1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.18 relative to 1.0.17:
3 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
4 profiles only the current thread.
5 * minor incompatible change: changes to SYMBOL-VALUE of constants
6 defined with DEFCONSTANT now signal an error.
7 * enhancement: SB-SPROF now has support for wallclock profiling,
8 and is also able to profile specific threads. REPORT output
9 has also additional sorting options.
10 * optimization: structure allocation has been improved
11 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
12 ** out of line constructors are ~10% faster.
13 ** inline constructors are ~15% faster.
14 ** inline constructors are capable of dynamic extent allocation
15 (generally on x86 and x86-64, in some cases on other platforms
17 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
19 * optimization: file compiler is now able to coalesce non-circular
20 lists, non-base strings, and bit-vectors. Additionally, constants
21 are never referenced through SYMBOL-VALUE at runtime.
22 * optimization: code defining methods on PRINT-OBJECT (and other
23 generic functions in the COMMON-LISP package) now loads faster.
24 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
26 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
27 fasl is now deleted. (reported by Attila Lendvai)
28 * bug fix: READ-LINE always returned NIL for the last line in files.
29 (reported by Yoshinori Tahara)
30 * fixed some bugs revealed by Paul Dietz' test suite:
31 ** NIL is a valid function name (regression at 1.0.13.38)
32 ** FILL on lists was missing its return value (regression at 1.0.12.27)
33 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
34 fill pointers properly (regression at 1.0.12.23)
35 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
36 displacement indices properly (regression at 1.0.12.23)
38 changes in sbcl-1.0.17 relative to 1.0.16:
39 * temporary regression: user code can no longer allocate closure
40 variable storage on stack, due to bug 419 without explicitly
41 requesting it. Please consult sbcl-devel for advice if you need to
42 use this feature in the meanwhile.
43 * new feature: runtime argument --control-stack-size can be used to
44 adjust thread default control stack size.
45 * enhancement: improved TIME output
46 ** all times are reported using the measured accuracy (milliseconds
47 for real and GC times, microseconds for everything else.)
48 ** processor cycle counts on x86 and x86-64.
49 ** interpreted forms are counted for both evaluator modes.
50 ** number of lambdas converted by the compiler is reported.
51 ** CPU percentage report (computed from real and total run time.)
52 ** more comprehensive run time reporting, using a condenced format
53 ** interperted form, lambda, and page fault counts are omitted
55 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
57 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
58 * optimization: two argument forms of LAST are upto ~10% faster
59 in normal SPEED policies.
60 * optimization: NCONC no longer needs to heap cons its &REST list
61 in normal SPEED policies.
62 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
64 * bug fix: UNION and NUNION work with :TEST-NOT once more,
65 regression since 1.0.9.1. (thanks to Eric Marsden)
66 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
67 since 1.0.15.36. (thanks to Paul Khuong)
68 * bug fix: LAST when always returned the whole list when given a bignum
69 as the second argument.
70 * bug fix: dynamic extent allocation of nested lists and vectors
71 could leak to otherwise accessible parts.
72 * bug fix: invalid optimization of heap-allocated alien variable
74 * bug fix: fasl header checking is less vulnerable to different
75 platform word lengths.
76 * bug fix: more correct assembler syntax for GNU binutils
77 2.18.50.0.4 support. (thanks to Marijn Schouten)
78 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
80 * bug fix: the fopcompiler can handle LOCALLY forms (with no
81 declarations) successfully. (reported by Attila Lendvai)
83 changes in sbcl-1.0.16 relative to 1.0.15:
84 * minor incompatible change: revert the changes to sb-posix's error
85 signaling added in 1.0.14.
86 * minor incompatible change: change PROBE-FILE back to returning
87 NIL whenever we can't get a truename, as was the case before 1.0.14.
88 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
89 inherits from ERROR instead of just CONDITION.
90 * new feature: SB-INTROSPECT can provide source locations for instances
91 as well. (thanks to Tobian Ritterweiler)
92 * optimization: binding special variables now generates smaller code
93 on threaded platforms.
94 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
95 and cases where no :TEST is given but the compiler can infer that
96 the element to search is of type (OR FIXNUM (NOT NUMBER)).
97 * optimization: better LOGNOT on fixnums.
98 * optimization: modular arithmetic for a particular requested width
99 is implemented using a tagged representation unless a better
100 representation is available.
101 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
102 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
103 for wellformedness and returns a specialized vector. (reported by
104 Francois-Rene Rideau)
105 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
106 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
107 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
108 unscheduling timer at the same time as another timer fires.
109 * bug fix: don't reschedule timers for dead threads.
110 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
111 * bug fix: copying output from RUN-PROGRAM to a stream signalled
112 bogus errors if select() was interrupted.
113 * enhancement: add support for fcntl's struct flock to SB-POSIX.
115 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
116 * enhancement: cleaner backtraces for interactive interrupts, as
117 well as other cases where the interesting frames used to be
118 obscured by interrupt handling frames.
119 * enhancement: untracing a whole package using (UNTRACE "FOO") is
120 now supported, and tracing a whole package using (TRACE "FOO") now
121 traces SETF-functions as well.
122 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
123 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
124 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
125 * unreadably printed representation of hash-tables now includes
127 * bug fix: partially fixed #188: type propagation from assignments
128 is now more efficient.
129 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
130 'DOUBLE-FLOAT) are not flushable.
131 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
132 full address of the object, and none of the tag bits.
133 * bug fix: readably printing hash-tables now respects other printer
134 control variables. (reported by Cedric St-Jean)
135 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
136 keyword with MAKE-HASH-TABLE.
137 * bug fix: export SB-POSIX:MKSTEMP.
138 * bug fix: SORT was not interrupt safe.
139 * bug fix: XREF accounts for the last node of each basic-block as
141 * bug fix: MAKE-INSTANCE optimizations interacted badly with
142 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
143 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
144 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
145 create obsolete instances in the case of redefinition or
146 obsoletion of a superclass. (thanks to Andy Hefner)
147 * bug fix: Support for the Alpha architecture has been revived; it had
148 suffered somewhat from lack of maintenance since sbcl-1.0.
149 * improvements to the Windows port:
150 ** The system detects the codepage to use at startup, instead of
151 using the value from the saved core. (thanks to Kei Suzuki)
153 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
154 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
155 (see documentation for details.)
156 * revived support for OpenBSD (contributed by Josh Elsasser)
157 * partially fixed bug #108: ROOM no longer suffers from occasional
158 (AVER (SAP= CURRENT END)) failures.
159 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
160 bodies no longer cause a WARNING to be signalled. (reported by
162 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
163 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
164 the bug in TRUNCATE.) (reported by Michael Weber)
165 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
166 no samples. (reported by Andy Hefner)
167 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
168 no longer appear as (NIL ...) frames in backtraces.
169 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
170 is now actually exported from SB-EXT as documented. (reported by
172 * bug fix: sb-aclrepl now correctly understands how to inspect
173 single-floats on 64-bit platforms where single-floats are not boxed.
174 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
175 yet been finalized. (reported by Levente Meszaros)
176 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
177 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
178 SBCL-specific optimize qualities.
180 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
181 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
182 an executable in the search path, and does so in the child
183 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
184 been removed; it can be found in the CVS history, for somebody who
185 needs that search behavior (see the manual).
186 * minor incompatible change: compiler policy re. weakening type
187 checks has changed: now type checks are weakened only if SAFETY < 2
189 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
190 unparsing of directory pathnames as files. Analogously,
191 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
192 filename to parse into a directory pathname.
193 * enhancement: implicit generic function creation now signals a
194 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
195 users can bind handlers for and muffle around calls to LOAD.
196 * enhancement: RUN-PROGRAM allows unicode arguments and environments
197 to be used (using the default stream external format), and allows
198 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
199 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
200 strings and vectors whose element-type or simplicity is not fully
201 known at compile-time.
202 * optimization: STRING-TRIM and related functions no longer allocate
203 a new string when no trimming needs to be performed. These functions
204 are also faster than before when the input string has been declared
206 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
207 * optimization: READ-LINE is significantly faster for files containing
209 * optimization: non-open coded uses of character comparison operators
210 (e.g. char=) no longer cons when called with more than one parameter
211 on platforms supporting dynamic-extent allocation.
212 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
213 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
214 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
216 * bug fix: some sequence functions elided bounds checking when
218 * bug fix: too liberal weakening of union-type checks when SPEED >
220 * bug fix: more bogus fixnum declarations in ROOM implementation
223 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
224 * new feature: MAKE-HASH-TABLE now experimentally accepts a
225 :SYNCHRONIZED argument, which makes the hash-table safe for
226 concurrent accesses (but not iteration.) See also:
227 SB-EXT:WITH-LOCKED-HASH-TABLE, and
228 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
229 * optimization: CONCATENATE on strings is an order of magnitude faster
230 in code compiled with (> SPEED SPACE).
231 * optimization: SUBSEQ is ~50% faster on lists.
232 * bug fix: bug 417 fixed -- source location reporting is now more robust.
233 * bug fix: SUBSEQ on a list will now correctly signal an error if if
234 END is smaller then START.
235 * bug fix: SB-PROFILE will no longer report extra consing for nested
236 calls to profiled functions.
237 * bug fix: ROOM implementation had bogus fixnum declarations which
238 could cause type-errors when calling ROOM on large images.
239 * bug fix: if file compilation is aborted, the partial fasl is now
240 deleted, and COMPILE-FILE returns NIL as the primary value.
241 * bug fix: number of thread safety issues relating to SBCL's internal
242 hash-table usage have been fixed.
243 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
244 be returned from its body when the values were being returned
245 using unknown-values return convection and the W-P-O was wrapped
246 inside an UNWIND-PROTECT.
247 * bug fix: sb-posix should now compile again under Windows, enabling
250 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
251 * incompatible change: hash-table accessor functions are no longer
252 automatically protected by locks. Concurrent accesses on the same hash-table
253 from multiple threads can give inconsistent results or even corrupt the
254 hash-table completely. Multi-threaded applications should do their own
255 locking at the correct granularity. In the current implementation it is
256 still safe to have multiple readers access the same table, but it's not
257 guaranteed that this property will be maintained in future releases.
258 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
259 and will signal an error at runtime.
260 * enhancement: SB-THREAD package now exports a semaphore interface.
261 * enhancement: CONS can now stack-allocate on x86 and
262 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
264 * enhancement: nested lists can now be stack allocated on
265 platforms providing stack allocation support.
266 * enhancement: dynamic-extent support has been extended to support
267 cases where there are multiple possible sources for the stack
269 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
270 if the mutex is uncontested on Linux.
271 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
272 as specified by the CLHS. (thanks to Tobias Rittweiler)
273 * bug fix: NaN comparison now works on x86-64.
274 * bug fix: CLOSE :ABORT T on a stream with pending output now
276 * bug fix: instances of non-standard metaclasses using standard
277 instance structure protocol sometimes missed the slot type checks
279 * bug fix: known functions can be inlined in high-debug code.
281 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
282 * minor incompatible change: the MSI installer on Windows no longer
283 associates .lisp and .fasl files with the installed SBCL.
284 * minor incompatible change: :UNIX is no longer present in *FEATURES*
285 on Windows. (thanks to Luis Oliviera)
286 * new feature: SB-CLTL2 contrib module now implements
287 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
288 * optimization: scavenging weak pointers is now more efficient,
289 requiring O(1) instead of O(N) per weak pointer to identify
290 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
291 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
292 method bodies using constant slot-names when the first argument is
293 a specializer parameter for the method.
294 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
295 names, when the class of the instance is a direct instance
296 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
297 as slow as the constant slot-name case.)
298 * optimization: member type construction is now O(N) instead
300 * optimization: UNION and NUNION are now O(N+M) for large
301 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
303 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
304 now more readable in environments like Slime which display it.
305 (thanks to Tobias C. Rittweiler)
306 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
307 was able to infer the correct argument type for the object on which
308 the CAS operation was being performed.
309 * bug fix: copy propagation interfered with parallel assignment
310 semantics in local calls. (reported by Paul Khuong)
311 * bug fix: the signed modular fixnum shift compiled to wrong code on
312 x86 and x86-64. (spotted by a slight modification to some of
315 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
316 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
317 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
318 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
320 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
321 and generic function now print the object identity for anonymous
322 instances. (thanks to Attila Lendvai)
323 * enhancement: as an extension to MOP, SBCL now supports SETF of
324 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
325 (thanks to Attila Lendvai)
326 * enhancement: sb-cover has an alternate annotation mode which puts
327 the form annotations at the car of the form, instead of annotating
328 it completely. The benefit of this mode is that it shows better
329 which forms were instrumented by the compiler.
330 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
331 by printer control variables. (reported by Dan Corkill)
332 * bug fix: system leaked memory when delayed output was performed by
333 the OS in smaller chunks then expected. (thanks to David Smith)
334 * bug fix: system leaked memory when file streams were not closed
336 * bug fix: large objects written to slow streams that were modified
337 after the write could end up with the modified state written to
338 the underlying file descriptor.
339 * bug fix: multiple threads operating in parallel on the same stream
340 could cause buffer-overflows.
341 * bug fix: source location information is stored correctly
342 (broken since 1.0.6). This bug would generally show up as the
343 Slime debugger highlighting the wrong form when the sldb-show-source
345 * bug fix: Branch forms are again annotated as branches in the sb-cover
347 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
348 on x86-64. (reported by Gregory Vanuxem)
349 * bug fix: EQUALP could return wrong results for structures with raw
350 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
351 word). (reported by Vjacheslav Fyodorov)
352 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
355 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
356 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
357 atomic compare-and-swap operations on threaded platforms.
358 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
359 allows assigning a global minimum value to optimization qualities
360 (overriding proclamations and declarations).
361 * enhancement: closed over variables can be stack-allocated on x86
363 * performance bug fix: GETHASH and (SETF GETHASH) are once again
365 * optimization: slot definition lookup is now O(1). This speeds up
366 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
367 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
368 * optimization: ASSOC and MEMBER can now be open-coded for all
369 combinations of keyword arguments when second argument is constant
370 and SPEED >= SPACE. In other cases a specialized version is
372 * bug fix: using obsoleted structure instances with TYPEP and
373 generic functions now signals a sensible error.
374 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
375 (reported by Kristoffer Kvello)
376 * bug fix: backtrace construction is now more careful when making
377 lisp-objects from pointers on the stack, to avoid creating bogus
378 objects that can be seen by the GC.
379 * bug fix: defaulting of values in contexts expecting more than 7
380 variables now works on x86-64. (reported by Christopher Laux)
381 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
383 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
384 as the property-list of a symbol.
385 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
386 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
387 situations requested, are once again file-compileable. (reported
390 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
391 * MOP improvement: support for user-defined subclasses of
392 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
393 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
394 the expansion of DEFMETHOD, is responsible for generating a form
395 which creates a list of specializers when evaluated. Additional
396 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
397 debugging and introspective support.
398 * minor incompatible change: the (unsupported) spinlock interface
399 has changed: free spinlock now has the value NIL, and a held spinlock
400 has the owning thread as its value.
401 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
402 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
404 * enhancement: name of a socket-stream is now "a socket" instead of
406 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
407 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
408 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
409 for generic functions. (Thanks to Tobias C. Rittweiler)
410 * optimization: bignum printing speed has been improved by 20-40%
411 (depending on the bignum size.)
412 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
414 * bug fix: the cache used by the CLOS to store precomputed effective
415 methods, slot offsets, and constant return values is now thread and
417 * bug fix: generic function dispatch function updating is now thread
418 and interrupt safe (in the sense that the known issues have been
420 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
421 * bug fix: interning EQL-specializers is now thread and interrupt safe.
422 * bug fix: asdf systems with dependencies to the SB-POSIX or
423 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
424 * bug fix: interrupt safety of applicable method computation has been
427 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
428 * new contrib: sb-cover, an experimental code coverage tool, is included
430 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
431 significantly faster.
432 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
433 produce more efficient code on x86-64 if the compiler can determine
434 that (+ INDEX <constant>) does not require a bounds check and FOO
435 has an element type at least 8 bits wide.
436 * enhancement: a new, experimental synchronous timeout facility is
437 provided. Refer to SB-SYS:WITH-DEADLINE for details.
438 * enhancement: when a symbol name conflict error arises, the
439 conflicting symbols are always printed with a package prefix.
440 (thanks to Kevin Reid)
441 * enhancement: stepping is now once again supported on the SPARC and
442 MIPS platforms. (It is also now more likely to work on CheneyGC
444 * enhancement: sb-sprof can now also track and report accurate call
446 * bug fixes: the treatment of non-standard subclasses of
447 SB-MOP:SPECIALIZER is more correct.
448 * incompatible change: PURIFY no longer copies the data from the
449 dynamic space into the static and read-only spaces on platforms
450 that use the generational garbage collector
451 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
453 * bug fix: GC race condition occasionally resulting in crashes with
454 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
456 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
458 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
459 a STYLE-WARNING to be signalled (regression from 1.0.4.)
460 * bug fix: an asynchronous interrupt could previously leave the
461 system running with GC inhibited.
462 * bug fix: a DECLARE form evaluated at top-level now causes an error
463 rather than silently (or verbosely) returning NIL.
464 * bug fix: trying to dissassemble functions compiled at high DEBUG could
465 result in a error being signalled due to source form lookup errors.
466 (reported by Peter Graves)
468 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
469 * incompatible change: removed writer methods for host-ent-name,
470 host-ent-addresses -- changing the values did not update the DNS
472 * minor incompatible change: changed experimental JOIN-THREAD interface
473 * documentation: the manual now lists reader and writer methods
474 in class slot documentation sections. (thanks to Richard M Kreuter)
475 * documentation: unwinding from asyncronous events has been
476 documented as unsafe.
477 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
478 in multithreaded application code.
479 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
480 platforms. (thanks to James Anderson for the optimization hint)
481 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
483 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
484 variants no longer cons.
485 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
486 their NOT- variants no longer cons.
487 * optimization: EQUAL hash tables no longer use SXHASH for objects
488 of all data types, but instead use an EQL hash for types for which
489 EQUAL is the same as EQL.
490 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
491 are significantly faster.
492 * optimization: new STRING-OUTPUT-STREAM implementation is much
493 faster for large outputs and conses 30% less on average.
494 * enhancement: XREF information is now collected for references made
495 to global variables using SYMBOL-VALUE and a constant argument.
496 * enhancement: SIGINT now causes a specific condition
497 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
498 * bug fix: FILE-POSITION used to signal an error in some cases where
499 ANSI requires it to return NIL.
500 * bug fix: ADJUST-ARRAY is now interrupt-safe.
501 * bug fix: adding and removing fd-handlers is now interrupt-safe.
502 * bug fix: inlined calls to C now ensure 16byte stack alignment on
504 * bug fix: bad type declaration in the CLOS implementation has
505 been fixed. (reported by James Anderson)
506 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
507 (thanks to Lutz Euler)
508 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
509 required by the CLHS. (reported by Samium Gromoff)
510 * bug fix: dead unbound variable references now signal an error.
511 (reported by Marco Monteiro)
512 * bug fix: / with an unused value was being deleted in safe code.
513 (thanks to Marco Monteiro and Kevin Reid)
514 * bug fix: number of characters that can be written onto a single
515 line in a file is unlimited.
516 * bug fix: some GC deadlocks caused by asynchronous interrupts have
517 been fixed by inhibiting interrupts for when GC is disabled.
518 * bug fix: some interrupt safety issues with GETHASH, (SETF
519 GETHASH), CLRHASH and REMHASH have been fixed.
520 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
521 specifier no longer causes infinite recursion.
522 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
523 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
524 * bug fix: an &environment argument with the correct variable information
525 is passed to macros that are expanded during byte compilation.
526 (reported by Samium Gromoff)
527 * bug fix: a logic error was causing the hash function for bignums to
528 have excessive amounts of collisions. (reported by Faré Rideau)
529 * bug fix: modifying the contents of an array could change the return
530 value of SXHASH on that array, which is only allowed for strings
531 and bit vectors. (bug introduced in 0.9.16)
532 * improvement: the x86-64/darwin port now passes all tests (except
533 for the debugger tests) but should still be considered
534 experimental until this is fixed.
535 * improvement: a style-warning is signaled for CASE (etc) clauses with
536 duplicate keys. (thanks to Kevin Reid)
537 * improvement: macos/x86 and macos/x86-64 now use mach exception
538 handlers for dealing with illegal instructions (for trapping and
539 error handling) and memory protection violations (for GC).
541 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
542 * new platform: experimental support for x86-64/darwin (MacOS).
543 * incompatible change: the thread-safe (on most platforms) getaddrinfo
544 and getnameinfo sockets functions are used instead of gethostbyaddr
545 and gethostbyname, on platforms where the newer functions are available.
546 As a result, the ALIASES field of HOST-ENT will always be NIL on these
548 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
549 don't print the startup banner, but behave as if --noinform was passed
550 as a command line argument. (thanks to Kevin Reid)
551 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
552 * optimization: code using alien values with undeclared types is much faster.
553 * optimization: the compiler is now able to open code SEARCH in more cases.
554 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
555 * bug fix: using standardized COMMON-LISP special variables as loop
556 variables no longer signals bogus package lock violations. (reported
558 * bug fix: declaring local loop variables to be of a range-limited type
559 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
560 (reported by Andras Simon)
561 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
562 bugs remain on x86-64.)
563 * bug fix: the #= and ## reader macros now interact reasonably with
564 funcallable instances.
565 * bug fix: type-checks for function arguments were compiled using the
566 compiler policy settings of the wrong lexical environment (in 1.0.2
568 * bug fix: SHADOW accepts characters as string designators, as required
569 by the spec (thanks to Eric Marsden)
570 * bug fix: fixed GC safety issues when foreign functions are called with
571 non-base strings as arguments
572 * bug fix: more consistent error output for fatal-compiler-warnings, like
574 * bug fix: functions with proper names were showing up as NIL in
575 backtraces (reported by Edi Weitz, regression in 1.0.2)
577 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
578 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
579 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
580 produce more efficient code on the x86 if the compiler can determine
581 that (+ INDEX <constant>) does not require a bounds check and FOO
582 has an element type at least 8 bits wide.
583 * bug fix: references to undefined variables are handled the same way
584 in toplevel forms as in the normal compiler
585 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
587 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
588 (thanks to Jon Buller)
589 * improvement: faster compilation times for complex functions
590 * improvement: added readlink support to SB-POSIX (thanks to Richard
593 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
594 * improvement: experimental support for mach exception handling on
595 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
597 * improvement: support for GBK external format.
598 (thanks to Chun Tian (binghe))
599 * improvement: the debugger now displays variables that have been closed
600 over, in code compiled with (DEBUG 2) or higher
601 * improvement: support for executable cores on NetBSD (thanks to
603 * new feature: added a RESTART-FRAME debugger command
604 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
605 be used to provide an implementation for FILE-POSITION on Gray streams
606 (thanks to Eric Marsden)
607 * new feature: add syslog, openlog and closelog support to SB-POSIX
608 (thanks to Richard Kreuter)
609 * optimization: the function call overhead in code compiled with
610 a high DEBUG optimization setting is significantly
611 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
612 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
613 (thanks to Tony Martinez)
614 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
615 evaluated once (reported by Kevin Reid)
616 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
617 works again (thanks to Kilian Sprotte)
618 * bug fix: an error is signaled for tagbodies with duplicate tags
619 (thanks to Stephen Wilson)
620 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
621 * bug fix: Win32 port can now handle foreign code unwinding Lisp
622 stack frames from alien callbacks.
623 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
624 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
625 65k pages (thanks to David Woodhouse)
626 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
628 changes in sbcl-1.0.1 relative to sbcl-1.0:
629 * new platform: FreeBSD/x86-64, including support for threading.
630 * new feature: the compiler stores cross-referencing information
631 about function calls (who-calls), macroexpansion (who-macroexpands)
632 and special variables (who-binds, who-sets, who-references) for code
633 compiled with (< SPACE 3). This information is available through the
634 sb-introspect contrib.
635 * new feature: users may subclass SEQUENCE, and have instances of
636 these classes interoperate with standard Common Lisp functions if
637 a number of methods are defined. (This feature is experimental
638 and the interface subject to change based on feedback from SBCL
639 users and the general community)
640 * improvement: sb-sprof traces call stacks to an arbitrary depth on
641 x86/x86-64, rather than the previous fixed depth of 8
642 * improvement: another pthread back-end of mutex "pthread-futex".
643 * bug fix: non-ascii command-line arguments are processed correctly
644 (thanks to Yaroslav Kavenchuk)
645 * bug fix: non-required arguments were not passed correctly when a method
646 defined using DEFMETHOD was called from a mop-generated method using
647 CALL-NEXT-METHOD (reported by Pascal Costanza)
648 * bug fix: recursion is now permitted in accessors through
649 SLOT-UNBOUND. (reported by Pascal Costanza)
650 * bug fix: an error was signaled at startup if the HOME environment
651 variable was defined, but had an empty value (reported by Peter Van Eynde)
652 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
653 signal a PROGRAM-ERROR, not a BUG.
654 * bug fix: SB-POSIX:READDIR works when built with large file support.
655 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
657 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
658 for better automatic indentation support. (thanks to Matt Pillsbury)
659 * optimization: loading generic functions no longer takes O(n^2) time,
660 proportional to the amount of methods in the generic function
661 (reported by Todd Sabin and Jeremy Brown)
662 * optimization: the FIND and POSITION family of sequence functions
663 are significantly faster on arrays whose element types have been
665 * improvements to the Windows port:
666 ** Intermittent heap corruption problems have been fixed. (thanks
667 to Alastair Bridgewater)
668 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
670 ** Lisp is able to unwind foreign exception frames from alien
671 callbacks. (thanks to Alastair Bridgewater)
673 changes in sbcl-1.0 relative to sbcl-0.9.18:
674 * improvement: experimental support for threading on FreeBSD/x86.
675 (thanks to NIIMI Satoshi)
676 * improvement: runtime option --dynamic-space-size can be used
677 to set the size of the dynamic space reserved on startup.
678 * improvement: floating point modes in effect are now saved in
679 core, and restored on startup.
680 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
681 startup, not time since first call to GET-INTERNAL-REAL-TIME.
682 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
683 threads are not running after *SAVE-HOOKS* have run.
684 * improvement: writes to CLOS instance slots are type-checked in code
685 compiled with (SAFETY 3)
686 * improvement: floating-point exception handling on FreeBSD (thanks to
688 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
689 (thanks to Zach Beane)
690 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
692 * improvement: added support for the Shift-JIS external format.
693 (contributed by NIIMI Satoshi)
694 * improvement: callbacks are supported on Linux/PPC. (thanks to
696 * bug fix: compiler bug triggered by a (non-standard) VALUES
697 declaration in a LET* was fixed. (reported by Kaersten Poeck)
698 * bug fix: file compiler no longer confuses validated and already
699 dumped structurres. (reported by Kaersten Poeck)
700 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
701 fill-pointer signals a type-error as required. (thanks to
703 * bug fix: disassemly of funcallable instances works.
704 * bug fix: single stepping on PPC.
705 * bug fix: fix thread-safety problems in the type system (generally
706 manifesting as nonsensical errors like "STRING is a bad type specifier
707 for sequences" or "The value 1 is not of type FIXNUM")
708 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
709 (reported by Josip Gracin)
710 * bug fix: an error is signaled for attempts to displace arrays with
711 incompatible element types (thanks to Mario Mommer)
712 * bug fix: more correct handling of wide characters in debug info
713 (bug reported by Attila Lendvai and fixed by Juho Snellman)
714 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
715 and don't cause extra consing
716 * optimization: MAP and MAP-INTO are significantly faster on vectors
717 whose elements types have been declared.
718 * Improvements to SB-SPROF:
719 ** Support for allocation profiling
720 ** Reduced profiling overhead, especially for long profiling runs
721 * Improvements to the Windows port:
722 ** floating point exceptions are now reported correctly.
723 ** stack exhaustion detection works partially.
724 ** more accurate GET-INTERNAL-REAL-TIME.
725 ** better RUN-PROGRAM behaviour in case of errors in the child
727 ** PROBE-FILE now simplifies pathnames correctly.
728 ** DIRECTORY now works correctly with :WILD-INFERIORS.
729 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
730 1st 1970 (although time timezone data will be unreliable).
731 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
733 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
734 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
735 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
737 * bug fix: two potential GC deadlocks affecting threaded builds.
738 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
739 returns T (reported by Anton Kazennikov)
740 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
741 with non-variable places
742 * bug fix: remove a race condition in the setting of
743 funcallable-instance functions, this should make threaded CLOS
744 code more stable against memory faults.
745 * bug fix: corruption of specials when unbinding is interrupted by an
746 asynchronous unwind (reported by Hannu Koivisto)
747 * improvement: the debugger will now also display local variables that
748 are only used once, for code compiled with a DEBUG optimization quality
751 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
752 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
753 * incompatible change: External-format support for FFI calls. The
754 SB-ALIEN:C-STRING no longer implies an ASCII
755 external-format. Instead the string is subject to external-format
756 conversion. Additionally return values of type SB-ALIEN:C-STRING
757 are by default of type (SIMPLE-ARRAY CHARACTER), not
758 SIMPLE-BASE-STRING. For an alien type that behaves like the old
759 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
760 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
761 * incompatible change: SB-EXT package no longer contains the
762 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
763 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
765 * incompatible change: the single-stepper is no longer available
766 on Alpha, Mips and Sparc platforms.
767 * minor incompatible change: the direct superclasses of
768 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
769 not (STANDARD-OBJECT FUNCTION). This makes the
770 class-precedence-lists of GENERIC-FUNCTION and
771 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
773 * minor incompatible change: the default stream external format on
774 non-unicode SBCL is no longer detected from the locale, but is always
776 * new feature: Add a version of evaluator that uses an interpreter instead
777 of the compiler. EVAL still uses the compiler by default, to switch it
778 to use the interpreter, set the value of the variable
779 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
780 * minor incompatible change: the single-stepper REPL has been merged
781 with the normal debugger (see the "Stepping" heading of the debugger help
782 for more details). The debugger command STEP will no longer switch
783 to the single-stepper REPL.
784 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
785 for a type now works.
786 * bug fix: loading of default sysinit file works. (thanks to Leonid
788 * bug fix: better detection of circularities in the file-compiler.
789 (reported by Marco Monteiro)
790 * bug fix: the CL pathname functions now work with files that have
791 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
792 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
793 systems with Unix98 pty semantics.
794 * bug fix: ASDF-INSTALL will now work with bsd tar.
795 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
797 * bug fix: timers expiring in dead threads no longer cause a
798 type-error (reported by Paul "Nonny Mouse").
799 * bug fix: thanks to more lightweight single-stepper instrumentation,
800 code compiled with (DEBUG 3) will compile and execute significantly faster,
801 and will have more accurate type-inferencing than before
802 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
803 whose bindings are modified
804 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
805 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
806 ** replace dummy implementations of CL:MACHINE-INSTANCE and
807 CL:SOFTWARE-VERSION with proper version
809 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
810 * feature: implemented the READER-METHOD-CLASS and
811 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
812 as specified by AMOP.
813 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
815 * optimization: faster LOGCOUNT implementation on x86 and x86-64
816 (thanks to Lutz Euler)
817 * optimization: hashing of general arrays and vectors has been
818 improved. (reported by Any Fingerhut)
819 * enhancement: SB-INTROSPECT is now able to find definitions of
820 profiled functions. (thanks to Troels Henriksen)
821 * enhancement: compiler-macro expansion applies now to FUNCALL forms
822 as well, allowing compiler-macros for SETF-functions to expand.
823 * enhancement: step-instrumentation no longer wraps known
824 single-value functions with multiple-value context, allowing
825 better type inference.
826 * fixed bug #337: use of MAKE-METHOD in method combination now works
827 even in the presence of user-defined method classes. (reported by
828 Bruno Haible and Pascal Costanza)
829 * fixed bug #339(c): if there are applicable methods not part of any
830 long-form method-combination group, call INVALID-METHOD-ERROR.
831 (reported by Bruno Haible)
832 * fixed bug #361: the :FUNCTION initarg in the protocol for
833 initialization of methods can now be used to override
834 internally-produced optimized functions. (reported by Bruno
836 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
837 system-provided lambda expression no longer cause warnings about
838 unbound #:|pv-table| symbols.
839 * bug fix: improved the handling of type declarations and the
840 detection of violations for keyword arguments with non-constant
842 * bug fix: potentially erronous calls to PATHNAME and
843 MERGE-PATHNAMES were being flushed in some cases.
844 (reported by Richard Kreuter)
845 * bug fix: compiled calls to TYPEP were mishandling obsolete
846 instances. (reported by James Bielman and Attila Lendvai)
847 * bug fix: format strings with ~> without matching ~< no longer
848 trigger an AVER, but signal an understandable error instead.
849 (reported by Antonio Martinez)
850 * bug fix: specifying an output-file without a pathname-type for
851 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
852 of input-file instead of "fasl". (reported by Robert Dodier)
853 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
854 (reported by James Y Knight).
855 * bug fix: compiler-macros-function did not consider the environment
856 argument for shadowing by local functions.
857 * bug fix: compiler-macros expansion was inhibited by local INLINE
859 * bug fix: inline expansions of known functions were subject to
860 step-instrumentation in high debug policies, leading to problems
862 * bug fix: compiler failed to differentiate between different CONS
864 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
865 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
866 * bug fix: #368: incorrect use of expressed vs. upgraded array
868 * bug fix: #306a: more precise unions of array types.
869 * thread-safety improvements:
870 ** CONDITION-WAIT could return early on Linux, if the thread was
871 interrupted and subsequently continued with SIGCONT.
872 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
874 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
875 * added support for the ucs-2 external format. (contributed by Ivan
877 * minor incompatible change: pretty printing of objects of type
878 (cons symbol) is, in the default pprint-dispatch-table, now
879 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
881 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
882 called later in a class's lifetime, possibly as late as when the
883 first instance of the class is created. Previously,
884 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
885 class became finalizeable.
886 * fixed bug: FILE-POSITION sometimes returned inconsistent results
887 for multibyte external-format streams. (thanks to "vbzoli")
888 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
889 with :ALLOCATION :CLASS inherited from superclasses of the
891 * fixed bug: anonymous classes can now be created using the :NAME
892 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
893 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
894 * fixed bug: core-files saved with :EXECUTABLE T can again be
895 executed when SBCL_HOME isn't set. (reported by James Knight)
896 * fixed bug: toplevel LOCALLY forms with declarations could
897 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
898 * fixed bug: printing from several different threads using different
899 values of *print-case* could cause invalid output, due to
900 some internal special variables of the printer not being bound
901 thread-locally (reported by Max Mikhanosha)
902 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
903 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
904 (reported by Pascal Costanza)
905 * fixed bug: FINALIZE-INHERITANCE is called from
906 REINITIALIZE-INSTANCE on classes when the class has previously
907 been finalized, as required by AMOP.
908 * minor code generation optimizations:
909 ** better register allocation in CLOS dispatching functions
910 ** overflow detection when coercing signed bytes to fixnums on x86-64
911 ** is now implemented with one IMUL instruction instead of three shifts
912 ** more efficient bit-vector access on x86 and x86-64
913 ** more efficient access to raw structure slots on x86 and x86-64
914 * fixed some bugs revealed by Paul Dietz' test suite:
915 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
918 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
919 * feature: thread support on Solaris/x86, and experimental thread support
921 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
923 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
924 default method for SLOT-UNBOUND.
925 * minor incompatible change: prevent the user from specializing the
926 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
927 somewhat counter to the intent of the protocol, I (CSR) think, and
928 additionally it just doesn't work in SBCL as currently
929 implemented, thanks to optimizations (that are always valid for
930 the other three SLOT-VALUEish functions, but not for the setter).
931 * minor incompatible change: the :SB-LDB feature is now enabled by
932 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
933 the low-level debugger.
934 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
935 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
936 down to an SB-SYS:FD-STREAM, allowing direct communication in
937 more cases. Temporary files and pipes are still used as a fallback
939 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
940 on the non-reentrant C functions localtime(3) and gmtime(3).
941 * bug fix: global optimization policy was not visible in LOCALLY and
943 * bug fix: class objects can be used as specializers in methods.
944 (reported by Pascal Costanza)
945 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
946 with a type error. (reported by blitz_ on #lisp)
947 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
948 failed with a type error. (reported by Pascal Bourguignon)
949 * bug fix: merging pathnames against defaults with :DIRECTORY
950 starting with '(:RELATIVE :BACK) should preserve the :BACK.
951 (reported by James Y Knight)
952 * bug fix: saving large (>2GB) cores on x86-64 now works
953 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
954 constant index and a (simple-array (signed-byte 32)) array
955 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
956 error (patch by Robert J. Macomber)
957 * feature: TIME now displays the amount of run-time spent in GC
958 * bug fix: The debugger now does a better job of respecting
959 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
960 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
961 workaround for bug 403.)
962 * bug fix: floating point exception handling now works on FreeBSD
963 (thanks to NIIMI Satoshi)
964 * fixed some bugs revealed by Paul Dietz' test suite:
965 ** MISC.641: LET-conversion were not supposed to work in late
967 * improvements to the Win32/x86 port:
968 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
969 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
971 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
972 * new feature: source path information is generated for macro-expansion
973 errors for use in IDE's like Slime (thanks to Helmut Eller)
974 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
975 * bug fix: compiler does not loop forever on an invalid type in
977 * improvement: compilation of most CLOS applications is significantly
979 * optimization: added a limited bytecode compiler for simple toplevel
980 forms, speeding up compilation and FASL loading
981 * bug fix: the statistical profiler now properly distinguishes anonymous
984 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
985 * minor incompatible change: in sbcl-0.9.11 (but not earlier
986 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
987 into subclasses of the finalized class. Now user calls to
988 FINALIZE-INHERITANCE finalize just the one class, and calls by the
989 system return before any subclasses are finalized.
990 * minor incompatible change: The reader no longer ignores errors
991 regarding non-existent packages in #+ and #- feature tests.
992 * new feature: command line options --no-sysinit, --no-userinit to
993 inhibit loading the corresponding init files
994 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
995 for sending data through UDP sockets (thanks to François-René Rideau)
996 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
997 error is signalled instead (thanks to François-René Rideau)
998 * minor incompatible change: Error signalling behaviour of lexical
999 operations violating package locks has changed slightly. Refer to
1000 documentation on package locks for details.
1001 * enhancement: EVAL can process IF-expressions without resorting to the
1003 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1004 constant-folded properly due to missing out-of-line functions.
1005 (reported by Mika Pihlajamäki)
1006 * bug fix: LISTEN sometimes returned T even in cases where no data was
1007 immediately available from the stream
1008 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1009 were reversed. (reported by Levente Mészáros)
1010 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1011 when given a vector displaced to an adjustable array. (reported
1013 * bug fix: derivation of float boundaries from numbers outside the
1014 appropriate float range (reported by John Wiseman)
1015 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1017 * bug fix: precomputing cache entries for generic functions with
1018 some subclasses of specializers as yet invalid does not attempt to
1019 fill a cache line with a negative offset. (reported by Levente
1021 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1022 allow condition class objects as arguments to DOCUMENTATION and
1023 (SETF DOCUMENTATION); only find and set documentation for
1024 structure names for the STRUCTURE doc-type. (suggested by Gary
1026 * improvements to the Win32/x86 port:
1027 ** (user-homedir-pathname) and default initialization file
1028 locations now know about the user's "Documents and Settings"
1029 directory (thanks to Yaroslav Kavenchuk)
1030 ** run-program is implemented (thanks to Mike Thomas)
1031 ** sockets support (thanks to Timothy Ritchey)
1032 ** better backtrace support (thanks to Alastair Bridgewater)
1033 ** sb-grovel supported
1034 ** asdf-install and sb-posix work somewhat
1035 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1036 * improvements to the Solaris/x86 port:
1037 ** works on Solaris 11/Solaris Express
1038 ** floating-point exception handling support
1039 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1040 * fixed some bugs revealed by Paul Dietz' test suite:
1041 ** REMOVE-METHOD returns its generic function argument even when
1042 the method is not one of the generic functions' methods.
1043 ** objects declared as MEMBER types can be admissible arguments to
1044 structure accessors.
1045 ** printing characters should simply be printed by the FORMAT ~:C
1047 ** compiler failure when compiling functions with hairy constant
1048 defaults for optional parameters.
1049 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1050 function, which is already optimized.
1052 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1053 * new platform: experimental support for SBCL x86/Darwin, including
1054 MacOS X 10.4.5 on Intel.
1055 * new feature: Unicode character names are now known to the system
1056 (through CHAR-NAME and NAME-CHAR).
1057 * new feature: the filesystem location of SBCL's core file is
1058 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1059 * minor incompatible change: the contrib modules SB-POSIX and
1060 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1061 this change is to make it easier to distribute
1062 location-independent binaries.
1063 * bug fix: as implied by AMOP, standardized classes no longer have
1064 slots named by external symbols of public packages. (reported by
1066 * optimization: calling functions via constant symbols -- as in
1067 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1068 via the function object as in (FUNCALL #'FOO).
1069 * optimization: on x86 and x86-64, the calling convention for the
1070 case of dealing with an unknown number of values has been altered
1071 to be friendlier to the prediction heuristics implemented,
1072 particularly with reference to CALL and RET pairing. (thanks to
1073 Alastair Bridgewater)
1074 * optimization: on x86, the code for access to thread-local symbol
1075 values and binding/unbinding of thread-local symbols is smaller.
1076 (thanks to Alastair Bridgewater)
1077 * enhancement: CONSTANTP is now able to determine constantness of
1078 more complex forms, including calls to constant-foldable standardized
1079 functions and some special forms beyond QUOTE.
1080 * fixed bug: occasional GC crashes on Solaris/x86
1081 * optimization: x86-64 supports stack allocation of results of simple
1082 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1083 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1084 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1085 (thanks to James Knight)
1086 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1087 by the standard (thanks to Stephen Compall)
1089 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1090 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1091 be used for bundling the runtime and the core file into one
1092 executable binary. This feature is not currently supported on all SBCL
1093 platforms. (thanks to James Bielman and NIIMI Satoshi)
1094 * new feature: a generational or ephemeral garbage collector is now
1095 the default on the PowerPC platform (both Linux and Darwin). The
1096 old Cheney (stop and copy) collector is a build-time option.
1097 (thanks to Cyrus Harmon, after Raymond Toy)
1098 * minor incompatible change: the method by which SBCL finds its
1099 contributed modules has changed; it no longer relies on symbolic
1100 links from an $SBCL_HOME/systems directory, but searches directly
1101 in the subdirectories of $SBCL_HOME.
1102 * enhancement: the dynamic heap size on the Linux/PPC platform is
1103 markedly larger, even using the older Cheney garbage collector.
1104 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1105 certain complicated string types. (reported by Gary King)
1106 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1107 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1108 * fixed bug: DOCUMENTATION on structures no longer signals an
1109 error if no structure type of the right name exists. (reported by
1111 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1112 applicable non-standard primary or :AROUND method on
1113 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1114 no longer cause unbound variable errors. (reported by Kevin Reid)
1115 * fixed bug: metacircle resolution in cases where methods have slots
1116 added before the slots from STANDARD-METHOD. (reported by Jean
1118 * fixed bug: the Power PC assembly code for calling into lisp
1119 sometimes computed its return address wrongly (depending on the
1120 15th bit of the address, fixed at link time). This used to
1121 manifest itself in a segmentation violation while building PCL.
1122 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1123 many others over the years)
1124 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1125 the stack pointer (treated as a signed integer) is negative.
1126 (thanks to Peter van Eynde)
1128 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1129 * new platform: experimental support for the Windows operating
1130 system has been added. (thanks to Alastair Bridgewater)
1131 * fixed several bugs in and robustified the PPC FFI (including
1132 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1133 * bug fix: allow non-simple string symbol names (reported by Paul
1135 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1137 * bug fix: saving a core corrupted callbacks on x86/x86-64
1138 * bug fix: closed a loophole in metacircularity detection and
1139 grounding in the PCL implementation of CLOS.
1140 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1141 (reported by tomppa on #lisp)
1142 * bug fix: clear the direction flag on Lisp -> C transitions, as
1143 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1144 (reported by Andrej Grozin and Hendrik Maryns)
1145 * optimization: major improvements to GC efficiency on GENCGC platforms
1146 * optimization: faster implementation of EQUAL
1147 * optimization: emit more efficient opcodes for some common
1148 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1149 * optimization: several other minor code-generation improvements on x86-64
1150 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1152 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1153 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1154 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1155 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1156 by ANSI as a generic function, and for consistency (SETF
1157 GENERIC-FUNCTION-NAME) is treated likewise.
1158 * fixed bug #233.b: make constraint propagation notice when a variable
1159 value is changed after it is referenced but before it is used
1160 * fixed bug #296: no more arbitrary behaviour from filenames with
1161 odd characters as --load arguments. (reported by Adam Warner)
1162 * fixed bug #390: :CHARACTER-SET pathname components now work as
1163 expected. (reported by Tim Daly Jr)
1164 * fixed bug #391: complicated :TYPE intersections in slot
1165 definitions no longer cause an error in PCL internals.
1166 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1167 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1168 returning the number of octets which would be written to the
1169 file-stream. (thanks to Robert J. Macomber)
1170 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1171 arguments to the internal stream functions. (thanks to David
1173 * bug fix: stack exhaustion is now handled on the x86/SunOS
1174 platform. (thanks to Daisuke Homma)
1175 * bug fix: more accurate ROOM results on GENCGC platforms
1176 * optimization: improved type inference for arithmetic-for
1177 index variables in LOOP
1178 * optimization: faster floating-point SQRT on x86-64
1179 * fixed some bugs revealed by Paul Dietz' test suite:
1180 ** DOCUMENTATION returns NIL instead of "" for method combinations
1181 that don't have a docstring
1183 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1184 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1185 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1186 therefore are not customizeable by user code (as seems to be at
1187 least permitted and maybe required by AMOP). As a consolation,
1188 however, the SBCL implementation of these functions now calls
1189 REINITIALIZE-INSTANCE as specified by AMOP.
1190 * bug fix: slot-definition documentation is propagated as per ANSI
1191 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1192 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1193 argument, as do eslotd initialization methods. (from Pascal
1194 Costanza's "Closer" project)
1195 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1196 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1198 * bug fix: it is now possible to have more than one subclass of
1199 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1200 (reported by Bruno Haible, Pascal Costanza and others)
1201 * bug fix: the dependent update protocol now works for generic
1202 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1203 and Pascal Costanza)
1204 * bug fix: condition-class instances corresponding to
1205 DEFINE-CONDITION forms are now created eagerly. (reported by
1206 Kalle Olavi Niemitalo on comp.lang.lisp)
1207 * bug fix: floating point printing is more accurate in some
1208 circumstances. (thanks to Simon Alexander)
1209 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1210 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1211 * bug fix: callbacks on OS X now preserve stack-alignment.
1212 (thanks to Cyrus Harmon)
1213 * enhancement: the x86-64 disassembler is much better at
1214 disassembling SSE instructions. (thanks to Lutz Euler)
1215 * enhancement: CHECK-TYPE on a variable now allows type-inference
1216 (thanks to Vincent Arkesteijn)
1217 * optimization: improved performance of EUC-JP external format.
1218 (thanks to NIIMI Satoshi)
1219 * optimization: performance improvements to IO on file streams of
1220 :ELEMENT-TYPE CHARACTER
1221 * optimization: much faster memory allocation on x86-64
1222 * optimization: faster garbage collections (latency and throughput)
1224 * optimization: faster bignum subtraction and division on x86 and x86-64
1225 (thanks to Lutz Euler)
1226 * optimization: more accurate type-inference for loops that use a
1227 floating point index variable or a negative step.
1229 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1230 * bug fix: add a workaround to SBCL looping infinitely at startup on
1231 Linux kernels with apparently buggy implementations of personality().
1232 (thanks to Svein Ove Aas)
1233 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1234 (thanks to David Lichteblau)
1235 * bug fix: local bindings shadow global symbol macros for
1236 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1237 * optimization: non-open coded uses of numeric comparison operators
1238 (e.g. >) no longer cons when called with more than one parameter
1239 on platforms supporting dynamic-extent allocation.
1240 * enhancement: saving cores with foreign code loaded is now supported
1241 on MIPS/Linux in addition to the previously supported platforms.
1242 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1243 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1244 * bug fix: division by zero in sb-sprof when no samples were collected
1245 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1246 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1247 (thanks to Alexander Kjeldaas)
1248 * new feature: ignoring the return values of destructive functions
1249 like NREVERSE signals a compile-time style-warning.
1250 (thanks to Kevin Reid)
1251 * new feature: the alignment of alien structure fields can be
1252 explicitly specified. (thanks to Cyrus Harmon)
1253 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1254 and dump core on SIGQUIT
1256 ** incompatible change: threads do not inherit values of specials
1257 from their parents (see manual)
1258 ** bug fix: threads stacks belonging to dead threads are freed by the
1259 next exiting thread, no need to gc to collect thread stacks anymore
1260 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1261 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1262 ** bug fix: dynamic variable and thread start related gc lossage
1263 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1265 * fixed some bugs revealed by Paul Dietz' test suite:
1266 ** SUBTYPEP is slightly more accurate on heinously complicated
1267 CONS types where some of the members have uncertain (in the
1268 NIL, NIL sense) type relationships to each other.
1270 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1271 no longer purified unless :PURIFY T is explicitly specified.
1272 ** Non-purified cores are significantly smaller than before
1274 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1275 * new feature: timers based on Zach Beane's excellent timer package
1276 * added support for the following external formats: koi8-u,
1277 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1278 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1279 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1280 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1281 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1282 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1283 * incompatible change: a threaded SBCL will no longer revert to
1284 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1285 * bug fix: interrupts are disabled until startup is complete; no
1286 more sigsegvs when receiving a signal to soon
1287 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1289 * bug fix: add a workaround for the memory randomization features in
1290 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1291 workaround will only be in effect on systems with the proc filesystem
1293 * bug fix: printing objects of type HASH-TABLE signals a
1294 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1296 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1297 have been running for over 50 days. (reported by Gilbert Baumann)
1298 * bug fix: the logic for getting names of functions gets less
1299 confused when confronded with alternate-metaclass
1300 funcallable-instances. (reported by Cyrus Harmon)
1301 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1302 consistent, even on internal alternate-metaclass objects.
1303 * bug fix: flush closure information collected by physical
1304 environment analysis prepass before the main pass. (bug reported
1306 * bug fix: compiler pack phase does not modify a hashtable, which is
1307 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1308 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1309 may be expanded. (reported by Alexander <malishev> on c.l.l)
1310 * bug fix: no more style-warnings when compiling code using LAST
1311 under high-SPEED low-SPACE settings. (reported by David Wallin
1313 * fixed some incompatibilities between SBCL's MOP and the MOP
1315 ** the METAOBJECT class is now implemented;
1316 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1317 STANDARD-OBJECT, as required;
1318 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1319 now compatible (as required by VALIDATE-SUPERCLASS); there
1320 remains a consistency requirement over the presence or absence
1321 of the FUNCTION class in the superclass list of finalized
1322 classes; see the manual for more details;
1323 ** the :AROUND method for COMPUTE-SLOTS on
1324 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1325 requested slot ordering.
1327 ** bug fix: parent thread now can be gc'ed even with a live
1329 ** bug fix: binding a special with PROGV to no value is not
1330 the same as that symbol not having been bound (thanks to
1332 ** bug fix: binding specials is thread safe (thanks to
1334 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1335 and SB-SPROF do not die with 'no handler for signal XX in
1336 interrupt_handle_now(..)' anymore
1337 ** bug fix: WITH-TIMEOUT works with multiple running threads
1338 * fixed some bugs revealed by Paul Dietz' test suite:
1339 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1340 the :method-class keyword argument.
1342 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1343 * new port: the Solaris operating system on x86 processors is now
1344 mostly supported, though some rough edges in the environment
1345 remain. (thanks to Daisuke Homma)
1346 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1347 space for its heap. (thanks to Thiemo Seufer)
1348 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1349 closures. (thanks to Thiemo Seufer)
1350 * minor incompatible change: eof selects abort in the debugger.
1351 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1352 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1354 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1355 deprecated, and will go away in a future revision of SBCL.
1356 * minor incompatible change: GC-ON and GC-OFF are no longer
1357 implemented with a counter, it does not matter how many times gc
1358 is switched on or off
1359 * bug fix: discriminating functions for generic function classes
1360 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1361 make invalid assumptions about method precedence order. (reported
1363 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1364 platforms. (thanks to Thiemo Seufer)
1365 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1366 * bug fix: correct pathname printing with printer escaping is on.
1367 (thanks to Kevin Reid)
1368 * bug fix: complex VOP definitions in "user-space" no longer trigger
1369 package locks. (reported by Zach Beane)
1370 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1371 for funcallable-instance functions, and is no different from
1373 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1374 characters in the current readtable. (reported by Nicholas Neuss)
1375 * bug fix: SUBTYPEP on various CONS types returns more a more
1376 accurate acknowledgment of its certainty.
1377 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1378 lists in some cases. This partially fixes bug 384.
1379 * flush all standard streams before prompting in the REPL and the
1381 * bug fix: signal handling and triggering gc do not conflict
1382 directly anymore, in particular a high frequency sb-sprof does
1383 not prevent gc from running
1384 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1385 approximation for timezone and DST information between the
1386 universal time epoch and the smallest negative 32-bit time_t.
1387 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1388 year 1899 so long as the encoded time is non-negative.
1389 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1390 the correct answer for non-constant rotate amounts when performing
1391 an inline 32-bit rotation.
1393 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1394 there is only one thread in the session
1395 ** bug fix: memory leak for streams created in one thread and
1396 written to in another
1397 ** bug fix: lockup when compiled with gcc4
1398 ** bug fix: race that allows the gc to be triggered when gc is
1400 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1401 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1403 ** bug fix: finished threads are gc'ed properly
1404 * fixed some bugs revealed by Paul Dietz' test suite:
1405 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1406 has arguments with a different set of applicable methods from
1407 the orignal arguments.
1408 ** The type error thrown by MAP now has a correct expected-type
1410 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1411 name a compiled function.
1412 ** Three MISC tests where a large bignum was improperly coerced to
1413 a float that couldn't represent that bignum during type
1414 derivation were fixed.
1415 ** SUBTYPEP can now handle types involving the negation of a
1416 list-form FUNCTION type.
1417 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1418 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1419 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1421 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1422 * New feature: Experimental support for bivalent streams: streams
1423 opened with :element-type :default now allow character and binary
1424 (unsigned-byte 8) I/O
1425 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1426 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1428 * bug fix: no more highly sporadic "couldn't check whether ~S is
1429 readable" when reading a stream and an interrupt hits in the middle
1430 of a select system call
1431 * compiler better recognizes complex arrays (reported by Eduardo
1433 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1434 for variables on SBCL built with linkage-tables. (reported by Luis
1436 * various error reporting improvements.
1437 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1438 (Thanks to Thiemo Seufer)
1439 * bug fix: nested reader invokations work correctly
1440 * bug fix: it is possible to have simultaneous references to foreign
1441 code and foreign data with the same name.
1443 ** added x86-64 support
1444 ** incompatible change: the threading api now works with thread
1445 objects instead of thread ids
1446 ** bug fix: threads are protected from signals and interruption when
1447 starting up or going down
1448 ** bug fix: a race where an exiting thread could lose its stack to gc
1449 ** bug fix: don't halt on infinite error in threads if possible
1450 ** fixed numerous gc deadlocks introduced in the pthread merge
1451 ** bug fix: fixed thread safety issues in read and print
1452 ** bug fix: debugger doesn't hang on session lock if interrupted at
1453 an inappropriate moment
1454 ** bug fix: run-program is now thread safe(r)
1455 ** bug fix: inner with-recursive-lock no longer releases the mutex
1456 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1457 * fixed some bugs revealed by Paul Dietz' test suite:
1458 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1459 EXPECTED-TYPE slots filled.
1460 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1462 ** MAKE-CONDITION accepts classes as type-designators.
1463 ** COMPILE may never return NIL.
1464 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1465 range before calling Unix time functions
1467 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1468 * numerous signal handling fixes to increase stability
1469 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1470 * minor incompatible change: we now correctly canonize default
1471 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1472 as per the MOP, rather than the historical (INITARG INITFUNCTION
1473 INITFORM). (reported by Bruno Haible)
1474 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1475 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1476 for more information.
1477 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1478 pathname is a directory pathname.
1479 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1480 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1482 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1483 :METACLASS argument in addition to a class name. (reported by
1484 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1485 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1486 (reported by Bruno Haible; patch from Gerd Moellmann)
1487 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1489 * bug fix: more cleanups to the floating point exception handling on
1490 x86-64 (thanks to James Knight)
1491 * bug fix: the compiler does not try to constant fold calls of
1492 COERCE and BIT-* functions when they return freshly constructed
1493 objects. (reported by Nikodemus Siivola and Paul Dietz)
1494 * optimization: improved the MIPS versions of generic (in the
1495 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1496 * optimization: direct conversion of (unsigned-byte 32) to floats on
1497 the PowerPC platform.
1498 * optimization: structure instances with raw slots now use less
1499 memory, and probably show better memory locality. (thanks to
1501 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1502 are treated as requests for stack allocation on the x86-64,
1503 Alpha-32, PPC and SPARC platforms.
1504 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1505 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1506 (thanks to Tony Martinez)
1508 ** gcing a dead thread can no longer lead to lockups
1509 ** threads block signals until they are set up properly
1510 ** errno is no longer shared by threads
1511 ** interrupt-thread restores the eflags register on x86
1512 ** fixed some lockups due to gc/thread interaction
1513 * fixed some bugs revealed by Paul Dietz' test suite:
1514 ** invalid dotted lists no longer raise a read error when
1515 *READ-SUPPRESS* is T
1516 ** signal an error if a symbol that names a declaration is used
1517 as the name of a type, or vice versa
1518 ** allow using the (declare (typespec var*)) abbreviation for
1519 (declare (type typespec var*)) with all type specifiers
1520 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1521 ** always return NIL from PPRINT-POP when OBJECT is NIL
1522 ** don't signal errors when pretty-printing malformed LABELS,
1523 FLET or MACROLET forms
1524 ** declarations in a DOLIST body are also in scope for the
1526 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1528 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1531 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1532 * fixed cross-compiler leakages that prevented building a 32-bit
1533 target with a 64-bit host compiler.
1534 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1535 opened with :IF-EXISTS :OVERWRITE.
1536 * fixed bug 281: error for an invalid qualifier in a short-form method
1537 combination method is not signalled until the faulty method is called.
1538 * bug fix: iteration variable type inferrer failed to deal with open
1539 intervals. (reported by Alan Shields)
1540 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1541 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1542 or more runtime options were provided to the sbcl binary.
1543 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1544 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1545 * optimization: there's now a fast-path for fixnum arguments in the
1546 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1547 * optimization: the code generated on x86-64 is more compact thanks
1548 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1549 * bug fix: floating-point exception handling now partly works on
1550 x86-64. (Thanks to James Knight)
1551 * improvement to the MIPS backend from Thiemo Seufer: C-style
1552 64-bit long long arguments and return values to alien functions
1554 * fixed some bugs revealed by Paul Dietz' test suite:
1555 ** the type-error signalled from WARN has a filled-in DATUM slot.
1556 ** the type-error required when a stream is not associated with
1557 a file has the stream as its datum.
1558 ** type-errors on single-floats on x86-64 no longer have
1559 :INVALID-OBJECT as the datum
1560 ** the type-errors signalled for invalid function names now have
1561 a correct expected type
1562 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1563 for structures defined with a :TYPE. Documentation strings for
1564 typed structures are no longer immediately discarded
1565 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1566 broadcast streams and synonym streams. FILE-LENGTH now also works
1567 on broadcast streams.
1569 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1570 * incompatible change: the --noprogrammer option, deprecated since
1571 version 0.7.5, has been removed. Please use the equivalent
1572 --disable-debugger option instead.
1573 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1575 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1576 inoperational for a while now) has been completely removed.
1577 * null lexical environments are now printed as #<NULL-LEXENV>,
1578 significantly reducing the amount of clutter in typical backtraces.
1579 * documentation on weak pointers, finalization, and after GC hooks
1580 has been added to the manual.
1581 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1582 as other specialized array types, is much faster. SUBSEQ and
1583 COPY-SEQ on such arrays have also been sped up.
1584 * optimization: EQL is now more efficient when at least other argument
1585 is known to be of type (OR FIXNUM (NOT NUMBER)).
1586 * fixed bug: the runtime is now less vulnerable to changes in the
1587 size of the SBCL object on OS X, and virtual memory is reserved for
1588 all spaces that need to be at a fixed address.
1589 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1590 * fixed bug: finalizers and after GC hooks that cause consing are now
1592 * fixed bug: compiler error messages and summaries are now printed to
1593 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1594 * fixed inference of the upper bound of an iteration variable.
1595 (reported by Rajat Datta).
1596 * fixed bug 211e: calling local functions with duplicated constant
1597 keyword argument no longer causes a bogus style warning about an
1599 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1600 ftype declaration to be disregarded. (reported by Dave Roberts)
1601 * fixed bug 373: caused by erronous compilation of references to alien
1602 variables in the runtime on ppc/darwin.
1603 * fixed bug 376: CONJUGATE type deriver.
1604 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1605 (reported by Baughn on #lisp)
1606 * a cross-compiler bug on non-x86 platforms has been identified and
1607 fixed. (thanks to Bruno Haible)
1608 * improvements to the MIPS runtime code for increased stability.
1609 (thanks to Thiemo Seufer)
1610 * increased the maximimum compact environment size to allow
1611 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1612 * partial workaround for bug 135: don't name the function we're
1613 calling for hairy cases of EVAL, so as not to accumulate one environment
1614 entry per call to EVAL. (reported by Kevin Reid)
1615 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1616 * optimization: type testing for non-vector arrays should be faster.
1617 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1619 * bug fix: setting 31st element of a bit vector to zero did not work
1621 * bug fix: redefining a class definition which failed due to a
1622 previous accessor / function clash now works (but see BUGS entry
1623 #380 for more problems in this area). (thanks to Zach Beane)
1624 * the long form of DEFINE-METHOD-COMBINATION disables method group
1625 checking when given a single method group with pattern *. (thanks
1627 * on x86 compiler supports stack allocation of results of simple
1628 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1629 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1630 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1631 * fixed some bugs related to Unicode integration:
1632 ** the restarts for recovering from input and output encoding
1633 errors only appear when there is in fact such an error to
1635 * fixed some bugs revealed by Paul Dietz' test suite:
1636 ** MISC.549 and similar: late transformation of unsafe type
1637 assertions into derived types caused unexpected code
1639 ** SCALE-FLOAT type deriver is less wrong.
1640 ** type derivers for EXP, LOG and similar functions compute result
1641 types for complex arguments better.
1642 ** (MISC.563) CONJUGATE type deriver works for very restricted
1644 ** out-of-line type testers for character strings are available.
1645 ** EQUAL compiler transform understands specialness of objects
1647 ** accessing double-floats stored on the stack now works on x86-64.
1648 ** debugger internals could sometimes create invalid lispobjs,
1649 resulting in GC crashes.
1650 ** MISC.548: type check weakening can convert required type into
1652 ** initialization forms for bindings are not in scope of free special
1655 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1656 * incompatible change: thread support for non-NPTL systems has
1657 been removed - locking is buggy and unreliable. A threaded
1658 SBCL build will now warn at startup and refuse to create
1659 new threads, unless futex support is detected in the kernel
1660 * incompatible change: the top level REPL now has only an ABORT
1661 restart associated with it, not TOPLEVEL and ABORT as it used to.
1662 TOP and TOPLEVEL are now available as debugger commands for
1663 returning to the top level.
1664 * incompatible change: forms evaluated in the REPL now use the
1665 global optimization policy.
1666 * incompatible change: user- and system-initialization files are
1667 no longer processed with LOAD, but by READ and EVAL; hence the
1668 global optimization policy, startup package, readtable, etc,
1670 * The .fasl file format number has been incremented because of
1671 various incompatible changes.
1672 * internal entry point details and argument counts no longer appear
1673 in backtraces unless explicitly requested by setting
1674 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1675 * built-in and standard functions no longer have names like "top
1676 level local call to FOO".
1677 * fixed bug 32: functions defined in non-null lexical environments
1678 now have more legible printed representation
1679 * fixed bug 33: functions defined in non-null lexical environemnts
1680 are now more amenable to inspection by INSPECT.
1681 * workaround for bug 354: XEPs no longer appear in backtraces unless
1682 explicitly requested.
1683 * fixed bug: receiving the signal which results from attempting to
1684 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1685 SIGBUS on other *BSDs) on architectures where the C stack is also
1686 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1687 to debugger confusion or wild instability. (reported by Cheuksan
1689 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1690 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1691 (reported by Lutz Euler)
1692 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1693 compiled code. (reported by Paul Dietz)
1694 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1695 specialized parameter to a method to something that is not TYPEP
1696 the specializer is now possible.
1697 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1698 face of package deletion.
1699 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1700 pathname. (reported by David Tolpin on c.l.l)
1701 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1702 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1703 STRING-STREAM and FILE-STREAM, respectively.
1704 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1705 than previously; in addition, its test suite is now run on build.
1706 (thanks to Luke Gorrie)
1707 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1708 * optimization: added a immediate representation for single-floats
1710 * fixed some bugs revealed by Paul Dietz' test suite:
1711 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1712 ** attempting to create a package with a colliding nickname causes
1713 correctable errors to be signalled.
1714 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1715 ** several x86-64 backend bugs related to sign-extension of immediate
1718 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1719 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1720 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1722 * fixed loading of multiply forward-referenced layouts.
1723 (thanks to Cheuksan Wang)
1724 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1725 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1726 (see COMPILE-FILE documentation for details of :PRINT option)
1727 * fixed bugs 19 and 317: fixed-format floating point printing is
1728 more accurate. This also fixes a bug reported by Adam Warner
1729 related to the ~@F format directive.
1730 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1732 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1733 dispatch table if the from-char is a dispatch macro character.
1734 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1735 by the wordsize no longer ignore the last word. (reported by Lutz
1737 * fixed bug in type checking of dynamic-extent variables. (reported
1739 * optimization: sequence traversal functions use their freedom to
1740 coerce function designators to functions.
1741 * optimization: code with many calls to CLOS methods specialized on
1742 CLOS classes has had redundant type checks removed.
1743 * optimization: added declarations to speed up operations that access
1744 the internal character database (for example STRING-UPCASE)
1745 * optimization: comparison operations between floats and sufficiently small
1746 fixnums no longer create extra rationals
1747 * fixed some bugs related to Unicode integration:
1748 ** portions of multibyte characters at the end of buffers for
1749 character-based file input are correctly transferred to the
1750 start of the buffer at the next read.
1751 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1752 passing it through to OPEN.
1753 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1754 argument given to internal calls to OPEN.
1755 ** the built-in comment readers (introduced by character sequences
1756 ";" and "#|") are more forgiving to encoding errors; they will
1757 STYLE-WARN and then attempt to resync the stream at a character
1758 boundary. (thanks to Teemu Kalvas)
1759 * fixed some bugs in the x86-64 port:
1760 ** Negative short int return values from c-calls are sign-extended
1762 ** The stack is aligned to 16-bytes for c-calls, as required by
1763 the ABI. (thanks to Cheuksan Wang)
1764 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1765 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1766 for enums. (thanks to Vincent Arkesteijn)
1767 ** Multiple small optimizations and bugfixes for floating point
1769 * fixed some bugs revealed by Paul Dietz' test suite:
1770 ** Space, Tab, Linefeed, Return and Page have the invalid
1771 secondary constituent character trait.
1772 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1774 ** WITH-INPUT-FROM-STRING should only update the index place on
1776 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1777 works more reliably.
1778 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1779 with one-dimensional arrays with fill pointers.
1780 ** TYPE-OF failed on a complex with an integer realpart and a
1782 ** compiler failure during type inference for the code of form
1783 (IF (EQL X (THE ...)) ...) (MISC.535).
1785 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1786 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1787 platform. The port supports 61-bit fixnums, large memory spaces
1788 and reloading shared object files.
1789 * enhancement: saving cores with foreign code loaded is now
1790 supported on ppc/Darwin in addition to the previously supported
1792 * enhancement: the statistical profiler now walks deeper into the
1793 call stack for more meaningful call-graphs and accrued time
1794 reports (x86/x86-64 only). It also now reports time spent in
1796 * enhancement: it is now possible to trace most individual methods
1797 of a generic function in addition to tracing the generic function
1799 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1801 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1802 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1803 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1804 produces an error. (thanks to Vincent Arkesteijn)
1805 * bug fix: NAMESTRING on pathnames with :WILD components in their
1806 directories works correctly. (thanks to Artem V. Andreev)
1807 * fixed bug 125: compiler preserves identity of closures. (reported
1809 * bug fixed: functions with &REST arguments sometimes failed with
1810 "Undefined function" when compiled with (DEBUG 3). (reported by
1812 * bug fix: overflow during compiling of setting element of a bit
1813 vector with constant index and value. (reported by Timmy Douglas)
1814 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1815 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1816 * on x86 compiler partially supports stack allocation of dynamic-extent
1818 * GO and RETURN-FROM do not check the extent of their exit points
1819 when compiled with SAFETY 0.
1820 * fixed some bugs related to Unicode integration:
1821 ** encoding and decoding errors are now much more robustly
1822 handled; it should now be possible to recover even from invalid
1823 input or output to the terminal. (thanks to Teemu Kalvas)
1824 ** provided a first cut at implementing STRING-TO-OCTETS and
1825 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1826 ** altered the SB-MD5 contributed module slightly, changing the
1827 interface just enough for it to be supportable for builds where
1828 lisp characters are not eight bits.
1829 * fixed some bugs revealed by Paul Dietz' test suite:
1830 ** the FORMATTER-generated functions for ~V[ conditionals require
1831 the correct number of arguments.
1832 ** READ-FROM-STRING returns the mandated second value when applied
1833 to displaced strings.
1834 ** the #\Rubout and #\Backspace characters are treated as invalid
1835 constituent characters by the tokenizer.
1837 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1838 * new feature: reloading changed shared object files with
1839 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1840 * new feature: references to foreign variables and functions
1841 can now be compiled and loaded before the corresponding shared
1842 object file is loaded, as long as the foreign definitions are
1843 available at runtime.
1844 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1845 supported. (thanks to Dan Debertin)
1846 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1847 just keywords. (thanks to Vincent Arkesteijn)
1848 * fixed bug #331: structure-class instances corresponding to
1849 DEFSTRUCT forms are now created eagerly.
1850 * fixed bug #345: backtraces from calls to undefined functions work
1851 on x86 as well. Related bug #61 is now also partially fixed on x86
1852 (backtraces from throws to unknown catch tags.)
1853 * bug fix: lambda-list parsing is now stricter vrt. order and number
1854 of lambda-list keywords.
1855 * bug fix: as specified by AMOP, an error is signalled if a
1856 class-option appears multiple times in a DEFCLASS form. (reported
1858 * bug fix: RANDOM can be compiled when the compiler derives the type
1859 of its numeric argument as a disjoint set of small integers.
1860 (reported by Paul Dietz)
1861 * bug fix: starting a core saved with shared objects loaded when
1862 those objects are not available no longer causes threaded SBCL to
1863 hang. (reported by Sean Ross)
1864 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1866 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1867 argument, which must always be NIL. (reported by Kalle Niemitalo)
1868 * bug fix: printing 1.0d+23 no longer results in an error.
1869 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1870 * bug fix: structure slot setters preserve evaluation order. (thanks
1872 * fixed some bugs related to Unicode integration:
1873 ** RUN-PROGRAM can allow its child to take input from a Lisp
1874 stream. (reported by Stefan Scholl)
1875 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1876 locales. (reported by Ken Causey)
1877 * fixed some bugs revealed by Paul Dietz' test suite:
1878 ** INCF, DECF and REMF evaluate their place form as specified in
1880 ** FORMATTER expands ~{ ~} iteration directives with V or #
1881 parameters correctly.
1882 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1883 consequent uses no arguments correctly.
1884 ** the system has a partial understanding of the (COMPLEX RATIO)
1886 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1889 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1890 * new feature: a build-time option (controlled by the :SB-UNICODE
1891 keyword feature, enabled by default) for building the system with
1892 support for the entire 21-bit character space defined by the
1894 * new feature: the system now has rudimentary external-format
1895 support; the primary user-visible change at this time is that
1896 characters with the high bit set (such as lower-case-e-acute) will
1897 print correctly to a terminal in a UTF-8 environment.
1898 * minor incompatible change: BASE-CHAR no longer names a class;
1899 however, CHARACTER continues to do so, as required by ANSI.
1900 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1901 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1902 has been moved to the SB-EXT package (temporarily re-exported from
1904 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1905 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1907 * fixed bug #351: better error-handlind and reporting for malformed
1909 * fixed bug #350: bignum-printing is now more memory-efficient,
1910 allowing printing of very large bignums, eg. (expt 2 10000000).
1911 (reported by Bruno Haible)
1912 * fixed bug #302: better primitive-type selection for intersection
1914 * fixed bug #308: non-graphic characters now all have names, as
1915 required. (reported by Bruno Haible)
1916 * bug fix: redefining a class with different superclasses now correctly
1917 removes it from the direct-subclasses of its previous superclasses.
1918 (reported by David Morse)
1919 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1920 new value now works. (reported by Bruno Haible)
1921 * bug fix: correct canonicalization of multiple non-standard slot
1922 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1923 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1924 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1925 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1926 now exists, an signals an error.
1927 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1928 during macroexpansion for non-iteration variables as well. (reported
1929 by Bruno Haible for CMUCL)
1930 * bug fix: Cyclic structures and unprintable objects in compiler
1931 messages no longer cause errors. (reported by Bruno Haible)
1932 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1933 and READ-FROM-STRING all now return a primary value of NIL if
1934 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1935 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1936 (reported by Bruno Haible for CMUCL)
1937 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1938 do not designate a condition. (reported by Bruno Haible for
1940 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1941 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1942 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1943 permitting resolution in favour of any of the conflicting symbols.
1944 (reported by Bruno Haible for CMUCL)
1945 * bug fix: EQUAL compiler optimizations is less aggressive on
1946 strings which can potentially compare true despite having distinct
1947 specialized array element types.
1948 * bug fix: unit enumerations can be defined without dividing by
1949 zero. (thanks to Vincent Arkesteijn)
1950 * FORMAT compile-time argument count checking has been enhanced.
1951 (report from Bruno Haible for CMUCL)
1952 * a partial workaround for the bug 262: the compiler does not try to
1953 inline-expand a local function doing RETURN-FROM from a deleted
1954 BLOCK. (thanks to Peter Denno for the bug report and to David
1955 Wragg for the simple test case)
1956 * fixed some bugs revealed by Paul Dietz' test suite:
1957 ** RENAME-PACKAGE allows all package designators as new package
1959 ** constraint propagation and lambda variable substitution are
1960 more cautious in dealing with partially deleted code.
1961 ** compiler sometimes lost reoptimization passes.
1962 ** CERROR, given a condition as condition designator, passes its
1963 remaining arguments to the continue format control without
1965 ** Case-altering FORMAT directives work correctly on non-ASCII
1967 ** The REAL type specifier handles bounds outside the floating
1968 point ranges without signalling FLOATING-POINT-OVERFLOW.
1969 ** Functions with IR1-transformations can create intercomponent
1970 references to global functions.
1971 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1973 ** FORMAT ~R treats a nil value for its first parameter correctly.
1975 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1976 * enhancement: saving cores with foreign code loaded is now
1977 supported on x86/NetBSD and sparc/Linux in addition to the previously
1978 supported platforms.
1979 * bug fix: on some platforms repeated installations caused multiple
1980 copies of HTML documentation to be installed -- should not happen
1981 any more. (reported by Stefan Scholl)
1982 * bug fix: parsing self-recursive alien record types multiple times
1983 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1984 original patch by Helmut Eller for CMUCL)
1985 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1986 (thanks to Richard Kreuter)
1987 * bug fix: defining classes whose accessors are methods on existing
1988 generic functions in other (locked) packages no longer signals
1989 bogus package lock violations. (reported by François-René Rideau)
1990 * bug fix: special variables as DEFMETHOD parameters no longer have
1991 associated bogus type declarations. (reported by David Wragg and
1993 * bug fix: read-write consistency on streams of element-type
1994 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1995 * bug fix: redefiniton of the only method of a generic function with
1996 no DEFGENERIC no longer emits a full WARNING. In addition,
1997 redefinition of generic functions with no DEFGENERIC to an
1998 incompatible lambda list now signals an error. (thanks to Zach
2000 * bug fix: DEFGENERIC now works even when there's a function of the
2001 same name in an enclosing lexical environment. (thanks to Zach
2003 * fixed compiler failure, caused by instrumenting code during
2004 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2005 * optimization: added loop analysis and improved register allocation
2006 * fixed some bugs revealed by Paul Dietz' test suite:
2007 ** POSITION on displaced vectors with non-zero displacement
2008 returns the right answer.
2009 ** (SIMPLE-STRING) is a valid type specifier for sequence
2011 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2013 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2014 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2016 ** The justification version of the FORMAT ~< directive treats
2017 non-zero minpad parameter correctly.
2019 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2020 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2021 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2022 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2023 the supported interface.
2024 * new feature: Single-stepping of code compiled with DEBUG 2 or
2025 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2026 * new feature: saving cores with foreign code loaded is now
2027 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2028 Timothy Moore's work for CMUCL)
2029 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2030 parameters to * instead of NIL if no initform is supplied.
2031 (reported by Johan Bockgaard)
2032 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2033 correctly when FUNCALL appears as the car of the form. Note:
2034 despite this FUNCALL forms are not currently subject to
2035 compiler-macro expansion. (port of Raymond Toy's fix for the
2036 same from CMUCL, reported by Johan Bockgaard)
2037 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2038 (thanks for Teemu Kalvas)
2039 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2040 case instead of terminating the iteration (thanks for Julian
2041 Squires, Sean Champ and Raymond Toy)
2042 * bug fix: incorrect expansion of defgeneric that caused a style
2043 warning. (thanks for Zach Beane)
2044 * bug fix: slot accessor effective method computation works properly
2045 for classes with multiple non-standard applicable methods on
2046 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2047 * on x86 compiler supports stack allocation of results of LIST and
2048 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2049 CMUCL implementation by Gerd Moellmann)
2050 * fixed some bugs revealed by Paul Dietz' test suite:
2051 ** FORMAT strings with both the ~<~:;~> form of the justification
2052 directive and pretty-printing directives cause an error.
2054 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2055 * incompatible change: the internal functions
2056 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2057 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2058 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2059 instead of the old functions.
2060 * new feature: on platforms where "dladdr" is available foreign
2061 function names now appear in backtraces. (based on Helmut Eller's
2063 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2064 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2066 * documentation: ASDF manual is now distributed with SBCL.
2067 * bug fix: SBCL can now load its contributed modules with REQUIRE
2068 even if the system-provided entries have been removed from
2069 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2071 * bug fix: backtraces involving undefined functions or assembly
2072 routines are more informative. (thanks to Brian Downing)
2073 * bug fix: mutually referent alien structures now work correctly.
2074 (reported by Rick Taube)
2075 * bug fix: structures defined by WITH-ALIEN can be referred to
2076 within other definitions in the same WITH-ALIEN.
2077 * bug fix: division operators (MOD, TRUNCATE and the like) with
2078 constant zero divisors and integer dividends no longer generate
2080 * bug fix: provide default methods for INPUT-STREAM-P and
2081 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2082 * bug fix: improve the detection and resolution of MOP metacycles
2083 (where effective method computation depends on the generic function
2084 having its effective method computed). (reported by Bruno Haible)
2085 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2086 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2087 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2088 * bug fix: pathnames with relative directory components can be
2089 represented relative to default pathnames.
2090 * optimization: in taking the GCD of bignums, reduce the two bignums
2091 to approximately the same size (using Euclid's algorithm) before
2092 applying the more sophisticated binary GCD. (thanks to Juho
2094 * optimization: COUNT on bitvectors now operates word-at-a-time.
2095 * optimization: ASH with a positive, but not necessarily constant,
2096 (leftwards) shift, when in a modular context, is compiled to a
2098 * fixed some bugs revealed by Paul Dietz' test suite:
2099 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2100 if the corresponding argument is NIL.
2101 ** FORMAT directives accepting a minpad parameter treat negative
2103 ** literal commas as character parameters to FORMAT directives are
2105 ** literal spaces directly after ~<Newline> directives within a
2106 format-logical-block (~:< ~@:>) do not induce :FILL-style
2107 conditional newlines.
2108 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2109 as specified: it no longer includes conditional newlines).
2110 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2112 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2113 :PER-LINE-PREFIX argument does not evaluate to a string.
2115 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2116 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2117 the manual for details; for now, package locks can be disabled by
2118 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2119 if no major problems are found then it is likely that they will be
2120 compiled in unconditionally.
2121 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2122 unsupported operators on all platforms. To load a shared library
2123 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2124 object file, link it into a shared library outside of SBCL and
2125 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2127 * bug workaround: ROOM T and the GC were not working together
2128 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2129 reporting facility aren't preserved. That reporting has been
2130 disabled, so now until and unless someone figures out how to make it
2131 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2132 * minor incompatible change: as threatened around sbcl-0.8.0, the
2133 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2134 The symbols are also exported from SB-PCL for backwards
2135 compatibility, but more so than before SB-PCL should be treated as
2136 an implementation-internal package.
2137 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2139 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2140 It is known as of this release not to work on the Alpha, however.
2141 * fixed bug #167: errors signalled due to illegal syntax in method
2142 bodies are now more legible.
2143 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2144 designators and can hence be used with TYPEP.
2145 * fixed bug #333: CHECK-TYPE now ensures that the type error
2146 signalled, if any, has the right object to be accessed by
2147 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2148 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2149 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2151 * fixed bug #334: programmatic addition of slots using specialized
2152 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2153 and :ALLOCATION :CLASS slots.
2154 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2155 float exponents. (rereported by Peter Seibel)
2156 * fixed a bug: #\Space (and other whitespace characters) are no
2157 longer considered to be macro characters in standard syntax by
2158 GET-MACRO-CHARACTER.
2159 * fixed bug: initialization of condition class metaobjects no longer
2160 causes an instance of the condition to be created. (reported by
2162 * fixed bug: it is now possible to have slots such that
2163 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2164 description is neither :INSTANCE nor :CLASS.
2165 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2166 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2167 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2168 non-standard SLOT-DEFINITION-ALLOCATION values.
2169 * fixed bugs: various race conditions handling exiting threads.
2170 CL-PPCRE's thread torture test now passes.
2171 * fixed arguably-a-bug: GC time proportional to number of threads in
2172 system even when most of them are idle
2173 * optimization: improved performance of BIT and SBIT on bit-vectors.
2174 * .fasl file incompatibility: The fasl file version number has
2175 been incremented because of changes associated with package locks.
2177 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2178 * minor incompatible change: the system no longer provides
2179 optimization hints (conditions which are TYPEP
2180 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2181 mode; these hints are still emitted when higher SPEED optimization
2183 * new contrib module: a sampling profiler (profiling by statistical
2184 sampling, rather than by instrumenting functions) is available as
2185 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2186 * the behaviour of the standard function ED is now customizeable by
2187 third parties through a hook variable: see ED's documentation
2188 string for information on the protocol.
2189 * the compiler no longer emits efficiency notes for (FUNCALL X)
2190 when the type of X is uncertain under default optimization
2192 * fixed bug 276: mutating a binding of a specialized parameter to a
2193 method to something that is not TYPEP the specializer is now
2195 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2196 exhibit the required behaviour on the x86 platform. (thanks to
2197 Peter van Eynde, Eric Marsden and Bruno Haible)
2198 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2199 even for difficult arguments. (reported by Peter Graves)
2200 * fixed bug 141a: the backquote printer now descends quoted
2202 * fixed another bug in backquote printing: no more destructive
2203 modification of the form's list structure. (reported by Brian
2205 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2206 move between its address being taken and the call to
2207 interrupt_thread, fixing a crashing race condition.
2208 * the SB-POSIX contrib implementation has been adjusted so that it
2209 no longer exhibits ridiculously poor performance when constructing
2210 instances corresponding to C structs.
2212 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2213 * minor incompatible change: the sb-grovel contrib now treats C
2214 structures as alien (in the sense of SB-ALIEN) objects rather than
2215 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2216 has implications for memory management of client code
2217 (sb-grovel-returned objects must now be manually managed) and for
2218 type safety (alien objects now have full types).
2219 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2220 used to control emission of compiler diagnostics, rather than the
2221 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2222 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2223 quality should be considered deprecated.
2224 * install.sh now installs the user manual as well
2225 * (not quite a new documentable feature, but worth considering in
2226 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2227 beginnings of a semantically meaningful condition hierarchy is
2228 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2230 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2231 designator as the defaults argument.
2232 * fixed bug: Displaced arrays whose displaced-to array has become
2233 too small now cause ARRAY-DIMENSION to signal an error, providing
2234 for safer bounds-checking. (reported by Bruno Haible)
2235 * fixed bug: DEFCLASS slot definitions with identical :READER and
2236 :WRITER names now signal a reasonable error. (reported by Thomas
2238 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2240 * fixed bug: Invalid slot specification errors now print correctly.
2241 (thanks to Zach Beane)
2242 * fixed bug 320: Shared to local slot value transfers in class
2243 redefinitions now happen corrently from superclasses as
2244 well. (reported by Bruno Haible)
2245 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2247 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2248 improper lists correctly. (reported by Bruno Haible)
2249 * fixed bug 313: source-transform for <fun-name> was erroneously
2250 applied to a call of a value of a variable with name <fun-name>.
2251 (reported by Antonio Menezes Leitao)
2252 * fixed bug 307: The obsolete instance protocol ensures that
2253 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2254 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2255 remove dead unknown-values globs from the middle of the stack.
2256 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2257 easier to resume long computations after using *BREAK-ON-SIGNALS*
2258 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2259 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2260 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2261 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2262 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2263 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2265 * fixed a (fairly theoretical) bug in string printing: if
2266 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2267 does not have array-element-type equal to the most general string
2269 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2270 function name. (thanks to Nikodemus Siivola)
2271 * fixed bug: compile-time format string checker failed on
2272 non-closed ~{. (reported by Thomas F Burdick)
2273 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2274 don't warn on legal loop code involving more than one aggregate
2275 boolean. (thanks to Nikodemus Siivola)
2276 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2277 in keyword position to MAKE-PACKAGE was not being reported as
2279 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2280 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2282 * fixed bugs 280 and 312: the checking for multiple definitions in a
2283 file is less likely to become confused by uses of inline
2285 * fixed bug: the #S reader macro performs the keyword coercion
2286 specified for slot names. (reported by Kalle Niemitalo)
2287 * fixed bug: lambda lists may contain symbols whose names start with
2288 & but are not lambda-list-keywords; their occurrence triggers a
2290 * fixed bug 321: define-method-combination argument lambda lists do
2291 not cause invalid code to be generated when &optional or &aux
2292 variables have default values. (reported by Bruno Haible)
2293 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2294 have CLOS classes; this appears also to have fixed reported
2295 instability in stack exhaustion detection.
2296 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2297 MUFFLE-WARNING when no associated restart is present is now
2299 * optimization: rearranged the expansion of various defining macros
2300 so that each expands into only one top-level form in a
2301 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2303 * optimization: used a previously little-used slot in symbols to
2304 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2306 * fixed some bugs revealed by Paul Dietz' test suite:
2307 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2309 ** Fixed an optimization bug related to inheritance of initforms
2310 from local to shared slots.
2311 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2312 ** CAST optimizer forgot to flush argument derived type.
2313 ** print/read consistency on floats is now orders of magnitude
2314 more likely. (thanks also to Bruno Haible for a similar report
2316 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2317 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2318 for objects of type REAL. Make it so.
2319 ** SXHASH is specified (infelicitously) to respect similarity,
2320 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2321 it so. (thanks to Markus Ziegler)
2322 ** on the Alpha, the compiler succeeds in compiling functions
2323 returning a known number of arguments greater than 63.
2324 ** fixed handling of invalid NIL arguments in keyword position
2326 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2328 ** provided a readably-printable representation for RANDOM-STATE
2330 ** ensured that pathnames, where they have a namestring, always
2331 print using #P"..." syntax.
2333 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2334 * Support for the forthcoming 2.0 version of the NetBSD kernel
2335 running on x86 hardware has been added. (thanks to Perry
2336 E. Metzger most immediately, and others for their past work)
2337 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2338 current release version; SBCL's OpenBSD support had been broken
2339 since about the time of OpenBSD's switch to ELF binary format.)
2340 * [placeholder for DX summary]
2341 ** user code with &REST lists declared dynamic-extent, under high
2342 speed or space and low safety and debug optimization policy.
2343 * The manual has been converted to Texinfo format and the debugger
2344 chapter from the cmucl manual has been added.
2345 * A facility has been added to extract documentation strings from
2346 sbcl and store them as Texinfo-formatted snippets for inclusion in
2347 the manual (via Texinfo's @include directive)
2348 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2349 the test case to Dave Roberts)
2350 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2351 pointers. (reported by Sean Ross)
2352 * bug fix: PROFILE output is printed nicely even for large numerical
2353 values. (thanks to Zach Beane)
2354 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2355 greater than 32 handle EOF correctly.
2356 * bug fix: on X86 an immediate argument of the IMUL instruction is
2357 correctly printed in disassembly. (thanks to Lutz Euler)
2358 * bug fix: class slots in redefined classes preserve their old
2359 values. (thanks to Bruno Haible and Nikodemus Siivola)
2360 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2361 succeeds. (reported by Marco Baringer)
2362 * fixed some bugs revealed by Paul Dietz' test suite:
2363 ** READ-SEQUENCE now works on ECHO-STREAMs.
2364 ** RATIONALIZE works more according to its specification. (thanks
2367 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2368 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2369 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2370 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2371 should matter to you only if you rebind the printer control
2372 variables and then find you want different bindings in the
2373 debugger than in the ordinary execution of your program.)
2374 * The runtime build system has been tweaked to support building
2375 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2376 assembler and linker. (thanks to Nikodemus Siivola)
2377 * Unbound, undefined, undeclared variables now trigger full
2378 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2379 more often programmer error than deliberate exploitation of undefined
2381 * optimization: the hash algorithm for strings has changed to one
2382 that is less vulnerable to spurious collisions. (thanks to Juho
2384 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2385 needless bounds checking. (thanks to Juho Snellman)
2386 * optimization: implemented multiplication as a modular
2387 (UNSIGNED-BYTE 32) operation on the PPC backend.
2388 * fixed some bugs revealed by Paul Dietz' test suite:
2389 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2391 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2392 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2393 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2395 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2397 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2399 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2400 their output stream on EOF from read.
2401 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2402 have been read to end-of-file.
2403 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2405 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2406 description of determination of which consecutive characters
2408 ** Printing the "Space" character with escaping on now yields "#\\ ",
2409 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2410 ** Reading floating-point numbers with *READ-BASE* set to a number
2411 less than 10 works correctly.
2412 ** Reading floating-point numbers with *READ-BASE* set to a number
2413 more than 10 works correctly.
2414 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2415 the readtable currently in effect.
2417 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2418 * minor incompatible change: parsing of namestrings on a physical
2419 (Unix) host has changed; numbers after the final #\. in a
2420 namestring are no longer interpreted as a version field. This is
2421 intented to be largely invisible to the user, except that the
2422 meaning of the namestring "*.*.*" has changed: it now refers to a
2423 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2424 should usually be replaced by
2425 (make-pathname :name :wild :type :wild :version :wild)
2426 with the added benefit that this is more likely to be portable.
2427 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2428 option to OPEN now signals an error if the file being opened
2429 exists; this may have an impact on existing code.
2430 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2431 signals received, on the PowerPC platforms (both Linux and
2432 Darwin). (thanks to Pierre Mai for pointing out the location of
2434 * several fixes on OS X: The system now builds and runs cleanly on
2435 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2436 (thanks to Brian Mastenbrook)
2437 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2438 second-resolution: integer multiples of 1/3600 between -24 and 24.
2439 (thanks to Vincent Arkesteijn)
2440 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2441 type when called with 1 argument; PEEK-CHAR checked type of
2442 PEEK-TYPE only after having read first character from a
2443 stream. (reported by Peter Graves)
2444 * bug fix: the garbage collector now has much better locality
2445 behaviour, and in particular no longer treats all memory as being
2446 exhausted when many small objects point to each other in a deeply
2448 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2449 recognized as being TYPEP their class.
2450 * bug fix: the PUSHNEW documentation string has been corrected.
2451 (thanks to Vincent Arkesteijn)
2452 * bug fix: defaulting of the value for the last of an atypically
2453 large number of multiple values being bound was not being
2454 performed correctly on the Alpha or PPC platforms
2455 * optimization: implemented multiplication as a modular
2456 (UNSIGNED-BYTE 32) operation on the x86 backend.
2457 * optimization: SEARCH on simple-base-strings can now be open-coded.
2458 (see also contrib/compiler-extras.lisp for inspiration for
2459 teaching the compiler about the Boyer-Moore algorithm).
2460 * value, returned by MAX (and MIN) called with several EQUALP, but
2461 not EQL, arguments now does not depend on compiler settings.
2462 * fixed some bugs revealed by Paul Dietz' test suite:
2463 ** in stack analysis liveness information is propagated from
2464 non-local entry points.
2465 ** pathwise CAST removing failed when the CAST node did not start
2467 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2468 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2470 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2471 host is already defined.
2472 ** RENAME-FILE works on streams instead of signalling an internal
2474 ** PEEK-CHAR uses the current readtable when determining whether
2475 or not a character is whitespace.
2476 ** MERGE-PATHNAMES handles the case when the pathname does not
2477 specify a name while the default-pathname specifies a version.
2478 ** Pathnames now stand a better chance of respecting print/read
2480 ** Attempting to use standardized file system operators with a
2481 pathname with invalid :DIRECTORY components signals a
2483 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2485 ** DIRECTORY on logical pathnames is more correct.
2486 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2487 signal a TYPE-ERROR if their argument is not a stream.
2488 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2489 designator argument does not designate a stream.
2490 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2491 examining the synonym.
2492 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2494 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2495 element-type larger than ([UN]SIGNED-BYTE 32).
2497 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2498 * When built with the :SB-FUTEX feature, threaded builds now take
2499 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2500 for faster/more reliable mutex and condition variable support.
2501 * Incompatible change (but one you probably shouldn't have been using
2502 anyway): the interface and code for arbitrating between multiple
2503 threads in the same user session has been redesigned.
2504 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2505 error when called without an explicit environment argument.
2506 (thanks to Nikodemus Siivola)
2507 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2508 confused about their position. (thanks to Adam Warner and Gerd
2510 * bug fix: Pretty printing backquoted forms with unquotations in the
2511 argument list position of various code constructs such as LAMBDA
2512 now works correctly. (reported by Paul Dietz)
2513 * bug fix: Pretty printing unquotations no longer loses all
2514 stream position information.
2515 * optimization: performance of string output streams is now less
2516 poor for multiple small sequence writes.
2517 * optimization: performance of CSUBTYPEP in the presence of complex
2518 expressions involving CONS and NOT many times has been improved.
2519 (reported by Paul Dietz)
2520 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2522 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2523 streams for the REPL, for the debugger, and so on. (thanks to
2525 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2526 * fixed some bugs revealed by Paul Dietz' test suite:
2527 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2528 is ignored if it is too small, rather than propagating through
2529 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2530 ** extremely complex negations of CONS types were not being
2531 sufficiently canonicalized, leading to inconsistencies in
2533 ** VALUES tranformer lost derived type.
2535 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2536 * fixed a bootstrapping bug: the build process no longer assumes
2537 that the various BOOLE-related constants have the same value in
2538 host and target lisps. (noted by Paul Dietz' test suite on an
2539 SBCL binary built from CLISP)
2540 * The system can now be dynamically linked on the MIPS platform,
2541 which enables dynamic loading of foreign code from Lisp. (thanks
2542 to Ralf Baechle for discussions on the MIPS ABI)
2543 * The system now records debugging information for its own source
2544 files in a filesystem-position-independent manner, relative to
2545 the "SYS" logical host.
2546 * fixed a compiler bug: MV-LET convertion did not check references
2547 to the "max args" entry point. (reported by Brian Downing)
2548 * tweaked disassembly notes to be less confident about proclaiming
2549 some instruction as an LRA. (thanks to Brian Downing)
2550 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2551 now each have their own history, command character, and other
2552 characteristics. (thanks to David Lichteblau)
2553 * fixed some bugs revealed by Paul Dietz' test suite:
2554 ** compiler failure in compiling LOGAND expressions including a
2556 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2557 shift greater than 32.
2558 ** FLUSH-DEST did not mark blocks for type check regeneration.
2559 ** HANDLER-CASE failed to accept declarations in handler clauses
2560 in some circumstances.
2562 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2563 * New code in contrib/sb-introspect (still probably not entirely
2564 stable yet) provides some support for smart Lisp development
2565 environments like SLIME.
2566 * The conditions signalled for errors occurring when loading .fasl
2567 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2568 in a way which should help ASDF recover gracefully.
2569 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2570 stuff has been cleaned up. If you code contrib/ stuff, this might
2571 affect you, and you can look at contrib/README, contrib/STANDARDS,
2572 and/or the 0.8.4.27 diff to check.
2573 * In full calls the compiler now does not generate checks for declared
2574 argument types for all arguments.
2575 * various threading fixes
2576 ** and some experimental patches which didn't make it into
2577 the main tree for this release, but which are shipped in
2578 contrib/experimental-thread.patch as a possible fix for some
2579 failures (deadlock, spinning...) in GC-intensive multithreaded
2581 * fixed PPC build problem (source code incompatibility of different
2582 library versions): added offsetof() hackery which attempts to divine
2583 where glibc maintainers put uc_mcontext today
2584 * fixed bug 282: compiler does not trust type assertions while passing
2585 arguments to a full call.
2586 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2587 &OPTIONAL VALUES type parameter.
2588 * fix bug 214: algorithm for noting rejected templates is now more
2589 similar to that of template seletion. (also reported by rydis on
2591 * fixed bug 141b: printing backquoted information readably and prettily
2592 inserts a space where necessary.
2593 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2594 (CHARACTER 10) are now reported as errors, rather than propagated
2595 as unknown types. (reported by piso on #lisp)
2596 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2597 with values NIL and :ERROR. (thanks to Milan Zamazal)
2598 * fixed bug 191c: CLOS now does proper keyword argument checking as
2599 described in CLHS 7.6.5 and 7.6.5.1.
2600 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2601 longer raise an error; further, using a list as a for-as-arithmetic
2602 counter now raises a meaningful error.
2603 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2604 now understood by sequence creation functions such as MAKE-SEQUENCE
2606 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2607 a STRING-INPUT-STREAM.
2608 * compiler enhancement: SIGNUM is now better able to derive the type
2610 * type declarations inside WITH-SLOTS are checked. (reported by
2612 * fixed some bugs revealed by Paul Dietz' test suite:
2613 ** incorrect optimization of TRUNCATE for a positive first
2614 argument and negative second.
2615 ** compiler failure in let-convertion during flushing dead code.
2616 ** compiler failure while deriving type of TRUNCATE on an
2617 interval, containing 0.
2618 ** ASH of a negative bignum by a negative bignum count now returns
2620 ** intersection of CONS types now canonicalizes properly, fixing
2621 inconsistencies in SUBTYPEP.
2623 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2624 * incompatible change: The --disable-debugger command line
2625 option now clobbers the debugger at a more fundamental
2626 level, by redefining #'INVOKE-DEBUGGER instead of by
2627 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2628 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2629 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2630 enter the debugger REPL and then suffer recursive errors
2631 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2632 while under the new system, BREAK in --disable-debugger mode
2633 terminates the system just as an unhandled error would.
2634 * fixed compiler performance when processing loops with a step >1;
2635 * bug fix: DOCUMENTATION now retrieves generic function
2636 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2637 support has been systematized, and now supports the methods
2638 specified by ANSI, along with a default method and a method for
2639 slot documentation. (reported by Nathan Froyd)
2640 * bug fix: effective methods associated with a generic function are
2641 no longer cached over a change of that generic function's method
2642 combination. (reported by Andreas Fuchs)
2643 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2644 names a non-existent directory. (thanks to Andreas Fuchs)
2645 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2646 the PPC platform, lead to stack corruption; this has been fixed.
2647 (reported by Rainer Joswig)
2648 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2649 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2650 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2651 arithmetic in general, is now much more reliable on the PPC
2653 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2654 platform now returns the right answer.
2655 * optimization: restored some effective method precomputation in
2656 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2657 precomputation is now tunable.
2658 * optimization: compiler-internal data structure use has been
2659 reviewed, and changes have been made that should improve the
2660 performance of the compiler by about 20%.
2661 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2662 simple-base-strings and simple-bit-vectors is improved.
2663 * optimization: the optimization of 32-bit logical and arithmetic
2664 functions introduced in version 0.8.3 on the x86 has been
2665 implemented on the mips, ppc and sparc platforms; an
2666 implementation of the same facility, but for 64-bit arithmetic,
2667 has been added for the alpha.
2668 * microoptimization: the compiler is better able to make use of the
2669 x86 LEA instruction for multiplication by constants.
2670 * bug fix: in some situations compiler did not report usage of
2671 generic arithmetic in (SPEED 3) policy.
2672 * bug 145b fix: compiler used wrong type specifier while converting
2673 MEMBER-types to numeric.
2674 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2676 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2677 index argument now works properly on the Alpha platform.
2678 * bug fix: floating point exception treatment on the Alpha platform
2680 * bug fix: FILE-POSITION works much better on string input and
2681 output streams. (thanks to Nikodemus Siivola)
2682 * bug fix: many threading/garbage collection symptoms sorted.
2683 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2684 might be pseudo-atomic.
2685 * internal change: Stopping for GC is now done with signals not
2686 ptrace. GC is now done in whichever thread wanted it, instead of
2688 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2690 * bug fix: result form in DO is not contained in the implicit
2692 * incompatible change: ICR structure is changed; the value part of
2693 CONTINUATION is now called LVAR; corresponding functions are
2694 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2695 * added type deriver for ISQRT (thanks to Robert E. Brown).
2696 * bug fix: better support for loading from the command line when an
2697 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2699 * fixed some bugs revealed by Paul Dietz' test suite:
2700 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2701 ** ROUND and FROUND now give the right answer when given very
2702 small float arguments.
2703 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2705 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2706 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2707 ** LCM should return a non-negative integer.
2708 ** PARSE-INTEGER returned the index of a terminator instead of the
2709 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2710 ** PARSE-INTEGER returned an incorrect index being applied to a
2712 ** LCM with two arguments of 0 returns 0 rather than signalling
2714 ** unsigned addition of a 32-bit constant with the high bit set no
2715 longer causes an internal compiler error on the x86.
2716 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2717 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2718 with negative last argument.
2719 ** byte specifiers with zero size and position no longer cause
2720 an error during type derivation.
2721 ** bignum multiplication on the Alpha platform now returns the
2723 * porting: The system now builds on SuSE AMD64, although it still
2724 generates a 32-bit binary.
2725 * .fasl file incompatibility: The fasl file version number has
2726 been incremented (because of the changes to internal compiler
2727 data structures referred to above).
2729 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2730 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2731 more accurately, on the Darwin kernel running on PowerPC hardware.
2732 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2733 * Compiler code deletion notes now signal a condition of type
2734 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2735 an associated MUFFLE-WARNING restart.
2736 * The compiler now performs limited argument count validation of
2737 constant format strings in FORMAT, and where appropriate in ERROR,
2738 CERROR and WARN. (thanks to Gerd Moellmann)
2739 * New ASDF-INSTALL contrib can be used for automatic download and
2740 installation of third-party Lisp code from CCLAN or other sites
2742 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2743 which forces another thread to execute a function supplied by the
2745 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2746 now accept and act upon their :ELEMENT-TYPE keyword argument.
2747 (reported by Martin Atzmueller, Edi Weitz)
2748 * bug fix: FILE-POSITION now accepts position designators up to
2749 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2750 is the greater. (thanks to Patrik Nordebo)
2751 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2752 Kalle Olavi Niemitalo)
2753 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2754 printable. (reported by Eric Marsden)
2755 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2756 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2757 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2758 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2759 (thanks to Stig Sandoe)
2760 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2761 UNREAD-CHAR now correctly includes the unread character in the
2762 target sequence. (thanks to Gerd Moellmann)
2763 * bug fix in threaded builds: the system can now be suspended and
2764 resumed by shell job control with minimal disruption.
2765 * bug fixes in times and timezones >2038AD
2766 * better handling of "where is GNU make?" problem in build scripts
2767 (thanks to Nikodemus Siivola)
2768 * new optimization: inside a named function any reference to a
2769 function with the same name is considered to be a self-reference;
2770 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2771 optimization quality.
2772 * new optimization on x86: logical functions and + now have
2773 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2774 used when the result is truncated to 32 bits.
2775 * VALUES declaration is partially enabled.
2776 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2777 * fixed some bugs revealed by Paul Dietz' test suite:
2778 ** The system now obeys the constraint imposed by
2779 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2780 types form a lattice under type intersection.
2781 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2782 ** ASSOC now ignores NIL elements in an alist.
2783 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2784 and (1+ MOST-POSITIVE-FIXNUM) answers.
2785 ** The addition of a method with invalid qualifiers to a generic
2786 function does not cause an error to be signalled immediately;
2787 a warning is signalled, and the error is generated only on
2788 calling the generic function.
2789 * changed .fasl file version number, in part to add type codes for
2790 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2791 obscure ANSI requirements
2793 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2794 * fixed bug 148: failure to inline-expand a local function left
2795 garbage, confusing the compiler.
2796 * fixed bugs 3cd: structure slot readers perform type check if the
2797 slot can have an invalid value (i.e. it is either not initialized
2798 or can be written with a less specific slot writer).
2799 * bug fix: the compiler now traps array references to elements off
2800 the end of an array; previously, the bounds checking in some
2801 circumstances could go off-by-one.
2802 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2804 * type declarations for array element types now obey the description
2805 on the CLHS page "Declaration TYPE", as per discussions on
2806 sbcl-help around 2003-05-08. This means that a declaration
2807 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2808 declaration, all references to BAR will be asserted or assumed
2809 (with THE, so dependent on compiler policy) to involve objects of
2810 type FOO. Note that no such declaration is implied in
2811 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2812 * declared types of functions from the "Conditions"
2813 chapter. (reported by Paul Dietz)
2814 * bug fix: CERROR accepts a function as its first argument.
2815 * bug fix: NTH an NTHCDR accept a bignum as index
2816 arguments. (reported by Adam Warner)
2817 * optimization: character compare routines now optimize comparing
2818 against a constant character. (reported by Gilbert Baumann)
2819 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2820 argument now works properly on the MIPS platform.
2821 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2822 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2823 declared to have a functional type, does not cause an error
2825 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2826 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2827 * fixed bug: if last continuation of a deleted block has a
2828 destination, this destination should be deleted too. (reported by
2830 * fixed a bug in the bootstrap process: the host compiler's values
2831 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2832 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2833 test case from Patrik Nordebo)
2834 * improved the ability of the disassembler on the PPC platform to
2835 provide helpful disassembly notes.
2836 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2837 the class in more cases than previously.
2838 * bug fix: FILE-POSITION now understands :START and :END for
2839 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2840 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2841 8) data. (thanks to David Lichteblau)
2842 * bug fix: it is possible to add a method to a generic function
2843 without lambda list.
2844 * bug fix: reader failed to signal END-OF-FILE inside an
2845 object representation. (reported by Nikodemus Siivola)
2846 * fixed some bugs revealed by Paul Dietz' test suite:
2847 ** LAST and [N]BUTLAST should accept a bignum.
2848 ** condition slot accessors are methods.
2849 ** (VECTOR NIL) is a subtype of STRING.
2851 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2852 * minor incompatible change: some nonsensical specialized lambda
2853 lists (used in DEFMETHOD) which were previously ignored now signal
2855 * minor incompatible change: the system is now aware of the types of
2856 variables in the COMMON-LISP package, and will signal errors for
2857 most violations of these type constraints (where previously they
2858 were silently accepted).
2859 * minor incompatible change: COMPILE-FILE now uses the freedom
2860 afforded (ANSI 3.2.2.3) to use derived function types for
2861 functions defined in the same file. This also permits the system
2862 to warn on static type mismatches and function
2863 redefinition. (Currently it does not work with high DEBUG level.)
2864 * minor incompatible change: VALUES declaration is disabled.
2865 * When issuing notes, the compiler now signals a condition of type
2866 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2867 restart for use in user handlers. It is expected that the
2868 COMPILER-NOTE condition will eventually become a condition
2869 supertype to a hierarchy of note types, which will then be
2870 handleable in a similar fashion. However, at the moment, no such
2871 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2872 but it's an implementation detail, not a classification for the
2874 * Changes in type checking closed the following bugs:
2875 ** type checking of unused values (192b, 194d, 203);
2876 ** template selection based on unsafe type assertions (192c, 236);
2877 ** type checking in branches (194bc).
2878 * A short form of VALUES type specifier has ANSI meaning (it has
2879 increased the number of situations when SBCL cannot perform type
2881 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2882 keywords or constants is permissible.
2883 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2884 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2885 classes. (thanks to Antonio Martinez)
2886 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2887 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2888 argument to a pretty-print stream. Instead, it leaves any such
2889 operations to DESCRIBE-OBJECT methods.
2890 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2892 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2893 lambda lists. (thanks to David Lichteblau)
2894 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2895 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2896 (thanks to Gerd Moellmann)
2897 * fixed bug 246: increased compilation speed of long
2898 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2900 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2902 * DEFCONSTANT now throws a condition of type
2903 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2904 constant to a non-EQL value; CONTINUE and ABORT restarts
2905 respectively change and preserve the value.
2906 * fixed bug 63: The code walker, part of the implementation of CLOS,
2907 is now better at handling symbol macros.
2908 * bug fix: There is no longer an internal implementation type named
2909 CL:LENGTH. (reported by Raymond Toy)
2910 * bug fix: In macro-like defining macros/special operators the
2911 implicit block does not enclose the lambda list.
2912 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2913 enclosed in parentheses) are not suitable as type specifiers, and
2914 their use properly signals an error now.
2915 * bug fix: An argument count mismatch for a type specifier in code
2916 being compiled no longer causes an unhandled error at compile
2917 time, but signals a compile-time warning.
2918 * fixed simple vector readable printing
2919 * bug fix: DESCRIBE takes more care over whether the class
2920 precedence list slot of a class is bound before accessing it.
2921 (reported by Markus Krummenacker)
2922 * bug fix: FORMATTER can successfully compile pretty-printer format
2923 strings which use variants of the ~* directive inside.
2924 * bug fix: SEARCH now applies its TEST predicate to the elements of
2925 the arguments in the correct order. (thanks to Wolfhard Buss)
2926 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2927 in type inference. (thanks to Robert E. Brown)
2928 * bug fix: Reading in symbols with an explicit package name of ""
2929 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2930 * fixed some bugs revealed by Paul Dietz' test suite:
2931 ** NIL is now allowed as a structure slot name.
2932 ** Arbitrary numbers, not just REALs, are allowed in certain
2933 circumstances in LOOP for-as-arithmetic clauses.
2934 ** Multiple class redefinitions before slot access no longer
2935 causes a type error.
2936 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2937 association between the name and a class.
2938 ** Generic functions with non-standard method-combination and over
2939 five methods all of which return constants no longer return NIL
2940 after the first few invocations. (thanks to Gerd Moellmann)
2941 ** CALL-NEXT-METHOD with no arguments now passes the original
2942 values of the arguments, even in the presence of assignment.
2943 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2945 ** DISASSEMBLE works with closures and funcallable instances.
2946 ** ADD-METHOD now returns the generic function, not the new method.
2947 ** FIND-METHOD signals an error if the lengths of the specializers
2948 is incompatible with the generic function, even if the ERRORP
2950 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2951 which its argument is a member.
2952 ** DEFCLASS only redefines the class named by its class-name
2953 argument if that name is the proper name of the class;
2954 otherwise, it creates a new class.
2955 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2956 of the UNBOUND-SLOT condition to the name of the slot.
2957 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2958 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2959 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2960 SLOT-MAKUNBOUND in the specified fashion.
2962 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2963 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2964 cross-compilation host. As a consequence, we can now bootstrap our
2965 way up to SBCL starting with a bare gcc toolchain and human-readable
2966 source code (first the source to CLISP, then the source to SBCL).
2967 * A contributed module containing a partial implementation of the
2968 simple-streams interface has been included. (thanks to Rudi
2970 * A contributed module implementing the RFC1321 Message Digest
2971 Algorithm, known as MD5, has been included.
2972 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2973 no longer has any effect, as the code controlled by this feature
2974 has been deleted. (As far as we know, no-one has ever built using
2975 this feature, and its semantics were confused in any case).
2976 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2977 work on conditions (as required by the ANSI specification),
2978 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2979 expected behaviour on conditions. Users should note, however,
2980 that such behaviour is not required by the ANSI specification,
2981 and so use of this behaviour may render their code unportable.
2982 * fixed some bugs revealed by Paul Dietz' test suite:
2983 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2985 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2986 ** SXHASH on condition objects no longer returns NIL.
2987 ** :ALLOCATION :CLASS slots are better treated; their values are
2988 updated on class redefinition, and initforms inherited from
2989 superclasses are applied.
2990 ** REMOVE-METHOD returns its generic function argument even when
2991 no method was removed.
2992 ** SHARED-INITIALIZE now initializes the values of the requested
2993 slots, including those with :ALLOCATION :CLASS.
2994 ** ALLOCATE-INSTANCE now works on structure classes defined via
2995 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2997 ** SLOT-EXISTS-P now works on conditions, as well as structures
2999 ** MAKE-LOAD-FORM now has the required methods on
3000 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3001 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3002 keyword, and now implements the SLOT-NAMES argument.
3003 ** methods with &OPTIONAL arguments no longer allow too many
3004 arguments to be passed in the call without error.
3005 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3006 option is consistent with the required arguments of the generic
3007 function lambda list.
3008 * bug fix: REQUIRE accepts a string designator. (Thanks to
3010 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3011 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3012 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3013 * bug fix: The compiler now checks for duplicated variables in macro
3015 * bug fix: SETQ on globals returns the correct value.
3016 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3017 not a COMPILER-ERROR (followed by some other strange error on
3018 choosing the CONTINUE restart).
3019 * bug fix: make.sh and friends are now more consistent in the way that
3020 they look for GNU "make".
3022 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3023 * experimental native threads support (on x86 Linux >=2.4 only).
3024 This is not compiled in by default: you need to add :SB-THREAD to
3025 the target features. See the "Beyond ANSI" chapter of the manual
3027 * fix for longstanding nonANSIism: The old distinction between
3028 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3029 The return value from CL:FIND-CLASS is now a CLOS class, and
3030 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3031 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3032 * An interface to the MetaObject Protocol, as described in Kiczales,
3033 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3034 MIT Press, 1991, is available from the SB-MOP package.
3035 * incompatible change: the SB-PCL package should now be considered
3036 a private implementation detail, and no longer a semi-private MOP
3038 * minor incompatible change: due to rearrangement for threads, the
3039 control stack and binding stack are now allocated at arbitrary
3040 addresses instead of being hardcoded per-port. Users affected by
3041 this probably have to be doing advanced things with shared
3042 libraries, and will know who they are.
3043 * minor incompatible change: Previously, all --eval forms used were
3044 processed with READ before any of them were processed with EVAL.
3045 Now each --eval form is processed with both READ and EVAL before
3046 the next --eval form is processed. (Thus package operations like
3047 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3048 work as the user might reasonably expect.)
3049 * minor incompatible change: *STANDARD-INPUT* is now only an
3050 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3052 * minor incompatible change: Y-OR-N-P is now character-oriented,
3053 not line oriented. Also, YES-OR-NO-P now works without errors.
3054 (thanks to Antonio Martinez)
3055 * sb-aclrepl module improvements: an integrated inspector, added
3056 repl features, and a bug fix to :trace command.
3057 * Known functions, which cannot be open coded by the backend, are
3058 considered to be able to check types of their arguments. (fixing
3059 a bug report by Nathan J. Froyd)
3060 * fixed a bug in computing method discriminating functions: It is
3061 now possible to define methods specialized on classes which have
3062 forward-referenced superclasses. (thanks to Gerd Moellmann)
3063 * fixed evaluation order in optional entries (reported by Gilbert
3065 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3066 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3067 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3068 required-by-AMOP NAME argument, as well as CLASS and
3069 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3070 * fixed bug 20: DEFMETHOD can define methods using names that are
3071 not the proper names of classes to designate class specializers.
3072 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3073 Unix file descriptors, instead of blowing up. (thanks to Antonio
3075 * Garbage collection refactoring: user-visible change is that a
3076 call to the GC function during WITHOUT-GCING will not do garbage
3077 collection until the end of the WITHOUT-GCING. If you were doing
3078 this you were probably losing anyway.
3079 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3080 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3081 TYPEP the latter but not the former.
3082 * The compiler issues a full WARNING for calls to undefined functions
3083 with names from the CL package.
3084 * MAP-INTO for a vector destination is open coded. (reported by
3085 Brian Downing on c.l.l)
3086 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3087 documentation string.
3088 * fixed some bugs revealed by Paul Dietz' test suite:
3089 ** COPY-ALIST now signals an error if its argument is a dotted
3091 ** Condition slots are now accessed more correctly in the presence
3092 of multiple initargs for a given slot.
3093 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3094 exclude restarts of the same name associated with a different
3096 ** DEFCLASS of forward-referenced classes with another
3097 forward-referenced class in the superclasses list no longer
3099 ** Condition slots are now initialized once each, not multiple
3100 times. (thanks to Gerd Moellmann)
3101 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3103 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3104 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3105 arguments contain duplicated elements.
3106 ** RESTART-CASE understands local macros.
3107 ** RESTART-CASE associates exactly its own restarts with a condition.
3108 ** ENDP in safe mode checks its argument to be of type LIST.
3109 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3110 in question is unbound.
3111 ** Optimized MAKE-INSTANCE functions no longer cause internal
3112 assertion failures in the presence of duplicate initargs.
3113 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3114 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3115 propagated even in the ctor optimized implementation of
3117 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3119 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3120 * a better implementation of SXHASH on (simple) bit vectors,
3121 measured both in execution speed and in distribution of results
3122 over the positive fixnums, has been installed. Likewise, a better
3123 implementation of EQUAL for simple bit vectors is now available.
3124 * fixed CEILING optimization for a divisor of form 2^k.
3125 * fixed bug 240 (emitting extra style warnings "using the lexical
3126 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3127 by Antonio Martinez)
3128 * fixed SXHASH, giving different results for NIL depending on type
3129 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3130 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3131 variable. (found by Rolf Wester)
3132 * SBCL does not ignore type declarations for special
3133 variables. (reported by rif on c.l.l 2003-03-05)
3134 * some bug fixes in contrib/sb-aclrepl/
3135 * fixed some bugs revealed by Paul Dietz' test suite:
3136 ** a bug in the CONS type specifier, whereby the CAR and CDR
3137 types got intertwined, has been fixed;
3138 ** the type system is now able to reason about the interaction
3139 between INTEGER and RATIO types more completely;
3140 ** APPEND, [N]REVERSE and NRECONC check that those their
3141 arguments, which must be proper lists, are really so;
3142 ** An array specialized to be unable to hold elements has been
3143 implemented, as required -- yes, really -- by ANSI;
3144 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3145 on malformed property lists;
3147 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3148 * incompatible packaging change: in line with Unix convention,
3149 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3150 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3151 * REQUIRE and PROVIDE are now optionally capable of doing something
3152 useful. See the documentation string for REQUIRE.
3153 * infrastructure for a managed SBCL contrib system: contributed
3154 modules in this release include:
3155 ** the ASDF system definition facility;
3156 ** an interface to the BSD Sockets API;
3157 ** an ACL-like convenience interface to the repl;
3158 (thanks to Kevin Rosenberg)
3159 ** an implementation of ROTATE-BYTE, with efficient implementation
3161 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3162 gives a closer approximation to the right answer than previously.
3163 (thanks to Raymond Toy)
3164 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3165 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3166 optional environment arguments, as required by ANSI.
3167 * fixed bugs in other functions taking environment objects, allowing
3168 calls with an explicit NIL environment argument to be compiled
3170 * fixed bug 228: primary return values from
3171 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3172 COMPILE or FUNCTION.
3173 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3174 :TYPE will no longer signal errors on innocuous objects.
3175 * fixed bug 231b: SETQ is better at respecting type declarations in
3176 the lexical environment.
3177 * fixed a bug in DEFCLASS: classes named by symbols with no or
3178 unprintable packages can now be defined.
3179 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3180 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3181 * fixed compiler failure related to checking types of functions.
3182 (reported by Robert E. Brown)
3183 * the compiler is now much more consistent in its error-checking
3184 treatment of bounding index arguments to sequence functions: in
3185 (SAFETY 3) code, errors will be signalled in almost all cases if
3186 invalid sequence bounding indices are passed to functions defined
3187 by ANSI to operate on sequences.
3188 * fixed a bug in the build procedure: documentation of SBCL-specific
3189 packages is now preserved and available in the final Lisp image.
3190 * lifted FDEFINITION lookup out of loops in the implementation of
3191 many list operations. (thanks to Robert E. Brown)
3192 * fixed a bug in the reader: the #n# reader macro now works for
3193 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3194 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3195 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3196 E. Brown and Tony Martinez respectively)
3197 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3198 SLOT-BOUNDP: in particular, it is now able to optimize them much
3199 better, and is now not vulnerable to having packages renamed.
3200 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3201 always called when a slot is not present in an instance. (thanks
3203 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3204 longer signal an error on unreading a character following EOF on
3205 the previous constituent stream. (thanks to Tony Martinez)
3206 * fixed some bugs revealed by Paul Dietz' test suite:
3207 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3208 not just nonnegative fixnums;
3209 ** the logical bit-array operators such as BIT-AND now accept an
3210 explicit NIL for their "opt-arg" argument (to indicate a
3211 freshly-consed result bit-array);
3212 ** ELT now signals an error on an invalid sequence index in safe
3214 ** the type system is now cleverer about negations of numeric
3215 types, and consequently understands the BIGNUM and RATIO types
3217 ** the type system is now cleverer about the interaction between
3218 INTEGER and RATIO types: while bugs still remain, many more
3219 cases are accurately computed;
3220 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3221 if it is in the last clause;
3222 ** CONSTANTLY now correctly returns a side-effect-free function in
3224 ** DECLARE is no longer treated as a special-operator; in
3225 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3226 * incremented fasl file version number due to the change in the
3227 DEFSTRUCT-SLOT-DESCRIPTION structure.
3229 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3230 * minor incompatible change: code processed by the "interpreter" or
3231 EVAL now has a compilation optimization policy of (DEBUG 2)
3232 (changed from (DEBUG 1)) to improve debuggability of interactive
3233 development, and to allow the use of the debug RETURN command in
3235 * an experimental implementation of the RETURN command for the
3236 debugger has been included. (thanks to Frederik Kuivinen)
3237 * fixed bug 62: constraints were not propagated into a loop.
3238 * fixed bug in embedded calls of SORT (reported and investigated by
3240 * fixed some bugs revealed by Paul Dietz' test suite:
3241 ** printing and reading of arrays with some dimensions having
3242 length 0 (thanks to Gerd Moellmann);
3243 ** BOA constructor with &AUX argument without a default value does
3244 not cause a type error;
3245 ** CONSTANTP now returns true for all self-evaluating objects.
3247 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3248 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3249 accessors that are related by inheritance, as specified in the
3250 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3251 Valtteri Vuorikoski)
3252 * The compiler is now able to inline functions that were defined in
3253 a complex lexical environment (e.g. inside a MACROLET).
3254 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3256 * Support for the upcoming FreeBSD-5.0 release has been included.
3257 (thanks to Dag-Erling Smorgrav)
3258 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3259 effect when it is not in a toplevel context.
3260 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3261 stand a better chance of being correct. (thanks to Gerd
3263 * fixed bug in COERCE, which now signals an error on coercing a
3264 rational to a bounded real type which excludes the expected
3266 * The compiler is now able to derive types more accurately from the
3267 COERCE and COMPILE functions.
3268 * fixed bug 223: functional binding is considered to be constant
3269 only for symbols in the CL package.
3270 * fixed bug 231: SETQ did not check the type of a variable being set
3271 (reported by Robert E. Brown)
3272 * A new optimization for MAKE-INSTANCE has been included, fixing
3273 various bugs (including relating to :ALLOCATION :CLASS slots and
3274 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3276 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3277 ** As required by ANSI, LOOP now disallows anonymous collection
3278 clauses such as COLLECT I in conjunction with aggregate boolean
3279 clauses such as THEREIS (= I 1);
3280 ** LOOP now signals an error when any variable is reused in the
3281 same loop (including the potentially useful construct analogous
3282 to WITH A = 1 WITH A = (1+ A);
3283 ** IT is only a special loop symbol within the first clause of a
3284 conditional loop clause;
3285 ** LOOP with a typed iteration variable over a hashtable now
3286 signals a type error iff it should.
3287 * fixed some other bugs revealed by Paul Dietz' test suite:
3288 ** FILE-STREAM now names the class previously known as FD-STREAM;
3289 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3290 argument) no longer signals an error;
3291 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3292 of the slot symbol, rather than using the current package
3293 ((:CONC-NAME "") continues to intern the slot's name in the
3295 * incremented fasl file version number, because of the incompatible
3296 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3297 of the new implementation of DEFINE-COMPILER-MACRO.
3299 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3300 * Support for building SBCL for MIPS platforms running in
3301 little-endian mode has now been checked in, and basic
3302 functionality on said platforms verified.
3303 * minor incompatible change: PCL now records the pathname of a file
3304 in which methods and the like are defined, rather than its
3306 * minor incompatible change: TRUENAME now considers the truename of
3307 a file naming a directory to be the pathname with :DIRECTORY
3308 component indicating that directory.
3309 * minor incompatible change: a NAMED clause in the extended form of
3310 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3311 reason for the previous behaviour is unclear.
3312 * more systematization and improvement of CLOS and MOP conformance
3313 in PCL (thanks to Gerd Moellman and Pierre Mai):
3314 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3316 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3317 primary methods with no specializers;
3318 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3320 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3321 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3322 FORWARD-REFERENCED-CLASSes; error reporting on
3323 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3325 ** SXHASH on CLOS instances now uses a slot internal to the
3326 instance to return different numbers on distinct instances,
3327 while preserving the same return value through invocations of
3329 ** DEFMETHOD signals errors when methods with longer incongruent
3330 lambda lists are added to generic functions;
3331 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3332 CLASS, as specified in AMOP;
3333 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3334 on the order returned by the primary method for classes of
3335 class STANDARD-CLASS;
3336 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3337 * fixed some bugs shown by Paul Dietz' test suite:
3338 ** DOLIST puts its body in TAGBODY;
3339 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3341 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3342 value producing form;
3343 ** if more variables are given to PROGV than values, extra
3344 variables are bound and made to have no value;
3345 ** NSUBSTITUTE on list arguments gets the right answer with
3347 ** ELT signals an error of type TYPE-ERROR when the index argument
3348 is not a valid sequence index;
3349 ** LOOP signals (at macroexpansion time) an error of type
3350 PROGRAM-ERROR when duplicate variable names are found;
3351 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3352 ** FUNCALL of special-operators now cause an error of type
3354 ** PSETQ now works as required in the presence of side-effecting
3355 symbol-macro places;
3356 ** NCONC accepts any object as its last argument;
3357 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3359 ** loop-for-as-package does not require a package to be explicitely
3361 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3363 * fixed bug 166: compiler preserves "there is a way to go"
3364 invariant when deleting code.
3365 * fixed bug 172: macro lambda lists with required arguments after
3366 &REST arguments now cause an error to be signalled. (thanks to
3368 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3369 bug. (thanks to Matthew Danish)
3370 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3372 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3373 arguments are lexically rebound. (thanks to Gerd Moellmann and
3375 * fixed bug 194: error messages are now more informative when there
3376 is no primary method applicable in a call to a generic
3377 function. (thanks to Gerd Moellmann)
3378 * fixed bug in command line argument checking (thanks to Julian
3380 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3381 (thanks to Matthew Danish)
3382 * incremented fasl file version number, because of the
3383 SXHASH-related changes in the layout of CLOS data structures
3385 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3386 * minor incompatible change: The runtime (the Unix executable named
3387 "sbcl") is now much pickier about the .core files it will load.
3388 Essentially it now requires .core files to descend from the same
3389 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3390 as the runtime does. (The intent is to prevent the crashes which
3391 can occur, and which can even be reported as mysterious failures,
3392 when people patch the sources or change the build parameters
3393 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3394 sbcl and .core files.)
3395 * fixed bug: VALUES-LIST is no longer optimized away.
3396 * fixed bug 142: The FFI conversion of C string values to Lisp
3397 string values no longer conses excessively. (thanks to Nathan
3398 Froyd porting Raymond Toy's fix to CMU CL)
3399 * began to systematize and improve MOP conformance in PCL (thanks to
3400 Nathan Froyd, Gerd Moellman and Pierre Mai):
3401 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3403 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3404 ** FINALIZE-INHERITANCE is now called on class finalization;
3405 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3406 argument precedence order.
3407 * fixed bug 202: The compiler no longer fails on functions whose
3408 derived types contradict their declared type.
3409 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3410 so it can be non-toplevel.
3411 * The fasl file version number has changed (because of the new
3412 implementation of DEFMACRO).
3413 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3414 safe code, that any length requirement by their type-specifier
3415 argument is valid. The exceptions to this are described in bug
3417 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3418 functions now check the types of their inputs as required by ANSI.
3419 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3420 introduced symbol is DECLAREd to be SPECIAL.
3421 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3422 * fixed bug: :COUNT argument to sequence functions may be negative
3423 * fixed bug: body of DO-SYMBOLS may contain declarations
3424 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3425 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3426 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3427 symbol macro only once
3428 * fixed printing of call frame when argument list is unavailable
3429 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3430 * compiler no longer signals WARNING on unknown keyword
3433 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3434 * A beta-quality port to the mips architecture running Linux,
3435 based on the old CMUCL backend, has been made. It has been tested
3436 on a big-endian kernel, and works sufficiently well to be able to
3437 rebuild itself; it has not been tested in little-endian mode.
3438 * fixed an inconsistency between gencgc.c and purify.c which made
3439 dumping/loading .core files unreliable
3440 * fixed bug 120a: The compiler now deals correctly with IFs where
3441 the consequent is the same as the alternative, instead of
3442 misderiving the return type. (thanks to Alexey Dejneka)
3443 * fixed bug 113: Logical pathnames are now dumpable (the logical
3444 host is resolved at load-time, throwing an error if it is not
3446 * fixed bug 174: FORMAT's error message is slightly clearer when a
3447 non-printing character is used in a format directive.
3448 * fixed several bugs in compiler checking of type declarations, i.e.
3449 violations of the Python "declarations are assertions" principle
3450 (thanks to Alexey Dejneka)
3451 * fixed several bugs in PCL's error checking (thanks to Gerd
3453 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3455 * fixed bug in compilation of functions as first class values
3456 (thanks to Antonio Martinez-Shotton)
3457 * The compiler's handling TYPE-ERRORs which it can prove will
3458 inevitably happen at runtime has been cleaned up and corrected
3459 in several ways. (thanks to Alexey Dejneka)
3460 * improved argument type checking for various basic arithmetic
3461 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3462 lavished on them in the past that they can be compiled in many
3463 ways in different special cases
3464 * fixed bug 181: compiler checks validity of user supplied type
3466 * cleaned up code flushing in optimization: Function calls which
3467 should signal errors for safety purposes (e.g. which ANSI says
3468 should signal errors when their arguments are of incorrect type)
3469 are no longer optimized away.
3470 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3471 * incremented fasl file version number, because changes in the
3472 implementation of sequence functions like COERCE caused
3473 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3474 in old inline expansions) to become undefined. (Actually these
3475 changes were later undone, so we might very well be binary
3476 compatible with 0.7.7 after all, but leaving the version number
3477 incremented seemed like the simplest and most conservative
3480 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3481 * An alpha-quality port to the parisc architecture running Linux,
3482 based on the old CMUCL backend, has been made. This, even more so
3483 than the other backends, should be considered still a work in
3484 progress; known problems include that the Linux kernel in 64-bit
3485 mode does not propagate the correct sigcontext structure to
3486 userspace, and consequently SBCL on a parisc64 kernel will not
3488 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3489 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3490 suppressed.) Also now that the compiler is looking at declarations
3491 in the environment, it checks optimization declarations as well,
3492 and suppresses inlining when (> DEBUG SPEED).
3493 * More fixes have been made to treatment of floating point exception
3494 treatment and other Unix signals. In particular, floating point
3495 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3496 * The detection and handling of control stack exhaustion (infinite
3497 or very deeply nested recursion) has changed. Stack exhaustion
3498 detection is now done by write-protecting pages at the OS level
3499 and applies at all optimization settings; when found, a
3500 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3501 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3502 be caught using IGNORE-ERRORS.
3503 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3504 correctly when transforming recursive LABELS functions to LETs.
3505 (thanks to Alexey Dejneka)
3506 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3507 that are names of constants or global variables.
3508 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3509 alien routines with docstrings.
3510 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3511 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3513 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3514 (thanks to Eric Marsden)
3515 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3516 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3517 * Bug fix: The SPARC backend can now compile functions involving
3518 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3519 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3520 to a functions expecting a PATHNAME-DESIGNATOR.
3521 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3522 lambda lists. (thanks to Alexey Dejneka)
3523 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3524 functions so that EXPORTing the name of the class doesn't cause
3525 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3526 to Antonio Martinez for reporting this)
3527 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3528 constant-folded without failing an assertion. (thanks to Einar
3529 Floystad Dorum for reporting this)
3530 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3531 types are now dealt with more correctly by the compiler.
3532 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3533 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3534 behaviour analogous to RENAME-FILE. This puts its behaviour more
3535 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3537 * The fasl file version number has changed again. (because of the
3538 bug fix involving the names of PCL MAKE-INSTANCE functions)
3540 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3541 * bug fix: Floating point exceptions are treated much more
3542 consistently on the x86/Linux and PPC/Linux platforms.
3543 * Array initialization with :INITIAL-ELEMENT is now much faster for
3544 cases when the compiler cannot open code the array creation, but
3545 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3546 array accesses have also seen a speed increase.
3547 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3548 specified. (This was at the root of some bad interactions between
3549 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3551 * bug fix: Internal error arguments for undefined functions are now
3552 computed correctly on the PPC/Linux platform.
3553 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3554 Raymond Toy's patch for CMU CL)
3555 * Support for the Solaris 9 operating environment has been included
3556 (thanks to Daniel Merritt)
3557 * A very ugly but hopefully complete draft of the missing FFI chapter
3558 of the manual has been created by reformatting the corresponding
3559 CMU CL manual chapter into (currently very ugly and incoherent)
3560 DocBook and bringing it up to date for SBCL behavior. Thus, the
3561 manual is now essentially complete, at least by my extreme
3562 once-and-only-once standards, whereby it's acceptable to refer to
3563 the doc strings of SB-EXT functions as the primary documentation.
3564 * The fasl file version number has changed again, due to cleanup of
3565 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3566 is no longer a static symbol.)
3568 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3569 * SBCL now builds with OpenMCL (version 0.12) as the
3570 cross-compilation host; also, more progress has been made toward
3571 bootstrapping under CLISP.
3572 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3574 * bug 158 fixed: The compiler can now deal with integer loop
3575 increments different from 1; fixing this turned out also to fix
3577 * bug 169 fixed: no more bogus warnings about using lexical bindings
3578 despite the presence of perfectly good SPECIAL declarations (thanks
3579 to David Lichteblau)
3580 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3581 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3582 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3584 * bug 180 fixed: Method combination specifications no longer ignore
3585 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3586 * bug fix: Structure type predicate functions now check their argument
3587 count as they should.
3588 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3589 correctly. (thanks to Pierre Mai)
3590 * minor incompatible change: The --noprogrammer option is deprecated
3591 in favor of the new --disable-debugger option, which is very similar.
3592 (The major difference is that it takes effect at a slightly different
3593 time at startup, causing handling of errors in --sysinit and
3594 --userinit files will be affected differently.) The
3595 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3596 been added to allow this functionality to be controlled from ordinary
3597 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3598 maintainers, who might want to run non-interactive scripts to
3599 build SBCL cores which will later be used interactively.)
3600 * minor incompatible change: The LOAD function no longer, when given
3601 a wild pathname to load, loads all files matching that pathname.
3602 Instead, an error of type FILE-ERROR is signalled.
3604 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3605 * bug 147 fixed: The compiler preserves its block link/count
3606 invariants more correctly now so that it doesn't crash. (thanks
3608 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3610 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3611 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3612 no-value-for-this-character as NIL (as specified by ANSI).
3613 * HOST-NAMESTRING on physical pathnames now returns a string that is
3614 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3615 (thanks to Christophe Rhodes)
3616 * The Alpha port handles icache flushing more correctly. (thanks to
3618 * More progress has been made toward bootstrapping under CLISP. (thanks
3619 to Christophe Rhodes)
3620 * The fasl file format has changed again, because dynamic loading
3621 on OpenBSD (which has non-ELF object files) motivated some cleanups
3622 in the way that foreign symbols are transformed and passed around.
3623 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3624 is no longer treated as whitespace by the reader, but instead as
3625 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3626 |A
\7fB|, instead of A as it used to.
3628 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3629 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3630 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3631 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3632 this as of 0.7.1.45, but was left out of the previous news section
3633 (thanks to Dan Barlow)
3634 * SBCL now runs on the Solaris operating system on SPARC architectures
3635 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3636 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3637 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3638 * SPARC backend cleanups, allowing builds of cores optimized for V8
3639 and V9 SPARCS, and also emission of code targeted to a particular
3640 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3642 * SBCL is closer to bootstrapping under CLISP, thanks to various
3643 fixes by Christophe Rhodes.
3644 * The fasl file format has changed again, to allow the compiler's
3645 INFO database to support symbol macros.
3646 * The user manual (in doc/) is formatted into HTML more nicely.
3647 (thanks to coreythomas)
3648 * The system is smarter about SUBTYPEP relationships, especially
3649 those involving NOT types (including types such as ATOM which are
3650 represented internally using NOT types). Thus SUBTYPEP is less
3651 likely to return (VALUES NIL NIL) in general, and in particular
3652 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3654 * The fasl file format has changed again, because the internal
3655 representation of types now includes a new slot to support the new
3656 SUBTYPEP-of-NOT-types logic.
3657 * (not a change in the main branch of SBCL, but a related prototype
3658 which can hopefully be merged into the main branch of SBCL in the
3659 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3660 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3661 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3662 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3663 dispatch macro character combinations. (thanks to Alexey Dejneka)
3664 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3665 that superficially look like logical namestrings correctly.
3666 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3668 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3669 default supplied-p) for &optional and &key arguments. (thanks to
3672 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3673 * incompatible change: The compiler is now less aggressive about
3674 tail call optimization, doing it only when (> SPACE DEBUG) or
3675 (> SPEED DEBUG). (This is an incompatible change because there are
3676 programs which relied on the old CMU-CL-style behavior to optimize
3677 away their unbounded recursion which will now die of stack overflow.)
3678 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3679 for non-GENCGC systems has been increased to 20M (since that
3680 seems much closer to the likely performance optimum for modern
3681 systems than the old 4M value was)
3682 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3683 and *DEBUG-PRINT-LEVEL*
3684 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3685 of CMU CL's support for SPARC, and various endianness and other
3686 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3687 * new syntactic sugar for the Unix command line: --load foo.bar is now
3688 an alternate notation for --eval '(load "foo.bar")'.
3690 ** The system now detects stack overflow and handles it gracefully,
3691 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3692 optimization settings. (This is a good thing in general, and
3693 its introduction in this version should be particularly timely
3694 for anyone whose code fails because of suppression of tail
3696 ** The system now hunts for the C variable "environ" in a more
3697 devious way, to avoid segfaults when the C library version differs
3698 between compile time and run time. (thanks to Christophe Rhodes)
3699 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3700 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3701 ** The compiler no longer issues bogus style warnings for undefined
3702 classes in the same source file as the DEFCLASSes which defined
3703 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3705 ** fixes in CONDITION class precedence list for undefined function
3706 errors (thanks to Alexei Dejneka)
3707 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3708 correctly. (thanks to Dan Barlow)
3709 ** portability fixes aiming at bootstrapping under CLISP (thanks
3710 to Dave McDonald and Christophe Rhodes)
3711 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3712 ** fixes in type translation and and type inference (thanks to
3714 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3715 ** various fixes in the new ports (thanks to Dan Barlow)
3716 * several changes related to debugging:
3717 ** suppression of tail recursion, as noted above
3718 ** stack overflow detection, as noted above
3719 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3720 is now the default. (For some time encapsulation has been more
3721 reliable than the breakpoint-based :ENCAPSULATE NIL
3722 implementation, at least on X86 systems; and I just noticed that
3723 encapsulation also seems closer to the spirit of the ANSI
3726 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3728 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3729 up properly again. (There was a packaging bug in 0.7.0 which
3730 left their definitions in SB-SYS::LOAD-FOREIGN and
3731 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3732 vital for most things which interface to C-level interfaces,
3733 like extensions working with sockets or databases or
3734 Perl-compatible regexes or whatever, and the need to fix
3735 this bug is the main reason that 0.7.1 was released so
3737 ** DEFGENERIC is now choosier about the methods it redefines, so that
3738 reLOADing a previously-LOADed file containing DEFGENERICs does
3739 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3740 cycle now works as it should. (thanks to Alexey Dejneka)
3741 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3742 fixed by Christophe Rhodes. (He actually submitted this patch
3743 months ago, and I delayed until after 0.7.0.)
3744 ** Bug 111 (internal compiler confusion about runtime checks on
3745 FUNCTION types) was fixed by Alexey Dejneka.
3746 * Some internal cleanups (getting rid of variables which aren't
3747 needed now that the byte interpreter is gone) caused the fasl
3748 file format number to change again.
3750 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3751 * major incompatible change: The default fasl file extension, i.e. the
3752 default extension for files produced by COMPILE-FILE, has changed
3753 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3755 ** There are many changes in the implementation of the compiler.
3756 SBCL is now essentially a compiler-only implementation of ANSI
3757 Common Lisp. EVAL still "interprets" a few special cases, but
3758 almost all the interesting cases are handled by creating
3759 a LAMBDA expression, calling COMPILE on it, then calling
3760 FUNCALL on the result.
3761 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3762 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3763 Since the code is newer, there might still be some new bugs
3764 (though not as many as before Martin Atzmueller's fixes:-). But
3765 the new code is substantially simpler and clearer, and hopefully
3766 any remaining bugs will be simpler, less fundamental, and more
3767 fixable then the bugs in the old code.
3768 ** The revised compiler is still a little unsteady on its feet.
3770 *** The debugging information it produces (particularly the names
3771 of FUNCTION objects) is sometimes much less useful than what
3772 the old compiler produced.
3773 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3774 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3775 within a MACROLET) has been temporarily weakened.
3776 ** There are new compiler optimizations for various functions:
3777 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3778 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3779 *** the math functions TRUNCATE, FLOOR, and CEILING
3780 *** the function-of-all-trades COERCE
3781 Mostly these should be transparent, but there's one
3782 potentially-annoying problem (bug 117): when the compiler
3783 inline-expands a function and does type analysis on the result,
3784 it can create control paths which have type mismatches, and
3785 when it can't prove that those control paths aren't taken,
3786 it will issue WARNINGs about the type mismatches. This is
3787 a particular problem in practice for the new sequence functions.
3788 It's not clear how this should be fixed, and for now, a
3789 workaround is given in the entry for 117 in the BUGS file.
3790 ** (Because of the interaction between the two previous items --
3791 occasional inlining problems and new inline expansions -- some
3792 of the new sequence function optimizations won't really kick in
3793 completely until debugging information, and then inlining, are
3794 straightened out in some future version.)
3795 * minor incompatible changes:
3796 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3797 DIRECTORY no longer implicitly promotes NIL slots of its
3798 pathname argument to :WILD. In particular, when you ask for the
3799 contents of a directory (which you used to be able to do without
3800 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3801 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3802 ** changes in behavior that ANSI explicitly defines to be
3803 implementation dependent:
3804 *** The new compiler-only implementation still conforms with ANSI,
3805 but acts a little different than before. Besides the obvious
3806 changes in performance tradeoffs (that the cost per form passed
3807 to EVAL has gone up, and the cost per form executed by EVAL
3808 has gone down), the behavior of the system changes a little
3809 because there are no longer any interpreted function objects.
3810 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3811 e.g. doing COMPILE on the output of interactive DEFUN is
3813 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3815 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3816 has changed from (:CL) to NIL.
3817 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3818 e.g. #\Newline and #\Tab, don't have names specified in the
3819 ANSI Common Lisp standard, is now based on their ASCII symbolic
3820 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3821 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3822 are no longer used for output.
3823 ** changes in internal implementation constants:
3824 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3825 4 million. (If your application spends a lot of time GCing and
3826 you have a lot of RAM, you might want to experiment with
3827 increasing it even more.)
3828 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3829 However, almost all old code should still continue to work without
3830 immediate update, as SB-C-CALL is now a (deprecated) nickname
3832 ** Old operator names in the style DEF-FOO are now deprecated in
3833 favor of new corresponding names DEFINE-FOO, for consistency with
3834 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3835 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3836 internal symbols, but a few supported extensions like
3837 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3838 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3839 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3840 etc. as you get deeper into recursive calls to the debugger
3841 command loop, instead of the old "5]", "5]]", "5]]]"
3842 sequence. (I was motivated to do this when squabbles between
3843 ILISP and SBCL left me very deeply nested in the debugger. In the
3844 short term, this change will probably provoke more ILISP/SBCL
3845 squabbles, but hopefully it will be an improvement in the long run.)
3846 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3847 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3848 function, since declaiming return types involving aliens is
3849 (1) annoyingly messy to do by hand and (2) vital to efficient
3850 compilation of code which calls such functions.
3851 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3852 longer reexported by the SB-EXT package. They're solely useful
3853 for alien code, so it seems more logical that you should get
3854 them from the SB-ALIEN package, not in SB-EXT.
3855 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3856 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3857 features. Instead, the code that they used to control is always
3858 built into the system.
3859 * many other bug fixes
3860 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3861 advantage of the new EVAL-WHEN stuff and to clean them up in
3862 general, and they are now more ANSI-compliant in a number of
3863 ways. Martin Atzmueller is responsible for a lot of this.
3864 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3866 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3867 *** correct ERROR type for various file operations
3868 *** some fixes for Lisp streams
3869 *** DEFMETHOD syntax checking
3870 *** changing old weird representation of debug information as
3871 strings (which, among their other deficiencies, don't transform
3872 correctly when you rename packages, and don't change their
3873 print representation when you change things like *PACKAGE*
3874 and *PRINT-LENGTH*) to symbols and lists of symbols
3875 He also made several improvements and fixed several bugs in DESCRIBE.
3876 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3878 *** misbehavior of WRITE-STRING/WRITE-LINE
3879 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3880 and several other LOOP problems as well
3881 *** DIRECTORY when similar filenames are present
3882 *** DEFGENERIC with :METHOD options
3883 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3884 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3885 *** argument ordering in FIND with :TEST option
3886 *** mishandled package designator argument in APROPOS-LIST
3887 *** various problems in the backquote readmacro
3888 *** a bug in APROPOS
3889 *** probably some others that I'm not describing very well here,
3890 since the CVS log documents them by reference to sbcl-devel
3891 messages, and the SourceForge archives aren't working well.:-(
3892 ** Dan Barlow improved the Alpha port (and is making progress on the
3893 PPC port, for those of you who think different).
3894 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3895 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3896 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3897 continues to work on the SPARC port (for those of you in a position
3898 to look down upon our little PC-compatible boxes from a great height).
3899 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3900 and uses that copy, rather than the current dynamic value, when
3901 it's trying to decide whether to truncate output. Thus e.g.
3902 (let ((*print-lines* 50))
3903 (pprint-logical-block (stream nil)
3905 (let ((*print-lines* 8))
3906 (print (aref possiblybigthings i) stream)))))
3907 should now truncate the logical block only at 50 lines, instead of
3908 often truncating it at 8 lines, as it did before.
3909 * The doc/cmucl/ directory, containing old CMU CL documentation
3910 from the time of the fork, is no longer part of the base system.
3911 SourceForge has shut down its anonymous FTP service, and with it
3912 my original plan for distributing the old CMU CL documentation
3913 there. For now, if you need these files you can download an old
3914 SBCL source release and extract them from it.
3915 * The fasl file version number changed again, for dozens of reasons,
3916 some of which are apparent above.
3918 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3919 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3920 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3921 patch, so that DISASSEMBLE output is much nicer.
3922 * The code in the SB-PROFILE package now seems reasonably stable.
3923 I still haven't decided what the final interface should look like
3924 (I'd like PROFILE to interact cleanly with TRACE, since both
3925 facilities use function encapsulation) but if you have a need
3926 for profiling now, you can probably use it successfully with
3927 the current CMU-CL-style interface.
3928 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3929 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3930 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3931 link now returns the dangling link itself, and for similar
3932 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3933 link itself. (In these cases the old code signalled an error and
3934 looped endlessly, respectively.) Thus, DIRECTORY now works even
3935 in the presence of dangling and cyclic symbolic links.
3936 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3937 is now a supported extension again, since the consensus on
3938 sbcl-devel was that it can be useful for ordinary development
3939 work, not just for debugging SBCL itself.
3940 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3941 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3942 that currently-defined functions might be redefined later with
3943 different return types.
3944 * Hash tables can be printed readably, as inspired by CMU CL code
3945 of Eric Marsden and SBCL code of Martin Atzmueller.
3946 * better error handling in CLOS method combination, thanks to
3947 Martin Atzmueller porting Pierre Mai's CMU CL patches
3948 * more overflow fixes for >16Mbyte I/O buffers
3949 * A bug in READ has been fixed, so that now a single Ctrl-D
3950 character suffices to cause end-of-file on character streams.
3951 In particular, now you only need one Ctrl-D at the command
3952 line (not two) to exit SBCL.
3953 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3955 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3956 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3957 does the right thing.
3958 * The implementation of some type tests, especially for CONDITION
3959 types, is now tidier and maybe faster, due to CMU CL code
3960 originally by Douglas Crosher, ported by Martin Atzmueller.
3961 * Some math functions have been fixed, and there are new
3962 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3963 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3964 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3965 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3966 likely to be built into sbcl-0.7.0.)
3967 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3968 CL, ported to SBCL by Martin Atzmueller)
3969 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3970 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3971 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3972 * There's a new slam.sh hack to shorten the edit/compile/debug
3973 cycle for low-level changes to SBCL itself, and a new
3974 :SB-AFTER-XC-CORE target feature to control the generation of
3975 the after-xc.core file needed by slam.sh.
3976 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3977 COMPILE-FILE is no longer supported, so that now every function
3978 gets an entry point, so that block compilation looks a little
3979 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3980 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3981 returns the number of bytes consed since the system started,
3982 rather than the number consed since the first time the function
3983 was called. (The new definition parallels ANSI functions like
3984 CL:GET-INTERNAL-RUN-TIME.)
3985 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3986 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3987 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3988 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3989 * Fasl file version numbers are now independent of the target CPU,
3990 since historically most system changes which required version
3991 number changes have affected all CPUs equally. Similarly,
3992 the byte fasl file version is now equal to the ordinary
3995 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3996 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3997 is no longer recognized. I apologize for this, because it was
3998 listed in SB-EXT as a supported extension, but I found that
3999 its existing behavior was poorly specified, as well as incorrectly
4000 specified, and it looked like too much of a mess to straighten it
4001 out. I have enough on my hands trying to get ANSI stuff to work..
4002 * many patches ported from CMU CL by Martin Atzmueller, with
4003 half a dozen bug fixes in pretty-printing and the debugger, and
4004 half a dozen others elsewhere
4005 * fixed bug 13: Floating point infinities are now supported again.
4006 They might still be a little bit flaky, but thanks to bug reports
4007 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4008 as flaky as they were.
4009 * The --noprogrammer command line option is now supported. (Its
4010 behavior is slightly different in detail from what the old man
4011 page claimed it would do, but it's still appropriate under the
4012 same circumstances that the man page talks about.)
4013 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4014 are now supported, and enabled by default. Thus, the compiler can
4015 handle many floating point and complex operations much less
4016 inefficiently. (Thus e.g. you can implement a complex FFT
4018 * The compiler now detects type mismatches between DECLAIM FTYPE
4019 and DEFUN better, and implements CHECK-TYPE more correctly, and
4020 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4021 thanks to patches from Martin Atzmueller.
4022 * various fixes to make the cross-compiler more portable to
4023 ANSI-conforming-but-different cross-compilation hosts (notably
4024 Lispworks for Windows, following bug reports from Arthur Lemmens)
4025 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4026 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4027 fixed thanks to Pierre Mai's CMU CL patches.
4028 * fixes to keep the system from overflowing internal counters when
4029 it tries to use i/o buffers larger than 16M bytes
4030 * fixed bug 45a: Various internal functions required to support
4031 complex special functions have been merged from CMU CL sources.
4032 (When I was first setting up SBCL, I misunderstood a compile-time
4033 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4034 * improved support for type intersection and union, fixing bug 12
4035 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4036 more obscure bugs as well
4037 * some steps toward byte-compiling non-performance-critical
4038 parts of the system, courtesy of patches from Martin Atzmueller
4039 * Christophe Rhodes has made some debian packages of sbcl at
4040 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4041 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4042 stable, but are nonetheless usable. When he's ready, I'd be happy
4043 to add them to the SourceForge "File Releases" section. (And if
4044 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4045 * new fasl file format version number (because of changes in
4046 internal representation of (OR ..) types to accommodate the new
4047 support for (AND ..) types, among other things)
4049 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4050 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4052 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4054 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4055 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4056 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4057 * DESCRIBE now works on structure objects again.
4058 * Most function call argument type mismatches are now handled as
4059 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4060 know whether the function will be redefined before the call is
4061 executed. (The compiler could flag local calls with full WARNINGs,
4062 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4063 it doesn't keep track of enough information to know whether calls
4064 are local in this sense.)
4065 * Compiler output is now more verbose, with messages truncated
4066 later than before. (There should be some supported way for users
4067 to override the default verbosity, but I haven't decided how to
4068 provide it yet, so this behavior is still controlled by the internal
4069 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4070 src/compiler/ir1util.lisp.)
4071 * Fasl file format version numbers have increased again, because
4072 support for the Gray streams extension changes the layout of the
4073 system's STREAM objects.
4074 * The Gray subclassable streams extension now works, thanks to a
4075 patch from Martin Atzmueller.
4076 * The full LOAD-FOREIGN extension (not just the primitive
4077 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4078 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4079 but like most other programs, it defaults to copying the Unix
4080 environment from the original process instead of starting the
4081 new process in an empty environment.
4082 * Extensions which manipulate the Unix environment now support
4083 an :ENVIRONMENT keyword option which doesn't smash case or
4084 do other bad things. The CMU-CL-style :ENV option is retained
4085 for porting convenience.
4086 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4087 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4089 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4091 * A patch from Martin Atzmueller seems to have solved the SIGINT
4092 problem, and as far as we know, signal-handling now works cleanly.
4093 (If you find any new bugs, please report them!)
4094 * The system no longer defaults Lisp source file names to types
4095 ".l", ".cl", or ".lsp", but only to ".lisp".
4096 * The compiler no longer uses special default file extensions for
4097 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4098 seems to expect a single default extension for all compiled code,
4099 and there's no compelling reason to try to stretch the standard
4100 to allow two different extensions.) Instead, byte-compiled files
4101 default to the same extension as native-compiled files.
4102 * Fasl file format version numbers have increased again, because
4103 a rearrangement of internal implementation packages made some
4104 dumped symbols in old fasl files unreadable in new cores.
4105 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4106 many fewer weird special cases.
4107 * Bug #17 (differing COMPILE-FILE behavior between logical and
4108 physical pathnames) has been fixed, and some related misbehavior too,
4109 thanks to a patch from Martin Atzmueller.
4110 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4111 by Tim Moore, ported to SBCL by Martin Atzmueller.
4112 * Martin Atzmueller fixed several filesystem-related problems,
4113 including bug #36, in part by porting CMU CL patches, which were
4114 written in part by Paul Werkowski.
4115 * More compiler warnings in src/runtime/ are gone, thanks to
4116 more patches from Martin Atzmueller.
4117 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4120 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4122 * DESCRIBE now works on CONDITION objects.
4123 * The debugger now handles errors which arise when trying to print
4124 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4126 * The build system now uses an additional file, customize-target-features.lisp,
4127 to allow local modifications to the target *FEATURES* list. (The point of
4128 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4129 debugging features enabled, without having to worry about propagating it
4130 into everyone's system when I do a "cvs update".) When no
4131 customize-target-features.lisp file exists, the target *FEATURES* list
4132 should be constructed the same way as before.
4133 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4134 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4135 warn about behavior which is undefined under the ANSI spec. Note: This
4136 is specified by ANSI, but it's not very popular with programmers.
4137 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4138 macro in the SBCL sources for an example of a workaround which you
4139 might use to make portable ANSI-standard code which does what you want.
4140 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4141 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4142 when it's used as a non-toplevel form. (This is required in order
4143 to implement the DEFCONSTANT-EQX macro.)
4144 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4145 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4146 funny things, due to bugs in the implementation of EVAL-WHEN
4147 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4148 non-toplevel DEFCONSTANTs are uncommon.)
4149 * The core file version number and fasl file version number have been
4150 incremented, because the old noncompliant DEFCONSTANT behavior involved
4151 calling functions which no longer exist, and because I also took the
4152 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4153 * fixed bug 1 (error handling before read-eval-print loop starts), and
4154 redid debugger restarts and related debugger commands somewhat while
4156 ** The QUIT debugger command is gone, since it did something
4157 rather different than the SB-EXT:QUIT command, and since it never
4158 worked properly outside the main toplevel read/eval/print loop.
4159 Invoking the new TOPLEVEL restart provides the same functionality.
4160 ** The GO debugger command is also gone, since you can just invoke
4161 the CONTINUE restart directly instead.
4162 ** The TOP debugger command is also gone, since it's redundant with the
4163 FRAME 0 command, and since it interfered with abbreviations for the
4165 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4167 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4168 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4169 some porting work by Martin Atzmueller)
4170 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4171 with a boatload of patches which he ported to SBCL. Now that those
4173 ** The system tries to make sure that its low-priority messages
4174 are prefixed by semicolons, to help people who like to use
4175 syntax highlighting in their ILISP buffer. (This patch
4176 was originally due to Raymond Toy.)
4177 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4178 patches originally written by Raymond Toy.
4179 ** The compiler understands coercion between single-value and
4180 multiple-VALUES type expressions better, getting rid of some very
4181 weird behavior, thanks to patches originally by Robert MacLachlan
4182 and Douglas Crosher.
4183 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4184 lambda lists, thanks to a patch originally by Pierre Mai.
4185 ** The system no longer bogusly warns about "abbreviated type
4187 ** The compiler gets less confused by inlining and RETURN-FROM,
4188 thanks to some patches originally by Tim Moore.
4189 ** The system no longer hangs when dumping circular lists to fasl
4190 files, thanks to a patch originally from Douglas Crosher.
4191 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4192 undefined function error.
4193 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4194 in structure slot initforms) for now, documented workaround instead:-|
4195 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4196 * fixed bug 5: added stubs for various Gray stream functions called
4197 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4198 installed, at least appropriate type errors are generated
4199 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4200 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4201 consistently in DEFMETHOD forms.
4202 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4203 it doesn't seem to affect SBCL after all
4204 * The C runtime system now builds with better optimization and many
4205 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4207 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4209 * The system is now under CVS at SourceForge (instead of the
4210 CVS repository on my home machine).
4211 * The new signal handling code has been tweaked to treat register
4212 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4213 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4214 downstream, e.g. in debug-int.lisp, has implicit dependencies
4215 on the unsignedness of integer representation of machine words,
4216 and that caused the system to bomb out with infinite regress
4217 when trying to recover from type errors involving signed values,
4218 e.g. (BUTLAST '(1 2 3) -1).)
4219 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4220 (This was one of the bugs Peter Van Eynde reported back in July.)
4221 * The system now uses code inspired by Colin Walters' O(N)
4222 implementation of MAP (from the cmucl-imp@cons.org mailing
4223 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4224 inline the MAP operation, and there is more than one
4225 sequence argument to the MAP call (so that it can't just
4226 do ETYPECASE once and for all based on the type of the
4227 single sequence argument). (The old non-inline implementation
4228 of the general M-argument sequence-of-length-N case required
4229 O(M*N*N) time when any of the sequence arguments were LISTs.)
4230 * The QUIT :UNIX-CODE keyword argument has been renamed to
4231 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4232 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4234 * Raymond Wiker's patches to port dynamic loading from Linux to
4235 FreeBSD have been added.
4236 * The BUGS file is now more nearly up to date, thanks in large part
4237 to Martin Atzmueller's review of it.
4238 * The debugger now flushes standard output streams before it begins
4239 its output ("debugger invoked" and so forth).
4240 * The core version number and fasl file version number have both
4241 been incremented, because of incompatible changes in the layout
4243 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4244 used to not be called for a saved Lisp image.)
4245 * Martin Atzmueller's version of a patch to fix a compiler crash,
4246 as posted on sbcl-devel 13 September 2000, has been installed.
4247 * Instead of installing Martin Atzmueller's patch for the
4248 compiler transform for SUBSEQ, I deleted the compiler transform,
4249 and transforms for some similar consing operations.
4250 * A bug in signal handling which kept TRACE from working on OpenBSD
4252 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4253 away by constant folding
4254 * The system now defines its address space constants in one place
4255 (in the Lisp sources), and propagates them automatically elsewhere
4256 (through GENESIS and the sbcl.h file). Therefore, patching the
4257 address map is less unnecessarily tedious and error-prone. The
4258 Lisp names of address space constants have also been systematized.
4259 * CVS tags like dollar-Header-dollar have been removed from
4260 the sources, because they have never saved me trouble and
4261 they've been source of trouble working with patches and other
4262 diff-related operations.
4263 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4264 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4266 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4268 * The system has been ported to OpenBSD.
4269 * The system now compiles with a simple "sh make.sh" on the systems
4270 that it's supported on. I.e., now you no longer need to tweak
4271 text in the target-features.lisp-expr and symlinks in src/runtime/
4272 by hand, the make.sh takes care of it for you.
4273 * The system is no longer so grossly inefficient when compiling code
4274 involving vectors implemented as general (not simple) vectors (VECTOR T),
4275 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4276 which dares to use the various sequence functions on non-simple
4277 vectors, takes less of a performance hit.
4278 * There is now a primitive type predicate VECTOR-T-P
4279 to test for the (VECTOR T) type, so that e.g.
4280 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4281 can now be compiled with some semblance of efficiency. (The old code
4282 turned the type declaration into a full call to %TYPEP at runtime!)
4283 * AREF on (VECTOR T) is still not fast, since it's still compiled
4284 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4285 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4286 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4287 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4288 without making full calls to SUBTYPEP at runtime.
4289 (Some analogous efficiency issues for non-simple vectors specialized to
4290 element types other than T, or for non-simple multidimensional arrays,
4291 have not been addressed. They could almost certainly be handled the
4292 same way if anyone is motivated to do so.)
4293 * The changes in array handling break binary compatibility, so
4294 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4295 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4296 instead of (VALUES T T).
4297 * By following the instructions that Dan Barlow posted to sbcl-devel
4298 on 2 July 2000, I was able to enable primitive dynamic object
4299 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4300 functionality is not implemented (since it calls ld to resolve
4301 library references automatically, requiring RUN-PROGRAM for its
4302 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4303 try to resolve library references) is now supported.
4304 * The system now flushes the standard output streams when it terminates,
4305 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4306 them at several other probably-convenient times, e.g. in each pass of
4307 the toplevel read-eval-print loop, and after evaluating a form given
4308 as an "--eval" command-line option. (These changes were motivated by a
4309 discussion of stream flushing issues on cmucl-imp in August 2000.)
4310 * The source transform for TYPEP of array types no longer assumes
4311 that an array whose element type is a not-yet-defined type
4312 is implemented as an array of T, but instead punts, so that the
4313 type will be interpreted at runtime.
4314 * There is now some support for cross-compiling in make.sh: each of
4315 the phases of make.sh has its own script. (This should be transparent
4316 to people doing ordinary, non-cross-compile builds.)
4317 * Since my laptop doesn't have hundreds of megabytes of memory like
4318 my desktop machine, I became more motivated to do some items on
4319 my to-do list in order to reduce the size of the system a little:
4320 ** Arrange for various needed-only-at-cold-init things to be
4321 uninterned after cold init. To support this, those things have
4322 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4323 symbols with such names are now uninterned after cold init).
4324 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4325 fasl files for cold load.
4326 ** Remove the old compiler structure pooling code (which used to
4327 be conditional on the target feature :SB-ALLOC) completely.
4328 ** Redo the representation of some data in cold init to be more compact.
4329 (I also looked into supporting byte compiled code at bootstrap time,
4330 which would probably reduce the size of the system a lot, but that
4331 looked too complicated, so I punted for now.)
4332 * The maximum signal nesting depth in the src/runtime/ support code has
4333 been reduced from 4096 to 256. (I don't know any reason for the very
4334 large old value. If the new smaller value turns out to break something,
4335 I'll probably just bump it back up.)
4336 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4338 * Many, many bugs reported by Peter Van Eynde have been added to
4339 the BUGS list; some have even been fixed.
4340 * While enabling dynamic object file loading, I tried to make the
4341 code easier to understand, renaming various functions and variables
4342 with less ambiguous names, and changing some function calling
4343 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4344 * While trying to figure out how to do the OpenBSD port, I tried to
4345 clean up some of the code in src/runtime/. In particular, I dropped
4346 support for non-POSIX signal handling, added various comments,
4347 tweaked the code to reduce the number of compilation warnings, and
4348 renamed some files to increase consistency.
4349 * To support the new automatic configuration functionality in make.sh,
4350 the source file target-features.lisp-expr has been replaced with the
4351 source file base-target-features.lisp-expr and the machine-generated
4352 file local-target-features.lisp-expr.
4353 * fixed a stupid quoting error in make.sh so that using CMU CL
4354 "lisp -batch" as cross-compilation host works again
4356 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4358 * DESCRIBE no longer tries to call itself recursively to describe
4359 bound/fbound values, so that it no longer fails on symbols which are
4360 bound to themselves (like keywords, T, and NIL).
4361 * DESCRIBE now works on generic functions.
4362 * The printer now prints less-screwed-up representations of closures
4363 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4364 * A private symbol is used instead of the :EMPTY keyword previously
4365 used to mark empty slots in hash tables. Thus
4366 (DEFVAR *HT* (MAKE-HASH-TABLE))
4367 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4368 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4369 now does what ANSI says that it should. (You can still get
4370 similar noncompliant behavior if bang on the hash table
4371 implementation with all the symbols you get back from
4372 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4373 This breaks binary compatibility, since tests for equality to
4374 :EMPTY are wired into things like the macroexpansion of
4375 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4377 * There's now a minimal placeholder implementation for CL:STEP,
4378 as required by ANSI.
4379 * An obscure bug in the interaction of the normal compiler, the byte
4380 compiler, inlining, and structure predicates has been patched
4381 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4382 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4384 * Missing ordinary arguments in a macro call are now detected even
4385 when the macro lambda list contains &KEY or &REST.
4386 * The debugger no longer complains about encountering the top of the
4387 stack when you type "FRAME 0" to explicitly instruct it to go to
4388 the top of the stack. And it now prints the frame you request even
4389 if it's the current frame (instead of saying "You are here.").
4390 * As specified by ANSI, the system now always prints keywords
4391 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4393 * The default initial SIZE of HASH-TABLEs is now smaller.
4394 * Type information from CLOS class dispatch is now propagated
4395 into DEFMETHOD bodies, so that e.g.
4396 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4398 is now basically equivalent to
4399 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4400 (DECLARE (TYPE SINGLE-FLOAT X))
4402 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4403 operation, without having to do run-time type dispatch.
4404 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4405 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4406 * Since I don't seem to be making big file reorganizations very often
4407 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4408 is overflowing my ability to conveniently back them up), I've finally
4409 checked the system into CVS. (The CVS repository is on my home system,
4410 not at SourceForge -- putting it on SourceForge might come later.)
4411 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4412 high-level GC-NOTIFY-FOO functions send their output. (There's
4413 still very little control of where low-level verbose GC functions
4414 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4415 less than it used to -- the GC-NOTIFY-FOO functions are now under
4416 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4417 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4418 in only one place in the source code, and propagates it automatically
4419 everywhere that it's needed. Thus e.g. when I bump the version from
4420 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4421 * The C source files now include boilerplate legalese and documentation
4422 at the head of each file (just as the Lisp source files already did).
4423 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4424 to his page will be replaced with a link to his new CLiki service.
4426 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4428 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4429 * The build process now looks for GNU make under the default name "gmake",
4430 instead of "make" as it used to. If GNU make is not available as "gmake"
4431 on your system, you can change this default behavior by setting the
4432 GNUMAKE environment variable.
4433 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4434 can build without error under CMU CL.
4436 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4438 * There is now a partial SBCL user manual (with some new text and some
4439 text cribbed from the CMU CL manual).
4440 * The beginnings of a profiler have been added (starting with the
4441 CMU CL profiler and simplifying and cleaning up). Eventually the
4442 main interface should be through the TRACE macro, but for now,
4443 it's still accessed through vaguely CMU-CL-style functions and macros
4444 exported from the package SB-PROFILE.
4445 * Some problems left over from porting CMU CL to the new
4446 cross-compilation bootstrap process have been cleaned up:
4447 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4448 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4449 part when getting rid of the compiler *BACKEND* stuff.)
4450 ** The value of *NULL-TYPE* was screwed up, because it was
4451 being initialized before the type system knew the final
4452 definition of the 'NULL type. This screwed up several key
4453 optimizations in the compiler, causing inefficiency in all sorts
4454 of places. (I found it because I wanted to understand why
4455 GET-INTERNAL-RUN-TIME was consing.)
4456 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4457 PROCLAIM FTYPE information. Unfortunately this broke binary
4458 compatibility again, since now the forms output by DEFGENERIC
4459 to refer to functions which didn't exist in 0.6.3.
4460 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4461 can use the new (as of 0.6.3) transform for SOME into MAP into
4463 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4464 values to (INTEGER 0 1000000), so that the time code will no longer
4465 occasionally get blown up by Linux returning 1000000 microseconds
4466 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4467 its output conform to the ANSI spec. (Alas, this makes its output
4468 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4469 * A full call to MAP NIL with a single sequence argument no longer conses.
4470 * fixes to problems pointed out by Martin Atzmueller:
4471 * The manual page no longer talks about multiprocessing as though
4472 it were currently supported.
4473 * The ILISP support patches have been removed from the distribution,
4474 because as of version 5.10.1, ILISP now supports SBCL without us
4475 having to maintain patches.
4476 * added a modified version of Raymond Toy's recent CMU CL patch for
4477 EQUALP comparison of HASH-TABLE
4479 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4481 * The system still can't cross-compile itself with
4482 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4483 entails), but at least it can compile more of itself that way
4484 than it used to be able to, and various buglets which were uncovered
4485 by trying to cross-compile itself that way have now been fixed.
4486 * This release breaks binary compatibility again. This time
4487 at least I've incremented the FASL file format version to 2, so that the
4488 problem can be detected reliably instead of just causing weird errors.
4489 * various new style warnings:
4490 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4491 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4492 ** using the lexical binding of a variable named in the *FOO* style
4493 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4494 as specified by ANSI.
4495 * *RANDOM-STATE* is no longer automatically initialized from
4496 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4497 default behavior of the system is to repeat its behavior every time
4498 it's run. If you'd like to change this behavior, you can always
4499 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4500 old convention there was no comparably easy way to get the system to
4501 repeat its behavior every time it was run.
4502 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4503 FTYPE declarations has been removed, in favor of their ANSI
4504 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4505 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4506 the types of their sequence arguments can be determined at compile time.
4507 This is done through a new open code expansion for MAP which eliminates
4508 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4509 argument types can be determined at compile time.
4510 * The optimizer now transforms COERCE into an identity operation when it
4511 can prove that the coerced object is already of the correct type. (This
4512 can be a win for machine generated code, including the output of other
4513 optimization transforms, such as the MAP transform above.)
4514 * Credit information has been moved from source file headers into CREDITS.
4515 * Source file headers have been made more standard.
4516 * The CASE macro now compiles without complaining even when it has
4519 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4521 * (Note that the way that the PCL macroexpansions were rewritten
4522 to accommodate the change in DEFGENERIC below breaks binary
4523 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4524 not run under sbcl-0.6.2. Once we get out of alpha releases,
4525 i.e. hit release 1.0.0, we'll probably try to maintain binary
4526 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4527 and sbcl-1.4.4. Until then, however, it might be fairly common
4528 for maintenance releases to break binary compatibility.)
4529 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4531 * The reporting of unhandled signals has been changed to print some
4532 explanatory text as well as the report form. (Previously only
4533 the report form was printed.)
4534 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4535 it defines, so that the compiler no longer issues undefined function
4536 warnings for compiled-but-not-yet-loaded generic functions.
4537 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4538 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4539 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4540 section of the ANSI spec are supported.
4541 * The "" nickname for the "KEYWORD" package has been removed.
4542 The reader still handles symbol tokens which begin with a package marker
4543 as keywords, but it doesn't expose its mechanism for doing so in the
4544 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4545 * The system now issues STYLE-WARNINGs for contradictory TYPE
4546 proclamations. (Warnings for contradictory FTYPE proclamations would
4547 be nice too, but those can't be done usefully unless the type system
4548 is made smarter about FUNCTION types.)
4549 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4550 systematized, so that "*target-*.lisp is supposed to exist only on the
4551 target and imply that there's a related file which exists on the
4552 host, and *host-*.lisp is supposed to exist only on the host and imply
4553 that there's a related file which exists on the target. This involves a
4554 lot of renaming. Hopefully the acute confusion caused by the renaming
4555 will be justified by the reduction in chronic confusion..
4556 ** runtime-type.lisp -> early-target-type.lisp
4557 ** target-type.lisp -> late-target-type.lisp
4558 ** early-host-format.lisp -> early-format.lisp
4559 ** late-host-format.lisp -> late-format.lisp
4560 ** host-error.lisp -> misc-error.lisp
4561 ** early-error.lisp -> early-target-error.lisp
4562 ** late-error.lisp -> late-target-error.lisp
4563 ** host-defboot.lisp -> early-defboot.lisp
4564 ** code/misc.lisp -> code/target-misc.lisp
4565 ** code/host-misc.lisp -> code/misc.lisp
4566 ** code/numbers.lisp -> code/target-numbers.lisp
4567 ** code/early-numbers.lisp -> numbers.lisp
4568 ** early-host-type.lisp -> early-type.lisp
4569 ** late-host-type.lisp -> late-type.lisp
4570 ** host-typep.lisp -> typep.lisp
4571 ** load.lisp -> target-load.lisp
4572 ** host-load.lisp -> load.lisp
4573 ** host-disassem.lisp -> disassem.lisp
4574 ** host-insts.lisp -> insts.lisp
4575 ** byte-comp.lisp -> target-byte-comp.lisp
4576 ** host-byte-comp.lisp -> byte-comp.lisp
4577 ** host-signal.lisp -> signal.lisp
4578 ** host-defstruct.lisp -> defstruct.lisp
4579 ** late-target-type.lisp -> deftypes-for-target.lisp
4580 Furthermore, several other previously target-only files foo.lisp (e.g.
4581 hash-table.lisp and random.lisp) have been split into a target-and-host
4582 foo.lisp file and a target-only target-foo.lisp file, with their key type
4583 definitions in the target-and-host part, so that the cross-compiler will
4584 know more about target types.
4585 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4586 gone away. In their place are various *BACKEND-FOO* variables
4587 corresponding to the slots of the old structure.
4588 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4589 into the target SBCL has been fixed.
4590 * The chill.lisp system for loading cold code into a running SBCL
4592 * Support for the CMU CL "scavenger hook" extension has been removed.
4593 (It was undocumented and unused in the CMU CL sources that SBCL was
4594 derived from, and stale in sbcl-0.6.1.)
4595 * Various errors in the cross-compiler type system were detected
4596 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4597 (enabling various consistency checks). Many of them were fixed,
4598 but some hard problems remain, so the compiler is back to
4599 running without *TYPE-SYSTEM-INITIALIZED* for now.
4600 * As part of the cross-compiler type system cleanup, I implemented
4601 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4602 * I have started adding UNCROSS calls throughout the type system
4603 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4604 on cross-compiler input files will be able to go away, and various
4606 * CONSTANTP now returns true for quoted forms (as explicitly required
4609 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4611 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4612 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4613 (MAKE-LIST -1). In the longer term, it ought to become true
4614 that declarations are assertions even at SAFETY 1. For now, it's not
4615 quite true even at SAFETY 3, but it's at least more nearly true..
4616 (Note that this change seems to increases the size of the system by
4617 O(5%) and to decrease the speed of the compiler by 20% or more.)
4618 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4619 for the problem of printing dozens of lines of distracting information
4620 about low-level system machinery as part of the top stack frame
4621 on entry to the debugger when an undefined function was called.
4622 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4623 is not reset to COMMON-LISP-USER.
4624 * Compilation of stuff related to dyncount.lisp has been made conditional
4625 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4626 smaller. The various dyncount-related symbols have been moved into
4627 a new "SB-DYNCOUNT" package.
4628 * tty-inspect.lisp has been renamed to inspect.lisp.
4629 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4630 feature has gone away. (When we eventually port to other flavors of
4631 libc and/or Unix, we'll try to make the differences between flavors
4632 invisible at the user level.)
4633 * Various other *FEATURES* tags, and/or their associated conditionals,
4634 have been removed if obsolescent, or given better documentation, or
4635 sometimes given more-mnemonic names.
4637 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4639 * tidied up "make.sh" script
4640 * tidied up system directory structure
4641 * better "clean.sh" behavior
4642 * added doc/FOR-CMUCL-DEVELOPERS
4643 * many many small tweaks to output format, e.g. removing possibly-confusing
4644 trailing #\. character in DESCRIBE-INSTANCE
4645 * (EQUALP #\A 'A) no longer signals an error.
4646 * new hashing code, including EQUALP hashing
4647 * tidied up Lisp initialization and toplevel
4648 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4649 * command line argument processing
4650 * added POSIX-GETENV function to deal with Unix-ish environment variables
4651 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4652 terminating SBCL on EOF
4653 * non-verbose GC by default
4654 * There is no more "sbcl" shell script; the sbcl file is now the C
4655 runtime executable (just like CMU CL).
4656 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4658 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4659 symbol and package information as Lisp native symbol and package objects
4660 instead of strings naming symbols and strings naming packages. This way,
4661 whenever packages are renamed (as in warm init), debug information is
4662 transformed along with everything else.
4663 * tweaked the optimization policy declarations which control the building
4664 of SBCL itself. Now, among other things, the system no longer saves
4665 source location debugging information. (This helps two problems at once
4666 by reducing SBCL size and by keeping SBCL from trying to look for its
4667 sources -- which may not exist -- when reporting errors.)
4668 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4669 debugging and testing purposes
4670 * cleaned up printing, making the printer call PRINT-OBJECT for
4671 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4672 methods, giving nearly-ANSI behavior
4673 * converted almost all special variables to use *FOO* naming convention
4674 * deleted PARSE-TIME functionality, since it can be done portably
4675 * moved some files out of cold init into warm init
4676 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4678 * regularized formatting of source files
4679 * added an install.sh script
4680 * fixed ridiculous memory usage of cross-compiler by making
4681 compiler/alloc.lisp not try to do pooling unless it can hook
4682 itself into the GC of the cross-compilation host. Now the system
4683 builds nicely on my old laptop.
4684 * added :SB-ALLOC in target-features.lisp-expr
4685 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4686 was not implemented)
4687 * re-did condition handling and note reporting in the compiler. Notes
4688 are no longer handled by signalling conditions. Style warnings
4689 and warnings are handled more correctly and reported in such a way
4690 that it's easy to find one or the other in your output (so that you
4691 can e.g. figure out which of many problems caused COMPILE-FILE to
4693 * changed the severity of several compiler warnings from full WARNING
4694 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4695 compiler note reporting so that it doesn't use the condition system
4696 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4697 COMPILE-FILE command)
4698 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4699 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4700 no longer supported, since their implementation was deeply intertwingled
4701 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4702 * removed bogus "support" for compiler macros named (SETF FOO), and
4703 removed the compiler macro for SETF INFO (but only after making a fool
4704 of myself on the cmucl-imp mailing list by posting a bogus patch for
4705 DEFINE-COMPILER-MACRO..)
4706 * Compiled files containing forms which have side effects on the Lisp
4707 reader (such as DEFPACKAGE forms) are now handled more correctly.
4708 (Compiler queuing of top level lambdas has been suppressed by setting
4709 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4710 * deleted various currently-unused source files, e.g. gengc.lisp. They
4711 may be added back at some point e.g. when porting to other architectures,
4712 but until they are it's distracting to distribute them and to try to
4714 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4715 there were so many of them they're just distractions, and UNCROSS is
4716 known to be able to handle the current sources
4717 * moved PROFILE functionality into TRACE, so that it will be clear
4718 how the wrapping and unwrapping of functions when you profile them
4719 interacts with the wrapping and unwrapping of functions when you
4720 trace them. (Actually, the functionality isn't there yet, but at least
4721 the interface specification is there. Hopefully, the functionality will
4722 arrive with some future maintenance release.)
4723 * removed host-oops.lisp
4724 * changed signature of QUIT function to allow UNIX-CODE argument
4725 * fixed READ-SEQUENCE bug
4726 * tweaked verbose GC output so that it looks more like the progress
4727 output that ANSI specifies for functions like LOAD
4728 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4729 * added <http://sbcl.sourceforge.com> to the banner information printed by