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 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) are now >20% faster
8 for variable slot names, when the class of the instance is
9 an instance of STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS, and not
10 any of their subclasses.
11 * optimization: member type construction is now O(N) instead
13 * optimization: UNION and NUNION are now O(N+M) for large
14 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
17 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
18 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
19 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
20 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
22 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
23 and generic function now print the object identity for anonymous
24 instances. (thanks to Attila Lendvai)
25 * enhancement: as an extension to MOP, SBCL now supports SETF of
26 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
27 (thanks to Attila Lendvai)
28 * enhancement: sb-cover has an alternate annotation mode which puts
29 the form annotations at the car of the form, instead of annotating
30 it completely. The benefit of this mode is that it shows better
31 which forms were instrumented by the compiler.
32 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
33 by printer control variables. (reported by Dan Corkill)
34 * bug fix: system leaked memory when delayed output was performed by
35 the OS in smaller chunks then expected. (thanks to David Smith)
36 * bug fix: system leaked memory when file streams were not closed
38 * bug fix: large objects written to slow streams that were modified
39 after the write could end up with the modified state written to
40 the underlying file descriptor.
41 * bug fix: multiple threads operating in parallel on the same stream
42 could cause buffer-overflows.
43 * bug fix: source location information is stored correctly
44 (broken since 1.0.6). This bug would generally show up as the
45 Slime debugger higlighting the wrong form when the sldb-show-source
47 * bug fix: Branch forms are again annotated as branches in the sb-cover
49 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
50 on x86-64. (reported by Gregory Vanuxem)
51 * bug fix: EQUALP could return wrong results for structures with raw
52 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
53 word). (reported by Vjacheslav Fyodorov)
54 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
57 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
58 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
59 atomic compare-and-swap operations on threaded platforms.
60 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
61 allows assining a global minimum value to optimization qualities
62 (overriding proclamations and declarations).
63 * enhancement: closed over variables can be stack-allocated on x86
65 * performance bug fix: GETHASH and (SETF GETHASH) are once again
67 * optimization: slot definition lookup is now O(1). This speeds up
68 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
69 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
70 * optimization: ASSOC and MEMBER can now be open-coded for all
71 combinations of keyword arguments when second argument is constant
72 and SPEED >= SPACE. In other cases a specialized version is
74 * bug fix: using obsoleted structure instances with TYPEP and
75 generic functions now signals a sensible error.
76 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
77 (reported by Kristoffer Kvello)
78 * bug fix: backtrace construction is now more careful when making
79 lisp-objects from pointers on the stack, to avoid creating bogus
80 objects that can be seen by the GC.
81 * bug fix: defaulting of values in contexts expecting more than 7
82 variables now works on x86-64. (reported by Christopher Laux)
83 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
85 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
86 as the property-list of a symbol.
87 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
88 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
89 situations requested, are once again file-compileable. (reported
92 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
93 * MOP improvement: support for user-defined subclasses of
94 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
95 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
96 the expansion of DEFMETHOD, is responsible for generating a form
97 which creates a list of specializers when evaluated. Additional
98 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
99 debugging and introspective support.
100 * minor incompatible change: the (unsupported) spinlock interface
101 has changed: free spinlock now has the value NIL, and a held spinlock
102 has the owning thread as its value.
103 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
104 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
106 * enhancement: name of a socket-stream is now "a socket" instead of
108 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
109 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
110 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
111 for generic functions. (Thanks to Tobias C. Rittweiler)
112 * optimization: bignum printing speed has been improved by 20-40%
113 (depending on the bignum size.)
114 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
116 * bug fix: the cache used by the CLOS to store precomputed effective
117 methods, slot offsets, and constant return values is now thread and
119 * bug fix: generic function dispatch function updating is now thread
120 and interrupt safe (in the sense that the known issues have been
122 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
123 * bug fix: interning EQL-specializers is now thread and interrupt safe.
124 * bug fix: asdf systems with dependencies to the SB-POSIX or
125 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
126 * bug fix: interrupt safety of applicable method computation has been
129 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
130 * new contrib: sb-cover, an experimental code coverage tool, is included
132 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
133 significantly faster.
134 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
135 produce more efficient code on x86-64 if the compiler can determine
136 that (+ INDEX <constant>) does not require a bounds check and FOO
137 has an element type at least 8 bits wide.
138 * enhancement: a new, experimental synchronous timeout facility is
139 provided. Refer to SB-SYS:WITH-DEADLINE for details.
140 * enhancement: when a symbol name conflict error arises, the
141 conflicting symbols are always printed with a package prefix.
142 (thanks to Kevin Reid)
143 * enhancement: stepping is now once again supported on the SPARC and
144 MIPS platforms. (It is also now more likely to work on CheneyGC
146 * enhancement: sb-sprof can now also track and report accurate call
148 * bug fixes: the treatment of non-standard subclasses of
149 SB-MOP:SPECIALIZER is more correct.
150 * incompatible change: PURIFY no longer copies the data from the
151 dynamic space into the static and read-only spaces on platforms
152 that use the generational garbage collector
153 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
155 * bug fix: GC race condition occasionally resulting in crashes with
156 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
158 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
160 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
161 a STYLE-WARNING to be signalled (regression from 1.0.4.)
162 * bug fix: an asynchronous interrupt could previously leave the
163 system running with GC inhibited.
164 * bug fix: a DECLARE form evaluated at top-level now causes an error
165 rather than silently (or verbosely) returning NIL.
166 * bug fix: trying to dissassemble functions compiled at high DEBUG could
167 result in a error being signalled due to source form lookup errors.
168 (reported by Peter Graves)
170 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
171 * incompatible change: removed writer methods for host-ent-name,
172 host-ent-addresses -- changing the values did not update the DNS
174 * minor incompatible change: changed experimental JOIN-THREAD interface
175 * documentation: the manual now lists reader and writer methods
176 in class slot documentation sections. (thanks to Richard M Kreuter)
177 * documentation: unwinding from asyncronous events has been
178 documented as unsafe.
179 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
180 in multithreaded application code.
181 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
182 platforms. (thanks to James Anderson for the optimization hint)
183 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
185 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
186 variants no longer cons.
187 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
188 their NOT- variants no longer cons.
189 * optimization: EQUAL hash tables no longer use SXHASH for objects
190 of all data types, but instead use an EQL hash for types for which
191 EQUAL is the same as EQL.
192 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
193 are significantly faster.
194 * optimization: new STRING-OUTPUT-STREAM implementation is much
195 faster for large outputs and conses 30% less on average.
196 * enhancement: XREF information is now collected for references made
197 to global variables using SYMBOL-VALUE and a constant argument.
198 * enhancement: SIGINT now causes a specific condition
199 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
200 * bug fix: FILE-POSITION used to signal an error in some cases where
201 ANSI requires it to return NIL.
202 * bug fix: ADJUST-ARRAY is now interrupt-safe.
203 * bug fix: adding and removing fd-handlers is now interrupt-safe.
204 * bug fix: inlined calls to C now ensure 16byte stack alignment on
206 * bug fix: bad type declaration in the CLOS implementation has
207 been fixed. (reported by James Anderson)
208 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
209 (thanks to Lutz Euler)
210 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
211 required by the CLHS. (reported by Samium Gromoff)
212 * bug fix: dead unbound variable references now signal an error.
213 (reported by Marco Monteiro)
214 * bug fix: / with an unused value was being deleted in safe code.
215 (thanks to Marco Monteiro and Kevin Reid)
216 * bug fix: number of characters that can be written onto a single
217 line in a file is unlimited.
218 * bug fix: some GC deadlocks caused by asynchronous interrupts have
219 been fixed by inhibiting interrupts for when GC is disbled.
220 * bug fix: some interrupt safety issues with GETHASH, (SETF
221 GETHASH), CLRHASH and REMHASH have been fixed.
222 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
223 specifier no longer causes infinite recursion.
224 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
225 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
226 * bug fix: an &environment argument with the correct variable information
227 is passed to macros that are expanded during byte compilation.
228 (reported by Samium Gromoff)
229 * bug fix: a logic error was causing the hash function for bignums to
230 have excessive amounts of collisions. (reported by Faré Rideau)
231 * bug fix: modifying the contents of an array could change the return
232 value of SXHASH on that array, which is only allowed for strings
233 and bit vectors. (bug introduced in 0.9.16)
234 * improvement: the x86-64/darwin port now passes all tests (except
235 for the debugger tests) but should still be considered
236 experimental until this is fixed.
237 * improvement: a style-warning is signaled for CASE (etc) clauses with
238 duplicate keys. (thanks to Kevin Reid)
239 * improvement: macos/x86 and macos/x86-64 now use mach exception
240 handlers for dealing with illegal instructions (for trapping and
241 error handling) and memory protection violations (for GC).
243 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
244 * new platform: experimental support for x86-64/darwin (MacOS).
245 * incompatible change: the thread-safe (on most platforms) getaddrinfo
246 and getnameinfo sockets functions are used instead of gethostbyaddr
247 and gethostbyname, on platforms where the newer functions are available.
248 As a result, the ALIASES field of HOST-ENT will always be NIL on these
250 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
251 don't print the startup banner, but behave as if --noinform was passed
252 as a command line argument. (thanks to Kevin Reid)
253 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
254 * optimization: code using alien values with undeclared types is much faster.
255 * optimization: the compiler is now able to open code SEARCH in more cases.
256 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
257 * bug fix: using standardized COMMON-LISP special variables as loop
258 variables no longer signals bogus package lock violations. (reported
260 * bug fix: declaring local loop variables to be of a range-limited type
261 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
262 (reported by Andras Simon)
263 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
264 bugs remain on x86-64.)
265 * bug fix: the #= and ## reader macros now interact reasonably with
266 funcallable instances.
267 * bug fix: type-checks for function arguments were compiled using the
268 compiler policy settings of the wrong lexical environment (in 1.0.2
270 * bug fix: SHADOW accepts characters as string designators, as required
271 by the spec (thanks to Eric Marsden)
272 * bug fix: fixed GC safety issues when foreign functions are called with
273 non-base strings as arguments
274 * bug fix: more consistent error output for fatal-compiler-warnings, like
276 * bug fix: functions with proper names were showing up as NIL in
277 backtraces (reported by Edi Weitz, regression in 1.0.2)
279 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
280 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
281 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
282 produce more efficient code on the x86 if the compiler can determine
283 that (+ INDEX <constant>) does not require a bounds check and FOO
284 has an element type at least 8 bits wide.
285 * bug fix: references to undefined variables are handled the same way
286 in toplevel forms as in the normal compiler
287 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
289 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
290 (thanks to Jon Buller)
291 * improvement: faster compilation times for complex functions
292 * improvement: added readlink support to SB-POSIX (thanks to Richard
295 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
296 * improvement: experimental support for mach exception handling on
297 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
299 * improvement: support for GBK external format.
300 (thanks to Chun Tian (binghe))
301 * improvement: the debugger now displays variables that have been closed
302 over, in code compiled with (DEBUG 2) or higher
303 * improvement: support for executable cores on NetBSD (thanks to
305 * new feature: added a RESTART-FRAME debugger command
306 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
307 be used to provide an implementation for FILE-POSITION on Gray streams
308 (thanks to Eric Marsden)
309 * new feature: add syslog, openlog and closelog support to SB-POSIX
310 (thanks to Richard Kreuter)
311 * optimization: the function call overhead in code compiled with
312 a high DEBUG optimization setting is significantly
313 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
314 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
315 (thanks to Tony Martinez)
316 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
317 evaluated once (reported by Kevin Reid)
318 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
319 works again (thanks to Kilian Sprotte)
320 * bug fix: an error is signaled for tagbodies with duplicate tags
321 (thanks to Stephen Wilson)
322 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
323 * bug fix: Win32 port can now handle foreign code unwinding Lisp
324 stack frames from alien callbacks.
325 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
326 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
327 65k pages (thanks to David Woodhouse)
328 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
330 changes in sbcl-1.0.1 relative to sbcl-1.0:
331 * new platform: FreeBSD/x86-64, including support for threading.
332 * new feature: the compiler stores cross-referencing information
333 abount function calls (who-calls), macroexpansion (who-macroexpands)
334 and special variables (who-binds, who-sets, who-references) for code
335 compiled with (< SPACE 3). This information is available through the
336 sb-introspect contrib.
337 * new feature: users may subclass SEQUENCE, and have instances of
338 these classes interoperate with standard Common Lisp functions if
339 a number of methods are defined. (This feature is experimental
340 and the interface subject to change based on feedback from SBCL
341 users and the general community)
342 * improvement: sb-sprof traces call stacks to an arbitrary depth on
343 x86/x86-64, rather than the previous fixed depth of 8
344 * improvement: another pthread back-end of mutex "pthread-futex".
345 * bug fix: non-ascii command-line arguments are processed correctly
346 (thanks to Yaroslav Kavenchuk)
347 * bug fix: non-required arguments were not passed correctly when a method
348 defined using DEFMETHOD was called from a mop-generated method using
349 CALL-NEXT-METHOD (reported by Pascal Costanza)
350 * bug fix: recursion is now permitted in accessors through
351 SLOT-UNBOUND. (reported by Pascal Costanza)
352 * bug fix: an error was signaled at startup if the HOME environment
353 variable was defined, but had an empty value (reported by Peter Van Eynde)
354 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
355 signal a PROGRAM-ERROR, not a BUG.
356 * bug fix: SB-POSIX:READDIR works when built with large file support.
357 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
359 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
360 for better automatic indentation support. (thanks to Matt Pillsbury)
361 * optimization: loading generic functions no longer takes O(n^2) time,
362 proportional to the amount of methods in the generic function
363 (reported by Todd Sabin and Jeremy Brown)
364 * optimization: the FIND and POSITION family of sequence functions
365 are significantly faster on arrays whose element types have been
367 * improvements to the Windows port:
368 ** Intermittent heap corruption problems have been fixed. (thanks
369 to Alastair Bridgewater)
370 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
372 ** Lisp is able to unwind foreign exception frames from alien
373 callbacks. (thanks to Alastair Bridgewater)
375 changes in sbcl-1.0 relative to sbcl-0.9.18:
376 * improvement: experimental support for threading on FreeBSD/x86.
377 (thanks to NIIMI Satoshi)
378 * improvement: runtime option --dynamic-space-size can be used
379 to set the size of the dynamic space reserved on startup.
380 * improvement: floating point modes in effect are now saved in
381 core, and restored on startup.
382 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
383 startup, not time since first call to GET-INTERNAL-REAL-TIME.
384 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
385 threads are not running after *SAVE-HOOKS* have run.
386 * improvement: writes to CLOS instance slots are type-checked in code
387 compiled with (SAFETY 3)
388 * improvement: floating-point exception handling on FreeBSD (thanks to
390 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
391 (thanks to Zach Beane)
392 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
394 * improvement: added support for the Shift-JIS external format.
395 (contributed by NIIMI Satoshi)
396 * improvement: callbacks are supported on Linux/PPC. (thanks to
398 * bug fix: compiler bug triggered by a (non-standard) VALUES
399 declaration in a LET* was fixed. (reported by Kaersten Poeck)
400 * bug fix: file compiler no longer confuses validated and already
401 dumped structurres. (reported by Kaersten Poeck)
402 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
403 fill-pointer signals a type-error as required. (thanks to
405 * bug fix: disassemly of funcallable instances works.
406 * bug fix: single stepping on PPC.
407 * bug fix: fix thread-safety problems in the type system (generally
408 manifesting as nonsensical errors like "STRING is a bad type specifier
409 for sequences" or "The value 1 is not of type FIXNUM")
410 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
411 (reported by Josip Gracin)
412 * bug fix: an error is signaled for attempts to displace arrays with
413 incompatible element types (thanks to Mario Mommer)
414 * bug fix: more correct handling of wide characters in debug info
415 (bug reported by Attila Lendvai and fixed by Juho Snellman)
416 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
417 and don't cause extra consing
418 * optimization: MAP and MAP-INTO are significantly faster on vectors
419 whose elements types have been declared.
420 * Improvements to SB-SPROF:
421 ** Support for allocation profiling
422 ** Reduced profiling overhead, especially for long profiling runs
423 * Improvements to the Windows port:
424 ** floating point exceptions are now reported correctly.
425 ** stack exhaustion detection works partially.
426 ** more accurate GET-INTERNAL-REAL-TIME.
427 ** better RUN-PROGRAM behaviour in case of errors in the child
429 ** PROBE-FILE now simplifies pathnames correctly.
430 ** DIRECTORY now works correctly with :WILD-INFERIORS.
431 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
432 1st 1970 (although time timezone data will be unreliable).
433 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
435 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
436 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
437 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
439 * bug fix: two potential GC deadlocks affecting threaded builds.
440 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
441 returns T (reported by Anton Kazennikov)
442 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
443 with non-variable places
444 * bug fix: remove a race condition in the setting of
445 funcallable-instance functions, this should make threaded CLOS
446 code more stable against memory faults.
447 * bug fix: corruption of specials when unbinding is interrupted by an
448 asynchronous unwind (reported by Hannu Koivisto)
449 * improvement: the debugger will now also display local variables that
450 are only used once, for code compiled with a DEBUG optimization quality
453 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
454 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
455 * incompatible change: External-format support for FFI calls. The
456 SB-ALIEN:C-STRING no longer implies an ASCII
457 external-format. Instead the string is subject to external-format
458 conversion. Additionally return values of type SB-ALIEN:C-STRING
459 are by default of type (SIMPLE-ARRAY CHARACTER), not
460 SIMPLE-BASE-STRING. For an alien type that behaves like the old
461 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
462 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
463 * incompatible change: SB-EXT package no longer contains the
464 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
465 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
467 * incompatible change: the single-stepper is no longer available
468 on Alpha, Mips and Sparc platforms.
469 * minor incompatible change: the direct superclasses of
470 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
471 not (STANDARD-OBJECT FUNCTION). This makes the
472 class-precedence-lists of GENERIC-FUNCTION and
473 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
475 * minor incompatible change: the default stream external format on
476 non-unicode SBCL is no longer detected from the locale, but is always
478 * new feature: Add a version of evaluator that uses an interpreter instead
479 of the compiler. EVAL still uses the compiler by default, to switch it
480 to use the interpreter, set the value of the variable
481 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
482 * minor incompatible change: the single-stepper REPL has been merged
483 with the normal debugger (see the "Stepping" heading of the debugger help
484 for more details). The debugger command STEP will no longer switch
485 to the single-stepper REPL.
486 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
487 for a type now works.
488 * bug fix: loading of default sysinit file works. (thanks to Leonid
490 * bug fix: better detection of circularities in the file-compiler.
491 (reported by Marco Monteiro)
492 * bug fix: the CL pathname functions now work with files that have
493 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
494 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
495 systems with Unix98 pty semantics.
496 * bug fix: ASDF-INSTALL will now work with bsd tar.
497 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
499 * bug fix: timers expiring in dead threads no longer cause a
500 type-error (reported by Paul "Nonny Mouse").
501 * bug fix: thanks to more lightweight single-stepper instrumentation,
502 code compiled with (DEBUG 3) will compile and execute significantly faster,
503 and will have more accurate type-inferencing than before
504 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
505 whose bindings are modified
506 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
507 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
508 ** replace dummy implementations of CL:MACHINE-INSTANCE and
509 CL:SOFTWARE-VERSION with proper version
511 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
512 * feature: implemented the READER-METHOD-CLASS and
513 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
514 as specified by AMOP.
515 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
517 * optimization: faster LOGCOUNT implementation on x86 and x86-64
518 (thanks to Lutz Euler)
519 * optimization: hashing of general arrays and vectors has been
520 improved. (reported by Any Fingerhut)
521 * enhancement: SB-INTROSPECT is now able to find definitions of
522 profiled functions. (thanks to Troels Henriksen)
523 * enhancement: compiler-macro expansion applies now to FUNCALL forms
524 as well, allowing compiler-macros for SETF-functions to expand.
525 * enhancement: step-instrumentation no longer wraps known
526 single-value functions with multiple-value context, allowing
527 better type inference.
528 * fixed bug #337: use of MAKE-METHOD in method combination now works
529 even in the presence of user-defined method classes. (reported by
530 Bruno Haible and Pascal Costanza)
531 * fixed bug #339(c): if there are applicable methods not part of any
532 long-form method-combination group, call INVALID-METHOD-ERROR.
533 (reported by Bruno Haible)
534 * fixed bug #361: the :FUNCTION initarg in the protocol for
535 initialization of methods can now be used to override
536 internally-produced optimized functions. (reported by Bruno
538 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
539 system-provided lambda expression no longer cause warnings about
540 unbound #:|pv-table| symbols.
541 * bug fix: improved the handling of type declarations and the
542 detection of violations for keyword arguments with non-constant
544 * bug fix: potentially erronous calls to PATHNAME and
545 MERGE-PATHNAMES were being flushed in some cases.
546 (reported by Richard Kreuter)
547 * bug fix: compiled calls to TYPEP were mishandling obsolete
548 instances. (reported by James Bielman and Attila Lendvai)
549 * bug fix: format strings with ~> without matching ~< no longer
550 trigger an AVER, but signal an understandable error instead.
551 (reported by Antonio Martinez)
552 * bug fix: specifying an output-file without a pathname-type for
553 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
554 of input-file instead of "fasl". (reported by Robert Dodier)
555 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
556 (reported by James Y Knight).
557 * bug fix: compiler-macros-function did not consider the environment
558 argument for shadowing by local functions.
559 * bug fix: compiler-macros expansion was inhibited by local INLINE
561 * bug fix: inline expansions of known functions were subject to
562 step-instrumentation in high debug policies, leading to problems
564 * bug fix: compiler failed to differentiate between different CONS
566 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
567 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
568 * bug fix: #368: incorrect use of expressed vs. upgraded array
570 * bug fix: #306a: more precise unions of array types.
571 * thread-safety improvements:
572 ** CONDITION-WAIT could return early on Linux, if the thread was
573 interrupted and subsequently continued with SIGCONT.
574 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
576 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
577 * added support for the ucs-2 external format. (contributed by Ivan
579 * minor incompatible change: pretty printing of objects of type
580 (cons symbol) is, in the default pprint-dispatch-table, now
581 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
583 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
584 called later in a class's lifetime, possibly as late as when the
585 first instance of the class is created. Previously,
586 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
587 class became finalizeable.
588 * fixed bug: FILE-POSITION sometimes returned inconsistent results
589 for multibyte external-format streams. (thanks to "vbzoli")
590 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
591 with :ALLOCATION :CLASS inherited from superclasses of the
593 * fixed bug: anonymous classes can now be created using the :NAME
594 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
595 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
596 * fixed bug: core-files saved with :EXECUTABLE T can again be
597 executed when SBCL_HOME isn't set. (reported by James Knight)
598 * fixed bug: toplevel LOCALLY forms with declarations could
599 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
600 * fixed bug: printing from several different threads using different
601 values of *print-case* could cause invalid output, due to
602 some internal special variables of the printer not being bound
603 thread-locally (reported by Max Mikhanosha)
604 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
605 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
606 (reported by Pascal Costanza)
607 * fixed bug: FINALIZE-INHERITANCE is called from
608 REINITIALIZE-INSTANCE on classes when the class has previously
609 been finalized, as required by AMOP.
610 * minor code generation optimizations:
611 ** better register allocation in CLOS dispatching functions
612 ** overflow detection when coercing signed bytes to fixnums on x86-64
613 ** is now implemented with one IMUL instruction instead of three shifts
614 ** more efficient bit-vector access on x86 and x86-64
615 ** more efficient access to raw structure slots on x86 and x86-64
616 * fixed some bugs revealed by Paul Dietz' test suite:
617 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
620 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
621 * feature: thread support on Solaris/x86, and experimental thread support
623 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
625 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
626 default method for SLOT-UNBOUND.
627 * minor incompatible change: prevent the user from specializing the
628 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
629 somewhat counter to the intent of the protocol, I (CSR) think, and
630 additionally it just doesn't work in SBCL as currently
631 implemented, thanks to optimizations (that are always valid for
632 the other three SLOT-VALUEish functions, but not for the setter).
633 * minor incompatible change: the :SB-LDB feature is now enabled by
634 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
635 the low-level debugger.
636 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
637 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
638 down to an SB-SYS:FD-STREAM, allowing direct communication in
639 more cases. Temporary files and pipes are still used as a fallback
641 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
642 on the non-reentrant C functions localtime(3) and gmtime(3).
643 * bug fix: global optimization policy was not visible in LOCALLY and
645 * bug fix: class objects can be used as specializers in methods.
646 (reported by Pascal Costanza)
647 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
648 with a type error. (reported by blitz_ on #lisp)
649 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
650 failed with a type error. (reported by Pascal Bourguignon)
651 * bug fix: merging pathnames against defaults with :DIRECTORY
652 starting with '(:RELATIVE :BACK) should preserve the :BACK.
653 (reported by James Y Knight)
654 * bug fix: saving large (>2GB) cores on x86-64 now works
655 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
656 constant index and a (simple-array (signed-byte 32)) array
657 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
658 error (patch by Robert J. Macomber)
659 * feature: TIME now displays the amount of run-time spent in GC
660 * bug fix: The debugger now does a better job of respecting
661 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
662 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
663 workaround for bug 403.)
664 * bug fix: floating point exception handling now works on FreeBSD
665 (thanks to NIIMI Satoshi)
666 * fixed some bugs revealed by Paul Dietz' test suite:
667 ** MISC.641: LET-conversion were not supposed to work in late
669 * improvements to the Win32/x86 port:
670 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
671 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
673 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
674 * new feature: source path information is generated for macro-expansion
675 errors for use in IDE's like Slime (thanks to Helmut Eller)
676 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
677 * bug fix: compiler does not loop forever on an invalid type in
679 * improvement: compilation of most CLOS applications is significantly
681 * optimization: added a limited bytecode compiler for simple toplevel
682 forms, speeding up compilation and FASL loading
683 * bug fix: the statistical profiler now properly distinguishes anonymous
686 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
687 * minor incompatible change: in sbcl-0.9.11 (but not earlier
688 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
689 into subclasses of the finalized class. Now user calls to
690 FINALIZE-INHERITANCE finalize just the one class, and calls by the
691 system return before any subclasses are finalized.
692 * minor incompatible change: The reader no longer ignores errors
693 regarding non-existent packages in #+ and #- feature tests.
694 * new feature: command line options --no-sysinit, --no-userinit to
695 inhibit loading the corresponding init files
696 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
697 for sending data through UDP sockets (thanks to François-René Rideau)
698 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
699 error is signalled instead (thanks to François-René Rideau)
700 * minor incompatible change: Error signalling behaviour of lexical
701 operations violating package locks has changed slightly. Refer to
702 documentation on package locks for details.
703 * enhancement: EVAL can process IF-expressions without resorting to the
705 * bug fix: Some operations involving SIN, COS, or TAN weren't being
706 constant-folded properly due to missing out-of-line functions.
707 (reported by Mika Pihlajamäki)
708 * bug fix: LISTEN sometimes returned T even in cases where no data was
709 immediately available from the stream
710 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
711 were reversed. (reported by Levente Mészáros)
712 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
713 when given a vector displaced to an adjustable array. (reported
715 * bug fix: derivation of float boundaries from numbers outside the
716 appropriate float range (reported by John Wiseman)
717 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
719 * bug fix: precomputing cache entries for generic functions with
720 some subclasses of specializers as yet invalid does not attempt to
721 fill a cache line with a negative offset. (reported by Levente
723 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
724 allow condition class objects as arguments to DOCUMENTATION and
725 (SETF DOCUMENTATION); only find and set documentation for
726 structure names for the STRUCTURE doc-type. (suggested by Gary
728 * improvements to the Win32/x86 port:
729 ** (user-homedir-pathname) and default initialization file
730 locations now know about the user's "Documents and Settings"
731 directory (thanks to Yaroslav Kavenchuk)
732 ** run-program is implemented (thanks to Mike Thomas)
733 ** sockets support (thanks to Timothy Ritchey)
734 ** better backtrace support (thanks to Alastair Bridgewater)
735 ** sb-grovel supported
736 ** asdf-install and sb-posix work somewhat
737 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
738 * improvements to the Solaris/x86 port:
739 ** works on Solaris 11/Solaris Express
740 ** floating-point exception handling support
741 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
742 * fixed some bugs revealed by Paul Dietz' test suite:
743 ** REMOVE-METHOD returns its generic function argument even when
744 the method is not one of the generic functions' methods.
745 ** objects declared as MEMBER types can be admissible arguments to
747 ** printing characters should simply be printed by the FORMAT ~:C
749 ** compiler failure when compiling functions with hairy constant
750 defaults for optional parameters.
751 ** compiler produces wrong code when MAYBE-INLINE-expanding a
752 function, which is already optimized.
754 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
755 * new platform: experimental support for SBCL x86/Darwin, including
756 MacOS X 10.4.5 on Intel.
757 * new feature: Unicode character names are now known to the system
758 (through CHAR-NAME and NAME-CHAR).
759 * new feature: the filesystem location of SBCL's core file is
760 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
761 * minor incompatible change: the contrib modules SB-POSIX and
762 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
763 this change is to make it easier to distribute
764 location-independent binaries.
765 * bug fix: as implied by AMOP, standardized classes no longer have
766 slots named by external symbols of public packages. (reported by
768 * optimization: calling functions via constant symbols -- as in
769 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
770 via the function object as in (FUNCALL #'FOO).
771 * optimization: on x86 and x86-64, the calling convention for the
772 case of dealing with an unknown number of values has been altered
773 to be friendlier to the prediction heuristics implemented,
774 particularly with reference to CALL and RET pairing. (thanks to
775 Alastair Bridgewater)
776 * optimization: on x86, the code for access to thread-local symbol
777 values and binding/unbinding of thread-local symbols is smaller.
778 (thanks to Alastair Bridgewater)
779 * enhancement: CONSTANTP is now able to determine constantness of
780 more complex forms, including calls to constant-foldable standardized
781 functions and some special forms beyond QUOTE.
782 * fixed bug: occasional GC crashes on Solaris/x86
783 * optimization: x86-64 supports stack allocation of results of simple
784 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
785 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
786 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
787 (thanks to James Knight)
788 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
789 by the standard (thanks to Stephen Compall)
791 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
792 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
793 be used for bundling the runtime and the core file into one
794 executable binary. This feature is not currently supported on all SBCL
795 platforms. (thanks to James Bielman and NIIMI Satoshi)
796 * new feature: a generational or ephemeral garbage collector is now
797 the default on the PowerPC platform (both Linux and Darwin). The
798 old Cheney (stop and copy) collector is a build-time option.
799 (thanks to Cyrus Harmon, after Raymond Toy)
800 * minor incompatible change: the method by which SBCL finds its
801 contributed modules has changed; it no longer relies on symbolic
802 links from an $SBCL_HOME/systems directory, but searches directly
803 in the subdirectories of $SBCL_HOME.
804 * enhancement: the dynamic heap size on the Linux/PPC platform is
805 markedly larger, even using the older Cheney garbage collector.
806 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
807 certain complicated string types. (reported by Gary King)
808 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
809 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
810 * fixed bug: DOCUMENTATION on structures no longer signals an
811 error if no structure type of the right name exists. (reported by
813 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
814 applicable non-standard primary or :AROUND method on
815 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
816 no longer cause unbound variable errors. (reported by Kevin Reid)
817 * fixed bug: metacircle resolution in cases where methods have slots
818 added before the slots from STANDARD-METHOD. (reported by Jean
820 * fixed bug: the Power PC assembly code for calling into lisp
821 sometimes computed its return address wrongly (depending on the
822 15th bit of the address, fixed at link time). This used to
823 manifest itself in a segmentation violation while building PCL.
824 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
825 many others over the years)
826 * fixed bug: ROOM no longer reports silly numbers for stack usage if
827 the stack pointer (treated as a signed integer) is negative.
828 (thanks to Peter van Eynde)
830 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
831 * new platform: experimental support for the Windows operating
832 system has been added. (thanks to Alastair Bridgewater)
833 * fixed several bugs in and robustified the PPC FFI (including
834 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
835 * bug fix: allow non-simple string symbol names (reported by Paul
837 * bug fix: interrupt handling on NetBSD (thanks to Richard M
839 * bug fix: saving a core corrupted callbacks on x86/x86-64
840 * bug fix: closed a loophole in metacircularity detection and
841 grounding in the PCL implementation of CLOS.
842 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
843 (reported by tomppa on #lisp)
844 * bug fix: clear the direction flag on Lisp -> C transitions, as
845 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
846 (reported by Andrej Grozin and Hendrik Maryns)
847 * optimization: major improvements to GC efficiency on GENCGC platforms
848 * optimization: faster implementation of EQUAL
849 * optimization: emit more efficient opcodes for some common
850 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
851 * optimization: several other minor code-generation improvements on x86-64
852 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
854 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
855 * minor incompatible change: (SETF CLASS-NAME) and (SETF
856 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
857 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
858 by ANSI as a generic function, and for consistency (SETF
859 GENERIC-FUNCTION-NAME) is treated likewise.
860 * fixed bug #233.b: make constraint propagation notice when a variable
861 value is changed after it is referenced but before it is used
862 * fixed bug #296: no more arbitrary behaviour from filenames with
863 odd characters as --load arguments. (reported by Adam Warner)
864 * fixed bug #390: :CHARACTER-SET pathname components now work as
865 expected. (reported by Tim Daly Jr)
866 * fixed bug #391: complicated :TYPE intersections in slot
867 definitions no longer cause an error in PCL internals.
868 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
869 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
870 returning the number of octets which would be written to the
871 file-stream. (thanks to Robert J. Macomber)
872 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
873 arguments to the internal stream functions. (thanks to David
875 * bug fix: stack exhaustion is now handled on the x86/SunOS
876 platform. (thanks to Daisuke Homma)
877 * bug fix: more accurate ROOM results on GENCGC platforms
878 * optimization: improved type inference for arithmetic-for
879 index variables in LOOP
880 * optimization: faster floating-point SQRT on x86-64
881 * fixed some bugs revealed by Paul Dietz' test suite:
882 ** DOCUMENTATION returns NIL instead of "" for method combinations
883 that don't have a docstring
885 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
886 * minor incompatible change: (SETF CLASS-NAME) and (SETF
887 GENERIC-FUNCTION-NAME) are no longer generic functions, and
888 therefore are not customizeable by user code (as seems to be at
889 least permitted and maybe required by AMOP). As a consolation,
890 however, the SBCL implementation of these functions now calls
891 REINITIALIZE-INSTANCE as specified by AMOP.
892 * bug fix: slot-definition documentation is propagated as per ANSI
893 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
894 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
895 argument, as do eslotd initialization methods. (from Pascal
896 Costanza's "Closer" project)
897 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
898 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
900 * bug fix: it is now possible to have more than one subclass of
901 STANDARD-GENERIC-FUNCTION without causing stack overflow.
902 (reported by Bruno Haible, Pascal Costanza and others)
903 * bug fix: the dependent update protocol now works for generic
904 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
906 * bug fix: condition-class instances corresponding to
907 DEFINE-CONDITION forms are now created eagerly. (reported by
908 Kalle Olavi Niemitalo on comp.lang.lisp)
909 * bug fix: floating point printing is more accurate in some
910 circumstances. (thanks to Simon Alexander)
911 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
912 merged with *DEFAULT-PATHNAME-DEFAULTS*.
913 * bug fix: callbacks on OS X now preserve stack-alignment.
914 (thanks to Cyrus Harmon)
915 * enhancement: the x86-64 disassembler is much better at
916 disassembling SSE instructions. (thanks to Lutz Euler)
917 * enhancement: CHECK-TYPE on a variable now allows type-inference
918 (thanks to Vincent Arkesteijn)
919 * optimization: improved performance of EUC-JP external format.
920 (thanks to NIIMI Satoshi)
921 * optimization: performance improvements to IO on file streams of
922 :ELEMENT-TYPE CHARACTER
923 * optimization: much faster memory allocation on x86-64
924 * optimization: faster garbage collections (latency and throughput)
926 * optimization: faster bignum subtraction and division on x86 and x86-64
927 (thanks to Lutz Euler)
928 * optimization: more accurate type-inference for loops that use a
929 floating point index variable or a negative step.
931 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
932 * bug fix: add a workaround to SBCL looping infinitely at startup on
933 Linux kernels with apparently buggy implementations of personality().
934 (thanks to Svein Ove Aas)
935 * bug fix: Unicode symbols are correctly printed in LDB backtraces
936 (thanks to David Lichteblau)
937 * bug fix: local bindings shadow global symbol macros for
938 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
939 * optimization: non-open coded uses of numeric comparison operators
940 (e.g. >) no longer cons when called with more than one parameter
941 on platforms supporting dynamic-extent allocation.
942 * enhancement: saving cores with foreign code loaded is now supported
943 on MIPS/Linux in addition to the previously supported platforms.
944 * bug fix: FIND-RESTART now tests for activity, not applicability when given
945 a restart object as identifier. (reported by Helmut Eller for CMUCL)
946 * bug fix: division by zero in sb-sprof when no samples were collected
947 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
948 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
949 (thanks to Alexander Kjeldaas)
950 * new feature: ignoring the return values of destructive functions
951 like NREVERSE signals a compile-time style-warning.
952 (thanks to Kevin Reid)
953 * new feature: the alignment of alien structure fields can be
954 explicitly specified. (thanks to Cyrus Harmon)
955 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
956 and dump core on SIGQUIT
958 ** incompatible change: threads do not inherit values of specials
959 from their parents (see manual)
960 ** bug fix: threads stacks belonging to dead threads are freed by the
961 next exiting thread, no need to gc to collect thread stacks anymore
962 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
963 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
964 ** bug fix: dynamic variable and thread start related gc lossage
965 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
967 * fixed some bugs revealed by Paul Dietz' test suite:
968 ** SUBTYPEP is slightly more accurate on heinously complicated
969 CONS types where some of the members have uncertain (in the
970 NIL, NIL sense) type relationships to each other.
972 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
973 no longer purified unless :PURIFY T is explicitly specified.
974 ** Non-purified cores are significantly smaller than before
976 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
977 * new feature: timers based on Zach Beane's excellent timer package
978 * added support for the following external formats: koi8-u,
979 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
980 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
981 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
982 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
983 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
984 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
985 * incompatible change: a threaded SBCL will no longer revert to
986 non-threaded mode on non-NPTL systems, but refuse to start entirely.
987 * bug fix: interrupts are disabled until startup is complete; no
988 more sigsegvs when receiving a signal to soon
989 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
991 * bug fix: add a workaround for the memory randomization features in
992 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
993 workaround will only be in effect on systems with the proc filesystem
995 * bug fix: printing objects of type HASH-TABLE signals a
996 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
998 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
999 have been running for over 50 days. (reported by Gilbert Baumann)
1000 * bug fix: the logic for getting names of functions gets less
1001 confused when confronded with alternate-metaclass
1002 funcallable-instances. (reported by Cyrus Harmon)
1003 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1004 consistent, even on internal alternate-metaclass objects.
1005 * bug fix: flush closure information collected by physical
1006 environment analysis prepass before the main pass. (bug reported
1008 * bug fix: compiler pack phase does not modify a hashtable, which is
1009 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1010 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1011 may be expanded. (reported by Alexander <malishev> on c.l.l)
1012 * bug fix: no more style-warnings when compiling code using LAST
1013 under high-SPEED low-SPACE settings. (reported by David Wallin
1015 * fixed some incompatibilities between SBCL's MOP and the MOP
1017 ** the METAOBJECT class is now implemented;
1018 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1019 STANDARD-OBJECT, as required;
1020 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1021 now compatible (as required by VALIDATE-SUPERCLASS); there
1022 remains a consistency requirement over the presence or absence
1023 of the FUNCTION class in the superclass list of finalized
1024 classes; see the manual for more details;
1025 ** the :AROUND method for COMPUTE-SLOTS on
1026 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1027 requested slot ordering.
1029 ** bug fix: parent thread now can be gc'ed even with a live
1031 ** bug fix: binding a special with PROGV to no value is not
1032 the same as that symbol not having been bound (thanks to
1034 ** bug fix: binding specials is thread safe (thanks to
1036 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1037 and SB-SPROF do not die with 'no handler for signal XX in
1038 interrupt_handle_now(..)' anymore
1039 ** bug fix: WITH-TIMEOUT works with multiple running threads
1040 * fixed some bugs revealed by Paul Dietz' test suite:
1041 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1042 the :method-class keyword argument.
1044 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1045 * new port: the Solaris operating system on x86 processors is now
1046 mostly supported, though some rough edges in the environment
1047 remain. (thanks to Daisuke Homma)
1048 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1049 space for its heap. (thanks to Thiemo Seufer)
1050 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1051 closures. (thanks to Thiemo Seufer)
1052 * minor incompatible change: eof selects abort in the debugger.
1053 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1054 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1056 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1057 deprecated, and will go away in a future revision of SBCL.
1058 * minor incompatible change: GC-ON and GC-OFF are no longer
1059 implemented with a counter, it does not matter how many times gc
1060 is switched on or off
1061 * bug fix: discriminating functions for generic function classes
1062 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1063 make invalid assumptions about method precedence order. (reported
1065 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1066 platforms. (thanks to Thiemo Seufer)
1067 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1068 * bug fix: correct pathname printing with printer escaping is on.
1069 (thanks to Kevin Reid)
1070 * bug fix: complex VOP definitions in "user-space" no longer trigger
1071 package locks. (reported by Zach Beane)
1072 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1073 for funcallable-instance functions, and is no different from
1075 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1076 characters in the current readtable. (reported by Nicholas Neuss)
1077 * bug fix: SUBTYPEP on various CONS types returns more a more
1078 accurate acknowledgment of its certainty.
1079 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1080 lists in some cases. This partially fixes bug 384.
1081 * flush all standard streams before prompting in the REPL and the
1083 * bug fix: signal handling and triggering gc do not conflict
1084 directly anymore, in particular a high frequency sb-sprof does
1085 not prevent gc from running
1086 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1087 approximation for timezone and DST information between the
1088 universal time epoch and the smallest negative 32-bit time_t.
1089 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1090 year 1899 so long as the encoded time is non-negative.
1091 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1092 the correct answer for non-constant rotate amounts when performing
1093 an inline 32-bit rotation.
1095 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1096 there is only one thread in the session
1097 ** bug fix: memory leak for streams created in one thread and
1098 written to in another
1099 ** bug fix: lockup when compiled with gcc4
1100 ** bug fix: race that allows the gc to be triggered when gc is
1102 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1103 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1105 ** bug fix: finished threads are gc'ed properly
1106 * fixed some bugs revealed by Paul Dietz' test suite:
1107 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1108 has arguments with a different set of applicable methods from
1109 the orignal arguments.
1110 ** The type error thrown by MAP now has a correct expected-type
1112 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1113 name a compiled function.
1114 ** Three MISC tests where a large bignum was improperly coerced to
1115 a float that couldn't represent that bignum during type
1116 derivation were fixed.
1117 ** SUBTYPEP can now handle types involving the negation of a
1118 list-form FUNCTION type.
1119 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1120 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1121 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1123 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1124 * New feature: Experimental support for bivalent streams: streams
1125 opened with :element-type :default now allow character and binary
1126 (unsigned-byte 8) I/O
1127 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1128 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1130 * bug fix: no more highly sporadic "couldn't check whether ~S is
1131 readable" when reading a stream and an interrupt hits in the middle
1132 of a select system call
1133 * compiler better recognizes complex arrays (reported by Eduardo
1135 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1136 for variables on SBCL built with linkage-tables. (reported by Luis
1138 * various error reporting improvements.
1139 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1140 (Thanks to Thiemo Seufer)
1141 * bug fix: nested reader invokations work correctly
1142 * bug fix: it is possible to have simultaneous references to foreign
1143 code and foreign data with the same name.
1145 ** added x86-64 support
1146 ** incompatible change: the threading api now works with thread
1147 objects instead of thread ids
1148 ** bug fix: threads are protected from signals and interruption when
1149 starting up or going down
1150 ** bug fix: a race where an exiting thread could lose its stack to gc
1151 ** bug fix: don't halt on infinite error in threads if possible
1152 ** fixed numerous gc deadlocks introduced in the pthread merge
1153 ** bug fix: fixed thread safety issues in read and print
1154 ** bug fix: debugger doesn't hang on session lock if interrupted at
1155 an inappropriate moment
1156 ** bug fix: run-program is now thread safe(r)
1157 ** bug fix: inner with-recursive-lock no longer releases the mutex
1158 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1159 * fixed some bugs revealed by Paul Dietz' test suite:
1160 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1161 EXPECTED-TYPE slots filled.
1162 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1164 ** MAKE-CONDITION accepts classes as type-designators.
1165 ** COMPILE may never return NIL.
1166 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1167 range before calling Unix time functions
1169 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1170 * numerous signal handling fixes to increase stability
1171 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1172 * minor incompatible change: we now correctly canonize default
1173 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1174 as per the MOP, rather than the historical (INITARG INITFUNCTION
1175 INITFORM). (reported by Bruno Haible)
1176 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1177 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1178 for more information.
1179 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1180 pathname is a directory pathname.
1181 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1182 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1184 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1185 :METACLASS argument in addition to a class name. (reported by
1186 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1187 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1188 (reported by Bruno Haible; patch from Gerd Moellmann)
1189 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1191 * bug fix: more cleanups to the floating point exception handling on
1192 x86-64 (thanks to James Knight)
1193 * bug fix: the compiler does not try to constant fold calls of
1194 COERCE and BIT-* functions when they return freshly constructed
1195 objects. (reported by Nikodemus Siivola and Paul Dietz)
1196 * optimization: improved the MIPS versions of generic (in the
1197 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1198 * optimization: direct conversion of (unsigned-byte 32) to floats on
1199 the PowerPC platform.
1200 * optimization: structure instances with raw slots now use less
1201 memory, and probably show better memory locality. (thanks to
1203 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1204 are treated as requests for stack allocation on the x86-64,
1205 Alpha-32, PPC and SPARC platforms.
1206 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1207 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1208 (thanks to Tony Martinez)
1210 ** gcing a dead thread can no longer lead to lockups
1211 ** threads block signals until they are set up properly
1212 ** errno is no longer shared by threads
1213 ** interrupt-thread restores the eflags register on x86
1214 ** fixed some lockups due to gc/thread interaction
1215 * fixed some bugs revealed by Paul Dietz' test suite:
1216 ** invalid dotted lists no longer raise a read error when
1217 *READ-SUPPRESS* is T
1218 ** signal an error if a symbol that names a declaration is used
1219 as the name of a type, or vice versa
1220 ** allow using the (declare (typespec var*)) abbreviation for
1221 (declare (type typespec var*)) with all type specifiers
1222 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1223 ** always return NIL from PPRINT-POP when OBJECT is NIL
1224 ** don't signal errors when pretty-printing malformed LABELS,
1225 FLET or MACROLET forms
1226 ** declarations in a DOLIST body are also in scope for the
1228 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1230 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1233 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1234 * fixed cross-compiler leakages that prevented building a 32-bit
1235 target with a 64-bit host compiler.
1236 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1237 opened with :IF-EXISTS :OVERWRITE.
1238 * fixed bug 281: error for an invalid qualifier in a short-form method
1239 combination method is not signalled until the faulty method is called.
1240 * bug fix: iteration variable type inferrer failed to deal with open
1241 intervals. (reported by Alan Shields)
1242 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1243 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1244 or more runtime options were provided to the sbcl binary.
1245 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1246 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1247 * optimization: there's now a fast-path for fixnum arguments in the
1248 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1249 * optimization: the code generated on x86-64 is more compact thanks
1250 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1251 * bug fix: floating-point exception handling now partly works on
1252 x86-64. (Thanks to James Knight)
1253 * improvement to the MIPS backend from Thiemo Seufer: C-style
1254 64-bit long long arguments and return values to alien functions
1256 * fixed some bugs revealed by Paul Dietz' test suite:
1257 ** the type-error signalled from WARN has a filled-in DATUM slot.
1258 ** the type-error required when a stream is not associated with
1259 a file has the stream as its datum.
1260 ** type-errors on single-floats on x86-64 no longer have
1261 :INVALID-OBJECT as the datum
1262 ** the type-errors signalled for invalid function names now have
1263 a correct expected type
1264 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1265 for structures defined with a :TYPE. Documentation strings for
1266 typed structures are no longer immediately discarded
1267 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1268 broadcast streams and synonym streams. FILE-LENGTH now also works
1269 on broadcast streams.
1271 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1272 * incompatible change: the --noprogrammer option, deprecated since
1273 version 0.7.5, has been removed. Please use the equivalent
1274 --disable-debugger option instead.
1275 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1277 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1278 inoperational for a while now) has been completely removed.
1279 * null lexical environments are now printed as #<NULL-LEXENV>,
1280 significantly reducing the amount of clutter in typical backtraces.
1281 * documentation on weak pointers, finalization, and after GC hooks
1282 has been added to the manual.
1283 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1284 as other specialized array types, is much faster. SUBSEQ and
1285 COPY-SEQ on such arrays have also been sped up.
1286 * optimization: EQL is now more efficient when at least other argument
1287 is known to be of type (OR FIXNUM (NOT NUMBER)).
1288 * fixed bug: the runtime is now less vulnerable to changes in the
1289 size of the SBCL object on OS X, and virtual memory is reserved for
1290 all spaces that need to be at a fixed address.
1291 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1292 * fixed bug: finalizers and after GC hooks that cause consing are now
1294 * fixed bug: compiler error messages and summaries are now printed to
1295 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1296 * fixed inference of the upper bound of an iteration variable.
1297 (reported by Rajat Datta).
1298 * fixed bug 211e: calling local functions with duplicated constant
1299 keyword argument no longer causes a bogus style warning about an
1301 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1302 ftype declaration to be disregarded. (reported by Dave Roberts)
1303 * fixed bug 373: caused by erronous compilation of references to alien
1304 variables in the runtime on ppc/darwin.
1305 * fixed bug 376: CONJUGATE type deriver.
1306 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1307 (reported by Baughn on #lisp)
1308 * a cross-compiler bug on non-x86 platforms has been identified and
1309 fixed. (thanks to Bruno Haible)
1310 * improvements to the MIPS runtime code for increased stability.
1311 (thanks to Thiemo Seufer)
1312 * increased the maximimum compact environment size to allow
1313 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1314 * partial workaround for bug 135: don't name the function we're
1315 calling for hairy cases of EVAL, so as not to accumulate one environment
1316 entry per call to EVAL. (reported by Kevin Reid)
1317 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1318 * optimization: type testing for non-vector arrays should be faster.
1319 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1321 * bug fix: setting 31st element of a bit vector to zero did not work
1323 * bug fix: redefining a class definition which failed due to a
1324 previous accessor / function clash now works (but see BUGS entry
1325 #380 for more problems in this area). (thanks to Zach Beane)
1326 * the long form of DEFINE-METHOD-COMBINATION disables method group
1327 checking when given a single method group with pattern *. (thanks
1329 * on x86 compiler supports stack allocation of results of simple
1330 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1331 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1332 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1333 * fixed some bugs related to Unicode integration:
1334 ** the restarts for recovering from input and output encoding
1335 errors only appear when there is in fact such an error to
1337 * fixed some bugs revealed by Paul Dietz' test suite:
1338 ** MISC.549 and similar: late transformation of unsafe type
1339 assertions into derived types caused unexpected code
1341 ** SCALE-FLOAT type deriver is less wrong.
1342 ** type derivers for EXP, LOG and similar functions compute result
1343 types for complex arguments better.
1344 ** (MISC.563) CONJUGATE type deriver works for very restricted
1346 ** out-of-line type testers for character strings are available.
1347 ** EQUAL compiler transform understands specialness of objects
1349 ** accessing double-floats stored on the stack now works on x86-64.
1350 ** debugger internals could sometimes create invalid lispobjs,
1351 resulting in GC crashes.
1352 ** MISC.548: type check weakening can convert required type into
1354 ** initialization forms for bindings are not in scope of free special
1357 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1358 * incompatible change: thread support for non-NPTL systems has
1359 been removed - locking is buggy and unreliable. A threaded
1360 SBCL build will now warn at startup and refuse to create
1361 new threads, unless futex support is detected in the kernel
1362 * incompatible change: the top level REPL now has only an ABORT
1363 restart associated with it, not TOPLEVEL and ABORT as it used to.
1364 TOP and TOPLEVEL are now available as debugger commands for
1365 returning to the top level.
1366 * incompatible change: forms evaluated in the REPL now use the
1367 global optimization policy.
1368 * incompatible change: user- and system-initialization files are
1369 no longer processed with LOAD, but by READ and EVAL; hence the
1370 global optimization policy, startup package, readtable, etc,
1372 * The .fasl file format number has been incremented because of
1373 various incompatible changes.
1374 * internal entry point details and argument counts no longer appear
1375 in backtraces unless explicitly requested by setting
1376 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1377 * built-in and standard functions no longer have names like "top
1378 level local call to FOO".
1379 * fixed bug 32: functions defined in non-null lexical environments
1380 now have more legible printed representation
1381 * fixed bug 33: functions defined in non-null lexical environemnts
1382 are now more amenable to inspection by INSPECT.
1383 * workaround for bug 354: XEPs no longer appear in backtraces unless
1384 explicitly requested.
1385 * fixed bug: receiving the signal which results from attempting to
1386 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1387 SIGBUS on other *BSDs) on architectures where the C stack is also
1388 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1389 to debugger confusion or wild instability. (reported by Cheuksan
1391 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1392 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1393 (reported by Lutz Euler)
1394 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1395 compiled code. (reported by Paul Dietz)
1396 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1397 specialized parameter to a method to something that is not TYPEP
1398 the specializer is now possible.
1399 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1400 face of package deletion.
1401 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1402 pathname. (reported by David Tolpin on c.l.l)
1403 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1404 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1405 STRING-STREAM and FILE-STREAM, respectively.
1406 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1407 than previously; in addition, its test suite is now run on build.
1408 (thanks to Luke Gorrie)
1409 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1410 * optimization: added a immediate representation for single-floats
1412 * fixed some bugs revealed by Paul Dietz' test suite:
1413 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1414 ** attempting to create a package with a colliding nickname causes
1415 correctable errors to be signalled.
1416 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1417 ** several x86-64 backend bugs related to sign-extension of immediate
1420 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1421 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1422 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1424 * fixed loading of multiply forward-referenced layouts.
1425 (thanks to Cheuksan Wang)
1426 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1427 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1428 (see COMPILE-FILE documentation for details of :PRINT option)
1429 * fixed bugs 19 and 317: fixed-format floating point printing is
1430 more accurate. This also fixes a bug reported by Adam Warner
1431 related to the ~@F format directive.
1432 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1434 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1435 dispatch table if the from-char is a dispatch macro character.
1436 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1437 by the wordsize no longer ignore the last word. (reported by Lutz
1439 * fixed bug in type checking of dynamic-extent variables. (reported
1441 * optimization: sequence traversal functions use their freedom to
1442 coerce function designators to functions.
1443 * optimization: code with many calls to CLOS methods specialized on
1444 CLOS classes has had redundant type checks removed.
1445 * optimization: added declarations to speed up operations that access
1446 the internal character database (for example STRING-UPCASE)
1447 * optimization: comparison operations between floats and sufficiently small
1448 fixnums no longer create extra rationals
1449 * fixed some bugs related to Unicode integration:
1450 ** portions of multibyte characters at the end of buffers for
1451 character-based file input are correctly transferred to the
1452 start of the buffer at the next read.
1453 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1454 passing it through to OPEN.
1455 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1456 argument given to internal calls to OPEN.
1457 ** the built-in comment readers (introduced by character sequences
1458 ";" and "#|") are more forgiving to encoding errors; they will
1459 STYLE-WARN and then attempt to resync the stream at a character
1460 boundary. (thanks to Teemu Kalvas)
1461 * fixed some bugs in the x86-64 port:
1462 ** Negative short int return values from c-calls are sign-extended
1464 ** The stack is aligned to 16-bytes for c-calls, as required by
1465 the ABI. (thanks to Cheuksan Wang)
1466 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1467 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1468 for enums. (thanks to Vincent Arkesteijn)
1469 ** Multiple small optimizations and bugfixes for floating point
1471 * fixed some bugs revealed by Paul Dietz' test suite:
1472 ** Space, Tab, Linefeed, Return and Page have the invalid
1473 secondary constituent character trait.
1474 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1476 ** WITH-INPUT-FROM-STRING should only update the index place on
1478 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1479 works more reliably.
1480 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1481 with one-dimensional arrays with fill pointers.
1482 ** TYPE-OF failed on a complex with an integer realpart and a
1484 ** compiler failure during type inference for the code of form
1485 (IF (EQL X (THE ...)) ...) (MISC.535).
1487 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1488 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1489 platform. The port supports 61-bit fixnums, large memory spaces
1490 and reloading shared object files.
1491 * enhancement: saving cores with foreign code loaded is now
1492 supported on ppc/Darwin in addition to the previously supported
1494 * enhancement: the statistical profiler now walks deeper into the
1495 call stack for more meaningful call-graphs and accrued time
1496 reports (x86/x86-64 only). It also now reports time spent in
1498 * enhancement: it is now possible to trace most individual methods
1499 of a generic function in addition to tracing the generic function
1501 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1503 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1504 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1505 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1506 produces an error. (thanks to Vincent Arkesteijn)
1507 * bug fix: NAMESTRING on pathnames with :WILD components in their
1508 directories works correctly. (thanks to Artem V. Andreev)
1509 * fixed bug 125: compiler preserves identity of closures. (reported
1511 * bug fixed: functions with &REST arguments sometimes failed with
1512 "Undefined function" when compiled with (DEBUG 3). (reported by
1514 * bug fix: overflow during compiling of setting element of a bit
1515 vector with constant index and value. (reported by Timmy Douglas)
1516 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1517 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1518 * on x86 compiler partially supports stack allocation of dynamic-extent
1520 * GO and RETURN-FROM do not check the extent of their exit points
1521 when compiled with SAFETY 0.
1522 * fixed some bugs related to Unicode integration:
1523 ** encoding and decoding errors are now much more robustly
1524 handled; it should now be possible to recover even from invalid
1525 input or output to the terminal. (thanks to Teemu Kalvas)
1526 ** provided a first cut at implementing STRING-TO-OCTETS and
1527 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1528 ** altered the SB-MD5 contributed module slightly, changing the
1529 interface just enough for it to be supportable for builds where
1530 lisp characters are not eight bits.
1531 * fixed some bugs revealed by Paul Dietz' test suite:
1532 ** the FORMATTER-generated functions for ~V[ conditionals require
1533 the correct number of arguments.
1534 ** READ-FROM-STRING returns the mandated second value when applied
1535 to displaced strings.
1536 ** the #\Rubout and #\Backspace characters are treated as invalid
1537 constituent characters by the tokenizer.
1539 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1540 * new feature: reloading changed shared object files with
1541 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1542 * new feature: references to foreign variables and functions
1543 can now be compiled and loaded before the corresponding shared
1544 object file is loaded, as long as the foreign definitions are
1545 available at runtime.
1546 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1547 supported. (thanks to Dan Debertin)
1548 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1549 just keywords. (thanks to Vincent Arkesteijn)
1550 * fixed bug #331: structure-class instances corresponding to
1551 DEFSTRUCT forms are now created eagerly.
1552 * fixed bug #345: backtraces from calls to undefined functions work
1553 on x86 as well. Related bug #61 is now also partially fixed on x86
1554 (backtraces from throws to unknown catch tags.)
1555 * bug fix: lambda-list parsing is now stricter vrt. order and number
1556 of lambda-list keywords.
1557 * bug fix: as specified by AMOP, an error is signalled if a
1558 class-option appears multiple times in a DEFCLASS form. (reported
1560 * bug fix: RANDOM can be compiled when the compiler derives the type
1561 of its numeric argument as a disjoint set of small integers.
1562 (reported by Paul Dietz)
1563 * bug fix: starting a core saved with shared objects loaded when
1564 those objects are not available no longer causes threaded SBCL to
1565 hang. (reported by Sean Ross)
1566 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1568 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1569 argument, which must always be NIL. (reported by Kalle Niemitalo)
1570 * bug fix: printing 1.0d+23 no longer results in an error.
1571 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1572 * bug fix: structure slot setters preserve evaluation order. (thanks
1574 * fixed some bugs related to Unicode integration:
1575 ** RUN-PROGRAM can allow its child to take input from a Lisp
1576 stream. (reported by Stefan Scholl)
1577 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1578 locales. (reported by Ken Causey)
1579 * fixed some bugs revealed by Paul Dietz' test suite:
1580 ** INCF, DECF and REMF evaluate their place form as specified in
1582 ** FORMATTER expands ~{ ~} iteration directives with V or #
1583 parameters correctly.
1584 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1585 consequent uses no arguments correctly.
1586 ** the system has a partial understanding of the (COMPLEX RATIO)
1588 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1591 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1592 * new feature: a build-time option (controlled by the :SB-UNICODE
1593 keyword feature, enabled by default) for building the system with
1594 support for the entire 21-bit character space defined by the
1596 * new feature: the system now has rudimentary external-format
1597 support; the primary user-visible change at this time is that
1598 characters with the high bit set (such as lower-case-e-acute) will
1599 print correctly to a terminal in a UTF-8 environment.
1600 * minor incompatible change: BASE-CHAR no longer names a class;
1601 however, CHARACTER continues to do so, as required by ANSI.
1602 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1603 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1604 has been moved to the SB-EXT package (temporarily re-exported from
1606 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1607 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1609 * fixed bug #351: better error-handlind and reporting for malformed
1611 * fixed bug #350: bignum-printing is now more memory-efficient,
1612 allowing printing of very large bignums, eg. (expt 2 10000000).
1613 (reported by Bruno Haible)
1614 * fixed bug #302: better primitive-type selection for intersection
1616 * fixed bug #308: non-graphic characters now all have names, as
1617 required. (reported by Bruno Haible)
1618 * bug fix: redefining a class with different superclasses now correctly
1619 removes it from the direct-subclasses of its previous superclasses.
1620 (reported by David Morse)
1621 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1622 new value now works. (reported by Bruno Haible)
1623 * bug fix: correct canonicalization of multiple non-standard slot
1624 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1625 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1626 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1627 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1628 now exists, an signals an error.
1629 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1630 during macroexpansion for non-iteration variables as well. (reported
1631 by Bruno Haible for CMUCL)
1632 * bug fix: Cyclic structures and unprintable objects in compiler
1633 messages no longer cause errors. (reported by Bruno Haible)
1634 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1635 and READ-FROM-STRING all now return a primary value of NIL if
1636 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1637 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1638 (reported by Bruno Haible for CMUCL)
1639 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1640 do not designate a condition. (reported by Bruno Haible for
1642 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1643 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1644 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1645 permitting resolution in favour of any of the conflicting symbols.
1646 (reported by Bruno Haible for CMUCL)
1647 * bug fix: EQUAL compiler optimizations is less aggressive on
1648 strings which can potentially compare true despite having distinct
1649 specialized array element types.
1650 * bug fix: unit enumerations can be defined without dividing by
1651 zero. (thanks to Vincent Arkesteijn)
1652 * FORMAT compile-time argument count checking has been enhanced.
1653 (report from Bruno Haible for CMUCL)
1654 * a partial workaround for the bug 262: the compiler does not try to
1655 inline-expand a local function doing RETURN-FROM from a deleted
1656 BLOCK. (thanks to Peter Denno for the bug report and to David
1657 Wragg for the simple test case)
1658 * fixed some bugs revealed by Paul Dietz' test suite:
1659 ** RENAME-PACKAGE allows all package designators as new package
1661 ** constraint propagation and lambda variable substitution are
1662 more cautious in dealing with partially deleted code.
1663 ** compiler sometimes lost reoptimization passes.
1664 ** CERROR, given a condition as condition designator, passes its
1665 remaining arguments to the continue format control without
1667 ** Case-altering FORMAT directives work correctly on non-ASCII
1669 ** The REAL type specifier handles bounds outside the floating
1670 point ranges without signalling FLOATING-POINT-OVERFLOW.
1671 ** Functions with IR1-transformations can create intercomponent
1672 references to global functions.
1673 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1675 ** FORMAT ~R treats a nil value for its first parameter correctly.
1677 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1678 * enhancement: saving cores with foreign code loaded is now
1679 supported on x86/NetBSD and sparc/Linux in addition to the previously
1680 supported platforms.
1681 * bug fix: on some platforms repeated installations caused multiple
1682 copies of HTML documentation to be installed -- should not happen
1683 any more. (reported by Stefan Scholl)
1684 * bug fix: parsing self-recursive alien record types multiple times
1685 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1686 original patch by Helmut Eller for CMUCL)
1687 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1688 (thanks to Richard Kreuter)
1689 * bug fix: defining classes whose accessors are methods on existing
1690 generic functions in other (locked) packages no longer signals
1691 bogus package lock violations. (reported by François-René Rideau)
1692 * bug fix: special variables as DEFMETHOD parameters no longer have
1693 associated bogus type declarations. (reported by David Wragg and
1695 * bug fix: read-write consistency on streams of element-type
1696 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1697 * bug fix: redefiniton of the only method of a generic function with
1698 no DEFGENERIC no longer emits a full WARNING. In addition,
1699 redefinition of generic functions with no DEFGENERIC to an
1700 incompatible lambda list now signals an error. (thanks to Zach
1702 * bug fix: DEFGENERIC now works even when there's a function of the
1703 same name in an enclosing lexical environment. (thanks to Zach
1705 * fixed compiler failure, caused by instrumenting code during
1706 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1707 * optimization: added loop analysis and improved register allocation
1708 * fixed some bugs revealed by Paul Dietz' test suite:
1709 ** POSITION on displaced vectors with non-zero displacement
1710 returns the right answer.
1711 ** (SIMPLE-STRING) is a valid type specifier for sequence
1713 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1715 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1716 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1718 ** The justification version of the FORMAT ~< directive treats
1719 non-zero minpad parameter correctly.
1721 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1722 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1723 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1724 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1725 the supported interface.
1726 * new feature: Single-stepping of code compiled with DEBUG 2 or
1727 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1728 * new feature: saving cores with foreign code loaded is now
1729 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1730 Timothy Moore's work for CMUCL)
1731 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1732 parameters to * instead of NIL if no initform is supplied.
1733 (reported by Johan Bockgaard)
1734 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1735 correctly when FUNCALL appears as the car of the form. Note:
1736 despite this FUNCALL forms are not currently subject to
1737 compiler-macro expansion. (port of Raymond Toy's fix for the
1738 same from CMUCL, reported by Johan Bockgaard)
1739 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1740 (thanks for Teemu Kalvas)
1741 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1742 case instead of terminating the iteration (thanks for Julian
1743 Squires, Sean Champ and Raymond Toy)
1744 * bug fix: incorrect expansion of defgeneric that caused a style
1745 warning. (thanks for Zach Beane)
1746 * bug fix: slot accessor effective method computation works properly
1747 for classes with multiple non-standard applicable methods on
1748 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1749 * on x86 compiler supports stack allocation of results of LIST and
1750 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1751 CMUCL implementation by Gerd Moellmann)
1752 * fixed some bugs revealed by Paul Dietz' test suite:
1753 ** FORMAT strings with both the ~<~:;~> form of the justification
1754 directive and pretty-printing directives cause an error.
1756 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1757 * incompatible change: the internal functions
1758 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1759 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1760 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1761 instead of the old functions.
1762 * new feature: on platforms where "dladdr" is available foreign
1763 function names now appear in backtraces. (based on Helmut Eller's
1765 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1766 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1768 * documentation: ASDF manual is now distributed with SBCL.
1769 * bug fix: SBCL can now load its contributed modules with REQUIRE
1770 even if the system-provided entries have been removed from
1771 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1773 * bug fix: backtraces involving undefined functions or assembly
1774 routines are more informative. (thanks to Brian Downing)
1775 * bug fix: mutually referent alien structures now work correctly.
1776 (reported by Rick Taube)
1777 * bug fix: structures defined by WITH-ALIEN can be referred to
1778 within other definitions in the same WITH-ALIEN.
1779 * bug fix: division operators (MOD, TRUNCATE and the like) with
1780 constant zero divisors and integer dividends no longer generate
1782 * bug fix: provide default methods for INPUT-STREAM-P and
1783 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1784 * bug fix: improve the detection and resolution of MOP metacycles
1785 (where effective method computation depends on the generic function
1786 having its effective method computed). (reported by Bruno Haible)
1787 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1788 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1789 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1790 * bug fix: pathnames with relative directory components can be
1791 represented relative to default pathnames.
1792 * optimization: in taking the GCD of bignums, reduce the two bignums
1793 to approximately the same size (using Euclid's algorithm) before
1794 applying the more sophisticated binary GCD. (thanks to Juho
1796 * optimization: COUNT on bitvectors now operates word-at-a-time.
1797 * optimization: ASH with a positive, but not necessarily constant,
1798 (leftwards) shift, when in a modular context, is compiled to a
1800 * fixed some bugs revealed by Paul Dietz' test suite:
1801 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1802 if the corresponding argument is NIL.
1803 ** FORMAT directives accepting a minpad parameter treat negative
1805 ** literal commas as character parameters to FORMAT directives are
1807 ** literal spaces directly after ~<Newline> directives within a
1808 format-logical-block (~:< ~@:>) do not induce :FILL-style
1809 conditional newlines.
1810 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1811 as specified: it no longer includes conditional newlines).
1812 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1814 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1815 :PER-LINE-PREFIX argument does not evaluate to a string.
1817 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1818 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1819 the manual for details; for now, package locks can be disabled by
1820 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1821 if no major problems are found then it is likely that they will be
1822 compiled in unconditionally.
1823 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1824 unsupported operators on all platforms. To load a shared library
1825 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1826 object file, link it into a shared library outside of SBCL and
1827 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1829 * bug workaround: ROOM T and the GC were not working together
1830 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1831 reporting facility aren't preserved. That reporting has been
1832 disabled, so now until and unless someone figures out how to make it
1833 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1834 * minor incompatible change: as threatened around sbcl-0.8.0, the
1835 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1836 The symbols are also exported from SB-PCL for backwards
1837 compatibility, but more so than before SB-PCL should be treated as
1838 an implementation-internal package.
1839 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1841 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1842 It is known as of this release not to work on the Alpha, however.
1843 * fixed bug #167: errors signalled due to illegal syntax in method
1844 bodies are now more legible.
1845 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1846 designators and can hence be used with TYPEP.
1847 * fixed bug #333: CHECK-TYPE now ensures that the type error
1848 signalled, if any, has the right object to be accessed by
1849 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1850 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1851 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1853 * fixed bug #334: programmatic addition of slots using specialized
1854 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1855 and :ALLOCATION :CLASS slots.
1856 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1857 float exponents. (rereported by Peter Seibel)
1858 * fixed a bug: #\Space (and other whitespace characters) are no
1859 longer considered to be macro characters in standard syntax by
1860 GET-MACRO-CHARACTER.
1861 * fixed bug: initialization of condition class metaobjects no longer
1862 causes an instance of the condition to be created. (reported by
1864 * fixed bug: it is now possible to have slots such that
1865 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1866 description is neither :INSTANCE nor :CLASS.
1867 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1868 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1869 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1870 non-standard SLOT-DEFINITION-ALLOCATION values.
1871 * fixed bugs: various race conditions handling exiting threads.
1872 CL-PPCRE's thread torture test now passes.
1873 * fixed arguably-a-bug: GC time proportional to number of threads in
1874 system even when most of them are idle
1875 * optimization: improved performance of BIT and SBIT on bit-vectors.
1876 * .fasl file incompatibility: The fasl file version number has
1877 been incremented because of changes associated with package locks.
1879 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1880 * minor incompatible change: the system no longer provides
1881 optimization hints (conditions which are TYPEP
1882 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1883 mode; these hints are still emitted when higher SPEED optimization
1885 * new contrib module: a sampling profiler (profiling by statistical
1886 sampling, rather than by instrumenting functions) is available as
1887 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1888 * the behaviour of the standard function ED is now customizeable by
1889 third parties through a hook variable: see ED's documentation
1890 string for information on the protocol.
1891 * the compiler no longer emits efficiency notes for (FUNCALL X)
1892 when the type of X is uncertain under default optimization
1894 * fixed bug 276: mutating a binding of a specialized parameter to a
1895 method to something that is not TYPEP the specializer is now
1897 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1898 exhibit the required behaviour on the x86 platform. (thanks to
1899 Peter van Eynde, Eric Marsden and Bruno Haible)
1900 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1901 even for difficult arguments. (reported by Peter Graves)
1902 * fixed bug 141a: the backquote printer now descends quoted
1904 * fixed another bug in backquote printing: no more destructive
1905 modification of the form's list structure. (reported by Brian
1907 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1908 move between its address being taken and the call to
1909 interrupt_thread, fixing a crashing race condition.
1910 * the SB-POSIX contrib implementation has been adjusted so that it
1911 no longer exhibits ridiculously poor performance when constructing
1912 instances corresponding to C structs.
1914 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1915 * minor incompatible change: the sb-grovel contrib now treats C
1916 structures as alien (in the sense of SB-ALIEN) objects rather than
1917 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1918 has implications for memory management of client code
1919 (sb-grovel-returned objects must now be manually managed) and for
1920 type safety (alien objects now have full types).
1921 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1922 used to control emission of compiler diagnostics, rather than the
1923 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1924 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1925 quality should be considered deprecated.
1926 * install.sh now installs the user manual as well
1927 * (not quite a new documentable feature, but worth considering in
1928 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1929 beginnings of a semantically meaningful condition hierarchy is
1930 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1932 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1933 designator as the defaults argument.
1934 * fixed bug: Displaced arrays whose displaced-to array has become
1935 too small now cause ARRAY-DIMENSION to signal an error, providing
1936 for safer bounds-checking. (reported by Bruno Haible)
1937 * fixed bug: DEFCLASS slot definitions with identical :READER and
1938 :WRITER names now signal a reasonable error. (reported by Thomas
1940 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1942 * fixed bug: Invalid slot specification errors now print correctly.
1943 (thanks to Zach Beane)
1944 * fixed bug 320: Shared to local slot value transfers in class
1945 redefinitions now happen corrently from superclasses as
1946 well. (reported by Bruno Haible)
1947 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1949 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1950 improper lists correctly. (reported by Bruno Haible)
1951 * fixed bug 313: source-transform for <fun-name> was erroneously
1952 applied to a call of a value of a variable with name <fun-name>.
1953 (reported by Antonio Menezes Leitao)
1954 * fixed bug 307: The obsolete instance protocol ensures that
1955 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1956 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1957 remove dead unknown-values globs from the middle of the stack.
1958 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1959 easier to resume long computations after using *BREAK-ON-SIGNALS*
1960 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1961 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1962 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1963 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1964 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1965 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1967 * fixed a (fairly theoretical) bug in string printing: if
1968 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1969 does not have array-element-type equal to the most general string
1971 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1972 function name. (thanks to Nikodemus Siivola)
1973 * fixed bug: compile-time format string checker failed on
1974 non-closed ~{. (reported by Thomas F Burdick)
1975 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1976 don't warn on legal loop code involving more than one aggregate
1977 boolean. (thanks to Nikodemus Siivola)
1978 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1979 in keyword position to MAKE-PACKAGE was not being reported as
1981 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1982 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1984 * fixed bugs 280 and 312: the checking for multiple definitions in a
1985 file is less likely to become confused by uses of inline
1987 * fixed bug: the #S reader macro performs the keyword coercion
1988 specified for slot names. (reported by Kalle Niemitalo)
1989 * fixed bug: lambda lists may contain symbols whose names start with
1990 & but are not lambda-list-keywords; their occurrence triggers a
1992 * fixed bug 321: define-method-combination argument lambda lists do
1993 not cause invalid code to be generated when &optional or &aux
1994 variables have default values. (reported by Bruno Haible)
1995 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1996 have CLOS classes; this appears also to have fixed reported
1997 instability in stack exhaustion detection.
1998 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1999 MUFFLE-WARNING when no associated restart is present is now
2001 * optimization: rearranged the expansion of various defining macros
2002 so that each expands into only one top-level form in a
2003 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2005 * optimization: used a previously little-used slot in symbols to
2006 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2008 * fixed some bugs revealed by Paul Dietz' test suite:
2009 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2011 ** Fixed an optimization bug related to inheritance of initforms
2012 from local to shared slots.
2013 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2014 ** CAST optimizer forgot to flush argument derived type.
2015 ** print/read consistency on floats is now orders of magnitude
2016 more likely. (thanks also to Bruno Haible for a similar report
2018 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2019 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2020 for objects of type REAL. Make it so.
2021 ** SXHASH is specified (infelicitously) to respect similarity,
2022 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2023 it so. (thanks to Markus Ziegler)
2024 ** on the Alpha, the compiler succeeds in compiling functions
2025 returning a known number of arguments greater than 63.
2026 ** fixed handling of invalid NIL arguments in keyword position
2028 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2030 ** provided a readably-printable representation for RANDOM-STATE
2032 ** ensured that pathnames, where they have a namestring, always
2033 print using #P"..." syntax.
2035 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2036 * Support for the forthcoming 2.0 version of the NetBSD kernel
2037 running on x86 hardware has been added. (thanks to Perry
2038 E. Metzger most immediately, and others for their past work)
2039 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2040 current release version; SBCL's OpenBSD support had been broken
2041 since about the time of OpenBSD's switch to ELF binary format.)
2042 * [placeholder for DX summary]
2043 ** user code with &REST lists declared dynamic-extent, under high
2044 speed or space and low safety and debug optimization policy.
2045 * The manual has been converted to Texinfo format and the debugger
2046 chapter from the cmucl manual has been added.
2047 * A facility has been added to extract documentation strings from
2048 sbcl and store them as Texinfo-formatted snippets for inclusion in
2049 the manual (via Texinfo's @include directive)
2050 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2051 the test case to Dave Roberts)
2052 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2053 pointers. (reported by Sean Ross)
2054 * bug fix: PROFILE output is printed nicely even for large numerical
2055 values. (thanks to Zach Beane)
2056 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2057 greater than 32 handle EOF correctly.
2058 * bug fix: on X86 an immediate argument of the IMUL instruction is
2059 correctly printed in disassembly. (thanks to Lutz Euler)
2060 * bug fix: class slots in redefined classes preserve their old
2061 values. (thanks to Bruno Haible and Nikodemus Siivola)
2062 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2063 succeeds. (reported by Marco Baringer)
2064 * fixed some bugs revealed by Paul Dietz' test suite:
2065 ** READ-SEQUENCE now works on ECHO-STREAMs.
2066 ** RATIONALIZE works more according to its specification. (thanks
2069 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2070 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2071 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2072 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2073 should matter to you only if you rebind the printer control
2074 variables and then find you want different bindings in the
2075 debugger than in the ordinary execution of your program.)
2076 * The runtime build system has been tweaked to support building
2077 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2078 assembler and linker. (thanks to Nikodemus Siivola)
2079 * Unbound, undefined, undeclared variables now trigger full
2080 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2081 more often programmer error than deliberate exploitation of undefined
2083 * optimization: the hash algorithm for strings has changed to one
2084 that is less vulnerable to spurious collisions. (thanks to Juho
2086 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2087 needless bounds checking. (thanks to Juho Snellman)
2088 * optimization: implemented multiplication as a modular
2089 (UNSIGNED-BYTE 32) operation on the PPC backend.
2090 * fixed some bugs revealed by Paul Dietz' test suite:
2091 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2093 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2094 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2095 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2097 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2099 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2101 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2102 their output stream on EOF from read.
2103 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2104 have been read to end-of-file.
2105 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2107 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2108 description of determination of which consecutive characters
2110 ** Printing the "Space" character with escaping on now yields "#\\ ",
2111 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2112 ** Reading floating-point numbers with *READ-BASE* set to a number
2113 less than 10 works correctly.
2114 ** Reading floating-point numbers with *READ-BASE* set to a number
2115 more than 10 works correctly.
2116 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2117 the readtable currently in effect.
2119 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2120 * minor incompatible change: parsing of namestrings on a physical
2121 (Unix) host has changed; numbers after the final #\. in a
2122 namestring are no longer interpreted as a version field. This is
2123 intented to be largely invisible to the user, except that the
2124 meaning of the namestring "*.*.*" has changed: it now refers to a
2125 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2126 should usually be replaced by
2127 (make-pathname :name :wild :type :wild :version :wild)
2128 with the added benefit that this is more likely to be portable.
2129 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2130 option to OPEN now signals an error if the file being opened
2131 exists; this may have an impact on existing code.
2132 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2133 signals received, on the PowerPC platforms (both Linux and
2134 Darwin). (thanks to Pierre Mai for pointing out the location of
2136 * several fixes on OS X: The system now builds and runs cleanly on
2137 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2138 (thanks to Brian Mastenbrook)
2139 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2140 second-resolution: integer multiples of 1/3600 between -24 and 24.
2141 (thanks to Vincent Arkesteijn)
2142 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2143 type when called with 1 argument; PEEK-CHAR checked type of
2144 PEEK-TYPE only after having read first character from a
2145 stream. (reported by Peter Graves)
2146 * bug fix: the garbage collector now has much better locality
2147 behaviour, and in particular no longer treats all memory as being
2148 exhausted when many small objects point to each other in a deeply
2150 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2151 recognized as being TYPEP their class.
2152 * bug fix: the PUSHNEW documentation string has been corrected.
2153 (thanks to Vincent Arkesteijn)
2154 * bug fix: defaulting of the value for the last of an atypically
2155 large number of multiple values being bound was not being
2156 performed correctly on the Alpha or PPC platforms
2157 * optimization: implemented multiplication as a modular
2158 (UNSIGNED-BYTE 32) operation on the x86 backend.
2159 * optimization: SEARCH on simple-base-strings can now be open-coded.
2160 (see also contrib/compiler-extras.lisp for inspiration for
2161 teaching the compiler about the Boyer-Moore algorithm).
2162 * value, returned by MAX (and MIN) called with several EQUALP, but
2163 not EQL, arguments now does not depend on compiler settings.
2164 * fixed some bugs revealed by Paul Dietz' test suite:
2165 ** in stack analysis liveness information is propagated from
2166 non-local entry points.
2167 ** pathwise CAST removing failed when the CAST node did not start
2169 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2170 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2172 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2173 host is already defined.
2174 ** RENAME-FILE works on streams instead of signalling an internal
2176 ** PEEK-CHAR uses the current readtable when determining whether
2177 or not a character is whitespace.
2178 ** MERGE-PATHNAMES handles the case when the pathname does not
2179 specify a name while the default-pathname specifies a version.
2180 ** Pathnames now stand a better chance of respecting print/read
2182 ** Attempting to use standardized file system operators with a
2183 pathname with invalid :DIRECTORY components signals a
2185 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2187 ** DIRECTORY on logical pathnames is more correct.
2188 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2189 signal a TYPE-ERROR if their argument is not a stream.
2190 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2191 designator argument does not designate a stream.
2192 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2193 examining the synonym.
2194 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2196 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2197 element-type larger than ([UN]SIGNED-BYTE 32).
2199 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2200 * When built with the :SB-FUTEX feature, threaded builds now take
2201 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2202 for faster/more reliable mutex and condition variable support.
2203 * Incompatible change (but one you probably shouldn't have been using
2204 anyway): the interface and code for arbitrating between multiple
2205 threads in the same user session has been redesigned.
2206 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2207 error when called without an explicit environment argument.
2208 (thanks to Nikodemus Siivola)
2209 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2210 confused about their position. (thanks to Adam Warner and Gerd
2212 * bug fix: Pretty printing backquoted forms with unquotations in the
2213 argument list position of various code constructs such as LAMBDA
2214 now works correctly. (reported by Paul Dietz)
2215 * bug fix: Pretty printing unquotations no longer loses all
2216 stream position information.
2217 * optimization: performance of string output streams is now less
2218 poor for multiple small sequence writes.
2219 * optimization: performance of CSUBTYPEP in the presence of complex
2220 expressions involving CONS and NOT many times has been improved.
2221 (reported by Paul Dietz)
2222 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2224 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2225 streams for the REPL, for the debugger, and so on. (thanks to
2227 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2228 * fixed some bugs revealed by Paul Dietz' test suite:
2229 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2230 is ignored if it is too small, rather than propagating through
2231 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2232 ** extremely complex negations of CONS types were not being
2233 sufficiently canonicalized, leading to inconsistencies in
2235 ** VALUES tranformer lost derived type.
2237 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2238 * fixed a bootstrapping bug: the build process no longer assumes
2239 that the various BOOLE-related constants have the same value in
2240 host and target lisps. (noted by Paul Dietz' test suite on an
2241 SBCL binary built from CLISP)
2242 * The system can now be dynamically linked on the MIPS platform,
2243 which enables dynamic loading of foreign code from Lisp. (thanks
2244 to Ralf Baechle for discussions on the MIPS ABI)
2245 * The system now records debugging information for its own source
2246 files in a filesystem-position-independent manner, relative to
2247 the "SYS" logical host.
2248 * fixed a compiler bug: MV-LET convertion did not check references
2249 to the "max args" entry point. (reported by Brian Downing)
2250 * tweaked disassembly notes to be less confident about proclaiming
2251 some instruction as an LRA. (thanks to Brian Downing)
2252 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2253 now each have their own history, command character, and other
2254 characteristics. (thanks to David Lichteblau)
2255 * fixed some bugs revealed by Paul Dietz' test suite:
2256 ** compiler failure in compiling LOGAND expressions including a
2258 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2259 shift greater than 32.
2260 ** FLUSH-DEST did not mark blocks for type check regeneration.
2261 ** HANDLER-CASE failed to accept declarations in handler clauses
2262 in some circumstances.
2264 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2265 * New code in contrib/sb-introspect (still probably not entirely
2266 stable yet) provides some support for smart Lisp development
2267 environments like SLIME.
2268 * The conditions signalled for errors occurring when loading .fasl
2269 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2270 in a way which should help ASDF recover gracefully.
2271 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2272 stuff has been cleaned up. If you code contrib/ stuff, this might
2273 affect you, and you can look at contrib/README, contrib/STANDARDS,
2274 and/or the 0.8.4.27 diff to check.
2275 * In full calls the compiler now does not generate checks for declared
2276 argument types for all arguments.
2277 * various threading fixes
2278 ** and some experimental patches which didn't make it into
2279 the main tree for this release, but which are shipped in
2280 contrib/experimental-thread.patch as a possible fix for some
2281 failures (deadlock, spinning...) in GC-intensive multithreaded
2283 * fixed PPC build problem (source code incompatibility of different
2284 library versions): added offsetof() hackery which attempts to divine
2285 where glibc maintainers put uc_mcontext today
2286 * fixed bug 282: compiler does not trust type assertions while passing
2287 arguments to a full call.
2288 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2289 &OPTIONAL VALUES type parameter.
2290 * fix bug 214: algorithm for noting rejected templates is now more
2291 similar to that of template seletion. (also reported by rydis on
2293 * fixed bug 141b: printing backquoted information readably and prettily
2294 inserts a space where necessary.
2295 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2296 (CHARACTER 10) are now reported as errors, rather than propagated
2297 as unknown types. (reported by piso on #lisp)
2298 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2299 with values NIL and :ERROR. (thanks to Milan Zamazal)
2300 * fixed bug 191c: CLOS now does proper keyword argument checking as
2301 described in CLHS 7.6.5 and 7.6.5.1.
2302 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2303 longer raise an error; further, using a list as a for-as-arithmetic
2304 counter now raises a meaningful error.
2305 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2306 now understood by sequence creation functions such as MAKE-SEQUENCE
2308 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2309 a STRING-INPUT-STREAM.
2310 * compiler enhancement: SIGNUM is now better able to derive the type
2312 * type declarations inside WITH-SLOTS are checked. (reported by
2314 * fixed some bugs revealed by Paul Dietz' test suite:
2315 ** incorrect optimization of TRUNCATE for a positive first
2316 argument and negative second.
2317 ** compiler failure in let-convertion during flushing dead code.
2318 ** compiler failure while deriving type of TRUNCATE on an
2319 interval, containing 0.
2320 ** ASH of a negative bignum by a negative bignum count now returns
2322 ** intersection of CONS types now canonicalizes properly, fixing
2323 inconsistencies in SUBTYPEP.
2325 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2326 * incompatible change: The --disable-debugger command line
2327 option now clobbers the debugger at a more fundamental
2328 level, by redefining #'INVOKE-DEBUGGER instead of by
2329 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2330 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2331 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2332 enter the debugger REPL and then suffer recursive errors
2333 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2334 while under the new system, BREAK in --disable-debugger mode
2335 terminates the system just as an unhandled error would.
2336 * fixed compiler performance when processing loops with a step >1;
2337 * bug fix: DOCUMENTATION now retrieves generic function
2338 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2339 support has been systematized, and now supports the methods
2340 specified by ANSI, along with a default method and a method for
2341 slot documentation. (reported by Nathan Froyd)
2342 * bug fix: effective methods associated with a generic function are
2343 no longer cached over a change of that generic function's method
2344 combination. (reported by Andreas Fuchs)
2345 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2346 names a non-existent directory. (thanks to Andreas Fuchs)
2347 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2348 the PPC platform, lead to stack corruption; this has been fixed.
2349 (reported by Rainer Joswig)
2350 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2351 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2352 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2353 arithmetic in general, is now much more reliable on the PPC
2355 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2356 platform now returns the right answer.
2357 * optimization: restored some effective method precomputation in
2358 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2359 precomputation is now tunable.
2360 * optimization: compiler-internal data structure use has been
2361 reviewed, and changes have been made that should improve the
2362 performance of the compiler by about 20%.
2363 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2364 simple-base-strings and simple-bit-vectors is improved.
2365 * optimization: the optimization of 32-bit logical and arithmetic
2366 functions introduced in version 0.8.3 on the x86 has been
2367 implemented on the mips, ppc and sparc platforms; an
2368 implementation of the same facility, but for 64-bit arithmetic,
2369 has been added for the alpha.
2370 * microoptimization: the compiler is better able to make use of the
2371 x86 LEA instruction for multiplication by constants.
2372 * bug fix: in some situations compiler did not report usage of
2373 generic arithmetic in (SPEED 3) policy.
2374 * bug 145b fix: compiler used wrong type specifier while converting
2375 MEMBER-types to numeric.
2376 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2378 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2379 index argument now works properly on the Alpha platform.
2380 * bug fix: floating point exception treatment on the Alpha platform
2382 * bug fix: FILE-POSITION works much better on string input and
2383 output streams. (thanks to Nikodemus Siivola)
2384 * bug fix: many threading/garbage collection symptoms sorted.
2385 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2386 might be pseudo-atomic.
2387 * internal change: Stopping for GC is now done with signals not
2388 ptrace. GC is now done in whichever thread wanted it, instead of
2390 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2392 * bug fix: result form in DO is not contained in the implicit
2394 * incompatible change: ICR structure is changed; the value part of
2395 CONTINUATION is now called LVAR; corresponding functions are
2396 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2397 * added type deriver for ISQRT (thanks to Robert E. Brown).
2398 * bug fix: better support for loading from the command line when an
2399 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2401 * fixed some bugs revealed by Paul Dietz' test suite:
2402 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2403 ** ROUND and FROUND now give the right answer when given very
2404 small float arguments.
2405 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2407 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2408 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2409 ** LCM should return a non-negative integer.
2410 ** PARSE-INTEGER returned the index of a terminator instead of the
2411 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2412 ** PARSE-INTEGER returned an incorrect index being applied to a
2414 ** LCM with two arguments of 0 returns 0 rather than signalling
2416 ** unsigned addition of a 32-bit constant with the high bit set no
2417 longer causes an internal compiler error on the x86.
2418 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2419 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2420 with negative last argument.
2421 ** byte specifiers with zero size and position no longer cause
2422 an error during type derivation.
2423 ** bignum multiplication on the Alpha platform now returns the
2425 * porting: The system now builds on SuSE AMD64, although it still
2426 generates a 32-bit binary.
2427 * .fasl file incompatibility: The fasl file version number has
2428 been incremented (because of the changes to internal compiler
2429 data structures referred to above).
2431 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2432 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2433 more accurately, on the Darwin kernel running on PowerPC hardware.
2434 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2435 * Compiler code deletion notes now signal a condition of type
2436 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2437 an associated MUFFLE-WARNING restart.
2438 * The compiler now performs limited argument count validation of
2439 constant format strings in FORMAT, and where appropriate in ERROR,
2440 CERROR and WARN. (thanks to Gerd Moellmann)
2441 * New ASDF-INSTALL contrib can be used for automatic download and
2442 installation of third-party Lisp code from CCLAN or other sites
2444 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2445 which forces another thread to execute a function supplied by the
2447 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2448 now accept and act upon their :ELEMENT-TYPE keyword argument.
2449 (reported by Martin Atzmueller, Edi Weitz)
2450 * bug fix: FILE-POSITION now accepts position designators up to
2451 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2452 is the greater. (thanks to Patrik Nordebo)
2453 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2454 Kalle Olavi Niemitalo)
2455 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2456 printable. (reported by Eric Marsden)
2457 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2458 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2459 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2460 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2461 (thanks to Stig Sandoe)
2462 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2463 UNREAD-CHAR now correctly includes the unread character in the
2464 target sequence. (thanks to Gerd Moellmann)
2465 * bug fix in threaded builds: the system can now be suspended and
2466 resumed by shell job control with minimal disruption.
2467 * bug fixes in times and timezones >2038AD
2468 * better handling of "where is GNU make?" problem in build scripts
2469 (thanks to Nikodemus Siivola)
2470 * new optimization: inside a named function any reference to a
2471 function with the same name is considered to be a self-reference;
2472 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2473 optimization quality.
2474 * new optimization on x86: logical functions and + now have
2475 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2476 used when the result is truncated to 32 bits.
2477 * VALUES declaration is partially enabled.
2478 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2479 * fixed some bugs revealed by Paul Dietz' test suite:
2480 ** The system now obeys the constraint imposed by
2481 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2482 types form a lattice under type intersection.
2483 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2484 ** ASSOC now ignores NIL elements in an alist.
2485 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2486 and (1+ MOST-POSITIVE-FIXNUM) answers.
2487 ** The addition of a method with invalid qualifiers to a generic
2488 function does not cause an error to be signalled immediately;
2489 a warning is signalled, and the error is generated only on
2490 calling the generic function.
2491 * changed .fasl file version number, in part to add type codes for
2492 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2493 obscure ANSI requirements
2495 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2496 * fixed bug 148: failure to inline-expand a local function left
2497 garbage, confusing the compiler.
2498 * fixed bugs 3cd: structure slot readers perform type check if the
2499 slot can have an invalid value (i.e. it is either not initialized
2500 or can be written with a less specific slot writer).
2501 * bug fix: the compiler now traps array references to elements off
2502 the end of an array; previously, the bounds checking in some
2503 circumstances could go off-by-one.
2504 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2506 * type declarations for array element types now obey the description
2507 on the CLHS page "Declaration TYPE", as per discussions on
2508 sbcl-help around 2003-05-08. This means that a declaration
2509 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2510 declaration, all references to BAR will be asserted or assumed
2511 (with THE, so dependent on compiler policy) to involve objects of
2512 type FOO. Note that no such declaration is implied in
2513 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2514 * declared types of functions from the "Conditions"
2515 chapter. (reported by Paul Dietz)
2516 * bug fix: CERROR accepts a function as its first argument.
2517 * bug fix: NTH an NTHCDR accept a bignum as index
2518 arguments. (reported by Adam Warner)
2519 * optimization: character compare routines now optimize comparing
2520 against a constant character. (reported by Gilbert Baumann)
2521 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2522 argument now works properly on the MIPS platform.
2523 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2524 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2525 declared to have a functional type, does not cause an error
2527 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2528 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2529 * fixed bug: if last continuation of a deleted block has a
2530 destination, this destination should be deleted too. (reported by
2532 * fixed a bug in the bootstrap process: the host compiler's values
2533 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2534 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2535 test case from Patrik Nordebo)
2536 * improved the ability of the disassembler on the PPC platform to
2537 provide helpful disassembly notes.
2538 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2539 the class in more cases than previously.
2540 * bug fix: FILE-POSITION now understands :START and :END for
2541 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2542 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2543 8) data. (thanks to David Lichteblau)
2544 * bug fix: it is possible to add a method to a generic function
2545 without lambda list.
2546 * bug fix: reader failed to signal END-OF-FILE inside an
2547 object representation. (reported by Nikodemus Siivola)
2548 * fixed some bugs revealed by Paul Dietz' test suite:
2549 ** LAST and [N]BUTLAST should accept a bignum.
2550 ** condition slot accessors are methods.
2551 ** (VECTOR NIL) is a subtype of STRING.
2553 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2554 * minor incompatible change: some nonsensical specialized lambda
2555 lists (used in DEFMETHOD) which were previously ignored now signal
2557 * minor incompatible change: the system is now aware of the types of
2558 variables in the COMMON-LISP package, and will signal errors for
2559 most violations of these type constraints (where previously they
2560 were silently accepted).
2561 * minor incompatible change: COMPILE-FILE now uses the freedom
2562 afforded (ANSI 3.2.2.3) to use derived function types for
2563 functions defined in the same file. This also permits the system
2564 to warn on static type mismatches and function
2565 redefinition. (Currently it does not work with high DEBUG level.)
2566 * minor incompatible change: VALUES declaration is disabled.
2567 * When issuing notes, the compiler now signals a condition of type
2568 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2569 restart for use in user handlers. It is expected that the
2570 COMPILER-NOTE condition will eventually become a condition
2571 supertype to a hierarchy of note types, which will then be
2572 handleable in a similar fashion. However, at the moment, no such
2573 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2574 but it's an implementation detail, not a classification for the
2576 * Changes in type checking closed the following bugs:
2577 ** type checking of unused values (192b, 194d, 203);
2578 ** template selection based on unsafe type assertions (192c, 236);
2579 ** type checking in branches (194bc).
2580 * A short form of VALUES type specifier has ANSI meaning (it has
2581 increased the number of situations when SBCL cannot perform type
2583 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2584 keywords or constants is permissible.
2585 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2586 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2587 classes. (thanks to Antonio Martinez)
2588 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2589 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2590 argument to a pretty-print stream. Instead, it leaves any such
2591 operations to DESCRIBE-OBJECT methods.
2592 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2594 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2595 lambda lists. (thanks to David Lichteblau)
2596 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2597 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2598 (thanks to Gerd Moellmann)
2599 * fixed bug 246: increased compilation speed of long
2600 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2602 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2604 * DEFCONSTANT now throws a condition of type
2605 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2606 constant to a non-EQL value; CONTINUE and ABORT restarts
2607 respectively change and preserve the value.
2608 * fixed bug 63: The code walker, part of the implementation of CLOS,
2609 is now better at handling symbol macros.
2610 * bug fix: There is no longer an internal implementation type named
2611 CL:LENGTH. (reported by Raymond Toy)
2612 * bug fix: In macro-like defining macros/special operators the
2613 implicit block does not enclose the lambda list.
2614 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2615 enclosed in parentheses) are not suitable as type specifiers, and
2616 their use properly signals an error now.
2617 * bug fix: An argument count mismatch for a type specifier in code
2618 being compiled no longer causes an unhandled error at compile
2619 time, but signals a compile-time warning.
2620 * fixed simple vector readable printing
2621 * bug fix: DESCRIBE takes more care over whether the class
2622 precedence list slot of a class is bound before accessing it.
2623 (reported by Markus Krummenacker)
2624 * bug fix: FORMATTER can successfully compile pretty-printer format
2625 strings which use variants of the ~* directive inside.
2626 * bug fix: SEARCH now applies its TEST predicate to the elements of
2627 the arguments in the correct order. (thanks to Wolfhard Buss)
2628 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2629 in type inference. (thanks to Robert E. Brown)
2630 * bug fix: Reading in symbols with an explicit package name of ""
2631 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2632 * fixed some bugs revealed by Paul Dietz' test suite:
2633 ** NIL is now allowed as a structure slot name.
2634 ** Arbitrary numbers, not just REALs, are allowed in certain
2635 circumstances in LOOP for-as-arithmetic clauses.
2636 ** Multiple class redefinitions before slot access no longer
2637 causes a type error.
2638 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2639 association between the name and a class.
2640 ** Generic functions with non-standard method-combination and over
2641 five methods all of which return constants no longer return NIL
2642 after the first few invocations. (thanks to Gerd Moellmann)
2643 ** CALL-NEXT-METHOD with no arguments now passes the original
2644 values of the arguments, even in the presence of assignment.
2645 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2647 ** DISASSEMBLE works with closures and funcallable instances.
2648 ** ADD-METHOD now returns the generic function, not the new method.
2649 ** FIND-METHOD signals an error if the lengths of the specializers
2650 is incompatible with the generic function, even if the ERRORP
2652 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2653 which its argument is a member.
2654 ** DEFCLASS only redefines the class named by its class-name
2655 argument if that name is the proper name of the class;
2656 otherwise, it creates a new class.
2657 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2658 of the UNBOUND-SLOT condition to the name of the slot.
2659 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2660 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2661 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2662 SLOT-MAKUNBOUND in the specified fashion.
2664 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2665 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2666 cross-compilation host. As a consequence, we can now bootstrap our
2667 way up to SBCL starting with a bare gcc toolchain and human-readable
2668 source code (first the source to CLISP, then the source to SBCL).
2669 * A contributed module containing a partial implementation of the
2670 simple-streams interface has been included. (thanks to Rudi
2672 * A contributed module implementing the RFC1321 Message Digest
2673 Algorithm, known as MD5, has been included.
2674 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2675 no longer has any effect, as the code controlled by this feature
2676 has been deleted. (As far as we know, no-one has ever built using
2677 this feature, and its semantics were confused in any case).
2678 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2679 work on conditions (as required by the ANSI specification),
2680 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2681 expected behaviour on conditions. Users should note, however,
2682 that such behaviour is not required by the ANSI specification,
2683 and so use of this behaviour may render their code unportable.
2684 * fixed some bugs revealed by Paul Dietz' test suite:
2685 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2687 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2688 ** SXHASH on condition objects no longer returns NIL.
2689 ** :ALLOCATION :CLASS slots are better treated; their values are
2690 updated on class redefinition, and initforms inherited from
2691 superclasses are applied.
2692 ** REMOVE-METHOD returns its generic function argument even when
2693 no method was removed.
2694 ** SHARED-INITIALIZE now initializes the values of the requested
2695 slots, including those with :ALLOCATION :CLASS.
2696 ** ALLOCATE-INSTANCE now works on structure classes defined via
2697 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2699 ** SLOT-EXISTS-P now works on conditions, as well as structures
2701 ** MAKE-LOAD-FORM now has the required methods on
2702 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2703 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2704 keyword, and now implements the SLOT-NAMES argument.
2705 ** methods with &OPTIONAL arguments no longer allow too many
2706 arguments to be passed in the call without error.
2707 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2708 option is consistent with the required arguments of the generic
2709 function lambda list.
2710 * bug fix: REQUIRE accepts a string designator. (Thanks to
2712 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2713 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2714 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2715 * bug fix: The compiler now checks for duplicated variables in macro
2717 * bug fix: SETQ on globals returns the correct value.
2718 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2719 not a COMPILER-ERROR (followed by some other strange error on
2720 choosing the CONTINUE restart).
2721 * bug fix: make.sh and friends are now more consistent in the way that
2722 they look for GNU "make".
2724 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2725 * experimental native threads support (on x86 Linux >=2.4 only).
2726 This is not compiled in by default: you need to add :SB-THREAD to
2727 the target features. See the "Beyond ANSI" chapter of the manual
2729 * fix for longstanding nonANSIism: The old distinction between
2730 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2731 The return value from CL:FIND-CLASS is now a CLOS class, and
2732 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2733 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2734 * An interface to the MetaObject Protocol, as described in Kiczales,
2735 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2736 MIT Press, 1991, is available from the SB-MOP package.
2737 * incompatible change: the SB-PCL package should now be considered
2738 a private implementation detail, and no longer a semi-private MOP
2740 * minor incompatible change: due to rearrangement for threads, the
2741 control stack and binding stack are now allocated at arbitrary
2742 addresses instead of being hardcoded per-port. Users affected by
2743 this probably have to be doing advanced things with shared
2744 libraries, and will know who they are.
2745 * minor incompatible change: Previously, all --eval forms used were
2746 processed with READ before any of them were processed with EVAL.
2747 Now each --eval form is processed with both READ and EVAL before
2748 the next --eval form is processed. (Thus package operations like
2749 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2750 work as the user might reasonably expect.)
2751 * minor incompatible change: *STANDARD-INPUT* is now only an
2752 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2754 * minor incompatible change: Y-OR-N-P is now character-oriented,
2755 not line oriented. Also, YES-OR-NO-P now works without errors.
2756 (thanks to Antonio Martinez)
2757 * sb-aclrepl module improvements: an integrated inspector, added
2758 repl features, and a bug fix to :trace command.
2759 * Known functions, which cannot be open coded by the backend, are
2760 considered to be able to check types of their arguments. (fixing
2761 a bug report by Nathan J. Froyd)
2762 * fixed a bug in computing method discriminating functions: It is
2763 now possible to define methods specialized on classes which have
2764 forward-referenced superclasses. (thanks to Gerd Moellmann)
2765 * fixed evaluation order in optional entries (reported by Gilbert
2767 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2768 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2769 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2770 required-by-AMOP NAME argument, as well as CLASS and
2771 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2772 * fixed bug 20: DEFMETHOD can define methods using names that are
2773 not the proper names of classes to designate class specializers.
2774 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2775 Unix file descriptors, instead of blowing up. (thanks to Antonio
2777 * Garbage collection refactoring: user-visible change is that a
2778 call to the GC function during WITHOUT-GCING will not do garbage
2779 collection until the end of the WITHOUT-GCING. If you were doing
2780 this you were probably losing anyway.
2781 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2782 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2783 TYPEP the latter but not the former.
2784 * The compiler issues a full WARNING for calls to undefined functions
2785 with names from the CL package.
2786 * MAP-INTO for a vector destination is open coded. (reported by
2787 Brian Downing on c.l.l)
2788 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2789 documentation string.
2790 * fixed some bugs revealed by Paul Dietz' test suite:
2791 ** COPY-ALIST now signals an error if its argument is a dotted
2793 ** Condition slots are now accessed more correctly in the presence
2794 of multiple initargs for a given slot.
2795 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2796 exclude restarts of the same name associated with a different
2798 ** DEFCLASS of forward-referenced classes with another
2799 forward-referenced class in the superclasses list no longer
2801 ** Condition slots are now initialized once each, not multiple
2802 times. (thanks to Gerd Moellmann)
2803 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2805 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2806 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2807 arguments contain duplicated elements.
2808 ** RESTART-CASE understands local macros.
2809 ** RESTART-CASE associates exactly its own restarts with a condition.
2810 ** ENDP in safe mode checks its argument to be of type LIST.
2811 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2812 in question is unbound.
2813 ** Optimized MAKE-INSTANCE functions no longer cause internal
2814 assertion failures in the presence of duplicate initargs.
2815 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2816 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2817 propagated even in the ctor optimized implementation of
2819 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2821 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2822 * a better implementation of SXHASH on (simple) bit vectors,
2823 measured both in execution speed and in distribution of results
2824 over the positive fixnums, has been installed. Likewise, a better
2825 implementation of EQUAL for simple bit vectors is now available.
2826 * fixed CEILING optimization for a divisor of form 2^k.
2827 * fixed bug 240 (emitting extra style warnings "using the lexical
2828 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2829 by Antonio Martinez)
2830 * fixed SXHASH, giving different results for NIL depending on type
2831 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2832 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2833 variable. (found by Rolf Wester)
2834 * SBCL does not ignore type declarations for special
2835 variables. (reported by rif on c.l.l 2003-03-05)
2836 * some bug fixes in contrib/sb-aclrepl/
2837 * fixed some bugs revealed by Paul Dietz' test suite:
2838 ** a bug in the CONS type specifier, whereby the CAR and CDR
2839 types got intertwined, has been fixed;
2840 ** the type system is now able to reason about the interaction
2841 between INTEGER and RATIO types more completely;
2842 ** APPEND, [N]REVERSE and NRECONC check that those their
2843 arguments, which must be proper lists, are really so;
2844 ** An array specialized to be unable to hold elements has been
2845 implemented, as required -- yes, really -- by ANSI;
2846 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2847 on malformed property lists;
2849 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2850 * incompatible packaging change: in line with Unix convention,
2851 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2852 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2853 * REQUIRE and PROVIDE are now optionally capable of doing something
2854 useful. See the documentation string for REQUIRE.
2855 * infrastructure for a managed SBCL contrib system: contributed
2856 modules in this release include:
2857 ** the ASDF system definition facility;
2858 ** an interface to the BSD Sockets API;
2859 ** an ACL-like convenience interface to the repl;
2860 (thanks to Kevin Rosenberg)
2861 ** an implementation of ROTATE-BYTE, with efficient implementation
2863 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2864 gives a closer approximation to the right answer than previously.
2865 (thanks to Raymond Toy)
2866 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2867 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2868 optional environment arguments, as required by ANSI.
2869 * fixed bugs in other functions taking environment objects, allowing
2870 calls with an explicit NIL environment argument to be compiled
2872 * fixed bug 228: primary return values from
2873 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2874 COMPILE or FUNCTION.
2875 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2876 :TYPE will no longer signal errors on innocuous objects.
2877 * fixed bug 231b: SETQ is better at respecting type declarations in
2878 the lexical environment.
2879 * fixed a bug in DEFCLASS: classes named by symbols with no or
2880 unprintable packages can now be defined.
2881 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2882 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2883 * fixed compiler failure related to checking types of functions.
2884 (reported by Robert E. Brown)
2885 * the compiler is now much more consistent in its error-checking
2886 treatment of bounding index arguments to sequence functions: in
2887 (SAFETY 3) code, errors will be signalled in almost all cases if
2888 invalid sequence bounding indices are passed to functions defined
2889 by ANSI to operate on sequences.
2890 * fixed a bug in the build procedure: documentation of SBCL-specific
2891 packages is now preserved and available in the final Lisp image.
2892 * lifted FDEFINITION lookup out of loops in the implementation of
2893 many list operations. (thanks to Robert E. Brown)
2894 * fixed a bug in the reader: the #n# reader macro now works for
2895 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2896 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2897 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2898 E. Brown and Tony Martinez respectively)
2899 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2900 SLOT-BOUNDP: in particular, it is now able to optimize them much
2901 better, and is now not vulnerable to having packages renamed.
2902 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2903 always called when a slot is not present in an instance. (thanks
2905 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2906 longer signal an error on unreading a character following EOF on
2907 the previous constituent stream. (thanks to Tony Martinez)
2908 * fixed some bugs revealed by Paul Dietz' test suite:
2909 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2910 not just nonnegative fixnums;
2911 ** the logical bit-array operators such as BIT-AND now accept an
2912 explicit NIL for their "opt-arg" argument (to indicate a
2913 freshly-consed result bit-array);
2914 ** ELT now signals an error on an invalid sequence index in safe
2916 ** the type system is now cleverer about negations of numeric
2917 types, and consequently understands the BIGNUM and RATIO types
2919 ** the type system is now cleverer about the interaction between
2920 INTEGER and RATIO types: while bugs still remain, many more
2921 cases are accurately computed;
2922 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2923 if it is in the last clause;
2924 ** CONSTANTLY now correctly returns a side-effect-free function in
2926 ** DECLARE is no longer treated as a special-operator; in
2927 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2928 * incremented fasl file version number due to the change in the
2929 DEFSTRUCT-SLOT-DESCRIPTION structure.
2931 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2932 * minor incompatible change: code processed by the "interpreter" or
2933 EVAL now has a compilation optimization policy of (DEBUG 2)
2934 (changed from (DEBUG 1)) to improve debuggability of interactive
2935 development, and to allow the use of the debug RETURN command in
2937 * an experimental implementation of the RETURN command for the
2938 debugger has been included. (thanks to Frederik Kuivinen)
2939 * fixed bug 62: constraints were not propagated into a loop.
2940 * fixed bug in embedded calls of SORT (reported and investigated by
2942 * fixed some bugs revealed by Paul Dietz' test suite:
2943 ** printing and reading of arrays with some dimensions having
2944 length 0 (thanks to Gerd Moellmann);
2945 ** BOA constructor with &AUX argument without a default value does
2946 not cause a type error;
2947 ** CONSTANTP now returns true for all self-evaluating objects.
2949 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2950 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2951 accessors that are related by inheritance, as specified in the
2952 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2953 Valtteri Vuorikoski)
2954 * The compiler is now able to inline functions that were defined in
2955 a complex lexical environment (e.g. inside a MACROLET).
2956 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2958 * Support for the upcoming FreeBSD-5.0 release has been included.
2959 (thanks to Dag-Erling Smorgrav)
2960 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2961 effect when it is not in a toplevel context.
2962 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2963 stand a better chance of being correct. (thanks to Gerd
2965 * fixed bug in COERCE, which now signals an error on coercing a
2966 rational to a bounded real type which excludes the expected
2968 * The compiler is now able to derive types more accurately from the
2969 COERCE and COMPILE functions.
2970 * fixed bug 223: functional binding is considered to be constant
2971 only for symbols in the CL package.
2972 * fixed bug 231: SETQ did not check the type of a variable being set
2973 (reported by Robert E. Brown)
2974 * A new optimization for MAKE-INSTANCE has been included, fixing
2975 various bugs (including relating to :ALLOCATION :CLASS slots and
2976 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2978 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2979 ** As required by ANSI, LOOP now disallows anonymous collection
2980 clauses such as COLLECT I in conjunction with aggregate boolean
2981 clauses such as THEREIS (= I 1);
2982 ** LOOP now signals an error when any variable is reused in the
2983 same loop (including the potentially useful construct analogous
2984 to WITH A = 1 WITH A = (1+ A);
2985 ** IT is only a special loop symbol within the first clause of a
2986 conditional loop clause;
2987 ** LOOP with a typed iteration variable over a hashtable now
2988 signals a type error iff it should.
2989 * fixed some other bugs revealed by Paul Dietz' test suite:
2990 ** FILE-STREAM now names the class previously known as FD-STREAM;
2991 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2992 argument) no longer signals an error;
2993 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2994 of the slot symbol, rather than using the current package
2995 ((:CONC-NAME "") continues to intern the slot's name in the
2997 * incremented fasl file version number, because of the incompatible
2998 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2999 of the new implementation of DEFINE-COMPILER-MACRO.
3001 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3002 * Support for building SBCL for MIPS platforms running in
3003 little-endian mode has now been checked in, and basic
3004 functionality on said platforms verified.
3005 * minor incompatible change: PCL now records the pathname of a file
3006 in which methods and the like are defined, rather than its
3008 * minor incompatible change: TRUENAME now considers the truename of
3009 a file naming a directory to be the pathname with :DIRECTORY
3010 component indicating that directory.
3011 * minor incompatible change: a NAMED clause in the extended form of
3012 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3013 reason for the previous behaviour is unclear.
3014 * more systematization and improvement of CLOS and MOP conformance
3015 in PCL (thanks to Gerd Moellman and Pierre Mai):
3016 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3018 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3019 primary methods with no specializers;
3020 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3022 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3023 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3024 FORWARD-REFERENCED-CLASSes; error reporting on
3025 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3027 ** SXHASH on CLOS instances now uses a slot internal to the
3028 instance to return different numbers on distinct instances,
3029 while preserving the same return value through invocations of
3031 ** DEFMETHOD signals errors when methods with longer incongruent
3032 lambda lists are added to generic functions;
3033 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3034 CLASS, as specified in AMOP;
3035 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3036 on the order returned by the primary method for classes of
3037 class STANDARD-CLASS;
3038 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3039 * fixed some bugs shown by Paul Dietz' test suite:
3040 ** DOLIST puts its body in TAGBODY;
3041 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3043 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3044 value producing form;
3045 ** if more variables are given to PROGV than values, extra
3046 variables are bound and made to have no value;
3047 ** NSUBSTITUTE on list arguments gets the right answer with
3049 ** ELT signals an error of type TYPE-ERROR when the index argument
3050 is not a valid sequence index;
3051 ** LOOP signals (at macroexpansion time) an error of type
3052 PROGRAM-ERROR when duplicate variable names are found;
3053 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3054 ** FUNCALL of special-operators now cause an error of type
3056 ** PSETQ now works as required in the presence of side-effecting
3057 symbol-macro places;
3058 ** NCONC accepts any object as its last argument;
3059 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3061 ** loop-for-as-package does not require a package to be explicitely
3063 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3065 * fixed bug 166: compiler preserves "there is a way to go"
3066 invariant when deleting code.
3067 * fixed bug 172: macro lambda lists with required arguments after
3068 &REST arguments now cause an error to be signalled. (thanks to
3070 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3071 bug. (thanks to Matthew Danish)
3072 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3074 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3075 arguments are lexically rebound. (thanks to Gerd Moellmann and
3077 * fixed bug 194: error messages are now more informative when there
3078 is no primary method applicable in a call to a generic
3079 function. (thanks to Gerd Moellmann)
3080 * fixed bug in command line argument checking (thanks to Julian
3082 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3083 (thanks to Matthew Danish)
3084 * incremented fasl file version number, because of the
3085 SXHASH-related changes in the layout of CLOS data structures
3087 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3088 * minor incompatible change: The runtime (the Unix executable named
3089 "sbcl") is now much pickier about the .core files it will load.
3090 Essentially it now requires .core files to descend from the same
3091 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3092 as the runtime does. (The intent is to prevent the crashes which
3093 can occur, and which can even be reported as mysterious failures,
3094 when people patch the sources or change the build parameters
3095 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3096 sbcl and .core files.)
3097 * fixed bug: VALUES-LIST is no longer optimized away.
3098 * fixed bug 142: The FFI conversion of C string values to Lisp
3099 string values no longer conses excessively. (thanks to Nathan
3100 Froyd porting Raymond Toy's fix to CMU CL)
3101 * began to systematize and improve MOP conformance in PCL (thanks to
3102 Nathan Froyd, Gerd Moellman and Pierre Mai):
3103 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3105 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3106 ** FINALIZE-INHERITANCE is now called on class finalization;
3107 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3108 argument precedence order.
3109 * fixed bug 202: The compiler no longer fails on functions whose
3110 derived types contradict their declared type.
3111 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3112 so it can be non-toplevel.
3113 * The fasl file version number has changed (because of the new
3114 implementation of DEFMACRO).
3115 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3116 safe code, that any length requirement by their type-specifier
3117 argument is valid. The exceptions to this are described in bug
3119 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3120 functions now check the types of their inputs as required by ANSI.
3121 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3122 introduced symbol is DECLAREd to be SPECIAL.
3123 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3124 * fixed bug: :COUNT argument to sequence functions may be negative
3125 * fixed bug: body of DO-SYMBOLS may contain declarations
3126 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3127 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3128 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3129 symbol macro only once
3130 * fixed printing of call frame when argument list is unavailable
3131 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3132 * compiler no longer signals WARNING on unknown keyword
3135 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3136 * A beta-quality port to the mips architecture running Linux,
3137 based on the old CMUCL backend, has been made. It has been tested
3138 on a big-endian kernel, and works sufficiently well to be able to
3139 rebuild itself; it has not been tested in little-endian mode.
3140 * fixed an inconsistency between gencgc.c and purify.c which made
3141 dumping/loading .core files unreliable
3142 * fixed bug 120a: The compiler now deals correctly with IFs where
3143 the consequent is the same as the alternative, instead of
3144 misderiving the return type. (thanks to Alexey Dejneka)
3145 * fixed bug 113: Logical pathnames are now dumpable (the logical
3146 host is resolved at load-time, throwing an error if it is not
3148 * fixed bug 174: FORMAT's error message is slightly clearer when a
3149 non-printing character is used in a format directive.
3150 * fixed several bugs in compiler checking of type declarations, i.e.
3151 violations of the Python "declarations are assertions" principle
3152 (thanks to Alexey Dejneka)
3153 * fixed several bugs in PCL's error checking (thanks to Gerd
3155 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3157 * fixed bug in compilation of functions as first class values
3158 (thanks to Antonio Martinez-Shotton)
3159 * The compiler's handling TYPE-ERRORs which it can prove will
3160 inevitably happen at runtime has been cleaned up and corrected
3161 in several ways. (thanks to Alexey Dejneka)
3162 * improved argument type checking for various basic arithmetic
3163 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3164 lavished on them in the past that they can be compiled in many
3165 ways in different special cases
3166 * fixed bug 181: compiler checks validity of user supplied type
3168 * cleaned up code flushing in optimization: Function calls which
3169 should signal errors for safety purposes (e.g. which ANSI says
3170 should signal errors when their arguments are of incorrect type)
3171 are no longer optimized away.
3172 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3173 * incremented fasl file version number, because changes in the
3174 implementation of sequence functions like COERCE caused
3175 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3176 in old inline expansions) to become undefined. (Actually these
3177 changes were later undone, so we might very well be binary
3178 compatible with 0.7.7 after all, but leaving the version number
3179 incremented seemed like the simplest and most conservative
3182 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3183 * An alpha-quality port to the parisc architecture running Linux,
3184 based on the old CMUCL backend, has been made. This, even more so
3185 than the other backends, should be considered still a work in
3186 progress; known problems include that the Linux kernel in 64-bit
3187 mode does not propagate the correct sigcontext structure to
3188 userspace, and consequently SBCL on a parisc64 kernel will not
3190 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3191 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3192 suppressed.) Also now that the compiler is looking at declarations
3193 in the environment, it checks optimization declarations as well,
3194 and suppresses inlining when (> DEBUG SPEED).
3195 * More fixes have been made to treatment of floating point exception
3196 treatment and other Unix signals. In particular, floating point
3197 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3198 * The detection and handling of control stack exhaustion (infinite
3199 or very deeply nested recursion) has changed. Stack exhaustion
3200 detection is now done by write-protecting pages at the OS level
3201 and applies at all optimization settings; when found, a
3202 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3203 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3204 be caught using IGNORE-ERRORS.
3205 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3206 correctly when transforming recursive LABELS functions to LETs.
3207 (thanks to Alexey Dejneka)
3208 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3209 that are names of constants or global variables.
3210 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3211 alien routines with docstrings.
3212 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3213 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3215 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3216 (thanks to Eric Marsden)
3217 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3218 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3219 * Bug fix: The SPARC backend can now compile functions involving
3220 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3221 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3222 to a functions expecting a PATHNAME-DESIGNATOR.
3223 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3224 lambda lists. (thanks to Alexey Dejneka)
3225 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3226 functions so that EXPORTing the name of the class doesn't cause
3227 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3228 to Antonio Martinez for reporting this)
3229 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3230 constant-folded without failing an assertion. (thanks to Einar
3231 Floystad Dorum for reporting this)
3232 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3233 types are now dealt with more correctly by the compiler.
3234 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3235 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3236 behaviour analogous to RENAME-FILE. This puts its behaviour more
3237 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3239 * The fasl file version number has changed again. (because of the
3240 bug fix involving the names of PCL MAKE-INSTANCE functions)
3242 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3243 * bug fix: Floating point exceptions are treated much more
3244 consistently on the x86/Linux and PPC/Linux platforms.
3245 * Array initialization with :INITIAL-ELEMENT is now much faster for
3246 cases when the compiler cannot open code the array creation, but
3247 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3248 array accesses have also seen a speed increase.
3249 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3250 specified. (This was at the root of some bad interactions between
3251 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3253 * bug fix: Internal error arguments for undefined functions are now
3254 computed correctly on the PPC/Linux platform.
3255 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3256 Raymond Toy's patch for CMU CL)
3257 * Support for the Solaris 9 operating environment has been included
3258 (thanks to Daniel Merritt)
3259 * A very ugly but hopefully complete draft of the missing FFI chapter
3260 of the manual has been created by reformatting the corresponding
3261 CMU CL manual chapter into (currently very ugly and incoherent)
3262 DocBook and bringing it up to date for SBCL behavior. Thus, the
3263 manual is now essentially complete, at least by my extreme
3264 once-and-only-once standards, whereby it's acceptable to refer to
3265 the doc strings of SB-EXT functions as the primary documentation.
3266 * The fasl file version number has changed again, due to cleanup of
3267 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3268 is no longer a static symbol.)
3270 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3271 * SBCL now builds with OpenMCL (version 0.12) as the
3272 cross-compilation host; also, more progress has been made toward
3273 bootstrapping under CLISP.
3274 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3276 * bug 158 fixed: The compiler can now deal with integer loop
3277 increments different from 1; fixing this turned out also to fix
3279 * bug 169 fixed: no more bogus warnings about using lexical bindings
3280 despite the presence of perfectly good SPECIAL declarations (thanks
3281 to David Lichteblau)
3282 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3283 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3284 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3286 * bug 180 fixed: Method combination specifications no longer ignore
3287 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3288 * bug fix: Structure type predicate functions now check their argument
3289 count as they should.
3290 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3291 correctly. (thanks to Pierre Mai)
3292 * minor incompatible change: The --noprogrammer option is deprecated
3293 in favor of the new --disable-debugger option, which is very similar.
3294 (The major difference is that it takes effect at a slightly different
3295 time at startup, causing handling of errors in --sysinit and
3296 --userinit files will be affected differently.) The
3297 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3298 been added to allow this functionality to be controlled from ordinary
3299 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3300 maintainers, who might want to run non-interactive scripts to
3301 build SBCL cores which will later be used interactively.)
3302 * minor incompatible change: The LOAD function no longer, when given
3303 a wild pathname to load, loads all files matching that pathname.
3304 Instead, an error of type FILE-ERROR is signalled.
3306 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3307 * bug 147 fixed: The compiler preserves its block link/count
3308 invariants more correctly now so that it doesn't crash. (thanks
3310 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3312 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3313 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3314 no-value-for-this-character as NIL (as specified by ANSI).
3315 * HOST-NAMESTRING on physical pathnames now returns a string that is
3316 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3317 (thanks to Christophe Rhodes)
3318 * The Alpha port handles icache flushing more correctly. (thanks to
3320 * More progress has been made toward bootstrapping under CLISP. (thanks
3321 to Christophe Rhodes)
3322 * The fasl file format has changed again, because dynamic loading
3323 on OpenBSD (which has non-ELF object files) motivated some cleanups
3324 in the way that foreign symbols are transformed and passed around.
3325 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3326 is no longer treated as whitespace by the reader, but instead as
3327 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
3328 |A
\x7fB|, instead of A as it used to.
3330 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3331 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3332 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3333 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3334 this as of 0.7.1.45, but was left out of the previous news section
3335 (thanks to Dan Barlow)
3336 * SBCL now runs on the Solaris operating system on SPARC architectures
3337 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3338 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3339 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3340 * SPARC backend cleanups, allowing builds of cores optimized for V8
3341 and V9 SPARCS, and also emission of code targeted to a particular
3342 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3344 * SBCL is closer to bootstrapping under CLISP, thanks to various
3345 fixes by Christophe Rhodes.
3346 * The fasl file format has changed again, to allow the compiler's
3347 INFO database to support symbol macros.
3348 * The user manual (in doc/) is formatted into HTML more nicely.
3349 (thanks to coreythomas)
3350 * The system is smarter about SUBTYPEP relationships, especially
3351 those involving NOT types (including types such as ATOM which are
3352 represented internally using NOT types). Thus SUBTYPEP is less
3353 likely to return (VALUES NIL NIL) in general, and in particular
3354 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3356 * The fasl file format has changed again, because the internal
3357 representation of types now includes a new slot to support the new
3358 SUBTYPEP-of-NOT-types logic.
3359 * (not a change in the main branch of SBCL, but a related prototype
3360 which can hopefully be merged into the main branch of SBCL in the
3361 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3362 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3363 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3364 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3365 dispatch macro character combinations. (thanks to Alexey Dejneka)
3366 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3367 that superficially look like logical namestrings correctly.
3368 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3370 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3371 default supplied-p) for &optional and &key arguments. (thanks to
3374 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3375 * incompatible change: The compiler is now less aggressive about
3376 tail call optimization, doing it only when (> SPACE DEBUG) or
3377 (> SPEED DEBUG). (This is an incompatible change because there are
3378 programs which relied on the old CMU-CL-style behavior to optimize
3379 away their unbounded recursion which will now die of stack overflow.)
3380 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3381 for non-GENCGC systems has been increased to 20M (since that
3382 seems much closer to the likely performance optimum for modern
3383 systems than the old 4M value was)
3384 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3385 and *DEBUG-PRINT-LEVEL*
3386 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3387 of CMU CL's support for SPARC, and various endianness and other
3388 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3389 * new syntactic sugar for the Unix command line: --load foo.bar is now
3390 an alternate notation for --eval '(load "foo.bar")'.
3392 ** The system now detects stack overflow and handles it gracefully,
3393 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3394 optimization settings. (This is a good thing in general, and
3395 its introduction in this version should be particularly timely
3396 for anyone whose code fails because of suppression of tail
3398 ** The system now hunts for the C variable "environ" in a more
3399 devious way, to avoid segfaults when the C library version differs
3400 between compile time and run time. (thanks to Christophe Rhodes)
3401 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3402 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3403 ** The compiler no longer issues bogus style warnings for undefined
3404 classes in the same source file as the DEFCLASSes which defined
3405 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3407 ** fixes in CONDITION class precedence list for undefined function
3408 errors (thanks to Alexei Dejneka)
3409 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3410 correctly. (thanks to Dan Barlow)
3411 ** portability fixes aiming at bootstrapping under CLISP (thanks
3412 to Dave McDonald and Christophe Rhodes)
3413 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3414 ** fixes in type translation and and type inference (thanks to
3416 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3417 ** various fixes in the new ports (thanks to Dan Barlow)
3418 * several changes related to debugging:
3419 ** suppression of tail recursion, as noted above
3420 ** stack overflow detection, as noted above
3421 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3422 is now the default. (For some time encapsulation has been more
3423 reliable than the breakpoint-based :ENCAPSULATE NIL
3424 implementation, at least on X86 systems; and I just noticed that
3425 encapsulation also seems closer to the spirit of the ANSI
3428 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3430 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3431 up properly again. (There was a packaging bug in 0.7.0 which
3432 left their definitions in SB-SYS::LOAD-FOREIGN and
3433 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3434 vital for most things which interface to C-level interfaces,
3435 like extensions working with sockets or databases or
3436 Perl-compatible regexes or whatever, and the need to fix
3437 this bug is the main reason that 0.7.1 was released so
3439 ** DEFGENERIC is now choosier about the methods it redefines, so that
3440 reLOADing a previously-LOADed file containing DEFGENERICs does
3441 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3442 cycle now works as it should. (thanks to Alexey Dejneka)
3443 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3444 fixed by Christophe Rhodes. (He actually submitted this patch
3445 months ago, and I delayed until after 0.7.0.)
3446 ** Bug 111 (internal compiler confusion about runtime checks on
3447 FUNCTION types) was fixed by Alexey Dejneka.
3448 * Some internal cleanups (getting rid of variables which aren't
3449 needed now that the byte interpreter is gone) caused the fasl
3450 file format number to change again.
3452 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3453 * major incompatible change: The default fasl file extension, i.e. the
3454 default extension for files produced by COMPILE-FILE, has changed
3455 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3457 ** There are many changes in the implementation of the compiler.
3458 SBCL is now essentially a compiler-only implementation of ANSI
3459 Common Lisp. EVAL still "interprets" a few special cases, but
3460 almost all the interesting cases are handled by creating
3461 a LAMBDA expression, calling COMPILE on it, then calling
3462 FUNCALL on the result.
3463 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3464 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3465 Since the code is newer, there might still be some new bugs
3466 (though not as many as before Martin Atzmueller's fixes:-). But
3467 the new code is substantially simpler and clearer, and hopefully
3468 any remaining bugs will be simpler, less fundamental, and more
3469 fixable then the bugs in the old code.
3470 ** The revised compiler is still a little unsteady on its feet.
3472 *** The debugging information it produces (particularly the names
3473 of FUNCTION objects) is sometimes much less useful than what
3474 the old compiler produced.
3475 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3476 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3477 within a MACROLET) has been temporarily weakened.
3478 ** There are new compiler optimizations for various functions:
3479 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3480 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3481 *** the math functions TRUNCATE, FLOOR, and CEILING
3482 *** the function-of-all-trades COERCE
3483 Mostly these should be transparent, but there's one
3484 potentially-annoying problem (bug 117): when the compiler
3485 inline-expands a function and does type analysis on the result,
3486 it can create control paths which have type mismatches, and
3487 when it can't prove that those control paths aren't taken,
3488 it will issue WARNINGs about the type mismatches. This is
3489 a particular problem in practice for the new sequence functions.
3490 It's not clear how this should be fixed, and for now, a
3491 workaround is given in the entry for 117 in the BUGS file.
3492 ** (Because of the interaction between the two previous items --
3493 occasional inlining problems and new inline expansions -- some
3494 of the new sequence function optimizations won't really kick in
3495 completely until debugging information, and then inlining, are
3496 straightened out in some future version.)
3497 * minor incompatible changes:
3498 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3499 DIRECTORY no longer implicitly promotes NIL slots of its
3500 pathname argument to :WILD. In particular, when you ask for the
3501 contents of a directory (which you used to be able to do without
3502 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3503 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3504 ** changes in behavior that ANSI explicitly defines to be
3505 implementation dependent:
3506 *** The new compiler-only implementation still conforms with ANSI,
3507 but acts a little different than before. Besides the obvious
3508 changes in performance tradeoffs (that the cost per form passed
3509 to EVAL has gone up, and the cost per form executed by EVAL
3510 has gone down), the behavior of the system changes a little
3511 because there are no longer any interpreted function objects.
3512 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3513 e.g. doing COMPILE on the output of interactive DEFUN is
3515 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3517 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3518 has changed from (:CL) to NIL.
3519 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3520 e.g. #\Newline and #\Tab, don't have names specified in the
3521 ANSI Common Lisp standard, is now based on their ASCII symbolic
3522 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3523 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3524 are no longer used for output.
3525 ** changes in internal implementation constants:
3526 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3527 4 million. (If your application spends a lot of time GCing and
3528 you have a lot of RAM, you might want to experiment with
3529 increasing it even more.)
3530 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3531 However, almost all old code should still continue to work without
3532 immediate update, as SB-C-CALL is now a (deprecated) nickname
3534 ** Old operator names in the style DEF-FOO are now deprecated in
3535 favor of new corresponding names DEFINE-FOO, for consistency with
3536 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3537 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3538 internal symbols, but a few supported extensions like
3539 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3540 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3541 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3542 etc. as you get deeper into recursive calls to the debugger
3543 command loop, instead of the old "5]", "5]]", "5]]]"
3544 sequence. (I was motivated to do this when squabbles between
3545 ILISP and SBCL left me very deeply nested in the debugger. In the
3546 short term, this change will probably provoke more ILISP/SBCL
3547 squabbles, but hopefully it will be an improvement in the long run.)
3548 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3549 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3550 function, since declaiming return types involving aliens is
3551 (1) annoyingly messy to do by hand and (2) vital to efficient
3552 compilation of code which calls such functions.
3553 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3554 longer reexported by the SB-EXT package. They're solely useful
3555 for alien code, so it seems more logical that you should get
3556 them from the SB-ALIEN package, not in SB-EXT.
3557 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3558 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3559 features. Instead, the code that they used to control is always
3560 built into the system.
3561 * many other bug fixes
3562 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3563 advantage of the new EVAL-WHEN stuff and to clean them up in
3564 general, and they are now more ANSI-compliant in a number of
3565 ways. Martin Atzmueller is responsible for a lot of this.
3566 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3568 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3569 *** correct ERROR type for various file operations
3570 *** some fixes for Lisp streams
3571 *** DEFMETHOD syntax checking
3572 *** changing old weird representation of debug information as
3573 strings (which, among their other deficiencies, don't transform
3574 correctly when you rename packages, and don't change their
3575 print representation when you change things like *PACKAGE*
3576 and *PRINT-LENGTH*) to symbols and lists of symbols
3577 He also made several improvements and fixed several bugs in DESCRIBE.
3578 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3580 *** misbehavior of WRITE-STRING/WRITE-LINE
3581 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3582 and several other LOOP problems as well
3583 *** DIRECTORY when similar filenames are present
3584 *** DEFGENERIC with :METHOD options
3585 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3586 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3587 *** argument ordering in FIND with :TEST option
3588 *** mishandled package designator argument in APROPOS-LIST
3589 *** various problems in the backquote readmacro
3590 *** a bug in APROPOS
3591 *** probably some others that I'm not describing very well here,
3592 since the CVS log documents them by reference to sbcl-devel
3593 messages, and the SourceForge archives aren't working well.:-(
3594 ** Dan Barlow improved the Alpha port (and is making progress on the
3595 PPC port, for those of you who think different).
3596 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3597 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3598 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3599 continues to work on the SPARC port (for those of you in a position
3600 to look down upon our little PC-compatible boxes from a great height).
3601 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3602 and uses that copy, rather than the current dynamic value, when
3603 it's trying to decide whether to truncate output. Thus e.g.
3604 (let ((*print-lines* 50))
3605 (pprint-logical-block (stream nil)
3607 (let ((*print-lines* 8))
3608 (print (aref possiblybigthings i) stream)))))
3609 should now truncate the logical block only at 50 lines, instead of
3610 often truncating it at 8 lines, as it did before.
3611 * The doc/cmucl/ directory, containing old CMU CL documentation
3612 from the time of the fork, is no longer part of the base system.
3613 SourceForge has shut down its anonymous FTP service, and with it
3614 my original plan for distributing the old CMU CL documentation
3615 there. For now, if you need these files you can download an old
3616 SBCL source release and extract them from it.
3617 * The fasl file version number changed again, for dozens of reasons,
3618 some of which are apparent above.
3620 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3621 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3622 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3623 patch, so that DISASSEMBLE output is much nicer.
3624 * The code in the SB-PROFILE package now seems reasonably stable.
3625 I still haven't decided what the final interface should look like
3626 (I'd like PROFILE to interact cleanly with TRACE, since both
3627 facilities use function encapsulation) but if you have a need
3628 for profiling now, you can probably use it successfully with
3629 the current CMU-CL-style interface.
3630 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3631 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3632 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3633 link now returns the dangling link itself, and for similar
3634 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3635 link itself. (In these cases the old code signalled an error and
3636 looped endlessly, respectively.) Thus, DIRECTORY now works even
3637 in the presence of dangling and cyclic symbolic links.
3638 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3639 is now a supported extension again, since the consensus on
3640 sbcl-devel was that it can be useful for ordinary development
3641 work, not just for debugging SBCL itself.
3642 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3643 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3644 that currently-defined functions might be redefined later with
3645 different return types.
3646 * Hash tables can be printed readably, as inspired by CMU CL code
3647 of Eric Marsden and SBCL code of Martin Atzmueller.
3648 * better error handling in CLOS method combination, thanks to
3649 Martin Atzmueller porting Pierre Mai's CMU CL patches
3650 * more overflow fixes for >16Mbyte I/O buffers
3651 * A bug in READ has been fixed, so that now a single Ctrl-D
3652 character suffices to cause end-of-file on character streams.
3653 In particular, now you only need one Ctrl-D at the command
3654 line (not two) to exit SBCL.
3655 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3657 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3658 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3659 does the right thing.
3660 * The implementation of some type tests, especially for CONDITION
3661 types, is now tidier and maybe faster, due to CMU CL code
3662 originally by Douglas Crosher, ported by Martin Atzmueller.
3663 * Some math functions have been fixed, and there are new
3664 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3665 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3666 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3667 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3668 likely to be built into sbcl-0.7.0.)
3669 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3670 CL, ported to SBCL by Martin Atzmueller)
3671 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3672 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3673 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3674 * There's a new slam.sh hack to shorten the edit/compile/debug
3675 cycle for low-level changes to SBCL itself, and a new
3676 :SB-AFTER-XC-CORE target feature to control the generation of
3677 the after-xc.core file needed by slam.sh.
3678 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3679 COMPILE-FILE is no longer supported, so that now every function
3680 gets an entry point, so that block compilation looks a little
3681 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3682 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3683 returns the number of bytes consed since the system started,
3684 rather than the number consed since the first time the function
3685 was called. (The new definition parallels ANSI functions like
3686 CL:GET-INTERNAL-RUN-TIME.)
3687 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3688 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3689 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3690 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3691 * Fasl file version numbers are now independent of the target CPU,
3692 since historically most system changes which required version
3693 number changes have affected all CPUs equally. Similarly,
3694 the byte fasl file version is now equal to the ordinary
3697 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3698 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3699 is no longer recognized. I apologize for this, because it was
3700 listed in SB-EXT as a supported extension, but I found that
3701 its existing behavior was poorly specified, as well as incorrectly
3702 specified, and it looked like too much of a mess to straighten it
3703 out. I have enough on my hands trying to get ANSI stuff to work..
3704 * many patches ported from CMU CL by Martin Atzmueller, with
3705 half a dozen bug fixes in pretty-printing and the debugger, and
3706 half a dozen others elsewhere
3707 * fixed bug 13: Floating point infinities are now supported again.
3708 They might still be a little bit flaky, but thanks to bug reports
3709 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3710 as flaky as they were.
3711 * The --noprogrammer command line option is now supported. (Its
3712 behavior is slightly different in detail from what the old man
3713 page claimed it would do, but it's still appropriate under the
3714 same circumstances that the man page talks about.)
3715 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3716 are now supported, and enabled by default. Thus, the compiler can
3717 handle many floating point and complex operations much less
3718 inefficiently. (Thus e.g. you can implement a complex FFT
3720 * The compiler now detects type mismatches between DECLAIM FTYPE
3721 and DEFUN better, and implements CHECK-TYPE more correctly, and
3722 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3723 thanks to patches from Martin Atzmueller.
3724 * various fixes to make the cross-compiler more portable to
3725 ANSI-conforming-but-different cross-compilation hosts (notably
3726 Lispworks for Windows, following bug reports from Arthur Lemmens)
3727 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3728 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3729 fixed thanks to Pierre Mai's CMU CL patches.
3730 * fixes to keep the system from overflowing internal counters when
3731 it tries to use i/o buffers larger than 16M bytes
3732 * fixed bug 45a: Various internal functions required to support
3733 complex special functions have been merged from CMU CL sources.
3734 (When I was first setting up SBCL, I misunderstood a compile-time
3735 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3736 * improved support for type intersection and union, fixing bug 12
3737 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3738 more obscure bugs as well
3739 * some steps toward byte-compiling non-performance-critical
3740 parts of the system, courtesy of patches from Martin Atzmueller
3741 * Christophe Rhodes has made some debian packages of sbcl at
3742 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3743 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3744 stable, but are nonetheless usable. When he's ready, I'd be happy
3745 to add them to the SourceForge "File Releases" section. (And if
3746 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3747 * new fasl file format version number (because of changes in
3748 internal representation of (OR ..) types to accommodate the new
3749 support for (AND ..) types, among other things)
3751 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3752 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3754 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3756 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3757 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3758 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3759 * DESCRIBE now works on structure objects again.
3760 * Most function call argument type mismatches are now handled as
3761 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3762 know whether the function will be redefined before the call is
3763 executed. (The compiler could flag local calls with full WARNINGs,
3764 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3765 it doesn't keep track of enough information to know whether calls
3766 are local in this sense.)
3767 * Compiler output is now more verbose, with messages truncated
3768 later than before. (There should be some supported way for users
3769 to override the default verbosity, but I haven't decided how to
3770 provide it yet, so this behavior is still controlled by the internal
3771 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3772 src/compiler/ir1util.lisp.)
3773 * Fasl file format version numbers have increased again, because
3774 support for the Gray streams extension changes the layout of the
3775 system's STREAM objects.
3776 * The Gray subclassable streams extension now works, thanks to a
3777 patch from Martin Atzmueller.
3778 * The full LOAD-FOREIGN extension (not just the primitive
3779 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3780 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3781 but like most other programs, it defaults to copying the Unix
3782 environment from the original process instead of starting the
3783 new process in an empty environment.
3784 * Extensions which manipulate the Unix environment now support
3785 an :ENVIRONMENT keyword option which doesn't smash case or
3786 do other bad things. The CMU-CL-style :ENV option is retained
3787 for porting convenience.
3788 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3789 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3791 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3793 * A patch from Martin Atzmueller seems to have solved the SIGINT
3794 problem, and as far as we know, signal-handling now works cleanly.
3795 (If you find any new bugs, please report them!)
3796 * The system no longer defaults Lisp source file names to types
3797 ".l", ".cl", or ".lsp", but only to ".lisp".
3798 * The compiler no longer uses special default file extensions for
3799 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3800 seems to expect a single default extension for all compiled code,
3801 and there's no compelling reason to try to stretch the standard
3802 to allow two different extensions.) Instead, byte-compiled files
3803 default to the same extension as native-compiled files.
3804 * Fasl file format version numbers have increased again, because
3805 a rearrangement of internal implementation packages made some
3806 dumped symbols in old fasl files unreadable in new cores.
3807 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3808 many fewer weird special cases.
3809 * Bug #17 (differing COMPILE-FILE behavior between logical and
3810 physical pathnames) has been fixed, and some related misbehavior too,
3811 thanks to a patch from Martin Atzmueller.
3812 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3813 by Tim Moore, ported to SBCL by Martin Atzmueller.
3814 * Martin Atzmueller fixed several filesystem-related problems,
3815 including bug #36, in part by porting CMU CL patches, which were
3816 written in part by Paul Werkowski.
3817 * More compiler warnings in src/runtime/ are gone, thanks to
3818 more patches from Martin Atzmueller.
3819 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3822 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3824 * DESCRIBE now works on CONDITION objects.
3825 * The debugger now handles errors which arise when trying to print
3826 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3828 * The build system now uses an additional file, customize-target-features.lisp,
3829 to allow local modifications to the target *FEATURES* list. (The point of
3830 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3831 debugging features enabled, without having to worry about propagating it
3832 into everyone's system when I do a "cvs update".) When no
3833 customize-target-features.lisp file exists, the target *FEATURES* list
3834 should be constructed the same way as before.
3835 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3836 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3837 warn about behavior which is undefined under the ANSI spec. Note: This
3838 is specified by ANSI, but it's not very popular with programmers.
3839 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3840 macro in the SBCL sources for an example of a workaround which you
3841 might use to make portable ANSI-standard code which does what you want.
3842 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3843 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3844 when it's used as a non-toplevel form. (This is required in order
3845 to implement the DEFCONSTANT-EQX macro.)
3846 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3847 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3848 funny things, due to bugs in the implementation of EVAL-WHEN
3849 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3850 non-toplevel DEFCONSTANTs are uncommon.)
3851 * The core file version number and fasl file version number have been
3852 incremented, because the old noncompliant DEFCONSTANT behavior involved
3853 calling functions which no longer exist, and because I also took the
3854 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3855 * fixed bug 1 (error handling before read-eval-print loop starts), and
3856 redid debugger restarts and related debugger commands somewhat while
3858 ** The QUIT debugger command is gone, since it did something
3859 rather different than the SB-EXT:QUIT command, and since it never
3860 worked properly outside the main toplevel read/eval/print loop.
3861 Invoking the new TOPLEVEL restart provides the same functionality.
3862 ** The GO debugger command is also gone, since you can just invoke
3863 the CONTINUE restart directly instead.
3864 ** The TOP debugger command is also gone, since it's redundant with the
3865 FRAME 0 command, and since it interfered with abbreviations for the
3867 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3869 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3870 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3871 some porting work by Martin Atzmueller)
3872 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3873 with a boatload of patches which he ported to SBCL. Now that those
3875 ** The system tries to make sure that its low-priority messages
3876 are prefixed by semicolons, to help people who like to use
3877 syntax highlighting in their ILISP buffer. (This patch
3878 was originally due to Raymond Toy.)
3879 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3880 patches originally written by Raymond Toy.
3881 ** The compiler understands coercion between single-value and
3882 multiple-VALUES type expressions better, getting rid of some very
3883 weird behavior, thanks to patches originally by Robert MacLachlan
3884 and Douglas Crosher.
3885 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3886 lambda lists, thanks to a patch originally by Pierre Mai.
3887 ** The system no longer bogusly warns about "abbreviated type
3889 ** The compiler gets less confused by inlining and RETURN-FROM,
3890 thanks to some patches originally by Tim Moore.
3891 ** The system no longer hangs when dumping circular lists to fasl
3892 files, thanks to a patch originally from Douglas Crosher.
3893 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3894 undefined function error.
3895 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3896 in structure slot initforms) for now, documented workaround instead:-|
3897 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3898 * fixed bug 5: added stubs for various Gray stream functions called
3899 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3900 installed, at least appropriate type errors are generated
3901 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3902 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3903 consistently in DEFMETHOD forms.
3904 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3905 it doesn't seem to affect SBCL after all
3906 * The C runtime system now builds with better optimization and many
3907 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3909 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3911 * The system is now under CVS at SourceForge (instead of the
3912 CVS repository on my home machine).
3913 * The new signal handling code has been tweaked to treat register
3914 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3915 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3916 downstream, e.g. in debug-int.lisp, has implicit dependencies
3917 on the unsignedness of integer representation of machine words,
3918 and that caused the system to bomb out with infinite regress
3919 when trying to recover from type errors involving signed values,
3920 e.g. (BUTLAST '(1 2 3) -1).)
3921 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3922 (This was one of the bugs Peter Van Eynde reported back in July.)
3923 * The system now uses code inspired by Colin Walters' O(N)
3924 implementation of MAP (from the cmucl-imp@cons.org mailing
3925 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3926 inline the MAP operation, and there is more than one
3927 sequence argument to the MAP call (so that it can't just
3928 do ETYPECASE once and for all based on the type of the
3929 single sequence argument). (The old non-inline implementation
3930 of the general M-argument sequence-of-length-N case required
3931 O(M*N*N) time when any of the sequence arguments were LISTs.)
3932 * The QUIT :UNIX-CODE keyword argument has been renamed to
3933 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3934 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3936 * Raymond Wiker's patches to port dynamic loading from Linux to
3937 FreeBSD have been added.
3938 * The BUGS file is now more nearly up to date, thanks in large part
3939 to Martin Atzmueller's review of it.
3940 * The debugger now flushes standard output streams before it begins
3941 its output ("debugger invoked" and so forth).
3942 * The core version number and fasl file version number have both
3943 been incremented, because of incompatible changes in the layout
3945 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3946 used to not be called for a saved Lisp image.)
3947 * Martin Atzmueller's version of a patch to fix a compiler crash,
3948 as posted on sbcl-devel 13 September 2000, has been installed.
3949 * Instead of installing Martin Atzmueller's patch for the
3950 compiler transform for SUBSEQ, I deleted the compiler transform,
3951 and transforms for some similar consing operations.
3952 * A bug in signal handling which kept TRACE from working on OpenBSD
3954 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3955 away by constant folding
3956 * The system now defines its address space constants in one place
3957 (in the Lisp sources), and propagates them automatically elsewhere
3958 (through GENESIS and the sbcl.h file). Therefore, patching the
3959 address map is less unnecessarily tedious and error-prone. The
3960 Lisp names of address space constants have also been systematized.
3961 * CVS tags like dollar-Header-dollar have been removed from
3962 the sources, because they have never saved me trouble and
3963 they've been source of trouble working with patches and other
3964 diff-related operations.
3965 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3966 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3968 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3970 * The system has been ported to OpenBSD.
3971 * The system now compiles with a simple "sh make.sh" on the systems
3972 that it's supported on. I.e., now you no longer need to tweak
3973 text in the target-features.lisp-expr and symlinks in src/runtime/
3974 by hand, the make.sh takes care of it for you.
3975 * The system is no longer so grossly inefficient when compiling code
3976 involving vectors implemented as general (not simple) vectors (VECTOR T),
3977 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3978 which dares to use the various sequence functions on non-simple
3979 vectors, takes less of a performance hit.
3980 * There is now a primitive type predicate VECTOR-T-P
3981 to test for the (VECTOR T) type, so that e.g.
3982 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3983 can now be compiled with some semblance of efficiency. (The old code
3984 turned the type declaration into a full call to %TYPEP at runtime!)
3985 * AREF on (VECTOR T) is still not fast, since it's still compiled
3986 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3987 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3988 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3989 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3990 without making full calls to SUBTYPEP at runtime.
3991 (Some analogous efficiency issues for non-simple vectors specialized to
3992 element types other than T, or for non-simple multidimensional arrays,
3993 have not been addressed. They could almost certainly be handled the
3994 same way if anyone is motivated to do so.)
3995 * The changes in array handling break binary compatibility, so
3996 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3997 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3998 instead of (VALUES T T).
3999 * By following the instructions that Dan Barlow posted to sbcl-devel
4000 on 2 July 2000, I was able to enable primitive dynamic object
4001 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4002 functionality is not implemented (since it calls ld to resolve
4003 library references automatically, requiring RUN-PROGRAM for its
4004 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4005 try to resolve library references) is now supported.
4006 * The system now flushes the standard output streams when it terminates,
4007 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4008 them at several other probably-convenient times, e.g. in each pass of
4009 the toplevel read-eval-print loop, and after evaluating a form given
4010 as an "--eval" command-line option. (These changes were motivated by a
4011 discussion of stream flushing issues on cmucl-imp in August 2000.)
4012 * The source transform for TYPEP of array types no longer assumes
4013 that an array whose element type is a not-yet-defined type
4014 is implemented as an array of T, but instead punts, so that the
4015 type will be interpreted at runtime.
4016 * There is now some support for cross-compiling in make.sh: each of
4017 the phases of make.sh has its own script. (This should be transparent
4018 to people doing ordinary, non-cross-compile builds.)
4019 * Since my laptop doesn't have hundreds of megabytes of memory like
4020 my desktop machine, I became more motivated to do some items on
4021 my to-do list in order to reduce the size of the system a little:
4022 ** Arrange for various needed-only-at-cold-init things to be
4023 uninterned after cold init. To support this, those things have
4024 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4025 symbols with such names are now uninterned after cold init).
4026 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4027 fasl files for cold load.
4028 ** Remove the old compiler structure pooling code (which used to
4029 be conditional on the target feature :SB-ALLOC) completely.
4030 ** Redo the representation of some data in cold init to be more compact.
4031 (I also looked into supporting byte compiled code at bootstrap time,
4032 which would probably reduce the size of the system a lot, but that
4033 looked too complicated, so I punted for now.)
4034 * The maximum signal nesting depth in the src/runtime/ support code has
4035 been reduced from 4096 to 256. (I don't know any reason for the very
4036 large old value. If the new smaller value turns out to break something,
4037 I'll probably just bump it back up.)
4038 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4040 * Many, many bugs reported by Peter Van Eynde have been added to
4041 the BUGS list; some have even been fixed.
4042 * While enabling dynamic object file loading, I tried to make the
4043 code easier to understand, renaming various functions and variables
4044 with less ambiguous names, and changing some function calling
4045 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4046 * While trying to figure out how to do the OpenBSD port, I tried to
4047 clean up some of the code in src/runtime/. In particular, I dropped
4048 support for non-POSIX signal handling, added various comments,
4049 tweaked the code to reduce the number of compilation warnings, and
4050 renamed some files to increase consistency.
4051 * To support the new automatic configuration functionality in make.sh,
4052 the source file target-features.lisp-expr has been replaced with the
4053 source file base-target-features.lisp-expr and the machine-generated
4054 file local-target-features.lisp-expr.
4055 * fixed a stupid quoting error in make.sh so that using CMU CL
4056 "lisp -batch" as cross-compilation host works again
4058 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4060 * DESCRIBE no longer tries to call itself recursively to describe
4061 bound/fbound values, so that it no longer fails on symbols which are
4062 bound to themselves (like keywords, T, and NIL).
4063 * DESCRIBE now works on generic functions.
4064 * The printer now prints less-screwed-up representations of closures
4065 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4066 * A private symbol is used instead of the :EMPTY keyword previously
4067 used to mark empty slots in hash tables. Thus
4068 (DEFVAR *HT* (MAKE-HASH-TABLE))
4069 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4070 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4071 now does what ANSI says that it should. (You can still get
4072 similar noncompliant behavior if bang on the hash table
4073 implementation with all the symbols you get back from
4074 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4075 This breaks binary compatibility, since tests for equality to
4076 :EMPTY are wired into things like the macroexpansion of
4077 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4079 * There's now a minimal placeholder implementation for CL:STEP,
4080 as required by ANSI.
4081 * An obscure bug in the interaction of the normal compiler, the byte
4082 compiler, inlining, and structure predicates has been patched
4083 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4084 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4086 * Missing ordinary arguments in a macro call are now detected even
4087 when the macro lambda list contains &KEY or &REST.
4088 * The debugger no longer complains about encountering the top of the
4089 stack when you type "FRAME 0" to explicitly instruct it to go to
4090 the top of the stack. And it now prints the frame you request even
4091 if it's the current frame (instead of saying "You are here.").
4092 * As specified by ANSI, the system now always prints keywords
4093 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4095 * The default initial SIZE of HASH-TABLEs is now smaller.
4096 * Type information from CLOS class dispatch is now propagated
4097 into DEFMETHOD bodies, so that e.g.
4098 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4100 is now basically equivalent to
4101 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4102 (DECLARE (TYPE SINGLE-FLOAT X))
4104 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4105 operation, without having to do run-time type dispatch.
4106 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4107 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4108 * Since I don't seem to be making big file reorganizations very often
4109 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4110 is overflowing my ability to conveniently back them up), I've finally
4111 checked the system into CVS. (The CVS repository is on my home system,
4112 not at SourceForge -- putting it on SourceForge might come later.)
4113 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4114 high-level GC-NOTIFY-FOO functions send their output. (There's
4115 still very little control of where low-level verbose GC functions
4116 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4117 less than it used to -- the GC-NOTIFY-FOO functions are now under
4118 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4119 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4120 in only one place in the source code, and propagates it automatically
4121 everywhere that it's needed. Thus e.g. when I bump the version from
4122 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4123 * The C source files now include boilerplate legalese and documentation
4124 at the head of each file (just as the Lisp source files already did).
4125 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4126 to his page will be replaced with a link to his new CLiki service.
4128 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4130 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4131 * The build process now looks for GNU make under the default name "gmake",
4132 instead of "make" as it used to. If GNU make is not available as "gmake"
4133 on your system, you can change this default behavior by setting the
4134 GNUMAKE environment variable.
4135 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4136 can build without error under CMU CL.
4138 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4140 * There is now a partial SBCL user manual (with some new text and some
4141 text cribbed from the CMU CL manual).
4142 * The beginnings of a profiler have been added (starting with the
4143 CMU CL profiler and simplifying and cleaning up). Eventually the
4144 main interface should be through the TRACE macro, but for now,
4145 it's still accessed through vaguely CMU-CL-style functions and macros
4146 exported from the package SB-PROFILE.
4147 * Some problems left over from porting CMU CL to the new
4148 cross-compilation bootstrap process have been cleaned up:
4149 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4150 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4151 part when getting rid of the compiler *BACKEND* stuff.)
4152 ** The value of *NULL-TYPE* was screwed up, because it was
4153 being initialized before the type system knew the final
4154 definition of the 'NULL type. This screwed up several key
4155 optimizations in the compiler, causing inefficiency in all sorts
4156 of places. (I found it because I wanted to understand why
4157 GET-INTERNAL-RUN-TIME was consing.)
4158 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4159 PROCLAIM FTYPE information. Unfortunately this broke binary
4160 compatibility again, since now the forms output by DEFGENERIC
4161 to refer to functions which didn't exist in 0.6.3.
4162 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4163 can use the new (as of 0.6.3) transform for SOME into MAP into
4165 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4166 values to (INTEGER 0 1000000), so that the time code will no longer
4167 occasionally get blown up by Linux returning 1000000 microseconds
4168 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4169 its output conform to the ANSI spec. (Alas, this makes its output
4170 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4171 * A full call to MAP NIL with a single sequence argument no longer conses.
4172 * fixes to problems pointed out by Martin Atzmueller:
4173 * The manual page no longer talks about multiprocessing as though
4174 it were currently supported.
4175 * The ILISP support patches have been removed from the distribution,
4176 because as of version 5.10.1, ILISP now supports SBCL without us
4177 having to maintain patches.
4178 * added a modified version of Raymond Toy's recent CMU CL patch for
4179 EQUALP comparison of HASH-TABLE
4181 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4183 * The system still can't cross-compile itself with
4184 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4185 entails), but at least it can compile more of itself that way
4186 than it used to be able to, and various buglets which were uncovered
4187 by trying to cross-compile itself that way have now been fixed.
4188 * This release breaks binary compatibility again. This time
4189 at least I've incremented the FASL file format version to 2, so that the
4190 problem can be detected reliably instead of just causing weird errors.
4191 * various new style warnings:
4192 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4193 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4194 ** using the lexical binding of a variable named in the *FOO* style
4195 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4196 as specified by ANSI.
4197 * *RANDOM-STATE* is no longer automatically initialized from
4198 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4199 default behavior of the system is to repeat its behavior every time
4200 it's run. If you'd like to change this behavior, you can always
4201 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4202 old convention there was no comparably easy way to get the system to
4203 repeat its behavior every time it was run.
4204 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4205 FTYPE declarations has been removed, in favor of their ANSI
4206 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4207 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4208 the types of their sequence arguments can be determined at compile time.
4209 This is done through a new open code expansion for MAP which eliminates
4210 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4211 argument types can be determined at compile time.
4212 * The optimizer now transforms COERCE into an identity operation when it
4213 can prove that the coerced object is already of the correct type. (This
4214 can be a win for machine generated code, including the output of other
4215 optimization transforms, such as the MAP transform above.)
4216 * Credit information has been moved from source file headers into CREDITS.
4217 * Source file headers have been made more standard.
4218 * The CASE macro now compiles without complaining even when it has
4221 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4223 * (Note that the way that the PCL macroexpansions were rewritten
4224 to accommodate the change in DEFGENERIC below breaks binary
4225 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4226 not run under sbcl-0.6.2. Once we get out of alpha releases,
4227 i.e. hit release 1.0.0, we'll probably try to maintain binary
4228 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4229 and sbcl-1.4.4. Until then, however, it might be fairly common
4230 for maintenance releases to break binary compatibility.)
4231 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4233 * The reporting of unhandled signals has been changed to print some
4234 explanatory text as well as the report form. (Previously only
4235 the report form was printed.)
4236 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4237 it defines, so that the compiler no longer issues undefined function
4238 warnings for compiled-but-not-yet-loaded generic functions.
4239 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4240 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4241 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4242 section of the ANSI spec are supported.
4243 * The "" nickname for the "KEYWORD" package has been removed.
4244 The reader still handles symbol tokens which begin with a package marker
4245 as keywords, but it doesn't expose its mechanism for doing so in the
4246 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4247 * The system now issues STYLE-WARNINGs for contradictory TYPE
4248 proclamations. (Warnings for contradictory FTYPE proclamations would
4249 be nice too, but those can't be done usefully unless the type system
4250 is made smarter about FUNCTION types.)
4251 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4252 systematized, so that "*target-*.lisp is supposed to exist only on the
4253 target and imply that there's a related file which exists on the
4254 host, and *host-*.lisp is supposed to exist only on the host and imply
4255 that there's a related file which exists on the target. This involves a
4256 lot of renaming. Hopefully the acute confusion caused by the renaming
4257 will be justified by the reduction in chronic confusion..
4258 ** runtime-type.lisp -> early-target-type.lisp
4259 ** target-type.lisp -> late-target-type.lisp
4260 ** early-host-format.lisp -> early-format.lisp
4261 ** late-host-format.lisp -> late-format.lisp
4262 ** host-error.lisp -> misc-error.lisp
4263 ** early-error.lisp -> early-target-error.lisp
4264 ** late-error.lisp -> late-target-error.lisp
4265 ** host-defboot.lisp -> early-defboot.lisp
4266 ** code/misc.lisp -> code/target-misc.lisp
4267 ** code/host-misc.lisp -> code/misc.lisp
4268 ** code/numbers.lisp -> code/target-numbers.lisp
4269 ** code/early-numbers.lisp -> numbers.lisp
4270 ** early-host-type.lisp -> early-type.lisp
4271 ** late-host-type.lisp -> late-type.lisp
4272 ** host-typep.lisp -> typep.lisp
4273 ** load.lisp -> target-load.lisp
4274 ** host-load.lisp -> load.lisp
4275 ** host-disassem.lisp -> disassem.lisp
4276 ** host-insts.lisp -> insts.lisp
4277 ** byte-comp.lisp -> target-byte-comp.lisp
4278 ** host-byte-comp.lisp -> byte-comp.lisp
4279 ** host-signal.lisp -> signal.lisp
4280 ** host-defstruct.lisp -> defstruct.lisp
4281 ** late-target-type.lisp -> deftypes-for-target.lisp
4282 Furthermore, several other previously target-only files foo.lisp (e.g.
4283 hash-table.lisp and random.lisp) have been split into a target-and-host
4284 foo.lisp file and a target-only target-foo.lisp file, with their key type
4285 definitions in the target-and-host part, so that the cross-compiler will
4286 know more about target types.
4287 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4288 gone away. In their place are various *BACKEND-FOO* variables
4289 corresponding to the slots of the old structure.
4290 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4291 into the target SBCL has been fixed.
4292 * The chill.lisp system for loading cold code into a running SBCL
4294 * Support for the CMU CL "scavenger hook" extension has been removed.
4295 (It was undocumented and unused in the CMU CL sources that SBCL was
4296 derived from, and stale in sbcl-0.6.1.)
4297 * Various errors in the cross-compiler type system were detected
4298 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4299 (enabling various consistency checks). Many of them were fixed,
4300 but some hard problems remain, so the compiler is back to
4301 running without *TYPE-SYSTEM-INITIALIZED* for now.
4302 * As part of the cross-compiler type system cleanup, I implemented
4303 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4304 * I have started adding UNCROSS calls throughout the type system
4305 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4306 on cross-compiler input files will be able to go away, and various
4308 * CONSTANTP now returns true for quoted forms (as explicitly required
4311 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4313 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4314 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4315 (MAKE-LIST -1). In the longer term, it ought to become true
4316 that declarations are assertions even at SAFETY 1. For now, it's not
4317 quite true even at SAFETY 3, but it's at least more nearly true..
4318 (Note that this change seems to increases the size of the system by
4319 O(5%) and to decrease the speed of the compiler by 20% or more.)
4320 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4321 for the problem of printing dozens of lines of distracting information
4322 about low-level system machinery as part of the top stack frame
4323 on entry to the debugger when an undefined function was called.
4324 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4325 is not reset to COMMON-LISP-USER.
4326 * Compilation of stuff related to dyncount.lisp has been made conditional
4327 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4328 smaller. The various dyncount-related symbols have been moved into
4329 a new "SB-DYNCOUNT" package.
4330 * tty-inspect.lisp has been renamed to inspect.lisp.
4331 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4332 feature has gone away. (When we eventually port to other flavors of
4333 libc and/or Unix, we'll try to make the differences between flavors
4334 invisible at the user level.)
4335 * Various other *FEATURES* tags, and/or their associated conditionals,
4336 have been removed if obsolescent, or given better documentation, or
4337 sometimes given more-mnemonic names.
4339 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4341 * tidied up "make.sh" script
4342 * tidied up system directory structure
4343 * better "clean.sh" behavior
4344 * added doc/FOR-CMUCL-DEVELOPERS
4345 * many many small tweaks to output format, e.g. removing possibly-confusing
4346 trailing #\. character in DESCRIBE-INSTANCE
4347 * (EQUALP #\A 'A) no longer signals an error.
4348 * new hashing code, including EQUALP hashing
4349 * tidied up Lisp initialization and toplevel
4350 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4351 * command line argument processing
4352 * added POSIX-GETENV function to deal with Unix-ish environment variables
4353 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4354 terminating SBCL on EOF
4355 * non-verbose GC by default
4356 * There is no more "sbcl" shell script; the sbcl file is now the C
4357 runtime executable (just like CMU CL).
4358 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4360 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4361 symbol and package information as Lisp native symbol and package objects
4362 instead of strings naming symbols and strings naming packages. This way,
4363 whenever packages are renamed (as in warm init), debug information is
4364 transformed along with everything else.
4365 * tweaked the optimization policy declarations which control the building
4366 of SBCL itself. Now, among other things, the system no longer saves
4367 source location debugging information. (This helps two problems at once
4368 by reducing SBCL size and by keeping SBCL from trying to look for its
4369 sources -- which may not exist -- when reporting errors.)
4370 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4371 debugging and testing purposes
4372 * cleaned up printing, making the printer call PRINT-OBJECT for
4373 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4374 methods, giving nearly-ANSI behavior
4375 * converted almost all special variables to use *FOO* naming convention
4376 * deleted PARSE-TIME functionality, since it can be done portably
4377 * moved some files out of cold init into warm init
4378 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4380 * regularized formatting of source files
4381 * added an install.sh script
4382 * fixed ridiculous memory usage of cross-compiler by making
4383 compiler/alloc.lisp not try to do pooling unless it can hook
4384 itself into the GC of the cross-compilation host. Now the system
4385 builds nicely on my old laptop.
4386 * added :SB-ALLOC in target-features.lisp-expr
4387 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4388 was not implemented)
4389 * re-did condition handling and note reporting in the compiler. Notes
4390 are no longer handled by signalling conditions. Style warnings
4391 and warnings are handled more correctly and reported in such a way
4392 that it's easy to find one or the other in your output (so that you
4393 can e.g. figure out which of many problems caused COMPILE-FILE to
4395 * changed the severity of several compiler warnings from full WARNING
4396 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4397 compiler note reporting so that it doesn't use the condition system
4398 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4399 COMPILE-FILE command)
4400 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4401 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4402 no longer supported, since their implementation was deeply intertwingled
4403 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4404 * removed bogus "support" for compiler macros named (SETF FOO), and
4405 removed the compiler macro for SETF INFO (but only after making a fool
4406 of myself on the cmucl-imp mailing list by posting a bogus patch for
4407 DEFINE-COMPILER-MACRO..)
4408 * Compiled files containing forms which have side effects on the Lisp
4409 reader (such as DEFPACKAGE forms) are now handled more correctly.
4410 (Compiler queuing of top level lambdas has been suppressed by setting
4411 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4412 * deleted various currently-unused source files, e.g. gengc.lisp. They
4413 may be added back at some point e.g. when porting to other architectures,
4414 but until they are it's distracting to distribute them and to try to
4416 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4417 there were so many of them they're just distractions, and UNCROSS is
4418 known to be able to handle the current sources
4419 * moved PROFILE functionality into TRACE, so that it will be clear
4420 how the wrapping and unwrapping of functions when you profile them
4421 interacts with the wrapping and unwrapping of functions when you
4422 trace them. (Actually, the functionality isn't there yet, but at least
4423 the interface specification is there. Hopefully, the functionality will
4424 arrive with some future maintenance release.)
4425 * removed host-oops.lisp
4426 * changed signature of QUIT function to allow UNIX-CODE argument
4427 * fixed READ-SEQUENCE bug
4428 * tweaked verbose GC output so that it looks more like the progress
4429 output that ANSI specifies for functions like LOAD
4430 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4431 * added <http://sbcl.sourceforge.com> to the banner information printed by