1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
4 (see documentation for details.)
5 * revived support for OpenBSD (contributed by Josh Elsasser)
6 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
7 no longer appear as (NIL ...) frames in backtraces.
8 * bug fix: ROOM no longer suffers from occasional (AVER (SAP=
9 CURRENT END)) failures.
10 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
11 is now actually exported from SB-EXT as documented. (reported by
13 * bug fix: sb-aclrepl now correctly understands how to inspect
14 single-floats on 64-bit platforms where single-floats are not boxed.
15 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
16 SBCL-specific optimize qualities.
18 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
19 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
20 an executable in the search path, and does so in the child
21 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
22 been removed; it can be found in the CVS history, for somebody who
23 needs that search behavior (see the manual).
24 * minor incompatible change: compiler policy re. weakening type
25 checks has changed: now type checks are weakened on if SAFETY < 2
27 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
28 unparsing of directory pathnames as files. Analogously,
29 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
30 filename to parse into a directory pathname.
31 * enhancement: implicit generic function creation now signals a
32 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
33 users can bind handlers for and muffle around calls to LOAD.
34 * enhancement: RUN-PROGRAM allows unicode arguments and environments
35 to be used (using the default stream external format), and allows
36 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
37 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
38 strings and vectors whose element-type or simplicity is not fully
39 known at compile-time.
40 * optimization: STRING-TRIM and related functions no longer allocate
41 a new string when no trimming needs to be performed. These functions
42 are also faster than before when the input string has been declared
44 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
45 * optimization: READ-LINE is significantly faster for files containing
47 * optimization: non-open coded uses of character comparison operators
48 (e.g. char=) no longer cons when called with more than one parameter
49 on platforms supporting dynamic-extent allocation.
50 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
51 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
52 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
54 * bug fix: some sequence functions elided bounds checking when
56 * bug fix: too liberal weakening of union-type checks when SPEED >
58 * bug fix: more bogus fixnum declarations in ROOM implementation
61 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
62 * new feature: MAKE-HASH-TABLE now experimentally accepts a
63 :SYNCHRONIZED argument, which makes the hash-table safe for
64 concurrent accesses (but not iteration.) See also:
65 SB-EXT:WITH-LOCKED-HASH-TABLE, and
66 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
67 * optimization: CONCATENATE on strings is an order of magnitue faster
68 in code compiled with (> SPEED SPACE).
69 * optimization: SUBSEQ is ~50% faster on lists.
70 * bug fix: bug 417 fixed -- source location reporting is now more robust.
71 * bug fix: SUBSEQ on a list will now correctly signal an error if if
72 END is smaller then START.
73 * bug fix: SB-PROFILE will no longer report extra consing for nested
74 calls to profiled functions.
75 * bug fix: ROOM implementation had bogus fixnum declarations which
76 could cause type-errors when calling ROOM on large images.
77 * bug fix: if file compilation is aborted, the partial fasl is now
78 deleted, and COMPILE-FILE returns NIL as the primary value.
79 * bug fix: number of thread safety issues relating to SBCL's internal
80 hash-table usage have been fixed.
81 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
82 be returned from its body when the values were being returned
83 using unknown-values return convection and the W-P-O was wrapped
84 inside an UNWIND-PROTECT.
85 * bug fix: sb-posix should now compile again under Windows, enabling
88 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
89 * incompatible change: hash-table accessor functions are no longer
90 automatically protected by locks. Concurrent accesses on the same hash-table
91 from multiple threads can give inconsistent results or even corrupt the
92 hash-table completely. Multi-threaded applications should do their own
93 locking at the correct granularity. In the current implementation it is
94 still safe to have multiple readers access the same table, but it's not
95 guaranteed that this property will be maintained in future releases.
96 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
97 and will signal an error at runtime.
98 * enhancement: SB-THREAD package now exports a semaphore interface.
99 * enhancement: CONS can now stack-allocate on x86 and
100 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
102 * enhancement: nested lists can now be stack allocated on
103 platforms providing stack allocation support.
104 * enhancement: dynamic-extent support has been extended to support
105 cases where there are multiple possible sources for the stack
107 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
108 if the mutex is uncontested on Linux.
109 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
110 as specified by the CLHS. (thanks to Tobias Rittweiler)
111 * bug fix: NaN comparison now works on x86-64.
112 * bug fix: CLOSE :ABORT T on a stream with pending output now
114 * bug fix: instances of non-standard metaclasses using standard
115 instance structure protocol sometimes missed the slot type checks
117 * bug fix: known functions can be inlined in high-debug code.
119 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
120 * minor incompatible change: the MSI installer on Windows no longer
121 associates .lisp and .fasl files with the installed SBCL.
122 * minor incompatible change: :UNIX is no longer present in *FEATURES*
123 on Windows. (thanks to Luis Oliviera)
124 * new feature: SB-CLTL2 contrib module now implements
125 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
126 * optimization: scavenging weak pointers is now more efficient,
127 requiring O(1) instead of O(N) per weak pointer to identify
128 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
129 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
130 method bodies using constant slot-names when the first argument is
131 a specializer parameter for the method.
132 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
133 names, when the class of the instance is a direct instance
134 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
135 as slow as the constant slot-name case.)
136 * optimization: member type construction is now O(N) instead
138 * optimization: UNION and NUNION are now O(N+M) for large
139 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
141 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
142 now more readable in environments like Slime which display it.
143 (thanks to Tobias C. Rittweiler)
144 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
145 was able to infer the correct argument type for the object on which
146 the CAS operation was being performed.
147 * bug fix: copy propagation interfered with parallel assignment
148 semantics in local calls. (reported by Paul Khuong)
149 * bug fix: the signed modular fixnum shift compiled to wrong code on
150 x86 and x86-64. (spotted by a slight modification to some of
153 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
154 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
155 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
156 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
158 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
159 and generic function now print the object identity for anonymous
160 instances. (thanks to Attila Lendvai)
161 * enhancement: as an extension to MOP, SBCL now supports SETF of
162 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
163 (thanks to Attila Lendvai)
164 * enhancement: sb-cover has an alternate annotation mode which puts
165 the form annotations at the car of the form, instead of annotating
166 it completely. The benefit of this mode is that it shows better
167 which forms were instrumented by the compiler.
168 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
169 by printer control variables. (reported by Dan Corkill)
170 * bug fix: system leaked memory when delayed output was performed by
171 the OS in smaller chunks then expected. (thanks to David Smith)
172 * bug fix: system leaked memory when file streams were not closed
174 * bug fix: large objects written to slow streams that were modified
175 after the write could end up with the modified state written to
176 the underlying file descriptor.
177 * bug fix: multiple threads operating in parallel on the same stream
178 could cause buffer-overflows.
179 * bug fix: source location information is stored correctly
180 (broken since 1.0.6). This bug would generally show up as the
181 Slime debugger higlighting the wrong form when the sldb-show-source
183 * bug fix: Branch forms are again annotated as branches in the sb-cover
185 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
186 on x86-64. (reported by Gregory Vanuxem)
187 * bug fix: EQUALP could return wrong results for structures with raw
188 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
189 word). (reported by Vjacheslav Fyodorov)
190 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
193 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
194 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
195 atomic compare-and-swap operations on threaded platforms.
196 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
197 allows assining a global minimum value to optimization qualities
198 (overriding proclamations and declarations).
199 * enhancement: closed over variables can be stack-allocated on x86
201 * performance bug fix: GETHASH and (SETF GETHASH) are once again
203 * optimization: slot definition lookup is now O(1). This speeds up
204 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
205 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
206 * optimization: ASSOC and MEMBER can now be open-coded for all
207 combinations of keyword arguments when second argument is constant
208 and SPEED >= SPACE. In other cases a specialized version is
210 * bug fix: using obsoleted structure instances with TYPEP and
211 generic functions now signals a sensible error.
212 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
213 (reported by Kristoffer Kvello)
214 * bug fix: backtrace construction is now more careful when making
215 lisp-objects from pointers on the stack, to avoid creating bogus
216 objects that can be seen by the GC.
217 * bug fix: defaulting of values in contexts expecting more than 7
218 variables now works on x86-64. (reported by Christopher Laux)
219 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
221 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
222 as the property-list of a symbol.
223 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
224 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
225 situations requested, are once again file-compileable. (reported
228 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
229 * MOP improvement: support for user-defined subclasses of
230 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
231 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
232 the expansion of DEFMETHOD, is responsible for generating a form
233 which creates a list of specializers when evaluated. Additional
234 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
235 debugging and introspective support.
236 * minor incompatible change: the (unsupported) spinlock interface
237 has changed: free spinlock now has the value NIL, and a held spinlock
238 has the owning thread as its value.
239 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
240 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
242 * enhancement: name of a socket-stream is now "a socket" instead of
244 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
245 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
246 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
247 for generic functions. (Thanks to Tobias C. Rittweiler)
248 * optimization: bignum printing speed has been improved by 20-40%
249 (depending on the bignum size.)
250 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
252 * bug fix: the cache used by the CLOS to store precomputed effective
253 methods, slot offsets, and constant return values is now thread and
255 * bug fix: generic function dispatch function updating is now thread
256 and interrupt safe (in the sense that the known issues have been
258 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
259 * bug fix: interning EQL-specializers is now thread and interrupt safe.
260 * bug fix: asdf systems with dependencies to the SB-POSIX or
261 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
262 * bug fix: interrupt safety of applicable method computation has been
265 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
266 * new contrib: sb-cover, an experimental code coverage tool, is included
268 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
269 significantly faster.
270 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
271 produce more efficient code on x86-64 if the compiler can determine
272 that (+ INDEX <constant>) does not require a bounds check and FOO
273 has an element type at least 8 bits wide.
274 * enhancement: a new, experimental synchronous timeout facility is
275 provided. Refer to SB-SYS:WITH-DEADLINE for details.
276 * enhancement: when a symbol name conflict error arises, the
277 conflicting symbols are always printed with a package prefix.
278 (thanks to Kevin Reid)
279 * enhancement: stepping is now once again supported on the SPARC and
280 MIPS platforms. (It is also now more likely to work on CheneyGC
282 * enhancement: sb-sprof can now also track and report accurate call
284 * bug fixes: the treatment of non-standard subclasses of
285 SB-MOP:SPECIALIZER is more correct.
286 * incompatible change: PURIFY no longer copies the data from the
287 dynamic space into the static and read-only spaces on platforms
288 that use the generational garbage collector
289 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
291 * bug fix: GC race condition occasionally resulting in crashes with
292 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
294 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
296 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
297 a STYLE-WARNING to be signalled (regression from 1.0.4.)
298 * bug fix: an asynchronous interrupt could previously leave the
299 system running with GC inhibited.
300 * bug fix: a DECLARE form evaluated at top-level now causes an error
301 rather than silently (or verbosely) returning NIL.
302 * bug fix: trying to dissassemble functions compiled at high DEBUG could
303 result in a error being signalled due to source form lookup errors.
304 (reported by Peter Graves)
306 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
307 * incompatible change: removed writer methods for host-ent-name,
308 host-ent-addresses -- changing the values did not update the DNS
310 * minor incompatible change: changed experimental JOIN-THREAD interface
311 * documentation: the manual now lists reader and writer methods
312 in class slot documentation sections. (thanks to Richard M Kreuter)
313 * documentation: unwinding from asyncronous events has been
314 documented as unsafe.
315 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
316 in multithreaded application code.
317 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
318 platforms. (thanks to James Anderson for the optimization hint)
319 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
321 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
322 variants no longer cons.
323 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
324 their NOT- variants no longer cons.
325 * optimization: EQUAL hash tables no longer use SXHASH for objects
326 of all data types, but instead use an EQL hash for types for which
327 EQUAL is the same as EQL.
328 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
329 are significantly faster.
330 * optimization: new STRING-OUTPUT-STREAM implementation is much
331 faster for large outputs and conses 30% less on average.
332 * enhancement: XREF information is now collected for references made
333 to global variables using SYMBOL-VALUE and a constant argument.
334 * enhancement: SIGINT now causes a specific condition
335 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
336 * bug fix: FILE-POSITION used to signal an error in some cases where
337 ANSI requires it to return NIL.
338 * bug fix: ADJUST-ARRAY is now interrupt-safe.
339 * bug fix: adding and removing fd-handlers is now interrupt-safe.
340 * bug fix: inlined calls to C now ensure 16byte stack alignment on
342 * bug fix: bad type declaration in the CLOS implementation has
343 been fixed. (reported by James Anderson)
344 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
345 (thanks to Lutz Euler)
346 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
347 required by the CLHS. (reported by Samium Gromoff)
348 * bug fix: dead unbound variable references now signal an error.
349 (reported by Marco Monteiro)
350 * bug fix: / with an unused value was being deleted in safe code.
351 (thanks to Marco Monteiro and Kevin Reid)
352 * bug fix: number of characters that can be written onto a single
353 line in a file is unlimited.
354 * bug fix: some GC deadlocks caused by asynchronous interrupts have
355 been fixed by inhibiting interrupts for when GC is disbled.
356 * bug fix: some interrupt safety issues with GETHASH, (SETF
357 GETHASH), CLRHASH and REMHASH have been fixed.
358 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
359 specifier no longer causes infinite recursion.
360 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
361 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
362 * bug fix: an &environment argument with the correct variable information
363 is passed to macros that are expanded during byte compilation.
364 (reported by Samium Gromoff)
365 * bug fix: a logic error was causing the hash function for bignums to
366 have excessive amounts of collisions. (reported by Faré Rideau)
367 * bug fix: modifying the contents of an array could change the return
368 value of SXHASH on that array, which is only allowed for strings
369 and bit vectors. (bug introduced in 0.9.16)
370 * improvement: the x86-64/darwin port now passes all tests (except
371 for the debugger tests) but should still be considered
372 experimental until this is fixed.
373 * improvement: a style-warning is signaled for CASE (etc) clauses with
374 duplicate keys. (thanks to Kevin Reid)
375 * improvement: macos/x86 and macos/x86-64 now use mach exception
376 handlers for dealing with illegal instructions (for trapping and
377 error handling) and memory protection violations (for GC).
379 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
380 * new platform: experimental support for x86-64/darwin (MacOS).
381 * incompatible change: the thread-safe (on most platforms) getaddrinfo
382 and getnameinfo sockets functions are used instead of gethostbyaddr
383 and gethostbyname, on platforms where the newer functions are available.
384 As a result, the ALIASES field of HOST-ENT will always be NIL on these
386 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
387 don't print the startup banner, but behave as if --noinform was passed
388 as a command line argument. (thanks to Kevin Reid)
389 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
390 * optimization: code using alien values with undeclared types is much faster.
391 * optimization: the compiler is now able to open code SEARCH in more cases.
392 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
393 * bug fix: using standardized COMMON-LISP special variables as loop
394 variables no longer signals bogus package lock violations. (reported
396 * bug fix: declaring local loop variables to be of a range-limited type
397 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
398 (reported by Andras Simon)
399 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
400 bugs remain on x86-64.)
401 * bug fix: the #= and ## reader macros now interact reasonably with
402 funcallable instances.
403 * bug fix: type-checks for function arguments were compiled using the
404 compiler policy settings of the wrong lexical environment (in 1.0.2
406 * bug fix: SHADOW accepts characters as string designators, as required
407 by the spec (thanks to Eric Marsden)
408 * bug fix: fixed GC safety issues when foreign functions are called with
409 non-base strings as arguments
410 * bug fix: more consistent error output for fatal-compiler-warnings, like
412 * bug fix: functions with proper names were showing up as NIL in
413 backtraces (reported by Edi Weitz, regression in 1.0.2)
415 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
416 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
417 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
418 produce more efficient code on the x86 if the compiler can determine
419 that (+ INDEX <constant>) does not require a bounds check and FOO
420 has an element type at least 8 bits wide.
421 * bug fix: references to undefined variables are handled the same way
422 in toplevel forms as in the normal compiler
423 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
425 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
426 (thanks to Jon Buller)
427 * improvement: faster compilation times for complex functions
428 * improvement: added readlink support to SB-POSIX (thanks to Richard
431 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
432 * improvement: experimental support for mach exception handling on
433 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
435 * improvement: support for GBK external format.
436 (thanks to Chun Tian (binghe))
437 * improvement: the debugger now displays variables that have been closed
438 over, in code compiled with (DEBUG 2) or higher
439 * improvement: support for executable cores on NetBSD (thanks to
441 * new feature: added a RESTART-FRAME debugger command
442 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
443 be used to provide an implementation for FILE-POSITION on Gray streams
444 (thanks to Eric Marsden)
445 * new feature: add syslog, openlog and closelog support to SB-POSIX
446 (thanks to Richard Kreuter)
447 * optimization: the function call overhead in code compiled with
448 a high DEBUG optimization setting is significantly
449 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
450 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
451 (thanks to Tony Martinez)
452 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
453 evaluated once (reported by Kevin Reid)
454 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
455 works again (thanks to Kilian Sprotte)
456 * bug fix: an error is signaled for tagbodies with duplicate tags
457 (thanks to Stephen Wilson)
458 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
459 * bug fix: Win32 port can now handle foreign code unwinding Lisp
460 stack frames from alien callbacks.
461 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
462 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
463 65k pages (thanks to David Woodhouse)
464 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
466 changes in sbcl-1.0.1 relative to sbcl-1.0:
467 * new platform: FreeBSD/x86-64, including support for threading.
468 * new feature: the compiler stores cross-referencing information
469 abount function calls (who-calls), macroexpansion (who-macroexpands)
470 and special variables (who-binds, who-sets, who-references) for code
471 compiled with (< SPACE 3). This information is available through the
472 sb-introspect contrib.
473 * new feature: users may subclass SEQUENCE, and have instances of
474 these classes interoperate with standard Common Lisp functions if
475 a number of methods are defined. (This feature is experimental
476 and the interface subject to change based on feedback from SBCL
477 users and the general community)
478 * improvement: sb-sprof traces call stacks to an arbitrary depth on
479 x86/x86-64, rather than the previous fixed depth of 8
480 * improvement: another pthread back-end of mutex "pthread-futex".
481 * bug fix: non-ascii command-line arguments are processed correctly
482 (thanks to Yaroslav Kavenchuk)
483 * bug fix: non-required arguments were not passed correctly when a method
484 defined using DEFMETHOD was called from a mop-generated method using
485 CALL-NEXT-METHOD (reported by Pascal Costanza)
486 * bug fix: recursion is now permitted in accessors through
487 SLOT-UNBOUND. (reported by Pascal Costanza)
488 * bug fix: an error was signaled at startup if the HOME environment
489 variable was defined, but had an empty value (reported by Peter Van Eynde)
490 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
491 signal a PROGRAM-ERROR, not a BUG.
492 * bug fix: SB-POSIX:READDIR works when built with large file support.
493 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
495 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
496 for better automatic indentation support. (thanks to Matt Pillsbury)
497 * optimization: loading generic functions no longer takes O(n^2) time,
498 proportional to the amount of methods in the generic function
499 (reported by Todd Sabin and Jeremy Brown)
500 * optimization: the FIND and POSITION family of sequence functions
501 are significantly faster on arrays whose element types have been
503 * improvements to the Windows port:
504 ** Intermittent heap corruption problems have been fixed. (thanks
505 to Alastair Bridgewater)
506 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
508 ** Lisp is able to unwind foreign exception frames from alien
509 callbacks. (thanks to Alastair Bridgewater)
511 changes in sbcl-1.0 relative to sbcl-0.9.18:
512 * improvement: experimental support for threading on FreeBSD/x86.
513 (thanks to NIIMI Satoshi)
514 * improvement: runtime option --dynamic-space-size can be used
515 to set the size of the dynamic space reserved on startup.
516 * improvement: floating point modes in effect are now saved in
517 core, and restored on startup.
518 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
519 startup, not time since first call to GET-INTERNAL-REAL-TIME.
520 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
521 threads are not running after *SAVE-HOOKS* have run.
522 * improvement: writes to CLOS instance slots are type-checked in code
523 compiled with (SAFETY 3)
524 * improvement: floating-point exception handling on FreeBSD (thanks to
526 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
527 (thanks to Zach Beane)
528 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
530 * improvement: added support for the Shift-JIS external format.
531 (contributed by NIIMI Satoshi)
532 * improvement: callbacks are supported on Linux/PPC. (thanks to
534 * bug fix: compiler bug triggered by a (non-standard) VALUES
535 declaration in a LET* was fixed. (reported by Kaersten Poeck)
536 * bug fix: file compiler no longer confuses validated and already
537 dumped structurres. (reported by Kaersten Poeck)
538 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
539 fill-pointer signals a type-error as required. (thanks to
541 * bug fix: disassemly of funcallable instances works.
542 * bug fix: single stepping on PPC.
543 * bug fix: fix thread-safety problems in the type system (generally
544 manifesting as nonsensical errors like "STRING is a bad type specifier
545 for sequences" or "The value 1 is not of type FIXNUM")
546 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
547 (reported by Josip Gracin)
548 * bug fix: an error is signaled for attempts to displace arrays with
549 incompatible element types (thanks to Mario Mommer)
550 * bug fix: more correct handling of wide characters in debug info
551 (bug reported by Attila Lendvai and fixed by Juho Snellman)
552 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
553 and don't cause extra consing
554 * optimization: MAP and MAP-INTO are significantly faster on vectors
555 whose elements types have been declared.
556 * Improvements to SB-SPROF:
557 ** Support for allocation profiling
558 ** Reduced profiling overhead, especially for long profiling runs
559 * Improvements to the Windows port:
560 ** floating point exceptions are now reported correctly.
561 ** stack exhaustion detection works partially.
562 ** more accurate GET-INTERNAL-REAL-TIME.
563 ** better RUN-PROGRAM behaviour in case of errors in the child
565 ** PROBE-FILE now simplifies pathnames correctly.
566 ** DIRECTORY now works correctly with :WILD-INFERIORS.
567 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
568 1st 1970 (although time timezone data will be unreliable).
569 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
571 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
572 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
573 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
575 * bug fix: two potential GC deadlocks affecting threaded builds.
576 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
577 returns T (reported by Anton Kazennikov)
578 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
579 with non-variable places
580 * bug fix: remove a race condition in the setting of
581 funcallable-instance functions, this should make threaded CLOS
582 code more stable against memory faults.
583 * bug fix: corruption of specials when unbinding is interrupted by an
584 asynchronous unwind (reported by Hannu Koivisto)
585 * improvement: the debugger will now also display local variables that
586 are only used once, for code compiled with a DEBUG optimization quality
589 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
590 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
591 * incompatible change: External-format support for FFI calls. The
592 SB-ALIEN:C-STRING no longer implies an ASCII
593 external-format. Instead the string is subject to external-format
594 conversion. Additionally return values of type SB-ALIEN:C-STRING
595 are by default of type (SIMPLE-ARRAY CHARACTER), not
596 SIMPLE-BASE-STRING. For an alien type that behaves like the old
597 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
598 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
599 * incompatible change: SB-EXT package no longer contains the
600 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
601 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
603 * incompatible change: the single-stepper is no longer available
604 on Alpha, Mips and Sparc platforms.
605 * minor incompatible change: the direct superclasses of
606 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
607 not (STANDARD-OBJECT FUNCTION). This makes the
608 class-precedence-lists of GENERIC-FUNCTION and
609 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
611 * minor incompatible change: the default stream external format on
612 non-unicode SBCL is no longer detected from the locale, but is always
614 * new feature: Add a version of evaluator that uses an interpreter instead
615 of the compiler. EVAL still uses the compiler by default, to switch it
616 to use the interpreter, set the value of the variable
617 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
618 * minor incompatible change: the single-stepper REPL has been merged
619 with the normal debugger (see the "Stepping" heading of the debugger help
620 for more details). The debugger command STEP will no longer switch
621 to the single-stepper REPL.
622 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
623 for a type now works.
624 * bug fix: loading of default sysinit file works. (thanks to Leonid
626 * bug fix: better detection of circularities in the file-compiler.
627 (reported by Marco Monteiro)
628 * bug fix: the CL pathname functions now work with files that have
629 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
630 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
631 systems with Unix98 pty semantics.
632 * bug fix: ASDF-INSTALL will now work with bsd tar.
633 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
635 * bug fix: timers expiring in dead threads no longer cause a
636 type-error (reported by Paul "Nonny Mouse").
637 * bug fix: thanks to more lightweight single-stepper instrumentation,
638 code compiled with (DEBUG 3) will compile and execute significantly faster,
639 and will have more accurate type-inferencing than before
640 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
641 whose bindings are modified
642 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
643 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
644 ** replace dummy implementations of CL:MACHINE-INSTANCE and
645 CL:SOFTWARE-VERSION with proper version
647 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
648 * feature: implemented the READER-METHOD-CLASS and
649 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
650 as specified by AMOP.
651 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
653 * optimization: faster LOGCOUNT implementation on x86 and x86-64
654 (thanks to Lutz Euler)
655 * optimization: hashing of general arrays and vectors has been
656 improved. (reported by Any Fingerhut)
657 * enhancement: SB-INTROSPECT is now able to find definitions of
658 profiled functions. (thanks to Troels Henriksen)
659 * enhancement: compiler-macro expansion applies now to FUNCALL forms
660 as well, allowing compiler-macros for SETF-functions to expand.
661 * enhancement: step-instrumentation no longer wraps known
662 single-value functions with multiple-value context, allowing
663 better type inference.
664 * fixed bug #337: use of MAKE-METHOD in method combination now works
665 even in the presence of user-defined method classes. (reported by
666 Bruno Haible and Pascal Costanza)
667 * fixed bug #339(c): if there are applicable methods not part of any
668 long-form method-combination group, call INVALID-METHOD-ERROR.
669 (reported by Bruno Haible)
670 * fixed bug #361: the :FUNCTION initarg in the protocol for
671 initialization of methods can now be used to override
672 internally-produced optimized functions. (reported by Bruno
674 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
675 system-provided lambda expression no longer cause warnings about
676 unbound #:|pv-table| symbols.
677 * bug fix: improved the handling of type declarations and the
678 detection of violations for keyword arguments with non-constant
680 * bug fix: potentially erronous calls to PATHNAME and
681 MERGE-PATHNAMES were being flushed in some cases.
682 (reported by Richard Kreuter)
683 * bug fix: compiled calls to TYPEP were mishandling obsolete
684 instances. (reported by James Bielman and Attila Lendvai)
685 * bug fix: format strings with ~> without matching ~< no longer
686 trigger an AVER, but signal an understandable error instead.
687 (reported by Antonio Martinez)
688 * bug fix: specifying an output-file without a pathname-type for
689 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
690 of input-file instead of "fasl". (reported by Robert Dodier)
691 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
692 (reported by James Y Knight).
693 * bug fix: compiler-macros-function did not consider the environment
694 argument for shadowing by local functions.
695 * bug fix: compiler-macros expansion was inhibited by local INLINE
697 * bug fix: inline expansions of known functions were subject to
698 step-instrumentation in high debug policies, leading to problems
700 * bug fix: compiler failed to differentiate between different CONS
702 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
703 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
704 * bug fix: #368: incorrect use of expressed vs. upgraded array
706 * bug fix: #306a: more precise unions of array types.
707 * thread-safety improvements:
708 ** CONDITION-WAIT could return early on Linux, if the thread was
709 interrupted and subsequently continued with SIGCONT.
710 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
712 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
713 * added support for the ucs-2 external format. (contributed by Ivan
715 * minor incompatible change: pretty printing of objects of type
716 (cons symbol) is, in the default pprint-dispatch-table, now
717 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
719 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
720 called later in a class's lifetime, possibly as late as when the
721 first instance of the class is created. Previously,
722 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
723 class became finalizeable.
724 * fixed bug: FILE-POSITION sometimes returned inconsistent results
725 for multibyte external-format streams. (thanks to "vbzoli")
726 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
727 with :ALLOCATION :CLASS inherited from superclasses of the
729 * fixed bug: anonymous classes can now be created using the :NAME
730 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
731 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
732 * fixed bug: core-files saved with :EXECUTABLE T can again be
733 executed when SBCL_HOME isn't set. (reported by James Knight)
734 * fixed bug: toplevel LOCALLY forms with declarations could
735 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
736 * fixed bug: printing from several different threads using different
737 values of *print-case* could cause invalid output, due to
738 some internal special variables of the printer not being bound
739 thread-locally (reported by Max Mikhanosha)
740 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
741 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
742 (reported by Pascal Costanza)
743 * fixed bug: FINALIZE-INHERITANCE is called from
744 REINITIALIZE-INSTANCE on classes when the class has previously
745 been finalized, as required by AMOP.
746 * minor code generation optimizations:
747 ** better register allocation in CLOS dispatching functions
748 ** overflow detection when coercing signed bytes to fixnums on x86-64
749 ** is now implemented with one IMUL instruction instead of three shifts
750 ** more efficient bit-vector access on x86 and x86-64
751 ** more efficient access to raw structure slots on x86 and x86-64
752 * fixed some bugs revealed by Paul Dietz' test suite:
753 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
756 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
757 * feature: thread support on Solaris/x86, and experimental thread support
759 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
761 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
762 default method for SLOT-UNBOUND.
763 * minor incompatible change: prevent the user from specializing the
764 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
765 somewhat counter to the intent of the protocol, I (CSR) think, and
766 additionally it just doesn't work in SBCL as currently
767 implemented, thanks to optimizations (that are always valid for
768 the other three SLOT-VALUEish functions, but not for the setter).
769 * minor incompatible change: the :SB-LDB feature is now enabled by
770 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
771 the low-level debugger.
772 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
773 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
774 down to an SB-SYS:FD-STREAM, allowing direct communication in
775 more cases. Temporary files and pipes are still used as a fallback
777 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
778 on the non-reentrant C functions localtime(3) and gmtime(3).
779 * bug fix: global optimization policy was not visible in LOCALLY and
781 * bug fix: class objects can be used as specializers in methods.
782 (reported by Pascal Costanza)
783 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
784 with a type error. (reported by blitz_ on #lisp)
785 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
786 failed with a type error. (reported by Pascal Bourguignon)
787 * bug fix: merging pathnames against defaults with :DIRECTORY
788 starting with '(:RELATIVE :BACK) should preserve the :BACK.
789 (reported by James Y Knight)
790 * bug fix: saving large (>2GB) cores on x86-64 now works
791 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
792 constant index and a (simple-array (signed-byte 32)) array
793 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
794 error (patch by Robert J. Macomber)
795 * feature: TIME now displays the amount of run-time spent in GC
796 * bug fix: The debugger now does a better job of respecting
797 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
798 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
799 workaround for bug 403.)
800 * bug fix: floating point exception handling now works on FreeBSD
801 (thanks to NIIMI Satoshi)
802 * fixed some bugs revealed by Paul Dietz' test suite:
803 ** MISC.641: LET-conversion were not supposed to work in late
805 * improvements to the Win32/x86 port:
806 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
807 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
809 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
810 * new feature: source path information is generated for macro-expansion
811 errors for use in IDE's like Slime (thanks to Helmut Eller)
812 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
813 * bug fix: compiler does not loop forever on an invalid type in
815 * improvement: compilation of most CLOS applications is significantly
817 * optimization: added a limited bytecode compiler for simple toplevel
818 forms, speeding up compilation and FASL loading
819 * bug fix: the statistical profiler now properly distinguishes anonymous
822 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
823 * minor incompatible change: in sbcl-0.9.11 (but not earlier
824 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
825 into subclasses of the finalized class. Now user calls to
826 FINALIZE-INHERITANCE finalize just the one class, and calls by the
827 system return before any subclasses are finalized.
828 * minor incompatible change: The reader no longer ignores errors
829 regarding non-existent packages in #+ and #- feature tests.
830 * new feature: command line options --no-sysinit, --no-userinit to
831 inhibit loading the corresponding init files
832 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
833 for sending data through UDP sockets (thanks to François-René Rideau)
834 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
835 error is signalled instead (thanks to François-René Rideau)
836 * minor incompatible change: Error signalling behaviour of lexical
837 operations violating package locks has changed slightly. Refer to
838 documentation on package locks for details.
839 * enhancement: EVAL can process IF-expressions without resorting to the
841 * bug fix: Some operations involving SIN, COS, or TAN weren't being
842 constant-folded properly due to missing out-of-line functions.
843 (reported by Mika Pihlajamäki)
844 * bug fix: LISTEN sometimes returned T even in cases where no data was
845 immediately available from the stream
846 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
847 were reversed. (reported by Levente Mészáros)
848 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
849 when given a vector displaced to an adjustable array. (reported
851 * bug fix: derivation of float boundaries from numbers outside the
852 appropriate float range (reported by John Wiseman)
853 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
855 * bug fix: precomputing cache entries for generic functions with
856 some subclasses of specializers as yet invalid does not attempt to
857 fill a cache line with a negative offset. (reported by Levente
859 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
860 allow condition class objects as arguments to DOCUMENTATION and
861 (SETF DOCUMENTATION); only find and set documentation for
862 structure names for the STRUCTURE doc-type. (suggested by Gary
864 * improvements to the Win32/x86 port:
865 ** (user-homedir-pathname) and default initialization file
866 locations now know about the user's "Documents and Settings"
867 directory (thanks to Yaroslav Kavenchuk)
868 ** run-program is implemented (thanks to Mike Thomas)
869 ** sockets support (thanks to Timothy Ritchey)
870 ** better backtrace support (thanks to Alastair Bridgewater)
871 ** sb-grovel supported
872 ** asdf-install and sb-posix work somewhat
873 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
874 * improvements to the Solaris/x86 port:
875 ** works on Solaris 11/Solaris Express
876 ** floating-point exception handling support
877 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
878 * fixed some bugs revealed by Paul Dietz' test suite:
879 ** REMOVE-METHOD returns its generic function argument even when
880 the method is not one of the generic functions' methods.
881 ** objects declared as MEMBER types can be admissible arguments to
883 ** printing characters should simply be printed by the FORMAT ~:C
885 ** compiler failure when compiling functions with hairy constant
886 defaults for optional parameters.
887 ** compiler produces wrong code when MAYBE-INLINE-expanding a
888 function, which is already optimized.
890 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
891 * new platform: experimental support for SBCL x86/Darwin, including
892 MacOS X 10.4.5 on Intel.
893 * new feature: Unicode character names are now known to the system
894 (through CHAR-NAME and NAME-CHAR).
895 * new feature: the filesystem location of SBCL's core file is
896 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
897 * minor incompatible change: the contrib modules SB-POSIX and
898 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
899 this change is to make it easier to distribute
900 location-independent binaries.
901 * bug fix: as implied by AMOP, standardized classes no longer have
902 slots named by external symbols of public packages. (reported by
904 * optimization: calling functions via constant symbols -- as in
905 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
906 via the function object as in (FUNCALL #'FOO).
907 * optimization: on x86 and x86-64, the calling convention for the
908 case of dealing with an unknown number of values has been altered
909 to be friendlier to the prediction heuristics implemented,
910 particularly with reference to CALL and RET pairing. (thanks to
911 Alastair Bridgewater)
912 * optimization: on x86, the code for access to thread-local symbol
913 values and binding/unbinding of thread-local symbols is smaller.
914 (thanks to Alastair Bridgewater)
915 * enhancement: CONSTANTP is now able to determine constantness of
916 more complex forms, including calls to constant-foldable standardized
917 functions and some special forms beyond QUOTE.
918 * fixed bug: occasional GC crashes on Solaris/x86
919 * optimization: x86-64 supports stack allocation of results of simple
920 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
921 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
922 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
923 (thanks to James Knight)
924 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
925 by the standard (thanks to Stephen Compall)
927 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
928 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
929 be used for bundling the runtime and the core file into one
930 executable binary. This feature is not currently supported on all SBCL
931 platforms. (thanks to James Bielman and NIIMI Satoshi)
932 * new feature: a generational or ephemeral garbage collector is now
933 the default on the PowerPC platform (both Linux and Darwin). The
934 old Cheney (stop and copy) collector is a build-time option.
935 (thanks to Cyrus Harmon, after Raymond Toy)
936 * minor incompatible change: the method by which SBCL finds its
937 contributed modules has changed; it no longer relies on symbolic
938 links from an $SBCL_HOME/systems directory, but searches directly
939 in the subdirectories of $SBCL_HOME.
940 * enhancement: the dynamic heap size on the Linux/PPC platform is
941 markedly larger, even using the older Cheney garbage collector.
942 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
943 certain complicated string types. (reported by Gary King)
944 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
945 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
946 * fixed bug: DOCUMENTATION on structures no longer signals an
947 error if no structure type of the right name exists. (reported by
949 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
950 applicable non-standard primary or :AROUND method on
951 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
952 no longer cause unbound variable errors. (reported by Kevin Reid)
953 * fixed bug: metacircle resolution in cases where methods have slots
954 added before the slots from STANDARD-METHOD. (reported by Jean
956 * fixed bug: the Power PC assembly code for calling into lisp
957 sometimes computed its return address wrongly (depending on the
958 15th bit of the address, fixed at link time). This used to
959 manifest itself in a segmentation violation while building PCL.
960 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
961 many others over the years)
962 * fixed bug: ROOM no longer reports silly numbers for stack usage if
963 the stack pointer (treated as a signed integer) is negative.
964 (thanks to Peter van Eynde)
966 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
967 * new platform: experimental support for the Windows operating
968 system has been added. (thanks to Alastair Bridgewater)
969 * fixed several bugs in and robustified the PPC FFI (including
970 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
971 * bug fix: allow non-simple string symbol names (reported by Paul
973 * bug fix: interrupt handling on NetBSD (thanks to Richard M
975 * bug fix: saving a core corrupted callbacks on x86/x86-64
976 * bug fix: closed a loophole in metacircularity detection and
977 grounding in the PCL implementation of CLOS.
978 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
979 (reported by tomppa on #lisp)
980 * bug fix: clear the direction flag on Lisp -> C transitions, as
981 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
982 (reported by Andrej Grozin and Hendrik Maryns)
983 * optimization: major improvements to GC efficiency on GENCGC platforms
984 * optimization: faster implementation of EQUAL
985 * optimization: emit more efficient opcodes for some common
986 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
987 * optimization: several other minor code-generation improvements on x86-64
988 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
990 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
991 * minor incompatible change: (SETF CLASS-NAME) and (SETF
992 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
993 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
994 by ANSI as a generic function, and for consistency (SETF
995 GENERIC-FUNCTION-NAME) is treated likewise.
996 * fixed bug #233.b: make constraint propagation notice when a variable
997 value is changed after it is referenced but before it is used
998 * fixed bug #296: no more arbitrary behaviour from filenames with
999 odd characters as --load arguments. (reported by Adam Warner)
1000 * fixed bug #390: :CHARACTER-SET pathname components now work as
1001 expected. (reported by Tim Daly Jr)
1002 * fixed bug #391: complicated :TYPE intersections in slot
1003 definitions no longer cause an error in PCL internals.
1004 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1005 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1006 returning the number of octets which would be written to the
1007 file-stream. (thanks to Robert J. Macomber)
1008 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1009 arguments to the internal stream functions. (thanks to David
1011 * bug fix: stack exhaustion is now handled on the x86/SunOS
1012 platform. (thanks to Daisuke Homma)
1013 * bug fix: more accurate ROOM results on GENCGC platforms
1014 * optimization: improved type inference for arithmetic-for
1015 index variables in LOOP
1016 * optimization: faster floating-point SQRT on x86-64
1017 * fixed some bugs revealed by Paul Dietz' test suite:
1018 ** DOCUMENTATION returns NIL instead of "" for method combinations
1019 that don't have a docstring
1021 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1022 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1023 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1024 therefore are not customizeable by user code (as seems to be at
1025 least permitted and maybe required by AMOP). As a consolation,
1026 however, the SBCL implementation of these functions now calls
1027 REINITIALIZE-INSTANCE as specified by AMOP.
1028 * bug fix: slot-definition documentation is propagated as per ANSI
1029 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1030 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1031 argument, as do eslotd initialization methods. (from Pascal
1032 Costanza's "Closer" project)
1033 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1034 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1036 * bug fix: it is now possible to have more than one subclass of
1037 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1038 (reported by Bruno Haible, Pascal Costanza and others)
1039 * bug fix: the dependent update protocol now works for generic
1040 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1041 and Pascal Costanza)
1042 * bug fix: condition-class instances corresponding to
1043 DEFINE-CONDITION forms are now created eagerly. (reported by
1044 Kalle Olavi Niemitalo on comp.lang.lisp)
1045 * bug fix: floating point printing is more accurate in some
1046 circumstances. (thanks to Simon Alexander)
1047 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1048 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1049 * bug fix: callbacks on OS X now preserve stack-alignment.
1050 (thanks to Cyrus Harmon)
1051 * enhancement: the x86-64 disassembler is much better at
1052 disassembling SSE instructions. (thanks to Lutz Euler)
1053 * enhancement: CHECK-TYPE on a variable now allows type-inference
1054 (thanks to Vincent Arkesteijn)
1055 * optimization: improved performance of EUC-JP external format.
1056 (thanks to NIIMI Satoshi)
1057 * optimization: performance improvements to IO on file streams of
1058 :ELEMENT-TYPE CHARACTER
1059 * optimization: much faster memory allocation on x86-64
1060 * optimization: faster garbage collections (latency and throughput)
1062 * optimization: faster bignum subtraction and division on x86 and x86-64
1063 (thanks to Lutz Euler)
1064 * optimization: more accurate type-inference for loops that use a
1065 floating point index variable or a negative step.
1067 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1068 * bug fix: add a workaround to SBCL looping infinitely at startup on
1069 Linux kernels with apparently buggy implementations of personality().
1070 (thanks to Svein Ove Aas)
1071 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1072 (thanks to David Lichteblau)
1073 * bug fix: local bindings shadow global symbol macros for
1074 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1075 * optimization: non-open coded uses of numeric comparison operators
1076 (e.g. >) no longer cons when called with more than one parameter
1077 on platforms supporting dynamic-extent allocation.
1078 * enhancement: saving cores with foreign code loaded is now supported
1079 on MIPS/Linux in addition to the previously supported platforms.
1080 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1081 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1082 * bug fix: division by zero in sb-sprof when no samples were collected
1083 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1084 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1085 (thanks to Alexander Kjeldaas)
1086 * new feature: ignoring the return values of destructive functions
1087 like NREVERSE signals a compile-time style-warning.
1088 (thanks to Kevin Reid)
1089 * new feature: the alignment of alien structure fields can be
1090 explicitly specified. (thanks to Cyrus Harmon)
1091 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1092 and dump core on SIGQUIT
1094 ** incompatible change: threads do not inherit values of specials
1095 from their parents (see manual)
1096 ** bug fix: threads stacks belonging to dead threads are freed by the
1097 next exiting thread, no need to gc to collect thread stacks anymore
1098 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1099 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1100 ** bug fix: dynamic variable and thread start related gc lossage
1101 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1103 * fixed some bugs revealed by Paul Dietz' test suite:
1104 ** SUBTYPEP is slightly more accurate on heinously complicated
1105 CONS types where some of the members have uncertain (in the
1106 NIL, NIL sense) type relationships to each other.
1108 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1109 no longer purified unless :PURIFY T is explicitly specified.
1110 ** Non-purified cores are significantly smaller than before
1112 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1113 * new feature: timers based on Zach Beane's excellent timer package
1114 * added support for the following external formats: koi8-u,
1115 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1116 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1117 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1118 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1119 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1120 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1121 * incompatible change: a threaded SBCL will no longer revert to
1122 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1123 * bug fix: interrupts are disabled until startup is complete; no
1124 more sigsegvs when receiving a signal to soon
1125 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1127 * bug fix: add a workaround for the memory randomization features in
1128 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1129 workaround will only be in effect on systems with the proc filesystem
1131 * bug fix: printing objects of type HASH-TABLE signals a
1132 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1134 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1135 have been running for over 50 days. (reported by Gilbert Baumann)
1136 * bug fix: the logic for getting names of functions gets less
1137 confused when confronded with alternate-metaclass
1138 funcallable-instances. (reported by Cyrus Harmon)
1139 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1140 consistent, even on internal alternate-metaclass objects.
1141 * bug fix: flush closure information collected by physical
1142 environment analysis prepass before the main pass. (bug reported
1144 * bug fix: compiler pack phase does not modify a hashtable, which is
1145 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1146 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1147 may be expanded. (reported by Alexander <malishev> on c.l.l)
1148 * bug fix: no more style-warnings when compiling code using LAST
1149 under high-SPEED low-SPACE settings. (reported by David Wallin
1151 * fixed some incompatibilities between SBCL's MOP and the MOP
1153 ** the METAOBJECT class is now implemented;
1154 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1155 STANDARD-OBJECT, as required;
1156 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1157 now compatible (as required by VALIDATE-SUPERCLASS); there
1158 remains a consistency requirement over the presence or absence
1159 of the FUNCTION class in the superclass list of finalized
1160 classes; see the manual for more details;
1161 ** the :AROUND method for COMPUTE-SLOTS on
1162 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1163 requested slot ordering.
1165 ** bug fix: parent thread now can be gc'ed even with a live
1167 ** bug fix: binding a special with PROGV to no value is not
1168 the same as that symbol not having been bound (thanks to
1170 ** bug fix: binding specials is thread safe (thanks to
1172 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1173 and SB-SPROF do not die with 'no handler for signal XX in
1174 interrupt_handle_now(..)' anymore
1175 ** bug fix: WITH-TIMEOUT works with multiple running threads
1176 * fixed some bugs revealed by Paul Dietz' test suite:
1177 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1178 the :method-class keyword argument.
1180 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1181 * new port: the Solaris operating system on x86 processors is now
1182 mostly supported, though some rough edges in the environment
1183 remain. (thanks to Daisuke Homma)
1184 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1185 space for its heap. (thanks to Thiemo Seufer)
1186 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1187 closures. (thanks to Thiemo Seufer)
1188 * minor incompatible change: eof selects abort in the debugger.
1189 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1190 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1192 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1193 deprecated, and will go away in a future revision of SBCL.
1194 * minor incompatible change: GC-ON and GC-OFF are no longer
1195 implemented with a counter, it does not matter how many times gc
1196 is switched on or off
1197 * bug fix: discriminating functions for generic function classes
1198 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1199 make invalid assumptions about method precedence order. (reported
1201 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1202 platforms. (thanks to Thiemo Seufer)
1203 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1204 * bug fix: correct pathname printing with printer escaping is on.
1205 (thanks to Kevin Reid)
1206 * bug fix: complex VOP definitions in "user-space" no longer trigger
1207 package locks. (reported by Zach Beane)
1208 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1209 for funcallable-instance functions, and is no different from
1211 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1212 characters in the current readtable. (reported by Nicholas Neuss)
1213 * bug fix: SUBTYPEP on various CONS types returns more a more
1214 accurate acknowledgment of its certainty.
1215 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1216 lists in some cases. This partially fixes bug 384.
1217 * flush all standard streams before prompting in the REPL and the
1219 * bug fix: signal handling and triggering gc do not conflict
1220 directly anymore, in particular a high frequency sb-sprof does
1221 not prevent gc from running
1222 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1223 approximation for timezone and DST information between the
1224 universal time epoch and the smallest negative 32-bit time_t.
1225 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1226 year 1899 so long as the encoded time is non-negative.
1227 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1228 the correct answer for non-constant rotate amounts when performing
1229 an inline 32-bit rotation.
1231 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1232 there is only one thread in the session
1233 ** bug fix: memory leak for streams created in one thread and
1234 written to in another
1235 ** bug fix: lockup when compiled with gcc4
1236 ** bug fix: race that allows the gc to be triggered when gc is
1238 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1239 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1241 ** bug fix: finished threads are gc'ed properly
1242 * fixed some bugs revealed by Paul Dietz' test suite:
1243 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1244 has arguments with a different set of applicable methods from
1245 the orignal arguments.
1246 ** The type error thrown by MAP now has a correct expected-type
1248 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1249 name a compiled function.
1250 ** Three MISC tests where a large bignum was improperly coerced to
1251 a float that couldn't represent that bignum during type
1252 derivation were fixed.
1253 ** SUBTYPEP can now handle types involving the negation of a
1254 list-form FUNCTION type.
1255 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1256 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1257 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1259 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1260 * New feature: Experimental support for bivalent streams: streams
1261 opened with :element-type :default now allow character and binary
1262 (unsigned-byte 8) I/O
1263 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1264 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1266 * bug fix: no more highly sporadic "couldn't check whether ~S is
1267 readable" when reading a stream and an interrupt hits in the middle
1268 of a select system call
1269 * compiler better recognizes complex arrays (reported by Eduardo
1271 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1272 for variables on SBCL built with linkage-tables. (reported by Luis
1274 * various error reporting improvements.
1275 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1276 (Thanks to Thiemo Seufer)
1277 * bug fix: nested reader invokations work correctly
1278 * bug fix: it is possible to have simultaneous references to foreign
1279 code and foreign data with the same name.
1281 ** added x86-64 support
1282 ** incompatible change: the threading api now works with thread
1283 objects instead of thread ids
1284 ** bug fix: threads are protected from signals and interruption when
1285 starting up or going down
1286 ** bug fix: a race where an exiting thread could lose its stack to gc
1287 ** bug fix: don't halt on infinite error in threads if possible
1288 ** fixed numerous gc deadlocks introduced in the pthread merge
1289 ** bug fix: fixed thread safety issues in read and print
1290 ** bug fix: debugger doesn't hang on session lock if interrupted at
1291 an inappropriate moment
1292 ** bug fix: run-program is now thread safe(r)
1293 ** bug fix: inner with-recursive-lock no longer releases the mutex
1294 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1295 * fixed some bugs revealed by Paul Dietz' test suite:
1296 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1297 EXPECTED-TYPE slots filled.
1298 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1300 ** MAKE-CONDITION accepts classes as type-designators.
1301 ** COMPILE may never return NIL.
1302 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1303 range before calling Unix time functions
1305 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1306 * numerous signal handling fixes to increase stability
1307 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1308 * minor incompatible change: we now correctly canonize default
1309 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1310 as per the MOP, rather than the historical (INITARG INITFUNCTION
1311 INITFORM). (reported by Bruno Haible)
1312 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1313 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1314 for more information.
1315 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1316 pathname is a directory pathname.
1317 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1318 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1320 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1321 :METACLASS argument in addition to a class name. (reported by
1322 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1323 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1324 (reported by Bruno Haible; patch from Gerd Moellmann)
1325 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1327 * bug fix: more cleanups to the floating point exception handling on
1328 x86-64 (thanks to James Knight)
1329 * bug fix: the compiler does not try to constant fold calls of
1330 COERCE and BIT-* functions when they return freshly constructed
1331 objects. (reported by Nikodemus Siivola and Paul Dietz)
1332 * optimization: improved the MIPS versions of generic (in the
1333 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1334 * optimization: direct conversion of (unsigned-byte 32) to floats on
1335 the PowerPC platform.
1336 * optimization: structure instances with raw slots now use less
1337 memory, and probably show better memory locality. (thanks to
1339 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1340 are treated as requests for stack allocation on the x86-64,
1341 Alpha-32, PPC and SPARC platforms.
1342 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1343 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1344 (thanks to Tony Martinez)
1346 ** gcing a dead thread can no longer lead to lockups
1347 ** threads block signals until they are set up properly
1348 ** errno is no longer shared by threads
1349 ** interrupt-thread restores the eflags register on x86
1350 ** fixed some lockups due to gc/thread interaction
1351 * fixed some bugs revealed by Paul Dietz' test suite:
1352 ** invalid dotted lists no longer raise a read error when
1353 *READ-SUPPRESS* is T
1354 ** signal an error if a symbol that names a declaration is used
1355 as the name of a type, or vice versa
1356 ** allow using the (declare (typespec var*)) abbreviation for
1357 (declare (type typespec var*)) with all type specifiers
1358 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1359 ** always return NIL from PPRINT-POP when OBJECT is NIL
1360 ** don't signal errors when pretty-printing malformed LABELS,
1361 FLET or MACROLET forms
1362 ** declarations in a DOLIST body are also in scope for the
1364 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1366 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1369 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1370 * fixed cross-compiler leakages that prevented building a 32-bit
1371 target with a 64-bit host compiler.
1372 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1373 opened with :IF-EXISTS :OVERWRITE.
1374 * fixed bug 281: error for an invalid qualifier in a short-form method
1375 combination method is not signalled until the faulty method is called.
1376 * bug fix: iteration variable type inferrer failed to deal with open
1377 intervals. (reported by Alan Shields)
1378 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1379 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1380 or more runtime options were provided to the sbcl binary.
1381 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1382 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1383 * optimization: there's now a fast-path for fixnum arguments in the
1384 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1385 * optimization: the code generated on x86-64 is more compact thanks
1386 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1387 * bug fix: floating-point exception handling now partly works on
1388 x86-64. (Thanks to James Knight)
1389 * improvement to the MIPS backend from Thiemo Seufer: C-style
1390 64-bit long long arguments and return values to alien functions
1392 * fixed some bugs revealed by Paul Dietz' test suite:
1393 ** the type-error signalled from WARN has a filled-in DATUM slot.
1394 ** the type-error required when a stream is not associated with
1395 a file has the stream as its datum.
1396 ** type-errors on single-floats on x86-64 no longer have
1397 :INVALID-OBJECT as the datum
1398 ** the type-errors signalled for invalid function names now have
1399 a correct expected type
1400 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1401 for structures defined with a :TYPE. Documentation strings for
1402 typed structures are no longer immediately discarded
1403 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1404 broadcast streams and synonym streams. FILE-LENGTH now also works
1405 on broadcast streams.
1407 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1408 * incompatible change: the --noprogrammer option, deprecated since
1409 version 0.7.5, has been removed. Please use the equivalent
1410 --disable-debugger option instead.
1411 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1413 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1414 inoperational for a while now) has been completely removed.
1415 * null lexical environments are now printed as #<NULL-LEXENV>,
1416 significantly reducing the amount of clutter in typical backtraces.
1417 * documentation on weak pointers, finalization, and after GC hooks
1418 has been added to the manual.
1419 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1420 as other specialized array types, is much faster. SUBSEQ and
1421 COPY-SEQ on such arrays have also been sped up.
1422 * optimization: EQL is now more efficient when at least other argument
1423 is known to be of type (OR FIXNUM (NOT NUMBER)).
1424 * fixed bug: the runtime is now less vulnerable to changes in the
1425 size of the SBCL object on OS X, and virtual memory is reserved for
1426 all spaces that need to be at a fixed address.
1427 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1428 * fixed bug: finalizers and after GC hooks that cause consing are now
1430 * fixed bug: compiler error messages and summaries are now printed to
1431 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1432 * fixed inference of the upper bound of an iteration variable.
1433 (reported by Rajat Datta).
1434 * fixed bug 211e: calling local functions with duplicated constant
1435 keyword argument no longer causes a bogus style warning about an
1437 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1438 ftype declaration to be disregarded. (reported by Dave Roberts)
1439 * fixed bug 373: caused by erronous compilation of references to alien
1440 variables in the runtime on ppc/darwin.
1441 * fixed bug 376: CONJUGATE type deriver.
1442 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1443 (reported by Baughn on #lisp)
1444 * a cross-compiler bug on non-x86 platforms has been identified and
1445 fixed. (thanks to Bruno Haible)
1446 * improvements to the MIPS runtime code for increased stability.
1447 (thanks to Thiemo Seufer)
1448 * increased the maximimum compact environment size to allow
1449 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1450 * partial workaround for bug 135: don't name the function we're
1451 calling for hairy cases of EVAL, so as not to accumulate one environment
1452 entry per call to EVAL. (reported by Kevin Reid)
1453 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1454 * optimization: type testing for non-vector arrays should be faster.
1455 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1457 * bug fix: setting 31st element of a bit vector to zero did not work
1459 * bug fix: redefining a class definition which failed due to a
1460 previous accessor / function clash now works (but see BUGS entry
1461 #380 for more problems in this area). (thanks to Zach Beane)
1462 * the long form of DEFINE-METHOD-COMBINATION disables method group
1463 checking when given a single method group with pattern *. (thanks
1465 * on x86 compiler supports stack allocation of results of simple
1466 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1467 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1468 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1469 * fixed some bugs related to Unicode integration:
1470 ** the restarts for recovering from input and output encoding
1471 errors only appear when there is in fact such an error to
1473 * fixed some bugs revealed by Paul Dietz' test suite:
1474 ** MISC.549 and similar: late transformation of unsafe type
1475 assertions into derived types caused unexpected code
1477 ** SCALE-FLOAT type deriver is less wrong.
1478 ** type derivers for EXP, LOG and similar functions compute result
1479 types for complex arguments better.
1480 ** (MISC.563) CONJUGATE type deriver works for very restricted
1482 ** out-of-line type testers for character strings are available.
1483 ** EQUAL compiler transform understands specialness of objects
1485 ** accessing double-floats stored on the stack now works on x86-64.
1486 ** debugger internals could sometimes create invalid lispobjs,
1487 resulting in GC crashes.
1488 ** MISC.548: type check weakening can convert required type into
1490 ** initialization forms for bindings are not in scope of free special
1493 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1494 * incompatible change: thread support for non-NPTL systems has
1495 been removed - locking is buggy and unreliable. A threaded
1496 SBCL build will now warn at startup and refuse to create
1497 new threads, unless futex support is detected in the kernel
1498 * incompatible change: the top level REPL now has only an ABORT
1499 restart associated with it, not TOPLEVEL and ABORT as it used to.
1500 TOP and TOPLEVEL are now available as debugger commands for
1501 returning to the top level.
1502 * incompatible change: forms evaluated in the REPL now use the
1503 global optimization policy.
1504 * incompatible change: user- and system-initialization files are
1505 no longer processed with LOAD, but by READ and EVAL; hence the
1506 global optimization policy, startup package, readtable, etc,
1508 * The .fasl file format number has been incremented because of
1509 various incompatible changes.
1510 * internal entry point details and argument counts no longer appear
1511 in backtraces unless explicitly requested by setting
1512 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1513 * built-in and standard functions no longer have names like "top
1514 level local call to FOO".
1515 * fixed bug 32: functions defined in non-null lexical environments
1516 now have more legible printed representation
1517 * fixed bug 33: functions defined in non-null lexical environemnts
1518 are now more amenable to inspection by INSPECT.
1519 * workaround for bug 354: XEPs no longer appear in backtraces unless
1520 explicitly requested.
1521 * fixed bug: receiving the signal which results from attempting to
1522 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1523 SIGBUS on other *BSDs) on architectures where the C stack is also
1524 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1525 to debugger confusion or wild instability. (reported by Cheuksan
1527 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1528 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1529 (reported by Lutz Euler)
1530 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1531 compiled code. (reported by Paul Dietz)
1532 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1533 specialized parameter to a method to something that is not TYPEP
1534 the specializer is now possible.
1535 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1536 face of package deletion.
1537 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1538 pathname. (reported by David Tolpin on c.l.l)
1539 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1540 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1541 STRING-STREAM and FILE-STREAM, respectively.
1542 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1543 than previously; in addition, its test suite is now run on build.
1544 (thanks to Luke Gorrie)
1545 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1546 * optimization: added a immediate representation for single-floats
1548 * fixed some bugs revealed by Paul Dietz' test suite:
1549 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1550 ** attempting to create a package with a colliding nickname causes
1551 correctable errors to be signalled.
1552 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1553 ** several x86-64 backend bugs related to sign-extension of immediate
1556 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1557 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1558 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1560 * fixed loading of multiply forward-referenced layouts.
1561 (thanks to Cheuksan Wang)
1562 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1563 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1564 (see COMPILE-FILE documentation for details of :PRINT option)
1565 * fixed bugs 19 and 317: fixed-format floating point printing is
1566 more accurate. This also fixes a bug reported by Adam Warner
1567 related to the ~@F format directive.
1568 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1570 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1571 dispatch table if the from-char is a dispatch macro character.
1572 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1573 by the wordsize no longer ignore the last word. (reported by Lutz
1575 * fixed bug in type checking of dynamic-extent variables. (reported
1577 * optimization: sequence traversal functions use their freedom to
1578 coerce function designators to functions.
1579 * optimization: code with many calls to CLOS methods specialized on
1580 CLOS classes has had redundant type checks removed.
1581 * optimization: added declarations to speed up operations that access
1582 the internal character database (for example STRING-UPCASE)
1583 * optimization: comparison operations between floats and sufficiently small
1584 fixnums no longer create extra rationals
1585 * fixed some bugs related to Unicode integration:
1586 ** portions of multibyte characters at the end of buffers for
1587 character-based file input are correctly transferred to the
1588 start of the buffer at the next read.
1589 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1590 passing it through to OPEN.
1591 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1592 argument given to internal calls to OPEN.
1593 ** the built-in comment readers (introduced by character sequences
1594 ";" and "#|") are more forgiving to encoding errors; they will
1595 STYLE-WARN and then attempt to resync the stream at a character
1596 boundary. (thanks to Teemu Kalvas)
1597 * fixed some bugs in the x86-64 port:
1598 ** Negative short int return values from c-calls are sign-extended
1600 ** The stack is aligned to 16-bytes for c-calls, as required by
1601 the ABI. (thanks to Cheuksan Wang)
1602 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1603 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1604 for enums. (thanks to Vincent Arkesteijn)
1605 ** Multiple small optimizations and bugfixes for floating point
1607 * fixed some bugs revealed by Paul Dietz' test suite:
1608 ** Space, Tab, Linefeed, Return and Page have the invalid
1609 secondary constituent character trait.
1610 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1612 ** WITH-INPUT-FROM-STRING should only update the index place on
1614 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1615 works more reliably.
1616 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1617 with one-dimensional arrays with fill pointers.
1618 ** TYPE-OF failed on a complex with an integer realpart and a
1620 ** compiler failure during type inference for the code of form
1621 (IF (EQL X (THE ...)) ...) (MISC.535).
1623 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1624 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1625 platform. The port supports 61-bit fixnums, large memory spaces
1626 and reloading shared object files.
1627 * enhancement: saving cores with foreign code loaded is now
1628 supported on ppc/Darwin in addition to the previously supported
1630 * enhancement: the statistical profiler now walks deeper into the
1631 call stack for more meaningful call-graphs and accrued time
1632 reports (x86/x86-64 only). It also now reports time spent in
1634 * enhancement: it is now possible to trace most individual methods
1635 of a generic function in addition to tracing the generic function
1637 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1639 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1640 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1641 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1642 produces an error. (thanks to Vincent Arkesteijn)
1643 * bug fix: NAMESTRING on pathnames with :WILD components in their
1644 directories works correctly. (thanks to Artem V. Andreev)
1645 * fixed bug 125: compiler preserves identity of closures. (reported
1647 * bug fixed: functions with &REST arguments sometimes failed with
1648 "Undefined function" when compiled with (DEBUG 3). (reported by
1650 * bug fix: overflow during compiling of setting element of a bit
1651 vector with constant index and value. (reported by Timmy Douglas)
1652 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1653 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1654 * on x86 compiler partially supports stack allocation of dynamic-extent
1656 * GO and RETURN-FROM do not check the extent of their exit points
1657 when compiled with SAFETY 0.
1658 * fixed some bugs related to Unicode integration:
1659 ** encoding and decoding errors are now much more robustly
1660 handled; it should now be possible to recover even from invalid
1661 input or output to the terminal. (thanks to Teemu Kalvas)
1662 ** provided a first cut at implementing STRING-TO-OCTETS and
1663 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1664 ** altered the SB-MD5 contributed module slightly, changing the
1665 interface just enough for it to be supportable for builds where
1666 lisp characters are not eight bits.
1667 * fixed some bugs revealed by Paul Dietz' test suite:
1668 ** the FORMATTER-generated functions for ~V[ conditionals require
1669 the correct number of arguments.
1670 ** READ-FROM-STRING returns the mandated second value when applied
1671 to displaced strings.
1672 ** the #\Rubout and #\Backspace characters are treated as invalid
1673 constituent characters by the tokenizer.
1675 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1676 * new feature: reloading changed shared object files with
1677 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1678 * new feature: references to foreign variables and functions
1679 can now be compiled and loaded before the corresponding shared
1680 object file is loaded, as long as the foreign definitions are
1681 available at runtime.
1682 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1683 supported. (thanks to Dan Debertin)
1684 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1685 just keywords. (thanks to Vincent Arkesteijn)
1686 * fixed bug #331: structure-class instances corresponding to
1687 DEFSTRUCT forms are now created eagerly.
1688 * fixed bug #345: backtraces from calls to undefined functions work
1689 on x86 as well. Related bug #61 is now also partially fixed on x86
1690 (backtraces from throws to unknown catch tags.)
1691 * bug fix: lambda-list parsing is now stricter vrt. order and number
1692 of lambda-list keywords.
1693 * bug fix: as specified by AMOP, an error is signalled if a
1694 class-option appears multiple times in a DEFCLASS form. (reported
1696 * bug fix: RANDOM can be compiled when the compiler derives the type
1697 of its numeric argument as a disjoint set of small integers.
1698 (reported by Paul Dietz)
1699 * bug fix: starting a core saved with shared objects loaded when
1700 those objects are not available no longer causes threaded SBCL to
1701 hang. (reported by Sean Ross)
1702 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1704 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1705 argument, which must always be NIL. (reported by Kalle Niemitalo)
1706 * bug fix: printing 1.0d+23 no longer results in an error.
1707 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1708 * bug fix: structure slot setters preserve evaluation order. (thanks
1710 * fixed some bugs related to Unicode integration:
1711 ** RUN-PROGRAM can allow its child to take input from a Lisp
1712 stream. (reported by Stefan Scholl)
1713 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1714 locales. (reported by Ken Causey)
1715 * fixed some bugs revealed by Paul Dietz' test suite:
1716 ** INCF, DECF and REMF evaluate their place form as specified in
1718 ** FORMATTER expands ~{ ~} iteration directives with V or #
1719 parameters correctly.
1720 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1721 consequent uses no arguments correctly.
1722 ** the system has a partial understanding of the (COMPLEX RATIO)
1724 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1727 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1728 * new feature: a build-time option (controlled by the :SB-UNICODE
1729 keyword feature, enabled by default) for building the system with
1730 support for the entire 21-bit character space defined by the
1732 * new feature: the system now has rudimentary external-format
1733 support; the primary user-visible change at this time is that
1734 characters with the high bit set (such as lower-case-e-acute) will
1735 print correctly to a terminal in a UTF-8 environment.
1736 * minor incompatible change: BASE-CHAR no longer names a class;
1737 however, CHARACTER continues to do so, as required by ANSI.
1738 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1739 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1740 has been moved to the SB-EXT package (temporarily re-exported from
1742 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1743 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1745 * fixed bug #351: better error-handlind and reporting for malformed
1747 * fixed bug #350: bignum-printing is now more memory-efficient,
1748 allowing printing of very large bignums, eg. (expt 2 10000000).
1749 (reported by Bruno Haible)
1750 * fixed bug #302: better primitive-type selection for intersection
1752 * fixed bug #308: non-graphic characters now all have names, as
1753 required. (reported by Bruno Haible)
1754 * bug fix: redefining a class with different superclasses now correctly
1755 removes it from the direct-subclasses of its previous superclasses.
1756 (reported by David Morse)
1757 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1758 new value now works. (reported by Bruno Haible)
1759 * bug fix: correct canonicalization of multiple non-standard slot
1760 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1761 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1762 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1763 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1764 now exists, an signals an error.
1765 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1766 during macroexpansion for non-iteration variables as well. (reported
1767 by Bruno Haible for CMUCL)
1768 * bug fix: Cyclic structures and unprintable objects in compiler
1769 messages no longer cause errors. (reported by Bruno Haible)
1770 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1771 and READ-FROM-STRING all now return a primary value of NIL if
1772 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1773 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1774 (reported by Bruno Haible for CMUCL)
1775 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1776 do not designate a condition. (reported by Bruno Haible for
1778 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1779 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1780 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1781 permitting resolution in favour of any of the conflicting symbols.
1782 (reported by Bruno Haible for CMUCL)
1783 * bug fix: EQUAL compiler optimizations is less aggressive on
1784 strings which can potentially compare true despite having distinct
1785 specialized array element types.
1786 * bug fix: unit enumerations can be defined without dividing by
1787 zero. (thanks to Vincent Arkesteijn)
1788 * FORMAT compile-time argument count checking has been enhanced.
1789 (report from Bruno Haible for CMUCL)
1790 * a partial workaround for the bug 262: the compiler does not try to
1791 inline-expand a local function doing RETURN-FROM from a deleted
1792 BLOCK. (thanks to Peter Denno for the bug report and to David
1793 Wragg for the simple test case)
1794 * fixed some bugs revealed by Paul Dietz' test suite:
1795 ** RENAME-PACKAGE allows all package designators as new package
1797 ** constraint propagation and lambda variable substitution are
1798 more cautious in dealing with partially deleted code.
1799 ** compiler sometimes lost reoptimization passes.
1800 ** CERROR, given a condition as condition designator, passes its
1801 remaining arguments to the continue format control without
1803 ** Case-altering FORMAT directives work correctly on non-ASCII
1805 ** The REAL type specifier handles bounds outside the floating
1806 point ranges without signalling FLOATING-POINT-OVERFLOW.
1807 ** Functions with IR1-transformations can create intercomponent
1808 references to global functions.
1809 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1811 ** FORMAT ~R treats a nil value for its first parameter correctly.
1813 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1814 * enhancement: saving cores with foreign code loaded is now
1815 supported on x86/NetBSD and sparc/Linux in addition to the previously
1816 supported platforms.
1817 * bug fix: on some platforms repeated installations caused multiple
1818 copies of HTML documentation to be installed -- should not happen
1819 any more. (reported by Stefan Scholl)
1820 * bug fix: parsing self-recursive alien record types multiple times
1821 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1822 original patch by Helmut Eller for CMUCL)
1823 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1824 (thanks to Richard Kreuter)
1825 * bug fix: defining classes whose accessors are methods on existing
1826 generic functions in other (locked) packages no longer signals
1827 bogus package lock violations. (reported by François-René Rideau)
1828 * bug fix: special variables as DEFMETHOD parameters no longer have
1829 associated bogus type declarations. (reported by David Wragg and
1831 * bug fix: read-write consistency on streams of element-type
1832 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1833 * bug fix: redefiniton of the only method of a generic function with
1834 no DEFGENERIC no longer emits a full WARNING. In addition,
1835 redefinition of generic functions with no DEFGENERIC to an
1836 incompatible lambda list now signals an error. (thanks to Zach
1838 * bug fix: DEFGENERIC now works even when there's a function of the
1839 same name in an enclosing lexical environment. (thanks to Zach
1841 * fixed compiler failure, caused by instrumenting code during
1842 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1843 * optimization: added loop analysis and improved register allocation
1844 * fixed some bugs revealed by Paul Dietz' test suite:
1845 ** POSITION on displaced vectors with non-zero displacement
1846 returns the right answer.
1847 ** (SIMPLE-STRING) is a valid type specifier for sequence
1849 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1851 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1852 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1854 ** The justification version of the FORMAT ~< directive treats
1855 non-zero minpad parameter correctly.
1857 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1858 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1859 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1860 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1861 the supported interface.
1862 * new feature: Single-stepping of code compiled with DEBUG 2 or
1863 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1864 * new feature: saving cores with foreign code loaded is now
1865 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1866 Timothy Moore's work for CMUCL)
1867 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1868 parameters to * instead of NIL if no initform is supplied.
1869 (reported by Johan Bockgaard)
1870 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1871 correctly when FUNCALL appears as the car of the form. Note:
1872 despite this FUNCALL forms are not currently subject to
1873 compiler-macro expansion. (port of Raymond Toy's fix for the
1874 same from CMUCL, reported by Johan Bockgaard)
1875 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1876 (thanks for Teemu Kalvas)
1877 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1878 case instead of terminating the iteration (thanks for Julian
1879 Squires, Sean Champ and Raymond Toy)
1880 * bug fix: incorrect expansion of defgeneric that caused a style
1881 warning. (thanks for Zach Beane)
1882 * bug fix: slot accessor effective method computation works properly
1883 for classes with multiple non-standard applicable methods on
1884 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1885 * on x86 compiler supports stack allocation of results of LIST and
1886 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1887 CMUCL implementation by Gerd Moellmann)
1888 * fixed some bugs revealed by Paul Dietz' test suite:
1889 ** FORMAT strings with both the ~<~:;~> form of the justification
1890 directive and pretty-printing directives cause an error.
1892 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1893 * incompatible change: the internal functions
1894 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1895 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1896 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1897 instead of the old functions.
1898 * new feature: on platforms where "dladdr" is available foreign
1899 function names now appear in backtraces. (based on Helmut Eller's
1901 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1902 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1904 * documentation: ASDF manual is now distributed with SBCL.
1905 * bug fix: SBCL can now load its contributed modules with REQUIRE
1906 even if the system-provided entries have been removed from
1907 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1909 * bug fix: backtraces involving undefined functions or assembly
1910 routines are more informative. (thanks to Brian Downing)
1911 * bug fix: mutually referent alien structures now work correctly.
1912 (reported by Rick Taube)
1913 * bug fix: structures defined by WITH-ALIEN can be referred to
1914 within other definitions in the same WITH-ALIEN.
1915 * bug fix: division operators (MOD, TRUNCATE and the like) with
1916 constant zero divisors and integer dividends no longer generate
1918 * bug fix: provide default methods for INPUT-STREAM-P and
1919 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1920 * bug fix: improve the detection and resolution of MOP metacycles
1921 (where effective method computation depends on the generic function
1922 having its effective method computed). (reported by Bruno Haible)
1923 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1924 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1925 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1926 * bug fix: pathnames with relative directory components can be
1927 represented relative to default pathnames.
1928 * optimization: in taking the GCD of bignums, reduce the two bignums
1929 to approximately the same size (using Euclid's algorithm) before
1930 applying the more sophisticated binary GCD. (thanks to Juho
1932 * optimization: COUNT on bitvectors now operates word-at-a-time.
1933 * optimization: ASH with a positive, but not necessarily constant,
1934 (leftwards) shift, when in a modular context, is compiled to a
1936 * fixed some bugs revealed by Paul Dietz' test suite:
1937 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1938 if the corresponding argument is NIL.
1939 ** FORMAT directives accepting a minpad parameter treat negative
1941 ** literal commas as character parameters to FORMAT directives are
1943 ** literal spaces directly after ~<Newline> directives within a
1944 format-logical-block (~:< ~@:>) do not induce :FILL-style
1945 conditional newlines.
1946 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1947 as specified: it no longer includes conditional newlines).
1948 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1950 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1951 :PER-LINE-PREFIX argument does not evaluate to a string.
1953 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1954 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1955 the manual for details; for now, package locks can be disabled by
1956 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1957 if no major problems are found then it is likely that they will be
1958 compiled in unconditionally.
1959 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1960 unsupported operators on all platforms. To load a shared library
1961 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1962 object file, link it into a shared library outside of SBCL and
1963 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1965 * bug workaround: ROOM T and the GC were not working together
1966 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1967 reporting facility aren't preserved. That reporting has been
1968 disabled, so now until and unless someone figures out how to make it
1969 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1970 * minor incompatible change: as threatened around sbcl-0.8.0, the
1971 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1972 The symbols are also exported from SB-PCL for backwards
1973 compatibility, but more so than before SB-PCL should be treated as
1974 an implementation-internal package.
1975 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1977 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1978 It is known as of this release not to work on the Alpha, however.
1979 * fixed bug #167: errors signalled due to illegal syntax in method
1980 bodies are now more legible.
1981 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1982 designators and can hence be used with TYPEP.
1983 * fixed bug #333: CHECK-TYPE now ensures that the type error
1984 signalled, if any, has the right object to be accessed by
1985 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1986 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1987 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1989 * fixed bug #334: programmatic addition of slots using specialized
1990 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1991 and :ALLOCATION :CLASS slots.
1992 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1993 float exponents. (rereported by Peter Seibel)
1994 * fixed a bug: #\Space (and other whitespace characters) are no
1995 longer considered to be macro characters in standard syntax by
1996 GET-MACRO-CHARACTER.
1997 * fixed bug: initialization of condition class metaobjects no longer
1998 causes an instance of the condition to be created. (reported by
2000 * fixed bug: it is now possible to have slots such that
2001 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2002 description is neither :INSTANCE nor :CLASS.
2003 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2004 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2005 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2006 non-standard SLOT-DEFINITION-ALLOCATION values.
2007 * fixed bugs: various race conditions handling exiting threads.
2008 CL-PPCRE's thread torture test now passes.
2009 * fixed arguably-a-bug: GC time proportional to number of threads in
2010 system even when most of them are idle
2011 * optimization: improved performance of BIT and SBIT on bit-vectors.
2012 * .fasl file incompatibility: The fasl file version number has
2013 been incremented because of changes associated with package locks.
2015 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2016 * minor incompatible change: the system no longer provides
2017 optimization hints (conditions which are TYPEP
2018 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2019 mode; these hints are still emitted when higher SPEED optimization
2021 * new contrib module: a sampling profiler (profiling by statistical
2022 sampling, rather than by instrumenting functions) is available as
2023 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2024 * the behaviour of the standard function ED is now customizeable by
2025 third parties through a hook variable: see ED's documentation
2026 string for information on the protocol.
2027 * the compiler no longer emits efficiency notes for (FUNCALL X)
2028 when the type of X is uncertain under default optimization
2030 * fixed bug 276: mutating a binding of a specialized parameter to a
2031 method to something that is not TYPEP the specializer is now
2033 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2034 exhibit the required behaviour on the x86 platform. (thanks to
2035 Peter van Eynde, Eric Marsden and Bruno Haible)
2036 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2037 even for difficult arguments. (reported by Peter Graves)
2038 * fixed bug 141a: the backquote printer now descends quoted
2040 * fixed another bug in backquote printing: no more destructive
2041 modification of the form's list structure. (reported by Brian
2043 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2044 move between its address being taken and the call to
2045 interrupt_thread, fixing a crashing race condition.
2046 * the SB-POSIX contrib implementation has been adjusted so that it
2047 no longer exhibits ridiculously poor performance when constructing
2048 instances corresponding to C structs.
2050 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2051 * minor incompatible change: the sb-grovel contrib now treats C
2052 structures as alien (in the sense of SB-ALIEN) objects rather than
2053 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2054 has implications for memory management of client code
2055 (sb-grovel-returned objects must now be manually managed) and for
2056 type safety (alien objects now have full types).
2057 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2058 used to control emission of compiler diagnostics, rather than the
2059 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2060 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2061 quality should be considered deprecated.
2062 * install.sh now installs the user manual as well
2063 * (not quite a new documentable feature, but worth considering in
2064 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2065 beginnings of a semantically meaningful condition hierarchy is
2066 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2068 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2069 designator as the defaults argument.
2070 * fixed bug: Displaced arrays whose displaced-to array has become
2071 too small now cause ARRAY-DIMENSION to signal an error, providing
2072 for safer bounds-checking. (reported by Bruno Haible)
2073 * fixed bug: DEFCLASS slot definitions with identical :READER and
2074 :WRITER names now signal a reasonable error. (reported by Thomas
2076 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2078 * fixed bug: Invalid slot specification errors now print correctly.
2079 (thanks to Zach Beane)
2080 * fixed bug 320: Shared to local slot value transfers in class
2081 redefinitions now happen corrently from superclasses as
2082 well. (reported by Bruno Haible)
2083 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2085 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2086 improper lists correctly. (reported by Bruno Haible)
2087 * fixed bug 313: source-transform for <fun-name> was erroneously
2088 applied to a call of a value of a variable with name <fun-name>.
2089 (reported by Antonio Menezes Leitao)
2090 * fixed bug 307: The obsolete instance protocol ensures that
2091 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2092 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2093 remove dead unknown-values globs from the middle of the stack.
2094 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2095 easier to resume long computations after using *BREAK-ON-SIGNALS*
2096 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2097 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2098 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2099 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2100 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2101 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2103 * fixed a (fairly theoretical) bug in string printing: if
2104 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2105 does not have array-element-type equal to the most general string
2107 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2108 function name. (thanks to Nikodemus Siivola)
2109 * fixed bug: compile-time format string checker failed on
2110 non-closed ~{. (reported by Thomas F Burdick)
2111 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2112 don't warn on legal loop code involving more than one aggregate
2113 boolean. (thanks to Nikodemus Siivola)
2114 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2115 in keyword position to MAKE-PACKAGE was not being reported as
2117 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2118 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2120 * fixed bugs 280 and 312: the checking for multiple definitions in a
2121 file is less likely to become confused by uses of inline
2123 * fixed bug: the #S reader macro performs the keyword coercion
2124 specified for slot names. (reported by Kalle Niemitalo)
2125 * fixed bug: lambda lists may contain symbols whose names start with
2126 & but are not lambda-list-keywords; their occurrence triggers a
2128 * fixed bug 321: define-method-combination argument lambda lists do
2129 not cause invalid code to be generated when &optional or &aux
2130 variables have default values. (reported by Bruno Haible)
2131 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2132 have CLOS classes; this appears also to have fixed reported
2133 instability in stack exhaustion detection.
2134 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2135 MUFFLE-WARNING when no associated restart is present is now
2137 * optimization: rearranged the expansion of various defining macros
2138 so that each expands into only one top-level form in a
2139 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2141 * optimization: used a previously little-used slot in symbols to
2142 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2144 * fixed some bugs revealed by Paul Dietz' test suite:
2145 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2147 ** Fixed an optimization bug related to inheritance of initforms
2148 from local to shared slots.
2149 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2150 ** CAST optimizer forgot to flush argument derived type.
2151 ** print/read consistency on floats is now orders of magnitude
2152 more likely. (thanks also to Bruno Haible for a similar report
2154 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2155 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2156 for objects of type REAL. Make it so.
2157 ** SXHASH is specified (infelicitously) to respect similarity,
2158 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2159 it so. (thanks to Markus Ziegler)
2160 ** on the Alpha, the compiler succeeds in compiling functions
2161 returning a known number of arguments greater than 63.
2162 ** fixed handling of invalid NIL arguments in keyword position
2164 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2166 ** provided a readably-printable representation for RANDOM-STATE
2168 ** ensured that pathnames, where they have a namestring, always
2169 print using #P"..." syntax.
2171 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2172 * Support for the forthcoming 2.0 version of the NetBSD kernel
2173 running on x86 hardware has been added. (thanks to Perry
2174 E. Metzger most immediately, and others for their past work)
2175 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2176 current release version; SBCL's OpenBSD support had been broken
2177 since about the time of OpenBSD's switch to ELF binary format.)
2178 * [placeholder for DX summary]
2179 ** user code with &REST lists declared dynamic-extent, under high
2180 speed or space and low safety and debug optimization policy.
2181 * The manual has been converted to Texinfo format and the debugger
2182 chapter from the cmucl manual has been added.
2183 * A facility has been added to extract documentation strings from
2184 sbcl and store them as Texinfo-formatted snippets for inclusion in
2185 the manual (via Texinfo's @include directive)
2186 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2187 the test case to Dave Roberts)
2188 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2189 pointers. (reported by Sean Ross)
2190 * bug fix: PROFILE output is printed nicely even for large numerical
2191 values. (thanks to Zach Beane)
2192 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2193 greater than 32 handle EOF correctly.
2194 * bug fix: on X86 an immediate argument of the IMUL instruction is
2195 correctly printed in disassembly. (thanks to Lutz Euler)
2196 * bug fix: class slots in redefined classes preserve their old
2197 values. (thanks to Bruno Haible and Nikodemus Siivola)
2198 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2199 succeeds. (reported by Marco Baringer)
2200 * fixed some bugs revealed by Paul Dietz' test suite:
2201 ** READ-SEQUENCE now works on ECHO-STREAMs.
2202 ** RATIONALIZE works more according to its specification. (thanks
2205 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2206 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2207 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2208 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2209 should matter to you only if you rebind the printer control
2210 variables and then find you want different bindings in the
2211 debugger than in the ordinary execution of your program.)
2212 * The runtime build system has been tweaked to support building
2213 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2214 assembler and linker. (thanks to Nikodemus Siivola)
2215 * Unbound, undefined, undeclared variables now trigger full
2216 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2217 more often programmer error than deliberate exploitation of undefined
2219 * optimization: the hash algorithm for strings has changed to one
2220 that is less vulnerable to spurious collisions. (thanks to Juho
2222 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2223 needless bounds checking. (thanks to Juho Snellman)
2224 * optimization: implemented multiplication as a modular
2225 (UNSIGNED-BYTE 32) operation on the PPC backend.
2226 * fixed some bugs revealed by Paul Dietz' test suite:
2227 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2229 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2230 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2231 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2233 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2235 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2237 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2238 their output stream on EOF from read.
2239 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2240 have been read to end-of-file.
2241 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2243 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2244 description of determination of which consecutive characters
2246 ** Printing the "Space" character with escaping on now yields "#\\ ",
2247 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2248 ** Reading floating-point numbers with *READ-BASE* set to a number
2249 less than 10 works correctly.
2250 ** Reading floating-point numbers with *READ-BASE* set to a number
2251 more than 10 works correctly.
2252 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2253 the readtable currently in effect.
2255 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2256 * minor incompatible change: parsing of namestrings on a physical
2257 (Unix) host has changed; numbers after the final #\. in a
2258 namestring are no longer interpreted as a version field. This is
2259 intented to be largely invisible to the user, except that the
2260 meaning of the namestring "*.*.*" has changed: it now refers to a
2261 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2262 should usually be replaced by
2263 (make-pathname :name :wild :type :wild :version :wild)
2264 with the added benefit that this is more likely to be portable.
2265 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2266 option to OPEN now signals an error if the file being opened
2267 exists; this may have an impact on existing code.
2268 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2269 signals received, on the PowerPC platforms (both Linux and
2270 Darwin). (thanks to Pierre Mai for pointing out the location of
2272 * several fixes on OS X: The system now builds and runs cleanly on
2273 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2274 (thanks to Brian Mastenbrook)
2275 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2276 second-resolution: integer multiples of 1/3600 between -24 and 24.
2277 (thanks to Vincent Arkesteijn)
2278 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2279 type when called with 1 argument; PEEK-CHAR checked type of
2280 PEEK-TYPE only after having read first character from a
2281 stream. (reported by Peter Graves)
2282 * bug fix: the garbage collector now has much better locality
2283 behaviour, and in particular no longer treats all memory as being
2284 exhausted when many small objects point to each other in a deeply
2286 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2287 recognized as being TYPEP their class.
2288 * bug fix: the PUSHNEW documentation string has been corrected.
2289 (thanks to Vincent Arkesteijn)
2290 * bug fix: defaulting of the value for the last of an atypically
2291 large number of multiple values being bound was not being
2292 performed correctly on the Alpha or PPC platforms
2293 * optimization: implemented multiplication as a modular
2294 (UNSIGNED-BYTE 32) operation on the x86 backend.
2295 * optimization: SEARCH on simple-base-strings can now be open-coded.
2296 (see also contrib/compiler-extras.lisp for inspiration for
2297 teaching the compiler about the Boyer-Moore algorithm).
2298 * value, returned by MAX (and MIN) called with several EQUALP, but
2299 not EQL, arguments now does not depend on compiler settings.
2300 * fixed some bugs revealed by Paul Dietz' test suite:
2301 ** in stack analysis liveness information is propagated from
2302 non-local entry points.
2303 ** pathwise CAST removing failed when the CAST node did not start
2305 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2306 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2308 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2309 host is already defined.
2310 ** RENAME-FILE works on streams instead of signalling an internal
2312 ** PEEK-CHAR uses the current readtable when determining whether
2313 or not a character is whitespace.
2314 ** MERGE-PATHNAMES handles the case when the pathname does not
2315 specify a name while the default-pathname specifies a version.
2316 ** Pathnames now stand a better chance of respecting print/read
2318 ** Attempting to use standardized file system operators with a
2319 pathname with invalid :DIRECTORY components signals a
2321 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2323 ** DIRECTORY on logical pathnames is more correct.
2324 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2325 signal a TYPE-ERROR if their argument is not a stream.
2326 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2327 designator argument does not designate a stream.
2328 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2329 examining the synonym.
2330 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2332 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2333 element-type larger than ([UN]SIGNED-BYTE 32).
2335 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2336 * When built with the :SB-FUTEX feature, threaded builds now take
2337 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2338 for faster/more reliable mutex and condition variable support.
2339 * Incompatible change (but one you probably shouldn't have been using
2340 anyway): the interface and code for arbitrating between multiple
2341 threads in the same user session has been redesigned.
2342 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2343 error when called without an explicit environment argument.
2344 (thanks to Nikodemus Siivola)
2345 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2346 confused about their position. (thanks to Adam Warner and Gerd
2348 * bug fix: Pretty printing backquoted forms with unquotations in the
2349 argument list position of various code constructs such as LAMBDA
2350 now works correctly. (reported by Paul Dietz)
2351 * bug fix: Pretty printing unquotations no longer loses all
2352 stream position information.
2353 * optimization: performance of string output streams is now less
2354 poor for multiple small sequence writes.
2355 * optimization: performance of CSUBTYPEP in the presence of complex
2356 expressions involving CONS and NOT many times has been improved.
2357 (reported by Paul Dietz)
2358 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2360 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2361 streams for the REPL, for the debugger, and so on. (thanks to
2363 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2364 * fixed some bugs revealed by Paul Dietz' test suite:
2365 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2366 is ignored if it is too small, rather than propagating through
2367 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2368 ** extremely complex negations of CONS types were not being
2369 sufficiently canonicalized, leading to inconsistencies in
2371 ** VALUES tranformer lost derived type.
2373 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2374 * fixed a bootstrapping bug: the build process no longer assumes
2375 that the various BOOLE-related constants have the same value in
2376 host and target lisps. (noted by Paul Dietz' test suite on an
2377 SBCL binary built from CLISP)
2378 * The system can now be dynamically linked on the MIPS platform,
2379 which enables dynamic loading of foreign code from Lisp. (thanks
2380 to Ralf Baechle for discussions on the MIPS ABI)
2381 * The system now records debugging information for its own source
2382 files in a filesystem-position-independent manner, relative to
2383 the "SYS" logical host.
2384 * fixed a compiler bug: MV-LET convertion did not check references
2385 to the "max args" entry point. (reported by Brian Downing)
2386 * tweaked disassembly notes to be less confident about proclaiming
2387 some instruction as an LRA. (thanks to Brian Downing)
2388 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2389 now each have their own history, command character, and other
2390 characteristics. (thanks to David Lichteblau)
2391 * fixed some bugs revealed by Paul Dietz' test suite:
2392 ** compiler failure in compiling LOGAND expressions including a
2394 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2395 shift greater than 32.
2396 ** FLUSH-DEST did not mark blocks for type check regeneration.
2397 ** HANDLER-CASE failed to accept declarations in handler clauses
2398 in some circumstances.
2400 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2401 * New code in contrib/sb-introspect (still probably not entirely
2402 stable yet) provides some support for smart Lisp development
2403 environments like SLIME.
2404 * The conditions signalled for errors occurring when loading .fasl
2405 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2406 in a way which should help ASDF recover gracefully.
2407 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2408 stuff has been cleaned up. If you code contrib/ stuff, this might
2409 affect you, and you can look at contrib/README, contrib/STANDARDS,
2410 and/or the 0.8.4.27 diff to check.
2411 * In full calls the compiler now does not generate checks for declared
2412 argument types for all arguments.
2413 * various threading fixes
2414 ** and some experimental patches which didn't make it into
2415 the main tree for this release, but which are shipped in
2416 contrib/experimental-thread.patch as a possible fix for some
2417 failures (deadlock, spinning...) in GC-intensive multithreaded
2419 * fixed PPC build problem (source code incompatibility of different
2420 library versions): added offsetof() hackery which attempts to divine
2421 where glibc maintainers put uc_mcontext today
2422 * fixed bug 282: compiler does not trust type assertions while passing
2423 arguments to a full call.
2424 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2425 &OPTIONAL VALUES type parameter.
2426 * fix bug 214: algorithm for noting rejected templates is now more
2427 similar to that of template seletion. (also reported by rydis on
2429 * fixed bug 141b: printing backquoted information readably and prettily
2430 inserts a space where necessary.
2431 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2432 (CHARACTER 10) are now reported as errors, rather than propagated
2433 as unknown types. (reported by piso on #lisp)
2434 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2435 with values NIL and :ERROR. (thanks to Milan Zamazal)
2436 * fixed bug 191c: CLOS now does proper keyword argument checking as
2437 described in CLHS 7.6.5 and 7.6.5.1.
2438 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2439 longer raise an error; further, using a list as a for-as-arithmetic
2440 counter now raises a meaningful error.
2441 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2442 now understood by sequence creation functions such as MAKE-SEQUENCE
2444 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2445 a STRING-INPUT-STREAM.
2446 * compiler enhancement: SIGNUM is now better able to derive the type
2448 * type declarations inside WITH-SLOTS are checked. (reported by
2450 * fixed some bugs revealed by Paul Dietz' test suite:
2451 ** incorrect optimization of TRUNCATE for a positive first
2452 argument and negative second.
2453 ** compiler failure in let-convertion during flushing dead code.
2454 ** compiler failure while deriving type of TRUNCATE on an
2455 interval, containing 0.
2456 ** ASH of a negative bignum by a negative bignum count now returns
2458 ** intersection of CONS types now canonicalizes properly, fixing
2459 inconsistencies in SUBTYPEP.
2461 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2462 * incompatible change: The --disable-debugger command line
2463 option now clobbers the debugger at a more fundamental
2464 level, by redefining #'INVOKE-DEBUGGER instead of by
2465 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2466 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2467 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2468 enter the debugger REPL and then suffer recursive errors
2469 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2470 while under the new system, BREAK in --disable-debugger mode
2471 terminates the system just as an unhandled error would.
2472 * fixed compiler performance when processing loops with a step >1;
2473 * bug fix: DOCUMENTATION now retrieves generic function
2474 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2475 support has been systematized, and now supports the methods
2476 specified by ANSI, along with a default method and a method for
2477 slot documentation. (reported by Nathan Froyd)
2478 * bug fix: effective methods associated with a generic function are
2479 no longer cached over a change of that generic function's method
2480 combination. (reported by Andreas Fuchs)
2481 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2482 names a non-existent directory. (thanks to Andreas Fuchs)
2483 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2484 the PPC platform, lead to stack corruption; this has been fixed.
2485 (reported by Rainer Joswig)
2486 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2487 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2488 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2489 arithmetic in general, is now much more reliable on the PPC
2491 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2492 platform now returns the right answer.
2493 * optimization: restored some effective method precomputation in
2494 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2495 precomputation is now tunable.
2496 * optimization: compiler-internal data structure use has been
2497 reviewed, and changes have been made that should improve the
2498 performance of the compiler by about 20%.
2499 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2500 simple-base-strings and simple-bit-vectors is improved.
2501 * optimization: the optimization of 32-bit logical and arithmetic
2502 functions introduced in version 0.8.3 on the x86 has been
2503 implemented on the mips, ppc and sparc platforms; an
2504 implementation of the same facility, but for 64-bit arithmetic,
2505 has been added for the alpha.
2506 * microoptimization: the compiler is better able to make use of the
2507 x86 LEA instruction for multiplication by constants.
2508 * bug fix: in some situations compiler did not report usage of
2509 generic arithmetic in (SPEED 3) policy.
2510 * bug 145b fix: compiler used wrong type specifier while converting
2511 MEMBER-types to numeric.
2512 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2514 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2515 index argument now works properly on the Alpha platform.
2516 * bug fix: floating point exception treatment on the Alpha platform
2518 * bug fix: FILE-POSITION works much better on string input and
2519 output streams. (thanks to Nikodemus Siivola)
2520 * bug fix: many threading/garbage collection symptoms sorted.
2521 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2522 might be pseudo-atomic.
2523 * internal change: Stopping for GC is now done with signals not
2524 ptrace. GC is now done in whichever thread wanted it, instead of
2526 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2528 * bug fix: result form in DO is not contained in the implicit
2530 * incompatible change: ICR structure is changed; the value part of
2531 CONTINUATION is now called LVAR; corresponding functions are
2532 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2533 * added type deriver for ISQRT (thanks to Robert E. Brown).
2534 * bug fix: better support for loading from the command line when an
2535 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2537 * fixed some bugs revealed by Paul Dietz' test suite:
2538 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2539 ** ROUND and FROUND now give the right answer when given very
2540 small float arguments.
2541 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2543 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2544 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2545 ** LCM should return a non-negative integer.
2546 ** PARSE-INTEGER returned the index of a terminator instead of the
2547 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2548 ** PARSE-INTEGER returned an incorrect index being applied to a
2550 ** LCM with two arguments of 0 returns 0 rather than signalling
2552 ** unsigned addition of a 32-bit constant with the high bit set no
2553 longer causes an internal compiler error on the x86.
2554 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2555 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2556 with negative last argument.
2557 ** byte specifiers with zero size and position no longer cause
2558 an error during type derivation.
2559 ** bignum multiplication on the Alpha platform now returns the
2561 * porting: The system now builds on SuSE AMD64, although it still
2562 generates a 32-bit binary.
2563 * .fasl file incompatibility: The fasl file version number has
2564 been incremented (because of the changes to internal compiler
2565 data structures referred to above).
2567 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2568 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2569 more accurately, on the Darwin kernel running on PowerPC hardware.
2570 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2571 * Compiler code deletion notes now signal a condition of type
2572 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2573 an associated MUFFLE-WARNING restart.
2574 * The compiler now performs limited argument count validation of
2575 constant format strings in FORMAT, and where appropriate in ERROR,
2576 CERROR and WARN. (thanks to Gerd Moellmann)
2577 * New ASDF-INSTALL contrib can be used for automatic download and
2578 installation of third-party Lisp code from CCLAN or other sites
2580 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2581 which forces another thread to execute a function supplied by the
2583 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2584 now accept and act upon their :ELEMENT-TYPE keyword argument.
2585 (reported by Martin Atzmueller, Edi Weitz)
2586 * bug fix: FILE-POSITION now accepts position designators up to
2587 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2588 is the greater. (thanks to Patrik Nordebo)
2589 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2590 Kalle Olavi Niemitalo)
2591 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2592 printable. (reported by Eric Marsden)
2593 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2594 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2595 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2596 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2597 (thanks to Stig Sandoe)
2598 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2599 UNREAD-CHAR now correctly includes the unread character in the
2600 target sequence. (thanks to Gerd Moellmann)
2601 * bug fix in threaded builds: the system can now be suspended and
2602 resumed by shell job control with minimal disruption.
2603 * bug fixes in times and timezones >2038AD
2604 * better handling of "where is GNU make?" problem in build scripts
2605 (thanks to Nikodemus Siivola)
2606 * new optimization: inside a named function any reference to a
2607 function with the same name is considered to be a self-reference;
2608 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2609 optimization quality.
2610 * new optimization on x86: logical functions and + now have
2611 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2612 used when the result is truncated to 32 bits.
2613 * VALUES declaration is partially enabled.
2614 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2615 * fixed some bugs revealed by Paul Dietz' test suite:
2616 ** The system now obeys the constraint imposed by
2617 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2618 types form a lattice under type intersection.
2619 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2620 ** ASSOC now ignores NIL elements in an alist.
2621 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2622 and (1+ MOST-POSITIVE-FIXNUM) answers.
2623 ** The addition of a method with invalid qualifiers to a generic
2624 function does not cause an error to be signalled immediately;
2625 a warning is signalled, and the error is generated only on
2626 calling the generic function.
2627 * changed .fasl file version number, in part to add type codes for
2628 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2629 obscure ANSI requirements
2631 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2632 * fixed bug 148: failure to inline-expand a local function left
2633 garbage, confusing the compiler.
2634 * fixed bugs 3cd: structure slot readers perform type check if the
2635 slot can have an invalid value (i.e. it is either not initialized
2636 or can be written with a less specific slot writer).
2637 * bug fix: the compiler now traps array references to elements off
2638 the end of an array; previously, the bounds checking in some
2639 circumstances could go off-by-one.
2640 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2642 * type declarations for array element types now obey the description
2643 on the CLHS page "Declaration TYPE", as per discussions on
2644 sbcl-help around 2003-05-08. This means that a declaration
2645 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2646 declaration, all references to BAR will be asserted or assumed
2647 (with THE, so dependent on compiler policy) to involve objects of
2648 type FOO. Note that no such declaration is implied in
2649 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2650 * declared types of functions from the "Conditions"
2651 chapter. (reported by Paul Dietz)
2652 * bug fix: CERROR accepts a function as its first argument.
2653 * bug fix: NTH an NTHCDR accept a bignum as index
2654 arguments. (reported by Adam Warner)
2655 * optimization: character compare routines now optimize comparing
2656 against a constant character. (reported by Gilbert Baumann)
2657 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2658 argument now works properly on the MIPS platform.
2659 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2660 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2661 declared to have a functional type, does not cause an error
2663 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2664 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2665 * fixed bug: if last continuation of a deleted block has a
2666 destination, this destination should be deleted too. (reported by
2668 * fixed a bug in the bootstrap process: the host compiler's values
2669 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2670 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2671 test case from Patrik Nordebo)
2672 * improved the ability of the disassembler on the PPC platform to
2673 provide helpful disassembly notes.
2674 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2675 the class in more cases than previously.
2676 * bug fix: FILE-POSITION now understands :START and :END for
2677 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2678 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2679 8) data. (thanks to David Lichteblau)
2680 * bug fix: it is possible to add a method to a generic function
2681 without lambda list.
2682 * bug fix: reader failed to signal END-OF-FILE inside an
2683 object representation. (reported by Nikodemus Siivola)
2684 * fixed some bugs revealed by Paul Dietz' test suite:
2685 ** LAST and [N]BUTLAST should accept a bignum.
2686 ** condition slot accessors are methods.
2687 ** (VECTOR NIL) is a subtype of STRING.
2689 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2690 * minor incompatible change: some nonsensical specialized lambda
2691 lists (used in DEFMETHOD) which were previously ignored now signal
2693 * minor incompatible change: the system is now aware of the types of
2694 variables in the COMMON-LISP package, and will signal errors for
2695 most violations of these type constraints (where previously they
2696 were silently accepted).
2697 * minor incompatible change: COMPILE-FILE now uses the freedom
2698 afforded (ANSI 3.2.2.3) to use derived function types for
2699 functions defined in the same file. This also permits the system
2700 to warn on static type mismatches and function
2701 redefinition. (Currently it does not work with high DEBUG level.)
2702 * minor incompatible change: VALUES declaration is disabled.
2703 * When issuing notes, the compiler now signals a condition of type
2704 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2705 restart for use in user handlers. It is expected that the
2706 COMPILER-NOTE condition will eventually become a condition
2707 supertype to a hierarchy of note types, which will then be
2708 handleable in a similar fashion. However, at the moment, no such
2709 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2710 but it's an implementation detail, not a classification for the
2712 * Changes in type checking closed the following bugs:
2713 ** type checking of unused values (192b, 194d, 203);
2714 ** template selection based on unsafe type assertions (192c, 236);
2715 ** type checking in branches (194bc).
2716 * A short form of VALUES type specifier has ANSI meaning (it has
2717 increased the number of situations when SBCL cannot perform type
2719 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2720 keywords or constants is permissible.
2721 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2722 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2723 classes. (thanks to Antonio Martinez)
2724 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2725 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2726 argument to a pretty-print stream. Instead, it leaves any such
2727 operations to DESCRIBE-OBJECT methods.
2728 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2730 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2731 lambda lists. (thanks to David Lichteblau)
2732 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2733 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2734 (thanks to Gerd Moellmann)
2735 * fixed bug 246: increased compilation speed of long
2736 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2738 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2740 * DEFCONSTANT now throws a condition of type
2741 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2742 constant to a non-EQL value; CONTINUE and ABORT restarts
2743 respectively change and preserve the value.
2744 * fixed bug 63: The code walker, part of the implementation of CLOS,
2745 is now better at handling symbol macros.
2746 * bug fix: There is no longer an internal implementation type named
2747 CL:LENGTH. (reported by Raymond Toy)
2748 * bug fix: In macro-like defining macros/special operators the
2749 implicit block does not enclose the lambda list.
2750 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2751 enclosed in parentheses) are not suitable as type specifiers, and
2752 their use properly signals an error now.
2753 * bug fix: An argument count mismatch for a type specifier in code
2754 being compiled no longer causes an unhandled error at compile
2755 time, but signals a compile-time warning.
2756 * fixed simple vector readable printing
2757 * bug fix: DESCRIBE takes more care over whether the class
2758 precedence list slot of a class is bound before accessing it.
2759 (reported by Markus Krummenacker)
2760 * bug fix: FORMATTER can successfully compile pretty-printer format
2761 strings which use variants of the ~* directive inside.
2762 * bug fix: SEARCH now applies its TEST predicate to the elements of
2763 the arguments in the correct order. (thanks to Wolfhard Buss)
2764 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2765 in type inference. (thanks to Robert E. Brown)
2766 * bug fix: Reading in symbols with an explicit package name of ""
2767 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2768 * fixed some bugs revealed by Paul Dietz' test suite:
2769 ** NIL is now allowed as a structure slot name.
2770 ** Arbitrary numbers, not just REALs, are allowed in certain
2771 circumstances in LOOP for-as-arithmetic clauses.
2772 ** Multiple class redefinitions before slot access no longer
2773 causes a type error.
2774 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2775 association between the name and a class.
2776 ** Generic functions with non-standard method-combination and over
2777 five methods all of which return constants no longer return NIL
2778 after the first few invocations. (thanks to Gerd Moellmann)
2779 ** CALL-NEXT-METHOD with no arguments now passes the original
2780 values of the arguments, even in the presence of assignment.
2781 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2783 ** DISASSEMBLE works with closures and funcallable instances.
2784 ** ADD-METHOD now returns the generic function, not the new method.
2785 ** FIND-METHOD signals an error if the lengths of the specializers
2786 is incompatible with the generic function, even if the ERRORP
2788 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2789 which its argument is a member.
2790 ** DEFCLASS only redefines the class named by its class-name
2791 argument if that name is the proper name of the class;
2792 otherwise, it creates a new class.
2793 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2794 of the UNBOUND-SLOT condition to the name of the slot.
2795 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2796 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2797 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2798 SLOT-MAKUNBOUND in the specified fashion.
2800 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2801 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2802 cross-compilation host. As a consequence, we can now bootstrap our
2803 way up to SBCL starting with a bare gcc toolchain and human-readable
2804 source code (first the source to CLISP, then the source to SBCL).
2805 * A contributed module containing a partial implementation of the
2806 simple-streams interface has been included. (thanks to Rudi
2808 * A contributed module implementing the RFC1321 Message Digest
2809 Algorithm, known as MD5, has been included.
2810 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2811 no longer has any effect, as the code controlled by this feature
2812 has been deleted. (As far as we know, no-one has ever built using
2813 this feature, and its semantics were confused in any case).
2814 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2815 work on conditions (as required by the ANSI specification),
2816 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2817 expected behaviour on conditions. Users should note, however,
2818 that such behaviour is not required by the ANSI specification,
2819 and so use of this behaviour may render their code unportable.
2820 * fixed some bugs revealed by Paul Dietz' test suite:
2821 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2823 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2824 ** SXHASH on condition objects no longer returns NIL.
2825 ** :ALLOCATION :CLASS slots are better treated; their values are
2826 updated on class redefinition, and initforms inherited from
2827 superclasses are applied.
2828 ** REMOVE-METHOD returns its generic function argument even when
2829 no method was removed.
2830 ** SHARED-INITIALIZE now initializes the values of the requested
2831 slots, including those with :ALLOCATION :CLASS.
2832 ** ALLOCATE-INSTANCE now works on structure classes defined via
2833 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2835 ** SLOT-EXISTS-P now works on conditions, as well as structures
2837 ** MAKE-LOAD-FORM now has the required methods on
2838 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2839 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2840 keyword, and now implements the SLOT-NAMES argument.
2841 ** methods with &OPTIONAL arguments no longer allow too many
2842 arguments to be passed in the call without error.
2843 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2844 option is consistent with the required arguments of the generic
2845 function lambda list.
2846 * bug fix: REQUIRE accepts a string designator. (Thanks to
2848 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2849 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2850 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2851 * bug fix: The compiler now checks for duplicated variables in macro
2853 * bug fix: SETQ on globals returns the correct value.
2854 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2855 not a COMPILER-ERROR (followed by some other strange error on
2856 choosing the CONTINUE restart).
2857 * bug fix: make.sh and friends are now more consistent in the way that
2858 they look for GNU "make".
2860 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2861 * experimental native threads support (on x86 Linux >=2.4 only).
2862 This is not compiled in by default: you need to add :SB-THREAD to
2863 the target features. See the "Beyond ANSI" chapter of the manual
2865 * fix for longstanding nonANSIism: The old distinction between
2866 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2867 The return value from CL:FIND-CLASS is now a CLOS class, and
2868 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2869 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2870 * An interface to the MetaObject Protocol, as described in Kiczales,
2871 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2872 MIT Press, 1991, is available from the SB-MOP package.
2873 * incompatible change: the SB-PCL package should now be considered
2874 a private implementation detail, and no longer a semi-private MOP
2876 * minor incompatible change: due to rearrangement for threads, the
2877 control stack and binding stack are now allocated at arbitrary
2878 addresses instead of being hardcoded per-port. Users affected by
2879 this probably have to be doing advanced things with shared
2880 libraries, and will know who they are.
2881 * minor incompatible change: Previously, all --eval forms used were
2882 processed with READ before any of them were processed with EVAL.
2883 Now each --eval form is processed with both READ and EVAL before
2884 the next --eval form is processed. (Thus package operations like
2885 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2886 work as the user might reasonably expect.)
2887 * minor incompatible change: *STANDARD-INPUT* is now only an
2888 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2890 * minor incompatible change: Y-OR-N-P is now character-oriented,
2891 not line oriented. Also, YES-OR-NO-P now works without errors.
2892 (thanks to Antonio Martinez)
2893 * sb-aclrepl module improvements: an integrated inspector, added
2894 repl features, and a bug fix to :trace command.
2895 * Known functions, which cannot be open coded by the backend, are
2896 considered to be able to check types of their arguments. (fixing
2897 a bug report by Nathan J. Froyd)
2898 * fixed a bug in computing method discriminating functions: It is
2899 now possible to define methods specialized on classes which have
2900 forward-referenced superclasses. (thanks to Gerd Moellmann)
2901 * fixed evaluation order in optional entries (reported by Gilbert
2903 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2904 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2905 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2906 required-by-AMOP NAME argument, as well as CLASS and
2907 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2908 * fixed bug 20: DEFMETHOD can define methods using names that are
2909 not the proper names of classes to designate class specializers.
2910 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2911 Unix file descriptors, instead of blowing up. (thanks to Antonio
2913 * Garbage collection refactoring: user-visible change is that a
2914 call to the GC function during WITHOUT-GCING will not do garbage
2915 collection until the end of the WITHOUT-GCING. If you were doing
2916 this you were probably losing anyway.
2917 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2918 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2919 TYPEP the latter but not the former.
2920 * The compiler issues a full WARNING for calls to undefined functions
2921 with names from the CL package.
2922 * MAP-INTO for a vector destination is open coded. (reported by
2923 Brian Downing on c.l.l)
2924 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2925 documentation string.
2926 * fixed some bugs revealed by Paul Dietz' test suite:
2927 ** COPY-ALIST now signals an error if its argument is a dotted
2929 ** Condition slots are now accessed more correctly in the presence
2930 of multiple initargs for a given slot.
2931 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2932 exclude restarts of the same name associated with a different
2934 ** DEFCLASS of forward-referenced classes with another
2935 forward-referenced class in the superclasses list no longer
2937 ** Condition slots are now initialized once each, not multiple
2938 times. (thanks to Gerd Moellmann)
2939 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2941 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2942 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2943 arguments contain duplicated elements.
2944 ** RESTART-CASE understands local macros.
2945 ** RESTART-CASE associates exactly its own restarts with a condition.
2946 ** ENDP in safe mode checks its argument to be of type LIST.
2947 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2948 in question is unbound.
2949 ** Optimized MAKE-INSTANCE functions no longer cause internal
2950 assertion failures in the presence of duplicate initargs.
2951 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2952 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2953 propagated even in the ctor optimized implementation of
2955 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2957 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2958 * a better implementation of SXHASH on (simple) bit vectors,
2959 measured both in execution speed and in distribution of results
2960 over the positive fixnums, has been installed. Likewise, a better
2961 implementation of EQUAL for simple bit vectors is now available.
2962 * fixed CEILING optimization for a divisor of form 2^k.
2963 * fixed bug 240 (emitting extra style warnings "using the lexical
2964 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2965 by Antonio Martinez)
2966 * fixed SXHASH, giving different results for NIL depending on type
2967 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2968 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2969 variable. (found by Rolf Wester)
2970 * SBCL does not ignore type declarations for special
2971 variables. (reported by rif on c.l.l 2003-03-05)
2972 * some bug fixes in contrib/sb-aclrepl/
2973 * fixed some bugs revealed by Paul Dietz' test suite:
2974 ** a bug in the CONS type specifier, whereby the CAR and CDR
2975 types got intertwined, has been fixed;
2976 ** the type system is now able to reason about the interaction
2977 between INTEGER and RATIO types more completely;
2978 ** APPEND, [N]REVERSE and NRECONC check that those their
2979 arguments, which must be proper lists, are really so;
2980 ** An array specialized to be unable to hold elements has been
2981 implemented, as required -- yes, really -- by ANSI;
2982 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2983 on malformed property lists;
2985 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2986 * incompatible packaging change: in line with Unix convention,
2987 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2988 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2989 * REQUIRE and PROVIDE are now optionally capable of doing something
2990 useful. See the documentation string for REQUIRE.
2991 * infrastructure for a managed SBCL contrib system: contributed
2992 modules in this release include:
2993 ** the ASDF system definition facility;
2994 ** an interface to the BSD Sockets API;
2995 ** an ACL-like convenience interface to the repl;
2996 (thanks to Kevin Rosenberg)
2997 ** an implementation of ROTATE-BYTE, with efficient implementation
2999 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3000 gives a closer approximation to the right answer than previously.
3001 (thanks to Raymond Toy)
3002 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3003 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3004 optional environment arguments, as required by ANSI.
3005 * fixed bugs in other functions taking environment objects, allowing
3006 calls with an explicit NIL environment argument to be compiled
3008 * fixed bug 228: primary return values from
3009 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3010 COMPILE or FUNCTION.
3011 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3012 :TYPE will no longer signal errors on innocuous objects.
3013 * fixed bug 231b: SETQ is better at respecting type declarations in
3014 the lexical environment.
3015 * fixed a bug in DEFCLASS: classes named by symbols with no or
3016 unprintable packages can now be defined.
3017 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3018 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3019 * fixed compiler failure related to checking types of functions.
3020 (reported by Robert E. Brown)
3021 * the compiler is now much more consistent in its error-checking
3022 treatment of bounding index arguments to sequence functions: in
3023 (SAFETY 3) code, errors will be signalled in almost all cases if
3024 invalid sequence bounding indices are passed to functions defined
3025 by ANSI to operate on sequences.
3026 * fixed a bug in the build procedure: documentation of SBCL-specific
3027 packages is now preserved and available in the final Lisp image.
3028 * lifted FDEFINITION lookup out of loops in the implementation of
3029 many list operations. (thanks to Robert E. Brown)
3030 * fixed a bug in the reader: the #n# reader macro now works for
3031 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3032 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3033 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3034 E. Brown and Tony Martinez respectively)
3035 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3036 SLOT-BOUNDP: in particular, it is now able to optimize them much
3037 better, and is now not vulnerable to having packages renamed.
3038 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3039 always called when a slot is not present in an instance. (thanks
3041 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3042 longer signal an error on unreading a character following EOF on
3043 the previous constituent stream. (thanks to Tony Martinez)
3044 * fixed some bugs revealed by Paul Dietz' test suite:
3045 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3046 not just nonnegative fixnums;
3047 ** the logical bit-array operators such as BIT-AND now accept an
3048 explicit NIL for their "opt-arg" argument (to indicate a
3049 freshly-consed result bit-array);
3050 ** ELT now signals an error on an invalid sequence index in safe
3052 ** the type system is now cleverer about negations of numeric
3053 types, and consequently understands the BIGNUM and RATIO types
3055 ** the type system is now cleverer about the interaction between
3056 INTEGER and RATIO types: while bugs still remain, many more
3057 cases are accurately computed;
3058 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3059 if it is in the last clause;
3060 ** CONSTANTLY now correctly returns a side-effect-free function in
3062 ** DECLARE is no longer treated as a special-operator; in
3063 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3064 * incremented fasl file version number due to the change in the
3065 DEFSTRUCT-SLOT-DESCRIPTION structure.
3067 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3068 * minor incompatible change: code processed by the "interpreter" or
3069 EVAL now has a compilation optimization policy of (DEBUG 2)
3070 (changed from (DEBUG 1)) to improve debuggability of interactive
3071 development, and to allow the use of the debug RETURN command in
3073 * an experimental implementation of the RETURN command for the
3074 debugger has been included. (thanks to Frederik Kuivinen)
3075 * fixed bug 62: constraints were not propagated into a loop.
3076 * fixed bug in embedded calls of SORT (reported and investigated by
3078 * fixed some bugs revealed by Paul Dietz' test suite:
3079 ** printing and reading of arrays with some dimensions having
3080 length 0 (thanks to Gerd Moellmann);
3081 ** BOA constructor with &AUX argument without a default value does
3082 not cause a type error;
3083 ** CONSTANTP now returns true for all self-evaluating objects.
3085 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3086 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3087 accessors that are related by inheritance, as specified in the
3088 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3089 Valtteri Vuorikoski)
3090 * The compiler is now able to inline functions that were defined in
3091 a complex lexical environment (e.g. inside a MACROLET).
3092 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3094 * Support for the upcoming FreeBSD-5.0 release has been included.
3095 (thanks to Dag-Erling Smorgrav)
3096 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3097 effect when it is not in a toplevel context.
3098 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3099 stand a better chance of being correct. (thanks to Gerd
3101 * fixed bug in COERCE, which now signals an error on coercing a
3102 rational to a bounded real type which excludes the expected
3104 * The compiler is now able to derive types more accurately from the
3105 COERCE and COMPILE functions.
3106 * fixed bug 223: functional binding is considered to be constant
3107 only for symbols in the CL package.
3108 * fixed bug 231: SETQ did not check the type of a variable being set
3109 (reported by Robert E. Brown)
3110 * A new optimization for MAKE-INSTANCE has been included, fixing
3111 various bugs (including relating to :ALLOCATION :CLASS slots and
3112 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3114 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3115 ** As required by ANSI, LOOP now disallows anonymous collection
3116 clauses such as COLLECT I in conjunction with aggregate boolean
3117 clauses such as THEREIS (= I 1);
3118 ** LOOP now signals an error when any variable is reused in the
3119 same loop (including the potentially useful construct analogous
3120 to WITH A = 1 WITH A = (1+ A);
3121 ** IT is only a special loop symbol within the first clause of a
3122 conditional loop clause;
3123 ** LOOP with a typed iteration variable over a hashtable now
3124 signals a type error iff it should.
3125 * fixed some other bugs revealed by Paul Dietz' test suite:
3126 ** FILE-STREAM now names the class previously known as FD-STREAM;
3127 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3128 argument) no longer signals an error;
3129 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3130 of the slot symbol, rather than using the current package
3131 ((:CONC-NAME "") continues to intern the slot's name in the
3133 * incremented fasl file version number, because of the incompatible
3134 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3135 of the new implementation of DEFINE-COMPILER-MACRO.
3137 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3138 * Support for building SBCL for MIPS platforms running in
3139 little-endian mode has now been checked in, and basic
3140 functionality on said platforms verified.
3141 * minor incompatible change: PCL now records the pathname of a file
3142 in which methods and the like are defined, rather than its
3144 * minor incompatible change: TRUENAME now considers the truename of
3145 a file naming a directory to be the pathname with :DIRECTORY
3146 component indicating that directory.
3147 * minor incompatible change: a NAMED clause in the extended form of
3148 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3149 reason for the previous behaviour is unclear.
3150 * more systematization and improvement of CLOS and MOP conformance
3151 in PCL (thanks to Gerd Moellman and Pierre Mai):
3152 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3154 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3155 primary methods with no specializers;
3156 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3158 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3159 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3160 FORWARD-REFERENCED-CLASSes; error reporting on
3161 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3163 ** SXHASH on CLOS instances now uses a slot internal to the
3164 instance to return different numbers on distinct instances,
3165 while preserving the same return value through invocations of
3167 ** DEFMETHOD signals errors when methods with longer incongruent
3168 lambda lists are added to generic functions;
3169 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3170 CLASS, as specified in AMOP;
3171 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3172 on the order returned by the primary method for classes of
3173 class STANDARD-CLASS;
3174 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3175 * fixed some bugs shown by Paul Dietz' test suite:
3176 ** DOLIST puts its body in TAGBODY;
3177 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3179 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3180 value producing form;
3181 ** if more variables are given to PROGV than values, extra
3182 variables are bound and made to have no value;
3183 ** NSUBSTITUTE on list arguments gets the right answer with
3185 ** ELT signals an error of type TYPE-ERROR when the index argument
3186 is not a valid sequence index;
3187 ** LOOP signals (at macroexpansion time) an error of type
3188 PROGRAM-ERROR when duplicate variable names are found;
3189 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3190 ** FUNCALL of special-operators now cause an error of type
3192 ** PSETQ now works as required in the presence of side-effecting
3193 symbol-macro places;
3194 ** NCONC accepts any object as its last argument;
3195 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3197 ** loop-for-as-package does not require a package to be explicitely
3199 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3201 * fixed bug 166: compiler preserves "there is a way to go"
3202 invariant when deleting code.
3203 * fixed bug 172: macro lambda lists with required arguments after
3204 &REST arguments now cause an error to be signalled. (thanks to
3206 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3207 bug. (thanks to Matthew Danish)
3208 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3210 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3211 arguments are lexically rebound. (thanks to Gerd Moellmann and
3213 * fixed bug 194: error messages are now more informative when there
3214 is no primary method applicable in a call to a generic
3215 function. (thanks to Gerd Moellmann)
3216 * fixed bug in command line argument checking (thanks to Julian
3218 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3219 (thanks to Matthew Danish)
3220 * incremented fasl file version number, because of the
3221 SXHASH-related changes in the layout of CLOS data structures
3223 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3224 * minor incompatible change: The runtime (the Unix executable named
3225 "sbcl") is now much pickier about the .core files it will load.
3226 Essentially it now requires .core files to descend from the same
3227 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3228 as the runtime does. (The intent is to prevent the crashes which
3229 can occur, and which can even be reported as mysterious failures,
3230 when people patch the sources or change the build parameters
3231 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3232 sbcl and .core files.)
3233 * fixed bug: VALUES-LIST is no longer optimized away.
3234 * fixed bug 142: The FFI conversion of C string values to Lisp
3235 string values no longer conses excessively. (thanks to Nathan
3236 Froyd porting Raymond Toy's fix to CMU CL)
3237 * began to systematize and improve MOP conformance in PCL (thanks to
3238 Nathan Froyd, Gerd Moellman and Pierre Mai):
3239 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3241 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3242 ** FINALIZE-INHERITANCE is now called on class finalization;
3243 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3244 argument precedence order.
3245 * fixed bug 202: The compiler no longer fails on functions whose
3246 derived types contradict their declared type.
3247 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3248 so it can be non-toplevel.
3249 * The fasl file version number has changed (because of the new
3250 implementation of DEFMACRO).
3251 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3252 safe code, that any length requirement by their type-specifier
3253 argument is valid. The exceptions to this are described in bug
3255 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3256 functions now check the types of their inputs as required by ANSI.
3257 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3258 introduced symbol is DECLAREd to be SPECIAL.
3259 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3260 * fixed bug: :COUNT argument to sequence functions may be negative
3261 * fixed bug: body of DO-SYMBOLS may contain declarations
3262 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3263 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3264 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3265 symbol macro only once
3266 * fixed printing of call frame when argument list is unavailable
3267 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3268 * compiler no longer signals WARNING on unknown keyword
3271 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3272 * A beta-quality port to the mips architecture running Linux,
3273 based on the old CMUCL backend, has been made. It has been tested
3274 on a big-endian kernel, and works sufficiently well to be able to
3275 rebuild itself; it has not been tested in little-endian mode.
3276 * fixed an inconsistency between gencgc.c and purify.c which made
3277 dumping/loading .core files unreliable
3278 * fixed bug 120a: The compiler now deals correctly with IFs where
3279 the consequent is the same as the alternative, instead of
3280 misderiving the return type. (thanks to Alexey Dejneka)
3281 * fixed bug 113: Logical pathnames are now dumpable (the logical
3282 host is resolved at load-time, throwing an error if it is not
3284 * fixed bug 174: FORMAT's error message is slightly clearer when a
3285 non-printing character is used in a format directive.
3286 * fixed several bugs in compiler checking of type declarations, i.e.
3287 violations of the Python "declarations are assertions" principle
3288 (thanks to Alexey Dejneka)
3289 * fixed several bugs in PCL's error checking (thanks to Gerd
3291 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3293 * fixed bug in compilation of functions as first class values
3294 (thanks to Antonio Martinez-Shotton)
3295 * The compiler's handling TYPE-ERRORs which it can prove will
3296 inevitably happen at runtime has been cleaned up and corrected
3297 in several ways. (thanks to Alexey Dejneka)
3298 * improved argument type checking for various basic arithmetic
3299 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3300 lavished on them in the past that they can be compiled in many
3301 ways in different special cases
3302 * fixed bug 181: compiler checks validity of user supplied type
3304 * cleaned up code flushing in optimization: Function calls which
3305 should signal errors for safety purposes (e.g. which ANSI says
3306 should signal errors when their arguments are of incorrect type)
3307 are no longer optimized away.
3308 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3309 * incremented fasl file version number, because changes in the
3310 implementation of sequence functions like COERCE caused
3311 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3312 in old inline expansions) to become undefined. (Actually these
3313 changes were later undone, so we might very well be binary
3314 compatible with 0.7.7 after all, but leaving the version number
3315 incremented seemed like the simplest and most conservative
3318 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3319 * An alpha-quality port to the parisc architecture running Linux,
3320 based on the old CMUCL backend, has been made. This, even more so
3321 than the other backends, should be considered still a work in
3322 progress; known problems include that the Linux kernel in 64-bit
3323 mode does not propagate the correct sigcontext structure to
3324 userspace, and consequently SBCL on a parisc64 kernel will not
3326 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3327 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3328 suppressed.) Also now that the compiler is looking at declarations
3329 in the environment, it checks optimization declarations as well,
3330 and suppresses inlining when (> DEBUG SPEED).
3331 * More fixes have been made to treatment of floating point exception
3332 treatment and other Unix signals. In particular, floating point
3333 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3334 * The detection and handling of control stack exhaustion (infinite
3335 or very deeply nested recursion) has changed. Stack exhaustion
3336 detection is now done by write-protecting pages at the OS level
3337 and applies at all optimization settings; when found, a
3338 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3339 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3340 be caught using IGNORE-ERRORS.
3341 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3342 correctly when transforming recursive LABELS functions to LETs.
3343 (thanks to Alexey Dejneka)
3344 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3345 that are names of constants or global variables.
3346 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3347 alien routines with docstrings.
3348 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3349 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3351 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3352 (thanks to Eric Marsden)
3353 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3354 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3355 * Bug fix: The SPARC backend can now compile functions involving
3356 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3357 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3358 to a functions expecting a PATHNAME-DESIGNATOR.
3359 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3360 lambda lists. (thanks to Alexey Dejneka)
3361 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3362 functions so that EXPORTing the name of the class doesn't cause
3363 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3364 to Antonio Martinez for reporting this)
3365 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3366 constant-folded without failing an assertion. (thanks to Einar
3367 Floystad Dorum for reporting this)
3368 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3369 types are now dealt with more correctly by the compiler.
3370 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3371 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3372 behaviour analogous to RENAME-FILE. This puts its behaviour more
3373 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3375 * The fasl file version number has changed again. (because of the
3376 bug fix involving the names of PCL MAKE-INSTANCE functions)
3378 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3379 * bug fix: Floating point exceptions are treated much more
3380 consistently on the x86/Linux and PPC/Linux platforms.
3381 * Array initialization with :INITIAL-ELEMENT is now much faster for
3382 cases when the compiler cannot open code the array creation, but
3383 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3384 array accesses have also seen a speed increase.
3385 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3386 specified. (This was at the root of some bad interactions between
3387 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3389 * bug fix: Internal error arguments for undefined functions are now
3390 computed correctly on the PPC/Linux platform.
3391 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3392 Raymond Toy's patch for CMU CL)
3393 * Support for the Solaris 9 operating environment has been included
3394 (thanks to Daniel Merritt)
3395 * A very ugly but hopefully complete draft of the missing FFI chapter
3396 of the manual has been created by reformatting the corresponding
3397 CMU CL manual chapter into (currently very ugly and incoherent)
3398 DocBook and bringing it up to date for SBCL behavior. Thus, the
3399 manual is now essentially complete, at least by my extreme
3400 once-and-only-once standards, whereby it's acceptable to refer to
3401 the doc strings of SB-EXT functions as the primary documentation.
3402 * The fasl file version number has changed again, due to cleanup of
3403 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3404 is no longer a static symbol.)
3406 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3407 * SBCL now builds with OpenMCL (version 0.12) as the
3408 cross-compilation host; also, more progress has been made toward
3409 bootstrapping under CLISP.
3410 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3412 * bug 158 fixed: The compiler can now deal with integer loop
3413 increments different from 1; fixing this turned out also to fix
3415 * bug 169 fixed: no more bogus warnings about using lexical bindings
3416 despite the presence of perfectly good SPECIAL declarations (thanks
3417 to David Lichteblau)
3418 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3419 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3420 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3422 * bug 180 fixed: Method combination specifications no longer ignore
3423 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3424 * bug fix: Structure type predicate functions now check their argument
3425 count as they should.
3426 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3427 correctly. (thanks to Pierre Mai)
3428 * minor incompatible change: The --noprogrammer option is deprecated
3429 in favor of the new --disable-debugger option, which is very similar.
3430 (The major difference is that it takes effect at a slightly different
3431 time at startup, causing handling of errors in --sysinit and
3432 --userinit files will be affected differently.) The
3433 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3434 been added to allow this functionality to be controlled from ordinary
3435 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3436 maintainers, who might want to run non-interactive scripts to
3437 build SBCL cores which will later be used interactively.)
3438 * minor incompatible change: The LOAD function no longer, when given
3439 a wild pathname to load, loads all files matching that pathname.
3440 Instead, an error of type FILE-ERROR is signalled.
3442 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3443 * bug 147 fixed: The compiler preserves its block link/count
3444 invariants more correctly now so that it doesn't crash. (thanks
3446 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3448 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3449 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3450 no-value-for-this-character as NIL (as specified by ANSI).
3451 * HOST-NAMESTRING on physical pathnames now returns a string that is
3452 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3453 (thanks to Christophe Rhodes)
3454 * The Alpha port handles icache flushing more correctly. (thanks to
3456 * More progress has been made toward bootstrapping under CLISP. (thanks
3457 to Christophe Rhodes)
3458 * The fasl file format has changed again, because dynamic loading
3459 on OpenBSD (which has non-ELF object files) motivated some cleanups
3460 in the way that foreign symbols are transformed and passed around.
3461 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3462 is no longer treated as whitespace by the reader, but instead as
3463 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
3464 |A
\x7fB|, instead of A as it used to.
3466 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3467 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3468 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3469 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3470 this as of 0.7.1.45, but was left out of the previous news section
3471 (thanks to Dan Barlow)
3472 * SBCL now runs on the Solaris operating system on SPARC architectures
3473 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3474 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3475 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3476 * SPARC backend cleanups, allowing builds of cores optimized for V8
3477 and V9 SPARCS, and also emission of code targeted to a particular
3478 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3480 * SBCL is closer to bootstrapping under CLISP, thanks to various
3481 fixes by Christophe Rhodes.
3482 * The fasl file format has changed again, to allow the compiler's
3483 INFO database to support symbol macros.
3484 * The user manual (in doc/) is formatted into HTML more nicely.
3485 (thanks to coreythomas)
3486 * The system is smarter about SUBTYPEP relationships, especially
3487 those involving NOT types (including types such as ATOM which are
3488 represented internally using NOT types). Thus SUBTYPEP is less
3489 likely to return (VALUES NIL NIL) in general, and in particular
3490 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3492 * The fasl file format has changed again, because the internal
3493 representation of types now includes a new slot to support the new
3494 SUBTYPEP-of-NOT-types logic.
3495 * (not a change in the main branch of SBCL, but a related prototype
3496 which can hopefully be merged into the main branch of SBCL in the
3497 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3498 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3499 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3500 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3501 dispatch macro character combinations. (thanks to Alexey Dejneka)
3502 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3503 that superficially look like logical namestrings correctly.
3504 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3506 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3507 default supplied-p) for &optional and &key arguments. (thanks to
3510 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3511 * incompatible change: The compiler is now less aggressive about
3512 tail call optimization, doing it only when (> SPACE DEBUG) or
3513 (> SPEED DEBUG). (This is an incompatible change because there are
3514 programs which relied on the old CMU-CL-style behavior to optimize
3515 away their unbounded recursion which will now die of stack overflow.)
3516 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3517 for non-GENCGC systems has been increased to 20M (since that
3518 seems much closer to the likely performance optimum for modern
3519 systems than the old 4M value was)
3520 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3521 and *DEBUG-PRINT-LEVEL*
3522 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3523 of CMU CL's support for SPARC, and various endianness and other
3524 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3525 * new syntactic sugar for the Unix command line: --load foo.bar is now
3526 an alternate notation for --eval '(load "foo.bar")'.
3528 ** The system now detects stack overflow and handles it gracefully,
3529 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3530 optimization settings. (This is a good thing in general, and
3531 its introduction in this version should be particularly timely
3532 for anyone whose code fails because of suppression of tail
3534 ** The system now hunts for the C variable "environ" in a more
3535 devious way, to avoid segfaults when the C library version differs
3536 between compile time and run time. (thanks to Christophe Rhodes)
3537 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3538 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3539 ** The compiler no longer issues bogus style warnings for undefined
3540 classes in the same source file as the DEFCLASSes which defined
3541 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3543 ** fixes in CONDITION class precedence list for undefined function
3544 errors (thanks to Alexei Dejneka)
3545 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3546 correctly. (thanks to Dan Barlow)
3547 ** portability fixes aiming at bootstrapping under CLISP (thanks
3548 to Dave McDonald and Christophe Rhodes)
3549 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3550 ** fixes in type translation and and type inference (thanks to
3552 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3553 ** various fixes in the new ports (thanks to Dan Barlow)
3554 * several changes related to debugging:
3555 ** suppression of tail recursion, as noted above
3556 ** stack overflow detection, as noted above
3557 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3558 is now the default. (For some time encapsulation has been more
3559 reliable than the breakpoint-based :ENCAPSULATE NIL
3560 implementation, at least on X86 systems; and I just noticed that
3561 encapsulation also seems closer to the spirit of the ANSI
3564 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3566 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3567 up properly again. (There was a packaging bug in 0.7.0 which
3568 left their definitions in SB-SYS::LOAD-FOREIGN and
3569 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3570 vital for most things which interface to C-level interfaces,
3571 like extensions working with sockets or databases or
3572 Perl-compatible regexes or whatever, and the need to fix
3573 this bug is the main reason that 0.7.1 was released so
3575 ** DEFGENERIC is now choosier about the methods it redefines, so that
3576 reLOADing a previously-LOADed file containing DEFGENERICs does
3577 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3578 cycle now works as it should. (thanks to Alexey Dejneka)
3579 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3580 fixed by Christophe Rhodes. (He actually submitted this patch
3581 months ago, and I delayed until after 0.7.0.)
3582 ** Bug 111 (internal compiler confusion about runtime checks on
3583 FUNCTION types) was fixed by Alexey Dejneka.
3584 * Some internal cleanups (getting rid of variables which aren't
3585 needed now that the byte interpreter is gone) caused the fasl
3586 file format number to change again.
3588 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3589 * major incompatible change: The default fasl file extension, i.e. the
3590 default extension for files produced by COMPILE-FILE, has changed
3591 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3593 ** There are many changes in the implementation of the compiler.
3594 SBCL is now essentially a compiler-only implementation of ANSI
3595 Common Lisp. EVAL still "interprets" a few special cases, but
3596 almost all the interesting cases are handled by creating
3597 a LAMBDA expression, calling COMPILE on it, then calling
3598 FUNCALL on the result.
3599 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3600 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3601 Since the code is newer, there might still be some new bugs
3602 (though not as many as before Martin Atzmueller's fixes:-). But
3603 the new code is substantially simpler and clearer, and hopefully
3604 any remaining bugs will be simpler, less fundamental, and more
3605 fixable then the bugs in the old code.
3606 ** The revised compiler is still a little unsteady on its feet.
3608 *** The debugging information it produces (particularly the names
3609 of FUNCTION objects) is sometimes much less useful than what
3610 the old compiler produced.
3611 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3612 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3613 within a MACROLET) has been temporarily weakened.
3614 ** There are new compiler optimizations for various functions:
3615 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3616 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3617 *** the math functions TRUNCATE, FLOOR, and CEILING
3618 *** the function-of-all-trades COERCE
3619 Mostly these should be transparent, but there's one
3620 potentially-annoying problem (bug 117): when the compiler
3621 inline-expands a function and does type analysis on the result,
3622 it can create control paths which have type mismatches, and
3623 when it can't prove that those control paths aren't taken,
3624 it will issue WARNINGs about the type mismatches. This is
3625 a particular problem in practice for the new sequence functions.
3626 It's not clear how this should be fixed, and for now, a
3627 workaround is given in the entry for 117 in the BUGS file.
3628 ** (Because of the interaction between the two previous items --
3629 occasional inlining problems and new inline expansions -- some
3630 of the new sequence function optimizations won't really kick in
3631 completely until debugging information, and then inlining, are
3632 straightened out in some future version.)
3633 * minor incompatible changes:
3634 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3635 DIRECTORY no longer implicitly promotes NIL slots of its
3636 pathname argument to :WILD. In particular, when you ask for the
3637 contents of a directory (which you used to be able to do without
3638 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3639 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3640 ** changes in behavior that ANSI explicitly defines to be
3641 implementation dependent:
3642 *** The new compiler-only implementation still conforms with ANSI,
3643 but acts a little different than before. Besides the obvious
3644 changes in performance tradeoffs (that the cost per form passed
3645 to EVAL has gone up, and the cost per form executed by EVAL
3646 has gone down), the behavior of the system changes a little
3647 because there are no longer any interpreted function objects.
3648 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3649 e.g. doing COMPILE on the output of interactive DEFUN is
3651 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3653 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3654 has changed from (:CL) to NIL.
3655 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3656 e.g. #\Newline and #\Tab, don't have names specified in the
3657 ANSI Common Lisp standard, is now based on their ASCII symbolic
3658 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3659 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3660 are no longer used for output.
3661 ** changes in internal implementation constants:
3662 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3663 4 million. (If your application spends a lot of time GCing and
3664 you have a lot of RAM, you might want to experiment with
3665 increasing it even more.)
3666 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3667 However, almost all old code should still continue to work without
3668 immediate update, as SB-C-CALL is now a (deprecated) nickname
3670 ** Old operator names in the style DEF-FOO are now deprecated in
3671 favor of new corresponding names DEFINE-FOO, for consistency with
3672 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3673 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3674 internal symbols, but a few supported extensions like
3675 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3676 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3677 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3678 etc. as you get deeper into recursive calls to the debugger
3679 command loop, instead of the old "5]", "5]]", "5]]]"
3680 sequence. (I was motivated to do this when squabbles between
3681 ILISP and SBCL left me very deeply nested in the debugger. In the
3682 short term, this change will probably provoke more ILISP/SBCL
3683 squabbles, but hopefully it will be an improvement in the long run.)
3684 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3685 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3686 function, since declaiming return types involving aliens is
3687 (1) annoyingly messy to do by hand and (2) vital to efficient
3688 compilation of code which calls such functions.
3689 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3690 longer reexported by the SB-EXT package. They're solely useful
3691 for alien code, so it seems more logical that you should get
3692 them from the SB-ALIEN package, not in SB-EXT.
3693 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3694 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3695 features. Instead, the code that they used to control is always
3696 built into the system.
3697 * many other bug fixes
3698 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3699 advantage of the new EVAL-WHEN stuff and to clean them up in
3700 general, and they are now more ANSI-compliant in a number of
3701 ways. Martin Atzmueller is responsible for a lot of this.
3702 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3704 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3705 *** correct ERROR type for various file operations
3706 *** some fixes for Lisp streams
3707 *** DEFMETHOD syntax checking
3708 *** changing old weird representation of debug information as
3709 strings (which, among their other deficiencies, don't transform
3710 correctly when you rename packages, and don't change their
3711 print representation when you change things like *PACKAGE*
3712 and *PRINT-LENGTH*) to symbols and lists of symbols
3713 He also made several improvements and fixed several bugs in DESCRIBE.
3714 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3716 *** misbehavior of WRITE-STRING/WRITE-LINE
3717 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3718 and several other LOOP problems as well
3719 *** DIRECTORY when similar filenames are present
3720 *** DEFGENERIC with :METHOD options
3721 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3722 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3723 *** argument ordering in FIND with :TEST option
3724 *** mishandled package designator argument in APROPOS-LIST
3725 *** various problems in the backquote readmacro
3726 *** a bug in APROPOS
3727 *** probably some others that I'm not describing very well here,
3728 since the CVS log documents them by reference to sbcl-devel
3729 messages, and the SourceForge archives aren't working well.:-(
3730 ** Dan Barlow improved the Alpha port (and is making progress on the
3731 PPC port, for those of you who think different).
3732 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3733 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3734 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3735 continues to work on the SPARC port (for those of you in a position
3736 to look down upon our little PC-compatible boxes from a great height).
3737 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3738 and uses that copy, rather than the current dynamic value, when
3739 it's trying to decide whether to truncate output. Thus e.g.
3740 (let ((*print-lines* 50))
3741 (pprint-logical-block (stream nil)
3743 (let ((*print-lines* 8))
3744 (print (aref possiblybigthings i) stream)))))
3745 should now truncate the logical block only at 50 lines, instead of
3746 often truncating it at 8 lines, as it did before.
3747 * The doc/cmucl/ directory, containing old CMU CL documentation
3748 from the time of the fork, is no longer part of the base system.
3749 SourceForge has shut down its anonymous FTP service, and with it
3750 my original plan for distributing the old CMU CL documentation
3751 there. For now, if you need these files you can download an old
3752 SBCL source release and extract them from it.
3753 * The fasl file version number changed again, for dozens of reasons,
3754 some of which are apparent above.
3756 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3757 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3758 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3759 patch, so that DISASSEMBLE output is much nicer.
3760 * The code in the SB-PROFILE package now seems reasonably stable.
3761 I still haven't decided what the final interface should look like
3762 (I'd like PROFILE to interact cleanly with TRACE, since both
3763 facilities use function encapsulation) but if you have a need
3764 for profiling now, you can probably use it successfully with
3765 the current CMU-CL-style interface.
3766 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3767 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3768 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3769 link now returns the dangling link itself, and for similar
3770 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3771 link itself. (In these cases the old code signalled an error and
3772 looped endlessly, respectively.) Thus, DIRECTORY now works even
3773 in the presence of dangling and cyclic symbolic links.
3774 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3775 is now a supported extension again, since the consensus on
3776 sbcl-devel was that it can be useful for ordinary development
3777 work, not just for debugging SBCL itself.
3778 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3779 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3780 that currently-defined functions might be redefined later with
3781 different return types.
3782 * Hash tables can be printed readably, as inspired by CMU CL code
3783 of Eric Marsden and SBCL code of Martin Atzmueller.
3784 * better error handling in CLOS method combination, thanks to
3785 Martin Atzmueller porting Pierre Mai's CMU CL patches
3786 * more overflow fixes for >16Mbyte I/O buffers
3787 * A bug in READ has been fixed, so that now a single Ctrl-D
3788 character suffices to cause end-of-file on character streams.
3789 In particular, now you only need one Ctrl-D at the command
3790 line (not two) to exit SBCL.
3791 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3793 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3794 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3795 does the right thing.
3796 * The implementation of some type tests, especially for CONDITION
3797 types, is now tidier and maybe faster, due to CMU CL code
3798 originally by Douglas Crosher, ported by Martin Atzmueller.
3799 * Some math functions have been fixed, and there are new
3800 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3801 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3802 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3803 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3804 likely to be built into sbcl-0.7.0.)
3805 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3806 CL, ported to SBCL by Martin Atzmueller)
3807 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3808 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3809 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3810 * There's a new slam.sh hack to shorten the edit/compile/debug
3811 cycle for low-level changes to SBCL itself, and a new
3812 :SB-AFTER-XC-CORE target feature to control the generation of
3813 the after-xc.core file needed by slam.sh.
3814 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3815 COMPILE-FILE is no longer supported, so that now every function
3816 gets an entry point, so that block compilation looks a little
3817 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3818 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3819 returns the number of bytes consed since the system started,
3820 rather than the number consed since the first time the function
3821 was called. (The new definition parallels ANSI functions like
3822 CL:GET-INTERNAL-RUN-TIME.)
3823 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3824 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3825 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3826 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3827 * Fasl file version numbers are now independent of the target CPU,
3828 since historically most system changes which required version
3829 number changes have affected all CPUs equally. Similarly,
3830 the byte fasl file version is now equal to the ordinary
3833 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3834 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3835 is no longer recognized. I apologize for this, because it was
3836 listed in SB-EXT as a supported extension, but I found that
3837 its existing behavior was poorly specified, as well as incorrectly
3838 specified, and it looked like too much of a mess to straighten it
3839 out. I have enough on my hands trying to get ANSI stuff to work..
3840 * many patches ported from CMU CL by Martin Atzmueller, with
3841 half a dozen bug fixes in pretty-printing and the debugger, and
3842 half a dozen others elsewhere
3843 * fixed bug 13: Floating point infinities are now supported again.
3844 They might still be a little bit flaky, but thanks to bug reports
3845 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3846 as flaky as they were.
3847 * The --noprogrammer command line option is now supported. (Its
3848 behavior is slightly different in detail from what the old man
3849 page claimed it would do, but it's still appropriate under the
3850 same circumstances that the man page talks about.)
3851 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3852 are now supported, and enabled by default. Thus, the compiler can
3853 handle many floating point and complex operations much less
3854 inefficiently. (Thus e.g. you can implement a complex FFT
3856 * The compiler now detects type mismatches between DECLAIM FTYPE
3857 and DEFUN better, and implements CHECK-TYPE more correctly, and
3858 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3859 thanks to patches from Martin Atzmueller.
3860 * various fixes to make the cross-compiler more portable to
3861 ANSI-conforming-but-different cross-compilation hosts (notably
3862 Lispworks for Windows, following bug reports from Arthur Lemmens)
3863 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3864 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3865 fixed thanks to Pierre Mai's CMU CL patches.
3866 * fixes to keep the system from overflowing internal counters when
3867 it tries to use i/o buffers larger than 16M bytes
3868 * fixed bug 45a: Various internal functions required to support
3869 complex special functions have been merged from CMU CL sources.
3870 (When I was first setting up SBCL, I misunderstood a compile-time
3871 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3872 * improved support for type intersection and union, fixing bug 12
3873 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3874 more obscure bugs as well
3875 * some steps toward byte-compiling non-performance-critical
3876 parts of the system, courtesy of patches from Martin Atzmueller
3877 * Christophe Rhodes has made some debian packages of sbcl at
3878 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3879 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3880 stable, but are nonetheless usable. When he's ready, I'd be happy
3881 to add them to the SourceForge "File Releases" section. (And if
3882 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3883 * new fasl file format version number (because of changes in
3884 internal representation of (OR ..) types to accommodate the new
3885 support for (AND ..) types, among other things)
3887 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3888 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3890 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3892 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3893 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3894 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3895 * DESCRIBE now works on structure objects again.
3896 * Most function call argument type mismatches are now handled as
3897 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3898 know whether the function will be redefined before the call is
3899 executed. (The compiler could flag local calls with full WARNINGs,
3900 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3901 it doesn't keep track of enough information to know whether calls
3902 are local in this sense.)
3903 * Compiler output is now more verbose, with messages truncated
3904 later than before. (There should be some supported way for users
3905 to override the default verbosity, but I haven't decided how to
3906 provide it yet, so this behavior is still controlled by the internal
3907 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3908 src/compiler/ir1util.lisp.)
3909 * Fasl file format version numbers have increased again, because
3910 support for the Gray streams extension changes the layout of the
3911 system's STREAM objects.
3912 * The Gray subclassable streams extension now works, thanks to a
3913 patch from Martin Atzmueller.
3914 * The full LOAD-FOREIGN extension (not just the primitive
3915 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3916 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3917 but like most other programs, it defaults to copying the Unix
3918 environment from the original process instead of starting the
3919 new process in an empty environment.
3920 * Extensions which manipulate the Unix environment now support
3921 an :ENVIRONMENT keyword option which doesn't smash case or
3922 do other bad things. The CMU-CL-style :ENV option is retained
3923 for porting convenience.
3924 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3925 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3927 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3929 * A patch from Martin Atzmueller seems to have solved the SIGINT
3930 problem, and as far as we know, signal-handling now works cleanly.
3931 (If you find any new bugs, please report them!)
3932 * The system no longer defaults Lisp source file names to types
3933 ".l", ".cl", or ".lsp", but only to ".lisp".
3934 * The compiler no longer uses special default file extensions for
3935 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3936 seems to expect a single default extension for all compiled code,
3937 and there's no compelling reason to try to stretch the standard
3938 to allow two different extensions.) Instead, byte-compiled files
3939 default to the same extension as native-compiled files.
3940 * Fasl file format version numbers have increased again, because
3941 a rearrangement of internal implementation packages made some
3942 dumped symbols in old fasl files unreadable in new cores.
3943 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3944 many fewer weird special cases.
3945 * Bug #17 (differing COMPILE-FILE behavior between logical and
3946 physical pathnames) has been fixed, and some related misbehavior too,
3947 thanks to a patch from Martin Atzmueller.
3948 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3949 by Tim Moore, ported to SBCL by Martin Atzmueller.
3950 * Martin Atzmueller fixed several filesystem-related problems,
3951 including bug #36, in part by porting CMU CL patches, which were
3952 written in part by Paul Werkowski.
3953 * More compiler warnings in src/runtime/ are gone, thanks to
3954 more patches from Martin Atzmueller.
3955 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3958 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3960 * DESCRIBE now works on CONDITION objects.
3961 * The debugger now handles errors which arise when trying to print
3962 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3964 * The build system now uses an additional file, customize-target-features.lisp,
3965 to allow local modifications to the target *FEATURES* list. (The point of
3966 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3967 debugging features enabled, without having to worry about propagating it
3968 into everyone's system when I do a "cvs update".) When no
3969 customize-target-features.lisp file exists, the target *FEATURES* list
3970 should be constructed the same way as before.
3971 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3972 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3973 warn about behavior which is undefined under the ANSI spec. Note: This
3974 is specified by ANSI, but it's not very popular with programmers.
3975 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3976 macro in the SBCL sources for an example of a workaround which you
3977 might use to make portable ANSI-standard code which does what you want.
3978 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3979 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3980 when it's used as a non-toplevel form. (This is required in order
3981 to implement the DEFCONSTANT-EQX macro.)
3982 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3983 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3984 funny things, due to bugs in the implementation of EVAL-WHEN
3985 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3986 non-toplevel DEFCONSTANTs are uncommon.)
3987 * The core file version number and fasl file version number have been
3988 incremented, because the old noncompliant DEFCONSTANT behavior involved
3989 calling functions which no longer exist, and because I also took the
3990 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3991 * fixed bug 1 (error handling before read-eval-print loop starts), and
3992 redid debugger restarts and related debugger commands somewhat while
3994 ** The QUIT debugger command is gone, since it did something
3995 rather different than the SB-EXT:QUIT command, and since it never
3996 worked properly outside the main toplevel read/eval/print loop.
3997 Invoking the new TOPLEVEL restart provides the same functionality.
3998 ** The GO debugger command is also gone, since you can just invoke
3999 the CONTINUE restart directly instead.
4000 ** The TOP debugger command is also gone, since it's redundant with the
4001 FRAME 0 command, and since it interfered with abbreviations for the
4003 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4005 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4006 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4007 some porting work by Martin Atzmueller)
4008 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4009 with a boatload of patches which he ported to SBCL. Now that those
4011 ** The system tries to make sure that its low-priority messages
4012 are prefixed by semicolons, to help people who like to use
4013 syntax highlighting in their ILISP buffer. (This patch
4014 was originally due to Raymond Toy.)
4015 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4016 patches originally written by Raymond Toy.
4017 ** The compiler understands coercion between single-value and
4018 multiple-VALUES type expressions better, getting rid of some very
4019 weird behavior, thanks to patches originally by Robert MacLachlan
4020 and Douglas Crosher.
4021 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4022 lambda lists, thanks to a patch originally by Pierre Mai.
4023 ** The system no longer bogusly warns about "abbreviated type
4025 ** The compiler gets less confused by inlining and RETURN-FROM,
4026 thanks to some patches originally by Tim Moore.
4027 ** The system no longer hangs when dumping circular lists to fasl
4028 files, thanks to a patch originally from Douglas Crosher.
4029 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4030 undefined function error.
4031 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4032 in structure slot initforms) for now, documented workaround instead:-|
4033 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4034 * fixed bug 5: added stubs for various Gray stream functions called
4035 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4036 installed, at least appropriate type errors are generated
4037 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4038 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4039 consistently in DEFMETHOD forms.
4040 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4041 it doesn't seem to affect SBCL after all
4042 * The C runtime system now builds with better optimization and many
4043 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4045 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4047 * The system is now under CVS at SourceForge (instead of the
4048 CVS repository on my home machine).
4049 * The new signal handling code has been tweaked to treat register
4050 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4051 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4052 downstream, e.g. in debug-int.lisp, has implicit dependencies
4053 on the unsignedness of integer representation of machine words,
4054 and that caused the system to bomb out with infinite regress
4055 when trying to recover from type errors involving signed values,
4056 e.g. (BUTLAST '(1 2 3) -1).)
4057 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4058 (This was one of the bugs Peter Van Eynde reported back in July.)
4059 * The system now uses code inspired by Colin Walters' O(N)
4060 implementation of MAP (from the cmucl-imp@cons.org mailing
4061 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4062 inline the MAP operation, and there is more than one
4063 sequence argument to the MAP call (so that it can't just
4064 do ETYPECASE once and for all based on the type of the
4065 single sequence argument). (The old non-inline implementation
4066 of the general M-argument sequence-of-length-N case required
4067 O(M*N*N) time when any of the sequence arguments were LISTs.)
4068 * The QUIT :UNIX-CODE keyword argument has been renamed to
4069 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4070 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4072 * Raymond Wiker's patches to port dynamic loading from Linux to
4073 FreeBSD have been added.
4074 * The BUGS file is now more nearly up to date, thanks in large part
4075 to Martin Atzmueller's review of it.
4076 * The debugger now flushes standard output streams before it begins
4077 its output ("debugger invoked" and so forth).
4078 * The core version number and fasl file version number have both
4079 been incremented, because of incompatible changes in the layout
4081 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4082 used to not be called for a saved Lisp image.)
4083 * Martin Atzmueller's version of a patch to fix a compiler crash,
4084 as posted on sbcl-devel 13 September 2000, has been installed.
4085 * Instead of installing Martin Atzmueller's patch for the
4086 compiler transform for SUBSEQ, I deleted the compiler transform,
4087 and transforms for some similar consing operations.
4088 * A bug in signal handling which kept TRACE from working on OpenBSD
4090 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4091 away by constant folding
4092 * The system now defines its address space constants in one place
4093 (in the Lisp sources), and propagates them automatically elsewhere
4094 (through GENESIS and the sbcl.h file). Therefore, patching the
4095 address map is less unnecessarily tedious and error-prone. The
4096 Lisp names of address space constants have also been systematized.
4097 * CVS tags like dollar-Header-dollar have been removed from
4098 the sources, because they have never saved me trouble and
4099 they've been source of trouble working with patches and other
4100 diff-related operations.
4101 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4102 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4104 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4106 * The system has been ported to OpenBSD.
4107 * The system now compiles with a simple "sh make.sh" on the systems
4108 that it's supported on. I.e., now you no longer need to tweak
4109 text in the target-features.lisp-expr and symlinks in src/runtime/
4110 by hand, the make.sh takes care of it for you.
4111 * The system is no longer so grossly inefficient when compiling code
4112 involving vectors implemented as general (not simple) vectors (VECTOR T),
4113 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4114 which dares to use the various sequence functions on non-simple
4115 vectors, takes less of a performance hit.
4116 * There is now a primitive type predicate VECTOR-T-P
4117 to test for the (VECTOR T) type, so that e.g.
4118 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4119 can now be compiled with some semblance of efficiency. (The old code
4120 turned the type declaration into a full call to %TYPEP at runtime!)
4121 * AREF on (VECTOR T) is still not fast, since it's still compiled
4122 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4123 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4124 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4125 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4126 without making full calls to SUBTYPEP at runtime.
4127 (Some analogous efficiency issues for non-simple vectors specialized to
4128 element types other than T, or for non-simple multidimensional arrays,
4129 have not been addressed. They could almost certainly be handled the
4130 same way if anyone is motivated to do so.)
4131 * The changes in array handling break binary compatibility, so
4132 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4133 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4134 instead of (VALUES T T).
4135 * By following the instructions that Dan Barlow posted to sbcl-devel
4136 on 2 July 2000, I was able to enable primitive dynamic object
4137 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4138 functionality is not implemented (since it calls ld to resolve
4139 library references automatically, requiring RUN-PROGRAM for its
4140 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4141 try to resolve library references) is now supported.
4142 * The system now flushes the standard output streams when it terminates,
4143 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4144 them at several other probably-convenient times, e.g. in each pass of
4145 the toplevel read-eval-print loop, and after evaluating a form given
4146 as an "--eval" command-line option. (These changes were motivated by a
4147 discussion of stream flushing issues on cmucl-imp in August 2000.)
4148 * The source transform for TYPEP of array types no longer assumes
4149 that an array whose element type is a not-yet-defined type
4150 is implemented as an array of T, but instead punts, so that the
4151 type will be interpreted at runtime.
4152 * There is now some support for cross-compiling in make.sh: each of
4153 the phases of make.sh has its own script. (This should be transparent
4154 to people doing ordinary, non-cross-compile builds.)
4155 * Since my laptop doesn't have hundreds of megabytes of memory like
4156 my desktop machine, I became more motivated to do some items on
4157 my to-do list in order to reduce the size of the system a little:
4158 ** Arrange for various needed-only-at-cold-init things to be
4159 uninterned after cold init. To support this, those things have
4160 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4161 symbols with such names are now uninterned after cold init).
4162 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4163 fasl files for cold load.
4164 ** Remove the old compiler structure pooling code (which used to
4165 be conditional on the target feature :SB-ALLOC) completely.
4166 ** Redo the representation of some data in cold init to be more compact.
4167 (I also looked into supporting byte compiled code at bootstrap time,
4168 which would probably reduce the size of the system a lot, but that
4169 looked too complicated, so I punted for now.)
4170 * The maximum signal nesting depth in the src/runtime/ support code has
4171 been reduced from 4096 to 256. (I don't know any reason for the very
4172 large old value. If the new smaller value turns out to break something,
4173 I'll probably just bump it back up.)
4174 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4176 * Many, many bugs reported by Peter Van Eynde have been added to
4177 the BUGS list; some have even been fixed.
4178 * While enabling dynamic object file loading, I tried to make the
4179 code easier to understand, renaming various functions and variables
4180 with less ambiguous names, and changing some function calling
4181 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4182 * While trying to figure out how to do the OpenBSD port, I tried to
4183 clean up some of the code in src/runtime/. In particular, I dropped
4184 support for non-POSIX signal handling, added various comments,
4185 tweaked the code to reduce the number of compilation warnings, and
4186 renamed some files to increase consistency.
4187 * To support the new automatic configuration functionality in make.sh,
4188 the source file target-features.lisp-expr has been replaced with the
4189 source file base-target-features.lisp-expr and the machine-generated
4190 file local-target-features.lisp-expr.
4191 * fixed a stupid quoting error in make.sh so that using CMU CL
4192 "lisp -batch" as cross-compilation host works again
4194 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4196 * DESCRIBE no longer tries to call itself recursively to describe
4197 bound/fbound values, so that it no longer fails on symbols which are
4198 bound to themselves (like keywords, T, and NIL).
4199 * DESCRIBE now works on generic functions.
4200 * The printer now prints less-screwed-up representations of closures
4201 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4202 * A private symbol is used instead of the :EMPTY keyword previously
4203 used to mark empty slots in hash tables. Thus
4204 (DEFVAR *HT* (MAKE-HASH-TABLE))
4205 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4206 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4207 now does what ANSI says that it should. (You can still get
4208 similar noncompliant behavior if bang on the hash table
4209 implementation with all the symbols you get back from
4210 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4211 This breaks binary compatibility, since tests for equality to
4212 :EMPTY are wired into things like the macroexpansion of
4213 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4215 * There's now a minimal placeholder implementation for CL:STEP,
4216 as required by ANSI.
4217 * An obscure bug in the interaction of the normal compiler, the byte
4218 compiler, inlining, and structure predicates has been patched
4219 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4220 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4222 * Missing ordinary arguments in a macro call are now detected even
4223 when the macro lambda list contains &KEY or &REST.
4224 * The debugger no longer complains about encountering the top of the
4225 stack when you type "FRAME 0" to explicitly instruct it to go to
4226 the top of the stack. And it now prints the frame you request even
4227 if it's the current frame (instead of saying "You are here.").
4228 * As specified by ANSI, the system now always prints keywords
4229 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4231 * The default initial SIZE of HASH-TABLEs is now smaller.
4232 * Type information from CLOS class dispatch is now propagated
4233 into DEFMETHOD bodies, so that e.g.
4234 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4236 is now basically equivalent to
4237 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4238 (DECLARE (TYPE SINGLE-FLOAT X))
4240 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4241 operation, without having to do run-time type dispatch.
4242 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4243 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4244 * Since I don't seem to be making big file reorganizations very often
4245 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4246 is overflowing my ability to conveniently back them up), I've finally
4247 checked the system into CVS. (The CVS repository is on my home system,
4248 not at SourceForge -- putting it on SourceForge might come later.)
4249 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4250 high-level GC-NOTIFY-FOO functions send their output. (There's
4251 still very little control of where low-level verbose GC functions
4252 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4253 less than it used to -- the GC-NOTIFY-FOO functions are now under
4254 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4255 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4256 in only one place in the source code, and propagates it automatically
4257 everywhere that it's needed. Thus e.g. when I bump the version from
4258 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4259 * The C source files now include boilerplate legalese and documentation
4260 at the head of each file (just as the Lisp source files already did).
4261 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4262 to his page will be replaced with a link to his new CLiki service.
4264 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4266 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4267 * The build process now looks for GNU make under the default name "gmake",
4268 instead of "make" as it used to. If GNU make is not available as "gmake"
4269 on your system, you can change this default behavior by setting the
4270 GNUMAKE environment variable.
4271 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4272 can build without error under CMU CL.
4274 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4276 * There is now a partial SBCL user manual (with some new text and some
4277 text cribbed from the CMU CL manual).
4278 * The beginnings of a profiler have been added (starting with the
4279 CMU CL profiler and simplifying and cleaning up). Eventually the
4280 main interface should be through the TRACE macro, but for now,
4281 it's still accessed through vaguely CMU-CL-style functions and macros
4282 exported from the package SB-PROFILE.
4283 * Some problems left over from porting CMU CL to the new
4284 cross-compilation bootstrap process have been cleaned up:
4285 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4286 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4287 part when getting rid of the compiler *BACKEND* stuff.)
4288 ** The value of *NULL-TYPE* was screwed up, because it was
4289 being initialized before the type system knew the final
4290 definition of the 'NULL type. This screwed up several key
4291 optimizations in the compiler, causing inefficiency in all sorts
4292 of places. (I found it because I wanted to understand why
4293 GET-INTERNAL-RUN-TIME was consing.)
4294 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4295 PROCLAIM FTYPE information. Unfortunately this broke binary
4296 compatibility again, since now the forms output by DEFGENERIC
4297 to refer to functions which didn't exist in 0.6.3.
4298 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4299 can use the new (as of 0.6.3) transform for SOME into MAP into
4301 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4302 values to (INTEGER 0 1000000), so that the time code will no longer
4303 occasionally get blown up by Linux returning 1000000 microseconds
4304 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4305 its output conform to the ANSI spec. (Alas, this makes its output
4306 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4307 * A full call to MAP NIL with a single sequence argument no longer conses.
4308 * fixes to problems pointed out by Martin Atzmueller:
4309 * The manual page no longer talks about multiprocessing as though
4310 it were currently supported.
4311 * The ILISP support patches have been removed from the distribution,
4312 because as of version 5.10.1, ILISP now supports SBCL without us
4313 having to maintain patches.
4314 * added a modified version of Raymond Toy's recent CMU CL patch for
4315 EQUALP comparison of HASH-TABLE
4317 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4319 * The system still can't cross-compile itself with
4320 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4321 entails), but at least it can compile more of itself that way
4322 than it used to be able to, and various buglets which were uncovered
4323 by trying to cross-compile itself that way have now been fixed.
4324 * This release breaks binary compatibility again. This time
4325 at least I've incremented the FASL file format version to 2, so that the
4326 problem can be detected reliably instead of just causing weird errors.
4327 * various new style warnings:
4328 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4329 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4330 ** using the lexical binding of a variable named in the *FOO* style
4331 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4332 as specified by ANSI.
4333 * *RANDOM-STATE* is no longer automatically initialized from
4334 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4335 default behavior of the system is to repeat its behavior every time
4336 it's run. If you'd like to change this behavior, you can always
4337 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4338 old convention there was no comparably easy way to get the system to
4339 repeat its behavior every time it was run.
4340 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4341 FTYPE declarations has been removed, in favor of their ANSI
4342 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4343 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4344 the types of their sequence arguments can be determined at compile time.
4345 This is done through a new open code expansion for MAP which eliminates
4346 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4347 argument types can be determined at compile time.
4348 * The optimizer now transforms COERCE into an identity operation when it
4349 can prove that the coerced object is already of the correct type. (This
4350 can be a win for machine generated code, including the output of other
4351 optimization transforms, such as the MAP transform above.)
4352 * Credit information has been moved from source file headers into CREDITS.
4353 * Source file headers have been made more standard.
4354 * The CASE macro now compiles without complaining even when it has
4357 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4359 * (Note that the way that the PCL macroexpansions were rewritten
4360 to accommodate the change in DEFGENERIC below breaks binary
4361 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4362 not run under sbcl-0.6.2. Once we get out of alpha releases,
4363 i.e. hit release 1.0.0, we'll probably try to maintain binary
4364 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4365 and sbcl-1.4.4. Until then, however, it might be fairly common
4366 for maintenance releases to break binary compatibility.)
4367 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4369 * The reporting of unhandled signals has been changed to print some
4370 explanatory text as well as the report form. (Previously only
4371 the report form was printed.)
4372 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4373 it defines, so that the compiler no longer issues undefined function
4374 warnings for compiled-but-not-yet-loaded generic functions.
4375 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4376 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4377 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4378 section of the ANSI spec are supported.
4379 * The "" nickname for the "KEYWORD" package has been removed.
4380 The reader still handles symbol tokens which begin with a package marker
4381 as keywords, but it doesn't expose its mechanism for doing so in the
4382 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4383 * The system now issues STYLE-WARNINGs for contradictory TYPE
4384 proclamations. (Warnings for contradictory FTYPE proclamations would
4385 be nice too, but those can't be done usefully unless the type system
4386 is made smarter about FUNCTION types.)
4387 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4388 systematized, so that "*target-*.lisp is supposed to exist only on the
4389 target and imply that there's a related file which exists on the
4390 host, and *host-*.lisp is supposed to exist only on the host and imply
4391 that there's a related file which exists on the target. This involves a
4392 lot of renaming. Hopefully the acute confusion caused by the renaming
4393 will be justified by the reduction in chronic confusion..
4394 ** runtime-type.lisp -> early-target-type.lisp
4395 ** target-type.lisp -> late-target-type.lisp
4396 ** early-host-format.lisp -> early-format.lisp
4397 ** late-host-format.lisp -> late-format.lisp
4398 ** host-error.lisp -> misc-error.lisp
4399 ** early-error.lisp -> early-target-error.lisp
4400 ** late-error.lisp -> late-target-error.lisp
4401 ** host-defboot.lisp -> early-defboot.lisp
4402 ** code/misc.lisp -> code/target-misc.lisp
4403 ** code/host-misc.lisp -> code/misc.lisp
4404 ** code/numbers.lisp -> code/target-numbers.lisp
4405 ** code/early-numbers.lisp -> numbers.lisp
4406 ** early-host-type.lisp -> early-type.lisp
4407 ** late-host-type.lisp -> late-type.lisp
4408 ** host-typep.lisp -> typep.lisp
4409 ** load.lisp -> target-load.lisp
4410 ** host-load.lisp -> load.lisp
4411 ** host-disassem.lisp -> disassem.lisp
4412 ** host-insts.lisp -> insts.lisp
4413 ** byte-comp.lisp -> target-byte-comp.lisp
4414 ** host-byte-comp.lisp -> byte-comp.lisp
4415 ** host-signal.lisp -> signal.lisp
4416 ** host-defstruct.lisp -> defstruct.lisp
4417 ** late-target-type.lisp -> deftypes-for-target.lisp
4418 Furthermore, several other previously target-only files foo.lisp (e.g.
4419 hash-table.lisp and random.lisp) have been split into a target-and-host
4420 foo.lisp file and a target-only target-foo.lisp file, with their key type
4421 definitions in the target-and-host part, so that the cross-compiler will
4422 know more about target types.
4423 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4424 gone away. In their place are various *BACKEND-FOO* variables
4425 corresponding to the slots of the old structure.
4426 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4427 into the target SBCL has been fixed.
4428 * The chill.lisp system for loading cold code into a running SBCL
4430 * Support for the CMU CL "scavenger hook" extension has been removed.
4431 (It was undocumented and unused in the CMU CL sources that SBCL was
4432 derived from, and stale in sbcl-0.6.1.)
4433 * Various errors in the cross-compiler type system were detected
4434 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4435 (enabling various consistency checks). Many of them were fixed,
4436 but some hard problems remain, so the compiler is back to
4437 running without *TYPE-SYSTEM-INITIALIZED* for now.
4438 * As part of the cross-compiler type system cleanup, I implemented
4439 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4440 * I have started adding UNCROSS calls throughout the type system
4441 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4442 on cross-compiler input files will be able to go away, and various
4444 * CONSTANTP now returns true for quoted forms (as explicitly required
4447 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4449 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4450 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4451 (MAKE-LIST -1). In the longer term, it ought to become true
4452 that declarations are assertions even at SAFETY 1. For now, it's not
4453 quite true even at SAFETY 3, but it's at least more nearly true..
4454 (Note that this change seems to increases the size of the system by
4455 O(5%) and to decrease the speed of the compiler by 20% or more.)
4456 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4457 for the problem of printing dozens of lines of distracting information
4458 about low-level system machinery as part of the top stack frame
4459 on entry to the debugger when an undefined function was called.
4460 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4461 is not reset to COMMON-LISP-USER.
4462 * Compilation of stuff related to dyncount.lisp has been made conditional
4463 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4464 smaller. The various dyncount-related symbols have been moved into
4465 a new "SB-DYNCOUNT" package.
4466 * tty-inspect.lisp has been renamed to inspect.lisp.
4467 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4468 feature has gone away. (When we eventually port to other flavors of
4469 libc and/or Unix, we'll try to make the differences between flavors
4470 invisible at the user level.)
4471 * Various other *FEATURES* tags, and/or their associated conditionals,
4472 have been removed if obsolescent, or given better documentation, or
4473 sometimes given more-mnemonic names.
4475 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4477 * tidied up "make.sh" script
4478 * tidied up system directory structure
4479 * better "clean.sh" behavior
4480 * added doc/FOR-CMUCL-DEVELOPERS
4481 * many many small tweaks to output format, e.g. removing possibly-confusing
4482 trailing #\. character in DESCRIBE-INSTANCE
4483 * (EQUALP #\A 'A) no longer signals an error.
4484 * new hashing code, including EQUALP hashing
4485 * tidied up Lisp initialization and toplevel
4486 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4487 * command line argument processing
4488 * added POSIX-GETENV function to deal with Unix-ish environment variables
4489 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4490 terminating SBCL on EOF
4491 * non-verbose GC by default
4492 * There is no more "sbcl" shell script; the sbcl file is now the C
4493 runtime executable (just like CMU CL).
4494 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4496 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4497 symbol and package information as Lisp native symbol and package objects
4498 instead of strings naming symbols and strings naming packages. This way,
4499 whenever packages are renamed (as in warm init), debug information is
4500 transformed along with everything else.
4501 * tweaked the optimization policy declarations which control the building
4502 of SBCL itself. Now, among other things, the system no longer saves
4503 source location debugging information. (This helps two problems at once
4504 by reducing SBCL size and by keeping SBCL from trying to look for its
4505 sources -- which may not exist -- when reporting errors.)
4506 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4507 debugging and testing purposes
4508 * cleaned up printing, making the printer call PRINT-OBJECT for
4509 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4510 methods, giving nearly-ANSI behavior
4511 * converted almost all special variables to use *FOO* naming convention
4512 * deleted PARSE-TIME functionality, since it can be done portably
4513 * moved some files out of cold init into warm init
4514 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4516 * regularized formatting of source files
4517 * added an install.sh script
4518 * fixed ridiculous memory usage of cross-compiler by making
4519 compiler/alloc.lisp not try to do pooling unless it can hook
4520 itself into the GC of the cross-compilation host. Now the system
4521 builds nicely on my old laptop.
4522 * added :SB-ALLOC in target-features.lisp-expr
4523 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4524 was not implemented)
4525 * re-did condition handling and note reporting in the compiler. Notes
4526 are no longer handled by signalling conditions. Style warnings
4527 and warnings are handled more correctly and reported in such a way
4528 that it's easy to find one or the other in your output (so that you
4529 can e.g. figure out which of many problems caused COMPILE-FILE to
4531 * changed the severity of several compiler warnings from full WARNING
4532 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4533 compiler note reporting so that it doesn't use the condition system
4534 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4535 COMPILE-FILE command)
4536 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4537 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4538 no longer supported, since their implementation was deeply intertwingled
4539 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4540 * removed bogus "support" for compiler macros named (SETF FOO), and
4541 removed the compiler macro for SETF INFO (but only after making a fool
4542 of myself on the cmucl-imp mailing list by posting a bogus patch for
4543 DEFINE-COMPILER-MACRO..)
4544 * Compiled files containing forms which have side effects on the Lisp
4545 reader (such as DEFPACKAGE forms) are now handled more correctly.
4546 (Compiler queuing of top level lambdas has been suppressed by setting
4547 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4548 * deleted various currently-unused source files, e.g. gengc.lisp. They
4549 may be added back at some point e.g. when porting to other architectures,
4550 but until they are it's distracting to distribute them and to try to
4552 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4553 there were so many of them they're just distractions, and UNCROSS is
4554 known to be able to handle the current sources
4555 * moved PROFILE functionality into TRACE, so that it will be clear
4556 how the wrapping and unwrapping of functions when you profile them
4557 interacts with the wrapping and unwrapping of functions when you
4558 trace them. (Actually, the functionality isn't there yet, but at least
4559 the interface specification is there. Hopefully, the functionality will
4560 arrive with some future maintenance release.)
4561 * removed host-oops.lisp
4562 * changed signature of QUIT function to allow UNIX-CODE argument
4563 * fixed READ-SEQUENCE bug
4564 * tweaked verbose GC output so that it looks more like the progress
4565 output that ANSI specifies for functions like LOAD
4566 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4567 * added <http://sbcl.sourceforge.com> to the banner information printed by