: The compiler preserves its block link/count
3570 invariants more correctly now so that it doesn't crash. (thanks
3572 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3574 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3575 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3576 no-value-for-this-character as NIL (as specified by ANSI).
3577 * HOST-NAMESTRING on physical pathnames now returns a string that is
3578 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3579 (thanks to Christophe Rhodes)
3580 * The Alpha port handles icache flushing more correctly. (thanks to
3582 * More progress has been made toward bootstrapping under CLISP. (thanks
3583 to Christophe Rhodes)
3584 * The fasl file format has changed again, because dynamic loading
3585 on OpenBSD (which has non-ELF object files) motivated some cleanups
3586 in the way that foreign symbols are transformed and passed around.
3587 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3588 is no longer treated as whitespace by the reader, but instead as
3589 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3590 |A
\7fB|, instead of A as it used to.
3592 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3593 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3594 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3595 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3596 this as of 0.7.1.45, but was left out of the previous news section
3597 (thanks to Dan Barlow)
3598 * SBCL now runs on the Solaris operating system on SPARC architectures
3599 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3600 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3601 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3602 * SPARC backend cleanups, allowing builds of cores optimized for V8
3603 and V9 SPARCS, and also emission of code targeted to a particular
3604 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3606 * SBCL is closer to bootstrapping under CLISP, thanks to various
3607 fixes by Christophe Rhodes.
3608 * The fasl file format has changed again, to allow the compiler's
3609 INFO database to support symbol macros.
3610 * The user manual (in doc/) is formatted into HTML more nicely.
3611 (thanks to coreythomas)
3612 * The system is smarter about SUBTYPEP relationships, especially
3613 those involving NOT types (including types such as ATOM which are
3614 represented internally using NOT types). Thus SUBTYPEP is less
3615 likely to return (VALUES NIL NIL) in general, and in particular
3616 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3618 * The fasl file format has changed again, because the internal
3619 representation of types now includes a new slot to support the new
3620 SUBTYPEP-of-NOT-types logic.
3621 * (not a change in the main branch of SBCL, but a related prototype
3622 which can hopefully be merged into the main branch of SBCL in the
3623 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3624 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3625 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3626 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3627 dispatch macro character combinations. (thanks to Alexey Dejneka)
3628 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3629 that superficially look like logical namestrings correctly.
3630 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3632 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3633 default supplied-p) for &optional and &key arguments. (thanks to
3636 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3637 * incompatible change: The compiler is now less aggressive about
3638 tail call optimization, doing it only when (> SPACE DEBUG) or
3639 (> SPEED DEBUG). (This is an incompatible change because there are
3640 programs which relied on the old CMU-CL-style behavior to optimize
3641 away their unbounded recursion which will now die of stack overflow.)
3642 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3643 for non-GENCGC systems has been increased to 20M (since that
3644 seems much closer to the likely performance optimum for modern
3645 systems than the old 4M value was)
3646 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3647 and *DEBUG-PRINT-LEVEL*
3648 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3649 of CMU CL's support for SPARC, and various endianness and other
3650 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3651 * new syntactic sugar for the Unix command line: --load foo.bar is now
3652 an alternate notation for --eval '(load "foo.bar")'.
3654 ** The system now detects stack overflow and handles it gracefully,
3655 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3656 optimization settings. (This is a good thing in general, and
3657 its introduction in this version should be particularly timely
3658 for anyone whose code fails because of suppression of tail
3660 ** The system now hunts for the C variable "environ" in a more
3661 devious way, to avoid segfaults when the C library version differs
3662 between compile time and run time. (thanks to Christophe Rhodes)
3663 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3664 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3665 ** The compiler no longer issues bogus style warnings for undefined
3666 classes in the same source file as the DEFCLASSes which defined
3667 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3669 ** fixes in CONDITION class precedence list for undefined function
3670 errors (thanks to Alexei Dejneka)
3671 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3672 correctly. (thanks to Dan Barlow)
3673 ** portability fixes aiming at bootstrapping under CLISP (thanks
3674 to Dave McDonald and Christophe Rhodes)
3675 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3676 ** fixes in type translation and and type inference (thanks to
3678 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3679 ** various fixes in the new ports (thanks to Dan Barlow)
3680 * several changes related to debugging:
3681 ** suppression of tail recursion, as noted above
3682 ** stack overflow detection, as noted above
3683 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3684 is now the default. (For some time encapsulation has been more
3685 reliable than the breakpoint-based :ENCAPSULATE NIL
3686 implementation, at least on X86 systems; and I just noticed that
3687 encapsulation also seems closer to the spirit of the ANSI
3690 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3692 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3693 up properly again. (There was a packaging bug in 0.7.0 which
3694 left their definitions in SB-SYS::LOAD-FOREIGN and
3695 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3696 vital for most things which interface to C-level interfaces,
3697 like extensions working with sockets or databases or
3698 Perl-compatible regexes or whatever, and the need to fix
3699 this bug is the main reason that 0.7.1 was released so
3701 ** DEFGENERIC is now choosier about the methods it redefines, so that
3702 reLOADing a previously-LOADed file containing DEFGENERICs does
3703 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3704 cycle now works as it should. (thanks to Alexey Dejneka)
3705 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3706 fixed by Christophe Rhodes. (He actually submitted this patch
3707 months ago, and I delayed until after 0.7.0.)
3708 ** Bug 111 (internal compiler confusion about runtime checks on
3709 FUNCTION types) was fixed by Alexey Dejneka.
3710 * Some internal cleanups (getting rid of variables which aren't
3711 needed now that the byte interpreter is gone) caused the fasl
3712 file format number to change again.
3714 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3715 * major incompatible change: The default fasl file extension, i.e. the
3716 default extension for files produced by COMPILE-FILE, has changed
3717 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3719 ** There are many changes in the implementation of the compiler.
3720 SBCL is now essentially a compiler-only implementation of ANSI
3721 Common Lisp. EVAL still "interprets" a few special cases, but
3722 almost all the interesting cases are handled by creating
3723 a LAMBDA expression, calling COMPILE on it, then calling
3724 FUNCALL on the result.
3725 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3726 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3727 Since the code is newer, there might still be some new bugs
3728 (though not as many as before Martin Atzmueller's fixes:-). But
3729 the new code is substantially simpler and clearer, and hopefully
3730 any remaining bugs will be simpler, less fundamental, and more
3731 fixable then the bugs in the old code.
3732 ** The revised compiler is still a little unsteady on its feet.
3734 *** The debugging information it produces (particularly the names
3735 of FUNCTION objects) is sometimes much less useful than what
3736 the old compiler produced.
3737 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3738 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3739 within a MACROLET) has been temporarily weakened.
3740 ** There are new compiler optimizations for various functions:
3741 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3742 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3743 *** the math functions TRUNCATE, FLOOR, and CEILING
3744 *** the function-of-all-trades COERCE
3745 Mostly these should be transparent, but there's one
3746 potentially-annoying problem (bug 117): when the compiler
3747 inline-expands a function and does type analysis on the result,
3748 it can create control paths which have type mismatches, and
3749 when it can't prove that those control paths aren't taken,
3750 it will issue WARNINGs about the type mismatches. This is
3751 a particular problem in practice for the new sequence functions.
3752 It's not clear how this should be fixed, and for now, a
3753 workaround is given in the entry for 117 in the BUGS file.
3754 ** (Because of the interaction between the two previous items --
3755 occasional inlining problems and new inline expansions -- some
3756 of the new sequence function optimizations won't really kick in
3757 completely until debugging information, and then inlining, are
3758 straightened out in some future version.)
3759 * minor incompatible changes:
3760 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3761 DIRECTORY no longer implicitly promotes NIL slots of its
3762 pathname argument to :WILD. In particular, when you ask for the
3763 contents of a directory (which you used to be able to do without
3764 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3765 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3766 ** changes in behavior that ANSI explicitly defines to be
3767 implementation dependent:
3768 *** The new compiler-only implementation still conforms with ANSI,
3769 but acts a little different than before. Besides the obvious
3770 changes in performance tradeoffs (that the cost per form passed
3771 to EVAL has gone up, and the cost per form executed by EVAL
3772 has gone down), the behavior of the system changes a little
3773 because there are no longer any interpreted function objects.
3774 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3775 e.g. doing COMPILE on the output of interactive DEFUN is
3777 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3779 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3780 has changed from (:CL) to NIL.
3781 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3782 e.g. #\Newline and #\Tab, don't have names specified in the
3783 ANSI Common Lisp standard, is now based on their ASCII symbolic
3784 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3785 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3786 are no longer used for output.
3787 ** changes in internal implementation constants:
3788 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3789 4 million. (If your application spends a lot of time GCing and
3790 you have a lot of RAM, you might want to experiment with
3791 increasing it even more.)
3792 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3793 However, almost all old code should still continue to work without
3794 immediate update, as SB-C-CALL is now a (deprecated) nickname
3796 ** Old operator names in the style DEF-FOO are now deprecated in
3797 favor of new corresponding names DEFINE-FOO, for consistency with
3798 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3799 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3800 internal symbols, but a few supported extensions like
3801 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3802 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3803 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3804 etc. as you get deeper into recursive calls to the debugger
3805 command loop, instead of the old "5]", "5]]", "5]]]"
3806 sequence. (I was motivated to do this when squabbles between
3807 ILISP and SBCL left me very deeply nested in the debugger. In the
3808 short term, this change will probably provoke more ILISP/SBCL
3809 squabbles, but hopefully it will be an improvement in the long run.)
3810 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3811 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3812 function, since declaiming return types involving aliens is
3813 (1) annoyingly messy to do by hand and (2) vital to efficient
3814 compilation of code which calls such functions.
3815 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3816 longer reexported by the SB-EXT package. They're solely useful
3817 for alien code, so it seems more logical that you should get
3818 them from the SB-ALIEN package, not in SB-EXT.
3819 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3820 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3821 features. Instead, the code that they used to control is always
3822 built into the system.
3823 * many other bug fixes
3824 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3825 advantage of the new EVAL-WHEN stuff and to clean them up in
3826 general, and they are now more ANSI-compliant in a number of
3827 ways. Martin Atzmueller is responsible for a lot of this.
3828 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3830 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3831 *** correct ERROR type for various file operations
3832 *** some fixes for Lisp streams
3833 *** DEFMETHOD syntax checking
3834 *** changing old weird representation of debug information as
3835 strings (which, among their other deficiencies, don't transform
3836 correctly when you rename packages, and don't change their
3837 print representation when you change things like *PACKAGE*
3838 and *PRINT-LENGTH*) to symbols and lists of symbols
3839 He also made several improvements and fixed several bugs in DESCRIBE.
3840 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3842 *** misbehavior of WRITE-STRING/WRITE-LINE
3843 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3844 and several other LOOP problems as well
3845 *** DIRECTORY when similar filenames are present
3846 *** DEFGENERIC with :METHOD options
3847 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3848 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3849 *** argument ordering in FIND with :TEST option
3850 *** mishandled package designator argument in APROPOS-LIST
3851 *** various problems in the backquote readmacro
3852 *** a bug in APROPOS
3853 *** probably some others that I'm not describing very well here,
3854 since the CVS log documents them by reference to sbcl-devel
3855 messages, and the SourceForge archives aren't working well.:-(
3856 ** Dan Barlow improved the Alpha port (and is making progress on the
3857 PPC port, for those of you who think different).
3858 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3859 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3860 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3861 continues to work on the SPARC port (for those of you in a position
3862 to look down upon our little PC-compatible boxes from a great height).
3863 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3864 and uses that copy, rather than the current dynamic value, when
3865 it's trying to decide whether to truncate output. Thus e.g.
3866 (let ((*print-lines* 50))
3867 (pprint-logical-block (stream nil)
3869 (let ((*print-lines* 8))
3870 (print (aref possiblybigthings i) stream)))))
3871 should now truncate the logical block only at 50 lines, instead of
3872 often truncating it at 8 lines, as it did before.
3873 * The doc/cmucl/ directory, containing old CMU CL documentation
3874 from the time of the fork, is no longer part of the base system.
3875 SourceForge has shut down its anonymous FTP service, and with it
3876 my original plan for distributing the old CMU CL documentation
3877 there. For now, if you need these files you can download an old
3878 SBCL source release and extract them from it.
3879 * The fasl file version number changed again, for dozens of reasons,
3880 some of which are apparent above.
3882 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3883 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3884 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3885 patch, so that DISASSEMBLE output is much nicer.
3886 * The code in the SB-PROFILE package now seems reasonably stable.
3887 I still haven't decided what the final interface should look like
3888 (I'd like PROFILE to interact cleanly with TRACE, since both
3889 facilities use function encapsulation) but if you have a need
3890 for profiling now, you can probably use it successfully with
3891 the current CMU-CL-style interface.
3892 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3893 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3894 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3895 link now returns the dangling link itself, and for similar
3896 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3897 link itself. (In these cases the old code signalled an error and
3898 looped endlessly, respectively.) Thus, DIRECTORY now works even
3899 in the presence of dangling and cyclic symbolic links.
3900 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3901 is now a supported extension again, since the consensus on
3902 sbcl-devel was that it can be useful for ordinary development
3903 work, not just for debugging SBCL itself.
3904 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3905 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3906 that currently-defined functions might be redefined later with
3907 different return types.
3908 * Hash tables can be printed readably, as inspired by CMU CL code
3909 of Eric Marsden and SBCL code of Martin Atzmueller.
3910 * better error handling in CLOS method combination, thanks to
3911 Martin Atzmueller porting Pierre Mai's CMU CL patches
3912 * more overflow fixes for >16Mbyte I/O buffers
3913 * A bug in READ has been fixed, so that now a single Ctrl-D
3914 character suffices to cause end-of-file on character streams.
3915 In particular, now you only need one Ctrl-D at the command
3916 line (not two) to exit SBCL.
3917 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3919 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3920 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3921 does the right thing.
3922 * The implementation of some type tests, especially for CONDITION
3923 types, is now tidier and maybe faster, due to CMU CL code
3924 originally by Douglas Crosher, ported by Martin Atzmueller.
3925 * Some math functions have been fixed, and there are new
3926 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3927 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3928 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3929 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3930 likely to be built into sbcl-0.7.0.)
3931 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3932 CL, ported to SBCL by Martin Atzmueller)
3933 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3934 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3935 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3936 * There's a new slam.sh hack to shorten the edit/compile/debug
3937 cycle for low-level changes to SBCL itself, and a new
3938 :SB-AFTER-XC-CORE target feature to control the generation of
3939 the after-xc.core file needed by slam.sh.
3940 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3941 COMPILE-FILE is no longer supported, so that now every function
3942 gets an entry point, so that block compilation looks a little
3943 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3944 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3945 returns the number of bytes consed since the system started,
3946 rather than the number consed since the first time the function
3947 was called. (The new definition parallels ANSI functions like
3948 CL:GET-INTERNAL-RUN-TIME.)
3949 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3950 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3951 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3952 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3953 * Fasl file version numbers are now independent of the target CPU,
3954 since historically most system changes which required version
3955 number changes have affected all CPUs equally. Similarly,
3956 the byte fasl file version is now equal to the ordinary
3959 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3960 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3961 is no longer recognized. I apologize for this, because it was
3962 listed in SB-EXT as a supported extension, but I found that
3963 its existing behavior was poorly specified, as well as incorrectly
3964 specified, and it looked like too much of a mess to straighten it
3965 out. I have enough on my hands trying to get ANSI stuff to work..
3966 * many patches ported from CMU CL by Martin Atzmueller, with
3967 half a dozen bug fixes in pretty-printing and the debugger, and
3968 half a dozen others elsewhere
3969 * fixed bug 13: Floating point infinities are now supported again.
3970 They might still be a little bit flaky, but thanks to bug reports
3971 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3972 as flaky as they were.
3973 * The --noprogrammer command line option is now supported. (Its
3974 behavior is slightly different in detail from what the old man
3975 page claimed it would do, but it's still appropriate under the
3976 same circumstances that the man page talks about.)
3977 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3978 are now supported, and enabled by default. Thus, the compiler can
3979 handle many floating point and complex operations much less
3980 inefficiently. (Thus e.g. you can implement a complex FFT
3982 * The compiler now detects type mismatches between DECLAIM FTYPE
3983 and DEFUN better, and implements CHECK-TYPE more correctly, and
3984 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3985 thanks to patches from Martin Atzmueller.
3986 * various fixes to make the cross-compiler more portable to
3987 ANSI-conforming-but-different cross-compilation hosts (notably
3988 Lispworks for Windows, following bug reports from Arthur Lemmens)
3989 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3990 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3991 fixed thanks to Pierre Mai's CMU CL patches.
3992 * fixes to keep the system from overflowing internal counters when
3993 it tries to use i/o buffers larger than 16M bytes
3994 * fixed bug 45a: Various internal functions required to support
3995 complex special functions have been merged from CMU CL sources.
3996 (When I was first setting up SBCL, I misunderstood a compile-time
3997 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3998 * improved support for type intersection and union, fixing bug 12
3999 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4000 more obscure bugs as well
4001 * some steps toward byte-compiling non-performance-critical
4002 parts of the system, courtesy of patches from Martin Atzmueller
4003 * Christophe Rhodes has made some debian packages of sbcl at
4004 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4005 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4006 stable, but are nonetheless usable. When he's ready, I'd be happy
4007 to add them to the SourceForge "File Releases" section. (And if
4008 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4009 * new fasl file format version number (because of changes in
4010 internal representation of (OR ..) types to accommodate the new
4011 support for (AND ..) types, among other things)
4013 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4014 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4016 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4018 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4019 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4020 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4021 * DESCRIBE now works on structure objects again.
4022 * Most function call argument type mismatches are now handled as
4023 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4024 know whether the function will be redefined before the call is
4025 executed. (The compiler could flag local calls with full WARNINGs,
4026 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4027 it doesn't keep track of enough information to know whether calls
4028 are local in this sense.)
4029 * Compiler output is now more verbose, with messages truncated
4030 later than before. (There should be some supported way for users
4031 to override the default verbosity, but I haven't decided how to
4032 provide it yet, so this behavior is still controlled by the internal
4033 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4034 src/compiler/ir1util.lisp.)
4035 * Fasl file format version numbers have increased again, because
4036 support for the Gray streams extension changes the layout of the
4037 system's STREAM objects.
4038 * The Gray subclassable streams extension now works, thanks to a
4039 patch from Martin Atzmueller.
4040 * The full LOAD-FOREIGN extension (not just the primitive
4041 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4042 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4043 but like most other programs, it defaults to copying the Unix
4044 environment from the original process instead of starting the
4045 new process in an empty environment.
4046 * Extensions which manipulate the Unix environment now support
4047 an :ENVIRONMENT keyword option which doesn't smash case or
4048 do other bad things. The CMU-CL-style :ENV option is retained
4049 for porting convenience.
4050 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4051 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4053 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4055 * A patch from Martin Atzmueller seems to have solved the SIGINT
4056 problem, and as far as we know, signal-handling now works cleanly.
4057 (If you find any new bugs, please report them!)
4058 * The system no longer defaults Lisp source file names to types
4059 ".l", ".cl", or ".lsp", but only to ".lisp".
4060 * The compiler no longer uses special default file extensions for
4061 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4062 seems to expect a single default extension for all compiled code,
4063 and there's no compelling reason to try to stretch the standard
4064 to allow two different extensions.) Instead, byte-compiled files
4065 default to the same extension as native-compiled files.
4066 * Fasl file format version numbers have increased again, because
4067 a rearrangement of internal implementation packages made some
4068 dumped symbols in old fasl files unreadable in new cores.
4069 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4070 many fewer weird special cases.
4071 * Bug #17 (differing COMPILE-FILE behavior between logical and
4072 physical pathnames) has been fixed, and some related misbehavior too,
4073 thanks to a patch from Martin Atzmueller.
4074 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4075 by Tim Moore, ported to SBCL by Martin Atzmueller.
4076 * Martin Atzmueller fixed several filesystem-related problems,
4077 including bug #36, in part by porting CMU CL patches, which were
4078 written in part by Paul Werkowski.
4079 * More compiler warnings in src/runtime/ are gone, thanks to
4080 more patches from Martin Atzmueller.
4081 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4084 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4086 * DESCRIBE now works on CONDITION objects.
4087 * The debugger now handles errors which arise when trying to print
4088 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4090 * The build system now uses an additional file, customize-target-features.lisp,
4091 to allow local modifications to the target *FEATURES* list. (The point of
4092 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4093 debugging features enabled, without having to worry about propagating it
4094 into everyone's system when I do a "cvs update".) When no
4095 customize-target-features.lisp file exists, the target *FEATURES* list
4096 should be constructed the same way as before.
4097 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4098 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4099 warn about behavior which is undefined under the ANSI spec. Note: This
4100 is specified by ANSI, but it's not very popular with programmers.
4101 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4102 macro in the SBCL sources for an example of a workaround which you
4103 might use to make portable ANSI-standard code which does what you want.
4104 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4105 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4106 when it's used as a non-toplevel form. (This is required in order
4107 to implement the DEFCONSTANT-EQX macro.)
4108 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4109 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4110 funny things, due to bugs in the implementation of EVAL-WHEN
4111 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4112 non-toplevel DEFCONSTANTs are uncommon.)
4113 * The core file version number and fasl file version number have been
4114 incremented, because the old noncompliant DEFCONSTANT behavior involved
4115 calling functions which no longer exist, and because I also took the
4116 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4117 * fixed bug 1 (error handling before read-eval-print loop starts), and
4118 redid debugger restarts and related debugger commands somewhat while
4120 ** The QUIT debugger command is gone, since it did something
4121 rather different than the SB-EXT:QUIT command, and since it never
4122 worked properly outside the main toplevel read/eval/print loop.
4123 Invoking the new TOPLEVEL restart provides the same functionality.
4124 ** The GO debugger command is also gone, since you can just invoke
4125 the CONTINUE restart directly instead.
4126 ** The TOP debugger command is also gone, since it's redundant with the
4127 FRAME 0 command, and since it interfered with abbreviations for the
4129 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4131 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4132 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4133 some porting work by Martin Atzmueller)
4134 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4135 with a boatload of patches which he ported to SBCL. Now that those
4137 ** The system tries to make sure that its low-priority messages
4138 are prefixed by semicolons, to help people who like to use
4139 syntax highlighting in their ILISP buffer. (This patch
4140 was originally due to Raymond Toy.)
4141 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4142 patches originally written by Raymond Toy.
4143 ** The compiler understands coercion between single-value and
4144 multiple-VALUES type expressions better, getting rid of some very
4145 weird behavior, thanks to patches originally by Robert MacLachlan
4146 and Douglas Crosher.
4147 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4148 lambda lists, thanks to a patch originally by Pierre Mai.
4149 ** The system no longer bogusly warns about "abbreviated type
4151 ** The compiler gets less confused by inlining and RETURN-FROM,
4152 thanks to some patches originally by Tim Moore.
4153 ** The system no longer hangs when dumping circular lists to fasl
4154 files, thanks to a patch originally from Douglas Crosher.
4155 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4156 undefined function error.
4157 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4158 in structure slot initforms) for now, documented workaround instead:-|
4159 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4160 * fixed bug 5: added stubs for various Gray stream functions called
4161 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4162 installed, at least appropriate type errors are generated
4163 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4164 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4165 consistently in DEFMETHOD forms.
4166 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4167 it doesn't seem to affect SBCL after all
4168 * The C runtime system now builds with better optimization and many
4169 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4171 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4173 * The system is now under CVS at SourceForge (instead of the
4174 CVS repository on my home machine).
4175 * The new signal handling code has been tweaked to treat register
4176 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4177 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4178 downstream, e.g. in debug-int.lisp, has implicit dependencies
4179 on the unsignedness of integer representation of machine words,
4180 and that caused the system to bomb out with infinite regress
4181 when trying to recover from type errors involving signed values,
4182 e.g. (BUTLAST '(1 2 3) -1).)
4183 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4184 (This was one of the bugs Peter Van Eynde reported back in July.)
4185 * The system now uses code inspired by Colin Walters' O(N)
4186 implementation of MAP (from the cmucl-imp@cons.org mailing
4187 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4188 inline the MAP operation, and there is more than one
4189 sequence argument to the MAP call (so that it can't just
4190 do ETYPECASE once and for all based on the type of the
4191 single sequence argument). (The old non-inline implementation
4192 of the general M-argument sequence-of-length-N case required
4193 O(M*N*N) time when any of the sequence arguments were LISTs.)
4194 * The QUIT :UNIX-CODE keyword argument has been renamed to
4195 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4196 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4198 * Raymond Wiker's patches to port dynamic loading from Linux to
4199 FreeBSD have been added.
4200 * The BUGS file is now more nearly up to date, thanks in large part
4201 to Martin Atzmueller's review of it.
4202 * The debugger now flushes standard output streams before it begins
4203 its output ("debugger invoked" and so forth).
4204 * The core version number and fasl file version number have both
4205 been incremented, because of incompatible changes in the layout
4207 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4208 used to not be called for a saved Lisp image.)
4209 * Martin Atzmueller's version of a patch to fix a compiler crash,
4210 as posted on sbcl-devel 13 September 2000, has been installed.
4211 * Instead of installing Martin Atzmueller's patch for the
4212 compiler transform for SUBSEQ, I deleted the compiler transform,
4213 and transforms for some similar consing operations.
4214 * A bug in signal handling which kept TRACE from working on OpenBSD
4216 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4217 away by constant folding
4218 * The system now defines its address space constants in one place
4219 (in the Lisp sources), and propagates them automatically elsewhere
4220 (through GENESIS and the sbcl.h file). Therefore, patching the
4221 address map is less unnecessarily tedious and error-prone. The
4222 Lisp names of address space constants have also been systematized.
4223 * CVS tags like dollar-Header-dollar have been removed from
4224 the sources, because they have never saved me trouble and
4225 they've been source of trouble working with patches and other
4226 diff-related operations.
4227 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4228 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4230 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4232 * The system has been ported to OpenBSD.
4233 * The system now compiles with a simple "sh make.sh" on the systems
4234 that it's supported on. I.e., now you no longer need to tweak
4235 text in the target-features.lisp-expr and symlinks in src/runtime/
4236 by hand, the make.sh takes care of it for you.
4237 * The system is no longer so grossly inefficient when compiling code
4238 involving vectors implemented as general (not simple) vectors (VECTOR T),
4239 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4240 which dares to use the various sequence functions on non-simple
4241 vectors, takes less of a performance hit.
4242 * There is now a primitive type predicate VECTOR-T-P
4243 to test for the (VECTOR T) type, so that e.g.
4244 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4245 can now be compiled with some semblance of efficiency. (The old code
4246 turned the type declaration into a full call to %TYPEP at runtime!)
4247 * AREF on (VECTOR T) is still not fast, since it's still compiled
4248 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4249 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4250 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4251 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4252 without making full calls to SUBTYPEP at runtime.
4253 (Some analogous efficiency issues for non-simple vectors specialized to
4254 element types other than T, or for non-simple multidimensional arrays,
4255 have not been addressed. They could almost certainly be handled the
4256 same way if anyone is motivated to do so.)
4257 * The changes in array handling break binary compatibility, so
4258 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4259 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4260 instead of (VALUES T T).
4261 * By following the instructions that Dan Barlow posted to sbcl-devel
4262 on 2 July 2000, I was able to enable primitive dynamic object
4263 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4264 functionality is not implemented (since it calls ld to resolve
4265 library references automatically, requiring RUN-PROGRAM for its
4266 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4267 try to resolve library references) is now supported.
4268 * The system now flushes the standard output streams when it terminates,
4269 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4270 them at several other probably-convenient times, e.g. in each pass of
4271 the toplevel read-eval-print loop, and after evaluating a form given
4272 as an "--eval" command-line option. (These changes were motivated by a
4273 discussion of stream flushing issues on cmucl-imp in August 2000.)
4274 * The source transform for TYPEP of array types no longer assumes
4275 that an array whose element type is a not-yet-defined type
4276 is implemented as an array of T, but instead punts, so that the
4277 type will be interpreted at runtime.
4278 * There is now some support for cross-compiling in make.sh: each of
4279 the phases of make.sh has its own script. (This should be transparent
4280 to people doing ordinary, non-cross-compile builds.)
4281 * Since my laptop doesn't have hundreds of megabytes of memory like
4282 my desktop machine, I became more motivated to do some items on
4283 my to-do list in order to reduce the size of the system a little:
4284 ** Arrange for various needed-only-at-cold-init things to be
4285 uninterned after cold init. To support this, those things have
4286 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4287 symbols with such names are now uninterned after cold init).
4288 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4289 fasl files for cold load.
4290 ** Remove the old compiler structure pooling code (which used to
4291 be conditional on the target feature :SB-ALLOC) completely.
4292 ** Redo the representation of some data in cold init to be more compact.
4293 (I also looked into supporting byte compiled code at bootstrap time,
4294 which would probably reduce the size of the system a lot, but that
4295 looked too complicated, so I punted for now.)
4296 * The maximum signal nesting depth in the src/runtime/ support code has
4297 been reduced from 4096 to 256. (I don't know any reason for the very
4298 large old value. If the new smaller value turns out to break something,
4299 I'll probably just bump it back up.)
4300 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4302 * Many, many bugs reported by Peter Van Eynde have been added to
4303 the BUGS list; some have even been fixed.
4304 * While enabling dynamic object file loading, I tried to make the
4305 code easier to understand, renaming various functions and variables
4306 with less ambiguous names, and changing some function calling
4307 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4308 * While trying to figure out how to do the OpenBSD port, I tried to
4309 clean up some of the code in src/runtime/. In particular, I dropped
4310 support for non-POSIX signal handling, added various comments,
4311 tweaked the code to reduce the number of compilation warnings, and
4312 renamed some files to increase consistency.
4313 * To support the new automatic configuration functionality in make.sh,
4314 the source file target-features.lisp-expr has been replaced with the
4315 source file base-target-features.lisp-expr and the machine-generated
4316 file local-target-features.lisp-expr.
4317 * fixed a stupid quoting error in make.sh so that using CMU CL
4318 "lisp -batch" as cross-compilation host works again
4320 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4322 * DESCRIBE no longer tries to call itself recursively to describe
4323 bound/fbound values, so that it no longer fails on symbols which are
4324 bound to themselves (like keywords, T, and NIL).
4325 * DESCRIBE now works on generic functions.
4326 * The printer now prints less-screwed-up representations of closures
4327 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4328 * A private symbol is used instead of the :EMPTY keyword previously
4329 used to mark empty slots in hash tables. Thus
4330 (DEFVAR *HT* (MAKE-HASH-TABLE))
4331 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4332 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4333 now does what ANSI says that it should. (You can still get
4334 similar noncompliant behavior if bang on the hash table
4335 implementation with all the symbols you get back from
4336 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4337 This breaks binary compatibility, since tests for equality to
4338 :EMPTY are wired into things like the macroexpansion of
4339 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4341 * There's now a minimal placeholder implementation for CL:STEP,
4342 as required by ANSI.
4343 * An obscure bug in the interaction of the normal compiler, the byte
4344 compiler, inlining, and structure predicates has been patched
4345 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4346 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4348 * Missing ordinary arguments in a macro call are now detected even
4349 when the macro lambda list contains &KEY or &REST.
4350 * The debugger no longer complains about encountering the top of the
4351 stack when you type "FRAME 0" to explicitly instruct it to go to
4352 the top of the stack. And it now prints the frame you request even
4353 if it's the current frame (instead of saying "You are here.").
4354 * As specified by ANSI, the system now always prints keywords
4355 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4357 * The default initial SIZE of HASH-TABLEs is now smaller.
4358 * Type information from CLOS class dispatch is now propagated
4359 into DEFMETHOD bodies, so that e.g.
4360 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4362 is now basically equivalent to
4363 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4364 (DECLARE (TYPE SINGLE-FLOAT X))
4366 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4367 operation, without having to do run-time type dispatch.
4368 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4369 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4370 * Since I don't seem to be making big file reorganizations very often
4371 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4372 is overflowing my ability to conveniently back them up), I've finally
4373 checked the system into CVS. (The CVS repository is on my home system,
4374 not at SourceForge -- putting it on SourceForge might come later.)
4375 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4376 high-level GC-NOTIFY-FOO functions send their output. (There's
4377 still very little control of where low-level verbose GC functions
4378 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4379 less than it used to -- the GC-NOTIFY-FOO functions are now under
4380 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4381 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4382 in only one place in the source code, and propagates it automatically
4383 everywhere that it's needed. Thus e.g. when I bump the version from
4384 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4385 * The C source files now include boilerplate legalese and documentation
4386 at the head of each file (just as the Lisp source files already did).
4387 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4388 to his page will be replaced with a link to his new CLiki service.
4390 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4392 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4393 * The build process now looks for GNU make under the default name "gmake",
4394 instead of "make" as it used to. If GNU make is not available as "gmake"
4395 on your system, you can change this default behavior by setting the
4396 GNUMAKE environment variable.
4397 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4398 can build without error under CMU CL.
4400 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4402 * There is now a partial SBCL user manual (with some new text and some
4403 text cribbed from the CMU CL manual).
4404 * The beginnings of a profiler have been added (starting with the
4405 CMU CL profiler and simplifying and cleaning up). Eventually the
4406 main interface should be through the TRACE macro, but for now,
4407 it's still accessed through vaguely CMU-CL-style functions and macros
4408 exported from the package SB-PROFILE.
4409 * Some problems left over from porting CMU CL to the new
4410 cross-compilation bootstrap process have been cleaned up:
4411 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4412 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4413 part when getting rid of the compiler *BACKEND* stuff.)
4414 ** The value of *NULL-TYPE* was screwed up, because it was
4415 being initialized before the type system knew the final
4416 definition of the 'NULL type. This screwed up several key
4417 optimizations in the compiler, causing inefficiency in all sorts
4418 of places. (I found it because I wanted to understand why
4419 GET-INTERNAL-RUN-TIME was consing.)
4420 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4421 PROCLAIM FTYPE information. Unfortunately this broke binary
4422 compatibility again, since now the forms output by DEFGENERIC
4423 to refer to functions which didn't exist in 0.6.3.
4424 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4425 can use the new (as of 0.6.3) transform for SOME into MAP into
4427 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4428 values to (INTEGER 0 1000000), so that the time code will no longer
4429 occasionally get blown up by Linux returning 1000000 microseconds
4430 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4431 its output conform to the ANSI spec. (Alas, this makes its output
4432 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4433 * A full call to MAP NIL with a single sequence argument no longer conses.
4434 * fixes to problems pointed out by Martin Atzmueller:
4435 * The manual page no longer talks about multiprocessing as though
4436 it were currently supported.
4437 * The ILISP support patches have been removed from the distribution,
4438 because as of version 5.10.1, ILISP now supports SBCL without us
4439 having to maintain patches.
4440 * added a modified version of Raymond Toy's recent CMU CL patch for
4441 EQUALP comparison of HASH-TABLE
4443 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4445 * The system still can't cross-compile itself with
4446 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4447 entails), but at least it can compile more of itself that way
4448 than it used to be able to, and various buglets which were uncovered
4449 by trying to cross-compile itself that way have now been fixed.
4450 * This release breaks binary compatibility again. This time
4451 at least I've incremented the FASL file format version to 2, so that the
4452 problem can be detected reliably instead of just causing weird errors.
4453 * various new style warnings:
4454 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4455 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4456 ** using the lexical binding of a variable named in the *FOO* style
4457 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4458 as specified by ANSI.
4459 * *RANDOM-STATE* is no longer automatically initialized from
4460 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4461 default behavior of the system is to repeat its behavior every time
4462 it's run. If you'd like to change this behavior, you can always
4463 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4464 old convention there was no comparably easy way to get the system to
4465 repeat its behavior every time it was run.
4466 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4467 FTYPE declarations has been removed, in favor of their ANSI
4468 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4469 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4470 the types of their sequence arguments can be determined at compile time.
4471 This is done through a new open code expansion for MAP which eliminates
4472 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4473 argument types can be determined at compile time.
4474 * The optimizer now transforms COERCE into an identity operation when it
4475 can prove that the coerced object is already of the correct type. (This
4476 can be a win for machine generated code, including the output of other
4477 optimization transforms, such as the MAP transform above.)
4478 * Credit information has been moved from source file headers into CREDITS.
4479 * Source file headers have been made more standard.
4480 * The CASE macro now compiles without complaining even when it has
4483 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4485 * (Note that the way that the PCL macroexpansions were rewritten
4486 to accommodate the change in DEFGENERIC below breaks binary
4487 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4488 not run under sbcl-0.6.2. Once we get out of alpha releases,
4489 i.e. hit release 1.0.0, we'll probably try to maintain binary
4490 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4491 and sbcl-1.4.4. Until then, however, it might be fairly common
4492 for maintenance releases to break binary compatibility.)
4493 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4495 * The reporting of unhandled signals has been changed to print some
4496 explanatory text as well as the report form. (Previously only
4497 the report form was printed.)
4498 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4499 it defines, so that the compiler no longer issues undefined function
4500 warnings for compiled-but-not-yet-loaded generic functions.
4501 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4502 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4503 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4504 section of the ANSI spec are supported.
4505 * The "" nickname for the "KEYWORD" package has been removed.
4506 The reader still handles symbol tokens which begin with a package marker
4507 as keywords, but it doesn't expose its mechanism for doing so in the
4508 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4509 * The system now issues STYLE-WARNINGs for contradictory TYPE
4510 proclamations. (Warnings for contradictory FTYPE proclamations would
4511 be nice too, but those can't be done usefully unless the type system
4512 is made smarter about FUNCTION types.)
4513 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4514 systematized, so that "*target-*.lisp is supposed to exist only on the
4515 target and imply that there's a related file which exists on the
4516 host, and *host-*.lisp is supposed to exist only on the host and imply
4517 that there's a related file which exists on the target. This involves a
4518 lot of renaming. Hopefully the acute confusion caused by the renaming
4519 will be justified by the reduction in chronic confusion..
4520 ** runtime-type.lisp -> early-target-type.lisp
4521 ** target-type.lisp -> late-target-type.lisp
4522 ** early-host-format.lisp -> early-format.lisp
4523 ** late-host-format.lisp -> late-format.lisp
4524 ** host-error.lisp -> misc-error.lisp
4525 ** early-error.lisp -> early-target-error.lisp
4526 ** late-error.lisp -> late-target-error.lisp
4527 ** host-defboot.lisp -> early-defboot.lisp
4528 ** code/misc.lisp -> code/target-misc.lisp
4529 ** code/host-misc.lisp -> code/misc.lisp
4530 ** code/numbers.lisp -> code/target-numbers.lisp
4531 ** code/early-numbers.lisp -> numbers.lisp
4532 ** early-host-type.lisp -> early-type.lisp
4533 ** late-host-type.lisp -> late-type.lisp
4534 ** host-typep.lisp -> typep.lisp
4535 ** load.lisp -> target-load.lisp
4536 ** host-load.lisp -> load.lisp
4537 ** host-disassem.lisp -> disassem.lisp
4538 ** host-insts.lisp -> insts.lisp
4539 ** byte-comp.lisp -> target-byte-comp.lisp
4540 ** host-byte-comp.lisp -> byte-comp.lisp
4541 ** host-signal.lisp -> signal.lisp
4542 ** host-defstruct.lisp -> defstruct.lisp
4543 ** late-target-type.lisp -> deftypes-for-target.lisp
4544 Furthermore, several other previously target-only files foo.lisp (e.g.
4545 hash-table.lisp and random.lisp) have been split into a target-and-host
4546 foo.lisp file and a target-only target-foo.lisp file, with their key type
4547 definitions in the target-and-host part, so that the cross-compiler will
4548 know more about target types.
4549 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4550 gone away. In their place are various *BACKEND-FOO* variables
4551 corresponding to the slots of the old structure.
4552 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4553 into the target SBCL has been fixed.
4554 * The chill.lisp system for loading cold code into a running SBCL
4556 * Support for the CMU CL "scavenger hook" extension has been removed.
4557 (It was undocumented and unused in the CMU CL sources that SBCL was
4558 derived from, and stale in sbcl-0.6.1.)
4559 * Various errors in the cross-compiler type system were detected
4560 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4561 (enabling various consistency checks). Many of them were fixed,
4562 but some hard problems remain, so the compiler is back to
4563 running without *TYPE-SYSTEM-INITIALIZED* for now.
4564 * As part of the cross-compiler type system cleanup, I implemented
4565 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4566 * I have started adding UNCROSS calls throughout the type system
4567 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4568 on cross-compiler input files will be able to go away, and various
4570 * CONSTANTP now returns true for quoted forms (as explicitly required
4573 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4575 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4576 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4577 (MAKE-LIST -1). In the longer term, it ought to become true
4578 that declarations are assertions even at SAFETY 1. For now, it's not
4579 quite true even at SAFETY 3, but it's at least more nearly true..
4580 (Note that this change seems to increases the size of the system by
4581 O(5%) and to decrease the speed of the compiler by 20% or more.)
4582 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4583 for the problem of printing dozens of lines of distracting information
4584 about low-level system machinery as part of the top stack frame
4585 on entry to the debugger when an undefined function was called.
4586 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4587 is not reset to COMMON-LISP-USER.
4588 * Compilation of stuff related to dyncount.lisp has been made conditional
4589 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4590 smaller. The various dyncount-related symbols have been moved into
4591 a new "SB-DYNCOUNT" package.
4592 * tty-inspect.lisp has been renamed to inspect.lisp.
4593 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4594 feature has gone away. (When we eventually port to other flavors of
4595 libc and/or Unix, we'll try to make the differences between flavors
4596 invisible at the user level.)
4597 * Various other *FEATURES* tags, and/or their associated conditionals,
4598 have been removed if obsolescent, or given better documentation, or
4599 sometimes given more-mnemonic names.
4601 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4603 * tidied up "make.sh" script
4604 * tidied up system directory structure
4605 * better "clean.sh" behavior
4606 * added doc/FOR-CMUCL-DEVELOPERS
4607 * many many small tweaks to output format, e.g. removing possibly-confusing
4608 trailing #\. character in DESCRIBE-INSTANCE
4609 * (EQUALP #\A 'A) no longer signals an error.
4610 * new hashing code, including EQUALP hashing
4611 * tidied up Lisp initialization and toplevel
4612 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4613 * command line argument processing
4614 * added POSIX-GETENV function to deal with Unix-ish environment variables
4615 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4616 terminating SBCL on EOF
4617 * non-verbose GC by default
4618 * There is no more "sbcl" shell script; the sbcl file is now the C
4619 runtime executable (just like CMU CL).
4620 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4622 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4623 symbol and package information as Lisp native symbol and package objects
4624 instead of strings naming symbols and strings naming packages. This way,
4625 whenever packages are renamed (as in warm init), debug information is
4626 transformed along with everything else.
4627 * tweaked the optimization policy declarations which control the building
4628 of SBCL itself. Now, among other things, the system no longer saves
4629 source location debugging information. (This helps two problems at once
4630 by reducing SBCL size and by keeping SBCL from trying to look for its
4631 sources -- which may not exist -- when reporting errors.)
4632 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4633 debugging and testing purposes
4634 * cleaned up printing, making the printer call PRINT-OBJECT for
4635 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4636 methods, giving nearly-ANSI behavior
4637 * converted almost all special variables to use *FOO* naming convention
4638 * deleted PARSE-TIME functionality, since it can be done portably
4639 * moved some files out of cold init into warm init
4640 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4642 * regularized formatting of source files
4643 * added an install.sh script
4644 * fixed ridiculous memory usage of cross-compiler by making
4645 compiler/alloc.lisp not try to do pooling unless it can hook
4646 itself into the GC of the cross-compilation host. Now the system
4647 builds nicely on my old laptop.
4648 * added :SB-ALLOC in target-features.lisp-expr
4649 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4650 was not implemented)
4651 * re-did condition handling and note reporting in the compiler. Notes
4652 are no longer handled by signalling conditions. Style warnings
4653 and warnings are handled more correctly and reported in such a way
4654 that it's easy to find one or the other in your output (so that you
4655 can e.g. figure out which of many problems caused COMPILE-FILE to
4657 * changed the severity of several compiler warnings from full WARNING
4658 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4659 compiler note reporting so that it doesn't use the condition system
4660 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4661 COMPILE-FILE command)
4662 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4663 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4664 no longer supported, since their implementation was deeply intertwingled
4665 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4666 * removed bogus "support" for compiler macros named (SETF FOO), and
4667 removed the compiler macro for SETF INFO (but only after making a fool
4668 of myself on the cmucl-imp mailing list by posting a bogus patch for
4669 DEFINE-COMPILER-MACRO..)
4670 * Compiled files containing forms which have side effects on the Lisp
4671 reader (such as DEFPACKAGE forms) are now handled more correctly.
4672 (Compiler queuing of top level lambdas has been suppressed by setting
4673 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4674 * deleted various currently-unused source files, e.g. gengc.lisp. They
4675 may be added back at some point e.g. when porting to other architectures,
4676 but until they are it's distracting to distribute them and to try to
4678 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4679 there were so many of them they're just distractions, and UNCROSS is
4680 known to be able to handle the current sources
4681 * moved PROFILE functionality into TRACE, so that it will be clear
4682 how the wrapping and unwrapping of functions when you profile them
4683 interacts with the wrapping and unwrapping of functions when you
4684 trace them. (Actually, the functionality isn't there yet, but at least
4685 the interface specification is there. Hopefully, the functionality will
4686 arrive with some future maintenance release.)
4687 * removed host-oops.lisp
4688 * changed signature of QUIT function to allow UNIX-CODE argument
4689 * fixed READ-SEQUENCE bug
4690 * tweaked verbose GC output so that it looks more like the progress
4691 output that ANSI specifies for functions like LOAD
4692 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4693 * added <http://sbcl.sourceforge.com> to the banner information printed by