1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3 * minor incompatible change: the MSI installer on Windows no longer
4 associates .lisp and .fasl files with the installed SBCL.
5 * minor incompatible change: :UNIX is no longer present in *FEATURES*
6 on Windows. (thanks to Luis Oliviera)
7 * new feature: SB-CLTL2 contrib module now implements
8 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
9 * optimization: scavenging weak pointers is now more efficient,
10 requiring O(1) instead of O(N) per weak pointer to identify
11 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
12 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
13 method bodies using constant slot-names when the first argument is
14 a specializer parameter for the method.
15 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
16 names, when the class of the instance is a direct instance
17 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
18 as slow as the constant slot-name case.)
19 * optimization: member type construction is now O(N) instead
21 * optimization: UNION and NUNION are now O(N+M) for large
22 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
24 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
25 now more readable in environments like Slime which display it.
26 (thanks to Tobias C. Rittweiler)
27 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
28 was able to infer the correct argument type for the object on which
29 the CAS operation was being performed.
30 * bug fix: copy propagation interfered with parallel assignment
31 semantics in local calls. (reported by Paul Khuong)
33 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
34 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
35 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
36 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
38 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
39 and generic function now print the object identity for anonymous
40 instances. (thanks to Attila Lendvai)
41 * enhancement: as an extension to MOP, SBCL now supports SETF of
42 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
43 (thanks to Attila Lendvai)
44 * enhancement: sb-cover has an alternate annotation mode which puts
45 the form annotations at the car of the form, instead of annotating
46 it completely. The benefit of this mode is that it shows better
47 which forms were instrumented by the compiler.
48 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
49 by printer control variables. (reported by Dan Corkill)
50 * bug fix: system leaked memory when delayed output was performed by
51 the OS in smaller chunks then expected. (thanks to David Smith)
52 * bug fix: system leaked memory when file streams were not closed
54 * bug fix: large objects written to slow streams that were modified
55 after the write could end up with the modified state written to
56 the underlying file descriptor.
57 * bug fix: multiple threads operating in parallel on the same stream
58 could cause buffer-overflows.
59 * bug fix: source location information is stored correctly
60 (broken since 1.0.6). This bug would generally show up as the
61 Slime debugger higlighting the wrong form when the sldb-show-source
63 * bug fix: Branch forms are again annotated as branches in the sb-cover
65 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
66 on x86-64. (reported by Gregory Vanuxem)
67 * bug fix: EQUALP could return wrong results for structures with raw
68 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
69 word). (reported by Vjacheslav Fyodorov)
70 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
73 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
74 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
75 atomic compare-and-swap operations on threaded platforms.
76 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
77 allows assining a global minimum value to optimization qualities
78 (overriding proclamations and declarations).
79 * enhancement: closed over variables can be stack-allocated on x86
81 * performance bug fix: GETHASH and (SETF GETHASH) are once again
83 * optimization: slot definition lookup is now O(1). This speeds up
84 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
85 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
86 * optimization: ASSOC and MEMBER can now be open-coded for all
87 combinations of keyword arguments when second argument is constant
88 and SPEED >= SPACE. In other cases a specialized version is
90 * bug fix: using obsoleted structure instances with TYPEP and
91 generic functions now signals a sensible error.
92 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
93 (reported by Kristoffer Kvello)
94 * bug fix: backtrace construction is now more careful when making
95 lisp-objects from pointers on the stack, to avoid creating bogus
96 objects that can be seen by the GC.
97 * bug fix: defaulting of values in contexts expecting more than 7
98 variables now works on x86-64. (reported by Christopher Laux)
99 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
101 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
102 as the property-list of a symbol.
103 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
104 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
105 situations requested, are once again file-compileable. (reported
108 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
109 * MOP improvement: support for user-defined subclasses of
110 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
111 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
112 the expansion of DEFMETHOD, is responsible for generating a form
113 which creates a list of specializers when evaluated. Additional
114 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
115 debugging and introspective support.
116 * minor incompatible change: the (unsupported) spinlock interface
117 has changed: free spinlock now has the value NIL, and a held spinlock
118 has the owning thread as its value.
119 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
120 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
122 * enhancement: name of a socket-stream is now "a socket" instead of
124 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
125 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
126 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
127 for generic functions. (Thanks to Tobias C. Rittweiler)
128 * optimization: bignum printing speed has been improved by 20-40%
129 (depending on the bignum size.)
130 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
132 * bug fix: the cache used by the CLOS to store precomputed effective
133 methods, slot offsets, and constant return values is now thread and
135 * bug fix: generic function dispatch function updating is now thread
136 and interrupt safe (in the sense that the known issues have been
138 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
139 * bug fix: interning EQL-specializers is now thread and interrupt safe.
140 * bug fix: asdf systems with dependencies to the SB-POSIX or
141 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
142 * bug fix: interrupt safety of applicable method computation has been
145 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
146 * new contrib: sb-cover, an experimental code coverage tool, is included
148 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
149 significantly faster.
150 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
151 produce more efficient code on x86-64 if the compiler can determine
152 that (+ INDEX <constant>) does not require a bounds check and FOO
153 has an element type at least 8 bits wide.
154 * enhancement: a new, experimental synchronous timeout facility is
155 provided. Refer to SB-SYS:WITH-DEADLINE for details.
156 * enhancement: when a symbol name conflict error arises, the
157 conflicting symbols are always printed with a package prefix.
158 (thanks to Kevin Reid)
159 * enhancement: stepping is now once again supported on the SPARC and
160 MIPS platforms. (It is also now more likely to work on CheneyGC
162 * enhancement: sb-sprof can now also track and report accurate call
164 * bug fixes: the treatment of non-standard subclasses of
165 SB-MOP:SPECIALIZER is more correct.
166 * incompatible change: PURIFY no longer copies the data from the
167 dynamic space into the static and read-only spaces on platforms
168 that use the generational garbage collector
169 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
171 * bug fix: GC race condition occasionally resulting in crashes with
172 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
174 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
176 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
177 a STYLE-WARNING to be signalled (regression from 1.0.4.)
178 * bug fix: an asynchronous interrupt could previously leave the
179 system running with GC inhibited.
180 * bug fix: a DECLARE form evaluated at top-level now causes an error
181 rather than silently (or verbosely) returning NIL.
182 * bug fix: trying to dissassemble functions compiled at high DEBUG could
183 result in a error being signalled due to source form lookup errors.
184 (reported by Peter Graves)
186 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
187 * incompatible change: removed writer methods for host-ent-name,
188 host-ent-addresses -- changing the values did not update the DNS
190 * minor incompatible change: changed experimental JOIN-THREAD interface
191 * documentation: the manual now lists reader and writer methods
192 in class slot documentation sections. (thanks to Richard M Kreuter)
193 * documentation: unwinding from asyncronous events has been
194 documented as unsafe.
195 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
196 in multithreaded application code.
197 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
198 platforms. (thanks to James Anderson for the optimization hint)
199 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
201 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
202 variants no longer cons.
203 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
204 their NOT- variants no longer cons.
205 * optimization: EQUAL hash tables no longer use SXHASH for objects
206 of all data types, but instead use an EQL hash for types for which
207 EQUAL is the same as EQL.
208 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
209 are significantly faster.
210 * optimization: new STRING-OUTPUT-STREAM implementation is much
211 faster for large outputs and conses 30% less on average.
212 * enhancement: XREF information is now collected for references made
213 to global variables using SYMBOL-VALUE and a constant argument.
214 * enhancement: SIGINT now causes a specific condition
215 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
216 * bug fix: FILE-POSITION used to signal an error in some cases where
217 ANSI requires it to return NIL.
218 * bug fix: ADJUST-ARRAY is now interrupt-safe.
219 * bug fix: adding and removing fd-handlers is now interrupt-safe.
220 * bug fix: inlined calls to C now ensure 16byte stack alignment on
222 * bug fix: bad type declaration in the CLOS implementation has
223 been fixed. (reported by James Anderson)
224 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
225 (thanks to Lutz Euler)
226 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
227 required by the CLHS. (reported by Samium Gromoff)
228 * bug fix: dead unbound variable references now signal an error.
229 (reported by Marco Monteiro)
230 * bug fix: / with an unused value was being deleted in safe code.
231 (thanks to Marco Monteiro and Kevin Reid)
232 * bug fix: number of characters that can be written onto a single
233 line in a file is unlimited.
234 * bug fix: some GC deadlocks caused by asynchronous interrupts have
235 been fixed by inhibiting interrupts for when GC is disbled.
236 * bug fix: some interrupt safety issues with GETHASH, (SETF
237 GETHASH), CLRHASH and REMHASH have been fixed.
238 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
239 specifier no longer causes infinite recursion.
240 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
241 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
242 * bug fix: an &environment argument with the correct variable information
243 is passed to macros that are expanded during byte compilation.
244 (reported by Samium Gromoff)
245 * bug fix: a logic error was causing the hash function for bignums to
246 have excessive amounts of collisions. (reported by Faré Rideau)
247 * bug fix: modifying the contents of an array could change the return
248 value of SXHASH on that array, which is only allowed for strings
249 and bit vectors. (bug introduced in 0.9.16)
250 * improvement: the x86-64/darwin port now passes all tests (except
251 for the debugger tests) but should still be considered
252 experimental until this is fixed.
253 * improvement: a style-warning is signaled for CASE (etc) clauses with
254 duplicate keys. (thanks to Kevin Reid)
255 * improvement: macos/x86 and macos/x86-64 now use mach exception
256 handlers for dealing with illegal instructions (for trapping and
257 error handling) and memory protection violations (for GC).
259 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
260 * new platform: experimental support for x86-64/darwin (MacOS).
261 * incompatible change: the thread-safe (on most platforms) getaddrinfo
262 and getnameinfo sockets functions are used instead of gethostbyaddr
263 and gethostbyname, on platforms where the newer functions are available.
264 As a result, the ALIASES field of HOST-ENT will always be NIL on these
266 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
267 don't print the startup banner, but behave as if --noinform was passed
268 as a command line argument. (thanks to Kevin Reid)
269 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
270 * optimization: code using alien values with undeclared types is much faster.
271 * optimization: the compiler is now able to open code SEARCH in more cases.
272 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
273 * bug fix: using standardized COMMON-LISP special variables as loop
274 variables no longer signals bogus package lock violations. (reported
276 * bug fix: declaring local loop variables to be of a range-limited type
277 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
278 (reported by Andras Simon)
279 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
280 bugs remain on x86-64.)
281 * bug fix: the #= and ## reader macros now interact reasonably with
282 funcallable instances.
283 * bug fix: type-checks for function arguments were compiled using the
284 compiler policy settings of the wrong lexical environment (in 1.0.2
286 * bug fix: SHADOW accepts characters as string designators, as required
287 by the spec (thanks to Eric Marsden)
288 * bug fix: fixed GC safety issues when foreign functions are called with
289 non-base strings as arguments
290 * bug fix: more consistent error output for fatal-compiler-warnings, like
292 * bug fix: functions with proper names were showing up as NIL in
293 backtraces (reported by Edi Weitz, regression in 1.0.2)
295 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
296 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
297 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
298 produce more efficient code on the x86 if the compiler can determine
299 that (+ INDEX <constant>) does not require a bounds check and FOO
300 has an element type at least 8 bits wide.
301 * bug fix: references to undefined variables are handled the same way
302 in toplevel forms as in the normal compiler
303 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
305 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
306 (thanks to Jon Buller)
307 * improvement: faster compilation times for complex functions
308 * improvement: added readlink support to SB-POSIX (thanks to Richard
311 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
312 * improvement: experimental support for mach exception handling on
313 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
315 * improvement: support for GBK external format.
316 (thanks to Chun Tian (binghe))
317 * improvement: the debugger now displays variables that have been closed
318 over, in code compiled with (DEBUG 2) or higher
319 * improvement: support for executable cores on NetBSD (thanks to
321 * new feature: added a RESTART-FRAME debugger command
322 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
323 be used to provide an implementation for FILE-POSITION on Gray streams
324 (thanks to Eric Marsden)
325 * new feature: add syslog, openlog and closelog support to SB-POSIX
326 (thanks to Richard Kreuter)
327 * optimization: the function call overhead in code compiled with
328 a high DEBUG optimization setting is significantly
329 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
330 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
331 (thanks to Tony Martinez)
332 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
333 evaluated once (reported by Kevin Reid)
334 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
335 works again (thanks to Kilian Sprotte)
336 * bug fix: an error is signaled for tagbodies with duplicate tags
337 (thanks to Stephen Wilson)
338 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
339 * bug fix: Win32 port can now handle foreign code unwinding Lisp
340 stack frames from alien callbacks.
341 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
342 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
343 65k pages (thanks to David Woodhouse)
344 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
346 changes in sbcl-1.0.1 relative to sbcl-1.0:
347 * new platform: FreeBSD/x86-64, including support for threading.
348 * new feature: the compiler stores cross-referencing information
349 abount function calls (who-calls), macroexpansion (who-macroexpands)
350 and special variables (who-binds, who-sets, who-references) for code
351 compiled with (< SPACE 3). This information is available through the
352 sb-introspect contrib.
353 * new feature: users may subclass SEQUENCE, and have instances of
354 these classes interoperate with standard Common Lisp functions if
355 a number of methods are defined. (This feature is experimental
356 and the interface subject to change based on feedback from SBCL
357 users and the general community)
358 * improvement: sb-sprof traces call stacks to an arbitrary depth on
359 x86/x86-64, rather than the previous fixed depth of 8
360 * improvement: another pthread back-end of mutex "pthread-futex".
361 * bug fix: non-ascii command-line arguments are processed correctly
362 (thanks to Yaroslav Kavenchuk)
363 * bug fix: non-required arguments were not passed correctly when a method
364 defined using DEFMETHOD was called from a mop-generated method using
365 CALL-NEXT-METHOD (reported by Pascal Costanza)
366 * bug fix: recursion is now permitted in accessors through
367 SLOT-UNBOUND. (reported by Pascal Costanza)
368 * bug fix: an error was signaled at startup if the HOME environment
369 variable was defined, but had an empty value (reported by Peter Van Eynde)
370 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
371 signal a PROGRAM-ERROR, not a BUG.
372 * bug fix: SB-POSIX:READDIR works when built with large file support.
373 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
375 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
376 for better automatic indentation support. (thanks to Matt Pillsbury)
377 * optimization: loading generic functions no longer takes O(n^2) time,
378 proportional to the amount of methods in the generic function
379 (reported by Todd Sabin and Jeremy Brown)
380 * optimization: the FIND and POSITION family of sequence functions
381 are significantly faster on arrays whose element types have been
383 * improvements to the Windows port:
384 ** Intermittent heap corruption problems have been fixed. (thanks
385 to Alastair Bridgewater)
386 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
388 ** Lisp is able to unwind foreign exception frames from alien
389 callbacks. (thanks to Alastair Bridgewater)
391 changes in sbcl-1.0 relative to sbcl-0.9.18:
392 * improvement: experimental support for threading on FreeBSD/x86.
393 (thanks to NIIMI Satoshi)
394 * improvement: runtime option --dynamic-space-size can be used
395 to set the size of the dynamic space reserved on startup.
396 * improvement: floating point modes in effect are now saved in
397 core, and restored on startup.
398 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
399 startup, not time since first call to GET-INTERNAL-REAL-TIME.
400 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
401 threads are not running after *SAVE-HOOKS* have run.
402 * improvement: writes to CLOS instance slots are type-checked in code
403 compiled with (SAFETY 3)
404 * improvement: floating-point exception handling on FreeBSD (thanks to
406 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
407 (thanks to Zach Beane)
408 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
410 * improvement: added support for the Shift-JIS external format.
411 (contributed by NIIMI Satoshi)
412 * improvement: callbacks are supported on Linux/PPC. (thanks to
414 * bug fix: compiler bug triggered by a (non-standard) VALUES
415 declaration in a LET* was fixed. (reported by Kaersten Poeck)
416 * bug fix: file compiler no longer confuses validated and already
417 dumped structurres. (reported by Kaersten Poeck)
418 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
419 fill-pointer signals a type-error as required. (thanks to
421 * bug fix: disassemly of funcallable instances works.
422 * bug fix: single stepping on PPC.
423 * bug fix: fix thread-safety problems in the type system (generally
424 manifesting as nonsensical errors like "STRING is a bad type specifier
425 for sequences" or "The value 1 is not of type FIXNUM")
426 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
427 (reported by Josip Gracin)
428 * bug fix: an error is signaled for attempts to displace arrays with
429 incompatible element types (thanks to Mario Mommer)
430 * bug fix: more correct handling of wide characters in debug info
431 (bug reported by Attila Lendvai and fixed by Juho Snellman)
432 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
433 and don't cause extra consing
434 * optimization: MAP and MAP-INTO are significantly faster on vectors
435 whose elements types have been declared.
436 * Improvements to SB-SPROF:
437 ** Support for allocation profiling
438 ** Reduced profiling overhead, especially for long profiling runs
439 * Improvements to the Windows port:
440 ** floating point exceptions are now reported correctly.
441 ** stack exhaustion detection works partially.
442 ** more accurate GET-INTERNAL-REAL-TIME.
443 ** better RUN-PROGRAM behaviour in case of errors in the child
445 ** PROBE-FILE now simplifies pathnames correctly.
446 ** DIRECTORY now works correctly with :WILD-INFERIORS.
447 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
448 1st 1970 (although time timezone data will be unreliable).
449 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
451 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
452 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
453 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
455 * bug fix: two potential GC deadlocks affecting threaded builds.
456 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
457 returns T (reported by Anton Kazennikov)
458 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
459 with non-variable places
460 * bug fix: remove a race condition in the setting of
461 funcallable-instance functions, this should make threaded CLOS
462 code more stable against memory faults.
463 * bug fix: corruption of specials when unbinding is interrupted by an
464 asynchronous unwind (reported by Hannu Koivisto)
465 * improvement: the debugger will now also display local variables that
466 are only used once, for code compiled with a DEBUG optimization quality
469 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
470 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
471 * incompatible change: External-format support for FFI calls. The
472 SB-ALIEN:C-STRING no longer implies an ASCII
473 external-format. Instead the string is subject to external-format
474 conversion. Additionally return values of type SB-ALIEN:C-STRING
475 are by default of type (SIMPLE-ARRAY CHARACTER), not
476 SIMPLE-BASE-STRING. For an alien type that behaves like the old
477 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
478 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
479 * incompatible change: SB-EXT package no longer contains the
480 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
481 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
483 * incompatible change: the single-stepper is no longer available
484 on Alpha, Mips and Sparc platforms.
485 * minor incompatible change: the direct superclasses of
486 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
487 not (STANDARD-OBJECT FUNCTION). This makes the
488 class-precedence-lists of GENERIC-FUNCTION and
489 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
491 * minor incompatible change: the default stream external format on
492 non-unicode SBCL is no longer detected from the locale, but is always
494 * new feature: Add a version of evaluator that uses an interpreter instead
495 of the compiler. EVAL still uses the compiler by default, to switch it
496 to use the interpreter, set the value of the variable
497 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
498 * minor incompatible change: the single-stepper REPL has been merged
499 with the normal debugger (see the "Stepping" heading of the debugger help
500 for more details). The debugger command STEP will no longer switch
501 to the single-stepper REPL.
502 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
503 for a type now works.
504 * bug fix: loading of default sysinit file works. (thanks to Leonid
506 * bug fix: better detection of circularities in the file-compiler.
507 (reported by Marco Monteiro)
508 * bug fix: the CL pathname functions now work with files that have
509 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
510 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
511 systems with Unix98 pty semantics.
512 * bug fix: ASDF-INSTALL will now work with bsd tar.
513 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
515 * bug fix: timers expiring in dead threads no longer cause a
516 type-error (reported by Paul "Nonny Mouse").
517 * bug fix: thanks to more lightweight single-stepper instrumentation,
518 code compiled with (DEBUG 3) will compile and execute significantly faster,
519 and will have more accurate type-inferencing than before
520 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
521 whose bindings are modified
522 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
523 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
524 ** replace dummy implementations of CL:MACHINE-INSTANCE and
525 CL:SOFTWARE-VERSION with proper version
527 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
528 * feature: implemented the READER-METHOD-CLASS and
529 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
530 as specified by AMOP.
531 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
533 * optimization: faster LOGCOUNT implementation on x86 and x86-64
534 (thanks to Lutz Euler)
535 * optimization: hashing of general arrays and vectors has been
536 improved. (reported by Any Fingerhut)
537 * enhancement: SB-INTROSPECT is now able to find definitions of
538 profiled functions. (thanks to Troels Henriksen)
539 * enhancement: compiler-macro expansion applies now to FUNCALL forms
540 as well, allowing compiler-macros for SETF-functions to expand.
541 * enhancement: step-instrumentation no longer wraps known
542 single-value functions with multiple-value context, allowing
543 better type inference.
544 * fixed bug #337: use of MAKE-METHOD in method combination now works
545 even in the presence of user-defined method classes. (reported by
546 Bruno Haible and Pascal Costanza)
547 * fixed bug #339(c): if there are applicable methods not part of any
548 long-form method-combination group, call INVALID-METHOD-ERROR.
549 (reported by Bruno Haible)
550 * fixed bug #361: the :FUNCTION initarg in the protocol for
551 initialization of methods can now be used to override
552 internally-produced optimized functions. (reported by Bruno
554 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
555 system-provided lambda expression no longer cause warnings about
556 unbound #:|pv-table| symbols.
557 * bug fix: improved the handling of type declarations and the
558 detection of violations for keyword arguments with non-constant
560 * bug fix: potentially erronous calls to PATHNAME and
561 MERGE-PATHNAMES were being flushed in some cases.
562 (reported by Richard Kreuter)
563 * bug fix: compiled calls to TYPEP were mishandling obsolete
564 instances. (reported by James Bielman and Attila Lendvai)
565 * bug fix: format strings with ~> without matching ~< no longer
566 trigger an AVER, but signal an understandable error instead.
567 (reported by Antonio Martinez)
568 * bug fix: specifying an output-file without a pathname-type for
569 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
570 of input-file instead of "fasl". (reported by Robert Dodier)
571 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
572 (reported by James Y Knight).
573 * bug fix: compiler-macros-function did not consider the environment
574 argument for shadowing by local functions.
575 * bug fix: compiler-macros expansion was inhibited by local INLINE
577 * bug fix: inline expansions of known functions were subject to
578 step-instrumentation in high debug policies, leading to problems
580 * bug fix: compiler failed to differentiate between different CONS
582 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
583 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
584 * bug fix: #368: incorrect use of expressed vs. upgraded array
586 * bug fix: #306a: more precise unions of array types.
587 * thread-safety improvements:
588 ** CONDITION-WAIT could return early on Linux, if the thread was
589 interrupted and subsequently continued with SIGCONT.
590 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
592 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
593 * added support for the ucs-2 external format. (contributed by Ivan
595 * minor incompatible change: pretty printing of objects of type
596 (cons symbol) is, in the default pprint-dispatch-table, now
597 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
599 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
600 called later in a class's lifetime, possibly as late as when the
601 first instance of the class is created. Previously,
602 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
603 class became finalizeable.
604 * fixed bug: FILE-POSITION sometimes returned inconsistent results
605 for multibyte external-format streams. (thanks to "vbzoli")
606 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
607 with :ALLOCATION :CLASS inherited from superclasses of the
609 * fixed bug: anonymous classes can now be created using the :NAME
610 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
611 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
612 * fixed bug: core-files saved with :EXECUTABLE T can again be
613 executed when SBCL_HOME isn't set. (reported by James Knight)
614 * fixed bug: toplevel LOCALLY forms with declarations could
615 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
616 * fixed bug: printing from several different threads using different
617 values of *print-case* could cause invalid output, due to
618 some internal special variables of the printer not being bound
619 thread-locally (reported by Max Mikhanosha)
620 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
621 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
622 (reported by Pascal Costanza)
623 * fixed bug: FINALIZE-INHERITANCE is called from
624 REINITIALIZE-INSTANCE on classes when the class has previously
625 been finalized, as required by AMOP.
626 * minor code generation optimizations:
627 ** better register allocation in CLOS dispatching functions
628 ** overflow detection when coercing signed bytes to fixnums on x86-64
629 ** is now implemented with one IMUL instruction instead of three shifts
630 ** more efficient bit-vector access on x86 and x86-64
631 ** more efficient access to raw structure slots on x86 and x86-64
632 * fixed some bugs revealed by Paul Dietz' test suite:
633 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
636 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
637 * feature: thread support on Solaris/x86, and experimental thread support
639 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
641 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
642 default method for SLOT-UNBOUND.
643 * minor incompatible change: prevent the user from specializing the
644 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
645 somewhat counter to the intent of the protocol, I (CSR) think, and
646 additionally it just doesn't work in SBCL as currently
647 implemented, thanks to optimizations (that are always valid for
648 the other three SLOT-VALUEish functions, but not for the setter).
649 * minor incompatible change: the :SB-LDB feature is now enabled by
650 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
651 the low-level debugger.
652 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
653 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
654 down to an SB-SYS:FD-STREAM, allowing direct communication in
655 more cases. Temporary files and pipes are still used as a fallback
657 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
658 on the non-reentrant C functions localtime(3) and gmtime(3).
659 * bug fix: global optimization policy was not visible in LOCALLY and
661 * bug fix: class objects can be used as specializers in methods.
662 (reported by Pascal Costanza)
663 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
664 with a type error. (reported by blitz_ on #lisp)
665 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
666 failed with a type error. (reported by Pascal Bourguignon)
667 * bug fix: merging pathnames against defaults with :DIRECTORY
668 starting with '(:RELATIVE :BACK) should preserve the :BACK.
669 (reported by James Y Knight)
670 * bug fix: saving large (>2GB) cores on x86-64 now works
671 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
672 constant index and a (simple-array (signed-byte 32)) array
673 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
674 error (patch by Robert J. Macomber)
675 * feature: TIME now displays the amount of run-time spent in GC
676 * bug fix: The debugger now does a better job of respecting
677 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
678 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
679 workaround for bug 403.)
680 * bug fix: floating point exception handling now works on FreeBSD
681 (thanks to NIIMI Satoshi)
682 * fixed some bugs revealed by Paul Dietz' test suite:
683 ** MISC.641: LET-conversion were not supposed to work in late
685 * improvements to the Win32/x86 port:
686 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
687 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
689 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
690 * new feature: source path information is generated for macro-expansion
691 errors for use in IDE's like Slime (thanks to Helmut Eller)
692 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
693 * bug fix: compiler does not loop forever on an invalid type in
695 * improvement: compilation of most CLOS applications is significantly
697 * optimization: added a limited bytecode compiler for simple toplevel
698 forms, speeding up compilation and FASL loading
699 * bug fix: the statistical profiler now properly distinguishes anonymous
702 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
703 * minor incompatible change: in sbcl-0.9.11 (but not earlier
704 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
705 into subclasses of the finalized class. Now user calls to
706 FINALIZE-INHERITANCE finalize just the one class, and calls by the
707 system return before any subclasses are finalized.
708 * minor incompatible change: The reader no longer ignores errors
709 regarding non-existent packages in #+ and #- feature tests.
710 * new feature: command line options --no-sysinit, --no-userinit to
711 inhibit loading the corresponding init files
712 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
713 for sending data through UDP sockets (thanks to François-René Rideau)
714 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
715 error is signalled instead (thanks to François-René Rideau)
716 * minor incompatible change: Error signalling behaviour of lexical
717 operations violating package locks has changed slightly. Refer to
718 documentation on package locks for details.
719 * enhancement: EVAL can process IF-expressions without resorting to the
721 * bug fix: Some operations involving SIN, COS, or TAN weren't being
722 constant-folded properly due to missing out-of-line functions.
723 (reported by Mika Pihlajamäki)
724 * bug fix: LISTEN sometimes returned T even in cases where no data was
725 immediately available from the stream
726 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
727 were reversed. (reported by Levente Mészáros)
728 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
729 when given a vector displaced to an adjustable array. (reported
731 * bug fix: derivation of float boundaries from numbers outside the
732 appropriate float range (reported by John Wiseman)
733 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
735 * bug fix: precomputing cache entries for generic functions with
736 some subclasses of specializers as yet invalid does not attempt to
737 fill a cache line with a negative offset. (reported by Levente
739 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
740 allow condition class objects as arguments to DOCUMENTATION and
741 (SETF DOCUMENTATION); only find and set documentation for
742 structure names for the STRUCTURE doc-type. (suggested by Gary
744 * improvements to the Win32/x86 port:
745 ** (user-homedir-pathname) and default initialization file
746 locations now know about the user's "Documents and Settings"
747 directory (thanks to Yaroslav Kavenchuk)
748 ** run-program is implemented (thanks to Mike Thomas)
749 ** sockets support (thanks to Timothy Ritchey)
750 ** better backtrace support (thanks to Alastair Bridgewater)
751 ** sb-grovel supported
752 ** asdf-install and sb-posix work somewhat
753 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
754 * improvements to the Solaris/x86 port:
755 ** works on Solaris 11/Solaris Express
756 ** floating-point exception handling support
757 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
758 * fixed some bugs revealed by Paul Dietz' test suite:
759 ** REMOVE-METHOD returns its generic function argument even when
760 the method is not one of the generic functions' methods.
761 ** objects declared as MEMBER types can be admissible arguments to
763 ** printing characters should simply be printed by the FORMAT ~:C
765 ** compiler failure when compiling functions with hairy constant
766 defaults for optional parameters.
767 ** compiler produces wrong code when MAYBE-INLINE-expanding a
768 function, which is already optimized.
770 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
771 * new platform: experimental support for SBCL x86/Darwin, including
772 MacOS X 10.4.5 on Intel.
773 * new feature: Unicode character names are now known to the system
774 (through CHAR-NAME and NAME-CHAR).
775 * new feature: the filesystem location of SBCL's core file is
776 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
777 * minor incompatible change: the contrib modules SB-POSIX and
778 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
779 this change is to make it easier to distribute
780 location-independent binaries.
781 * bug fix: as implied by AMOP, standardized classes no longer have
782 slots named by external symbols of public packages. (reported by
784 * optimization: calling functions via constant symbols -- as in
785 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
786 via the function object as in (FUNCALL #'FOO).
787 * optimization: on x86 and x86-64, the calling convention for the
788 case of dealing with an unknown number of values has been altered
789 to be friendlier to the prediction heuristics implemented,
790 particularly with reference to CALL and RET pairing. (thanks to
791 Alastair Bridgewater)
792 * optimization: on x86, the code for access to thread-local symbol
793 values and binding/unbinding of thread-local symbols is smaller.
794 (thanks to Alastair Bridgewater)
795 * enhancement: CONSTANTP is now able to determine constantness of
796 more complex forms, including calls to constant-foldable standardized
797 functions and some special forms beyond QUOTE.
798 * fixed bug: occasional GC crashes on Solaris/x86
799 * optimization: x86-64 supports stack allocation of results of simple
800 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
801 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
802 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
803 (thanks to James Knight)
804 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
805 by the standard (thanks to Stephen Compall)
807 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
808 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
809 be used for bundling the runtime and the core file into one
810 executable binary. This feature is not currently supported on all SBCL
811 platforms. (thanks to James Bielman and NIIMI Satoshi)
812 * new feature: a generational or ephemeral garbage collector is now
813 the default on the PowerPC platform (both Linux and Darwin). The
814 old Cheney (stop and copy) collector is a build-time option.
815 (thanks to Cyrus Harmon, after Raymond Toy)
816 * minor incompatible change: the method by which SBCL finds its
817 contributed modules has changed; it no longer relies on symbolic
818 links from an $SBCL_HOME/systems directory, but searches directly
819 in the subdirectories of $SBCL_HOME.
820 * enhancement: the dynamic heap size on the Linux/PPC platform is
821 markedly larger, even using the older Cheney garbage collector.
822 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
823 certain complicated string types. (reported by Gary King)
824 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
825 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
826 * fixed bug: DOCUMENTATION on structures no longer signals an
827 error if no structure type of the right name exists. (reported by
829 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
830 applicable non-standard primary or :AROUND method on
831 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
832 no longer cause unbound variable errors. (reported by Kevin Reid)
833 * fixed bug: metacircle resolution in cases where methods have slots
834 added before the slots from STANDARD-METHOD. (reported by Jean
836 * fixed bug: the Power PC assembly code for calling into lisp
837 sometimes computed its return address wrongly (depending on the
838 15th bit of the address, fixed at link time). This used to
839 manifest itself in a segmentation violation while building PCL.
840 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
841 many others over the years)
842 * fixed bug: ROOM no longer reports silly numbers for stack usage if
843 the stack pointer (treated as a signed integer) is negative.
844 (thanks to Peter van Eynde)
846 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
847 * new platform: experimental support for the Windows operating
848 system has been added. (thanks to Alastair Bridgewater)
849 * fixed several bugs in and robustified the PPC FFI (including
850 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
851 * bug fix: allow non-simple string symbol names (reported by Paul
853 * bug fix: interrupt handling on NetBSD (thanks to Richard M
855 * bug fix: saving a core corrupted callbacks on x86/x86-64
856 * bug fix: closed a loophole in metacircularity detection and
857 grounding in the PCL implementation of CLOS.
858 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
859 (reported by tomppa on #lisp)
860 * bug fix: clear the direction flag on Lisp -> C transitions, as
861 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
862 (reported by Andrej Grozin and Hendrik Maryns)
863 * optimization: major improvements to GC efficiency on GENCGC platforms
864 * optimization: faster implementation of EQUAL
865 * optimization: emit more efficient opcodes for some common
866 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
867 * optimization: several other minor code-generation improvements on x86-64
868 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
870 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
871 * minor incompatible change: (SETF CLASS-NAME) and (SETF
872 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
873 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
874 by ANSI as a generic function, and for consistency (SETF
875 GENERIC-FUNCTION-NAME) is treated likewise.
876 * fixed bug #233.b: make constraint propagation notice when a variable
877 value is changed after it is referenced but before it is used
878 * fixed bug #296: no more arbitrary behaviour from filenames with
879 odd characters as --load arguments. (reported by Adam Warner)
880 * fixed bug #390: :CHARACTER-SET pathname components now work as
881 expected. (reported by Tim Daly Jr)
882 * fixed bug #391: complicated :TYPE intersections in slot
883 definitions no longer cause an error in PCL internals.
884 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
885 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
886 returning the number of octets which would be written to the
887 file-stream. (thanks to Robert J. Macomber)
888 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
889 arguments to the internal stream functions. (thanks to David
891 * bug fix: stack exhaustion is now handled on the x86/SunOS
892 platform. (thanks to Daisuke Homma)
893 * bug fix: more accurate ROOM results on GENCGC platforms
894 * optimization: improved type inference for arithmetic-for
895 index variables in LOOP
896 * optimization: faster floating-point SQRT on x86-64
897 * fixed some bugs revealed by Paul Dietz' test suite:
898 ** DOCUMENTATION returns NIL instead of "" for method combinations
899 that don't have a docstring
901 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
902 * minor incompatible change: (SETF CLASS-NAME) and (SETF
903 GENERIC-FUNCTION-NAME) are no longer generic functions, and
904 therefore are not customizeable by user code (as seems to be at
905 least permitted and maybe required by AMOP). As a consolation,
906 however, the SBCL implementation of these functions now calls
907 REINITIALIZE-INSTANCE as specified by AMOP.
908 * bug fix: slot-definition documentation is propagated as per ANSI
909 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
910 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
911 argument, as do eslotd initialization methods. (from Pascal
912 Costanza's "Closer" project)
913 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
914 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
916 * bug fix: it is now possible to have more than one subclass of
917 STANDARD-GENERIC-FUNCTION without causing stack overflow.
918 (reported by Bruno Haible, Pascal Costanza and others)
919 * bug fix: the dependent update protocol now works for generic
920 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
922 * bug fix: condition-class instances corresponding to
923 DEFINE-CONDITION forms are now created eagerly. (reported by
924 Kalle Olavi Niemitalo on comp.lang.lisp)
925 * bug fix: floating point printing is more accurate in some
926 circumstances. (thanks to Simon Alexander)
927 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
928 merged with *DEFAULT-PATHNAME-DEFAULTS*.
929 * bug fix: callbacks on OS X now preserve stack-alignment.
930 (thanks to Cyrus Harmon)
931 * enhancement: the x86-64 disassembler is much better at
932 disassembling SSE instructions. (thanks to Lutz Euler)
933 * enhancement: CHECK-TYPE on a variable now allows type-inference
934 (thanks to Vincent Arkesteijn)
935 * optimization: improved performance of EUC-JP external format.
936 (thanks to NIIMI Satoshi)
937 * optimization: performance improvements to IO on file streams of
938 :ELEMENT-TYPE CHARACTER
939 * optimization: much faster memory allocation on x86-64
940 * optimization: faster garbage collections (latency and throughput)
942 * optimization: faster bignum subtraction and division on x86 and x86-64
943 (thanks to Lutz Euler)
944 * optimization: more accurate type-inference for loops that use a
945 floating point index variable or a negative step.
947 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
948 * bug fix: add a workaround to SBCL looping infinitely at startup on
949 Linux kernels with apparently buggy implementations of personality().
950 (thanks to Svein Ove Aas)
951 * bug fix: Unicode symbols are correctly printed in LDB backtraces
952 (thanks to David Lichteblau)
953 * bug fix: local bindings shadow global symbol macros for
954 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
955 * optimization: non-open coded uses of numeric comparison operators
956 (e.g. >) no longer cons when called with more than one parameter
957 on platforms supporting dynamic-extent allocation.
958 * enhancement: saving cores with foreign code loaded is now supported
959 on MIPS/Linux in addition to the previously supported platforms.
960 * bug fix: FIND-RESTART now tests for activity, not applicability when given
961 a restart object as identifier. (reported by Helmut Eller for CMUCL)
962 * bug fix: division by zero in sb-sprof when no samples were collected
963 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
964 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
965 (thanks to Alexander Kjeldaas)
966 * new feature: ignoring the return values of destructive functions
967 like NREVERSE signals a compile-time style-warning.
968 (thanks to Kevin Reid)
969 * new feature: the alignment of alien structure fields can be
970 explicitly specified. (thanks to Cyrus Harmon)
971 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
972 and dump core on SIGQUIT
974 ** incompatible change: threads do not inherit values of specials
975 from their parents (see manual)
976 ** bug fix: threads stacks belonging to dead threads are freed by the
977 next exiting thread, no need to gc to collect thread stacks anymore
978 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
979 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
980 ** bug fix: dynamic variable and thread start related gc lossage
981 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
983 * fixed some bugs revealed by Paul Dietz' test suite:
984 ** SUBTYPEP is slightly more accurate on heinously complicated
985 CONS types where some of the members have uncertain (in the
986 NIL, NIL sense) type relationships to each other.
988 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
989 no longer purified unless :PURIFY T is explicitly specified.
990 ** Non-purified cores are significantly smaller than before
992 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
993 * new feature: timers based on Zach Beane's excellent timer package
994 * added support for the following external formats: koi8-u,
995 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
996 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
997 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
998 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
999 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1000 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1001 * incompatible change: a threaded SBCL will no longer revert to
1002 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1003 * bug fix: interrupts are disabled until startup is complete; no
1004 more sigsegvs when receiving a signal to soon
1005 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1007 * bug fix: add a workaround for the memory randomization features in
1008 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1009 workaround will only be in effect on systems with the proc filesystem
1011 * bug fix: printing objects of type HASH-TABLE signals a
1012 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1014 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1015 have been running for over 50 days. (reported by Gilbert Baumann)
1016 * bug fix: the logic for getting names of functions gets less
1017 confused when confronded with alternate-metaclass
1018 funcallable-instances. (reported by Cyrus Harmon)
1019 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1020 consistent, even on internal alternate-metaclass objects.
1021 * bug fix: flush closure information collected by physical
1022 environment analysis prepass before the main pass. (bug reported
1024 * bug fix: compiler pack phase does not modify a hashtable, which is
1025 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1026 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1027 may be expanded. (reported by Alexander <malishev> on c.l.l)
1028 * bug fix: no more style-warnings when compiling code using LAST
1029 under high-SPEED low-SPACE settings. (reported by David Wallin
1031 * fixed some incompatibilities between SBCL's MOP and the MOP
1033 ** the METAOBJECT class is now implemented;
1034 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1035 STANDARD-OBJECT, as required;
1036 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1037 now compatible (as required by VALIDATE-SUPERCLASS); there
1038 remains a consistency requirement over the presence or absence
1039 of the FUNCTION class in the superclass list of finalized
1040 classes; see the manual for more details;
1041 ** the :AROUND method for COMPUTE-SLOTS on
1042 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1043 requested slot ordering.
1045 ** bug fix: parent thread now can be gc'ed even with a live
1047 ** bug fix: binding a special with PROGV to no value is not
1048 the same as that symbol not having been bound (thanks to
1050 ** bug fix: binding specials is thread safe (thanks to
1052 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1053 and SB-SPROF do not die with 'no handler for signal XX in
1054 interrupt_handle_now(..)' anymore
1055 ** bug fix: WITH-TIMEOUT works with multiple running threads
1056 * fixed some bugs revealed by Paul Dietz' test suite:
1057 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1058 the :method-class keyword argument.
1060 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1061 * new port: the Solaris operating system on x86 processors is now
1062 mostly supported, though some rough edges in the environment
1063 remain. (thanks to Daisuke Homma)
1064 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1065 space for its heap. (thanks to Thiemo Seufer)
1066 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1067 closures. (thanks to Thiemo Seufer)
1068 * minor incompatible change: eof selects abort in the debugger.
1069 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1070 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1072 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1073 deprecated, and will go away in a future revision of SBCL.
1074 * minor incompatible change: GC-ON and GC-OFF are no longer
1075 implemented with a counter, it does not matter how many times gc
1076 is switched on or off
1077 * bug fix: discriminating functions for generic function classes
1078 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1079 make invalid assumptions about method precedence order. (reported
1081 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1082 platforms. (thanks to Thiemo Seufer)
1083 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1084 * bug fix: correct pathname printing with printer escaping is on.
1085 (thanks to Kevin Reid)
1086 * bug fix: complex VOP definitions in "user-space" no longer trigger
1087 package locks. (reported by Zach Beane)
1088 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1089 for funcallable-instance functions, and is no different from
1091 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1092 characters in the current readtable. (reported by Nicholas Neuss)
1093 * bug fix: SUBTYPEP on various CONS types returns more a more
1094 accurate acknowledgment of its certainty.
1095 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1096 lists in some cases. This partially fixes bug 384.
1097 * flush all standard streams before prompting in the REPL and the
1099 * bug fix: signal handling and triggering gc do not conflict
1100 directly anymore, in particular a high frequency sb-sprof does
1101 not prevent gc from running
1102 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1103 approximation for timezone and DST information between the
1104 universal time epoch and the smallest negative 32-bit time_t.
1105 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1106 year 1899 so long as the encoded time is non-negative.
1107 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1108 the correct answer for non-constant rotate amounts when performing
1109 an inline 32-bit rotation.
1111 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1112 there is only one thread in the session
1113 ** bug fix: memory leak for streams created in one thread and
1114 written to in another
1115 ** bug fix: lockup when compiled with gcc4
1116 ** bug fix: race that allows the gc to be triggered when gc is
1118 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1119 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1121 ** bug fix: finished threads are gc'ed properly
1122 * fixed some bugs revealed by Paul Dietz' test suite:
1123 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1124 has arguments with a different set of applicable methods from
1125 the orignal arguments.
1126 ** The type error thrown by MAP now has a correct expected-type
1128 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1129 name a compiled function.
1130 ** Three MISC tests where a large bignum was improperly coerced to
1131 a float that couldn't represent that bignum during type
1132 derivation were fixed.
1133 ** SUBTYPEP can now handle types involving the negation of a
1134 list-form FUNCTION type.
1135 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1136 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1137 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1139 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1140 * New feature: Experimental support for bivalent streams: streams
1141 opened with :element-type :default now allow character and binary
1142 (unsigned-byte 8) I/O
1143 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1144 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1146 * bug fix: no more highly sporadic "couldn't check whether ~S is
1147 readable" when reading a stream and an interrupt hits in the middle
1148 of a select system call
1149 * compiler better recognizes complex arrays (reported by Eduardo
1151 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1152 for variables on SBCL built with linkage-tables. (reported by Luis
1154 * various error reporting improvements.
1155 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1156 (Thanks to Thiemo Seufer)
1157 * bug fix: nested reader invokations work correctly
1158 * bug fix: it is possible to have simultaneous references to foreign
1159 code and foreign data with the same name.
1161 ** added x86-64 support
1162 ** incompatible change: the threading api now works with thread
1163 objects instead of thread ids
1164 ** bug fix: threads are protected from signals and interruption when
1165 starting up or going down
1166 ** bug fix: a race where an exiting thread could lose its stack to gc
1167 ** bug fix: don't halt on infinite error in threads if possible
1168 ** fixed numerous gc deadlocks introduced in the pthread merge
1169 ** bug fix: fixed thread safety issues in read and print
1170 ** bug fix: debugger doesn't hang on session lock if interrupted at
1171 an inappropriate moment
1172 ** bug fix: run-program is now thread safe(r)
1173 ** bug fix: inner with-recursive-lock no longer releases the mutex
1174 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1175 * fixed some bugs revealed by Paul Dietz' test suite:
1176 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1177 EXPECTED-TYPE slots filled.
1178 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1180 ** MAKE-CONDITION accepts classes as type-designators.
1181 ** COMPILE may never return NIL.
1182 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1183 range before calling Unix time functions
1185 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1186 * numerous signal handling fixes to increase stability
1187 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1188 * minor incompatible change: we now correctly canonize default
1189 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1190 as per the MOP, rather than the historical (INITARG INITFUNCTION
1191 INITFORM). (reported by Bruno Haible)
1192 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1193 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1194 for more information.
1195 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1196 pathname is a directory pathname.
1197 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1198 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1200 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1201 :METACLASS argument in addition to a class name. (reported by
1202 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1203 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1204 (reported by Bruno Haible; patch from Gerd Moellmann)
1205 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1207 * bug fix: more cleanups to the floating point exception handling on
1208 x86-64 (thanks to James Knight)
1209 * bug fix: the compiler does not try to constant fold calls of
1210 COERCE and BIT-* functions when they return freshly constructed
1211 objects. (reported by Nikodemus Siivola and Paul Dietz)
1212 * optimization: improved the MIPS versions of generic (in the
1213 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1214 * optimization: direct conversion of (unsigned-byte 32) to floats on
1215 the PowerPC platform.
1216 * optimization: structure instances with raw slots now use less
1217 memory, and probably show better memory locality. (thanks to
1219 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1220 are treated as requests for stack allocation on the x86-64,
1221 Alpha-32, PPC and SPARC platforms.
1222 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1223 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1224 (thanks to Tony Martinez)
1226 ** gcing a dead thread can no longer lead to lockups
1227 ** threads block signals until they are set up properly
1228 ** errno is no longer shared by threads
1229 ** interrupt-thread restores the eflags register on x86
1230 ** fixed some lockups due to gc/thread interaction
1231 * fixed some bugs revealed by Paul Dietz' test suite:
1232 ** invalid dotted lists no longer raise a read error when
1233 *READ-SUPPRESS* is T
1234 ** signal an error if a symbol that names a declaration is used
1235 as the name of a type, or vice versa
1236 ** allow using the (declare (typespec var*)) abbreviation for
1237 (declare (type typespec var*)) with all type specifiers
1238 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1239 ** always return NIL from PPRINT-POP when OBJECT is NIL
1240 ** don't signal errors when pretty-printing malformed LABELS,
1241 FLET or MACROLET forms
1242 ** declarations in a DOLIST body are also in scope for the
1244 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1246 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1249 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1250 * fixed cross-compiler leakages that prevented building a 32-bit
1251 target with a 64-bit host compiler.
1252 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1253 opened with :IF-EXISTS :OVERWRITE.
1254 * fixed bug 281: error for an invalid qualifier in a short-form method
1255 combination method is not signalled until the faulty method is called.
1256 * bug fix: iteration variable type inferrer failed to deal with open
1257 intervals. (reported by Alan Shields)
1258 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1259 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1260 or more runtime options were provided to the sbcl binary.
1261 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1262 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1263 * optimization: there's now a fast-path for fixnum arguments in the
1264 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1265 * optimization: the code generated on x86-64 is more compact thanks
1266 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1267 * bug fix: floating-point exception handling now partly works on
1268 x86-64. (Thanks to James Knight)
1269 * improvement to the MIPS backend from Thiemo Seufer: C-style
1270 64-bit long long arguments and return values to alien functions
1272 * fixed some bugs revealed by Paul Dietz' test suite:
1273 ** the type-error signalled from WARN has a filled-in DATUM slot.
1274 ** the type-error required when a stream is not associated with
1275 a file has the stream as its datum.
1276 ** type-errors on single-floats on x86-64 no longer have
1277 :INVALID-OBJECT as the datum
1278 ** the type-errors signalled for invalid function names now have
1279 a correct expected type
1280 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1281 for structures defined with a :TYPE. Documentation strings for
1282 typed structures are no longer immediately discarded
1283 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1284 broadcast streams and synonym streams. FILE-LENGTH now also works
1285 on broadcast streams.
1287 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1288 * incompatible change: the --noprogrammer option, deprecated since
1289 version 0.7.5, has been removed. Please use the equivalent
1290 --disable-debugger option instead.
1291 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1293 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1294 inoperational for a while now) has been completely removed.
1295 * null lexical environments are now printed as #<NULL-LEXENV>,
1296 significantly reducing the amount of clutter in typical backtraces.
1297 * documentation on weak pointers, finalization, and after GC hooks
1298 has been added to the manual.
1299 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1300 as other specialized array types, is much faster. SUBSEQ and
1301 COPY-SEQ on such arrays have also been sped up.
1302 * optimization: EQL is now more efficient when at least other argument
1303 is known to be of type (OR FIXNUM (NOT NUMBER)).
1304 * fixed bug: the runtime is now less vulnerable to changes in the
1305 size of the SBCL object on OS X, and virtual memory is reserved for
1306 all spaces that need to be at a fixed address.
1307 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1308 * fixed bug: finalizers and after GC hooks that cause consing are now
1310 * fixed bug: compiler error messages and summaries are now printed to
1311 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1312 * fixed inference of the upper bound of an iteration variable.
1313 (reported by Rajat Datta).
1314 * fixed bug 211e: calling local functions with duplicated constant
1315 keyword argument no longer causes a bogus style warning about an
1317 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1318 ftype declaration to be disregarded. (reported by Dave Roberts)
1319 * fixed bug 373: caused by erronous compilation of references to alien
1320 variables in the runtime on ppc/darwin.
1321 * fixed bug 376: CONJUGATE type deriver.
1322 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1323 (reported by Baughn on #lisp)
1324 * a cross-compiler bug on non-x86 platforms has been identified and
1325 fixed. (thanks to Bruno Haible)
1326 * improvements to the MIPS runtime code for increased stability.
1327 (thanks to Thiemo Seufer)
1328 * increased the maximimum compact environment size to allow
1329 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1330 * partial workaround for bug 135: don't name the function we're
1331 calling for hairy cases of EVAL, so as not to accumulate one environment
1332 entry per call to EVAL. (reported by Kevin Reid)
1333 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1334 * optimization: type testing for non-vector arrays should be faster.
1335 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1337 * bug fix: setting 31st element of a bit vector to zero did not work
1339 * bug fix: redefining a class definition which failed due to a
1340 previous accessor / function clash now works (but see BUGS entry
1341 #380 for more problems in this area). (thanks to Zach Beane)
1342 * the long form of DEFINE-METHOD-COMBINATION disables method group
1343 checking when given a single method group with pattern *. (thanks
1345 * on x86 compiler supports stack allocation of results of simple
1346 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1347 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1348 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1349 * fixed some bugs related to Unicode integration:
1350 ** the restarts for recovering from input and output encoding
1351 errors only appear when there is in fact such an error to
1353 * fixed some bugs revealed by Paul Dietz' test suite:
1354 ** MISC.549 and similar: late transformation of unsafe type
1355 assertions into derived types caused unexpected code
1357 ** SCALE-FLOAT type deriver is less wrong.
1358 ** type derivers for EXP, LOG and similar functions compute result
1359 types for complex arguments better.
1360 ** (MISC.563) CONJUGATE type deriver works for very restricted
1362 ** out-of-line type testers for character strings are available.
1363 ** EQUAL compiler transform understands specialness of objects
1365 ** accessing double-floats stored on the stack now works on x86-64.
1366 ** debugger internals could sometimes create invalid lispobjs,
1367 resulting in GC crashes.
1368 ** MISC.548: type check weakening can convert required type into
1370 ** initialization forms for bindings are not in scope of free special
1373 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1374 * incompatible change: thread support for non-NPTL systems has
1375 been removed - locking is buggy and unreliable. A threaded
1376 SBCL build will now warn at startup and refuse to create
1377 new threads, unless futex support is detected in the kernel
1378 * incompatible change: the top level REPL now has only an ABORT
1379 restart associated with it, not TOPLEVEL and ABORT as it used to.
1380 TOP and TOPLEVEL are now available as debugger commands for
1381 returning to the top level.
1382 * incompatible change: forms evaluated in the REPL now use the
1383 global optimization policy.
1384 * incompatible change: user- and system-initialization files are
1385 no longer processed with LOAD, but by READ and EVAL; hence the
1386 global optimization policy, startup package, readtable, etc,
1388 * The .fasl file format number has been incremented because of
1389 various incompatible changes.
1390 * internal entry point details and argument counts no longer appear
1391 in backtraces unless explicitly requested by setting
1392 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1393 * built-in and standard functions no longer have names like "top
1394 level local call to FOO".
1395 * fixed bug 32: functions defined in non-null lexical environments
1396 now have more legible printed representation
1397 * fixed bug 33: functions defined in non-null lexical environemnts
1398 are now more amenable to inspection by INSPECT.
1399 * workaround for bug 354: XEPs no longer appear in backtraces unless
1400 explicitly requested.
1401 * fixed bug: receiving the signal which results from attempting to
1402 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1403 SIGBUS on other *BSDs) on architectures where the C stack is also
1404 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1405 to debugger confusion or wild instability. (reported by Cheuksan
1407 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1408 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1409 (reported by Lutz Euler)
1410 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1411 compiled code. (reported by Paul Dietz)
1412 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1413 specialized parameter to a method to something that is not TYPEP
1414 the specializer is now possible.
1415 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1416 face of package deletion.
1417 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1418 pathname. (reported by David Tolpin on c.l.l)
1419 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1420 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1421 STRING-STREAM and FILE-STREAM, respectively.
1422 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1423 than previously; in addition, its test suite is now run on build.
1424 (thanks to Luke Gorrie)
1425 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1426 * optimization: added a immediate representation for single-floats
1428 * fixed some bugs revealed by Paul Dietz' test suite:
1429 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1430 ** attempting to create a package with a colliding nickname causes
1431 correctable errors to be signalled.
1432 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1433 ** several x86-64 backend bugs related to sign-extension of immediate
1436 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1437 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1438 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1440 * fixed loading of multiply forward-referenced layouts.
1441 (thanks to Cheuksan Wang)
1442 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1443 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1444 (see COMPILE-FILE documentation for details of :PRINT option)
1445 * fixed bugs 19 and 317: fixed-format floating point printing is
1446 more accurate. This also fixes a bug reported by Adam Warner
1447 related to the ~@F format directive.
1448 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1450 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1451 dispatch table if the from-char is a dispatch macro character.
1452 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1453 by the wordsize no longer ignore the last word. (reported by Lutz
1455 * fixed bug in type checking of dynamic-extent variables. (reported
1457 * optimization: sequence traversal functions use their freedom to
1458 coerce function designators to functions.
1459 * optimization: code with many calls to CLOS methods specialized on
1460 CLOS classes has had redundant type checks removed.
1461 * optimization: added declarations to speed up operations that access
1462 the internal character database (for example STRING-UPCASE)
1463 * optimization: comparison operations between floats and sufficiently small
1464 fixnums no longer create extra rationals
1465 * fixed some bugs related to Unicode integration:
1466 ** portions of multibyte characters at the end of buffers for
1467 character-based file input are correctly transferred to the
1468 start of the buffer at the next read.
1469 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1470 passing it through to OPEN.
1471 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1472 argument given to internal calls to OPEN.
1473 ** the built-in comment readers (introduced by character sequences
1474 ";" and "#|") are more forgiving to encoding errors; they will
1475 STYLE-WARN and then attempt to resync the stream at a character
1476 boundary. (thanks to Teemu Kalvas)
1477 * fixed some bugs in the x86-64 port:
1478 ** Negative short int return values from c-calls are sign-extended
1480 ** The stack is aligned to 16-bytes for c-calls, as required by
1481 the ABI. (thanks to Cheuksan Wang)
1482 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1483 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1484 for enums. (thanks to Vincent Arkesteijn)
1485 ** Multiple small optimizations and bugfixes for floating point
1487 * fixed some bugs revealed by Paul Dietz' test suite:
1488 ** Space, Tab, Linefeed, Return and Page have the invalid
1489 secondary constituent character trait.
1490 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1492 ** WITH-INPUT-FROM-STRING should only update the index place on
1494 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1495 works more reliably.
1496 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1497 with one-dimensional arrays with fill pointers.
1498 ** TYPE-OF failed on a complex with an integer realpart and a
1500 ** compiler failure during type inference for the code of form
1501 (IF (EQL X (THE ...)) ...) (MISC.535).
1503 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1504 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1505 platform. The port supports 61-bit fixnums, large memory spaces
1506 and reloading shared object files.
1507 * enhancement: saving cores with foreign code loaded is now
1508 supported on ppc/Darwin in addition to the previously supported
1510 * enhancement: the statistical profiler now walks deeper into the
1511 call stack for more meaningful call-graphs and accrued time
1512 reports (x86/x86-64 only). It also now reports time spent in
1514 * enhancement: it is now possible to trace most individual methods
1515 of a generic function in addition to tracing the generic function
1517 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1519 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1520 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1521 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1522 produces an error. (thanks to Vincent Arkesteijn)
1523 * bug fix: NAMESTRING on pathnames with :WILD components in their
1524 directories works correctly. (thanks to Artem V. Andreev)
1525 * fixed bug 125: compiler preserves identity of closures. (reported
1527 * bug fixed: functions with &REST arguments sometimes failed with
1528 "Undefined function" when compiled with (DEBUG 3). (reported by
1530 * bug fix: overflow during compiling of setting element of a bit
1531 vector with constant index and value. (reported by Timmy Douglas)
1532 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1533 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1534 * on x86 compiler partially supports stack allocation of dynamic-extent
1536 * GO and RETURN-FROM do not check the extent of their exit points
1537 when compiled with SAFETY 0.
1538 * fixed some bugs related to Unicode integration:
1539 ** encoding and decoding errors are now much more robustly
1540 handled; it should now be possible to recover even from invalid
1541 input or output to the terminal. (thanks to Teemu Kalvas)
1542 ** provided a first cut at implementing STRING-TO-OCTETS and
1543 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1544 ** altered the SB-MD5 contributed module slightly, changing the
1545 interface just enough for it to be supportable for builds where
1546 lisp characters are not eight bits.
1547 * fixed some bugs revealed by Paul Dietz' test suite:
1548 ** the FORMATTER-generated functions for ~V[ conditionals require
1549 the correct number of arguments.
1550 ** READ-FROM-STRING returns the mandated second value when applied
1551 to displaced strings.
1552 ** the #\Rubout and #\Backspace characters are treated as invalid
1553 constituent characters by the tokenizer.
1555 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1556 * new feature: reloading changed shared object files with
1557 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1558 * new feature: references to foreign variables and functions
1559 can now be compiled and loaded before the corresponding shared
1560 object file is loaded, as long as the foreign definitions are
1561 available at runtime.
1562 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1563 supported. (thanks to Dan Debertin)
1564 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1565 just keywords. (thanks to Vincent Arkesteijn)
1566 * fixed bug #331: structure-class instances corresponding to
1567 DEFSTRUCT forms are now created eagerly.
1568 * fixed bug #345: backtraces from calls to undefined functions work
1569 on x86 as well. Related bug #61 is now also partially fixed on x86
1570 (backtraces from throws to unknown catch tags.)
1571 * bug fix: lambda-list parsing is now stricter vrt. order and number
1572 of lambda-list keywords.
1573 * bug fix: as specified by AMOP, an error is signalled if a
1574 class-option appears multiple times in a DEFCLASS form. (reported
1576 * bug fix: RANDOM can be compiled when the compiler derives the type
1577 of its numeric argument as a disjoint set of small integers.
1578 (reported by Paul Dietz)
1579 * bug fix: starting a core saved with shared objects loaded when
1580 those objects are not available no longer causes threaded SBCL to
1581 hang. (reported by Sean Ross)
1582 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1584 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1585 argument, which must always be NIL. (reported by Kalle Niemitalo)
1586 * bug fix: printing 1.0d+23 no longer results in an error.
1587 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1588 * bug fix: structure slot setters preserve evaluation order. (thanks
1590 * fixed some bugs related to Unicode integration:
1591 ** RUN-PROGRAM can allow its child to take input from a Lisp
1592 stream. (reported by Stefan Scholl)
1593 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1594 locales. (reported by Ken Causey)
1595 * fixed some bugs revealed by Paul Dietz' test suite:
1596 ** INCF, DECF and REMF evaluate their place form as specified in
1598 ** FORMATTER expands ~{ ~} iteration directives with V or #
1599 parameters correctly.
1600 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1601 consequent uses no arguments correctly.
1602 ** the system has a partial understanding of the (COMPLEX RATIO)
1604 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1607 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1608 * new feature: a build-time option (controlled by the :SB-UNICODE
1609 keyword feature, enabled by default) for building the system with
1610 support for the entire 21-bit character space defined by the
1612 * new feature: the system now has rudimentary external-format
1613 support; the primary user-visible change at this time is that
1614 characters with the high bit set (such as lower-case-e-acute) will
1615 print correctly to a terminal in a UTF-8 environment.
1616 * minor incompatible change: BASE-CHAR no longer names a class;
1617 however, CHARACTER continues to do so, as required by ANSI.
1618 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1619 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1620 has been moved to the SB-EXT package (temporarily re-exported from
1622 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1623 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1625 * fixed bug #351: better error-handlind and reporting for malformed
1627 * fixed bug #350: bignum-printing is now more memory-efficient,
1628 allowing printing of very large bignums, eg. (expt 2 10000000).
1629 (reported by Bruno Haible)
1630 * fixed bug #302: better primitive-type selection for intersection
1632 * fixed bug #308: non-graphic characters now all have names, as
1633 required. (reported by Bruno Haible)
1634 * bug fix: redefining a class with different superclasses now correctly
1635 removes it from the direct-subclasses of its previous superclasses.
1636 (reported by David Morse)
1637 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1638 new value now works. (reported by Bruno Haible)
1639 * bug fix: correct canonicalization of multiple non-standard slot
1640 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1641 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1642 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1643 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1644 now exists, an signals an error.
1645 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1646 during macroexpansion for non-iteration variables as well. (reported
1647 by Bruno Haible for CMUCL)
1648 * bug fix: Cyclic structures and unprintable objects in compiler
1649 messages no longer cause errors. (reported by Bruno Haible)
1650 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1651 and READ-FROM-STRING all now return a primary value of NIL if
1652 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1653 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1654 (reported by Bruno Haible for CMUCL)
1655 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1656 do not designate a condition. (reported by Bruno Haible for
1658 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1659 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1660 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1661 permitting resolution in favour of any of the conflicting symbols.
1662 (reported by Bruno Haible for CMUCL)
1663 * bug fix: EQUAL compiler optimizations is less aggressive on
1664 strings which can potentially compare true despite having distinct
1665 specialized array element types.
1666 * bug fix: unit enumerations can be defined without dividing by
1667 zero. (thanks to Vincent Arkesteijn)
1668 * FORMAT compile-time argument count checking has been enhanced.
1669 (report from Bruno Haible for CMUCL)
1670 * a partial workaround for the bug 262: the compiler does not try to
1671 inline-expand a local function doing RETURN-FROM from a deleted
1672 BLOCK. (thanks to Peter Denno for the bug report and to David
1673 Wragg for the simple test case)
1674 * fixed some bugs revealed by Paul Dietz' test suite:
1675 ** RENAME-PACKAGE allows all package designators as new package
1677 ** constraint propagation and lambda variable substitution are
1678 more cautious in dealing with partially deleted code.
1679 ** compiler sometimes lost reoptimization passes.
1680 ** CERROR, given a condition as condition designator, passes its
1681 remaining arguments to the continue format control without
1683 ** Case-altering FORMAT directives work correctly on non-ASCII
1685 ** The REAL type specifier handles bounds outside the floating
1686 point ranges without signalling FLOATING-POINT-OVERFLOW.
1687 ** Functions with IR1-transformations can create intercomponent
1688 references to global functions.
1689 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1691 ** FORMAT ~R treats a nil value for its first parameter correctly.
1693 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1694 * enhancement: saving cores with foreign code loaded is now
1695 supported on x86/NetBSD and sparc/Linux in addition to the previously
1696 supported platforms.
1697 * bug fix: on some platforms repeated installations caused multiple
1698 copies of HTML documentation to be installed -- should not happen
1699 any more. (reported by Stefan Scholl)
1700 * bug fix: parsing self-recursive alien record types multiple times
1701 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1702 original patch by Helmut Eller for CMUCL)
1703 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1704 (thanks to Richard Kreuter)
1705 * bug fix: defining classes whose accessors are methods on existing
1706 generic functions in other (locked) packages no longer signals
1707 bogus package lock violations. (reported by François-René Rideau)
1708 * bug fix: special variables as DEFMETHOD parameters no longer have
1709 associated bogus type declarations. (reported by David Wragg and
1711 * bug fix: read-write consistency on streams of element-type
1712 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1713 * bug fix: redefiniton of the only method of a generic function with
1714 no DEFGENERIC no longer emits a full WARNING. In addition,
1715 redefinition of generic functions with no DEFGENERIC to an
1716 incompatible lambda list now signals an error. (thanks to Zach
1718 * bug fix: DEFGENERIC now works even when there's a function of the
1719 same name in an enclosing lexical environment. (thanks to Zach
1721 * fixed compiler failure, caused by instrumenting code during
1722 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1723 * optimization: added loop analysis and improved register allocation
1724 * fixed some bugs revealed by Paul Dietz' test suite:
1725 ** POSITION on displaced vectors with non-zero displacement
1726 returns the right answer.
1727 ** (SIMPLE-STRING) is a valid type specifier for sequence
1729 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1731 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1732 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1734 ** The justification version of the FORMAT ~< directive treats
1735 non-zero minpad parameter correctly.
1737 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1738 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1739 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1740 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1741 the supported interface.
1742 * new feature: Single-stepping of code compiled with DEBUG 2 or
1743 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1744 * new feature: saving cores with foreign code loaded is now
1745 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1746 Timothy Moore's work for CMUCL)
1747 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1748 parameters to * instead of NIL if no initform is supplied.
1749 (reported by Johan Bockgaard)
1750 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1751 correctly when FUNCALL appears as the car of the form. Note:
1752 despite this FUNCALL forms are not currently subject to
1753 compiler-macro expansion. (port of Raymond Toy's fix for the
1754 same from CMUCL, reported by Johan Bockgaard)
1755 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1756 (thanks for Teemu Kalvas)
1757 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1758 case instead of terminating the iteration (thanks for Julian
1759 Squires, Sean Champ and Raymond Toy)
1760 * bug fix: incorrect expansion of defgeneric that caused a style
1761 warning. (thanks for Zach Beane)
1762 * bug fix: slot accessor effective method computation works properly
1763 for classes with multiple non-standard applicable methods on
1764 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1765 * on x86 compiler supports stack allocation of results of LIST and
1766 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1767 CMUCL implementation by Gerd Moellmann)
1768 * fixed some bugs revealed by Paul Dietz' test suite:
1769 ** FORMAT strings with both the ~<~:;~> form of the justification
1770 directive and pretty-printing directives cause an error.
1772 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1773 * incompatible change: the internal functions
1774 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1775 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1776 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1777 instead of the old functions.
1778 * new feature: on platforms where "dladdr" is available foreign
1779 function names now appear in backtraces. (based on Helmut Eller's
1781 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1782 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1784 * documentation: ASDF manual is now distributed with SBCL.
1785 * bug fix: SBCL can now load its contributed modules with REQUIRE
1786 even if the system-provided entries have been removed from
1787 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1789 * bug fix: backtraces involving undefined functions or assembly
1790 routines are more informative. (thanks to Brian Downing)
1791 * bug fix: mutually referent alien structures now work correctly.
1792 (reported by Rick Taube)
1793 * bug fix: structures defined by WITH-ALIEN can be referred to
1794 within other definitions in the same WITH-ALIEN.
1795 * bug fix: division operators (MOD, TRUNCATE and the like) with
1796 constant zero divisors and integer dividends no longer generate
1798 * bug fix: provide default methods for INPUT-STREAM-P and
1799 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1800 * bug fix: improve the detection and resolution of MOP metacycles
1801 (where effective method computation depends on the generic function
1802 having its effective method computed). (reported by Bruno Haible)
1803 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1804 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1805 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1806 * bug fix: pathnames with relative directory components can be
1807 represented relative to default pathnames.
1808 * optimization: in taking the GCD of bignums, reduce the two bignums
1809 to approximately the same size (using Euclid's algorithm) before
1810 applying the more sophisticated binary GCD. (thanks to Juho
1812 * optimization: COUNT on bitvectors now operates word-at-a-time.
1813 * optimization: ASH with a positive, but not necessarily constant,
1814 (leftwards) shift, when in a modular context, is compiled to a
1816 * fixed some bugs revealed by Paul Dietz' test suite:
1817 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1818 if the corresponding argument is NIL.
1819 ** FORMAT directives accepting a minpad parameter treat negative
1821 ** literal commas as character parameters to FORMAT directives are
1823 ** literal spaces directly after ~<Newline> directives within a
1824 format-logical-block (~:< ~@:>) do not induce :FILL-style
1825 conditional newlines.
1826 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1827 as specified: it no longer includes conditional newlines).
1828 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1830 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1831 :PER-LINE-PREFIX argument does not evaluate to a string.
1833 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1834 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1835 the manual for details; for now, package locks can be disabled by
1836 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1837 if no major problems are found then it is likely that they will be
1838 compiled in unconditionally.
1839 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1840 unsupported operators on all platforms. To load a shared library
1841 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1842 object file, link it into a shared library outside of SBCL and
1843 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1845 * bug workaround: ROOM T and the GC were not working together
1846 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1847 reporting facility aren't preserved. That reporting has been
1848 disabled, so now until and unless someone figures out how to make it
1849 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1850 * minor incompatible change: as threatened around sbcl-0.8.0, the
1851 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1852 The symbols are also exported from SB-PCL for backwards
1853 compatibility, but more so than before SB-PCL should be treated as
1854 an implementation-internal package.
1855 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1857 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1858 It is known as of this release not to work on the Alpha, however.
1859 * fixed bug #167: errors signalled due to illegal syntax in method
1860 bodies are now more legible.
1861 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1862 designators and can hence be used with TYPEP.
1863 * fixed bug #333: CHECK-TYPE now ensures that the type error
1864 signalled, if any, has the right object to be accessed by
1865 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1866 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1867 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1869 * fixed bug #334: programmatic addition of slots using specialized
1870 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1871 and :ALLOCATION :CLASS slots.
1872 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1873 float exponents. (rereported by Peter Seibel)
1874 * fixed a bug: #\Space (and other whitespace characters) are no
1875 longer considered to be macro characters in standard syntax by
1876 GET-MACRO-CHARACTER.
1877 * fixed bug: initialization of condition class metaobjects no longer
1878 causes an instance of the condition to be created. (reported by
1880 * fixed bug: it is now possible to have slots such that
1881 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1882 description is neither :INSTANCE nor :CLASS.
1883 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1884 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1885 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1886 non-standard SLOT-DEFINITION-ALLOCATION values.
1887 * fixed bugs: various race conditions handling exiting threads.
1888 CL-PPCRE's thread torture test now passes.
1889 * fixed arguably-a-bug: GC time proportional to number of threads in
1890 system even when most of them are idle
1891 * optimization: improved performance of BIT and SBIT on bit-vectors.
1892 * .fasl file incompatibility: The fasl file version number has
1893 been incremented because of changes associated with package locks.
1895 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1896 * minor incompatible change: the system no longer provides
1897 optimization hints (conditions which are TYPEP
1898 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1899 mode; these hints are still emitted when higher SPEED optimization
1901 * new contrib module: a sampling profiler (profiling by statistical
1902 sampling, rather than by instrumenting functions) is available as
1903 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1904 * the behaviour of the standard function ED is now customizeable by
1905 third parties through a hook variable: see ED's documentation
1906 string for information on the protocol.
1907 * the compiler no longer emits efficiency notes for (FUNCALL X)
1908 when the type of X is uncertain under default optimization
1910 * fixed bug 276: mutating a binding of a specialized parameter to a
1911 method to something that is not TYPEP the specializer is now
1913 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1914 exhibit the required behaviour on the x86 platform. (thanks to
1915 Peter van Eynde, Eric Marsden and Bruno Haible)
1916 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1917 even for difficult arguments. (reported by Peter Graves)
1918 * fixed bug 141a: the backquote printer now descends quoted
1920 * fixed another bug in backquote printing: no more destructive
1921 modification of the form's list structure. (reported by Brian
1923 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1924 move between its address being taken and the call to
1925 interrupt_thread, fixing a crashing race condition.
1926 * the SB-POSIX contrib implementation has been adjusted so that it
1927 no longer exhibits ridiculously poor performance when constructing
1928 instances corresponding to C structs.
1930 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1931 * minor incompatible change: the sb-grovel contrib now treats C
1932 structures as alien (in the sense of SB-ALIEN) objects rather than
1933 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1934 has implications for memory management of client code
1935 (sb-grovel-returned objects must now be manually managed) and for
1936 type safety (alien objects now have full types).
1937 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1938 used to control emission of compiler diagnostics, rather than the
1939 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1940 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1941 quality should be considered deprecated.
1942 * install.sh now installs the user manual as well
1943 * (not quite a new documentable feature, but worth considering in
1944 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1945 beginnings of a semantically meaningful condition hierarchy is
1946 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1948 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1949 designator as the defaults argument.
1950 * fixed bug: Displaced arrays whose displaced-to array has become
1951 too small now cause ARRAY-DIMENSION to signal an error, providing
1952 for safer bounds-checking. (reported by Bruno Haible)
1953 * fixed bug: DEFCLASS slot definitions with identical :READER and
1954 :WRITER names now signal a reasonable error. (reported by Thomas
1956 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1958 * fixed bug: Invalid slot specification errors now print correctly.
1959 (thanks to Zach Beane)
1960 * fixed bug 320: Shared to local slot value transfers in class
1961 redefinitions now happen corrently from superclasses as
1962 well. (reported by Bruno Haible)
1963 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1965 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1966 improper lists correctly. (reported by Bruno Haible)
1967 * fixed bug 313: source-transform for <fun-name> was erroneously
1968 applied to a call of a value of a variable with name <fun-name>.
1969 (reported by Antonio Menezes Leitao)
1970 * fixed bug 307: The obsolete instance protocol ensures that
1971 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1972 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1973 remove dead unknown-values globs from the middle of the stack.
1974 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1975 easier to resume long computations after using *BREAK-ON-SIGNALS*
1976 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1977 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1978 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1979 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1980 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1981 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1983 * fixed a (fairly theoretical) bug in string printing: if
1984 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1985 does not have array-element-type equal to the most general string
1987 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1988 function name. (thanks to Nikodemus Siivola)
1989 * fixed bug: compile-time format string checker failed on
1990 non-closed ~{. (reported by Thomas F Burdick)
1991 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1992 don't warn on legal loop code involving more than one aggregate
1993 boolean. (thanks to Nikodemus Siivola)
1994 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1995 in keyword position to MAKE-PACKAGE was not being reported as
1997 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1998 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2000 * fixed bugs 280 and 312: the checking for multiple definitions in a
2001 file is less likely to become confused by uses of inline
2003 * fixed bug: the #S reader macro performs the keyword coercion
2004 specified for slot names. (reported by Kalle Niemitalo)
2005 * fixed bug: lambda lists may contain symbols whose names start with
2006 & but are not lambda-list-keywords; their occurrence triggers a
2008 * fixed bug 321: define-method-combination argument lambda lists do
2009 not cause invalid code to be generated when &optional or &aux
2010 variables have default values. (reported by Bruno Haible)
2011 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2012 have CLOS classes; this appears also to have fixed reported
2013 instability in stack exhaustion detection.
2014 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2015 MUFFLE-WARNING when no associated restart is present is now
2017 * optimization: rearranged the expansion of various defining macros
2018 so that each expands into only one top-level form in a
2019 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2021 * optimization: used a previously little-used slot in symbols to
2022 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2024 * fixed some bugs revealed by Paul Dietz' test suite:
2025 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2027 ** Fixed an optimization bug related to inheritance of initforms
2028 from local to shared slots.
2029 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2030 ** CAST optimizer forgot to flush argument derived type.
2031 ** print/read consistency on floats is now orders of magnitude
2032 more likely. (thanks also to Bruno Haible for a similar report
2034 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2035 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2036 for objects of type REAL. Make it so.
2037 ** SXHASH is specified (infelicitously) to respect similarity,
2038 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2039 it so. (thanks to Markus Ziegler)
2040 ** on the Alpha, the compiler succeeds in compiling functions
2041 returning a known number of arguments greater than 63.
2042 ** fixed handling of invalid NIL arguments in keyword position
2044 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2046 ** provided a readably-printable representation for RANDOM-STATE
2048 ** ensured that pathnames, where they have a namestring, always
2049 print using #P"..." syntax.
2051 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2052 * Support for the forthcoming 2.0 version of the NetBSD kernel
2053 running on x86 hardware has been added. (thanks to Perry
2054 E. Metzger most immediately, and others for their past work)
2055 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2056 current release version; SBCL's OpenBSD support had been broken
2057 since about the time of OpenBSD's switch to ELF binary format.)
2058 * [placeholder for DX summary]
2059 ** user code with &REST lists declared dynamic-extent, under high
2060 speed or space and low safety and debug optimization policy.
2061 * The manual has been converted to Texinfo format and the debugger
2062 chapter from the cmucl manual has been added.
2063 * A facility has been added to extract documentation strings from
2064 sbcl and store them as Texinfo-formatted snippets for inclusion in
2065 the manual (via Texinfo's @include directive)
2066 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2067 the test case to Dave Roberts)
2068 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2069 pointers. (reported by Sean Ross)
2070 * bug fix: PROFILE output is printed nicely even for large numerical
2071 values. (thanks to Zach Beane)
2072 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2073 greater than 32 handle EOF correctly.
2074 * bug fix: on X86 an immediate argument of the IMUL instruction is
2075 correctly printed in disassembly. (thanks to Lutz Euler)
2076 * bug fix: class slots in redefined classes preserve their old
2077 values. (thanks to Bruno Haible and Nikodemus Siivola)
2078 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2079 succeeds. (reported by Marco Baringer)
2080 * fixed some bugs revealed by Paul Dietz' test suite:
2081 ** READ-SEQUENCE now works on ECHO-STREAMs.
2082 ** RATIONALIZE works more according to its specification. (thanks
2085 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2086 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2087 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2088 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2089 should matter to you only if you rebind the printer control
2090 variables and then find you want different bindings in the
2091 debugger than in the ordinary execution of your program.)
2092 * The runtime build system has been tweaked to support building
2093 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2094 assembler and linker. (thanks to Nikodemus Siivola)
2095 * Unbound, undefined, undeclared variables now trigger full
2096 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2097 more often programmer error than deliberate exploitation of undefined
2099 * optimization: the hash algorithm for strings has changed to one
2100 that is less vulnerable to spurious collisions. (thanks to Juho
2102 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2103 needless bounds checking. (thanks to Juho Snellman)
2104 * optimization: implemented multiplication as a modular
2105 (UNSIGNED-BYTE 32) operation on the PPC backend.
2106 * fixed some bugs revealed by Paul Dietz' test suite:
2107 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2109 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2110 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2111 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2113 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2115 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2117 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2118 their output stream on EOF from read.
2119 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2120 have been read to end-of-file.
2121 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2123 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2124 description of determination of which consecutive characters
2126 ** Printing the "Space" character with escaping on now yields "#\\ ",
2127 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2128 ** Reading floating-point numbers with *READ-BASE* set to a number
2129 less than 10 works correctly.
2130 ** Reading floating-point numbers with *READ-BASE* set to a number
2131 more than 10 works correctly.
2132 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2133 the readtable currently in effect.
2135 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2136 * minor incompatible change: parsing of namestrings on a physical
2137 (Unix) host has changed; numbers after the final #\. in a
2138 namestring are no longer interpreted as a version field. This is
2139 intented to be largely invisible to the user, except that the
2140 meaning of the namestring "*.*.*" has changed: it now refers to a
2141 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2142 should usually be replaced by
2143 (make-pathname :name :wild :type :wild :version :wild)
2144 with the added benefit that this is more likely to be portable.
2145 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2146 option to OPEN now signals an error if the file being opened
2147 exists; this may have an impact on existing code.
2148 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2149 signals received, on the PowerPC platforms (both Linux and
2150 Darwin). (thanks to Pierre Mai for pointing out the location of
2152 * several fixes on OS X: The system now builds and runs cleanly on
2153 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2154 (thanks to Brian Mastenbrook)
2155 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2156 second-resolution: integer multiples of 1/3600 between -24 and 24.
2157 (thanks to Vincent Arkesteijn)
2158 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2159 type when called with 1 argument; PEEK-CHAR checked type of
2160 PEEK-TYPE only after having read first character from a
2161 stream. (reported by Peter Graves)
2162 * bug fix: the garbage collector now has much better locality
2163 behaviour, and in particular no longer treats all memory as being
2164 exhausted when many small objects point to each other in a deeply
2166 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2167 recognized as being TYPEP their class.
2168 * bug fix: the PUSHNEW documentation string has been corrected.
2169 (thanks to Vincent Arkesteijn)
2170 * bug fix: defaulting of the value for the last of an atypically
2171 large number of multiple values being bound was not being
2172 performed correctly on the Alpha or PPC platforms
2173 * optimization: implemented multiplication as a modular
2174 (UNSIGNED-BYTE 32) operation on the x86 backend.
2175 * optimization: SEARCH on simple-base-strings can now be open-coded.
2176 (see also contrib/compiler-extras.lisp for inspiration for
2177 teaching the compiler about the Boyer-Moore algorithm).
2178 * value, returned by MAX (and MIN) called with several EQUALP, but
2179 not EQL, arguments now does not depend on compiler settings.
2180 * fixed some bugs revealed by Paul Dietz' test suite:
2181 ** in stack analysis liveness information is propagated from
2182 non-local entry points.
2183 ** pathwise CAST removing failed when the CAST node did not start
2185 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2186 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2188 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2189 host is already defined.
2190 ** RENAME-FILE works on streams instead of signalling an internal
2192 ** PEEK-CHAR uses the current readtable when determining whether
2193 or not a character is whitespace.
2194 ** MERGE-PATHNAMES handles the case when the pathname does not
2195 specify a name while the default-pathname specifies a version.
2196 ** Pathnames now stand a better chance of respecting print/read
2198 ** Attempting to use standardized file system operators with a
2199 pathname with invalid :DIRECTORY components signals a
2201 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2203 ** DIRECTORY on logical pathnames is more correct.
2204 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2205 signal a TYPE-ERROR if their argument is not a stream.
2206 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2207 designator argument does not designate a stream.
2208 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2209 examining the synonym.
2210 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2212 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2213 element-type larger than ([UN]SIGNED-BYTE 32).
2215 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2216 * When built with the :SB-FUTEX feature, threaded builds now take
2217 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2218 for faster/more reliable mutex and condition variable support.
2219 * Incompatible change (but one you probably shouldn't have been using
2220 anyway): the interface and code for arbitrating between multiple
2221 threads in the same user session has been redesigned.
2222 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2223 error when called without an explicit environment argument.
2224 (thanks to Nikodemus Siivola)
2225 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2226 confused about their position. (thanks to Adam Warner and Gerd
2228 * bug fix: Pretty printing backquoted forms with unquotations in the
2229 argument list position of various code constructs such as LAMBDA
2230 now works correctly. (reported by Paul Dietz)
2231 * bug fix: Pretty printing unquotations no longer loses all
2232 stream position information.
2233 * optimization: performance of string output streams is now less
2234 poor for multiple small sequence writes.
2235 * optimization: performance of CSUBTYPEP in the presence of complex
2236 expressions involving CONS and NOT many times has been improved.
2237 (reported by Paul Dietz)
2238 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2240 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2241 streams for the REPL, for the debugger, and so on. (thanks to
2243 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2244 * fixed some bugs revealed by Paul Dietz' test suite:
2245 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2246 is ignored if it is too small, rather than propagating through
2247 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2248 ** extremely complex negations of CONS types were not being
2249 sufficiently canonicalized, leading to inconsistencies in
2251 ** VALUES tranformer lost derived type.
2253 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2254 * fixed a bootstrapping bug: the build process no longer assumes
2255 that the various BOOLE-related constants have the same value in
2256 host and target lisps. (noted by Paul Dietz' test suite on an
2257 SBCL binary built from CLISP)
2258 * The system can now be dynamically linked on the MIPS platform,
2259 which enables dynamic loading of foreign code from Lisp. (thanks
2260 to Ralf Baechle for discussions on the MIPS ABI)
2261 * The system now records debugging information for its own source
2262 files in a filesystem-position-independent manner, relative to
2263 the "SYS" logical host.
2264 * fixed a compiler bug: MV-LET convertion did not check references
2265 to the "max args" entry point. (reported by Brian Downing)
2266 * tweaked disassembly notes to be less confident about proclaiming
2267 some instruction as an LRA. (thanks to Brian Downing)
2268 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2269 now each have their own history, command character, and other
2270 characteristics. (thanks to David Lichteblau)
2271 * fixed some bugs revealed by Paul Dietz' test suite:
2272 ** compiler failure in compiling LOGAND expressions including a
2274 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2275 shift greater than 32.
2276 ** FLUSH-DEST did not mark blocks for type check regeneration.
2277 ** HANDLER-CASE failed to accept declarations in handler clauses
2278 in some circumstances.
2280 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2281 * New code in contrib/sb-introspect (still probably not entirely
2282 stable yet) provides some support for smart Lisp development
2283 environments like SLIME.
2284 * The conditions signalled for errors occurring when loading .fasl
2285 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2286 in a way which should help ASDF recover gracefully.
2287 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2288 stuff has been cleaned up. If you code contrib/ stuff, this might
2289 affect you, and you can look at contrib/README, contrib/STANDARDS,
2290 and/or the 0.8.4.27 diff to check.
2291 * In full calls the compiler now does not generate checks for declared
2292 argument types for all arguments.
2293 * various threading fixes
2294 ** and some experimental patches which didn't make it into
2295 the main tree for this release, but which are shipped in
2296 contrib/experimental-thread.patch as a possible fix for some
2297 failures (deadlock, spinning...) in GC-intensive multithreaded
2299 * fixed PPC build problem (source code incompatibility of different
2300 library versions): added offsetof() hackery which attempts to divine
2301 where glibc maintainers put uc_mcontext today
2302 * fixed bug 282: compiler does not trust type assertions while passing
2303 arguments to a full call.
2304 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2305 &OPTIONAL VALUES type parameter.
2306 * fix bug 214: algorithm for noting rejected templates is now more
2307 similar to that of template seletion. (also reported by rydis on
2309 * fixed bug 141b: printing backquoted information readably and prettily
2310 inserts a space where necessary.
2311 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2312 (CHARACTER 10) are now reported as errors, rather than propagated
2313 as unknown types. (reported by piso on #lisp)
2314 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2315 with values NIL and :ERROR. (thanks to Milan Zamazal)
2316 * fixed bug 191c: CLOS now does proper keyword argument checking as
2317 described in CLHS 7.6.5 and 7.6.5.1.
2318 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2319 longer raise an error; further, using a list as a for-as-arithmetic
2320 counter now raises a meaningful error.
2321 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2322 now understood by sequence creation functions such as MAKE-SEQUENCE
2324 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2325 a STRING-INPUT-STREAM.
2326 * compiler enhancement: SIGNUM is now better able to derive the type
2328 * type declarations inside WITH-SLOTS are checked. (reported by
2330 * fixed some bugs revealed by Paul Dietz' test suite:
2331 ** incorrect optimization of TRUNCATE for a positive first
2332 argument and negative second.
2333 ** compiler failure in let-convertion during flushing dead code.
2334 ** compiler failure while deriving type of TRUNCATE on an
2335 interval, containing 0.
2336 ** ASH of a negative bignum by a negative bignum count now returns
2338 ** intersection of CONS types now canonicalizes properly, fixing
2339 inconsistencies in SUBTYPEP.
2341 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2342 * incompatible change: The --disable-debugger command line
2343 option now clobbers the debugger at a more fundamental
2344 level, by redefining #'INVOKE-DEBUGGER instead of by
2345 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2346 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2347 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2348 enter the debugger REPL and then suffer recursive errors
2349 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2350 while under the new system, BREAK in --disable-debugger mode
2351 terminates the system just as an unhandled error would.
2352 * fixed compiler performance when processing loops with a step >1;
2353 * bug fix: DOCUMENTATION now retrieves generic function
2354 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2355 support has been systematized, and now supports the methods
2356 specified by ANSI, along with a default method and a method for
2357 slot documentation. (reported by Nathan Froyd)
2358 * bug fix: effective methods associated with a generic function are
2359 no longer cached over a change of that generic function's method
2360 combination. (reported by Andreas Fuchs)
2361 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2362 names a non-existent directory. (thanks to Andreas Fuchs)
2363 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2364 the PPC platform, lead to stack corruption; this has been fixed.
2365 (reported by Rainer Joswig)
2366 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2367 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2368 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2369 arithmetic in general, is now much more reliable on the PPC
2371 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2372 platform now returns the right answer.
2373 * optimization: restored some effective method precomputation in
2374 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2375 precomputation is now tunable.
2376 * optimization: compiler-internal data structure use has been
2377 reviewed, and changes have been made that should improve the
2378 performance of the compiler by about 20%.
2379 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2380 simple-base-strings and simple-bit-vectors is improved.
2381 * optimization: the optimization of 32-bit logical and arithmetic
2382 functions introduced in version 0.8.3 on the x86 has been
2383 implemented on the mips, ppc and sparc platforms; an
2384 implementation of the same facility, but for 64-bit arithmetic,
2385 has been added for the alpha.
2386 * microoptimization: the compiler is better able to make use of the
2387 x86 LEA instruction for multiplication by constants.
2388 * bug fix: in some situations compiler did not report usage of
2389 generic arithmetic in (SPEED 3) policy.
2390 * bug 145b fix: compiler used wrong type specifier while converting
2391 MEMBER-types to numeric.
2392 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2394 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2395 index argument now works properly on the Alpha platform.
2396 * bug fix: floating point exception treatment on the Alpha platform
2398 * bug fix: FILE-POSITION works much better on string input and
2399 output streams. (thanks to Nikodemus Siivola)
2400 * bug fix: many threading/garbage collection symptoms sorted.
2401 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2402 might be pseudo-atomic.
2403 * internal change: Stopping for GC is now done with signals not
2404 ptrace. GC is now done in whichever thread wanted it, instead of
2406 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2408 * bug fix: result form in DO is not contained in the implicit
2410 * incompatible change: ICR structure is changed; the value part of
2411 CONTINUATION is now called LVAR; corresponding functions are
2412 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2413 * added type deriver for ISQRT (thanks to Robert E. Brown).
2414 * bug fix: better support for loading from the command line when an
2415 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2417 * fixed some bugs revealed by Paul Dietz' test suite:
2418 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2419 ** ROUND and FROUND now give the right answer when given very
2420 small float arguments.
2421 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2423 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2424 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2425 ** LCM should return a non-negative integer.
2426 ** PARSE-INTEGER returned the index of a terminator instead of the
2427 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2428 ** PARSE-INTEGER returned an incorrect index being applied to a
2430 ** LCM with two arguments of 0 returns 0 rather than signalling
2432 ** unsigned addition of a 32-bit constant with the high bit set no
2433 longer causes an internal compiler error on the x86.
2434 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2435 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2436 with negative last argument.
2437 ** byte specifiers with zero size and position no longer cause
2438 an error during type derivation.
2439 ** bignum multiplication on the Alpha platform now returns the
2441 * porting: The system now builds on SuSE AMD64, although it still
2442 generates a 32-bit binary.
2443 * .fasl file incompatibility: The fasl file version number has
2444 been incremented (because of the changes to internal compiler
2445 data structures referred to above).
2447 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2448 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2449 more accurately, on the Darwin kernel running on PowerPC hardware.
2450 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2451 * Compiler code deletion notes now signal a condition of type
2452 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2453 an associated MUFFLE-WARNING restart.
2454 * The compiler now performs limited argument count validation of
2455 constant format strings in FORMAT, and where appropriate in ERROR,
2456 CERROR and WARN. (thanks to Gerd Moellmann)
2457 * New ASDF-INSTALL contrib can be used for automatic download and
2458 installation of third-party Lisp code from CCLAN or other sites
2460 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2461 which forces another thread to execute a function supplied by the
2463 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2464 now accept and act upon their :ELEMENT-TYPE keyword argument.
2465 (reported by Martin Atzmueller, Edi Weitz)
2466 * bug fix: FILE-POSITION now accepts position designators up to
2467 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2468 is the greater. (thanks to Patrik Nordebo)
2469 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2470 Kalle Olavi Niemitalo)
2471 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2472 printable. (reported by Eric Marsden)
2473 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2474 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2475 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2476 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2477 (thanks to Stig Sandoe)
2478 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2479 UNREAD-CHAR now correctly includes the unread character in the
2480 target sequence. (thanks to Gerd Moellmann)
2481 * bug fix in threaded builds: the system can now be suspended and
2482 resumed by shell job control with minimal disruption.
2483 * bug fixes in times and timezones >2038AD
2484 * better handling of "where is GNU make?" problem in build scripts
2485 (thanks to Nikodemus Siivola)
2486 * new optimization: inside a named function any reference to a
2487 function with the same name is considered to be a self-reference;
2488 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2489 optimization quality.
2490 * new optimization on x86: logical functions and + now have
2491 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2492 used when the result is truncated to 32 bits.
2493 * VALUES declaration is partially enabled.
2494 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2495 * fixed some bugs revealed by Paul Dietz' test suite:
2496 ** The system now obeys the constraint imposed by
2497 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2498 types form a lattice under type intersection.
2499 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2500 ** ASSOC now ignores NIL elements in an alist.
2501 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2502 and (1+ MOST-POSITIVE-FIXNUM) answers.
2503 ** The addition of a method with invalid qualifiers to a generic
2504 function does not cause an error to be signalled immediately;
2505 a warning is signalled, and the error is generated only on
2506 calling the generic function.
2507 * changed .fasl file version number, in part to add type codes for
2508 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2509 obscure ANSI requirements
2511 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2512 * fixed bug 148: failure to inline-expand a local function left
2513 garbage, confusing the compiler.
2514 * fixed bugs 3cd: structure slot readers perform type check if the
2515 slot can have an invalid value (i.e. it is either not initialized
2516 or can be written with a less specific slot writer).
2517 * bug fix: the compiler now traps array references to elements off
2518 the end of an array; previously, the bounds checking in some
2519 circumstances could go off-by-one.
2520 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2522 * type declarations for array element types now obey the description
2523 on the CLHS page "Declaration TYPE", as per discussions on
2524 sbcl-help around 2003-05-08. This means that a declaration
2525 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2526 declaration, all references to BAR will be asserted or assumed
2527 (with THE, so dependent on compiler policy) to involve objects of
2528 type FOO. Note that no such declaration is implied in
2529 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2530 * declared types of functions from the "Conditions"
2531 chapter. (reported by Paul Dietz)
2532 * bug fix: CERROR accepts a function as its first argument.
2533 * bug fix: NTH an NTHCDR accept a bignum as index
2534 arguments. (reported by Adam Warner)
2535 * optimization: character compare routines now optimize comparing
2536 against a constant character. (reported by Gilbert Baumann)
2537 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2538 argument now works properly on the MIPS platform.
2539 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2540 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2541 declared to have a functional type, does not cause an error
2543 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2544 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2545 * fixed bug: if last continuation of a deleted block has a
2546 destination, this destination should be deleted too. (reported by
2548 * fixed a bug in the bootstrap process: the host compiler's values
2549 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2550 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2551 test case from Patrik Nordebo)
2552 * improved the ability of the disassembler on the PPC platform to
2553 provide helpful disassembly notes.
2554 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2555 the class in more cases than previously.
2556 * bug fix: FILE-POSITION now understands :START and :END for
2557 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2558 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2559 8) data. (thanks to David Lichteblau)
2560 * bug fix: it is possible to add a method to a generic function
2561 without lambda list.
2562 * bug fix: reader failed to signal END-OF-FILE inside an
2563 object representation. (reported by Nikodemus Siivola)
2564 * fixed some bugs revealed by Paul Dietz' test suite:
2565 ** LAST and [N]BUTLAST should accept a bignum.
2566 ** condition slot accessors are methods.
2567 ** (VECTOR NIL) is a subtype of STRING.
2569 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2570 * minor incompatible change: some nonsensical specialized lambda
2571 lists (used in DEFMETHOD) which were previously ignored now signal
2573 * minor incompatible change: the system is now aware of the types of
2574 variables in the COMMON-LISP package, and will signal errors for
2575 most violations of these type constraints (where previously they
2576 were silently accepted).
2577 * minor incompatible change: COMPILE-FILE now uses the freedom
2578 afforded (ANSI 3.2.2.3) to use derived function types for
2579 functions defined in the same file. This also permits the system
2580 to warn on static type mismatches and function
2581 redefinition. (Currently it does not work with high DEBUG level.)
2582 * minor incompatible change: VALUES declaration is disabled.
2583 * When issuing notes, the compiler now signals a condition of type
2584 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2585 restart for use in user handlers. It is expected that the
2586 COMPILER-NOTE condition will eventually become a condition
2587 supertype to a hierarchy of note types, which will then be
2588 handleable in a similar fashion. However, at the moment, no such
2589 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2590 but it's an implementation detail, not a classification for the
2592 * Changes in type checking closed the following bugs:
2593 ** type checking of unused values (192b, 194d, 203);
2594 ** template selection based on unsafe type assertions (192c, 236);
2595 ** type checking in branches (194bc).
2596 * A short form of VALUES type specifier has ANSI meaning (it has
2597 increased the number of situations when SBCL cannot perform type
2599 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2600 keywords or constants is permissible.
2601 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2602 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2603 classes. (thanks to Antonio Martinez)
2604 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2605 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2606 argument to a pretty-print stream. Instead, it leaves any such
2607 operations to DESCRIBE-OBJECT methods.
2608 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2610 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2611 lambda lists. (thanks to David Lichteblau)
2612 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2613 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2614 (thanks to Gerd Moellmann)
2615 * fixed bug 246: increased compilation speed of long
2616 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2618 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2620 * DEFCONSTANT now throws a condition of type
2621 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2622 constant to a non-EQL value; CONTINUE and ABORT restarts
2623 respectively change and preserve the value.
2624 * fixed bug 63: The code walker, part of the implementation of CLOS,
2625 is now better at handling symbol macros.
2626 * bug fix: There is no longer an internal implementation type named
2627 CL:LENGTH. (reported by Raymond Toy)
2628 * bug fix: In macro-like defining macros/special operators the
2629 implicit block does not enclose the lambda list.
2630 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2631 enclosed in parentheses) are not suitable as type specifiers, and
2632 their use properly signals an error now.
2633 * bug fix: An argument count mismatch for a type specifier in code
2634 being compiled no longer causes an unhandled error at compile
2635 time, but signals a compile-time warning.
2636 * fixed simple vector readable printing
2637 * bug fix: DESCRIBE takes more care over whether the class
2638 precedence list slot of a class is bound before accessing it.
2639 (reported by Markus Krummenacker)
2640 * bug fix: FORMATTER can successfully compile pretty-printer format
2641 strings which use variants of the ~* directive inside.
2642 * bug fix: SEARCH now applies its TEST predicate to the elements of
2643 the arguments in the correct order. (thanks to Wolfhard Buss)
2644 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2645 in type inference. (thanks to Robert E. Brown)
2646 * bug fix: Reading in symbols with an explicit package name of ""
2647 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2648 * fixed some bugs revealed by Paul Dietz' test suite:
2649 ** NIL is now allowed as a structure slot name.
2650 ** Arbitrary numbers, not just REALs, are allowed in certain
2651 circumstances in LOOP for-as-arithmetic clauses.
2652 ** Multiple class redefinitions before slot access no longer
2653 causes a type error.
2654 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2655 association between the name and a class.
2656 ** Generic functions with non-standard method-combination and over
2657 five methods all of which return constants no longer return NIL
2658 after the first few invocations. (thanks to Gerd Moellmann)
2659 ** CALL-NEXT-METHOD with no arguments now passes the original
2660 values of the arguments, even in the presence of assignment.
2661 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2663 ** DISASSEMBLE works with closures and funcallable instances.
2664 ** ADD-METHOD now returns the generic function, not the new method.
2665 ** FIND-METHOD signals an error if the lengths of the specializers
2666 is incompatible with the generic function, even if the ERRORP
2668 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2669 which its argument is a member.
2670 ** DEFCLASS only redefines the class named by its class-name
2671 argument if that name is the proper name of the class;
2672 otherwise, it creates a new class.
2673 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2674 of the UNBOUND-SLOT condition to the name of the slot.
2675 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2676 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2677 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2678 SLOT-MAKUNBOUND in the specified fashion.
2680 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2681 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2682 cross-compilation host. As a consequence, we can now bootstrap our
2683 way up to SBCL starting with a bare gcc toolchain and human-readable
2684 source code (first the source to CLISP, then the source to SBCL).
2685 * A contributed module containing a partial implementation of the
2686 simple-streams interface has been included. (thanks to Rudi
2688 * A contributed module implementing the RFC1321 Message Digest
2689 Algorithm, known as MD5, has been included.
2690 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2691 no longer has any effect, as the code controlled by this feature
2692 has been deleted. (As far as we know, no-one has ever built using
2693 this feature, and its semantics were confused in any case).
2694 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2695 work on conditions (as required by the ANSI specification),
2696 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2697 expected behaviour on conditions. Users should note, however,
2698 that such behaviour is not required by the ANSI specification,
2699 and so use of this behaviour may render their code unportable.
2700 * fixed some bugs revealed by Paul Dietz' test suite:
2701 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2703 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2704 ** SXHASH on condition objects no longer returns NIL.
2705 ** :ALLOCATION :CLASS slots are better treated; their values are
2706 updated on class redefinition, and initforms inherited from
2707 superclasses are applied.
2708 ** REMOVE-METHOD returns its generic function argument even when
2709 no method was removed.
2710 ** SHARED-INITIALIZE now initializes the values of the requested
2711 slots, including those with :ALLOCATION :CLASS.
2712 ** ALLOCATE-INSTANCE now works on structure classes defined via
2713 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2715 ** SLOT-EXISTS-P now works on conditions, as well as structures
2717 ** MAKE-LOAD-FORM now has the required methods on
2718 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2719 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2720 keyword, and now implements the SLOT-NAMES argument.
2721 ** methods with &OPTIONAL arguments no longer allow too many
2722 arguments to be passed in the call without error.
2723 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2724 option is consistent with the required arguments of the generic
2725 function lambda list.
2726 * bug fix: REQUIRE accepts a string designator. (Thanks to
2728 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2729 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2730 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2731 * bug fix: The compiler now checks for duplicated variables in macro
2733 * bug fix: SETQ on globals returns the correct value.
2734 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2735 not a COMPILER-ERROR (followed by some other strange error on
2736 choosing the CONTINUE restart).
2737 * bug fix: make.sh and friends are now more consistent in the way that
2738 they look for GNU "make".
2740 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2741 * experimental native threads support (on x86 Linux >=2.4 only).
2742 This is not compiled in by default: you need to add :SB-THREAD to
2743 the target features. See the "Beyond ANSI" chapter of the manual
2745 * fix for longstanding nonANSIism: The old distinction between
2746 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2747 The return value from CL:FIND-CLASS is now a CLOS class, and
2748 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2749 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2750 * An interface to the MetaObject Protocol, as described in Kiczales,
2751 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2752 MIT Press, 1991, is available from the SB-MOP package.
2753 * incompatible change: the SB-PCL package should now be considered
2754 a private implementation detail, and no longer a semi-private MOP
2756 * minor incompatible change: due to rearrangement for threads, the
2757 control stack and binding stack are now allocated at arbitrary
2758 addresses instead of being hardcoded per-port. Users affected by
2759 this probably have to be doing advanced things with shared
2760 libraries, and will know who they are.
2761 * minor incompatible change: Previously, all --eval forms used were
2762 processed with READ before any of them were processed with EVAL.
2763 Now each --eval form is processed with both READ and EVAL before
2764 the next --eval form is processed. (Thus package operations like
2765 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2766 work as the user might reasonably expect.)
2767 * minor incompatible change: *STANDARD-INPUT* is now only an
2768 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2770 * minor incompatible change: Y-OR-N-P is now character-oriented,
2771 not line oriented. Also, YES-OR-NO-P now works without errors.
2772 (thanks to Antonio Martinez)
2773 * sb-aclrepl module improvements: an integrated inspector, added
2774 repl features, and a bug fix to :trace command.
2775 * Known functions, which cannot be open coded by the backend, are
2776 considered to be able to check types of their arguments. (fixing
2777 a bug report by Nathan J. Froyd)
2778 * fixed a bug in computing method discriminating functions: It is
2779 now possible to define methods specialized on classes which have
2780 forward-referenced superclasses. (thanks to Gerd Moellmann)
2781 * fixed evaluation order in optional entries (reported by Gilbert
2783 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2784 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2785 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2786 required-by-AMOP NAME argument, as well as CLASS and
2787 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2788 * fixed bug 20: DEFMETHOD can define methods using names that are
2789 not the proper names of classes to designate class specializers.
2790 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2791 Unix file descriptors, instead of blowing up. (thanks to Antonio
2793 * Garbage collection refactoring: user-visible change is that a
2794 call to the GC function during WITHOUT-GCING will not do garbage
2795 collection until the end of the WITHOUT-GCING. If you were doing
2796 this you were probably losing anyway.
2797 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2798 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2799 TYPEP the latter but not the former.
2800 * The compiler issues a full WARNING for calls to undefined functions
2801 with names from the CL package.
2802 * MAP-INTO for a vector destination is open coded. (reported by
2803 Brian Downing on c.l.l)
2804 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2805 documentation string.
2806 * fixed some bugs revealed by Paul Dietz' test suite:
2807 ** COPY-ALIST now signals an error if its argument is a dotted
2809 ** Condition slots are now accessed more correctly in the presence
2810 of multiple initargs for a given slot.
2811 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2812 exclude restarts of the same name associated with a different
2814 ** DEFCLASS of forward-referenced classes with another
2815 forward-referenced class in the superclasses list no longer
2817 ** Condition slots are now initialized once each, not multiple
2818 times. (thanks to Gerd Moellmann)
2819 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2821 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2822 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2823 arguments contain duplicated elements.
2824 ** RESTART-CASE understands local macros.
2825 ** RESTART-CASE associates exactly its own restarts with a condition.
2826 ** ENDP in safe mode checks its argument to be of type LIST.
2827 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2828 in question is unbound.
2829 ** Optimized MAKE-INSTANCE functions no longer cause internal
2830 assertion failures in the presence of duplicate initargs.
2831 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2832 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2833 propagated even in the ctor optimized implementation of
2835 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2837 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2838 * a better implementation of SXHASH on (simple) bit vectors,
2839 measured both in execution speed and in distribution of results
2840 over the positive fixnums, has been installed. Likewise, a better
2841 implementation of EQUAL for simple bit vectors is now available.
2842 * fixed CEILING optimization for a divisor of form 2^k.
2843 * fixed bug 240 (emitting extra style warnings "using the lexical
2844 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2845 by Antonio Martinez)
2846 * fixed SXHASH, giving different results for NIL depending on type
2847 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2848 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2849 variable. (found by Rolf Wester)
2850 * SBCL does not ignore type declarations for special
2851 variables. (reported by rif on c.l.l 2003-03-05)
2852 * some bug fixes in contrib/sb-aclrepl/
2853 * fixed some bugs revealed by Paul Dietz' test suite:
2854 ** a bug in the CONS type specifier, whereby the CAR and CDR
2855 types got intertwined, has been fixed;
2856 ** the type system is now able to reason about the interaction
2857 between INTEGER and RATIO types more completely;
2858 ** APPEND, [N]REVERSE and NRECONC check that those their
2859 arguments, which must be proper lists, are really so;
2860 ** An array specialized to be unable to hold elements has been
2861 implemented, as required -- yes, really -- by ANSI;
2862 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2863 on malformed property lists;
2865 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2866 * incompatible packaging change: in line with Unix convention,
2867 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2868 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2869 * REQUIRE and PROVIDE are now optionally capable of doing something
2870 useful. See the documentation string for REQUIRE.
2871 * infrastructure for a managed SBCL contrib system: contributed
2872 modules in this release include:
2873 ** the ASDF system definition facility;
2874 ** an interface to the BSD Sockets API;
2875 ** an ACL-like convenience interface to the repl;
2876 (thanks to Kevin Rosenberg)
2877 ** an implementation of ROTATE-BYTE, with efficient implementation
2879 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2880 gives a closer approximation to the right answer than previously.
2881 (thanks to Raymond Toy)
2882 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2883 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2884 optional environment arguments, as required by ANSI.
2885 * fixed bugs in other functions taking environment objects, allowing
2886 calls with an explicit NIL environment argument to be compiled
2888 * fixed bug 228: primary return values from
2889 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2890 COMPILE or FUNCTION.
2891 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2892 :TYPE will no longer signal errors on innocuous objects.
2893 * fixed bug 231b: SETQ is better at respecting type declarations in
2894 the lexical environment.
2895 * fixed a bug in DEFCLASS: classes named by symbols with no or
2896 unprintable packages can now be defined.
2897 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2898 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2899 * fixed compiler failure related to checking types of functions.
2900 (reported by Robert E. Brown)
2901 * the compiler is now much more consistent in its error-checking
2902 treatment of bounding index arguments to sequence functions: in
2903 (SAFETY 3) code, errors will be signalled in almost all cases if
2904 invalid sequence bounding indices are passed to functions defined
2905 by ANSI to operate on sequences.
2906 * fixed a bug in the build procedure: documentation of SBCL-specific
2907 packages is now preserved and available in the final Lisp image.
2908 * lifted FDEFINITION lookup out of loops in the implementation of
2909 many list operations. (thanks to Robert E. Brown)
2910 * fixed a bug in the reader: the #n# reader macro now works for
2911 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2912 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2913 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2914 E. Brown and Tony Martinez respectively)
2915 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2916 SLOT-BOUNDP: in particular, it is now able to optimize them much
2917 better, and is now not vulnerable to having packages renamed.
2918 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2919 always called when a slot is not present in an instance. (thanks
2921 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2922 longer signal an error on unreading a character following EOF on
2923 the previous constituent stream. (thanks to Tony Martinez)
2924 * fixed some bugs revealed by Paul Dietz' test suite:
2925 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2926 not just nonnegative fixnums;
2927 ** the logical bit-array operators such as BIT-AND now accept an
2928 explicit NIL for their "opt-arg" argument (to indicate a
2929 freshly-consed result bit-array);
2930 ** ELT now signals an error on an invalid sequence index in safe
2932 ** the type system is now cleverer about negations of numeric
2933 types, and consequently understands the BIGNUM and RATIO types
2935 ** the type system is now cleverer about the interaction between
2936 INTEGER and RATIO types: while bugs still remain, many more
2937 cases are accurately computed;
2938 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2939 if it is in the last clause;
2940 ** CONSTANTLY now correctly returns a side-effect-free function in
2942 ** DECLARE is no longer treated as a special-operator; in
2943 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2944 * incremented fasl file version number due to the change in the
2945 DEFSTRUCT-SLOT-DESCRIPTION structure.
2947 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2948 * minor incompatible change: code processed by the "interpreter" or
2949 EVAL now has a compilation optimization policy of (DEBUG 2)
2950 (changed from (DEBUG 1)) to improve debuggability of interactive
2951 development, and to allow the use of the debug RETURN command in
2953 * an experimental implementation of the RETURN command for the
2954 debugger has been included. (thanks to Frederik Kuivinen)
2955 * fixed bug 62: constraints were not propagated into a loop.
2956 * fixed bug in embedded calls of SORT (reported and investigated by
2958 * fixed some bugs revealed by Paul Dietz' test suite:
2959 ** printing and reading of arrays with some dimensions having
2960 length 0 (thanks to Gerd Moellmann);
2961 ** BOA constructor with &AUX argument without a default value does
2962 not cause a type error;
2963 ** CONSTANTP now returns true for all self-evaluating objects.
2965 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2966 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2967 accessors that are related by inheritance, as specified in the
2968 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2969 Valtteri Vuorikoski)
2970 * The compiler is now able to inline functions that were defined in
2971 a complex lexical environment (e.g. inside a MACROLET).
2972 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2974 * Support for the upcoming FreeBSD-5.0 release has been included.
2975 (thanks to Dag-Erling Smorgrav)
2976 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2977 effect when it is not in a toplevel context.
2978 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2979 stand a better chance of being correct. (thanks to Gerd
2981 * fixed bug in COERCE, which now signals an error on coercing a
2982 rational to a bounded real type which excludes the expected
2984 * The compiler is now able to derive types more accurately from the
2985 COERCE and COMPILE functions.
2986 * fixed bug 223: functional binding is considered to be constant
2987 only for symbols in the CL package.
2988 * fixed bug 231: SETQ did not check the type of a variable being set
2989 (reported by Robert E. Brown)
2990 * A new optimization for MAKE-INSTANCE has been included, fixing
2991 various bugs (including relating to :ALLOCATION :CLASS slots and
2992 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2994 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2995 ** As required by ANSI, LOOP now disallows anonymous collection
2996 clauses such as COLLECT I in conjunction with aggregate boolean
2997 clauses such as THEREIS (= I 1);
2998 ** LOOP now signals an error when any variable is reused in the
2999 same loop (including the potentially useful construct analogous
3000 to WITH A = 1 WITH A = (1+ A);
3001 ** IT is only a special loop symbol within the first clause of a
3002 conditional loop clause;
3003 ** LOOP with a typed iteration variable over a hashtable now
3004 signals a type error iff it should.
3005 * fixed some other bugs revealed by Paul Dietz' test suite:
3006 ** FILE-STREAM now names the class previously known as FD-STREAM;
3007 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3008 argument) no longer signals an error;
3009 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3010 of the slot symbol, rather than using the current package
3011 ((:CONC-NAME "") continues to intern the slot's name in the
3013 * incremented fasl file version number, because of the incompatible
3014 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3015 of the new implementation of DEFINE-COMPILER-MACRO.
3017 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3018 * Support for building SBCL for MIPS platforms running in
3019 little-endian mode has now been checked in, and basic
3020 functionality on said platforms verified.
3021 * minor incompatible change: PCL now records the pathname of a file
3022 in which methods and the like are defined, rather than its
3024 * minor incompatible change: TRUENAME now considers the truename of
3025 a file naming a directory to be the pathname with :DIRECTORY
3026 component indicating that directory.
3027 * minor incompatible change: a NAMED clause in the extended form of
3028 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3029 reason for the previous behaviour is unclear.
3030 * more systematization and improvement of CLOS and MOP conformance
3031 in PCL (thanks to Gerd Moellman and Pierre Mai):
3032 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3034 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3035 primary methods with no specializers;
3036 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3038 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3039 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3040 FORWARD-REFERENCED-CLASSes; error reporting on
3041 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3043 ** SXHASH on CLOS instances now uses a slot internal to the
3044 instance to return different numbers on distinct instances,
3045 while preserving the same return value through invocations of
3047 ** DEFMETHOD signals errors when methods with longer incongruent
3048 lambda lists are added to generic functions;
3049 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3050 CLASS, as specified in AMOP;
3051 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3052 on the order returned by the primary method for classes of
3053 class STANDARD-CLASS;
3054 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3055 * fixed some bugs shown by Paul Dietz' test suite:
3056 ** DOLIST puts its body in TAGBODY;
3057 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3059 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3060 value producing form;
3061 ** if more variables are given to PROGV than values, extra
3062 variables are bound and made to have no value;
3063 ** NSUBSTITUTE on list arguments gets the right answer with
3065 ** ELT signals an error of type TYPE-ERROR when the index argument
3066 is not a valid sequence index;
3067 ** LOOP signals (at macroexpansion time) an error of type
3068 PROGRAM-ERROR when duplicate variable names are found;
3069 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3070 ** FUNCALL of special-operators now cause an error of type
3072 ** PSETQ now works as required in the presence of side-effecting
3073 symbol-macro places;
3074 ** NCONC accepts any object as its last argument;
3075 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3077 ** loop-for-as-package does not require a package to be explicitely
3079 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3081 * fixed bug 166: compiler preserves "there is a way to go"
3082 invariant when deleting code.
3083 * fixed bug 172: macro lambda lists with required arguments after
3084 &REST arguments now cause an error to be signalled. (thanks to
3086 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3087 bug. (thanks to Matthew Danish)
3088 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3090 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3091 arguments are lexically rebound. (thanks to Gerd Moellmann and
3093 * fixed bug 194: error messages are now more informative when there
3094 is no primary method applicable in a call to a generic
3095 function. (thanks to Gerd Moellmann)
3096 * fixed bug in command line argument checking (thanks to Julian
3098 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3099 (thanks to Matthew Danish)
3100 * incremented fasl file version number, because of the
3101 SXHASH-related changes in the layout of CLOS data structures
3103 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3104 * minor incompatible change: The runtime (the Unix executable named
3105 "sbcl") is now much pickier about the .core files it will load.
3106 Essentially it now requires .core files to descend from the same
3107 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3108 as the runtime does. (The intent is to prevent the crashes which
3109 can occur, and which can even be reported as mysterious failures,
3110 when people patch the sources or change the build parameters
3111 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3112 sbcl and .core files.)
3113 * fixed bug: VALUES-LIST is no longer optimized away.
3114 * fixed bug 142: The FFI conversion of C string values to Lisp
3115 string values no longer conses excessively. (thanks to Nathan
3116 Froyd porting Raymond Toy's fix to CMU CL)
3117 * began to systematize and improve MOP conformance in PCL (thanks to
3118 Nathan Froyd, Gerd Moellman and Pierre Mai):
3119 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3121 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3122 ** FINALIZE-INHERITANCE is now called on class finalization;
3123 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3124 argument precedence order.
3125 * fixed bug 202: The compiler no longer fails on functions whose
3126 derived types contradict their declared type.
3127 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3128 so it can be non-toplevel.
3129 * The fasl file version number has changed (because of the new
3130 implementation of DEFMACRO).
3131 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3132 safe code, that any length requirement by their type-specifier
3133 argument is valid. The exceptions to this are described in bug
3135 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3136 functions now check the types of their inputs as required by ANSI.
3137 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3138 introduced symbol is DECLAREd to be SPECIAL.
3139 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3140 * fixed bug: :COUNT argument to sequence functions may be negative
3141 * fixed bug: body of DO-SYMBOLS may contain declarations
3142 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3143 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3144 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3145 symbol macro only once
3146 * fixed printing of call frame when argument list is unavailable
3147 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3148 * compiler no longer signals WARNING on unknown keyword
3151 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3152 * A beta-quality port to the mips architecture running Linux,
3153 based on the old CMUCL backend, has been made. It has been tested
3154 on a big-endian kernel, and works sufficiently well to be able to
3155 rebuild itself; it has not been tested in little-endian mode.
3156 * fixed an inconsistency between gencgc.c and purify.c which made
3157 dumping/loading .core files unreliable
3158 * fixed bug 120a: The compiler now deals correctly with IFs where
3159 the consequent is the same as the alternative, instead of
3160 misderiving the return type. (thanks to Alexey Dejneka)
3161 * fixed bug 113: Logical pathnames are now dumpable (the logical
3162 host is resolved at load-time, throwing an error if it is not
3164 * fixed bug 174: FORMAT's error message is slightly clearer when a
3165 non-printing character is used in a format directive.
3166 * fixed several bugs in compiler checking of type declarations, i.e.
3167 violations of the Python "declarations are assertions" principle
3168 (thanks to Alexey Dejneka)
3169 * fixed several bugs in PCL's error checking (thanks to Gerd
3171 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3173 * fixed bug in compilation of functions as first class values
3174 (thanks to Antonio Martinez-Shotton)
3175 * The compiler's handling TYPE-ERRORs which it can prove will
3176 inevitably happen at runtime has been cleaned up and corrected
3177 in several ways. (thanks to Alexey Dejneka)
3178 * improved argument type checking for various basic arithmetic
3179 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3180 lavished on them in the past that they can be compiled in many
3181 ways in different special cases
3182 * fixed bug 181: compiler checks validity of user supplied type
3184 * cleaned up code flushing in optimization: Function calls which
3185 should signal errors for safety purposes (e.g. which ANSI says
3186 should signal errors when their arguments are of incorrect type)
3187 are no longer optimized away.
3188 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3189 * incremented fasl file version number, because changes in the
3190 implementation of sequence functions like COERCE caused
3191 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3192 in old inline expansions) to become undefined. (Actually these
3193 changes were later undone, so we might very well be binary
3194 compatible with 0.7.7 after all, but leaving the version number
3195 incremented seemed like the simplest and most conservative
3198 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3199 * An alpha-quality port to the parisc architecture running Linux,
3200 based on the old CMUCL backend, has been made. This, even more so
3201 than the other backends, should be considered still a work in
3202 progress; known problems include that the Linux kernel in 64-bit
3203 mode does not propagate the correct sigcontext structure to
3204 userspace, and consequently SBCL on a parisc64 kernel will not
3206 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3207 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3208 suppressed.) Also now that the compiler is looking at declarations
3209 in the environment, it checks optimization declarations as well,
3210 and suppresses inlining when (> DEBUG SPEED).
3211 * More fixes have been made to treatment of floating point exception
3212 treatment and other Unix signals. In particular, floating point
3213 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3214 * The detection and handling of control stack exhaustion (infinite
3215 or very deeply nested recursion) has changed. Stack exhaustion
3216 detection is now done by write-protecting pages at the OS level
3217 and applies at all optimization settings; when found, a
3218 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3219 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3220 be caught using IGNORE-ERRORS.
3221 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3222 correctly when transforming recursive LABELS functions to LETs.
3223 (thanks to Alexey Dejneka)
3224 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3225 that are names of constants or global variables.
3226 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3227 alien routines with docstrings.
3228 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3229 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3231 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3232 (thanks to Eric Marsden)
3233 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3234 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3235 * Bug fix: The SPARC backend can now compile functions involving
3236 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3237 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3238 to a functions expecting a PATHNAME-DESIGNATOR.
3239 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3240 lambda lists. (thanks to Alexey Dejneka)
3241 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3242 functions so that EXPORTing the name of the class doesn't cause
3243 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3244 to Antonio Martinez for reporting this)
3245 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3246 constant-folded without failing an assertion. (thanks to Einar
3247 Floystad Dorum for reporting this)
3248 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3249 types are now dealt with more correctly by the compiler.
3250 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3251 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3252 behaviour analogous to RENAME-FILE. This puts its behaviour more
3253 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3255 * The fasl file version number has changed again. (because of the
3256 bug fix involving the names of PCL MAKE-INSTANCE functions)
3258 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3259 * bug fix: Floating point exceptions are treated much more
3260 consistently on the x86/Linux and PPC/Linux platforms.
3261 * Array initialization with :INITIAL-ELEMENT is now much faster for
3262 cases when the compiler cannot open code the array creation, but
3263 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3264 array accesses have also seen a speed increase.
3265 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3266 specified. (This was at the root of some bad interactions between
3267 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3269 * bug fix: Internal error arguments for undefined functions are now
3270 computed correctly on the PPC/Linux platform.
3271 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3272 Raymond Toy's patch for CMU CL)
3273 * Support for the Solaris 9 operating environment has been included
3274 (thanks to Daniel Merritt)
3275 * A very ugly but hopefully complete draft of the missing FFI chapter
3276 of the manual has been created by reformatting the corresponding
3277 CMU CL manual chapter into (currently very ugly and incoherent)
3278 DocBook and bringing it up to date for SBCL behavior. Thus, the
3279 manual is now essentially complete, at least by my extreme
3280 once-and-only-once standards, whereby it's acceptable to refer to
3281 the doc strings of SB-EXT functions as the primary documentation.
3282 * The fasl file version number has changed again, due to cleanup of
3283 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3284 is no longer a static symbol.)
3286 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3287 * SBCL now builds with OpenMCL (version 0.12) as the
3288 cross-compilation host; also, more progress has been made toward
3289 bootstrapping under CLISP.
3290 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3292 * bug 158 fixed: The compiler can now deal with integer loop
3293 increments different from 1; fixing this turned out also to fix
3295 * bug 169 fixed: no more bogus warnings about using lexical bindings
3296 despite the presence of perfectly good SPECIAL declarations (thanks
3297 to David Lichteblau)
3298 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3299 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3300 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3302 * bug 180 fixed: Method combination specifications no longer ignore
3303 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3304 * bug fix: Structure type predicate functions now check their argument
3305 count as they should.
3306 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3307 correctly. (thanks to Pierre Mai)
3308 * minor incompatible change: The --noprogrammer option is deprecated
3309 in favor of the new --disable-debugger option, which is very similar.
3310 (The major difference is that it takes effect at a slightly different
3311 time at startup, causing handling of errors in --sysinit and
3312 --userinit files will be affected differently.) The
3313 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3314 been added to allow this functionality to be controlled from ordinary
3315 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3316 maintainers, who might want to run non-interactive scripts to
3317 build SBCL cores which will later be used interactively.)
3318 * minor incompatible change: The LOAD function no longer, when given
3319 a wild pathname to load, loads all files matching that pathname.
3320 Instead, an error of type FILE-ERROR is signalled.
3322 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3323 * bug 147 fixed: The compiler preserves its block link/count
3324 invariants more correctly now so that it doesn't crash. (thanks
3326 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3328 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3329 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3330 no-value-for-this-character as NIL (as specified by ANSI).
3331 * HOST-NAMESTRING on physical pathnames now returns a string that is
3332 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3333 (thanks to Christophe Rhodes)
3334 * The Alpha port handles icache flushing more correctly. (thanks to
3336 * More progress has been made toward bootstrapping under CLISP. (thanks
3337 to Christophe Rhodes)
3338 * The fasl file format has changed again, because dynamic loading
3339 on OpenBSD (which has non-ELF object files) motivated some cleanups
3340 in the way that foreign symbols are transformed and passed around.
3341 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3342 is no longer treated as whitespace by the reader, but instead as
3343 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
3344 |A
\x7fB|, instead of A as it used to.
3346 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3347 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3348 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3349 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3350 this as of 0.7.1.45, but was left out of the previous news section
3351 (thanks to Dan Barlow)
3352 * SBCL now runs on the Solaris operating system on SPARC architectures
3353 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3354 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3355 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3356 * SPARC backend cleanups, allowing builds of cores optimized for V8
3357 and V9 SPARCS, and also emission of code targeted to a particular
3358 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3360 * SBCL is closer to bootstrapping under CLISP, thanks to various
3361 fixes by Christophe Rhodes.
3362 * The fasl file format has changed again, to allow the compiler's
3363 INFO database to support symbol macros.
3364 * The user manual (in doc/) is formatted into HTML more nicely.
3365 (thanks to coreythomas)
3366 * The system is smarter about SUBTYPEP relationships, especially
3367 those involving NOT types (including types such as ATOM which are
3368 represented internally using NOT types). Thus SUBTYPEP is less
3369 likely to return (VALUES NIL NIL) in general, and in particular
3370 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3372 * The fasl file format has changed again, because the internal
3373 representation of types now includes a new slot to support the new
3374 SUBTYPEP-of-NOT-types logic.
3375 * (not a change in the main branch of SBCL, but a related prototype
3376 which can hopefully be merged into the main branch of SBCL in the
3377 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3378 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3379 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3380 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3381 dispatch macro character combinations. (thanks to Alexey Dejneka)
3382 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3383 that superficially look like logical namestrings correctly.
3384 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3386 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3387 default supplied-p) for &optional and &key arguments. (thanks to
3390 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3391 * incompatible change: The compiler is now less aggressive about
3392 tail call optimization, doing it only when (> SPACE DEBUG) or
3393 (> SPEED DEBUG). (This is an incompatible change because there are
3394 programs which relied on the old CMU-CL-style behavior to optimize
3395 away their unbounded recursion which will now die of stack overflow.)
3396 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3397 for non-GENCGC systems has been increased to 20M (since that
3398 seems much closer to the likely performance optimum for modern
3399 systems than the old 4M value was)
3400 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3401 and *DEBUG-PRINT-LEVEL*
3402 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3403 of CMU CL's support for SPARC, and various endianness and other
3404 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3405 * new syntactic sugar for the Unix command line: --load foo.bar is now
3406 an alternate notation for --eval '(load "foo.bar")'.
3408 ** The system now detects stack overflow and handles it gracefully,
3409 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3410 optimization settings. (This is a good thing in general, and
3411 its introduction in this version should be particularly timely
3412 for anyone whose code fails because of suppression of tail
3414 ** The system now hunts for the C variable "environ" in a more
3415 devious way, to avoid segfaults when the C library version differs
3416 between compile time and run time. (thanks to Christophe Rhodes)
3417 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3418 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3419 ** The compiler no longer issues bogus style warnings for undefined
3420 classes in the same source file as the DEFCLASSes which defined
3421 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3423 ** fixes in CONDITION class precedence list for undefined function
3424 errors (thanks to Alexei Dejneka)
3425 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3426 correctly. (thanks to Dan Barlow)
3427 ** portability fixes aiming at bootstrapping under CLISP (thanks
3428 to Dave McDonald and Christophe Rhodes)
3429 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3430 ** fixes in type translation and and type inference (thanks to
3432 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3433 ** various fixes in the new ports (thanks to Dan Barlow)
3434 * several changes related to debugging:
3435 ** suppression of tail recursion, as noted above
3436 ** stack overflow detection, as noted above
3437 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3438 is now the default. (For some time encapsulation has been more
3439 reliable than the breakpoint-based :ENCAPSULATE NIL
3440 implementation, at least on X86 systems; and I just noticed that
3441 encapsulation also seems closer to the spirit of the ANSI
3444 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3446 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3447 up properly again. (There was a packaging bug in 0.7.0 which
3448 left their definitions in SB-SYS::LOAD-FOREIGN and
3449 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3450 vital for most things which interface to C-level interfaces,
3451 like extensions working with sockets or databases or
3452 Perl-compatible regexes or whatever, and the need to fix
3453 this bug is the main reason that 0.7.1 was released so
3455 ** DEFGENERIC is now choosier about the methods it redefines, so that
3456 reLOADing a previously-LOADed file containing DEFGENERICs does
3457 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3458 cycle now works as it should. (thanks to Alexey Dejneka)
3459 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3460 fixed by Christophe Rhodes. (He actually submitted this patch
3461 months ago, and I delayed until after 0.7.0.)
3462 ** Bug 111 (internal compiler confusion about runtime checks on
3463 FUNCTION types) was fixed by Alexey Dejneka.
3464 * Some internal cleanups (getting rid of variables which aren't
3465 needed now that the byte interpreter is gone) caused the fasl
3466 file format number to change again.
3468 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3469 * major incompatible change: The default fasl file extension, i.e. the
3470 default extension for files produced by COMPILE-FILE, has changed
3471 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3473 ** There are many changes in the implementation of the compiler.
3474 SBCL is now essentially a compiler-only implementation of ANSI
3475 Common Lisp. EVAL still "interprets" a few special cases, but
3476 almost all the interesting cases are handled by creating
3477 a LAMBDA expression, calling COMPILE on it, then calling
3478 FUNCALL on the result.
3479 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3480 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3481 Since the code is newer, there might still be some new bugs
3482 (though not as many as before Martin Atzmueller's fixes:-). But
3483 the new code is substantially simpler and clearer, and hopefully
3484 any remaining bugs will be simpler, less fundamental, and more
3485 fixable then the bugs in the old code.
3486 ** The revised compiler is still a little unsteady on its feet.
3488 *** The debugging information it produces (particularly the names
3489 of FUNCTION objects) is sometimes much less useful than what
3490 the old compiler produced.
3491 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3492 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3493 within a MACROLET) has been temporarily weakened.
3494 ** There are new compiler optimizations for various functions:
3495 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3496 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3497 *** the math functions TRUNCATE, FLOOR, and CEILING
3498 *** the function-of-all-trades COERCE
3499 Mostly these should be transparent, but there's one
3500 potentially-annoying problem (bug 117): when the compiler
3501 inline-expands a function and does type analysis on the result,
3502 it can create control paths which have type mismatches, and
3503 when it can't prove that those control paths aren't taken,
3504 it will issue WARNINGs about the type mismatches. This is
3505 a particular problem in practice for the new sequence functions.
3506 It's not clear how this should be fixed, and for now, a
3507 workaround is given in the entry for 117 in the BUGS file.
3508 ** (Because of the interaction between the two previous items --
3509 occasional inlining problems and new inline expansions -- some
3510 of the new sequence function optimizations won't really kick in
3511 completely until debugging information, and then inlining, are
3512 straightened out in some future version.)
3513 * minor incompatible changes:
3514 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3515 DIRECTORY no longer implicitly promotes NIL slots of its
3516 pathname argument to :WILD. In particular, when you ask for the
3517 contents of a directory (which you used to be able to do without
3518 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3519 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3520 ** changes in behavior that ANSI explicitly defines to be
3521 implementation dependent:
3522 *** The new compiler-only implementation still conforms with ANSI,
3523 but acts a little different than before. Besides the obvious
3524 changes in performance tradeoffs (that the cost per form passed
3525 to EVAL has gone up, and the cost per form executed by EVAL
3526 has gone down), the behavior of the system changes a little
3527 because there are no longer any interpreted function objects.
3528 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3529 e.g. doing COMPILE on the output of interactive DEFUN is
3531 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3533 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3534 has changed from (:CL) to NIL.
3535 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3536 e.g. #\Newline and #\Tab, don't have names specified in the
3537 ANSI Common Lisp standard, is now based on their ASCII symbolic
3538 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3539 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3540 are no longer used for output.
3541 ** changes in internal implementation constants:
3542 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3543 4 million. (If your application spends a lot of time GCing and
3544 you have a lot of RAM, you might want to experiment with
3545 increasing it even more.)
3546 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3547 However, almost all old code should still continue to work without
3548 immediate update, as SB-C-CALL is now a (deprecated) nickname
3550 ** Old operator names in the style DEF-FOO are now deprecated in
3551 favor of new corresponding names DEFINE-FOO, for consistency with
3552 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3553 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3554 internal symbols, but a few supported extensions like
3555 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3556 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3557 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3558 etc. as you get deeper into recursive calls to the debugger
3559 command loop, instead of the old "5]", "5]]", "5]]]"
3560 sequence. (I was motivated to do this when squabbles between
3561 ILISP and SBCL left me very deeply nested in the debugger. In the
3562 short term, this change will probably provoke more ILISP/SBCL
3563 squabbles, but hopefully it will be an improvement in the long run.)
3564 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3565 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3566 function, since declaiming return types involving aliens is
3567 (1) annoyingly messy to do by hand and (2) vital to efficient
3568 compilation of code which calls such functions.
3569 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3570 longer reexported by the SB-EXT package. They're solely useful
3571 for alien code, so it seems more logical that you should get
3572 them from the SB-ALIEN package, not in SB-EXT.
3573 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3574 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3575 features. Instead, the code that they used to control is always
3576 built into the system.
3577 * many other bug fixes
3578 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3579 advantage of the new EVAL-WHEN stuff and to clean them up in
3580 general, and they are now more ANSI-compliant in a number of
3581 ways. Martin Atzmueller is responsible for a lot of this.
3582 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3584 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3585 *** correct ERROR type for various file operations
3586 *** some fixes for Lisp streams
3587 *** DEFMETHOD syntax checking
3588 *** changing old weird representation of debug information as
3589 strings (which, among their other deficiencies, don't transform
3590 correctly when you rename packages, and don't change their
3591 print representation when you change things like *PACKAGE*
3592 and *PRINT-LENGTH*) to symbols and lists of symbols
3593 He also made several improvements and fixed several bugs in DESCRIBE.
3594 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3596 *** misbehavior of WRITE-STRING/WRITE-LINE
3597 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3598 and several other LOOP problems as well
3599 *** DIRECTORY when similar filenames are present
3600 *** DEFGENERIC with :METHOD options
3601 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3602 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3603 *** argument ordering in FIND with :TEST option
3604 *** mishandled package designator argument in APROPOS-LIST
3605 *** various problems in the backquote readmacro
3606 *** a bug in APROPOS
3607 *** probably some others that I'm not describing very well here,
3608 since the CVS log documents them by reference to sbcl-devel
3609 messages, and the SourceForge archives aren't working well.:-(
3610 ** Dan Barlow improved the Alpha port (and is making progress on the
3611 PPC port, for those of you who think different).
3612 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3613 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3614 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3615 continues to work on the SPARC port (for those of you in a position
3616 to look down upon our little PC-compatible boxes from a great height).
3617 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3618 and uses that copy, rather than the current dynamic value, when
3619 it's trying to decide whether to truncate output. Thus e.g.
3620 (let ((*print-lines* 50))
3621 (pprint-logical-block (stream nil)
3623 (let ((*print-lines* 8))
3624 (print (aref possiblybigthings i) stream)))))
3625 should now truncate the logical block only at 50 lines, instead of
3626 often truncating it at 8 lines, as it did before.
3627 * The doc/cmucl/ directory, containing old CMU CL documentation
3628 from the time of the fork, is no longer part of the base system.
3629 SourceForge has shut down its anonymous FTP service, and with it
3630 my original plan for distributing the old CMU CL documentation
3631 there. For now, if you need these files you can download an old
3632 SBCL source release and extract them from it.
3633 * The fasl file version number changed again, for dozens of reasons,
3634 some of which are apparent above.
3636 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3637 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3638 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3639 patch, so that DISASSEMBLE output is much nicer.
3640 * The code in the SB-PROFILE package now seems reasonably stable.
3641 I still haven't decided what the final interface should look like
3642 (I'd like PROFILE to interact cleanly with TRACE, since both
3643 facilities use function encapsulation) but if you have a need
3644 for profiling now, you can probably use it successfully with
3645 the current CMU-CL-style interface.
3646 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3647 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3648 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3649 link now returns the dangling link itself, and for similar
3650 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3651 link itself. (In these cases the old code signalled an error and
3652 looped endlessly, respectively.) Thus, DIRECTORY now works even
3653 in the presence of dangling and cyclic symbolic links.
3654 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3655 is now a supported extension again, since the consensus on
3656 sbcl-devel was that it can be useful for ordinary development
3657 work, not just for debugging SBCL itself.
3658 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3659 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3660 that currently-defined functions might be redefined later with
3661 different return types.
3662 * Hash tables can be printed readably, as inspired by CMU CL code
3663 of Eric Marsden and SBCL code of Martin Atzmueller.
3664 * better error handling in CLOS method combination, thanks to
3665 Martin Atzmueller porting Pierre Mai's CMU CL patches
3666 * more overflow fixes for >16Mbyte I/O buffers
3667 * A bug in READ has been fixed, so that now a single Ctrl-D
3668 character suffices to cause end-of-file on character streams.
3669 In particular, now you only need one Ctrl-D at the command
3670 line (not two) to exit SBCL.
3671 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3673 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3674 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3675 does the right thing.
3676 * The implementation of some type tests, especially for CONDITION
3677 types, is now tidier and maybe faster, due to CMU CL code
3678 originally by Douglas Crosher, ported by Martin Atzmueller.
3679 * Some math functions have been fixed, and there are new
3680 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3681 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3682 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3683 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3684 likely to be built into sbcl-0.7.0.)
3685 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3686 CL, ported to SBCL by Martin Atzmueller)
3687 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3688 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3689 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3690 * There's a new slam.sh hack to shorten the edit/compile/debug
3691 cycle for low-level changes to SBCL itself, and a new
3692 :SB-AFTER-XC-CORE target feature to control the generation of
3693 the after-xc.core file needed by slam.sh.
3694 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3695 COMPILE-FILE is no longer supported, so that now every function
3696 gets an entry point, so that block compilation looks a little
3697 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3698 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3699 returns the number of bytes consed since the system started,
3700 rather than the number consed since the first time the function
3701 was called. (The new definition parallels ANSI functions like
3702 CL:GET-INTERNAL-RUN-TIME.)
3703 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3704 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3705 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3706 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3707 * Fasl file version numbers are now independent of the target CPU,
3708 since historically most system changes which required version
3709 number changes have affected all CPUs equally. Similarly,
3710 the byte fasl file version is now equal to the ordinary
3713 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3714 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3715 is no longer recognized. I apologize for this, because it was
3716 listed in SB-EXT as a supported extension, but I found that
3717 its existing behavior was poorly specified, as well as incorrectly
3718 specified, and it looked like too much of a mess to straighten it
3719 out. I have enough on my hands trying to get ANSI stuff to work..
3720 * many patches ported from CMU CL by Martin Atzmueller, with
3721 half a dozen bug fixes in pretty-printing and the debugger, and
3722 half a dozen others elsewhere
3723 * fixed bug 13: Floating point infinities are now supported again.
3724 They might still be a little bit flaky, but thanks to bug reports
3725 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3726 as flaky as they were.
3727 * The --noprogrammer command line option is now supported. (Its
3728 behavior is slightly different in detail from what the old man
3729 page claimed it would do, but it's still appropriate under the
3730 same circumstances that the man page talks about.)
3731 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3732 are now supported, and enabled by default. Thus, the compiler can
3733 handle many floating point and complex operations much less
3734 inefficiently. (Thus e.g. you can implement a complex FFT
3736 * The compiler now detects type mismatches between DECLAIM FTYPE
3737 and DEFUN better, and implements CHECK-TYPE more correctly, and
3738 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3739 thanks to patches from Martin Atzmueller.
3740 * various fixes to make the cross-compiler more portable to
3741 ANSI-conforming-but-different cross-compilation hosts (notably
3742 Lispworks for Windows, following bug reports from Arthur Lemmens)
3743 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3744 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3745 fixed thanks to Pierre Mai's CMU CL patches.
3746 * fixes to keep the system from overflowing internal counters when
3747 it tries to use i/o buffers larger than 16M bytes
3748 * fixed bug 45a: Various internal functions required to support
3749 complex special functions have been merged from CMU CL sources.
3750 (When I was first setting up SBCL, I misunderstood a compile-time
3751 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3752 * improved support for type intersection and union, fixing bug 12
3753 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3754 more obscure bugs as well
3755 * some steps toward byte-compiling non-performance-critical
3756 parts of the system, courtesy of patches from Martin Atzmueller
3757 * Christophe Rhodes has made some debian packages of sbcl at
3758 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3759 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3760 stable, but are nonetheless usable. When he's ready, I'd be happy
3761 to add them to the SourceForge "File Releases" section. (And if
3762 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3763 * new fasl file format version number (because of changes in
3764 internal representation of (OR ..) types to accommodate the new
3765 support for (AND ..) types, among other things)
3767 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3768 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3770 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3772 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3773 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3774 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3775 * DESCRIBE now works on structure objects again.
3776 * Most function call argument type mismatches are now handled as
3777 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3778 know whether the function will be redefined before the call is
3779 executed. (The compiler could flag local calls with full WARNINGs,
3780 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3781 it doesn't keep track of enough information to know whether calls
3782 are local in this sense.)
3783 * Compiler output is now more verbose, with messages truncated
3784 later than before. (There should be some supported way for users
3785 to override the default verbosity, but I haven't decided how to
3786 provide it yet, so this behavior is still controlled by the internal
3787 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3788 src/compiler/ir1util.lisp.)
3789 * Fasl file format version numbers have increased again, because
3790 support for the Gray streams extension changes the layout of the
3791 system's STREAM objects.
3792 * The Gray subclassable streams extension now works, thanks to a
3793 patch from Martin Atzmueller.
3794 * The full LOAD-FOREIGN extension (not just the primitive
3795 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3796 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3797 but like most other programs, it defaults to copying the Unix
3798 environment from the original process instead of starting the
3799 new process in an empty environment.
3800 * Extensions which manipulate the Unix environment now support
3801 an :ENVIRONMENT keyword option which doesn't smash case or
3802 do other bad things. The CMU-CL-style :ENV option is retained
3803 for porting convenience.
3804 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3805 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3807 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3809 * A patch from Martin Atzmueller seems to have solved the SIGINT
3810 problem, and as far as we know, signal-handling now works cleanly.
3811 (If you find any new bugs, please report them!)
3812 * The system no longer defaults Lisp source file names to types
3813 ".l", ".cl", or ".lsp", but only to ".lisp".
3814 * The compiler no longer uses special default file extensions for
3815 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3816 seems to expect a single default extension for all compiled code,
3817 and there's no compelling reason to try to stretch the standard
3818 to allow two different extensions.) Instead, byte-compiled files
3819 default to the same extension as native-compiled files.
3820 * Fasl file format version numbers have increased again, because
3821 a rearrangement of internal implementation packages made some
3822 dumped symbols in old fasl files unreadable in new cores.
3823 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3824 many fewer weird special cases.
3825 * Bug #17 (differing COMPILE-FILE behavior between logical and
3826 physical pathnames) has been fixed, and some related misbehavior too,
3827 thanks to a patch from Martin Atzmueller.
3828 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3829 by Tim Moore, ported to SBCL by Martin Atzmueller.
3830 * Martin Atzmueller fixed several filesystem-related problems,
3831 including bug #36, in part by porting CMU CL patches, which were
3832 written in part by Paul Werkowski.
3833 * More compiler warnings in src/runtime/ are gone, thanks to
3834 more patches from Martin Atzmueller.
3835 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3838 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3840 * DESCRIBE now works on CONDITION objects.
3841 * The debugger now handles errors which arise when trying to print
3842 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3844 * The build system now uses an additional file, customize-target-features.lisp,
3845 to allow local modifications to the target *FEATURES* list. (The point of
3846 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3847 debugging features enabled, without having to worry about propagating it
3848 into everyone's system when I do a "cvs update".) When no
3849 customize-target-features.lisp file exists, the target *FEATURES* list
3850 should be constructed the same way as before.
3851 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3852 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3853 warn about behavior which is undefined under the ANSI spec. Note: This
3854 is specified by ANSI, but it's not very popular with programmers.
3855 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3856 macro in the SBCL sources for an example of a workaround which you
3857 might use to make portable ANSI-standard code which does what you want.
3858 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3859 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3860 when it's used as a non-toplevel form. (This is required in order
3861 to implement the DEFCONSTANT-EQX macro.)
3862 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3863 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3864 funny things, due to bugs in the implementation of EVAL-WHEN
3865 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3866 non-toplevel DEFCONSTANTs are uncommon.)
3867 * The core file version number and fasl file version number have been
3868 incremented, because the old noncompliant DEFCONSTANT behavior involved
3869 calling functions which no longer exist, and because I also took the
3870 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3871 * fixed bug 1 (error handling before read-eval-print loop starts), and
3872 redid debugger restarts and related debugger commands somewhat while
3874 ** The QUIT debugger command is gone, since it did something
3875 rather different than the SB-EXT:QUIT command, and since it never
3876 worked properly outside the main toplevel read/eval/print loop.
3877 Invoking the new TOPLEVEL restart provides the same functionality.
3878 ** The GO debugger command is also gone, since you can just invoke
3879 the CONTINUE restart directly instead.
3880 ** The TOP debugger command is also gone, since it's redundant with the
3881 FRAME 0 command, and since it interfered with abbreviations for the
3883 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3885 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3886 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3887 some porting work by Martin Atzmueller)
3888 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3889 with a boatload of patches which he ported to SBCL. Now that those
3891 ** The system tries to make sure that its low-priority messages
3892 are prefixed by semicolons, to help people who like to use
3893 syntax highlighting in their ILISP buffer. (This patch
3894 was originally due to Raymond Toy.)
3895 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3896 patches originally written by Raymond Toy.
3897 ** The compiler understands coercion between single-value and
3898 multiple-VALUES type expressions better, getting rid of some very
3899 weird behavior, thanks to patches originally by Robert MacLachlan
3900 and Douglas Crosher.
3901 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3902 lambda lists, thanks to a patch originally by Pierre Mai.
3903 ** The system no longer bogusly warns about "abbreviated type
3905 ** The compiler gets less confused by inlining and RETURN-FROM,
3906 thanks to some patches originally by Tim Moore.
3907 ** The system no longer hangs when dumping circular lists to fasl
3908 files, thanks to a patch originally from Douglas Crosher.
3909 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3910 undefined function error.
3911 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3912 in structure slot initforms) for now, documented workaround instead:-|
3913 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3914 * fixed bug 5: added stubs for various Gray stream functions called
3915 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3916 installed, at least appropriate type errors are generated
3917 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3918 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3919 consistently in DEFMETHOD forms.
3920 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3921 it doesn't seem to affect SBCL after all
3922 * The C runtime system now builds with better optimization and many
3923 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3925 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3927 * The system is now under CVS at SourceForge (instead of the
3928 CVS repository on my home machine).
3929 * The new signal handling code has been tweaked to treat register
3930 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3931 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3932 downstream, e.g. in debug-int.lisp, has implicit dependencies
3933 on the unsignedness of integer representation of machine words,
3934 and that caused the system to bomb out with infinite regress
3935 when trying to recover from type errors involving signed values,
3936 e.g. (BUTLAST '(1 2 3) -1).)
3937 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3938 (This was one of the bugs Peter Van Eynde reported back in July.)
3939 * The system now uses code inspired by Colin Walters' O(N)
3940 implementation of MAP (from the cmucl-imp@cons.org mailing
3941 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3942 inline the MAP operation, and there is more than one
3943 sequence argument to the MAP call (so that it can't just
3944 do ETYPECASE once and for all based on the type of the
3945 single sequence argument). (The old non-inline implementation
3946 of the general M-argument sequence-of-length-N case required
3947 O(M*N*N) time when any of the sequence arguments were LISTs.)
3948 * The QUIT :UNIX-CODE keyword argument has been renamed to
3949 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3950 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3952 * Raymond Wiker's patches to port dynamic loading from Linux to
3953 FreeBSD have been added.
3954 * The BUGS file is now more nearly up to date, thanks in large part
3955 to Martin Atzmueller's review of it.
3956 * The debugger now flushes standard output streams before it begins
3957 its output ("debugger invoked" and so forth).
3958 * The core version number and fasl file version number have both
3959 been incremented, because of incompatible changes in the layout
3961 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3962 used to not be called for a saved Lisp image.)
3963 * Martin Atzmueller's version of a patch to fix a compiler crash,
3964 as posted on sbcl-devel 13 September 2000, has been installed.
3965 * Instead of installing Martin Atzmueller's patch for the
3966 compiler transform for SUBSEQ, I deleted the compiler transform,
3967 and transforms for some similar consing operations.
3968 * A bug in signal handling which kept TRACE from working on OpenBSD
3970 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3971 away by constant folding
3972 * The system now defines its address space constants in one place
3973 (in the Lisp sources), and propagates them automatically elsewhere
3974 (through GENESIS and the sbcl.h file). Therefore, patching the
3975 address map is less unnecessarily tedious and error-prone. The
3976 Lisp names of address space constants have also been systematized.
3977 * CVS tags like dollar-Header-dollar have been removed from
3978 the sources, because they have never saved me trouble and
3979 they've been source of trouble working with patches and other
3980 diff-related operations.
3981 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3982 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3984 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3986 * The system has been ported to OpenBSD.
3987 * The system now compiles with a simple "sh make.sh" on the systems
3988 that it's supported on. I.e., now you no longer need to tweak
3989 text in the target-features.lisp-expr and symlinks in src/runtime/
3990 by hand, the make.sh takes care of it for you.
3991 * The system is no longer so grossly inefficient when compiling code
3992 involving vectors implemented as general (not simple) vectors (VECTOR T),
3993 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3994 which dares to use the various sequence functions on non-simple
3995 vectors, takes less of a performance hit.
3996 * There is now a primitive type predicate VECTOR-T-P
3997 to test for the (VECTOR T) type, so that e.g.
3998 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3999 can now be compiled with some semblance of efficiency. (The old code
4000 turned the type declaration into a full call to %TYPEP at runtime!)
4001 * AREF on (VECTOR T) is still not fast, since it's still compiled
4002 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4003 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4004 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4005 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4006 without making full calls to SUBTYPEP at runtime.
4007 (Some analogous efficiency issues for non-simple vectors specialized to
4008 element types other than T, or for non-simple multidimensional arrays,
4009 have not been addressed. They could almost certainly be handled the
4010 same way if anyone is motivated to do so.)
4011 * The changes in array handling break binary compatibility, so
4012 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4013 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4014 instead of (VALUES T T).
4015 * By following the instructions that Dan Barlow posted to sbcl-devel
4016 on 2 July 2000, I was able to enable primitive dynamic object
4017 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4018 functionality is not implemented (since it calls ld to resolve
4019 library references automatically, requiring RUN-PROGRAM for its
4020 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4021 try to resolve library references) is now supported.
4022 * The system now flushes the standard output streams when it terminates,
4023 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4024 them at several other probably-convenient times, e.g. in each pass of
4025 the toplevel read-eval-print loop, and after evaluating a form given
4026 as an "--eval" command-line option. (These changes were motivated by a
4027 discussion of stream flushing issues on cmucl-imp in August 2000.)
4028 * The source transform for TYPEP of array types no longer assumes
4029 that an array whose element type is a not-yet-defined type
4030 is implemented as an array of T, but instead punts, so that the
4031 type will be interpreted at runtime.
4032 * There is now some support for cross-compiling in make.sh: each of
4033 the phases of make.sh has its own script. (This should be transparent
4034 to people doing ordinary, non-cross-compile builds.)
4035 * Since my laptop doesn't have hundreds of megabytes of memory like
4036 my desktop machine, I became more motivated to do some items on
4037 my to-do list in order to reduce the size of the system a little:
4038 ** Arrange for various needed-only-at-cold-init things to be
4039 uninterned after cold init. To support this, those things have
4040 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4041 symbols with such names are now uninterned after cold init).
4042 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4043 fasl files for cold load.
4044 ** Remove the old compiler structure pooling code (which used to
4045 be conditional on the target feature :SB-ALLOC) completely.
4046 ** Redo the representation of some data in cold init to be more compact.
4047 (I also looked into supporting byte compiled code at bootstrap time,
4048 which would probably reduce the size of the system a lot, but that
4049 looked too complicated, so I punted for now.)
4050 * The maximum signal nesting depth in the src/runtime/ support code has
4051 been reduced from 4096 to 256. (I don't know any reason for the very
4052 large old value. If the new smaller value turns out to break something,
4053 I'll probably just bump it back up.)
4054 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4056 * Many, many bugs reported by Peter Van Eynde have been added to
4057 the BUGS list; some have even been fixed.
4058 * While enabling dynamic object file loading, I tried to make the
4059 code easier to understand, renaming various functions and variables
4060 with less ambiguous names, and changing some function calling
4061 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4062 * While trying to figure out how to do the OpenBSD port, I tried to
4063 clean up some of the code in src/runtime/. In particular, I dropped
4064 support for non-POSIX signal handling, added various comments,
4065 tweaked the code to reduce the number of compilation warnings, and
4066 renamed some files to increase consistency.
4067 * To support the new automatic configuration functionality in make.sh,
4068 the source file target-features.lisp-expr has been replaced with the
4069 source file base-target-features.lisp-expr and the machine-generated
4070 file local-target-features.lisp-expr.
4071 * fixed a stupid quoting error in make.sh so that using CMU CL
4072 "lisp -batch" as cross-compilation host works again
4074 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4076 * DESCRIBE no longer tries to call itself recursively to describe
4077 bound/fbound values, so that it no longer fails on symbols which are
4078 bound to themselves (like keywords, T, and NIL).
4079 * DESCRIBE now works on generic functions.
4080 * The printer now prints less-screwed-up representations of closures
4081 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4082 * A private symbol is used instead of the :EMPTY keyword previously
4083 used to mark empty slots in hash tables. Thus
4084 (DEFVAR *HT* (MAKE-HASH-TABLE))
4085 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4086 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4087 now does what ANSI says that it should. (You can still get
4088 similar noncompliant behavior if bang on the hash table
4089 implementation with all the symbols you get back from
4090 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4091 This breaks binary compatibility, since tests for equality to
4092 :EMPTY are wired into things like the macroexpansion of
4093 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4095 * There's now a minimal placeholder implementation for CL:STEP,
4096 as required by ANSI.
4097 * An obscure bug in the interaction of the normal compiler, the byte
4098 compiler, inlining, and structure predicates has been patched
4099 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4100 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4102 * Missing ordinary arguments in a macro call are now detected even
4103 when the macro lambda list contains &KEY or &REST.
4104 * The debugger no longer complains about encountering the top of the
4105 stack when you type "FRAME 0" to explicitly instruct it to go to
4106 the top of the stack. And it now prints the frame you request even
4107 if it's the current frame (instead of saying "You are here.").
4108 * As specified by ANSI, the system now always prints keywords
4109 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4111 * The default initial SIZE of HASH-TABLEs is now smaller.
4112 * Type information from CLOS class dispatch is now propagated
4113 into DEFMETHOD bodies, so that e.g.
4114 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4116 is now basically equivalent to
4117 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4118 (DECLARE (TYPE SINGLE-FLOAT X))
4120 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4121 operation, without having to do run-time type dispatch.
4122 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4123 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4124 * Since I don't seem to be making big file reorganizations very often
4125 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4126 is overflowing my ability to conveniently back them up), I've finally
4127 checked the system into CVS. (The CVS repository is on my home system,
4128 not at SourceForge -- putting it on SourceForge might come later.)
4129 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4130 high-level GC-NOTIFY-FOO functions send their output. (There's
4131 still very little control of where low-level verbose GC functions
4132 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4133 less than it used to -- the GC-NOTIFY-FOO functions are now under
4134 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4135 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4136 in only one place in the source code, and propagates it automatically
4137 everywhere that it's needed. Thus e.g. when I bump the version from
4138 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4139 * The C source files now include boilerplate legalese and documentation
4140 at the head of each file (just as the Lisp source files already did).
4141 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4142 to his page will be replaced with a link to his new CLiki service.
4144 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4146 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4147 * The build process now looks for GNU make under the default name "gmake",
4148 instead of "make" as it used to. If GNU make is not available as "gmake"
4149 on your system, you can change this default behavior by setting the
4150 GNUMAKE environment variable.
4151 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4152 can build without error under CMU CL.
4154 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4156 * There is now a partial SBCL user manual (with some new text and some
4157 text cribbed from the CMU CL manual).
4158 * The beginnings of a profiler have been added (starting with the
4159 CMU CL profiler and simplifying and cleaning up). Eventually the
4160 main interface should be through the TRACE macro, but for now,
4161 it's still accessed through vaguely CMU-CL-style functions and macros
4162 exported from the package SB-PROFILE.
4163 * Some problems left over from porting CMU CL to the new
4164 cross-compilation bootstrap process have been cleaned up:
4165 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4166 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4167 part when getting rid of the compiler *BACKEND* stuff.)
4168 ** The value of *NULL-TYPE* was screwed up, because it was
4169 being initialized before the type system knew the final
4170 definition of the 'NULL type. This screwed up several key
4171 optimizations in the compiler, causing inefficiency in all sorts
4172 of places. (I found it because I wanted to understand why
4173 GET-INTERNAL-RUN-TIME was consing.)
4174 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4175 PROCLAIM FTYPE information. Unfortunately this broke binary
4176 compatibility again, since now the forms output by DEFGENERIC
4177 to refer to functions which didn't exist in 0.6.3.
4178 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4179 can use the new (as of 0.6.3) transform for SOME into MAP into
4181 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4182 values to (INTEGER 0 1000000), so that the time code will no longer
4183 occasionally get blown up by Linux returning 1000000 microseconds
4184 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4185 its output conform to the ANSI spec. (Alas, this makes its output
4186 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4187 * A full call to MAP NIL with a single sequence argument no longer conses.
4188 * fixes to problems pointed out by Martin Atzmueller:
4189 * The manual page no longer talks about multiprocessing as though
4190 it were currently supported.
4191 * The ILISP support patches have been removed from the distribution,
4192 because as of version 5.10.1, ILISP now supports SBCL without us
4193 having to maintain patches.
4194 * added a modified version of Raymond Toy's recent CMU CL patch for
4195 EQUALP comparison of HASH-TABLE
4197 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4199 * The system still can't cross-compile itself with
4200 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4201 entails), but at least it can compile more of itself that way
4202 than it used to be able to, and various buglets which were uncovered
4203 by trying to cross-compile itself that way have now been fixed.
4204 * This release breaks binary compatibility again. This time
4205 at least I've incremented the FASL file format version to 2, so that the
4206 problem can be detected reliably instead of just causing weird errors.
4207 * various new style warnings:
4208 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4209 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4210 ** using the lexical binding of a variable named in the *FOO* style
4211 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4212 as specified by ANSI.
4213 * *RANDOM-STATE* is no longer automatically initialized from
4214 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4215 default behavior of the system is to repeat its behavior every time
4216 it's run. If you'd like to change this behavior, you can always
4217 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4218 old convention there was no comparably easy way to get the system to
4219 repeat its behavior every time it was run.
4220 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4221 FTYPE declarations has been removed, in favor of their ANSI
4222 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4223 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4224 the types of their sequence arguments can be determined at compile time.
4225 This is done through a new open code expansion for MAP which eliminates
4226 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4227 argument types can be determined at compile time.
4228 * The optimizer now transforms COERCE into an identity operation when it
4229 can prove that the coerced object is already of the correct type. (This
4230 can be a win for machine generated code, including the output of other
4231 optimization transforms, such as the MAP transform above.)
4232 * Credit information has been moved from source file headers into CREDITS.
4233 * Source file headers have been made more standard.
4234 * The CASE macro now compiles without complaining even when it has
4237 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4239 * (Note that the way that the PCL macroexpansions were rewritten
4240 to accommodate the change in DEFGENERIC below breaks binary
4241 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4242 not run under sbcl-0.6.2. Once we get out of alpha releases,
4243 i.e. hit release 1.0.0, we'll probably try to maintain binary
4244 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4245 and sbcl-1.4.4. Until then, however, it might be fairly common
4246 for maintenance releases to break binary compatibility.)
4247 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4249 * The reporting of unhandled signals has been changed to print some
4250 explanatory text as well as the report form. (Previously only
4251 the report form was printed.)
4252 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4253 it defines, so that the compiler no longer issues undefined function
4254 warnings for compiled-but-not-yet-loaded generic functions.
4255 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4256 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4257 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4258 section of the ANSI spec are supported.
4259 * The "" nickname for the "KEYWORD" package has been removed.
4260 The reader still handles symbol tokens which begin with a package marker
4261 as keywords, but it doesn't expose its mechanism for doing so in the
4262 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4263 * The system now issues STYLE-WARNINGs for contradictory TYPE
4264 proclamations. (Warnings for contradictory FTYPE proclamations would
4265 be nice too, but those can't be done usefully unless the type system
4266 is made smarter about FUNCTION types.)
4267 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4268 systematized, so that "*target-*.lisp is supposed to exist only on the
4269 target and imply that there's a related file which exists on the
4270 host, and *host-*.lisp is supposed to exist only on the host and imply
4271 that there's a related file which exists on the target. This involves a
4272 lot of renaming. Hopefully the acute confusion caused by the renaming
4273 will be justified by the reduction in chronic confusion..
4274 ** runtime-type.lisp -> early-target-type.lisp
4275 ** target-type.lisp -> late-target-type.lisp
4276 ** early-host-format.lisp -> early-format.lisp
4277 ** late-host-format.lisp -> late-format.lisp
4278 ** host-error.lisp -> misc-error.lisp
4279 ** early-error.lisp -> early-target-error.lisp
4280 ** late-error.lisp -> late-target-error.lisp
4281 ** host-defboot.lisp -> early-defboot.lisp
4282 ** code/misc.lisp -> code/target-misc.lisp
4283 ** code/host-misc.lisp -> code/misc.lisp
4284 ** code/numbers.lisp -> code/target-numbers.lisp
4285 ** code/early-numbers.lisp -> numbers.lisp
4286 ** early-host-type.lisp -> early-type.lisp
4287 ** late-host-type.lisp -> late-type.lisp
4288 ** host-typep.lisp -> typep.lisp
4289 ** load.lisp -> target-load.lisp
4290 ** host-load.lisp -> load.lisp
4291 ** host-disassem.lisp -> disassem.lisp
4292 ** host-insts.lisp -> insts.lisp
4293 ** byte-comp.lisp -> target-byte-comp.lisp
4294 ** host-byte-comp.lisp -> byte-comp.lisp
4295 ** host-signal.lisp -> signal.lisp
4296 ** host-defstruct.lisp -> defstruct.lisp
4297 ** late-target-type.lisp -> deftypes-for-target.lisp
4298 Furthermore, several other previously target-only files foo.lisp (e.g.
4299 hash-table.lisp and random.lisp) have been split into a target-and-host
4300 foo.lisp file and a target-only target-foo.lisp file, with their key type
4301 definitions in the target-and-host part, so that the cross-compiler will
4302 know more about target types.
4303 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4304 gone away. In their place are various *BACKEND-FOO* variables
4305 corresponding to the slots of the old structure.
4306 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4307 into the target SBCL has been fixed.
4308 * The chill.lisp system for loading cold code into a running SBCL
4310 * Support for the CMU CL "scavenger hook" extension has been removed.
4311 (It was undocumented and unused in the CMU CL sources that SBCL was
4312 derived from, and stale in sbcl-0.6.1.)
4313 * Various errors in the cross-compiler type system were detected
4314 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4315 (enabling various consistency checks). Many of them were fixed,
4316 but some hard problems remain, so the compiler is back to
4317 running without *TYPE-SYSTEM-INITIALIZED* for now.
4318 * As part of the cross-compiler type system cleanup, I implemented
4319 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4320 * I have started adding UNCROSS calls throughout the type system
4321 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4322 on cross-compiler input files will be able to go away, and various
4324 * CONSTANTP now returns true for quoted forms (as explicitly required
4327 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4329 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4330 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4331 (MAKE-LIST -1). In the longer term, it ought to become true
4332 that declarations are assertions even at SAFETY 1. For now, it's not
4333 quite true even at SAFETY 3, but it's at least more nearly true..
4334 (Note that this change seems to increases the size of the system by
4335 O(5%) and to decrease the speed of the compiler by 20% or more.)
4336 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4337 for the problem of printing dozens of lines of distracting information
4338 about low-level system machinery as part of the top stack frame
4339 on entry to the debugger when an undefined function was called.
4340 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4341 is not reset to COMMON-LISP-USER.
4342 * Compilation of stuff related to dyncount.lisp has been made conditional
4343 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4344 smaller. The various dyncount-related symbols have been moved into
4345 a new "SB-DYNCOUNT" package.
4346 * tty-inspect.lisp has been renamed to inspect.lisp.
4347 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4348 feature has gone away. (When we eventually port to other flavors of
4349 libc and/or Unix, we'll try to make the differences between flavors
4350 invisible at the user level.)
4351 * Various other *FEATURES* tags, and/or their associated conditionals,
4352 have been removed if obsolescent, or given better documentation, or
4353 sometimes given more-mnemonic names.
4355 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4357 * tidied up "make.sh" script
4358 * tidied up system directory structure
4359 * better "clean.sh" behavior
4360 * added doc/FOR-CMUCL-DEVELOPERS
4361 * many many small tweaks to output format, e.g. removing possibly-confusing
4362 trailing #\. character in DESCRIBE-INSTANCE
4363 * (EQUALP #\A 'A) no longer signals an error.
4364 * new hashing code, including EQUALP hashing
4365 * tidied up Lisp initialization and toplevel
4366 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4367 * command line argument processing
4368 * added POSIX-GETENV function to deal with Unix-ish environment variables
4369 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4370 terminating SBCL on EOF
4371 * non-verbose GC by default
4372 * There is no more "sbcl" shell script; the sbcl file is now the C
4373 runtime executable (just like CMU CL).
4374 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4376 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4377 symbol and package information as Lisp native symbol and package objects
4378 instead of strings naming symbols and strings naming packages. This way,
4379 whenever packages are renamed (as in warm init), debug information is
4380 transformed along with everything else.
4381 * tweaked the optimization policy declarations which control the building
4382 of SBCL itself. Now, among other things, the system no longer saves
4383 source location debugging information. (This helps two problems at once
4384 by reducing SBCL size and by keeping SBCL from trying to look for its
4385 sources -- which may not exist -- when reporting errors.)
4386 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4387 debugging and testing purposes
4388 * cleaned up printing, making the printer call PRINT-OBJECT for
4389 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4390 methods, giving nearly-ANSI behavior
4391 * converted almost all special variables to use *FOO* naming convention
4392 * deleted PARSE-TIME functionality, since it can be done portably
4393 * moved some files out of cold init into warm init
4394 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4396 * regularized formatting of source files
4397 * added an install.sh script
4398 * fixed ridiculous memory usage of cross-compiler by making
4399 compiler/alloc.lisp not try to do pooling unless it can hook
4400 itself into the GC of the cross-compilation host. Now the system
4401 builds nicely on my old laptop.
4402 * added :SB-ALLOC in target-features.lisp-expr
4403 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4404 was not implemented)
4405 * re-did condition handling and note reporting in the compiler. Notes
4406 are no longer handled by signalling conditions. Style warnings
4407 and warnings are handled more correctly and reported in such a way
4408 that it's easy to find one or the other in your output (so that you
4409 can e.g. figure out which of many problems caused COMPILE-FILE to
4411 * changed the severity of several compiler warnings from full WARNING
4412 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4413 compiler note reporting so that it doesn't use the condition system
4414 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4415 COMPILE-FILE command)
4416 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4417 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4418 no longer supported, since their implementation was deeply intertwingled
4419 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4420 * removed bogus "support" for compiler macros named (SETF FOO), and
4421 removed the compiler macro for SETF INFO (but only after making a fool
4422 of myself on the cmucl-imp mailing list by posting a bogus patch for
4423 DEFINE-COMPILER-MACRO..)
4424 * Compiled files containing forms which have side effects on the Lisp
4425 reader (such as DEFPACKAGE forms) are now handled more correctly.
4426 (Compiler queuing of top level lambdas has been suppressed by setting
4427 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4428 * deleted various currently-unused source files, e.g. gengc.lisp. They
4429 may be added back at some point e.g. when porting to other architectures,
4430 but until they are it's distracting to distribute them and to try to
4432 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4433 there were so many of them they're just distractions, and UNCROSS is
4434 known to be able to handle the current sources
4435 * moved PROFILE functionality into TRACE, so that it will be clear
4436 how the wrapping and unwrapping of functions when you profile them
4437 interacts with the wrapping and unwrapping of functions when you
4438 trace them. (Actually, the functionality isn't there yet, but at least
4439 the interface specification is there. Hopefully, the functionality will
4440 arrive with some future maintenance release.)
4441 * removed host-oops.lisp
4442 * changed signature of QUIT function to allow UNIX-CODE argument
4443 * fixed READ-SEQUENCE bug
4444 * tweaked verbose GC output so that it looks more like the progress
4445 output that ANSI specifies for functions like LOAD
4446 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4447 * added <http://sbcl.sourceforge.com> to the banner information printed by