1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.3.20:
3 * optimization: optimized external-format routines.
5 changes in sbcl-1.3.20 relative to sbcl-1.3.19:
6 * minor incompatible change: DEF{GENERIC,METHOD} no longer accept some
7 illegal lambda lists such as (defgeneric bar (foo &key foo)) or
8 (defgeneric baz (t)) that were accepted before.
9 * optimization: a valueless &AUX binding in a BOA constructor does not
10 force all slots reads in safe code to perform a full type check.
11 * optimization: ATOMIC-PUSH and ATOMIC-POP generate better code
12 * bug fix: the low-level debugger would erroneously print - or not print
13 as the case may be - "(bad-address)" for some objects depending whether
14 the --dynamic-space-size argument was used at Lisp startup
15 * bug fix: a DEFCONSTANT with a non non-eql-comparable object as the value
16 could cause miscompilation if that constant appeared as the default
17 expression for an &OPTIONAL binding
18 * bug fix: generic function lambda lists are now checked for repeated
19 and otherwise illegal entries. (lp#1704114)
20 * bug fix: setting gencgc_verbose = 1 could cause deadlock in fprintf()
21 depending on the platform's stdio implementation. The relevant code
22 has been changed to use snprintf() and write() instead.
24 changes in sbcl-1.3.19 relative to sbcl-1.3.18:
25 * enhancement: specialized arrays can be printed readably without using
27 * enhancement: SB-DEBUG:PRINT-BACKTRACE truncates huge string arguments.
28 The full string remains available for inspection via (SB-DEBUG:ARG).
29 * bug fix: backtracing from several threads at once could fail
30 * bug fix: floating-point infinities could not be used as keys
31 in EQUALP hash tables. (lp#1696274)
32 * bug fix: random sb-fasteval failures. (lp#1642708)
33 * bug fix: align the stack in callback wrappers to defend against C
34 compiler over-aggressive use of SIMD. (lp#1697528)
35 * bug fix: don't try to find the class when reporting that a class does
36 not exist for a primitive type. (lp#1697226)
38 changes in sbcl-1.3.18 relative to sbcl-1.3.17:
39 * minor incompatible change: existing values of CFLAGS, ASFLAGS,
40 CPPFLAGS, and LINKFLAGS will be incorporated into C compiler
41 invocations when building from source.
42 * minor incompatible change: the result of WRITE-TO-STRING may be
43 a BASE-STRING if all characters written are of type BASE-CHAR.
44 * minor incompatible change: the broadcast stream with no output
45 streams is a singleton object. That object satisfies OPEN-STREAM-P
46 regardless of how many times CLOSE is invoked on it.
47 * enhancement: x86[-64] backends contain an experimental feature
48 which aids in demonstrating reachability of any object starting
49 from a tenured object or a thread stack by producing a proof
50 as a sequence of pointers to follow.
51 The file "tests/traceroot.test.sh" contains an example usage.
52 * enhancement: if the alien symbol "gc_coalesce_string_literals" is
53 set to 1 prior to SAVE-LISP-AND-DIE, then similar string constants
54 loaded from different fasl files may be collapsed to one object.
55 If the variable is set to 2, then additionally strings which are
56 STRING= in code resulting from COMPILE can be coalesced.
57 For instance, two functions returning the literal string "HI"
58 might return EQ strings after collapsing, which may be undesired
59 in a particular use. The flag pertains to gencgc only.
60 * enhancement: SXHASH values on pathnames are better distributed
61 * bug fix: MAKE-PATHNAME removes empty strings as components of a
62 directory, as is permitted: "Whenever a pathname is constructed
63 the components may be canonicalized if appropriate."
64 * optimization: various printer and FORMAT performance enhancements.
65 * bug fix: GET-FOREGROUND no longer fails in case all other interactive
66 threads exit (lp#1682671, reported by Syll)
67 * bug fix: RELEASE-FOREGROUND always removes the current thread from the
68 list of interactive threads. (lp#1682867, reported by Syll)
70 changes in sbcl-1.3.17 relative to sbcl-1.3.16:
71 * enhancement: memory overhead from the garbage collector's metadata
72 is reduced on 64-bit architectures; no change for 32-bit.
73 * enhancement: further garbage collector speedups affecting
74 pinned objects on conservative backends, and simple-vectors.
75 * enhancement: on Linux a custom handler for SIGSEGV can be called
76 for page faults outside of dynamic space by changing the C symbol
77 "sbcl_fallback_sigsegv_handler".
78 * bug fix: sb-cover does not lose source positions for AND/OR/COND.
79 * bug fix: random disassembler failures. (lp#1527931)
80 * The bundled sb-md5 contrib has been updated to release 2.0.4
81 which is licensed under Creative Commons CC0 per author's statement
82 https://github.com/pmai/md5/commit/fd134e71b71a10ab78905833a7cb9d4d6817c589
83 (Refer to NEWS and COPYING in the contrib/sb-md5 subdirectory)
85 changes in sbcl-1.3.16 relative to sbcl-1.3.15:
86 * optimization: various small tweaks give around 5% faster garbage
88 * bug fix: better detection of when an impossible code path does
89 not need a warning. (lp#1668619)
90 * bug fix: stronger attempts to disable position-independent
91 executable building. (lp#1668986, patch from Mark Wright)
92 * bug fix: OPEN :IF-EXISTS NIL signalled a condition on Windows.
93 (lp#1674437, reported by Jan Idzikowski)
95 changes in sbcl-1.3.15 relative to sbcl-1.3.14:
96 * minor incompatible change: the reader will when feasible create
97 new symbols using a BASE-STRING for the print name. Additionally,
98 string literals can favor the base-string type if desired, though
99 the default is to always return UTF-32 strings for compatibility.
100 A preference for base-string does not disable reading Unicode.
101 The choice is controlled via (SETF READTABLE-BASE-CHAR-PREFERENCE).
102 If Unicode was disabled at build time, this setting does nothing.
103 * enhancement: SBCL generates more debug information by default.
104 * enhancement: type errors provide context information, such as which
105 variable is being bound, which slot of which structure is being set.
106 * enhancement: if #+immobile-symbols is in build-time *FEATURES* (not
107 enabled by default), then symbols will never be moved in memory
108 except by SAVE-LISP-AND-DIE. Immobility has helpful implications for
109 code generation as well as interaction with foreign routines.
110 This feature can only be enabled if #+immobile-space is enabled.
111 * enhancement: undefined function errors can be restarted on x86-64, to
112 either retry calling the function again or call a user supplied function.
113 * enhancement: sb-ext:restrict-compiler-policy accepts an upper bound in
114 addition to a lower bound.
115 * enhancement: #+immobile-code improves the speed of function calling.
116 Some delay may be noticed when redefining an existing function
117 from a saved core file however.
118 * defaults change: sb-ext:*disassemble-annotate* default to NIL, due to its
120 * new feature: SB-LINKABLE-RUNTIME, allowing linking with extra object
121 files to help with delivery of executables. (Thanks to François-René
123 * bug fix: data race in GENTEMP fixed - it can no longer return the
124 same interned symbol to multiple threads if called concurrently
125 * bug fix: interrupting LOADing of FASLs does not leave functions without
126 source locations. (lp#540276)
127 * bug fix: DYNAMIC-EXTENT-declared results of NOTINLINE local functions were
128 treated as if they were actually stack allocated (lp#1659964)
129 * bug fix: correctly handle the case of a non-local exit within a function
130 terminating the extent of dynamic-extent, dynamic-bound variables in the
131 presence of multiple-values (lp#1655011)
132 * bug fix: handling of SB-SYS:WITH-PINNED-OBJECTS in the interpreters (both
133 sb-eval and sb-fasteval) now actually pins objects on gencgc.
134 * bug fix: AVX registers are preserved during exceptions on x86-64 macOS.
135 * bug fix: (directory "SOMETHING/*/**/MORE") is no longer equivalent to
136 (directory "SOMETHING/**/MORE")
137 * bug fix: better console IO on Windows (lp#1660906)
139 changes in sbcl-1.3.14 relative to sbcl-1.3.13:
140 * minor incompatible change: the SB-PCL walker no longer recognizes
141 macros expanding into a DECLARE expression. This is not a language change,
142 since ANSI forbids such usage (X3J13 issue DECLARE-MACROS:FLUSH).
143 * enhancement: for several macros such as MULTIPLE-VALUE-{BIND,SETQ}, COND,
144 DO{,*,LIST}, {RESTART,HANDLER}-{BIND,CASE}, *CASE, conditions signaled
145 during macroexpansion point to the form that caused the problem more
147 * enhancement: the "--noinform" command-line option inhibits output from
148 save-lisp-and-die in addition to removing the startup banner.
149 * bug fix: PROCESS-KILL failed to return errno if the system call failed
150 * optimization: slightly more comprehensive treatment of the keyword
151 arguments to MAKE-ARRAY in compiler transformations.
153 changes in sbcl-1.3.13 relative to sbcl-1.3.12:
154 * enhancement: SET triggers package locks on undefined variables.
156 * enhancement: new Windows specific option to run-program, :escape-arguments
158 * enhancement: recompiling a MAKE-INSTANCE form with an initarg :INITARG
159 CONSTANT where CONSTANT names a constant variable picks up the new value
160 of CONSTANT in case it has been redefined. (lp#1644944)
161 * optimization: faster TYPEP on undefined at compile-time types and upcoming
162 class definitions. (lp#1082967)
163 * optimization: memory consumption of each STANDARD-OBJECT instance is
164 reduced by 2 words if the compact-instance-header feature is enabled.
165 * optimization: CONDITION instances are quicker to allocate.
166 * optimization: unoptimized calls to FILL on specialized vectors are now
167 just as fast as T vectors.
168 * bug fix: get-timezone returns corret DST on 64-bit Windows. (lp#1641058)
169 * bug fix: cross reference information in fasls is no longer incompatible
170 between different cores (lp#1648186)
172 changes in sbcl-1.3.12 relative to sbcl-1.3.11:
173 * enhancement: on x86-64, compiled functions loaded from fasl files
174 can not be moved, but can be freed, by GC. Additionally, COMPILE will
175 produce immobile code if SB-C::*COMPILE-TO-MEMORY-SPACE* is set to
176 :IMMOBILE. (Caution: the flag is experimental and subject to change.)
177 The benefits are better physical separation of code from data,
178 and potentially easier examination of live images by external tools.
179 * enhancement: the docstring for SAVE-LISP-AND-DIE has been amended to
180 say that the :ROOT-STRUCTURES parameter is not meaningless on gencgc,
181 depending on the platform.
182 * bug fix: calling a named function (e.g. a DEFUN) concurrently with
183 redefining that same function could lead to execution of random bytes.
184 * bug fix: yes-or-no-p accepts formatter functions (lp#1639490)
185 * bug fix: better handling of exceptions on macOS.
187 changes in sbcl-1.3.11 relative to sbcl-1.3.10:
188 * minor incompatible change: SB-EXT:*INTEXP-MAXIMUM-EXPONENT* is removed.
189 * enhancement: TRACE ... :REPORT {TRACE,NIL} now work as advertised in the
190 documentation string (based on patch by Patrick Stein)
191 * enhancement: support unboxed signed-word structure slots on x86, x86-64
192 and ARM64. (lp#377616)
193 * optimization: faster logical bit-array operations on multidimensional
195 * optimization: better GC performance in the presence of many threads.
196 (patch by Ilya Perminov, lp#1339924)
197 * optimization: multiple-value-call is optimized with multiple argument
198 forms, not just one. (lp#753803)
199 * bug fix: MAKE-ALIEN-STRING returns the number of allocated bytes as a
200 second value as advertised (reported by Johann 'Myrkraverk' Oskarsson)
201 * bug fix: when TO-READTABLE is supplied to COPY-READTABLE, it will
202 contain only the macros in FROM-READTABLE and no others. (lp#1631506)
203 * enhancement: gencgc has been modified for x86-64 on Linux and macOS
204 to a support mark-and-sweep as well as the traditional copying strategy.
205 It is conceivable that some applications might be adversely affected.
206 Please see ':immobile-space' in 'base-target-features.lisp-expr'
207 for further details, and possible reasons to disable this feature.
208 * enhancement: x86-64 supports shrinking the fixed overhead in a structure
209 from 2 words to 1 word, reducing memory consumption in applications
210 which create many small structures.
212 changes in sbcl-1.3.10 relative to sbcl-1.3.9:
213 * enhancement: more compact low-level error signaling code
214 * enhancement: more compact encoding of cross-reference information
215 * optimization: faster out of line fixnum-float comparisons.
216 * optimization: filling a known simple-vector with a constant value
217 is about as fast in unoptimized code as in code compiled with (SPEED 3),
218 and the x86-64 implementation is able to use SSE instructions.
219 * bug fix: correctly handle the case of a non-local exit within a function
220 terminating the extent of dynamic-extent functions and variables in the
221 presence of multiple-values (lp#1563127)
222 * bug fix: restore builds on the latest OSX with the latest Xcode
225 changes in sbcl-1.3.9 relative to sbcl-1.3.8:
226 * minor incompatible change: NAMESTRING prefers to return a BASE-STRING
227 instead of (ARRAY CHARACTER (*)) when possible.
228 * enhancement: cached make-instance/allocate-instance constructors can now
229 get garbage collected.
230 * optimization: better performance for some unoptimized operations on
232 * bug fix: using the options :LOCAL-NICKNAMES and :LOCK in the same
233 DEFPACKAGE form no longer signals a bogus error
235 changes in sbcl-1.3.8 relative to sbcl-1.3.7:
236 * minor incompatible change: the system now understands that the CONDITION
237 type is disjoint with many other system types.
238 * minor incompatible change: argument types in condition report functions
239 are now declared (in combination with the above change, this can result in
240 early detection of erroneous code).
241 * enhancement: simple arrays of any rank can be stack-allocated
242 on platforms supporting stack allocation of vectors.
243 * optimization: improved type derivation for FIND, POSITION, COUNT, SEARCH,
244 MISMATCH and other array and sequence functions.
245 * optimization: ALLOCATE-INSTANCE is now as fast as MAKE-INSTANCE.
246 * optimization: more efficient CHANGE-CLASS.
247 * bug fix: versions of getresuid() and getresgid() in SB-POSIX no longer
248 cause memory faults, and should work properly (lp#1603806, reported by
250 * bug fix: handle ENOENT from getprotobyname() (lp#1596043, reported by
253 changes in sbcl-1.3.7 relative to sbcl-1.3.6:
254 * bug fix: preserve the name of the destructive function for the destroyed
255 constant and important result warnings, even when declared NOTINLINE.
256 * optimization: faster operations on list-sets.
257 * optimization: better type derivation of set functions.
259 * optimization: load-time TLS-INDEX assignment, and other
260 microoptimizations, on x86.
266 ** REMOVE, REMOVE-DUPLICATES, DELETE and DELETE-DUPLICATES on lists.
268 changes in sbcl-1.3.6 relative to sbcl-1.3.5:
269 * bug fix: do not insert conditional newlines in print-unreadable-object
270 (lp#1398290). This reverses a change made in lp#488979 which reversed
271 a fix advertised in release 0.8.14 to pass the GCL ANSI Test Suite.
272 * bug fix: constant negative rotations of 32-bit quantities are compiled
273 correctly on x86-64 and arm. (lp#1586614, reported by Guillaume Le
276 changes in sbcl-1.3.5 relative to sbcl-1.3.4:
277 * enhancement: the platform's strtod() is exposed as SB-POSIX:STRTOD
278 * enhancement: speed up debug info creation for highly nested functions.
280 * enhancement: the interleaved structure slot optimization from
281 release 1.2.6 has been ported to all architectures.
282 * enhancement: support run-program I/O redirection into lisp streams on
284 * bug fix: better wording in missed optimization note. (lp#1003265)
285 * bug fix: interpreted (CAS SVREF) was broken
286 * bug fix: support CLISP as build host for ARM (lp#1568256, thanks to Tomas
289 changes in sbcl-1.3.4 relative to sbcl-1.3.3:
290 * enhancement: who-sets and who-references work on DEFGLOBAL. (lp#1552997)
291 * enhancement: CONSTANTP understands backquote.
292 e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
293 * optimization: improvements to sequence functions: CONCATENATE, SUBSTITUTE,
295 * bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
296 * bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
297 is less likely to cause confusion in the compiler.
298 * bug fix: DOCUMENTATION works as intended for classes with non-standard
300 * bug fix: (TYPEP <extended-sequence> <extended-sequence-class>) no longer
301 returns NIL in certain situations
302 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class objects as
304 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand DEFTYPEs in
307 changes in sbcl-1.3.3 relative to sbcl-1.3.2:
308 * enhancement: warn about argument mismatch for functions passed as
309 arguments to other functions (e.g. REDUCE, MAP) at compile-time.
310 * optimization: functions accepting other functions (e.g. REDUCE, FIND) can
311 now be constant-folded if all function arguments are declared as foldable.
312 * optimization: improved logical operations on integers of unknown type.
313 * bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
315 changes in sbcl-1.3.2 relative to sbcl-1.3.1:
316 * enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
317 of short sequences and stream types
318 * enhancement: MAKE-LIST's result can be stack-allocated on x86-64
319 * bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
321 * bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
322 arguments and small bit positions. (lp#1277690)
323 * bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
324 * bug fix: DEFUN of a function name that collides with a system-generated
325 structure accessor does not confuse the runtime. (lp#540063)
326 * bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
328 changes in sbcl-1.3.1 relative to sbcl-1.3.0:
329 * enhancement: SB-THREAD support for ARM64.
330 * enhancement: compiling an out-of-line DEFSTRUCT constructor call
331 will warn if a defaulted value is incompatible with its slot type.
332 * enhancement: a local INLINE declaration on a structure constructor
333 will work as intended, subject to any other factors that inhibit
334 inlining, even if the DEFSTRUCT was not itself within a global
335 INLINE proclamation for the named constructor
336 * enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
337 * enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots
339 * enhancement: the interleaved structure slot optimization from
340 release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
341 * enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt
342 is made to join the current thread
343 * bug fix: NTH-VALUE does not cause stack overflow. (lp#1511419)
344 * bug fix: structure constructor type checking is better. (lp#1508735)
345 * bug fix: supplied-p variables for unused optional or keyword variables no
346 longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
347 backtrace machinery) (lp#1498644)
348 * bug fix: Backtrace correctly handles undefined-function frames on MIPS.
349 * bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS
350 (fixes issues with floating-point type derivation in the compiler).
351 * bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS
353 * bug fix: MIPS context register access now masks to 32 bits (fixing issues
354 parsing negative-fixnum values for internal-error arguments and escaped
355 debug variables on 64-bit CPUs).
356 * bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS
358 * bug fix: Callback parameter (argument) handling on MIPS is now vastly
360 * bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
363 changes in sbcl-1.3.0 relative to sbcl-1.2.16:
364 * minor incompatible change: the environment passed to a macro/setf/deftype
365 expander is not always an object of type SB-KERNEL:LEXENV.
366 It can be nil, as is permissible by the standard.
367 * enhancement: ported to ARM64 Linux.
368 * enhancement: a new interpreter is included which has many benefits
369 over sb-eval. It is disabled by default. See src/interpreter/README
370 for instructions to enable it, and further details.
371 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
372 would fail to perform "normal semantic processing such as macro expansion"
373 as stipulated by X3J13 issue LOAD-TIME-EVAL.
374 * bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the empty
375 string as confusable. (lp#1504739)
376 * bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
377 if COMPUTE-IT was a local macro that shadowed a global function.
378 * bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
379 on platforms that use only the minimum specified set of fields in struct
380 termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
381 very probably others). (partial fix for lp#1500951)
383 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
384 * enhancement: by default, timers with a repeat interval do not "catch up"
385 by repeatedly calling their function after a clock discontinuity such as a
386 suspend and resume cycle
387 * bug fix: correctly restore multiple values on the stack in the presence of
388 alien calls. (lp#1489590)
389 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
390 is a subtype of CHARACTER.
391 * bug fix: an EQL method specializer no longer causes garbage retention
392 if there are no extant methods using the specializer. (lp#492851)
394 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
395 * new feature: DEPRECATION declaration for functions, variables and types
396 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
397 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
398 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
399 section of the manual.
400 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
401 * enhancement: definitions within PROGN get proper source locations when
402 compiled (needs latest Slime to take advantage of this). (lp#1473147)
403 * enhancement: source locations for DEFCLASS slots now point directly to the
404 slot definitions, not the whole DEFCLASS form.
405 * bug fix: better source location in the presence of quoted forms.
407 * bug fix: better source locations inside backqoute. (lp#1361502)
408 * bug fix: HANDLER-BIND requires that the handler-function be
409 a function designator at the time of binding establishment. (lp#1480679)
410 * bug fix: inlined functions surrounded by nested macrolets are properly
413 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
414 * minor incompatible change: The name of a compiled anonymous lambda
415 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
416 a lambda-list-like list following the introductory LAMBDA that is not
417 in general a syntactically valid lambda list. Specifically, it won't
418 retain default values, supplied-p variables, or &KEY or &AUX bindings.
419 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
420 scratch to address a handful of performance and correctness issues.
421 Some minor behavioral differences exist regarding order of evaluation
422 of default forms for unsupplied &OPTIONAL and &KEY arguments
423 when nested destructuring patterns are involved.
424 (lp#707556, lp#707573, lp#707578, lp#708051)
425 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
427 * enhancement: sb-unicode:normalize-string has a new optional argument,
428 FILTER, a callback which controls which decomposed characters are
429 collected. Useful for stripping away diacritics more efficiently.
430 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
431 after a call of ADJUST-ARRAY. (lp#1333731)
432 * bug fix: Dynamic-extent allocation with a loop between allocating a value
433 and the start of its environment no longer discards the allocated data
434 when the loop is taken. (lp#1472785)
435 * bug fix: Variable-reference elimination no longer generates incorrect code
436 under certain circumstances. (lp#1446891)
437 * bug fix: variables with EQL types are no longer treated as constants by
438 VOPs, which caused problems with closures being allocated for such
439 variables, but they remained unused. (lp#1390149)
440 * bug fix: Windows installer generates registry key name
441 correctly. (lp#1476447)
443 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
444 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
446 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
447 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
449 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
450 printed. (lp#1437947)
451 * bug-fix: TRUENAME works properly on broken symlinks presented as
452 directories. (lp#1400003)
453 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
454 order of argument evaluation. (lp#1458190)
455 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
456 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
457 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
458 situations incorrectly return the result of a SLOT-MISSING method
459 instead of always returning the new value. (lp#1460381)
460 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
461 its lexical environment (thus being a closure) caused expressions
462 involving the macro name to cause corruption in the pretty-printer
463 due to faulty introspection of the lambda list of a closure.
464 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
465 function are of the matching sequence type. (lp#1459581)
466 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
468 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
469 * minor incompatible change: the SB-C::*POLICY* variable is no longer
470 a list. Code which manipulated it as such (including but not limited
471 to non-bundled releases of ASDF) will need to be revised.
472 * enhancement: The input stream for COMPILE-FILE implements
474 * enhancement: EVAL errors that occur by way of LOAD report the starting
475 line and column number of the erring toplevel form. (lp#565247)
476 * optimization: better MAP and MAP-INTO on known vector result types.
477 * bug fix: Read/modify/write macros accessing a place which is a
478 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
479 do not access subforms more than once. (lp#1450968)
480 * bug fix: short form of DEFSETF no longer allows trailing junk.
481 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
482 regarding argument evaluation order. (lp#1452539)
483 * bug fix: POP works as specified in CLHS if the setter for its
484 argument has a side-effect on the existing CAR value. (lp#1454021)
485 * bug fix: Reading "#()" with a positive numeric argument signals a
486 reader error. As specified, reading "#1()" has undefined consequences,
487 so correct portable code should be indifferent to this. (lp#1252100)
488 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
489 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
491 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
492 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
493 which any part is unrecognizable as a legal type-specifier.
494 The dispatch table will be altered, but the new entry is disabled.
495 Subsequent type-defining forms will cause pprint-dispatch tables to
496 re-examine whether any disabled entries should be enabled. (lp#1429520)
497 * enhancement: Loading code containing calls to a deprecated function will,
498 under most circumstances, signal warnings similar to compiling such code.
499 The usual caveat holds about not detecting calls through a computed name,
500 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
501 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
502 to a constant (VALUES integer integer) indicating the source line/column
503 from which it was read, intended for logging Lisp runtime errors in
504 a style similar to that afforded by the C preprocessor __LINE__ macro.
505 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
506 * enhancement: improved source locations for VOPs, alien types and
508 * bug fix: functions in :FINAL deprecation have the correct docstring.
509 No visible change, as no such functions presently exist. (lp#1439151)
510 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
511 if OTHER names either a macro or special-operator. (lp#1439921)
513 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
514 * minor incompatible change: all SOCKINT::WIN32-* functions have been
515 deprecated with EARLY deprecation state
516 * minor incompatible change: performing introspection via the system-internal
517 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
518 a function, as it always was before. (Affects swank-fancy-inspector)
519 * enhancement: The value of SXHASH on bit-vectors of length equal to the
520 word size now depends on the vector's contents instead of being constant;
521 its value on bit-vectors of length divisible by the word size now depends
522 also on the contents of the vector's last word.
523 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
525 * bug fix: A new dead code elimination phase removes dead code loops
526 that confuse stack analysis. (lp#1255782, lp#308914)
527 * bug fix: A toplevel form which was simple enough to bypass the main
528 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
529 would produce an invalid fasl file. (lp#1427050)
530 * bug fix: The compiler no longer signals an internal error when
531 encountering invalid FUNCTION forms like (function 1)
532 * bug fix: express proper dependencies in the ASDF contrib, to support
533 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
536 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
537 * minor incompatible change and bug fix: unboxed numeric constants
538 on x86oids are arranged in memory differently, and the disassembler
539 does not show them separately in DISASSEMBLE, but does
540 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
541 * optimization: The compiler's treatment of type specifiers makes
542 it slightly faster and more memory-efficient. Portable code
543 should be indifferent to this change, however, users of
544 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
545 and (MEMBER NIL T) are both internally collapsed to the former,
546 so that the latter can never be obtained as part of an FTYPE.
547 * optimization: a TYPEP call in which the second argument is not a
548 QUOTE form but nevertheless recognized as a compile-time constant
549 might open-code the test. One scenario for this involves backquote,
550 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
551 deferring until runtime should declare (NOTINLINE TYPEP).
552 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
553 code requiring delayed evaluation could be unportable though.]
554 * enhancement: unused variables at the top-level are now reported.
556 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
558 * bug fix: compiler no longer signals an error when compiling certain
559 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
560 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
561 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
562 lp#1412881, lp#945261, lp#1419205, lp#1409402)
563 * bug fix: files larger than 4GB can now be compiled.
564 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
565 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
566 * bug fix: callbacks from foreign threads can work without enabling
568 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
570 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
571 * bug fix: compiler no longer fails to dump a multidimensional array
572 constant involving a circular reference to itself
573 * bug fix: conditional and nested DX allocation no longer confuse the
574 compiler in STACK analysis. (lp#1044465)
575 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
577 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
578 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
579 * enhancement: backtrace for invalid argument count produces the exact
580 supplied arguments including the extra ones, on x86, x86-64 and ARM.
581 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
582 are used before the structure is defined; similarly for the predicate.
583 * optimization: FORMAT NIL with only ~a and string arguments is transformed
585 * optimization: POSITION and FIND when inlined into code that is compiled
586 with qualities of safety < 2 and speed > space will no longer signal
587 an error on circular lists, but will potentially loop forever if given
588 no :END constraint. As was always the case, calls that are not inlined
589 are safe regardless of lexical policy.
590 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
591 no longer cause debugger failure when printing a backtrace
592 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
593 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
594 did not work, and now it does.
596 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
597 * optimization: returning constant values refers to preboxed constants
598 more reliably. (lp#1398785)
599 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
600 for a function after at least one ordinary (not inlined) call to that
601 function was compiled, indicating a likely compilation order problem.
602 Likewise a warning ensues if a call is compiled to a function
603 that is subsequently proclaimed INLINE.
604 * enhancement: always lose() when something goes wrong while saving a core
605 (instead of just printing an error on stderr in some situations).
606 * enhancement: frames in the debugger are now restartable by default.
607 * bug fix: restore error handling on Windows x86.
608 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
609 at compile-time when possible. (lp#330299)
610 * bug fix: parsing of malformed type specifiers no longer results
611 in a memory-fault-error.
612 * bug fix: LOOP properly destructures nested lists in WITH.
613 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
614 longer signals the wrong error.
615 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
617 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
618 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
619 select() if the OS has the former. Previously poll() was used
620 only if waiting on exactly one file descriptor.
621 * enhancement: efficiency of access to untagged structure slots is improved
622 on x86-64, and the order of slots in memory is exactly as specified by
623 defstruct, simplifying use of structures as arguments to foreign calls.
624 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
626 * bug fix: GC memory corruption during internal memory handling.
627 * bug fix: duplicate effective-slot-definition objects as compared
628 by EQ on name could be present in CLASS-SLOTS of a class whose
629 metaclass was structure-class or condition-class. (lp#1049423)
630 * bug fix: HANDLER-BIND with empty bindings works again; regression in
632 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
634 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
635 (member #\a #\c). (lp#1392068)
636 * bug fix: READ sometimes accidentally preserved a whitespace character
637 after a token when it should not have. (lp#327790)
639 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
640 * enhancement: sb-bsd-sockets now has basic support for IPv6
641 * enhancement: An sb-unicode package has been added, containing
642 many functions related to handling Unicode text
643 * enhancement: The reader now normalizes symbols to Normalization
644 Form KC (NFKC). This behavior can be disabled with
645 SB-EXT:READTABLE-NORMALIZATION
646 * enhancement: a style-warning is signaled if OPTIMIZE declarations
647 multiply specify a quality with differing values. (lp#310267)
648 * bug fix: conservatively pointed to pages wipe out unused dwords so
649 that they cannot act as false roots in turn.
650 * bug fix: the walker's handling of lexical variable and symbol-macro
651 bindings is improved (lp#375326, lp#1368305)
652 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
653 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
654 * bug fix: in interpreted code, inequality predicates did not type-check
655 arguments that weren't examined, and a 1-argument use of MIN or MAX
656 accepted a complex number. (lp#1373702)
657 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
658 (lp#1364413, thanks to Zach Beane)
660 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
661 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
662 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
663 SEQUENCE:MERGE respectively when the specified result type designates an
665 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
667 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
668 universal superclass (lp#1332983)
669 * bug fix: reading an uninterned symbol whose print name has the
670 syntax of an integer signals an error. (lp#310062)
671 * bug fix: the walker is less likely to be confused when walking LET* forms
672 with special bindings and use of those bindings and others of the same
674 * bug fix: a rare bug affecting 32-bit platforms resulting in a
675 fatal condition with the message "Globaldb rehash failure" has been fixed.
677 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
678 * enhancement: DOCUMENTATION works on instances of
679 FUNCALLABLE-STANDARD-CLASS
680 * enhancement: ASSERT reports arguments of calls to lexical functions in
681 additional to global functions.
682 * enhancement: ASDF updated to 3.1.3
683 * enhancement: UIOP can be loaded without ASDF.
684 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
685 before accessing its class-precedence list.
686 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
688 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
689 class is a FORWARD-REFERENCED-CLASS.
690 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
691 which initargs have been supplied.
692 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
694 * bug fix: macroexpanding a backquoted expression involving ",."
695 outside of the compiler failed. (lp#1354623)
697 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
698 * incompatible change: the #\` ("backquote") reader macro was reimplemented
699 to support robust pretty-printing. Reading a form involving #\` produces
700 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
701 that are not lists. Code that unportably attempts operations on
702 un-evaluated forms resulting therefrom, e.g.
703 (SUBST a b (read-from-string "`(x (,y))"))
704 might generate incorrect results and/or errors.
705 * enhancement: support for GNU/kFreeBSD x86.
706 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
707 and DEFGLOBAL variables of type fixnum.
708 * enhancement: arithmetic constant reduction is now performed on defconstant
709 constants too. (lp#1337069).
710 * bug fix: certain ftype proclamations containing &optional t &rest t no
711 longer cause subsequent definitions to signal bogus style-warnings.
712 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
713 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
716 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
717 * enhancement: GENCGC is enabled on ARM.
718 * enhancement: better error reporting for invalid calls to local functions.
719 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
721 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
723 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
725 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
727 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
728 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
729 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
731 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
732 lp#700538, lp#613876, lp#695286, lp#798388)
733 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
734 * bug fix: array type intersection handles T and unknown element types
735 correctly. (lp#1258716)
736 * bug fix: fix a corner case in array type unparsing that would result in
737 misleading translations from our internal type representation.
738 * bug fix: array-rank now sees through union and intersection types.
740 * bug fix: when DECLARE expressions are in the wrong place, be careful not
741 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
743 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
744 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
745 instead of signaling an error. (lp#1095483)
746 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
747 used to (rarely) introduce duplicate conflict markers in a single
748 TN/block pair. (lp#1327008)
750 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
751 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
752 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
753 report of the signaled conditions lists currently running threads.
754 * enhancement: ported to ARM linux.
755 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
756 * enhancement: new contrib sb-mpfr by Stephan Frank.
757 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
758 (lp#1315846, thanks to Mark Cox)
759 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
760 function-designator to a function only as needed. (lp#1012335)
761 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
762 thanks to Thomas Hlavaty)
763 * bug fix: handle --without-xxx options to make.sh more carefully.
764 (lp#1246665, thanks to Richard M Kreuter)
765 * bug fix: prevent maybe-delete-exit from doing semantically broken things
766 with local exits. (lp#309099, lp#518099, lp#533930)
767 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
770 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
771 * optimization: COERCE is now more effecient for more cases when the type is
772 known at compile-time.
774 * bug fix: correctly inherit condition initforms. (lp#1300904)
775 * bug fix: properly pprint literal functions inside nested lists.
777 * bug fix: more-correctly handle array-type unity (broken for ages, causing
778 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
779 reported by jasom in #lisp).
781 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
782 * enhancement: printing backtraces respects
783 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
785 * optimization: defstruct out-of-line accessor are now as fast as inlined.
787 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
788 instances with a test-function (reported by Vivitron in #sbcl)
789 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
790 * bug fix: Change COND error message (lp#1254511)
791 * bug fix: LOAD is no longer confused when called on a directory.
793 * bug fix: MAKE-CONDITION reports names of missing condition classes
794 properly (lp#1199223)
795 * bug fix: restore building with clang. (lp#1293643)
796 * bug fix: restore building on SPARC (broken since 1.1.15).
797 * bug fix: improved FreeBSD support.
798 * bug fix: PPC floating point conversion corrupted stack.
800 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
801 * minor incompatible change: improve read/print consistency for pathnames on
802 Win32, by using the circumflex character #\^ as the escape character.
804 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
805 * enhancement: Loading fasls with symbols from an undefined package includes
806 the name of the symbol in the error message.
807 * bug fix: problems when redefining classes and doing TYPEP on classes
808 concurrently. (lp#1272742)
809 * bug fixes to the x86-64 XCHG instruction:
810 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
812 ** it was misencoded when used to exchange EAX with itself.
813 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
814 32- and 16-bit variations as NOP.
815 * bug fix: the disassembler outputs source annotations in the right place
816 and no longer randomly drops some of them. (lp#1249205)
817 * bug fix: fix commutative-arg-swap from introducing undumpable structures
818 into code, prevent code with errors from being compiled. (lp#1276282)
819 * bug fix: pathnames with :back in their directory component are succeffully
821 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
822 wrap functions around. (lp#309086)
824 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
825 * new feature: the iterative spilling/coloring register allocator developed
826 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
827 in. By default, it only activates for functions that optimize with
828 (speed 3) and (> speed compilation-speed), but setting
829 sb-regalloc:*register-allocation-method* to :iterative forces its
830 execution. The previous behaviour can be obtained by instead setting that
831 variable to :greedy. Thanks again to Google for their support, and, more
832 crucially, to Alexandra Barchunova for her hard work.
833 * optimization: make-array with known element-type and unknown dimensions is
835 * optimization: make-array with unknown element-type is faster as well.
837 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
838 :application-type argument, which can be :console or :gui. :gui allows
839 having GUI applications without an automatically appearing console window.
840 * enhancement: reduced conservativism on GENCGC platforms:
841 conservative roots must be valid-looking tagged pointers or point
842 within a code object, not merely point to within the allocated part
843 of a page, in order to pin a page.
844 * enhancement: support for "Mac Roman" external format.
845 * enhancement: encapsulation of named generic functions now happens without
846 altering the identity of the function bound to the name.
847 * bug fix: Windows applications without the console window no longer misbehave.
848 (patch by Wilfredo Velazquez, lp#1256034).
849 * bug fix: modular arithmetic optimizations do not stumble on dead branches
850 with bad constants. (reported by Douglas Katzman)
851 * bug fix: CLISP can be used again as a cross-compilation host.
852 (Thanks to Vasily Postnicov, lp#1261451)
853 * bug fix: run-program crashed with :directory nil. (lp#1265077)
855 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
856 * optimization: complicated TYPEP tests are less opaque to the type
857 propagation pass. (lp#1229340)
858 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
859 * optimization: EQUALP on structures with raw slots (double-float/complex)
860 no longer conses and is faster.
861 * optimization: RESTART-CASE expands to more compact code.
862 Thanks to Jan Moringen. (lp#1249055)
863 * enhancement: Top-level defmethod without defgeneric no longer causes
864 undefined-function warnings in subsequent forms. (lp#503095)
865 * enhancement: Better error messages for system errors on Windows.
866 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
867 Cushing. (lp#1249183)
868 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
869 specification (multiple integer arguments) and signals a continuable error
870 if the current SBCL version is lower (older) than the specification.
872 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
873 * bug fix: EQUALP now compares correctly structures with raw slots larger
875 * bug fix: contribs couldn't be built on Windows with MinGW.
876 * bug fix: Better pathname handling on Windows. (lp#922117)
877 * bug fix: OPEN reports a more meaningful error when an existing file is
878 opened for output with :if-exists :new-version. Thanks to Philip
879 Munksgaard. (lp#455381)
880 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
881 CLOS-related errors. (lp#633911)
882 * bug fix: GC deadlocks caused by concurrent consing on Windows.
884 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
885 * optimization: better distribution of SXHASH over small conses of related
887 * other improvements to SXHASH:
888 ** use the whole of the positive-fixnum range for SXHASH of fixnums
889 * enhancement: The error message when calling an undefined alien function
890 includes the name of the function on x86-64.
891 * enhancement: sb-ext:run-program now supports :environment on Windows.
892 * enhancement: ASDF is no longer required to load contribs at runtime.
894 * enhancement: when called with a symbol, FIND-RESTART no longer calls
895 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
896 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
897 clusters better in some cases
898 * enhancement: SOME/ANY/other quantification higher-order functions no
899 longer cons. (lp#1070635)
900 * bug fix: forward references to classes in fasls can now be loaded.
902 * bug fix: don't warn on a interpreted->compiled function redefinition
903 from the same location. (patch by Douglas Katzman, lp#1042405)
904 * bug fix: Create vectors of proper internal length when reading literal
905 vectors from FASLs. (Reported by Jan Moringen)
906 * bug fix: COMPILE can now successfully compile setf functions.
907 (Reported by Douglas Katzman)
908 * bug fix: run-program performs more correct escaping of arguments on
909 Windows. (lp#1239242)
910 * bug fix: function-lambda-expression on generic functions returns the
912 * bug fix: (the [type] [constant]) now warns when [constant] matches
913 [type] except for the number of values. (Reported by Nathan Trapuzzano
915 * bug fix: signal errors in required cases of slot-definition initialization
916 protocol. (lp#309072)
917 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
918 (thanks to Stelian Ionescu, lp#1242643)
919 * bug fix: when given a restart object, FIND-RESTART checks whether the
920 restart is active and, when a condition is supplied, whether the restart
921 is associated to a different condition (lp#774410)
923 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
924 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
925 shutdown(3). (thanks to Jan Moringen, lp#1207483)
926 * enhancement: document extensible sequences. (thanks to Jan Moringen,
928 * optimization: EQUAL and EQUALP transforms are smarter.
929 (thanks to Elias Martenson, lp#1220084)
930 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
931 * bug fix: probe-file now can access symlinks to pipes and sockets in
932 /proc/pid/fd on Linux. (reported by Eric Schulte)
933 * bug fix: SBCL can now be built on Solaris x86-64.
934 * bug fix: Floating point exceptions do not persist on Solaris anymore.
935 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
936 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
938 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
939 (thanks to Stephan Frank)
940 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
941 (thanks to Stephan Frank, lp#1206191)
942 * bug fix: sb-safepoint can now reliably handle signal interruptions of
943 foreign code. (lp#1133018)
944 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
945 constructors no longer fails to merge actual and default initargs
946 (thanks to Jan Moringen, lp#1179858)
947 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
948 constructors handles non-KEYWORD initialization arguments more correctly.
949 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
950 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
951 * bug fix: class definitions with CPLs inconsistent with their metaclasses
952 are less likely to destroy the object system's integrity. (lp#309076)
953 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
954 standard. (lp#1203585, thanks to Jan Moringen)
955 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
956 settings. (lp#1023721)
957 * bug fix: getting the order of arguments to
958 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
959 rather than a failed AVER. (reported by Paul Nathan)
960 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
961 arguments during copying on x86 and x86-64; it may still happen on other
962 platforms when there are more fixed arguments than stack slots.
963 (reported by Jan Moringen)
965 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
966 * enhancement: support building the manual under texinfo version 5.
968 * enhancement: Windows builds no longer display the "Kitten of Death" message.
969 A warning is instead appended to the regular banner, and may be muted with
970 --noinform. (lp#728247)
971 * enhancement: support building under new linker handling of syscalls under
972 NetBSD. (thanks to Robert Swindells)
973 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
974 (regression since 1.1.9)
975 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
976 compiler macro. (thanks to Douglas Katzman).
977 * bug fix: signal a warning when defining a setf-function when a
978 setf-expander is already present. (thanks to Douglas Katzman).
979 * bug fix: improved threading on PPC.
980 * bug fix: ROOM works again on Windows. (lp#1206456)
981 * bug fix: Streams were flushed even when there was one byte still left in
982 the buffer. (lp#910213)
983 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
984 either NIL or :ERROR. (reported by Jan Moringen)
986 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
987 * enhancement: ASDF has been updated to 3.0.2.
988 * optimization: stack frames are packed more efficiently on x86oids, which
989 ought to reduce the frequency of Methuselahn conservative references (it
990 certainly helps with gc.impure.lisp / BUG-936304 on x86).
991 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
992 recognized in modular arithmetic contexts, and compile to native negate,
993 rather than going through bignums only to keep the low bits.
994 * bug fix: Compiling potential modularic arithmetic forms does not cause type
995 errors when some integer types lack lower or upper bounds. (lp#1199127)
996 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
997 bitwidth before being used in a non-modular context. (lp#1199428)
998 * bug fix: Multiple catch/unwind blocks in a single function are now
999 allocated in the right stack order on win32. (lp#1072739)
1001 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
1002 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
1003 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
1004 * enhancement: disassemble now annotates some previously missing static
1005 functions, like LENGTH.
1006 * enhancement: clean.sh now also cleans doc/internals.
1007 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
1008 print a symbol with a package prefix.
1009 * enhancement: The debugger and backtracing are more robust against buggy
1010 PRINT-OBJECT methods.
1011 * optimization: calls to static functions on x86-64 use less instructions.
1012 * optimization: compute encode-universal-time at compile time when possible.
1013 * optimization: when referencing internal functions as #'x, don't go through
1014 an indirect fdefn structure.
1015 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
1016 * optimization: (mod fixnum) type-checks are performed using one unsigned
1017 comparison, instead of two.
1018 * optimization: enable more modular arithmetic transforms in the presence of
1020 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
1021 when the result is known to be negative.
1022 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
1023 * optimization: comparisons between rationals and constant floats or between
1024 integers and constant ratios are now converted to rationals/integers at
1026 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
1027 * bug fix: problems with NCONC type derivation (reported by Jerry James).
1028 * bug fix: EXPT type derivation no longer constructs bogus floating-point
1029 types. (reported by Vsevolod Dyomkin)
1030 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
1031 addrinfo. (lp#1187041, patch by Jerry James)
1032 * bug fix: uninitialized type-error conditions can now be printed.
1034 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
1035 listening, allowing several tests to run in parallel.
1036 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
1037 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
1039 * bug fix: Specialised SIMD-PACK types can be negated.
1040 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
1041 reported by Eric Marsden)
1042 * bug fix: FP return values from foreign calls are always rounded to single
1043 or double float precision on x87.
1044 * bug fix: Known-safe vector access on x86oids should not fail spuriously
1045 when the index is of the form (+ x constant-positive-integer).
1046 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
1047 * bug fix: backtrace printer no longer tries to create very large lists when
1048 the arg-count register is clobberred by other code. (lp#1192929)
1049 * bug fix: x86 should never signal an FP exception while boxing an FP value,
1050 a situation that lands us into ldb.
1052 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
1053 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
1054 ROOM, plus a few SB-INTROSPECT functions) has been completely
1055 rewritten; it may now exhibit different bugs than before.
1056 * new feature: minimal runtime/compiler intrastructure support for SSE
1057 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
1058 feature :sb-simd-pack. This should enable intrinsics extensions as
1059 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
1060 for maintaining a branch for so long.
1061 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
1062 the working directory of the spawned process.
1063 (lp#791800) (patch by Matthias Benkard)
1064 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
1065 stack-allocated on PPC.
1066 * enhancement: "fixed objects" can now be stack-allocated on PPC.
1067 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
1068 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
1069 also returns VOPs which do not translate any functions, and finds
1070 defoptimizer types ir2convert and stack-allocate-result.
1071 * enhancement: better type derivation for APPEND, NCONC, LIST.
1073 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
1074 heap in a manner similar to the GC rather than its previous ad-hoc
1075 scheme, and is therefore no less and possibly more accurate.
1076 * fixes and enhancements related to Unicode:
1077 ** the character database information has been updated to Unicode 6.2;
1078 ** support for canonical and compatibility decomposition of characters has
1079 been added, along with support for primary composition;
1080 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
1081 NFKD) has been included;
1082 ** querying the character database for code points not defined by Unicode
1083 gives less wrong answers (lp#1178038, reported by Ken Harris)
1084 * enhancement: print intermediate evaluation results for some ASSERTed
1085 expressions. (lp#789497) (patch by Alexandra Barchunova)
1086 * enhancement: x86-64 disassemblies are annotated with unboxed constant
1087 values when there are references to (RIP-relative) unboxed constants.
1088 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
1089 of quadratically with the size of the input in the worst case.
1091 * bug fix: handle errors when initializing *default-pathname-defaults*,
1092 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
1093 decoding errors, or directories being deleted.
1094 * bug fix: Loading a core with a discontiguous dynamic space now correctly
1095 computes the amount of dynamic space used.
1096 * bug fix: disassembler missing ",8" on SHLD
1097 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
1098 that provide an "invalid" stack frame link for the signal handler
1099 itself now use the saved-fp-and-pc mechanism to pick up from the stack
1100 frame in the interrupt (signal) context. This is known to affect
1101 threaded FreeBSD/x86-64.
1102 * bug fix: some LOOP statements couldn't be compiled.
1104 * bug fix: sb-sequence:dosequence works on literal vectors.
1105 * bug fix: errors in generic arithmetic show the assembly routine's
1106 caller on x86 and x86-64. (lp#800343)
1107 * bug fix: Compile-time type errors should never result in COMPILE-FILE
1108 failure. (lp#943953)
1109 * bug fix: Known bad local calls do not cause strange failures when
1110 emitting or dumping code. (lp#504121)
1111 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
1112 codegen errors: type checks are inserted as necessary. (lp#1177703)
1113 * bug fix: Unsigned modular arithmetic is correctly converted into signed
1114 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
1115 * bug fix: a combination of inlined local function with &optional and
1116 recursion no longer causes undescriptive compiler errors. (lp#1180992)
1117 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
1118 when testing for non-zero-ness.
1119 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
1121 * bug fix: Type mismatch for the value of conditional expressions are
1122 correctly reported when detected at compile-time, instead of complaining
1123 about a constant NIL (similar for non-EQ-comparable catch tags).
1124 * bug fix: Referring to INLINE global functions as values should not result
1125 in a compilation failure. (lp#1035721)
1126 * optimization: faster ISQRT on fixnums and small bignums
1127 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
1128 * optimization: On x86-64, the number of multi-byte NOP instructions used
1129 for code alignment is now always minimal.
1130 * optimization: On 64-bit targets, the compiler generates much faster
1131 code for type checks for types known at compile time that are smaller
1132 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
1133 their COMPLEX variants.
1134 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
1135 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
1136 * optimization: ROOM no longer conses so egregiously on non-x86oid
1138 * optimization: associative bitwise operations reassociate patterns like
1139 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
1141 * optimization: quasiquote expressions now perform more constant folding,
1142 instead of consing equal lists at runtime. (lp#1026439)
1143 * optimization: local call analysis of inlined higher-order function
1144 should converge more quickly, resulting in better code for complex
1146 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
1147 integer constants are handled more cleverly, especially when they
1148 can be represented as sign-extended (signed-byte 32). (Based on a
1149 patch by Douglas Katzman)
1150 * optimization: IF/IF conversion should reliably result in sane code
1151 when (some of) the results of the inner IF are always false or
1153 * optimization: On x86oids, variable right shifts of machine words are
1154 compiled into straight SAR/SHR, instead of going through the generic
1157 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
1158 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
1160 * bug fix: :allocation slot option works for condition slots
1162 * bug fix: redefining conditions does not lead to multiple evaluations of
1163 hairy slot initfunctions anymore (lp#1164969)
1164 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
1166 * bug fix: function constants now work as initforms and default initarg
1167 values of conditions (lp#539517)
1168 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
1169 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
1170 * bug fix: no more bogus ## references when pretty printing backquoted
1171 forms with non-trivial structure sharing. (lp#1161218)
1172 * bug fix: Don't signal an error on (setf (documentation nil 'function)
1173 "doc"). Signal a style-warning instead when trying to set documentation
1174 of NIL for all other documentation types. (Reported by Zach
1175 Beane; regression since 2e52fa05.)
1176 * bug fix: modular arithmetic involving large constants and conditionals
1177 should no longer result in spurious dead code elimination. (Reported by
1179 * bug fix: our mach exception handler can seemingly called very early in
1180 the program execution process on OS X 10.8.0. Try and handle that case
1181 robustly, without potentially leaking mach ports too much.
1182 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
1184 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
1185 * enhancement: the continuable error when defknown-ing over extant
1186 fndb entries can be ignored by passing :overwrite-fndb-silently t
1187 as a keyword argument to sb-c:defknown (after attributes). Useful
1188 to allow defknown to be re-loaded. Use with :allow-other-keys t
1189 for backward compatibility.
1190 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
1192 * bug fix: Prevent a make-array transform from modifying source forms
1193 causing problems for inlined code. Thanks to Bart Botta.
1194 (regression since 1.0.42.11-bis)
1195 * bug fix: clear-output calls the correct gray stream routine,
1196 sb-gray:stream-clear-output. (lp#1153257)
1197 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
1199 * bug fix: Better error messages for package operations (lp#1154776)
1200 * bug fix: delete-package on a nonexistent package should signal a cerror.
1201 (regression since 1.0.37.44).
1202 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
1203 (lp#1154946, lp#1072112)
1204 * bug fix: compiling make-array no longer signals an error when the
1205 element-type is an uknown type, a warning is issued instead.
1206 Thanks to James Kalenius (lp#1156095)
1207 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
1208 produces wrong results for some inputs. (Thanks to Jan Moringen.)
1211 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
1212 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
1214 * new feature: package local nicknames. See manual for details.
1215 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
1216 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
1217 * enhancement: easier to use restarts for resolving name-conflicts
1218 resulting from IMPORT, EXPORT, or USE-PACKAGE.
1219 * enhancement: variant DEFPACKAGE forms now signal a full error with
1220 restarts provided for resolving the situation. (lp#891351)
1221 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
1222 DEFPACKAGE forms can now signal a full error with restarts provided for
1223 resolving the situation. See manual for details. (lp#891351)
1224 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
1225 (Thanks to Anton Kovalenko.) (lp#1102748)
1226 * enhancement: backtrace improvements
1227 ** secondary CLOS dispatch functions have better debug names (lp#503081)
1228 ** easier to read method names in backtraces. See
1229 SB-DEBUG:*METHOD-FRAME-STYLE*.
1230 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
1231 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
1232 SB-DEBUG:BACKTRACE-AS-LIST.
1233 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
1234 information is available in less intrusive form as frame annotations.
1235 * enhancement: SB-POSIX now provides MAP-ANON.
1236 * enhancement: test-suite results are colorized, failures in red, unexpected
1237 success in green. Works on Windows and on terminals with ANSI escape code
1238 support. Can be disabled with --no-color.
1239 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
1240 (thanks to James M. Lawrence)
1241 * bug fix: no more unused variable style warnings from RESTART-CASE
1242 macroexpansion (lp#1113859)
1243 * bug fix: no more unused variable style warnings when loading
1244 sb-bsd-sockets.asd (lp#1114681)
1245 * bug fix: deleting a package removes it from implementation-package
1246 lists of other packages.
1247 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
1248 This does not fix the occasional "interrupt already pending" issue, though.
1249 * bug fix: (setf (documentation 'x 'function)) and
1250 (setf (documentation #'x t)) set documentation in different places.
1251 (regression since 1.0.43.63)
1252 * bug fix: build on newer glibc. (lp#1095036)
1254 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
1255 * optimization: LOOP expressions using "of-type character" have slightly
1256 more efficient expansions.
1257 * bug fix: very long (or infinite) constant lists in DOLIST do not result
1258 in very long compile times or heap exhaustion anymore. (lp#1095488)
1259 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
1260 * bug fix: adjust-array ignored :initial-element for simple-vectors.
1262 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
1263 longer cause infinite loops (on circular data) or violate eqlity
1264 constraints. (lp#1099708)
1265 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
1267 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
1268 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
1270 * enhancement: support for C-c to interrupt the foreground thread
1271 on Windows. (Thanks to Anton Kovalenko.)
1272 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
1273 * enhancement: Safepoint builds on POSIX platforms can now optionally be
1274 built without pseudo-atomic sequences and their run-time overhead.
1275 * enhancement: Threads created outside of Lisp can enter Lisp through
1276 alien callbacks and appear as Lisp threads for the duration of that
1277 function invocation. On safepoint builds only.
1278 * enhancement: Miscellaneous improvements to namestrings and underlying
1279 calls to OS functions for file system access on Windows. (Thanks to
1281 * enhancement: The MSI installer support for Windows now uses Windows
1282 Installer XML at least version 3.5 and includes various usability
1283 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
1284 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
1285 on Windows. (Thanks to Anton Kovalenko.)
1286 * enhancement: The Windows backend now supports the x86-64 platform.
1287 (Thanks to Anton Kovalenko.)
1288 * bug fix: fasls are now once again directly executable (on platforms
1289 supporting shebang lines, with a suitably-installed sbcl).
1290 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
1291 * bug fix: Fix CAS access to slots of direct instances of structure classes
1292 in the presence of subclasses sharing the same conc-name.
1293 * bug fix: Logical pathname namestrings on Windows have been changed to
1294 be lower-case, to minimize differences between POSIX and Windows.
1296 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
1297 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
1298 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
1299 (NT 5.0) is no longer being maintained.
1300 * notice: Starting with this version, SBCL on Windows no longer supports
1301 building with disabled thread support.
1302 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
1303 * enhancement: New feature sb-dynamic-core allows the runtime to be
1304 rebuilt or relocated without requiring changes to the core file on
1305 all linkage table platforms. Required on Windows. (Thanks to Anton
1307 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
1308 * enhancement: I/O on Windows unnamed pipes is interruptible
1309 asynchronously using interrupt-thread, timers when running on Windows NT
1310 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
1312 * enhancement: Support for the experimental safepoint-based stop-the-world
1313 protocol on the PowerPC platform.
1314 * bug fix: Non-blocking reads from the Windows console were not necessarily
1315 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
1316 * bug fix: stability of threads on Windows has been improved upon through
1317 an updated stop-the-world protocol (thanks to Anton Kovalenko).
1319 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
1320 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
1321 (COMPILE and COMPILE-FILE still do.)
1322 * optimization: the SPARC backend now supports the precise generational
1323 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
1324 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
1325 * enhancement: add experimental support for the SB-THREAD feature and the
1326 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
1327 Threads are enabled by default, and this version of SBCL is considered
1328 to be the last and final release to officially support building with
1330 * optimization: The compiler no longer rotates loops in some cases where
1331 this transformation actually lead to worse code being generated.
1332 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
1333 symbol-macros by lexical bindings.
1334 * bug fix: stack allocation was prevented by high DEBUG declaration in
1336 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
1337 (thanks to SANO Masatoshi)
1338 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
1339 :JUNK-ALLOWED was true.
1340 * bug fix: type derivation inferred overly conservative types for
1341 unions of array types. (lp#1050768)
1343 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
1344 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
1345 source annotation of DISASSEMBLE output. Defaults to T.
1346 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
1347 WAIT-P argument added to WITH-RECURSIVE-LOCK.
1348 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
1350 * enhancement: Optional features (not enabled by default) allow the
1351 use of signals for inter-thread synchronization to be reduced on certain
1352 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
1353 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
1354 to test these experimental features. Known remaining bugs include minor
1355 thread safety issues, less timely freeing of memory by GC, and certain
1356 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
1357 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
1358 comparisons, particularly on almost-sorted inputs.
1359 * bug fix: Reading floats with large exponents no longer takes too much time
1360 before reporting that the exponent is too large.
1361 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
1362 correctly when the received datagram is larger than the provided buffer.
1363 (lp#1023438, thanks to Robert Uhl)
1364 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
1365 a SYMBOL-VALUE form with a constant symbol argument.
1366 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
1367 into a DEFCAS defined place was used as the place.
1368 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
1369 for from bit-vectors.
1370 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
1371 lead to internal errors or crashes (lp#1058799).
1372 * documentation: a section on random number generation has been added to the
1375 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
1376 * enhancement: implicit generic function warnings now specify the package
1377 in which the new generic function is being created.
1378 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
1379 updates of CAS-able places (similar to Clojure's swap!).
1380 * enhancement: run-program no longer decodes and re-encodes environment when
1381 :environment argument is not provided. (lp#985904)
1382 * enhancement: errors during compiler-macro expansion no longer cause
1383 runtime errors, only a compile-time warning, otherwise behaving as if
1384 the compiler macro had declined to expand.
1385 * optimization: On x86-64, code alignment of block headers is done with
1386 multi-byte NOPs now instead of repetitions of the single-byte NOP.
1387 * optimization: MAP-INTO is substantially faster when the target sequence is
1388 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
1389 thanks to James M. Lawrence)
1390 * optimization: the compiler no longer heap-conses to check exits in cases
1391 where the exit function is dynamic extent, or when it can prove the exit
1392 function cannot escape. (lp#1002534)
1393 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
1394 element type, and vectors that aren't SIMPLE-ARRAYs.
1395 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
1396 speed (around 1/3 the time in some cases), and a little better in terms of
1397 comparison calls. (Thanks to Takeru Ohta)
1398 * bug fix: On SPARC, a limitation on the number of code constants emittable
1399 by the compiler has been lifted, allowing certain long functions to
1400 compiled and assembled which had previously been unsupported; fixes
1401 cl-bench on this ISA (lp#1008996).
1402 * bug fix: potential for infinite recursion during compilation of CLOS slot
1403 typechecks when dependency graph had loops. (lp#1001799)
1404 * bug fix: error forms reported with some program-errors were not escaped
1406 * bug fix: functions from EVAL are now on more equal footing with functions
1407 from COMPILE. (lp#1000783, lp#851170, lp#922408)
1408 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
1409 objects as its :METHOD-COMBINATION argument, not just lists designating
1410 method combinations. (lp#936513)
1411 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
1413 * bug fix: restore build on solaris/sparc. (lp#1008506)
1414 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
1415 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
1416 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
1417 as keyword arguments no longer accidentally match unevaluated symbols
1419 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
1420 parameter was zero, now it signals an error. (lp#905817, fixed since
1422 * bug fix: run-program with :pty t no longer makes the pty as the process's
1423 controling terminal.
1424 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
1427 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
1428 * RANDOM enhancements and bug fixes:
1429 ** bug fix: the range and distribution of random integers could be
1430 catastrophically wrong when the compiler derived the type of its
1431 argument as a disjoint set of small integers.
1432 ** bug fix: the distribution of random integers is now completely
1433 uniform even when the specified limit is not a power of two.
1434 (Previously some values could be about 0.1 % more probable than
1435 others in the worst case.) (lp#309467)
1436 ** RANDOM on large integer arguments is generally faster and conses
1437 less than before; this is visible for fixnums above a length of
1438 about 24 bits, but extremely so for bignums: the old implementation
1439 used time and space quadratical in the size of the argument there,
1440 the new one is linear.
1441 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
1442 main entry point, SB-EXT:QUIT is deprecated.
1443 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
1444 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
1445 * enhancement: FASL loading no longer grabs the world-lock.
1446 * enhancement: GENCGC reclaims space more aggressively when objects being
1447 allocated are a large fraction of the total available heap space.
1449 * enhancement: backtraces show the correct number of arguments for frames
1450 called with too many arguments.
1451 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
1453 * enhancement: ASDF has been updated 2.21.
1454 * optimization: fewer uses of full calls to signed modular functions.
1456 * optimization: typechecking alien values is typically 5 x faster.
1457 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
1459 * bug fix: file compilation performance issues when dumping subtypes
1460 of CHARACTER (lp#994487)
1461 * bug fix: fixed disassembly of some SSE instructions on x86-64.
1462 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
1463 OPEN. (lp#969352, thanks to Kambiz Darabi)
1464 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
1466 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
1467 classoid even if X was not the proper name of the class. (lp#941102)
1468 * bug fix: declaration leakage between lexical environments due to careless
1469 use of NCONC in MAKE-LEXENV. (lp#924276)
1470 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
1471 *default-pathname-defaults* contains NAME or TYPE components.
1472 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
1473 from CL package, e.g. (loop . 10).
1474 * bug fix: run-program with existent or non-existent files for :output or
1475 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
1476 returns NIL instead of signalling an obscure error.
1477 * bug fix: fix miscompilation of some logand forms with large constant
1478 arguments. (lp#974406)
1479 * bug fix: account for funcallable-instance objects properly in ROOM.
1480 * bug fix: incorrect octets reported for c-string decoding errors.
1482 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
1484 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
1485 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
1486 allowing faster release of memory back to the OS. (lp#991293)
1487 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
1488 existing deadline for the dynamic scope of its body.
1489 * bug fix: compiler-internal interval arithmetic needed to be more
1490 conservative about open intervals when operated on by monotonic but not
1491 strictly-monotonic functions. (lp#975528)
1492 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1493 it's also slightly faster. (lp#998926)
1494 * bug fix: better error messages for malformed declarations.
1496 * bug fix: define-condition didn't return the name of the defined condition.
1498 ** improved docstrings: REPLACE (lp#965592)
1500 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1501 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1502 could end up in the heap making GC unhappy.
1503 (Thanks to James Knight, lp#911027)
1505 ** SBCL can now be built using Clang.
1506 ** ASDF has been updated 2.20.
1507 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1508 * bug fix: don't complain about a too-hairy lexical environment for inlining
1509 when the function has never been requested for inlining. (lp#963530)
1511 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1512 * enhancements to building SBCL using make.sh:
1513 ** --fancy can be specified to enable all supported feature enhancements.
1514 ** --with-<feature> and --without-<feature> can be used to specify
1515 which features to build with.
1516 ** --arch option can be used to specify the architecture to build for.
1517 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1518 full-blows cross-compilation.)
1519 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1520 which allows specifying name of the default interning package for the
1522 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1523 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1524 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1525 null alien when malloc() fails. (lp#891268)
1526 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1527 conditions can be conveniently accessed through function with the same
1528 name, analogously to CONTINUE.
1529 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1530 from the printer by type, causing an error marker to be printed instead.
1531 (Thanks to Attila Lendvai)
1532 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1533 generally behave better when errors occur during printing.
1534 * enhancement: the test runner now takes a --report-skipped-tests argument
1535 to report the individual tests skipped as well as the number of skipped
1537 * enhancement: undefined functions now appear in backtraces as ("undefined
1538 function") instead of ("bogus stack frame") on x86oids.
1539 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1540 deadlock errors are reported in an easier-to-decipher manner.
1541 * enhancement: DESCRIBE on type designators reports the expansion in more
1543 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1544 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1545 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1546 * enhancement: better disassembly of segment-prefixes on x86 and other
1547 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1548 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1549 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1550 * optimization: SUBSEQ on vectors of unknown element type is substantially
1552 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1553 be stack-allocated. (lp#902351)
1554 * optimization: the compiler is smarter about representation selection for
1555 floating point constants used in full calls.
1556 * optimization: the compiler no longer refuses to coerce large fixnums to
1557 single floats inline, except on x86 where this limitation is still
1559 * optimization: truncation operations on integers with constant divisor
1560 arguments 1 and -1 are optimized away.
1561 * bug fix: deadlock detection could report the same deadlock twice, for
1562 two different threads. Now a single deadlock is reported exactly once.
1563 * bug fix: interval-arithmetic division during type derivation did not
1564 account for signed zeros.
1565 * bug fix: compiler error when typechecking a call to a function with
1566 non-constant keyword arguments.
1567 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1568 * bug fix: condition slot accessors no longer cause undefined function
1569 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1570 form that defines them. (lp#896379)
1571 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1572 by ANSI. (lp#894202)
1573 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1574 bogusly report NIL, T.
1575 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1576 required arguments ignored and performed assignments to others.
1578 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1579 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1580 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1581 * bug fix: redefining a function whose previous definition contained an
1582 unknown type no longer causes a style-warning. (lp#806243)
1583 * bug fix: undefined functions now appear in backtraces as ("undefined
1584 function") instead of ("bogus stack frame") on non-x86oids.
1585 * bug fix: backtraces are no longer cut off at ("undefined function") when
1586 called under certain circumstances (involving a caller-allocated stack
1588 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1589 systems. (regression since 1.0.53)
1590 * bug fix: GC deadlocks from dladdr() on certain platforms.
1591 * bug fix: broken standard streams no longer automatically cause recursive
1592 errors on debugger entry.
1593 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1594 (regression since 1.0.53)
1595 * bug fix: attempts to stack allocate a required argument to a function with
1596 an external entry point caused compiler-errors.
1597 * bug fix: compiler notes for failed stack allocation for a function argument
1598 no longer claim to be unable to stack allocate the function.
1599 * bug fix: COERCE now signals a type-error on several coercions to
1600 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1601 * bug fix: missing failure-to-stack-allocate compiler notes for some
1602 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1603 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1605 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1607 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1608 * minor incompatible changes:
1609 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1610 instead of the link.
1611 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1612 directory, but now signal an error instead. Use TRUENAME to resolve the
1613 pathname if you wish to delete the linked directory, and DELETE-FILE if
1614 you wish to delete the
1615 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1616 symbols associated with it will trigger a compile-time warning.
1617 * thread-related enhancements:
1618 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1619 Many thanks to generous donors!)
1620 ** Threading is now more reliable on non-Linux platforms. We still don't
1621 consider threads on non-Linux platforms good enough to enable them by
1622 default, but they're in a clearly better shape now.
1623 ** Deadlines supported now on all platforms.
1624 ** All blocking functions in the threading API now have a :TIMEOUT
1626 ** Semaphore notification objects have been added to SB-THREAD.
1627 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1628 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1629 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1630 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1631 using an API anologous to defining new SETFable places.
1632 * GC-related enhancements and bug fixes:
1633 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1634 and Gb suffixes. Default is megabytes as before.
1635 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1636 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1637 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1638 new defaults are in place to prevent hitting swap on low-end systems.
1639 Use build-time option --dynamic-space-size to build an SBCL with
1640 another default, or the runtime option to adjust the size at startup: a
1641 good size is at most equal to the amount of physical memory the system
1643 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1645 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1646 refuses to create SIMPLE-FUN objects.
1647 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1649 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1650 validation of pointer objects as GENCGC does, instead of a
1651 comparatively weak bounds-check against the heap spaces.
1652 * SB-BSD-SOCKETS bug fixes:
1653 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1654 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1655 systems with getaddrinfo().
1656 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1657 safe outside systems with getaddrinfo().
1658 * enhancement: ASDF has been updated 2.019.
1659 * enhancement: special-case TCO prevention for functions which never return
1660 extended to untrusted types, keeping one more frame's worth of debug
1661 information around in many cases.
1662 * enhancement: debug-names of anonymous and local function are more
1663 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1664 * enhancement: on win32, ABS of complex floats guards better against
1665 overflows. (lp#888410)
1666 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1667 process exiting with code 1. (lp#676987)
1668 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1669 the system where on the filesystem the SBCL sources themselves are
1670 located. (Thanks to Zach Beane)
1671 * enhancement: the compiler is now able to derive tighter bounds for
1672 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1673 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1674 correctly, even on wide-fixnum builds. (lp#887220)
1675 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1676 resolved to directories.
1677 * bug fix: type mismatch when assigning to lexical variables no longer
1678 result in fasl-dumping internal type objects. (lp#890750)
1679 * bug fix: type mismatch on (SETF AREF) and function return values no
1680 longer result in fasl-dumping internal type objects.
1681 * bug fix: With several combinations of argument types, for example (EXPT
1682 <integer> <(complex double)>), EXPT now uses double-precision throughout
1683 instead of partially calculating only to single-precision. (lp#741564;
1684 thanks to Lutz Euler)
1685 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1686 objects when interrupted by GC on PPC.
1688 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1689 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1690 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1691 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1692 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1693 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1694 targets is now 63 bits (up from 61).
1695 * enhancement: DESCRIBE now reports a lambda-list and source location
1696 for complext setf-expanders.
1697 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1698 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1699 of multiple-valued places to be set to NIL, instead of signalling an
1700 error (per a careful reading of CLHS 5.1.2.3).
1701 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1702 * bug fix: repair crash in x86oid darwin signal handling emulation
1703 when built with certain compilers.
1704 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1705 rotation arguments on x86-64. (lp#882151)
1706 * bug fix: low-level control flow optimisations could result in bogus
1707 code in functions with tail and non-tail calls to local functions on
1708 x86oids. (lp#883500)
1709 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1710 to emit literal characters > (code-char 4095), for comparisons with
1711 constant characters.
1712 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1713 on 64 bit platforms. (lp#881445)
1714 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1715 delete the wrong file when using relative pathnames. (lp#882877)
1716 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1717 sequences and :KEY NIL.
1719 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1720 * enhancement: ASDF has been updated to version 2.017.
1721 * enhancement: the --core command line option now accepts binaries with
1723 * enhancement: when built with :sb-core-compression, core files (regular
1724 or executable) can be compressed with zlib. Use the :COMPRESSION
1725 argument to SAVE-LISP-AND-DIE to specify a compression level.
1726 * enhancement: --[no-]merge-core-pages determines whether the runtime
1727 hints the operating system that identical core pages between SBCL
1728 processes should share the same physical memory. Default is to only
1729 enable this for compressed cores.
1730 * optimization: SLEEP no longer conses.
1731 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1732 or bit-vectors when using the standard pretty-print dispatch table.
1733 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1735 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1736 AREF, CHAR, etc. (lp#826971)
1737 * bug fix: compiler-errors causes by integer arguments with composed of
1738 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1739 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1740 expressions. (lp#770184)
1741 * bug fix: complex single float literals are correctly aligned when used
1742 as arguments of arithmetic operators.
1743 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1744 fixnum is correct. (reported by Peter Keller)
1745 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1746 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1748 * bug fix: redefining classes such that slots with custom allocation are
1749 added or removed works again.
1751 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1752 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1753 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1754 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1755 * enhancement: added support for socket keepalive timeout intervals
1756 and probe counts on Linux.
1757 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1758 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1759 * enhancement: added new toplevel options --quit and --non-interactive
1761 * enhancement: the Windows port of SBCL now builds and runs on Wine
1762 (thanks to Anton Kovalenko).
1763 * enhancement: more, and more correct, SSE instruction definitions on
1764 x86-64 (thanks to Alexander Gavrilov).
1765 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1766 to help the processor execute spin loops, when applicable. Currently
1767 implemented for x86 and x86-64.
1768 * optimization: unsigned integer divisions by a constant are implemented
1769 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1770 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1771 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1772 instructions. (lp#814688)
1773 * bug fix: COERCE to unfinalized extended sequence classes now works.
1774 (reported by Jan Moringen; lp#815155)
1775 * bug fix: a compiler error during typecheck generation, reported by Eric
1776 Marsden. (lp#816564)
1777 * bug fix: obsolete instance protocol fires when shared slots are added
1779 * bug fix: fixed-format floating point printing with scaling factors.
1781 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1782 backtraces. (lp#818460)
1783 * bug fix: better backtraces for interrupted syscall frames on x86.
1785 * bug fix: SSE comparison instructions can be disassembled even when one
1786 operand is in memory. (lp#814702)
1787 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1788 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1789 type information associated with the VALUES form.
1790 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1792 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1793 first write (lp#561642).
1794 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1795 * bug fix: bound propagation involving conversion of large bignums to
1796 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1798 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1799 functions; reported by Lutz Euler (lp#826459).
1800 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1803 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1804 * enhancement: errors from FD handlers now provide a restart to remove
1805 the offending handler.
1806 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1808 * enhancement: location of user or system initialization file can now easily
1809 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1810 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1811 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1812 the thunk, as a keyword argument, :arguments.
1813 * enhancement: constraint propagation is simplified (and sped up) when
1814 COMPILATION-SPEED > SPEED.
1815 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1816 * enhancement: debugger understands &MORE arguments better.
1817 * optimization: extracting bits of a single-float on x86-64 has been
1818 optimized. (lp#555201)
1819 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1820 when (> SPEED SPACE).
1821 * optimization: local call trampolines (x86 and x86-64) are emitted
1823 * optimization: implicit value cells for dynamic-extent closed-over bindings
1824 on x86 and x86-64 can hold unboxed values as well.
1825 * meta-optimization: improved compilation speed, especially for large
1826 functions. (lp#792363 and lp#394206)
1827 * bug fix: bound derivation for floating point operations is now more
1828 careful about rounding possibly closing open bounds. (lp#793771)
1829 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1830 backwards incompatible change in 1.0.48.27)
1831 * bug fix: occasional debugger errors in when a type-error occured in a
1832 function with dynamic-extent &rest list.
1833 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1834 boa-construtors can be used to initialized structure slots.
1835 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1836 (lp#795705, regression)
1837 * bug fix: DIRECTORY works better on logical pathnames.
1838 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1839 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1840 * bug fix: the compiler no longer constant-folds NaNs in
1841 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1842 * bug fix: FORMAT now handles floating point rounding correct, eg.
1843 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1845 * bug fix: style warning during lambda-list introspection of generic
1846 functions with both optional and key argments.
1847 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1848 folding. (lp#729765)
1849 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1852 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1853 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1854 interrupts for its body.
1855 * enhancement: source locations are now available for files loaded as
1856 source, compile-time-too evaluation, and initialization files.
1857 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1858 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1859 when a temporary file is used for compilation.
1860 * enhancement: ASDF has been updated to version 2.015.3.
1861 * enhancement: backtraces involving frames from the default evaluator are
1863 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1865 * enhancement: more informative compile-time warnings and runtime errors for
1866 type-errors detected at compile-time.
1867 * enhancement: deadlock detection for mutexes and spinlocks.
1868 * enhancement: dynamic-extent for &rest lists stack allocate only their
1869 spines, not their argumets. While portable code should not rely on this,
1870 particularly in combination with inlining, it should make dynamic-extent
1871 easier to use safely.
1872 * enhancement: SB-POSIX improvements:
1873 ** WNOHANG and WUNTRACED are exported.
1874 ** SYSCALL-ERROR now also provides the name of the failing system call.
1875 * enhancement: --script improvements:
1876 ** errors on standard input, output, and error streams are handled and
1877 cause scripts to exit silently, making them easier to use in shell
1879 ** backtraces from scripts now go to standard error instead of the
1880 terminal even if one is available.
1881 ** --script can be an argument, causing the script to be loaded from
1883 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1884 strings to foreign memory.
1885 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1886 a file, making it easier to understand heap dynamics.
1887 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1888 allows the compiler to automatically elide rest-list allocation so long as
1889 the call sites are in functions that the compiler knows cannot escape.
1891 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1892 especially in safe code when none of the required arguments have changed
1894 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1895 uninterruptible, as well as blocking reads from socket streams created
1896 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1897 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1898 from the to-char if the from-char is not a dispatch-macro character.
1899 * bug fix: references to undefined variables in function calls that are
1900 optimized away now signal a runtime error. (lp#722734)
1901 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1902 types from a function defined in the same file. (regression from
1904 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1906 * bug fix: spurious errors during QUIT when standard streams were closed.
1908 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1909 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1910 years, is now no longer supported.
1911 * enhancement: read() and write() have been added to SB-POSIX.
1912 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1913 accurately, allowing better typechecking of call-sites.
1914 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1915 are no longer caught. (reverted to pre 1.0.34 behaviour)
1916 * optimization: slightly faster ISQRT. (lp#713343)
1917 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1918 * bug fix: TRACE behaves better when attempting to trace undefined
1919 functions. (lp#740717)
1920 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1921 to (FUNCALL #'(LAMBDA ...) ...).
1922 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1923 a compile-time error. (lp#720382)
1924 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1926 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1927 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1928 optimization. (regression from 1.0.45.18/1.0.46.15)
1929 * bug fix: package locks did not protects against compile-time side-effects
1930 of DEFUN. (lp#675584)
1931 * bug fix: --dynamic-space-size argument is validated more carefully.
1933 * bug fix: memory fault from printing a malformed simple-condition.
1935 * bug fix: redefining classes so that slot-definition classes change now
1936 engages the obsolete instance protocol. (lp#766271)
1937 * bug fix: constant improper lists could break source coverage recording.
1939 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1940 could exhaust stack.
1942 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1943 * bug fix: fix mach port rights leaks in mach exception handling code on
1944 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1946 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1947 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1948 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1949 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1950 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1951 processed using EVAL -- now the appropriate toplevel form is reported instead.
1952 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1953 declarations. (lp#726331)
1954 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1955 that NIL/NULL is excluded from the type.
1956 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1958 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1959 and its compatriots.
1960 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1961 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1962 stack-allocated values out of their dynamic-extent. (lp#310175)
1963 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1964 x86-64 builds caused a type-error.
1965 * bug fix: calling COMPILE with something else than a lambda-expression as the
1966 second argument reports a more sensible error. (lp#718905)
1967 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1968 are detected. (lp#520607)
1969 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1971 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1972 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1973 methods. (regression from 1.0.45.18)
1974 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1975 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1976 * bug fix: several foreign functions accepting string also accepted NIL and
1977 consequently caused a memory fault at 0 now signal a type-error instead.
1979 * bug fix: under rare circumstances, constraint propagation could rewrite a
1980 variable reference to refer to a variable not in scope, causing an error
1981 during physical environment analysis when attempting to close over the
1982 variable. (lp#551227)
1983 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1985 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1986 * enhancement: largefile support on Solaris.
1987 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1988 arguments (lp#710017)
1989 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1990 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1992 * optimization: ERROR and CERROR are approximately 5 times faster.
1993 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1994 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1995 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1996 up instance creation in those cases.
1997 * optimization: arithmetic operations with multiple constant arguments in now
1998 have them reduced at compile-time. (lp#676414)
1999 * optimization: determining current character position on string-streams for
2000 pretty-printing was overly slow.
2001 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
2002 lifetime analysis to overwrite closed-over variables (lp#681092).
2003 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
2004 were not handled correctly (lp#713063).
2005 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
2007 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
2008 mistake. (lp#667297).
2009 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
2010 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
2011 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
2012 unintern the wrong symbol with the same name. (lp#693796)
2013 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
2014 making it possible to restore the initial table if it has been messed up.
2017 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
2018 * enhancement: ~/ and ~user/ are treated specially in pathnames.
2019 Refer to documentation for details.
2020 * enhancement: ASDF has been updated to version 2.010.
2021 * optimization: mutated closed-over variables that are only accessed by
2022 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
2023 declared to be DYNAMIC-EXTENT) are stored directly in their containing
2024 stack frame, rather than allocating a VALUE-CELL (lp#586103).
2025 * optimization: UNWIND-PROTECT cleanup functions are now declared
2027 * bug fix: backtracing function with &REST arguments now shows the full
2028 argument list. (lp#310173)
2029 * bug fix: return types for functions with complex lambda-lists are now
2030 derived properly (lp#384892)
2031 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
2032 long string arguments slowed the compiler down to a crawl.
2033 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
2034 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
2035 in the DEFMETHOD body.
2036 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
2037 messages, being instead replaced with the corresponding function name.
2038 * bug fix: don't derive overly complex unions of numeric types for arithmetic
2039 operators. (lp#309448)
2041 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
2042 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
2043 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
2044 * enhancement: ALLOCATION-INFORMATION also provides the page the object
2046 * enhancement: default dynamic-space size can be configured at build-time
2047 without touching source, using the --dynamic-space-size argument to make.sh.
2048 * enhancement: DESCRIBE recognizes symbols naming optimization policy
2049 qualities, and mentions ALWAYS-BOUND declarations.
2050 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
2052 * enhancement: ASDF has been updated to 2.009.
2053 * enhancement: the system detects known type-erros in calls better,
2054 signalling a full warning about violated proclaimed FTYPEs and violations
2055 of derived FTYPEs within the same file, including self-calls.
2056 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
2057 * optimization: constant-folding exploits numeric and character types, in
2058 addition member types.
2059 * optimization: numeric, character and member types that are inhabited by
2060 exactly one value are tested with EQL.
2061 * optimization: more conditional branches are eliminated during IR1.
2062 Branches are simplified before performing if/if-conversion, and simple
2063 equivalent branches (that only read the same constant or variable) are
2065 * improvements to the Windows port:
2066 ** change: canonical unparsing form for pathname namestrings now uses / as
2067 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
2068 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
2069 on Windows. (thanks to Kalyanov Dmitry)
2070 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
2072 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
2073 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
2074 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
2075 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
2077 * bug fix: interrupts arriving during CL:OPEN caused an error.
2078 * bug fix: overeager character buffering could cause input to block
2079 spuriously when reading from a pipe (lp#643686)
2080 * bug fix: more efficient timer expiry should avoid starvation on systems
2081 where number of SIGALRMs per second is restricted. (lp#375515)
2082 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
2083 * bug fix: compile-times no longer scale linearly with the size of
2084 quoted lists in source-code. (lp#654289)
2085 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
2086 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
2087 so badly. (lp#654485)
2088 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
2089 an error for eg. STRUCTURE. (lp#458015)
2090 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
2091 (lp#613871, thanks to Roman Marynchak)
2092 * bug fix: more reliable &REST list type derivation. (lp#655203)
2093 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
2094 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
2095 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
2096 also declared NOTINLINE. (lp#655581)
2097 * bug fix: the compiler could attempt to emit constant left shifts of
2098 greater value than n-word-bits. (lp#309063)
2099 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
2100 type information for the function being set. (lp#659220)
2101 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
2102 containing self-calls were recompiled with a new signature, and failed
2103 to warn when a self-call using the old signature was left in. (lp#655126)
2104 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
2105 :DEFAULT when the default external had character size other than 8 bits.
2107 * bug fix: derived types of functions in the same file were implicitly
2108 trusted, leading to potential heap corruption when those function were
2109 defined incompatibly. (lp#657499)
2110 * bug fix: existing ASDF source registries are ignored when building
2111 contribs (lp#659105)
2112 * bug fix: short-form DEFSETF checks that the second argument is a symbol
2113 (lp#655824, thanks to Roman Marynchak)
2114 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
2115 package-lock violation was detected. (lp#660752)
2116 * bug fix: the system can store different docstrings for a single function
2117 under different names. (lp#661631, regression from 1.0.29.24)
2118 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
2119 properly. (lp#384801)
2120 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
2121 of specified length could confuse the type derivation in unsafe code.
2123 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
2124 fork with multiple Lisp threads running is made on every platform,
2125 not just Darwin. (lp#451111)
2126 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
2127 around when core was saved, which could cause undefined behaviour when the
2129 * bug fix: Allow UNTRACE of functions that are no longer defined
2130 (lp#667657, thanks to Attila Lendvai)
2131 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
2132 compile-time warning (lp#664373, thanks to Stas Boukarev)
2134 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
2135 * incompatible change: FD-STREAMS no longer participate in the serve-event
2136 event-loop by default. (lp#316072)
2137 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
2138 affects streams from CL:OPEN.
2139 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
2140 default, but this is liable to change: applications needing serve-event
2141 for socket streams should explicitly request it using :SERVE-EVENTS T
2143 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
2145 * enhancement: CLOS effective method functions and defclass slot typechecking
2146 function now have debug names for use in backtraces and profiles.
2147 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
2149 * enhancement: symbols are printed using fully qualified names in several
2150 error and warning messages which are often associated with package
2151 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
2152 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
2153 thanks to Andrew Golding)
2154 * bug fix: reading /proc files on Linux works. (lp#425199)
2155 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
2157 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
2158 breaking code that tried to write the value of a printer control variable.
2159 (lp#581564, thanks to Stas Boukarev)
2160 * bug fix: WRITE compiler macro did not handle output stream designators
2161 correctly. (lp#598374, thanks to Stas Boukarev)
2162 * bug fix: better availability of names of foreign functions in backtraces
2163 on Linux. (lp#626962, thanks to Stas Boukarev)
2164 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
2165 lp#627581, thanks to Josh Elsasser and Jim Wise)
2166 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
2167 thanks to Josh Elsasser)
2168 * bug fix: using aliases for builtin classes as defmethod specializers
2169 without adding DEFTYPEs for them works. (lp#618387)
2170 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
2172 * bug fix: legally dynamic-extent lists and vectors used as
2173 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
2174 * bug fix: inline-expansion creating references to dead lambda-variables
2175 (lp#454681, thanks to Alexey Dejneka)
2176 * bug fix: better error message for bogus numerical arguments to RANDOM.
2177 (lp#598986, thanks to Stas Boukarev)
2178 * bug fix: the compiler occasionally inlined references from incompatible
2179 environments occurs. (lp#308951)
2180 * bug fix: the compiler threw an error when trying to compile a local
2181 function (labels or flet) known to take a specialized complex argument.
2182 (not in launchpad, reported by sykopomp in #lispgames)
2183 * bug fix: package-locks failed to protect against compile-time effects of
2184 DEFUN when the symbol previously had a macro definition. (lp#576637)
2185 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
2186 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
2187 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
2188 * bug fix: evaluation in debugger REPL works using the global context when
2189 in frames that do not have sufficient debug information.
2190 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
2192 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
2194 * bug fix: interrupt taking longer than the requested period caused SLEEP
2195 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
2197 changes in sbcl-1.0.42 relative to sbcl-1.0.41
2199 ** Cross-compilation host is now specified to make.sh using
2200 command-line argument --xc-host=<command> instead of a positional
2201 argument. (thanks to Daniel Herring)
2202 ** Install location can be specified to make.sh using command-line
2203 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
2204 * optimization: The default implementation of
2205 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
2206 * enhancement: Explicit memory barrier operations are now available for use
2207 by multithreaded code. See documentation for details.
2208 * enhancement: Experimental support for threading on Linux/PPC.
2209 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
2210 * bug fix: EXPT signals an error if first argument is a zero and second
2211 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
2212 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
2213 (lp#576594, thanks to Roman Marynchak)
2214 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
2215 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
2217 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
2218 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
2219 cached, leading to many fewer expensive calls to
2220 COMPUTE-APPLICABLE-METHODS.
2221 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
2222 CLASS argument, search for and call an appropriate optimized ctor function
2224 * bug fix: WRITE always returns the correct value.
2226 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
2227 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
2228 * bug fix: Name conflicts between symbols passed as arguments to a single
2229 call to IMPORT no longer add multiple symbols with the same name to the
2230 package (detectable via DO-SYMBOLS).
2231 * bug fix: support building without the dlshim on darwin x86 and x86-64
2233 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
2235 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
2236 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
2238 * bug fix: linkage-table entries on PPC now no longer overflow their
2239 space allocation (potentially causing crashes if they are written out
2241 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
2242 platforms, preventing the GC from seeing stale pointers on the control
2243 stack in subsequent GCs (which would, and does, break invariants).
2244 * bug fix: 32-bit unicode external formats now work on big-endian systems.
2245 * bug fix: Literal characters with code points greater than about 32767
2246 now work on PPC UNICODE builds.
2247 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
2248 high order bits are explicitly cleared out. In some contrived situations,
2249 this could lead to wrong results in mixed real/complex float arithmetic.
2250 * bug fix: Fix function/macro redefinition warnings when building with
2251 clisp. (lp#576787, thanks to Josh Elsasser)
2252 * new platform: experimental support for ppc/openbsd (thanks to Josh
2254 * bug fix: Floating-point traps now work on ppc/linux.
2256 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
2257 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
2258 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
2259 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
2260 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
2261 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
2262 SB-THREAD:GRAB-MUTEX.
2263 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
2264 contain additional data structures and tools for concurrent programming;
2265 at the moment it contains a lock-free queue, and a lock-free mailbox
2267 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
2268 GET-MUTEX but takes &key rather than &optional parameters. Also added
2269 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
2271 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
2272 SB-THREAD:WAIT-ON-SEMAPHORE.
2273 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
2275 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
2276 conditions to defer the deadline for forever.
2277 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
2279 * enhancement: errors from NO-APPLICABLE-METHOD and
2280 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
2281 generic function call.
2282 * enhancement: SB-BSD-SOCKET improvements
2283 ** sockets and socket streams now have a more informative printed
2284 representation based on the corresponding SOCKET-NAME and
2286 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
2288 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
2289 CL:CLOSE when appropriate, and no longer disassociates the stream
2290 from the socket if close failed. (lp#543951)
2291 * improvements to the instrumenting profiler
2292 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
2293 ** optimization: counters no longer use locks for the overflow mode.
2294 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
2295 incurred an off-by-one miscount.
2296 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
2297 * enhancement: improved DEFMETHOD pretty-printing.
2298 * enhancement: perform range reduction when arguments are too large for
2299 x87's transcendentals (instead of returning 0). (lp#327192)
2300 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
2301 some of CL-PPCRE's macros. (lp#570079)
2302 * enhancement: our machine code is slightly less hostile to valgrind on
2304 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
2305 to Robert Swindells and Aleksej Saushev)
2306 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
2307 * bug fix: a rare case of startup-time page table corruption.
2308 * bug fix: a semaphore with multiple waiters and some of them unwinding due
2309 to timeouts could be left in an inconsistent state.
2310 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
2311 * bug fix: misoptimization of multiplication by one in
2312 (SB-C::FLOAT-ACCURACY 0) policies.
2313 * bug fix: miscounts in SB-PROFILE.
2314 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
2315 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
2316 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
2317 up itself" (March 2010) for further details.
2318 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
2319 against length of the list if the element is found before the specified
2320 END is reached. (thanks to Alec Berryman, lp#554385)
2321 * bug fix: errors signalled during package graph modification no longer
2322 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
2323 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
2324 :SB-DOC feature. (lp#552564)
2325 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
2326 * bug fix: more robust runtime executable path detection. (lp#375549)
2327 * bug fix: GCD always returns positive values. (lp#413680)
2328 * bug fix: Converting division to multiplication by reciprocal handles
2330 * bug fix: We were too eager in eliding range reduction tests on x87.
2331 The maximal magnitude is 2^63, not 2^64.
2332 * bug fix: Transforms for TRUNCATE don't die when the result is completely
2334 * bug fix: Maybe restore buildability on Alpha.
2335 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
2337 * bug fix: RANDOM-STATE can be printed readably again.
2338 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
2339 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
2340 types) could result in type mismatches during compilation.
2342 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
2343 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
2344 stack frame thrown from.
2345 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
2346 compiler optimization qualities inside dynamic extent of its body.
2347 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
2348 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
2350 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
2351 constraint propgation, allowing better compilation eg. when used to
2352 access structures with WITH-SLOTS. (lp#520366)
2353 * optimization: the compiler is now more aware of the type of the underlying
2354 storage vector for multidimensional simple arrays resulting in better code
2355 for accessing such arrays.
2356 * optimization: passing NIL as the environment argument to TYPEP no longer
2357 inhibits optimizing it. (lp#309788)
2358 * optimization: more efficient register usage when handling single-float
2359 arguments on x86-64. (thanks to Lutz Euler)
2360 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
2361 pre-allocated temporary vectors. (lp#496249)
2362 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
2363 in :INITIAL-CONTENTS. (lp#523612)
2364 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
2365 functions. (lp#524707)
2366 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
2367 WITH-SLOTS usages during compilation.
2368 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
2369 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
2370 all x86oid platforms with :UD2-BREAKPOINTS target feature.
2371 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
2372 instruction (tested on x86oid linux with ud2-breakpoints).
2373 * bug fix: slam.sh now works on win32.
2374 * bug fix: better differences of numeric types. (lp#309124)
2375 * bug fix: arrays declared intersection and union types can have their
2376 upgraded element type derived. (lp#316078)
2377 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
2378 threads started during profiling. (lp#472499)
2379 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
2381 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
2382 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
2383 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
2384 values instead of signaling an error. (lp#309093)
2385 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
2387 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
2388 declarations (lp#497321)
2389 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
2390 and failed to detect circular lists (lp#452008)
2391 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
2393 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
2394 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
2395 due to it, so that handlers can run.
2396 * bug fix: reparsing undefined types if they have become defined since
2397 parsing. (lp#309128)
2398 * bug fix: missing &REST type in a proclamation for a function with both
2399 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
2400 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
2401 expanded calls (lp#542174)
2402 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
2403 than just at toplevel form.
2405 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
2406 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
2407 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
2408 but work on type specifiers.
2409 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
2410 to name a type specifier.
2411 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
2412 specifier is valid where "valid" basically means "would be accepted as
2413 second argument of TYPEP".
2414 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
2415 returns the function's declared, or derived FTYPE.
2416 * new feature: SB-POSIX now supports accessing the d_ino member of
2417 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
2418 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
2419 provide for seeding a RANDOM-STATE object with user-provided data or
2420 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
2421 attempt to initialize the returned state from the operating system's
2422 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
2423 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
2424 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
2425 * bug fix: Fix grammar and style issues for the docstrings of
2426 printer-related variables and functions. (Thanks to mon_key; launchpad
2428 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
2430 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
2431 in a row even though a handler defered the deadline long into the
2433 * bug fix: A deadline handler was run without interrupts enabled for a
2434 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
2435 in infinitely spinning, non-killable threads.
2436 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
2437 before reaching the erring stack frame.
2438 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
2439 real power. (launchpad bug lp#525949)
2440 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
2441 GENCGC platforms. (launchpad bug lp#529014)
2442 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
2443 (launchpad bug lp#525916)
2444 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
2445 (Thanks to Robert Goldman)
2447 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
2448 * optimization: ROUND with a single single-float or double-float argument
2449 is properly inlined when possible.
2450 * optimization: Slightly better code is generated for integer<->float
2451 conversions and for single-float<->double-float conversions on x86-64.
2452 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
2453 code for 32-bit and 64-bit rotations on x86-64.
2454 * bug fix: The install script changes the ownership of directories as well
2455 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
2456 launchpad bug lp#508485)
2457 * bug fix: TRUNCATE with a single single-float or double-float argument is
2458 properly inlined when possible. (launchpad bug lp#489388)
2459 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
2460 no longer causes a compiler error on x86 and ppc.
2461 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
2462 always relative to *READTABLE* rather than the passed argument.
2464 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
2465 * minor incompatible change: threading support is now enabled by default
2467 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
2469 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
2470 are now caught and reported just like errors during macroexpansion.
2471 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
2472 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
2473 * enhancement: ASDF systems can now depends on SB-QUEUE.
2474 * fixes and improvements related to Unicode and external formats:
2475 ** bug fix: error handling and restart usage in the ucs-2 external format
2477 ** there is now an implementation of the ucs-4 external format.
2478 ** the utf-16 and utf-32 external formats are supported.
2479 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
2480 in the environment. setenv() and unsetenv() are also provided. (reported by
2481 Fare Rideau; launchpad bug lp#460455)
2482 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
2483 loading. This ensures sensible errors for .FASL files from other
2484 implementations on case-insensitive filesystems. (reported by Willem
2485 Broekema; launchpad bug lp#489417)
2486 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
2487 Willem Broekema; launchpad bug lp#489698).
2488 * bug fix: some minor code rearrangements to reenable warning-free building
2489 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
2490 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2492 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2495 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2496 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2497 * improvement: support O_LARGEFILE access to files larger than 2GB on
2498 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2499 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2500 definitions for methods specializing on the passed class itself.
2501 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2502 definitions for methods specializing on the passed class itself, or on
2504 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2505 about itself during the build (e.g. for M-? in Slime), if this flag is
2506 enabled in customize-target-features.lisp. This will increase the core
2507 size by about 5-6mb, though, so it's mostly interesting to SBCL
2509 * new feature: various GENCGC tuning parameters have been experimentally
2510 documented and exported from SB-EXT. See documentation for details.
2511 * fixes and improvements related to Unicode and external formats:
2512 ** the Unicode character database has been upgraded to the
2513 Unicode 5.2 standard, giving names and properties to a number of new
2514 characters, and providing a few extra characters with case
2516 ** improvement: restarts for providing replacement input/output on coding
2517 errors for fd-stream external formats.
2518 ** improvement: where :<encoding> is a keyword corresponding to an
2519 external format the system supports, it is now possible to specify
2520 (:<encoding> :replacement <character>) as an external format which will
2521 automatically substitute <character> on encoding or decoding errors for
2522 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2524 ** improvement: the file streams underlying the standard streams (such as
2525 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2526 which uses the replacement mechanism to handle encoding errors,
2527 preventing various infinite error chains and unrecoverable I/O
2529 ** minor incompatible change: the utf-8 external format now correctly
2530 refuses to encode Lisp characters in the surrogate range (char-codes
2531 between #xd800 and #xdfff).
2532 ** fix a typo preventing conversion of strings into octet vectors
2533 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2535 ** fix a bug in the octet multibyte handling of decoding errors and the
2536 USE-VALUE restart. (launchpad bug lp#314939)
2537 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2538 restart on fd-stream decoding errors.
2539 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2540 error is near the end of file.
2541 ** fix a double-error case in unibyte octet conversions, when the first
2542 use of USE-VALUE is ignored.
2543 ** fix bugs in handling of undefined code points in unibyte encodings.
2544 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2545 streams after an UNREAD-CHAR.
2546 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2547 object is allocated in a boxed region of dynamic space.
2548 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2549 fork with multiple Lisp threads running is made, instead of going
2550 ahead with unpredictable consequences. (reported by Leslie Polzer)
2551 * bug fix: uses of slot accessors on specialized method parameters within
2552 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2553 error while finalizing the class. This fix may cause classes with slot
2554 accessors to be finalized later than previously. (reported by Lars Rune
2555 Nøstdal; launchpad bug lp#473699)
2556 * bug fix: restore buildability on the MIPS platform. (regression from
2557 1.0.30.38, reported by Samium Gromoff)
2558 * bug fix: inspecting closures is less likely to fail with a type error.
2559 * bug fix: no timer starvation when setting the system clock back.
2560 (launchpad bug lp#460283)
2561 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2562 standard pprint dispatch table as specified by CLHS.
2563 * bug fix: give CLISP a hint about a type declaration to enable it to build
2564 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2566 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2567 (reported by Attila Lendvai; launchpad bug lp#310132)
2568 * bug fix: distinguish in type specifiers between arrays that might be
2569 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2570 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2571 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2572 * bug fix: setting the value of a symbol-macro within a method in the
2573 presence of type declarations works properly again. (reported by Iban
2574 Hatchondo; launchpad bug lp#485019)
2576 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2577 * optimization: faster FIND and POSITION on strings of unknown element type
2578 in high SPEED policies. (thanks to Karol Swietlicki)
2579 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2581 * improvement: better error signalling for bogus parameter specializer names
2582 in DEFMETHOD forms (reported by Pluijzer)
2583 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2585 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2587 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2588 removes previous default initargs (reported by Lars Rune Nøstdal and
2590 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2591 lambda-lists. (reported by Peter Seibel)
2592 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2593 correctly when starting from an executable core without saved runtime
2594 options (reported by Faré Rideau, thanks to Zach Beane)
2595 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2596 an optimization note instead. (reported by Martin Cracauer)
2597 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2598 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2599 new process group if it doesn't need to share stdin with the sbcl
2600 process. (thanks to Leslie Polzer)
2601 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2602 (reported by Stanislaw Halik)
2604 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2605 * improvement: stack allocation is should now be possible in all nested
2606 inlining cases: failure to stack allocate when equivalent code is manually
2607 open coded is now considered a bug.
2608 * improvements related to Unicode:
2609 ** the Unicode character database has been upgraded to the
2610 Unicode 5.1 standard, giving names and properties to a number of new
2611 characters, and providing a few extra characters with case
2613 ** the system now recognizes and produces names for Unicode Hangul
2614 syllable characters.
2615 ** the EBCDIC-US external-format is now supported for octet operations
2616 (as well as for stream operations).
2617 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2618 be used to output toplevel compile-time effects into a separate .CFASL
2620 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2621 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2623 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2625 * optimization: division of floating point numbers by constants uses
2626 multiplication by reciprocal when an exact reciprocal exists.
2627 * optimization: multiplication of single- and double-floats floats by
2628 constant two has been optimized.
2629 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2630 sufficient type information is available. (thanks to Leslie Polzer)
2631 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2632 known structure objects are as efficient as defstruct generated accessors.
2633 * optimization: unused vector creation can now be optimized away.
2634 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2635 * improvement: a STYLE-WARNING is signalled when a generic function
2636 clobbers an earlier FTYPE proclamation.
2637 * improvement: the compiler is able to track the effective type of
2638 generic function across method addition and removal even in the
2639 absence of an explicit DEFGENERIC.
2640 * improvement: DESCRIBE now reports on symbols naming undefined
2641 but assumed or declared function as well.
2642 * improvement: recompilation of systems using SB-GROVEL now works
2643 (thanks to Leslie Polzer)
2644 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2645 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2647 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2648 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2649 well as user defined declaration names.
2650 ** VARIABLE-INFORMATION is now aware of alien variables.
2651 * improvement: improved address space layout on OpenBSD (thanks to Josh
2653 * improvement: pretty-printing of various Lisp forms has been improved
2654 (thanks to Tobias Rittweiler)
2655 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2656 unused were deleted in safe code. (reported by John Fremlin)
2657 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2659 * bug fix: some out-of-line array predicates were missing (reported by
2661 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2663 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2664 (thanks to Larry D'Anna)
2665 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2666 as well. (reported by Josh Elsasser)
2667 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2668 leading to possible attempts to delete the same file twice. See docstring
2669 on DELETE-FILE for details. (reported by John Fremlin)
2670 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2671 designator argument, rather than its truename. (reported by Luis
2673 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2674 information about some array types. (thanks to Luis Oliveira)
2675 * bug fix: moderately complex combinations of inline expansions could
2676 be miscompiled if the result was declared to be dynamic extent.
2677 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2678 form (+ <variable> <integer>) were miscompiled under certain
2680 * bug fix: in some cases no compiler note about failure to stack allocate
2681 was emitted, even if the objects were in fact heap allocated.
2682 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2683 allocation could cause objects users might reasonably expect to
2684 be heap allocated to be stack allocated.
2685 * bug fix: DESCRIBE signalled an error for generic functions under
2686 certain circumstances. (thanks to Leslie Polzer)
2687 * bug fix: Fixed spelling of an error message.
2689 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2690 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2691 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2692 of SB-THREAD:THREAD-ERROR-THREAD.
2693 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2694 * new feature: docstrings for local and anonymous functions are no longer
2695 discarded. (thanks to Leslie Polzer)
2696 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2697 values in other threads.
2698 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2699 about object allocation.
2700 * optimization: division of a real float by a complex float is implemented
2701 with a specialised code sequence.
2702 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2703 keywords is an order of magnitude faster.
2704 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2705 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2706 methods, and similarly for non-standard metaclass classes as long as there
2707 are no methods additional on MAKE-INSTANCE.
2708 * optimization: more efficient type-checks for FIXNUMs when the value
2709 is known to be a signed word on x86 and x86-64.
2710 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2711 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2713 * optimization: compiler is smarter about delegating argument type checks to
2715 * optimization: several character functions are now compiled somewhat more
2716 efficiently. (reported by Lynn Quam)
2717 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2718 * improvement: less unsafe constant folding in floating point arithmetic,
2719 especially for mixed complex/real -float operations.
2720 * optimization: constant double and single floats are stored in native
2721 unboxed format on x86[-64].
2722 * optimization: smarter code for arithmetic operations with constant floats,
2723 complex floats, or integers on x86[-64].
2724 * optimization: smarter code for conjugate/multiplication of float complexes
2725 and abs/negate of floats on x86-64.
2726 * optimization: more efficient complex float and real float operations on
2728 * improvement: complex float division is slightly more stable.
2729 * improvement: DESCRIBE output has been reworked to be easier to read and
2730 contains more pertinent information.
2731 * improvement: failure to provide requested stack allocation compiler notes
2732 provided in all cases (requested stack allocation not happening without a
2733 note being issued is now considered a bug.)
2734 * bug fix: SB-POSIX exports the documented types and functions
2735 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2736 types. (reported by "abhi")
2737 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2738 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2739 (thanks to Paul Khuong)
2740 * bug fix: looping around HANDLER-CASE could silently consume stack space
2741 on each iteration. (reported by "foobar")
2742 * bug fix: better error signalling when calls to functions seeking elements
2743 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2744 (reported by Tobias Rittweiler)
2745 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2746 directory components now works as it used to. (various prolems reported by
2747 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2748 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2749 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2750 * bug fix: bogus undefined variable warnings from fopcompiled references to
2751 global variables. (thanks to Lars Rune Nøstdal)
2752 * bug fix: foreign function names should now appear in backtraces on
2753 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2754 * bug fix: SETF compiler macro documentation strings are not discarded
2756 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2757 (thanks to Alex Plotnick)
2758 * bug fix: SLEEP accepts large integer arguments, truncating them to
2759 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2760 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2761 * bug fix: compiler notes for expensive slot type checks could be emitted
2762 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2764 changes in sbcl-1.0.29 relative to 1.0.28:
2765 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2766 https://bugs.launchpad.net/sbcl
2767 Bugs can be reported directly there, or by sending email to
2768 sbcl-bugs@lists.sourceforge.net
2769 (no subscription required.)
2770 * minor incompatible change: under weak type checking policy integer
2771 types are weakened less aggressively.
2772 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2773 allowed to return, which causes SBCL to quit with exit status 0. Previously
2774 if the function returned with a small integer return value, that value
2775 was accidentally reused as the exit status.
2776 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2777 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2778 :HASH-FUNCTION argument. Refer to user manual for details.
2779 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2781 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2782 microseconds since the Unix epoch on all platforms.
2783 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2784 allows the compiler to safely elide boundedness checks for special
2786 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2787 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2788 efficiency measure for threaded platforms, but also valueable in
2790 * new feature: UNC pathnames are now understood by the system on Windows.
2791 * optimization: the compiler uses a specialized version of FILL when the
2792 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2794 * optimization: accesses to potentially non-simple arrays where element type
2795 is known are 50% faster.
2796 * optimization: compiler now generates faster array typechecking code.
2797 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2799 * optimization: multidimensional array accesses in the absence of type
2800 information regarding array rank are approximately 10% faster due to
2801 open coding of ARRAY-RANK.
2802 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2803 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2805 * optimization: result of call to VECTOR can now be stack allocated.
2806 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2807 as long as the resulting array is one-dimensional and has a known
2808 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2809 length of the list matches the known length of the vector does not
2810 allocate the list as an intermediate step. Ditto for VECTOR and simple
2812 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2813 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2814 known element type, and is known to be simple and one dimensional.
2815 * improvement: SBCL now emits a compiler note where stack allocation was
2816 requested but could not be provided (not in all cases, unfortunately)
2817 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2818 * improvement: pretty-printing loop has been implemented properly. (thanks
2819 to Tobias Rittweiler)
2820 * documentation: CLOS slot typechecing policy has been documented.
2821 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2822 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2823 pointer, leading to memory faults. (thanks to Bart Botta)
2824 * bug fix: better floating point exception handling on x86/OpenBSD.
2825 (thanks to Josh Elsasser)
2826 * bug fix: exit status from QUIT when called under --script was lost
2827 (reported by Hubert Kauker)
2828 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2829 same implementation of FILL to initialize the array, even if a more
2830 efficient one was available (reported by Stas Boukarev, thanks to
2832 * bug fix: potential miscompilation of array stack allocation on x86 and
2833 x86-64. (reported by Time Tossavainen)
2834 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2835 result in their subforms being treated as top level forms. (reported by
2837 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2838 than a machine register could leave garbage in the high bits of the
2839 result register (bug 316325).
2840 * bug fix: disable address space randomization Linux/x86-64 as well,
2841 not just x86-64. (reported by Ken Olum)
2842 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2843 generate incorrect code.
2844 * bug fix: #201; type inference for CONS and ARRAY types could derive
2845 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2846 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2847 could not be assigned to or bound with PROGV. (reported by Lorenz
2849 * bug fix: the value of CL:- in the inspector was the previous expression
2850 evaluated rather than the expression being evaluated.
2851 * bug fix: constants can no longer be locally declared special.
2852 * bug fix: signals delivered to threads started from foreign land (read:
2853 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2854 thread by blocking all signals and resignalling.
2855 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2856 from :INITFORM, if any.
2858 changes in sbcl-1.0.28 relative to 1.0.27:
2859 * a number of bugs in cross-compilation have been fixed, with the ultimate
2860 result that building under (at least) clisp should be much more reliable.
2861 * minor incompatible changes: echo-streams now propagate unread-char to the
2862 underlying input stream, and no longer permit unreading more than one
2864 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2865 frames, allowing for instance more reliable backtraces.
2866 * improvement: the debugger REPL can now reference lexical variables
2867 by name directly for code compiled with (DEBUG 3).
2868 * improvement: errors from malformed declarations now have better source
2869 paths associated with them. (thanks to Tobias Rittweiler)
2870 * optimization: faster local calls on x86/x86-64
2871 * bug fix: some error messages for out-of-bound array indexes confused the
2872 index and the bound. (thanks to Stas Boukarev)
2873 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2875 * bug fix: running regressions tests in shells without OSTYPE set now works.
2876 (reported by Harald Hanche-Olsen)
2877 * bug fix: more robust static space exhaustion signalling from
2878 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2879 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2880 docstring away instead of storing it under names such as (LAMBDA (X)).
2881 (reported by Leslie Polzer)
2882 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2883 (thanks to Ole Arndt for the patch)
2884 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2885 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2886 potentially-invalid effective methods in its cache.
2887 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2888 instances as well (thanks to Paul Khuong)
2889 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2890 SB-POSIX:WAITPID and their C equivalents.
2891 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2893 changes in sbcl-1.0.27 relative to 1.0.26:
2894 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2895 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2896 * improvement: the system either recovers from stack exhaustion or dies
2897 properly as opposed to leaving the user uncertain of whether the handler
2898 trampled on some random memory next to the stack or having to rely on
2899 --lose-on-corruption (which is still a good idea to use in production
2900 because stack exhaustion can happen in signal handlers which will likely
2902 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2903 1.0.25.37, reported by Harald Hanche-Olsen)
2904 * bug fix: work around signal delivery bug in darwin (regression from
2905 1.0.25.44, reported by Sidney Markowitz)
2906 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2908 changes in sbcl-1.0.26 relative to 1.0.25:
2909 * incompatible change: an interruption (be it a function passed to
2910 INTERRUPT-THREAD or a timer function) runs in an environment where
2911 interrupts can be enabled. The interruption can use
2912 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2913 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2914 potentially running out of stack. Keep in mind that in the absence
2915 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2916 acquiring a lock can enable interrupts.
2917 * incompatible change: GC-OFF and GC-ON are removed, as they were
2918 always unsafe. Use WITHOUT-GCING instead.
2919 * new feature: runtime option --disable-ldb
2920 * new feature: runtime option --lose-on-corruption to die at the
2921 slightest hint of possibly non-recoverable errors: running out of
2922 memory, stack, alien stack, binding stack, encountering a memory
2923 fault, etc. In the absence of --lose-on-corruption a warning is
2925 * enhancement: detect binding stack exhaustion
2926 * enhancement: detect alien stack exhaustion on x86/x86-64
2927 * improvement: generally more stable and reliable interrupt handling
2928 * improvement: there is a per thread interruption queue,
2929 interruptions are executed in order of arrival
2930 * improvement: a repeating timer reschedules itself when the it has
2931 finished, but expiration times are spaced equally. If an
2932 expiration time is in the past it will trigger after a short grace
2933 period that may give a chance to other things to run.
2934 * optimization: slightly faster gc on multithreaded builds
2935 * optimization: faster WITHOUT-GCING
2936 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2937 important locks so that the debugger/handler doesn't produce
2938 recursive errors or deadlock.
2939 * bug fix: real-time signals are not used anymore, so no more
2940 hanging when the system wide real-time signal queue gets full.
2941 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2943 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2944 * bug fix: fix random memory faults related to interrupts on alpha
2945 * bug fix: fix random memory faults related to interrupts on sparc
2946 * bug fix: fix deadlocks related to starting threads
2947 * bug fix: fix deadlines on locks on futex platforms
2948 * bug fix: restore errno in signal handlers
2949 * bug fix: fix deadlocks related to hash tables
2950 * bug fix: fix deadlocks in pcl
2952 changes in sbcl-1.0.25 relative to 1.0.24:
2953 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2954 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2955 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2956 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2957 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2958 better name and does not return values so stale on multiprocessor systems.
2959 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2961 * improvement: unithread builds keep track of MUTEX-VALUE.
2962 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2963 stream anymore making it thread safe to have a concurrent reader and
2964 a writer, for instance, in a pipe.
2965 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2966 arguments, making compiler-macros for SETF-functions able to inspect
2967 their constant arguments.
2968 * improvement: COMPILE-FILE reports times with millisecond accuracy
2969 (thanks to Luis Oliveira)
2970 * optimization: CHAR-CODE type derivation has been improved, making
2971 TYPEP elimination on subtypes of CHARACTER work better. (reported
2972 by Tobias Rittweiler, patch by Paul Khuong)
2973 * bug fix: setting alien structure fields of type struct by value now
2974 computes the right offset for the memory copy.
2975 * bug fix: compilation problem involving inlined calls to aliens with
2976 result type VOID. (reported by Ken Olum)
2977 * bug fix: #235a; sequential inline expasion in different policies no
2978 longer reuses the functional from the previous expansion site.
2979 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2980 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2981 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2982 cause an implied type redefinition. Regression from 1.0.21.29.
2983 * bug fix: sign-extension of small signed return values now works with C
2984 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2985 * improvements to the Windows port:
2986 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2987 Westfold, thanks to Rudi Schlatte)
2989 changes in sbcl-1.0.24 relative to 1.0.23:
2990 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2991 vector of a multidimensional SIMPLE-ARRAY.
2992 * new feature: the system now signals a continuable error if standard
2993 readtable modification is attempted. (thanks to Tobias Rittweiler)
2994 * new feature: DIRECTORY has been extended with a non-standard keyword
2995 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2996 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2997 has been robustified and documented better. (thanks to Robert Goldman)
2998 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2999 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
3000 * tradeoff: constant FORMAT control strings are now compiled unless
3001 SPACE > SPEED (previously only when SPEED > SPACE.)
3002 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
3004 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
3006 * bug fix: lexical type declarations are now correctly reported by
3007 SB-CLTL2. (reported by Larry D'Anna)
3008 * bug fix: STRING-TO-OCTETS did not handle :START properly when
3009 using UTF-8 as external format. (thanks to Luis Oliveira)
3010 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
3011 are signalled correctly. (thanks to Stas Boukarev)
3012 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
3013 designator. (thanks to Tobias Rittweiler)
3014 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
3015 designator, and returns T instead of the function. (thanks to
3017 * bug fix: direct superclasses of STANDARD-CLASS and
3018 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
3019 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
3020 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
3021 when no class with the named slot yet exists no longer causes a
3022 compile-time style-warning.
3023 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
3024 in safe code. (reported by Didier Verna)
3025 * bug fix: #430; nested structure constructors can stack allocate.
3026 * bug fix: on some 64-bit platforms dynamic space size was truncated
3027 to #xffff0000 bytes. (reported by Benjamin Lambert)
3028 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
3029 REPL unusable. (reported by Daniel Herring)
3030 * bug fix: return values of READ-SEQUENCE did not take :START into
3031 account on file streams, regressions since 1.0.12.22. (reported by
3032 Thomas Russ, patch by Paul Khuong)
3033 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
3034 method specializer used to confuse permuation vector optimization.
3035 * bug fix: system inserted bogus implicit type declarations for local
3036 special variables in DEFMETHOD bodies.
3037 * bug fix: #354; duplicated frames in backtraces due to
3038 non-tail-call-optimized XEPs to functions with return type NIL
3040 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
3041 initializes structure object slots according to DEFSTRUCT initforms,
3042 and DEFSTRUCT forms :INCLUDEind structure classes defined using
3043 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
3044 (reported by Bruno Haible and Stephen Wilson)
3045 * bug fix: #395; fill-pointer output streams used now support
3046 element-type BASE-CHAR as well.
3047 * bug fix: compiler error when attempting to derive return value of
3048 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
3050 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
3052 * bug fix: Mac OS X binaries should now be portable between Leopard
3055 changes in sbcl-1.0.23 relative to 1.0.22:
3056 * enhancement: when disassembling method functions, disassembly
3057 for the associated fast function is also produced.
3058 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
3060 * optimization: printing with *PRINT-PRETTY* true is now more
3061 efficient as long as the object being printed doesn't require
3062 special handling by the pretty printer.
3063 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
3064 now interact correctly with type declarations.
3065 * partial bug fix: PCL detects infinite recursion during wrapper
3066 validation. (thanks to Attila Lendvai)
3067 * bug fix: #426; nested function calls are inlined properly.
3068 Previously if FOO was an inline function, in calls of the form
3069 (FOO (FOO ...)) the outer call was not inlined.
3070 * bug fix: long long arguments passed in registers to alien
3071 functions on PowerPC Linux and NetBSD are now handled correctly
3072 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
3074 changes in sbcl-1.0.22 relative to 1.0.21:
3075 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
3076 for the shared object in the current directory, but passes the native
3077 namestring of the designated pathname to the operation system's shared
3078 object loading function as-it.
3079 * minor incompatible change: --disable-debugger toplevel option now takes
3080 effect before processing of initialization files and --eval or --load
3082 * new feature: new commandline argument: --script, which supports
3083 shebang lines. See documentation for details. (based on work by
3085 * new feature: SAVE-LISP-AND-DIE can save current values of
3086 --dynamic-space-size and --control-stack-size in the executable core,
3087 causing it to skip normal runtime option processing. See documentation
3088 for details. (thanks to Zach Beane)
3089 * enhancement: inoccous calls to EVAL or generic functions dispatching
3090 on subclasses of eg. STREAM no longer cause compiler notes to appear.
3091 * enhancement: the system no longer resignals errors from --load and
3092 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
3093 associated with the original error to be lost. (thanks to Ariel
3095 * enhancement: :DONT-SAVE keyword argument has been added to
3096 LOAD-SHARED-OBJECT for controlling interaction with
3097 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
3098 the effects of an earlier LOAD-SHARED-OBJECT call.
3099 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
3100 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
3101 provided. (reported by Cedric St-Jean)
3102 * bug fix: circularity handling in the reader did not treat raw
3103 structure slots correctly. (reported by Cedric St-Jean)
3104 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
3105 file descriptors when there were none.
3106 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
3107 was broken. (reporteed by Willem Broekema)
3108 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
3109 pathnames without a directory.
3110 * bug fix: COMPILE-FILE did not warn about undefined variable
3111 references at toplevel, and LOAD of the resulting fasl did
3112 not signal an error.
3113 * bug fix: functions with non-required arguments used to end up with
3114 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
3115 * bug fix: redefining a function with non-required arguments didn't
3116 update the system's knowledge about its call signature properly.
3117 * bug fix: fixed #431; incompatible alien record type redefinitions
3118 are detected and handled. (reported by Neil Haven)
3119 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
3120 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
3122 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
3123 after alien stack frames.
3124 * bug fix: strings passed to mk{s,d}temp lacked null termination
3126 changes in sbcl-1.0.21 relative to 1.0.20:
3127 * new feature: the compiler is able to track the effective type of a
3128 generic function across method addition and removal.
3129 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
3130 appropriately typed structure slots without locking.
3131 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
3132 information like those gathered by TIME using a programming-friendly
3134 * new feature: TIME reports time taken even if the form performs a
3135 non-local transfer of control.
3136 * enhancement: reduced conservativism on GENCGC platforms: on
3137 average 45% less pages pinned (measured from SBCL self build).
3138 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
3139 mutate constant symbols or violate declaimed type of the symbol.
3140 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
3141 sleeping on the semaphore in heavily contested semaphores.
3142 * bug fix: semaphores and condition variables were not interrupt
3144 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
3145 owned by other threads anymore.
3146 * bug fix: FIND on lists called KEY outside the specified
3147 subsequence. (reported by budden)
3148 * bug fix: LOG doesn't use single-float intermediate results when
3149 given mixed integer and double-float arguments, leading to better
3150 precision. (reported by Bob Felts)
3151 * bug fix: LOG with base zero returned values of inconsistent type.
3153 changes in sbcl-1.0.20 relative to 1.0.19:
3154 * minor incompatible change: OPTIMIZE qualities
3155 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
3156 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
3157 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
3158 * documentation: some slot access efficiency guidelines have been
3159 added to the user manual.
3160 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
3161 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
3162 as ASSOC and MEMEBER.
3163 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
3164 to more efficient EQ-comparison versions more often.
3165 * optimization: enhanced derivation of DOLIST iteration variable type
3167 * optimization: constant folding of simple (LIST ...) forms as DOLIST
3169 * optimization: runtime lookup of function definitions can be
3170 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
3171 * optimization: compiler is able to derive the return type of
3172 (AREF (THE STRING X) Y) as being CHARACTER.
3173 * optimization: CLRHASH on empty hash-tables no longer does pointless
3174 work. (thanks to Alec Berryman)
3175 * optimization: REPLACE deftransforms don't punt when :START1 or
3177 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
3178 no longer emits a code deletion note. (reported by Andrew
3180 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
3181 functions with an odd number of &OPTIONAL arguments, a &REST
3182 argument, and one or more &KEY arguments at the call site.
3183 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
3184 arguments appeared at call sites as well.
3185 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
3186 READ-LINE &co can no longer read from them afterwards. (reported
3188 * bug fix: fixed #427: unused local aliens no longer cause compiler
3189 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
3191 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
3192 alien-stack leakage. (reported by Andy Hefner)
3193 * bug fix: PROGV signals an error when an attempt to violate declared
3194 type of a variable or bind a constant is made.
3195 * bug fix: SET signals an error when an attempt to violate declared
3196 type of a variable is made.
3197 * bug fix: restart computation during the execution of a restart
3198 test function no longer causes infinite recursion. (reported by
3200 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
3201 signals an error. (thanks to Pierre Mai)
3202 * bug fix: EXPORT left symbol unexported in conflict situations.
3203 (thanks to Michael Weber)
3204 * bug fix: correctly handle name conflicts involving CL:NIL.
3205 (thanks to Michael Weber)
3206 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
3207 conflicts arising from USEing package with conflicting symbols
3208 correctly. (thanks to Michael Weber)
3210 changes in sbcl-1.0.19 relative to 1.0.18:
3211 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
3212 warnings that go otherwise unhandled will be muffled if they are
3213 of the type that's the value of this variable.
3214 * optimization: stack allocation is slightly more efficient on x86
3216 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
3217 where a raw slot always is initialized using the initform whose
3218 type is not know sufficiently well a compile-time are now compiled
3219 correctly. (reported by John Morrison)
3220 * bug fix: compiler no longer makes erronous assumptions in the
3221 presence of non-foldable SATISFIES types.
3222 * bug fix: stack analysis missed cleanups of dynamic-extent
3223 arguments in non-let-converted calls to local functions.
3224 * improvements to the Windows port:
3225 ** adjusted address spaces for building on both Win32 and
3226 Win64. (thanks for John Connors)
3227 * fixed some bugs revealed by Paul Dietz' test suite:
3228 ** interval arithmetic during type derivation used inexact integer
3229 to single-float coercions.
3230 ** arithmetic operations involving large integers and single
3231 floats give the same results in compiled and interpreted code.
3232 ** deriving the result type of COERCE no longer signals an error
3233 if the derived type of the second argument is a MEMBER type
3234 containing invalid type specifiers.
3235 ** ADJOIN with constant NIL as second argument works correctly.
3236 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
3238 changes in sbcl-1.0.18 relative to 1.0.17:
3239 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
3240 profiles only the current thread.
3241 * minor incompatible change: changes to SYMBOL-VALUE of constants
3242 defined with DEFCONSTANT now signal an error.
3243 * enhancement: SB-SPROF now has support for wallclock profiling,
3244 and is also able to profile specific threads. REPORT output
3245 has also additional sorting options.
3246 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
3248 * optimization: structure allocation has been improved
3249 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
3250 ** out of line constructors are ~10% faster.
3251 ** inline constructors are ~15% faster.
3252 ** inline constructors are capable of dynamic extent allocation
3253 (generally on x86 and x86-64, in some cases on other platforms
3255 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
3257 * optimization: file compiler is now able to coalesce non-circular
3258 lists, non-base strings, and bit-vectors. Additionally, constants
3259 are never referenced through SYMBOL-VALUE at runtime.
3260 * optimization: code defining methods on PRINT-OBJECT (and other
3261 generic functions in the COMMON-LISP package) now loads faster.
3262 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
3264 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
3265 fasl is now deleted. (reported by Attila Lendvai)
3266 * bug fix: READ-LINE always returned NIL for the last line in files.
3267 (reported by Yoshinori Tahara)
3268 * bug fix: more accurate disassembly annotations of foreign function
3269 calls. (thanks to Andy Hefner)
3270 * bug fix: trimming non-simple strings and non-string string
3271 designators when the there is nothing to trim works properly.
3272 (thanks to James Knight)
3273 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
3274 (thanks to Travis Cross)
3275 * fixed some bugs revealed by Paul Dietz' test suite:
3276 ** NIL is a valid function name (regression at 1.0.13.38)
3277 ** FILL on lists was missing its return value (regression at 1.0.12.27)
3278 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3279 fill pointers properly (regression at 1.0.12.23)
3280 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3281 displacement indices properly (regression at 1.0.12.23)
3283 changes in sbcl-1.0.17 relative to 1.0.16:
3284 * temporary regression: user code can no longer allocate closure
3285 variable storage on stack, due to bug 419 without explicitly
3286 requesting it. Please consult sbcl-devel for advice if you need to
3287 use this feature in the meanwhile.
3288 * new feature: runtime argument --control-stack-size can be used to
3289 adjust thread default control stack size.
3290 * enhancement: improved TIME output
3291 ** all times are reported using the measured accuracy (milliseconds
3292 for real and GC times, microseconds for everything else.)
3293 ** processor cycle counts on x86 and x86-64.
3294 ** interpreted forms are counted for both evaluator modes.
3295 ** number of lambdas converted by the compiler is reported.
3296 ** CPU percentage report (computed from real and total run time.)
3297 ** more comprehensive run time reporting, using a condenced format
3298 ** interperted form, lambda, and page fault counts are omitted
3300 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
3302 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
3303 * optimization: two argument forms of LAST are upto ~10% faster
3304 in normal SPEED policies.
3305 * optimization: NCONC no longer needs to heap cons its &REST list
3306 in normal SPEED policies.
3307 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
3308 to Sidney Markowitz)
3309 * bug fix: UNION and NUNION work with :TEST-NOT once more,
3310 regression since 1.0.9.1. (thanks to Eric Marsden)
3311 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
3312 since 1.0.15.36. (thanks to Paul Khuong)
3313 * bug fix: LAST when always returned the whole list when given a bignum
3314 as the second argument.
3315 * bug fix: dynamic extent allocation of nested lists and vectors
3316 could leak to otherwise accessible parts.
3317 * bug fix: invalid optimization of heap-allocated alien variable
3319 * bug fix: fasl header checking is less vulnerable to different
3320 platform word lengths.
3321 * bug fix: more correct assembler syntax for GNU binutils
3322 2.18.50.0.4 support. (thanks to Marijn Schouten)
3323 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
3325 * bug fix: the fopcompiler can handle LOCALLY forms (with no
3326 declarations) successfully. (reported by Attila Lendvai)
3328 changes in sbcl-1.0.16 relative to 1.0.15:
3329 * minor incompatible change: revert the changes to sb-posix's error
3330 signaling added in 1.0.14.
3331 * minor incompatible change: change PROBE-FILE back to returning
3332 NIL whenever we can't get a truename, as was the case before 1.0.14.
3333 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
3334 inherits from ERROR instead of just CONDITION.
3335 * new feature: SB-INTROSPECT can provide source locations for instances
3336 as well. (thanks to Tobias Rittweiler)
3337 * optimization: binding special variables now generates smaller code
3338 on threaded platforms.
3339 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
3340 and cases where no :TEST is given but the compiler can infer that
3341 the element to search is of type (OR FIXNUM (NOT NUMBER)).
3342 * optimization: better LOGNOT on fixnums.
3343 * optimization: modular arithmetic for a particular requested width
3344 is implemented using a tagged representation unless a better
3345 representation is available.
3346 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
3347 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
3348 for wellformedness and returns a specialized vector. (reported by
3349 Francois-Rene Rideau)
3350 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
3351 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
3352 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
3353 unscheduling timer at the same time as another timer fires.
3354 * bug fix: don't reschedule timers for dead threads.
3355 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
3356 * bug fix: copying output from RUN-PROGRAM to a stream signalled
3357 bogus errors if select() was interrupted.
3358 * enhancement: add support for fcntl's struct flock to SB-POSIX.
3360 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
3361 * enhancement: cleaner backtraces for interactive interrupts, as
3362 well as other cases where the interesting frames used to be
3363 obscured by interrupt handling frames.
3364 * enhancement: untracing a whole package using (UNTRACE "FOO") is
3365 now supported, and tracing a whole package using (TRACE "FOO") now
3366 traces SETF-functions as well.
3367 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
3368 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
3369 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
3370 * unreadably printed representation of hash-tables now includes
3372 * bug fix: partially fixed #188: type propagation from assignments
3373 is now more efficient.
3374 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
3375 'DOUBLE-FLOAT) are not flushable.
3376 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
3377 full address of the object, and none of the tag bits.
3378 * bug fix: readably printing hash-tables now respects other printer
3379 control variables. (reported by Cedric St-Jean)
3380 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
3381 keyword with MAKE-HASH-TABLE.
3382 * bug fix: export SB-POSIX:MKSTEMP.
3383 * bug fix: SORT was not interrupt safe.
3384 * bug fix: XREF accounts for the last node of each basic-block as
3386 * bug fix: MAKE-INSTANCE optimizations interacted badly with
3387 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
3388 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
3389 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
3390 create obsolete instances in the case of redefinition or
3391 obsoletion of a superclass. (thanks to Andy Hefner)
3392 * bug fix: Support for the Alpha architecture has been revived; it had
3393 suffered somewhat from lack of maintenance since sbcl-1.0.
3394 * improvements to the Windows port:
3395 ** The system detects the codepage to use at startup, instead of
3396 using the value from the saved core. (thanks to Kei Suzuki)
3398 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3399 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
3400 (see documentation for details.)
3401 * revived support for OpenBSD (contributed by Josh Elsasser)
3402 * partially fixed bug #108: ROOM no longer suffers from occasional
3403 (AVER (SAP= CURRENT END)) failures.
3404 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
3405 bodies no longer cause a WARNING to be signalled. (reported by
3407 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
3408 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
3409 the bug in TRUNCATE.) (reported by Michael Weber)
3410 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
3411 no samples. (reported by Andy Hefner)
3412 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
3413 no longer appear as (NIL ...) frames in backtraces.
3414 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
3415 is now actually exported from SB-EXT as documented. (reported by
3417 * bug fix: sb-aclrepl now correctly understands how to inspect
3418 single-floats on 64-bit platforms where single-floats are not boxed.
3419 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
3420 yet been finalized. (reported by Levente Meszaros)
3421 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
3422 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
3423 SBCL-specific optimize qualities.
3425 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
3426 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
3427 an executable in the search path, and does so in the child
3428 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
3429 been removed; it can be found in the CVS history, for somebody who
3430 needs that search behavior (see the manual).
3431 * minor incompatible change: compiler policy re. weakening type
3432 checks has changed: now type checks are weakened only if SAFETY < 2
3434 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
3435 unparsing of directory pathnames as files. Analogously,
3436 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
3437 filename to parse into a directory pathname.
3438 * enhancement: implicit generic function creation now signals a
3439 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
3440 users can bind handlers for and muffle around calls to LOAD.
3441 * enhancement: RUN-PROGRAM allows unicode arguments and environments
3442 to be used (using the default stream external format), and allows
3443 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
3444 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
3445 strings and vectors whose element-type or simplicity is not fully
3446 known at compile-time.
3447 * optimization: STRING-TRIM and related functions no longer allocate
3448 a new string when no trimming needs to be performed. These functions
3449 are also faster than before when the input string has been declared
3451 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
3452 * optimization: READ-LINE is significantly faster for files containing
3454 * optimization: non-open coded uses of character comparison operators
3455 (e.g. char=) no longer cons when called with more than one parameter
3456 on platforms supporting dynamic-extent allocation.
3457 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
3458 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
3459 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
3461 * bug fix: some sequence functions elided bounds checking when
3463 * bug fix: too liberal weakening of union-type checks when SPEED >
3465 * bug fix: more bogus fixnum declarations in ROOM implementation
3468 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3469 * new feature: MAKE-HASH-TABLE now experimentally accepts a
3470 :SYNCHRONIZED argument, which makes the hash-table safe for
3471 concurrent accesses (but not iteration.) See also:
3472 SB-EXT:WITH-LOCKED-HASH-TABLE, and
3473 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
3474 * optimization: CONCATENATE on strings is an order of magnitude faster
3475 in code compiled with (> SPEED SPACE).
3476 * optimization: SUBSEQ is ~50% faster on lists.
3477 * bug fix: bug 417 fixed -- source location reporting is now more robust.
3478 * bug fix: SUBSEQ on a list will now correctly signal an error if if
3479 END is smaller then START.
3480 * bug fix: SB-PROFILE will no longer report extra consing for nested
3481 calls to profiled functions.
3482 * bug fix: ROOM implementation had bogus fixnum declarations which
3483 could cause type-errors when calling ROOM on large images.
3484 * bug fix: if file compilation is aborted, the partial fasl is now
3485 deleted, and COMPILE-FILE returns NIL as the primary value.
3486 * bug fix: number of thread safety issues relating to SBCL's internal
3487 hash-table usage have been fixed.
3488 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
3489 be returned from its body when the values were being returned
3490 using unknown-values return convection and the W-P-O was wrapped
3491 inside an UNWIND-PROTECT.
3492 * bug fix: sb-posix should now compile again under Windows, enabling
3493 slime to work again.
3495 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3496 * incompatible change: hash-table accessor functions are no longer
3497 automatically protected by locks. Concurrent accesses on the same hash-table
3498 from multiple threads can give inconsistent results or even corrupt the
3499 hash-table completely. Multi-threaded applications should do their own
3500 locking at the correct granularity. In the current implementation it is
3501 still safe to have multiple readers access the same table, but it's not
3502 guaranteed that this property will be maintained in future releases.
3503 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3504 and will signal an error at runtime.
3505 * enhancement: SB-THREAD package now exports a semaphore interface.
3506 * enhancement: CONS can now stack-allocate on x86 and
3507 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3509 * enhancement: nested lists can now be stack allocated on
3510 platforms providing stack allocation support.
3511 * enhancement: dynamic-extent support has been extended to support
3512 cases where there are multiple possible sources for the stack
3514 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3515 if the mutex is uncontested on Linux.
3516 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3517 as specified by the CLHS. (thanks to Tobias Rittweiler)
3518 * bug fix: NaN comparison now works on x86-64.
3519 * bug fix: CLOSE :ABORT T on a stream with pending output now
3521 * bug fix: instances of non-standard metaclasses using standard
3522 instance structure protocol sometimes missed the slot type checks
3524 * bug fix: known functions can be inlined in high-debug code.
3526 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3527 * minor incompatible change: the MSI installer on Windows no longer
3528 associates .lisp and .fasl files with the installed SBCL.
3529 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3530 on Windows. (thanks to Luis Oliviera)
3531 * new feature: SB-CLTL2 contrib module now implements
3532 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3533 * optimization: scavenging weak pointers is now more efficient,
3534 requiring O(1) instead of O(N) per weak pointer to identify
3535 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3536 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3537 method bodies using constant slot-names when the first argument is
3538 a specializer parameter for the method.
3539 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3540 names, when the class of the instance is a direct instance
3541 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3542 as slow as the constant slot-name case.)
3543 * optimization: member type construction is now O(N) instead
3545 * optimization: UNION and NUNION are now O(N+M) for large
3546 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3548 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3549 now more readable in environments like Slime which display it.
3550 (thanks to Tobias C. Rittweiler)
3551 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3552 was able to infer the correct argument type for the object on which
3553 the CAS operation was being performed.
3554 * bug fix: copy propagation interfered with parallel assignment
3555 semantics in local calls. (reported by Paul Khuong)
3556 * bug fix: the signed modular fixnum shift compiled to wrong code on
3557 x86 and x86-64. (spotted by a slight modification to some of
3560 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3561 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3562 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3563 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3565 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3566 and generic function now print the object identity for anonymous
3567 instances. (thanks to Attila Lendvai)
3568 * enhancement: as an extension to MOP, SBCL now supports SETF of
3569 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3570 (thanks to Attila Lendvai)
3571 * enhancement: sb-cover has an alternate annotation mode which puts
3572 the form annotations at the car of the form, instead of annotating
3573 it completely. The benefit of this mode is that it shows better
3574 which forms were instrumented by the compiler.
3575 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3576 by printer control variables. (reported by Dan Corkill)
3577 * bug fix: system leaked memory when delayed output was performed by
3578 the OS in smaller chunks then expected. (thanks to David Smith)
3579 * bug fix: system leaked memory when file streams were not closed
3581 * bug fix: large objects written to slow streams that were modified
3582 after the write could end up with the modified state written to
3583 the underlying file descriptor.
3584 * bug fix: multiple threads operating in parallel on the same stream
3585 could cause buffer-overflows.
3586 * bug fix: source location information is stored correctly
3587 (broken since 1.0.6). This bug would generally show up as the
3588 Slime debugger highlighting the wrong form when the sldb-show-source
3590 * bug fix: Branch forms are again annotated as branches in the sb-cover
3592 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3593 on x86-64. (reported by Gregory Vanuxem)
3594 * bug fix: EQUALP could return wrong results for structures with raw
3595 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3596 word). (reported by Vjacheslav Fyodorov)
3597 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3600 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3601 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3602 atomic compare-and-swap operations on threaded platforms.
3603 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3604 allows assigning a global minimum value to optimization qualities
3605 (overriding proclamations and declarations).
3606 * enhancement: closed over variables can be stack-allocated on x86
3608 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3610 * optimization: slot definition lookup is now O(1). This speeds up
3611 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3612 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3613 * optimization: ASSOC and MEMBER can now be open-coded for all
3614 combinations of keyword arguments when second argument is constant
3615 and SPEED >= SPACE. In other cases a specialized version is
3617 * bug fix: using obsoleted structure instances with TYPEP and
3618 generic functions now signals a sensible error.
3619 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3620 (reported by Kristoffer Kvello)
3621 * bug fix: backtrace construction is now more careful when making
3622 lisp-objects from pointers on the stack, to avoid creating bogus
3623 objects that can be seen by the GC.
3624 * bug fix: defaulting of values in contexts expecting more than 7
3625 variables now works on x86-64. (reported by Christopher Laux)
3626 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3628 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3629 as the property-list of a symbol.
3630 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3631 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3632 situations requested, are once again file-compileable. (reported
3635 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3636 * MOP improvement: support for user-defined subclasses of
3637 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3638 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3639 the expansion of DEFMETHOD, is responsible for generating a form
3640 which creates a list of specializers when evaluated. Additional
3641 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3642 debugging and introspective support.
3643 * minor incompatible change: the (unsupported) spinlock interface
3644 has changed: free spinlock now has the value NIL, and a held spinlock
3645 has the owning thread as its value.
3646 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3647 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3649 * enhancement: name of a socket-stream is now "a socket" instead of
3650 "a constant string".
3651 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3652 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3653 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3654 for generic functions. (Thanks to Tobias C. Rittweiler)
3655 * optimization: bignum printing speed has been improved by 20-40%
3656 (depending on the bignum size.)
3657 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3659 * bug fix: the cache used by the CLOS to store precomputed effective
3660 methods, slot offsets, and constant return values is now thread and
3662 * bug fix: generic function dispatch function updating is now thread
3663 and interrupt safe (in the sense that the known issues have been
3665 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3666 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3667 * bug fix: asdf systems with dependencies to the SB-POSIX or
3668 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3669 * bug fix: interrupt safety of applicable method computation has been
3672 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3673 * new contrib: sb-cover, an experimental code coverage tool, is included
3674 as a contrib module.
3675 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3676 significantly faster.
3677 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3678 produce more efficient code on x86-64 if the compiler can determine
3679 that (+ INDEX <constant>) does not require a bounds check and FOO
3680 has an element type at least 8 bits wide.
3681 * enhancement: a new, experimental synchronous timeout facility is
3682 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3683 * enhancement: when a symbol name conflict error arises, the
3684 conflicting symbols are always printed with a package prefix.
3685 (thanks to Kevin Reid)
3686 * enhancement: stepping is now once again supported on the SPARC and
3687 MIPS platforms. (It is also now more likely to work on CheneyGC
3689 * enhancement: sb-sprof can now also track and report accurate call
3691 * bug fixes: the treatment of non-standard subclasses of
3692 SB-MOP:SPECIALIZER is more correct.
3693 * incompatible change: PURIFY no longer copies the data from the
3694 dynamic space into the static and read-only spaces on platforms
3695 that use the generational garbage collector
3696 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3698 * bug fix: GC race condition occasionally resulting in crashes with
3699 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3701 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3703 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3704 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3705 * bug fix: an asynchronous interrupt could previously leave the
3706 system running with GC inhibited.
3707 * bug fix: a DECLARE form evaluated at top-level now causes an error
3708 rather than silently (or verbosely) returning NIL.
3709 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3710 result in a error being signalled due to source form lookup errors.
3711 (reported by Peter Graves)
3713 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3714 * incompatible change: removed writer methods for host-ent-name,
3715 host-ent-addresses -- changing the values did not update the DNS
3717 * minor incompatible change: changed experimental JOIN-THREAD interface
3718 * documentation: the manual now lists reader and writer methods
3719 in class slot documentation sections. (thanks to Richard M Kreuter)
3720 * documentation: unwinding from asyncronous events has been
3721 documented as unsafe.
3722 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3723 in multithreaded application code.
3724 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3725 platforms. (thanks to James Anderson for the optimization hint)
3726 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3728 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3729 variants no longer cons.
3730 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3731 their NOT- variants no longer cons.
3732 * optimization: EQUAL hash tables no longer use SXHASH for objects
3733 of all data types, but instead use an EQL hash for types for which
3734 EQUAL is the same as EQL.
3735 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3736 are significantly faster.
3737 * optimization: new STRING-OUTPUT-STREAM implementation is much
3738 faster for large outputs and conses 30% less on average.
3739 * enhancement: XREF information is now collected for references made
3740 to global variables using SYMBOL-VALUE and a constant argument.
3741 * enhancement: SIGINT now causes a specific condition
3742 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3743 * bug fix: FILE-POSITION used to signal an error in some cases where
3744 ANSI requires it to return NIL.
3745 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3746 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3747 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3749 * bug fix: bad type declaration in the CLOS implementation has
3750 been fixed. (reported by James Anderson)
3751 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3752 (thanks to Lutz Euler)
3753 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3754 required by the CLHS. (reported by Samium Gromoff)
3755 * bug fix: dead unbound variable references now signal an error.
3756 (reported by Marco Monteiro)
3757 * bug fix: / with an unused value was being deleted in safe code.
3758 (thanks to Marco Monteiro and Kevin Reid)
3759 * bug fix: number of characters that can be written onto a single
3760 line in a file is unlimited.
3761 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3762 been fixed by inhibiting interrupts for when GC is disabled.
3763 * bug fix: some interrupt safety issues with GETHASH, (SETF
3764 GETHASH), CLRHASH and REMHASH have been fixed.
3765 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3766 specifier no longer causes infinite recursion.
3767 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3768 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3769 * bug fix: an &environment argument with the correct variable information
3770 is passed to macros that are expanded during byte compilation.
3771 (reported by Samium Gromoff)
3772 * bug fix: a logic error was causing the hash function for bignums to
3773 have excessive amounts of collisions. (reported by Faré Rideau)
3774 * bug fix: modifying the contents of an array could change the return
3775 value of SXHASH on that array, which is only allowed for strings
3776 and bit vectors. (bug introduced in 0.9.16)
3777 * improvement: the x86-64/darwin port now passes all tests (except
3778 for the debugger tests) but should still be considered
3779 experimental until this is fixed.
3780 * improvement: a style-warning is signaled for CASE (etc) clauses with
3781 duplicate keys. (thanks to Kevin Reid)
3782 * improvement: macos/x86 and macos/x86-64 now use mach exception
3783 handlers for dealing with illegal instructions (for trapping and
3784 error handling) and memory protection violations (for GC).
3786 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3787 * new platform: experimental support for x86-64/darwin (MacOS).
3788 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3789 and getnameinfo sockets functions are used instead of gethostbyaddr
3790 and gethostbyname, on platforms where the newer functions are available.
3791 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3793 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3794 don't print the startup banner, but behave as if --noinform was passed
3795 as a command line argument. (thanks to Kevin Reid)
3796 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3797 * optimization: code using alien values with undeclared types is much faster.
3798 * optimization: the compiler is now able to open code SEARCH in more cases.
3799 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3800 * bug fix: using standardized COMMON-LISP special variables as loop
3801 variables no longer signals bogus package lock violations. (reported
3803 * bug fix: declaring local loop variables to be of a range-limited type
3804 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3805 (reported by Andras Simon)
3806 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3807 bugs remain on x86-64.)
3808 * bug fix: the #= and ## reader macros now interact reasonably with
3809 funcallable instances.
3810 * bug fix: type-checks for function arguments were compiled using the
3811 compiler policy settings of the wrong lexical environment (in 1.0.2
3813 * bug fix: SHADOW accepts characters as string designators, as required
3814 by the spec (thanks to Eric Marsden)
3815 * bug fix: fixed GC safety issues when foreign functions are called with
3816 non-base strings as arguments
3817 * bug fix: more consistent error output for fatal-compiler-warnings, like
3819 * bug fix: functions with proper names were showing up as NIL in
3820 backtraces (reported by Edi Weitz, regression in 1.0.2)
3822 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3823 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3824 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3825 produce more efficient code on the x86 if the compiler can determine
3826 that (+ INDEX <constant>) does not require a bounds check and FOO
3827 has an element type at least 8 bits wide.
3828 * bug fix: references to undefined variables are handled the same way
3829 in toplevel forms as in the normal compiler
3830 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3832 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3833 (thanks to Jon Buller)
3834 * improvement: faster compilation times for complex functions
3835 * improvement: added readlink support to SB-POSIX (thanks to Richard
3838 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3839 * improvement: experimental support for mach exception handling on
3840 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3842 * improvement: support for GBK external format.
3843 (thanks to Chun Tian (binghe))
3844 * improvement: the debugger now displays variables that have been closed
3845 over, in code compiled with (DEBUG 2) or higher
3846 * improvement: support for executable cores on NetBSD (thanks to
3848 * new feature: added a RESTART-FRAME debugger command
3849 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3850 be used to provide an implementation for FILE-POSITION on Gray streams
3851 (thanks to Eric Marsden)
3852 * new feature: add syslog, openlog and closelog support to SB-POSIX
3853 (thanks to Richard Kreuter)
3854 * optimization: the function call overhead in code compiled with
3855 a high DEBUG optimization setting is significantly
3856 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3857 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3858 (thanks to Tony Martinez)
3859 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3860 evaluated once (reported by Kevin Reid)
3861 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3862 works again (thanks to Kilian Sprotte)
3863 * bug fix: an error is signaled for tagbodies with duplicate tags
3864 (thanks to Stephen Wilson)
3865 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3866 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3867 stack frames from alien callbacks.
3868 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3869 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3870 65k pages (thanks to David Woodhouse)
3871 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3873 changes in sbcl-1.0.1 relative to sbcl-1.0:
3874 * new platform: FreeBSD/x86-64, including support for threading.
3875 * new feature: the compiler stores cross-referencing information
3876 about function calls (who-calls), macroexpansion (who-macroexpands)
3877 and special variables (who-binds, who-sets, who-references) for code
3878 compiled with (< SPACE 3). This information is available through the
3879 sb-introspect contrib.
3880 * new feature: users may subclass SEQUENCE, and have instances of
3881 these classes interoperate with standard Common Lisp functions if
3882 a number of methods are defined. (This feature is experimental
3883 and the interface subject to change based on feedback from SBCL
3884 users and the general community)
3885 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3886 x86/x86-64, rather than the previous fixed depth of 8
3887 * improvement: another pthread back-end of mutex "pthread-futex".
3888 * bug fix: non-ascii command-line arguments are processed correctly
3889 (thanks to Yaroslav Kavenchuk)
3890 * bug fix: non-required arguments were not passed correctly when a method
3891 defined using DEFMETHOD was called from a mop-generated method using
3892 CALL-NEXT-METHOD (reported by Pascal Costanza)
3893 * bug fix: recursion is now permitted in accessors through
3894 SLOT-UNBOUND. (reported by Pascal Costanza)
3895 * bug fix: an error was signaled at startup if the HOME environment
3896 variable was defined, but had an empty value (reported by Peter Van Eynde)
3897 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3898 signal a PROGRAM-ERROR, not a BUG.
3899 * bug fix: SB-POSIX:READDIR works when built with large file support.
3900 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3902 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3903 for better automatic indentation support. (thanks to Matt Pillsbury)
3904 * optimization: loading generic functions no longer takes O(n^2) time,
3905 proportional to the amount of methods in the generic function
3906 (reported by Todd Sabin and Jeremy Brown)
3907 * optimization: the FIND and POSITION family of sequence functions
3908 are significantly faster on arrays whose element types have been
3910 * improvements to the Windows port:
3911 ** Intermittent heap corruption problems have been fixed. (thanks
3912 to Alastair Bridgewater)
3913 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3915 ** Lisp is able to unwind foreign exception frames from alien
3916 callbacks. (thanks to Alastair Bridgewater)
3918 changes in sbcl-1.0 relative to sbcl-0.9.18:
3919 * improvement: experimental support for threading on FreeBSD/x86.
3920 (thanks to NIIMI Satoshi)
3921 * improvement: runtime option --dynamic-space-size can be used
3922 to set the size of the dynamic space reserved on startup.
3923 * improvement: floating point modes in effect are now saved in
3924 core, and restored on startup.
3925 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3926 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3927 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3928 threads are not running after *SAVE-HOOKS* have run.
3929 * improvement: writes to CLOS instance slots are type-checked in code
3930 compiled with (SAFETY 3)
3931 * improvement: floating-point exception handling on FreeBSD (thanks to
3933 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3934 (thanks to Zach Beane)
3935 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3937 * improvement: added support for the Shift-JIS external format.
3938 (contributed by NIIMI Satoshi)
3939 * improvement: callbacks are supported on Linux/PPC. (thanks to
3941 * bug fix: compiler bug triggered by a (non-standard) VALUES
3942 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3943 * bug fix: file compiler no longer confuses validated and already
3944 dumped structurres. (reported by Kaersten Poeck)
3945 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3946 fill-pointer signals a type-error as required. (thanks to
3948 * bug fix: disassemly of funcallable instances works.
3949 * bug fix: single stepping on PPC.
3950 * bug fix: fix thread-safety problems in the type system (generally
3951 manifesting as nonsensical errors like "STRING is a bad type specifier
3952 for sequences" or "The value 1 is not of type FIXNUM")
3953 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3954 (reported by Josip Gracin)
3955 * bug fix: an error is signaled for attempts to displace arrays with
3956 incompatible element types (thanks to Mario Mommer)
3957 * bug fix: more correct handling of wide characters in debug info
3958 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3959 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3960 and don't cause extra consing
3961 * optimization: MAP and MAP-INTO are significantly faster on vectors
3962 whose elements types have been declared.
3963 * Improvements to SB-SPROF:
3964 ** Support for allocation profiling
3965 ** Reduced profiling overhead, especially for long profiling runs
3966 * Improvements to the Windows port:
3967 ** floating point exceptions are now reported correctly.
3968 ** stack exhaustion detection works partially.
3969 ** more accurate GET-INTERNAL-REAL-TIME.
3970 ** better RUN-PROGRAM behaviour in case of errors in the child
3972 ** PROBE-FILE now simplifies pathnames correctly.
3973 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3974 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3975 1st 1970 (although time timezone data will be unreliable).
3976 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3978 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3979 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3980 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3982 * bug fix: two potential GC deadlocks affecting threaded builds.
3983 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3984 returns T (reported by Anton Kazennikov)
3985 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3986 with non-variable places
3987 * bug fix: remove a race condition in the setting of
3988 funcallable-instance functions, this should make threaded CLOS
3989 code more stable against memory faults.
3990 * bug fix: corruption of specials when unbinding is interrupted by an
3991 asynchronous unwind (reported by Hannu Koivisto)
3992 * improvement: the debugger will now also display local variables that
3993 are only used once, for code compiled with a DEBUG optimization quality
3996 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3997 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3998 * incompatible change: External-format support for FFI calls. The
3999 SB-ALIEN:C-STRING no longer implies an ASCII
4000 external-format. Instead the string is subject to external-format
4001 conversion. Additionally return values of type SB-ALIEN:C-STRING
4002 are by default of type (SIMPLE-ARRAY CHARACTER), not
4003 SIMPLE-BASE-STRING. For an alien type that behaves like the old
4004 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
4005 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
4006 * incompatible change: SB-EXT package no longer contains the
4007 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
4008 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
4010 * incompatible change: the single-stepper is no longer available
4011 on Alpha, Mips and Sparc platforms.
4012 * minor incompatible change: the direct superclasses of
4013 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
4014 not (STANDARD-OBJECT FUNCTION). This makes the
4015 class-precedence-lists of GENERIC-FUNCTION and
4016 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
4018 * minor incompatible change: the default stream external format on
4019 non-unicode SBCL is no longer detected from the locale, but is always
4021 * new feature: Add a version of evaluator that uses an interpreter instead
4022 of the compiler. EVAL still uses the compiler by default, to switch it
4023 to use the interpreter, set the value of the variable
4024 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
4025 * minor incompatible change: the single-stepper REPL has been merged
4026 with the normal debugger (see the "Stepping" heading of the debugger help
4027 for more details). The debugger command STEP will no longer switch
4028 to the single-stepper REPL.
4029 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
4030 for a type now works.
4031 * bug fix: loading of default sysinit file works. (thanks to Leonid
4033 * bug fix: better detection of circularities in the file-compiler.
4034 (reported by Marco Monteiro)
4035 * bug fix: the CL pathname functions now work with files that have
4036 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
4037 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
4038 systems with Unix98 pty semantics.
4039 * bug fix: ASDF-INSTALL will now work with bsd tar.
4040 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
4042 * bug fix: timers expiring in dead threads no longer cause a
4043 type-error (reported by Paul "Nonny Mouse").
4044 * bug fix: thanks to more lightweight single-stepper instrumentation,
4045 code compiled with (DEBUG 3) will compile and execute significantly faster,
4046 and will have more accurate type-inferencing than before
4047 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
4048 whose bindings are modified
4049 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
4050 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
4051 ** replace dummy implementations of CL:MACHINE-INSTANCE and
4052 CL:SOFTWARE-VERSION with proper version
4054 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
4055 * feature: implemented the READER-METHOD-CLASS and
4056 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
4057 as specified by AMOP.
4058 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
4060 * optimization: faster LOGCOUNT implementation on x86 and x86-64
4061 (thanks to Lutz Euler)
4062 * optimization: hashing of general arrays and vectors has been
4063 improved. (reported by Any Fingerhut)
4064 * enhancement: SB-INTROSPECT is now able to find definitions of
4065 profiled functions. (thanks to Troels Henriksen)
4066 * enhancement: compiler-macro expansion applies now to FUNCALL forms
4067 as well, allowing compiler-macros for SETF-functions to expand.
4068 * enhancement: step-instrumentation no longer wraps known
4069 single-value functions with multiple-value context, allowing
4070 better type inference.
4071 * fixed bug #337: use of MAKE-METHOD in method combination now works
4072 even in the presence of user-defined method classes. (reported by
4073 Bruno Haible and Pascal Costanza)
4074 * fixed bug #339(c): if there are applicable methods not part of any
4075 long-form method-combination group, call INVALID-METHOD-ERROR.
4076 (reported by Bruno Haible)
4077 * fixed bug #361: the :FUNCTION initarg in the protocol for
4078 initialization of methods can now be used to override
4079 internally-produced optimized functions. (reported by Bruno
4081 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
4082 system-provided lambda expression no longer cause warnings about
4083 unbound #:|pv-table| symbols.
4084 * bug fix: improved the handling of type declarations and the
4085 detection of violations for keyword arguments with non-constant
4087 * bug fix: potentially erronous calls to PATHNAME and
4088 MERGE-PATHNAMES were being flushed in some cases.
4089 (reported by Richard Kreuter)
4090 * bug fix: compiled calls to TYPEP were mishandling obsolete
4091 instances. (reported by James Bielman and Attila Lendvai)
4092 * bug fix: format strings with ~> without matching ~< no longer
4093 trigger an AVER, but signal an understandable error instead.
4094 (reported by Antonio Martinez)
4095 * bug fix: specifying an output-file without a pathname-type for
4096 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
4097 of input-file instead of "fasl". (reported by Robert Dodier)
4098 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
4099 (reported by James Y Knight).
4100 * bug fix: compiler-macros-function did not consider the environment
4101 argument for shadowing by local functions.
4102 * bug fix: compiler-macros expansion was inhibited by local INLINE
4104 * bug fix: inline expansions of known functions were subject to
4105 step-instrumentation in high debug policies, leading to problems
4106 with type-inference.
4107 * bug fix: compiler failed to differentiate between different CONS
4108 types in some cases.
4109 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
4110 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
4111 * bug fix: #368: incorrect use of expressed vs. upgraded array
4113 * bug fix: #306a: more precise unions of array types.
4114 * thread-safety improvements:
4115 ** CONDITION-WAIT could return early on Linux, if the thread was
4116 interrupted and subsequently continued with SIGCONT.
4117 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
4119 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
4120 * added support for the ucs-2 external format. (contributed by Ivan
4122 * minor incompatible change: pretty printing of objects of type
4123 (cons symbol) is, in the default pprint-dispatch-table, now
4124 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
4126 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
4127 called later in a class's lifetime, possibly as late as when the
4128 first instance of the class is created. Previously,
4129 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
4130 class became finalizeable.
4131 * fixed bug: FILE-POSITION sometimes returned inconsistent results
4132 for multibyte external-format streams. (thanks to "vbzoli")
4133 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
4134 with :ALLOCATION :CLASS inherited from superclasses of the
4136 * fixed bug: anonymous classes can now be created using the :NAME
4137 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
4138 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
4139 * fixed bug: core-files saved with :EXECUTABLE T can again be
4140 executed when SBCL_HOME isn't set. (reported by James Knight)
4141 * fixed bug: toplevel LOCALLY forms with declarations could
4142 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
4143 * fixed bug: printing from several different threads using different
4144 values of *print-case* could cause invalid output, due to
4145 some internal special variables of the printer not being bound
4146 thread-locally (reported by Max Mikhanosha)
4147 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
4148 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
4149 (reported by Pascal Costanza)
4150 * fixed bug: FINALIZE-INHERITANCE is called from
4151 REINITIALIZE-INSTANCE on classes when the class has previously
4152 been finalized, as required by AMOP.
4153 * minor code generation optimizations:
4154 ** better register allocation in CLOS dispatching functions
4155 ** overflow detection when coercing signed bytes to fixnums on x86-64
4156 ** is now implemented with one IMUL instruction instead of three shifts
4157 ** more efficient bit-vector access on x86 and x86-64
4158 ** more efficient access to raw structure slots on x86 and x86-64
4159 * fixed some bugs revealed by Paul Dietz' test suite:
4160 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
4161 return its argument.
4163 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
4164 * feature: thread support on Solaris/x86, and experimental thread support
4166 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
4168 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
4169 default method for SLOT-UNBOUND.
4170 * minor incompatible change: prevent the user from specializing the
4171 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
4172 somewhat counter to the intent of the protocol, I (CSR) think, and
4173 additionally it just doesn't work in SBCL as currently
4174 implemented, thanks to optimizations (that are always valid for
4175 the other three SLOT-VALUEish functions, but not for the setter).
4176 * minor incompatible change: the :SB-LDB feature is now enabled by
4177 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
4178 the low-level debugger.
4179 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
4180 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
4181 down to an SB-SYS:FD-STREAM, allowing direct communication in
4182 more cases. Temporary files and pipes are still used as a fallback
4184 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
4185 on the non-reentrant C functions localtime(3) and gmtime(3).
4186 * bug fix: global optimization policy was not visible in LOCALLY and
4188 * bug fix: class objects can be used as specializers in methods.
4189 (reported by Pascal Costanza)
4190 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
4191 with a type error. (reported by blitz_ on #lisp)
4192 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
4193 failed with a type error. (reported by Pascal Bourguignon)
4194 * bug fix: merging pathnames against defaults with :DIRECTORY
4195 starting with '(:RELATIVE :BACK) should preserve the :BACK.
4196 (reported by James Y Knight)
4197 * bug fix: saving large (>2GB) cores on x86-64 now works
4198 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
4199 constant index and a (simple-array (signed-byte 32)) array
4200 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
4201 error (patch by Robert J. Macomber)
4202 * feature: TIME now displays the amount of run-time spent in GC
4203 * bug fix: The debugger now does a better job of respecting
4204 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
4205 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
4206 workaround for bug 403.)
4207 * bug fix: floating point exception handling now works on FreeBSD
4208 (thanks to NIIMI Satoshi)
4209 * fixed some bugs revealed by Paul Dietz' test suite:
4210 ** MISC.641: LET-conversion were not supposed to work in late
4212 * improvements to the Win32/x86 port:
4213 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
4214 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
4216 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
4217 * new feature: source path information is generated for macro-expansion
4218 errors for use in IDE's like Slime (thanks to Helmut Eller)
4219 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
4220 * bug fix: compiler does not loop forever on an invalid type in
4222 * improvement: compilation of most CLOS applications is significantly
4224 * optimization: added a limited bytecode compiler for simple toplevel
4225 forms, speeding up compilation and FASL loading
4226 * bug fix: the statistical profiler now properly distinguishes anonymous
4229 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
4230 * minor incompatible change: in sbcl-0.9.11 (but not earlier
4231 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
4232 into subclasses of the finalized class. Now user calls to
4233 FINALIZE-INHERITANCE finalize just the one class, and calls by the
4234 system return before any subclasses are finalized.
4235 * minor incompatible change: The reader no longer ignores errors
4236 regarding non-existent packages in #+ and #- feature tests.
4237 * new feature: command line options --no-sysinit, --no-userinit to
4238 inhibit loading the corresponding init files
4239 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
4240 for sending data through UDP sockets (thanks to François-René Rideau)
4241 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
4242 error is signalled instead (thanks to François-René Rideau)
4243 * minor incompatible change: Error signalling behaviour of lexical
4244 operations violating package locks has changed slightly. Refer to
4245 documentation on package locks for details.
4246 * enhancement: EVAL can process IF-expressions without resorting to the
4248 * bug fix: Some operations involving SIN, COS, or TAN weren't being
4249 constant-folded properly due to missing out-of-line functions.
4250 (reported by Mika Pihlajamäki)
4251 * bug fix: LISTEN sometimes returned T even in cases where no data was
4252 immediately available from the stream
4253 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
4254 were reversed. (reported by Levente Mészáros)
4255 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
4256 when given a vector displaced to an adjustable array. (reported
4258 * bug fix: derivation of float boundaries from numbers outside the
4259 appropriate float range (reported by John Wiseman)
4260 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
4262 * bug fix: precomputing cache entries for generic functions with
4263 some subclasses of specializers as yet invalid does not attempt to
4264 fill a cache line with a negative offset. (reported by Levente
4266 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
4267 allow condition class objects as arguments to DOCUMENTATION and
4268 (SETF DOCUMENTATION); only find and set documentation for
4269 structure names for the STRUCTURE doc-type. (suggested by Gary
4271 * improvements to the Win32/x86 port:
4272 ** (user-homedir-pathname) and default initialization file
4273 locations now know about the user's "Documents and Settings"
4274 directory (thanks to Yaroslav Kavenchuk)
4275 ** run-program is implemented (thanks to Mike Thomas)
4276 ** sockets support (thanks to Timothy Ritchey)
4277 ** better backtrace support (thanks to Alastair Bridgewater)
4278 ** sb-grovel supported
4279 ** asdf-install and sb-posix work somewhat
4280 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
4281 * improvements to the Solaris/x86 port:
4282 ** works on Solaris 11/Solaris Express
4283 ** floating-point exception handling support
4284 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
4285 * fixed some bugs revealed by Paul Dietz' test suite:
4286 ** REMOVE-METHOD returns its generic function argument even when
4287 the method is not one of the generic functions' methods.
4288 ** objects declared as MEMBER types can be admissible arguments to
4289 structure accessors.
4290 ** printing characters should simply be printed by the FORMAT ~:C
4292 ** compiler failure when compiling functions with hairy constant
4293 defaults for optional parameters.
4294 ** compiler produces wrong code when MAYBE-INLINE-expanding a
4295 function, which is already optimized.
4297 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
4298 * new platform: experimental support for SBCL x86/Darwin, including
4299 MacOS X 10.4.5 on Intel.
4300 * new feature: Unicode character names are now known to the system
4301 (through CHAR-NAME and NAME-CHAR).
4302 * new feature: the filesystem location of SBCL's core file is
4303 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
4304 * minor incompatible change: the contrib modules SB-POSIX and
4305 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
4306 this change is to make it easier to distribute
4307 location-independent binaries.
4308 * bug fix: as implied by AMOP, standardized classes no longer have
4309 slots named by external symbols of public packages. (reported by
4311 * optimization: calling functions via constant symbols -- as in
4312 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
4313 via the function object as in (FUNCALL #'FOO).
4314 * optimization: on x86 and x86-64, the calling convention for the
4315 case of dealing with an unknown number of values has been altered
4316 to be friendlier to the prediction heuristics implemented,
4317 particularly with reference to CALL and RET pairing. (thanks to
4318 Alastair Bridgewater)
4319 * optimization: on x86, the code for access to thread-local symbol
4320 values and binding/unbinding of thread-local symbols is smaller.
4321 (thanks to Alastair Bridgewater)
4322 * enhancement: CONSTANTP is now able to determine constantness of
4323 more complex forms, including calls to constant-foldable standardized
4324 functions and some special forms beyond QUOTE.
4325 * fixed bug: occasional GC crashes on Solaris/x86
4326 * optimization: x86-64 supports stack allocation of results of simple
4327 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
4328 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
4329 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
4330 (thanks to James Knight)
4331 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
4332 by the standard (thanks to Stephen Compall)
4334 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
4335 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
4336 be used for bundling the runtime and the core file into one
4337 executable binary. This feature is not currently supported on all SBCL
4338 platforms. (thanks to James Bielman and NIIMI Satoshi)
4339 * new feature: a generational or ephemeral garbage collector is now
4340 the default on the PowerPC platform (both Linux and Darwin). The
4341 old Cheney (stop and copy) collector is a build-time option.
4342 (thanks to Cyrus Harmon, after Raymond Toy)
4343 * minor incompatible change: the method by which SBCL finds its
4344 contributed modules has changed; it no longer relies on symbolic
4345 links from an $SBCL_HOME/systems directory, but searches directly
4346 in the subdirectories of $SBCL_HOME.
4347 * enhancement: the dynamic heap size on the Linux/PPC platform is
4348 markedly larger, even using the older Cheney garbage collector.
4349 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
4350 certain complicated string types. (reported by Gary King)
4351 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
4352 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
4353 * fixed bug: DOCUMENTATION on structures no longer signals an
4354 error if no structure type of the right name exists. (reported by
4356 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
4357 applicable non-standard primary or :AROUND method on
4358 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
4359 no longer cause unbound variable errors. (reported by Kevin Reid)
4360 * fixed bug: metacircle resolution in cases where methods have slots
4361 added before the slots from STANDARD-METHOD. (reported by Jean
4363 * fixed bug: the Power PC assembly code for calling into lisp
4364 sometimes computed its return address wrongly (depending on the
4365 15th bit of the address, fixed at link time). This used to
4366 manifest itself in a segmentation violation while building PCL.
4367 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
4368 many others over the years)
4369 * fixed bug: ROOM no longer reports silly numbers for stack usage if
4370 the stack pointer (treated as a signed integer) is negative.
4371 (thanks to Peter van Eynde)
4373 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
4374 * new platform: experimental support for the Windows operating
4375 system has been added. (thanks to Alastair Bridgewater)
4376 * fixed several bugs in and robustified the PPC FFI (including
4377 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
4378 * bug fix: allow non-simple string symbol names (reported by Paul
4380 * bug fix: interrupt handling on NetBSD (thanks to Richard M
4382 * bug fix: saving a core corrupted callbacks on x86/x86-64
4383 * bug fix: closed a loophole in metacircularity detection and
4384 grounding in the PCL implementation of CLOS.
4385 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
4386 (reported by tomppa on #lisp)
4387 * bug fix: clear the direction flag on Lisp -> C transitions, as
4388 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
4389 (reported by Andrej Grozin and Hendrik Maryns)
4390 * optimization: major improvements to GC efficiency on GENCGC platforms
4391 * optimization: faster implementation of EQUAL
4392 * optimization: emit more efficient opcodes for some common
4393 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
4394 * optimization: several other minor code-generation improvements on x86-64
4395 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
4397 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
4398 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4399 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
4400 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
4401 by ANSI as a generic function, and for consistency (SETF
4402 GENERIC-FUNCTION-NAME) is treated likewise.
4403 * fixed bug #233.b: make constraint propagation notice when a variable
4404 value is changed after it is referenced but before it is used
4405 * fixed bug #296: no more arbitrary behaviour from filenames with
4406 odd characters as --load arguments. (reported by Adam Warner)
4407 * fixed bug #390: :CHARACTER-SET pathname components now work as
4408 expected. (reported by Tim Daly Jr)
4409 * fixed bug #391: complicated :TYPE intersections in slot
4410 definitions no longer cause an error in PCL internals.
4411 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
4412 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
4413 returning the number of octets which would be written to the
4414 file-stream. (thanks to Robert J. Macomber)
4415 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
4416 arguments to the internal stream functions. (thanks to David
4418 * bug fix: stack exhaustion is now handled on the x86/SunOS
4419 platform. (thanks to Daisuke Homma)
4420 * bug fix: more accurate ROOM results on GENCGC platforms
4421 * optimization: improved type inference for arithmetic-for
4422 index variables in LOOP
4423 * optimization: faster floating-point SQRT on x86-64
4424 * fixed some bugs revealed by Paul Dietz' test suite:
4425 ** DOCUMENTATION returns NIL instead of "" for method combinations
4426 that don't have a docstring
4428 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
4429 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4430 GENERIC-FUNCTION-NAME) are no longer generic functions, and
4431 therefore are not customizeable by user code (as seems to be at
4432 least permitted and maybe required by AMOP). As a consolation,
4433 however, the SBCL implementation of these functions now calls
4434 REINITIALIZE-INSTANCE as specified by AMOP.
4435 * bug fix: slot-definition documentation is propagated as per ANSI
4436 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
4437 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
4438 argument, as do eslotd initialization methods. (from Pascal
4439 Costanza's "Closer" project)
4440 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
4441 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
4443 * bug fix: it is now possible to have more than one subclass of
4444 STANDARD-GENERIC-FUNCTION without causing stack overflow.
4445 (reported by Bruno Haible, Pascal Costanza and others)
4446 * bug fix: the dependent update protocol now works for generic
4447 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
4448 and Pascal Costanza)
4449 * bug fix: condition-class instances corresponding to
4450 DEFINE-CONDITION forms are now created eagerly. (reported by
4451 Kalle Olavi Niemitalo on comp.lang.lisp)
4452 * bug fix: floating point printing is more accurate in some
4453 circumstances. (thanks to Simon Alexander)
4454 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
4455 merged with *DEFAULT-PATHNAME-DEFAULTS*.
4456 * bug fix: callbacks on OS X now preserve stack-alignment.
4457 (thanks to Cyrus Harmon)
4458 * enhancement: the x86-64 disassembler is much better at
4459 disassembling SSE instructions. (thanks to Lutz Euler)
4460 * enhancement: CHECK-TYPE on a variable now allows type-inference
4461 (thanks to Vincent Arkesteijn)
4462 * optimization: improved performance of EUC-JP external format.
4463 (thanks to NIIMI Satoshi)
4464 * optimization: performance improvements to IO on file streams of
4465 :ELEMENT-TYPE CHARACTER
4466 * optimization: much faster memory allocation on x86-64
4467 * optimization: faster garbage collections (latency and throughput)
4469 * optimization: faster bignum subtraction and division on x86 and x86-64
4470 (thanks to Lutz Euler)
4471 * optimization: more accurate type-inference for loops that use a
4472 floating point index variable or a negative step.
4474 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
4475 * bug fix: add a workaround to SBCL looping infinitely at startup on
4476 Linux kernels with apparently buggy implementations of personality().
4477 (thanks to Svein Ove Aas)
4478 * bug fix: Unicode symbols are correctly printed in LDB backtraces
4479 (thanks to David Lichteblau)
4480 * bug fix: local bindings shadow global symbol macros for
4481 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
4482 * optimization: non-open coded uses of numeric comparison operators
4483 (e.g. >) no longer cons when called with more than one parameter
4484 on platforms supporting dynamic-extent allocation.
4485 * enhancement: saving cores with foreign code loaded is now supported
4486 on MIPS/Linux in addition to the previously supported platforms.
4487 * bug fix: FIND-RESTART now tests for activity, not applicability when given
4488 a restart object as identifier. (reported by Helmut Eller for CMUCL)
4489 * bug fix: division by zero in sb-sprof when no samples were collected
4490 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
4491 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4492 (thanks to Alexander Kjeldaas)
4493 * new feature: ignoring the return values of destructive functions
4494 like NREVERSE signals a compile-time style-warning.
4495 (thanks to Kevin Reid)
4496 * new feature: the alignment of alien structure fields can be
4497 explicitly specified. (thanks to Cyrus Harmon)
4498 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4499 and dump core on SIGQUIT
4501 ** incompatible change: threads do not inherit values of specials
4502 from their parents (see manual)
4503 ** bug fix: threads stacks belonging to dead threads are freed by the
4504 next exiting thread, no need to gc to collect thread stacks anymore
4505 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4506 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4507 ** bug fix: dynamic variable and thread start related gc lossage
4508 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4510 * fixed some bugs revealed by Paul Dietz' test suite:
4511 ** SUBTYPEP is slightly more accurate on heinously complicated
4512 CONS types where some of the members have uncertain (in the
4513 NIL, NIL sense) type relationships to each other.
4515 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4516 no longer purified unless :PURIFY T is explicitly specified.
4517 ** Non-purified cores are significantly smaller than before
4519 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4520 * new feature: timers based on Zach Beane's excellent timer package
4521 * added support for the following external formats: koi8-u,
4522 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4523 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4524 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4525 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4526 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4527 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4528 * incompatible change: a threaded SBCL will no longer revert to
4529 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4530 * bug fix: interrupts are disabled until startup is complete; no
4531 more sigsegvs when receiving a signal to soon
4532 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4534 * bug fix: add a workaround for the memory randomization features in
4535 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4536 workaround will only be in effect on systems with the proc filesystem
4538 * bug fix: printing objects of type HASH-TABLE signals a
4539 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4541 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4542 have been running for over 50 days. (reported by Gilbert Baumann)
4543 * bug fix: the logic for getting names of functions gets less
4544 confused when confronded with alternate-metaclass
4545 funcallable-instances. (reported by Cyrus Harmon)
4546 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4547 consistent, even on internal alternate-metaclass objects.
4548 * bug fix: flush closure information collected by physical
4549 environment analysis prepass before the main pass. (bug reported
4551 * bug fix: compiler pack phase does not modify a hashtable, which is
4552 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4553 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4554 may be expanded. (reported by Alexander <malishev> on c.l.l)
4555 * bug fix: no more style-warnings when compiling code using LAST
4556 under high-SPEED low-SPACE settings. (reported by David Wallin
4558 * fixed some incompatibilities between SBCL's MOP and the MOP
4560 ** the METAOBJECT class is now implemented;
4561 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4562 STANDARD-OBJECT, as required;
4563 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4564 now compatible (as required by VALIDATE-SUPERCLASS); there
4565 remains a consistency requirement over the presence or absence
4566 of the FUNCTION class in the superclass list of finalized
4567 classes; see the manual for more details;
4568 ** the :AROUND method for COMPUTE-SLOTS on
4569 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4570 requested slot ordering.
4572 ** bug fix: parent thread now can be gc'ed even with a live
4574 ** bug fix: binding a special with PROGV to no value is not
4575 the same as that symbol not having been bound (thanks to
4577 ** bug fix: binding specials is thread safe (thanks to
4579 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4580 and SB-SPROF do not die with 'no handler for signal XX in
4581 interrupt_handle_now(..)' anymore
4582 ** bug fix: WITH-TIMEOUT works with multiple running threads
4583 * fixed some bugs revealed by Paul Dietz' test suite:
4584 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4585 the :method-class keyword argument.
4587 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4588 * new port: the Solaris operating system on x86 processors is now
4589 mostly supported, though some rough edges in the environment
4590 remain. (thanks to Daisuke Homma)
4591 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4592 space for its heap. (thanks to Thiemo Seufer)
4593 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4594 closures. (thanks to Thiemo Seufer)
4595 * minor incompatible change: eof selects abort in the debugger.
4596 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4597 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4599 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4600 deprecated, and will go away in a future revision of SBCL.
4601 * minor incompatible change: GC-ON and GC-OFF are no longer
4602 implemented with a counter, it does not matter how many times gc
4603 is switched on or off
4604 * bug fix: discriminating functions for generic function classes
4605 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4606 make invalid assumptions about method precedence order. (reported
4608 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4609 platforms. (thanks to Thiemo Seufer)
4610 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4611 * bug fix: correct pathname printing with printer escaping is on.
4612 (thanks to Kevin Reid)
4613 * bug fix: complex VOP definitions in "user-space" no longer trigger
4614 package locks. (reported by Zach Beane)
4615 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4616 for funcallable-instance functions, and is no different from
4618 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4619 characters in the current readtable. (reported by Nicholas Neuss)
4620 * bug fix: SUBTYPEP on various CONS types returns more a more
4621 accurate acknowledgment of its certainty.
4622 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4623 lists in some cases. This partially fixes bug 384.
4624 * flush all standard streams before prompting in the REPL and the
4626 * bug fix: signal handling and triggering gc do not conflict
4627 directly anymore, in particular a high frequency sb-sprof does
4628 not prevent gc from running
4629 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4630 approximation for timezone and DST information between the
4631 universal time epoch and the smallest negative 32-bit time_t.
4632 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4633 year 1899 so long as the encoded time is non-negative.
4634 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4635 the correct answer for non-constant rotate amounts when performing
4636 an inline 32-bit rotation.
4638 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4639 there is only one thread in the session
4640 ** bug fix: memory leak for streams created in one thread and
4641 written to in another
4642 ** bug fix: lockup when compiled with gcc4
4643 ** bug fix: race that allows the gc to be triggered when gc is
4645 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4646 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4648 ** bug fix: finished threads are gc'ed properly
4649 * fixed some bugs revealed by Paul Dietz' test suite:
4650 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4651 has arguments with a different set of applicable methods from
4652 the orignal arguments.
4653 ** The type error thrown by MAP now has a correct expected-type
4655 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4656 name a compiled function.
4657 ** Three MISC tests where a large bignum was improperly coerced to
4658 a float that couldn't represent that bignum during type
4659 derivation were fixed.
4660 ** SUBTYPEP can now handle types involving the negation of a
4661 list-form FUNCTION type.
4662 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4663 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4664 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4666 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4667 * New feature: Experimental support for bivalent streams: streams
4668 opened with :element-type :default now allow character and binary
4669 (unsigned-byte 8) I/O
4670 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4671 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4673 * bug fix: no more highly sporadic "couldn't check whether ~S is
4674 readable" when reading a stream and an interrupt hits in the middle
4675 of a select system call
4676 * compiler better recognizes complex arrays (reported by Eduardo
4678 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4679 for variables on SBCL built with linkage-tables. (reported by Luis
4681 * various error reporting improvements.
4682 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4683 (Thanks to Thiemo Seufer)
4684 * bug fix: nested reader invokations work correctly
4685 * bug fix: it is possible to have simultaneous references to foreign
4686 code and foreign data with the same name.
4688 ** added x86-64 support
4689 ** incompatible change: the threading api now works with thread
4690 objects instead of thread ids
4691 ** bug fix: threads are protected from signals and interruption when
4692 starting up or going down
4693 ** bug fix: a race where an exiting thread could lose its stack to gc
4694 ** bug fix: don't halt on infinite error in threads if possible
4695 ** fixed numerous gc deadlocks introduced in the pthread merge
4696 ** bug fix: fixed thread safety issues in read and print
4697 ** bug fix: debugger doesn't hang on session lock if interrupted at
4698 an inappropriate moment
4699 ** bug fix: run-program is now thread safe(r)
4700 ** bug fix: inner with-recursive-lock no longer releases the mutex
4701 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4702 * fixed some bugs revealed by Paul Dietz' test suite:
4703 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4704 EXPECTED-TYPE slots filled.
4705 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4707 ** MAKE-CONDITION accepts classes as type-designators.
4708 ** COMPILE may never return NIL.
4709 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4710 range before calling Unix time functions
4712 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4713 * numerous signal handling fixes to increase stability
4714 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4715 * minor incompatible change: we now correctly canonize default
4716 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4717 as per the MOP, rather than the historical (INITARG INITFUNCTION
4718 INITFORM). (reported by Bruno Haible)
4719 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4720 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4721 for more information.
4722 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4723 pathname is a directory pathname.
4724 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4725 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4727 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4728 :METACLASS argument in addition to a class name. (reported by
4729 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4730 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4731 (reported by Bruno Haible; patch from Gerd Moellmann)
4732 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4734 * bug fix: more cleanups to the floating point exception handling on
4735 x86-64 (thanks to James Knight)
4736 * bug fix: the compiler does not try to constant fold calls of
4737 COERCE and BIT-* functions when they return freshly constructed
4738 objects. (reported by Nikodemus Siivola and Paul Dietz)
4739 * optimization: improved the MIPS versions of generic (in the
4740 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4741 * optimization: direct conversion of (unsigned-byte 32) to floats on
4742 the PowerPC platform.
4743 * optimization: structure instances with raw slots now use less
4744 memory, and probably show better memory locality. (thanks to
4746 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4747 are treated as requests for stack allocation on the x86-64,
4748 Alpha-32, PPC and SPARC platforms.
4749 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4750 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4751 (thanks to Tony Martinez)
4753 ** gcing a dead thread can no longer lead to lockups
4754 ** threads block signals until they are set up properly
4755 ** errno is no longer shared by threads
4756 ** interrupt-thread restores the eflags register on x86
4757 ** fixed some lockups due to gc/thread interaction
4758 * fixed some bugs revealed by Paul Dietz' test suite:
4759 ** invalid dotted lists no longer raise a read error when
4760 *READ-SUPPRESS* is T
4761 ** signal an error if a symbol that names a declaration is used
4762 as the name of a type, or vice versa
4763 ** allow using the (declare (typespec var*)) abbreviation for
4764 (declare (type typespec var*)) with all type specifiers
4765 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4766 ** always return NIL from PPRINT-POP when OBJECT is NIL
4767 ** don't signal errors when pretty-printing malformed LABELS,
4768 FLET or MACROLET forms
4769 ** declarations in a DOLIST body are also in scope for the
4771 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4773 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4776 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4777 * fixed cross-compiler leakages that prevented building a 32-bit
4778 target with a 64-bit host compiler.
4779 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4780 opened with :IF-EXISTS :OVERWRITE.
4781 * fixed bug 281: error for an invalid qualifier in a short-form method
4782 combination method is not signalled until the faulty method is called.
4783 * bug fix: iteration variable type inferrer failed to deal with open
4784 intervals. (reported by Alan Shields)
4785 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4786 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4787 or more runtime options were provided to the sbcl binary.
4788 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4789 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4790 * optimization: there's now a fast-path for fixnum arguments in the
4791 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4792 * optimization: the code generated on x86-64 is more compact thanks
4793 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4794 * bug fix: floating-point exception handling now partly works on
4795 x86-64. (Thanks to James Knight)
4796 * improvement to the MIPS backend from Thiemo Seufer: C-style
4797 64-bit long long arguments and return values to alien functions
4799 * fixed some bugs revealed by Paul Dietz' test suite:
4800 ** the type-error signalled from WARN has a filled-in DATUM slot.
4801 ** the type-error required when a stream is not associated with
4802 a file has the stream as its datum.
4803 ** type-errors on single-floats on x86-64 no longer have
4804 :INVALID-OBJECT as the datum
4805 ** the type-errors signalled for invalid function names now have
4806 a correct expected type
4807 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4808 for structures defined with a :TYPE. Documentation strings for
4809 typed structures are no longer immediately discarded
4810 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4811 broadcast streams and synonym streams. FILE-LENGTH now also works
4812 on broadcast streams.
4814 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4815 * incompatible change: the --noprogrammer option, deprecated since
4816 version 0.7.5, has been removed. Please use the equivalent
4817 --disable-debugger option instead.
4818 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4820 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4821 inoperational for a while now) has been completely removed.
4822 * null lexical environments are now printed as #<NULL-LEXENV>,
4823 significantly reducing the amount of clutter in typical backtraces.
4824 * documentation on weak pointers, finalization, and after GC hooks
4825 has been added to the manual.
4826 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4827 as other specialized array types, is much faster. SUBSEQ and
4828 COPY-SEQ on such arrays have also been sped up.
4829 * optimization: EQL is now more efficient when at least other argument
4830 is known to be of type (OR FIXNUM (NOT NUMBER)).
4831 * fixed bug: the runtime is now less vulnerable to changes in the
4832 size of the SBCL object on OS X, and virtual memory is reserved for
4833 all spaces that need to be at a fixed address.
4834 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4835 * fixed bug: finalizers and after GC hooks that cause consing are now
4837 * fixed bug: compiler error messages and summaries are now printed to
4838 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4839 * fixed inference of the upper bound of an iteration variable.
4840 (reported by Rajat Datta).
4841 * fixed bug 211e: calling local functions with duplicated constant
4842 keyword argument no longer causes a bogus style warning about an
4844 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4845 ftype declaration to be disregarded. (reported by Dave Roberts)
4846 * fixed bug 373: caused by erronous compilation of references to alien
4847 variables in the runtime on ppc/darwin.
4848 * fixed bug 376: CONJUGATE type deriver.
4849 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4850 (reported by Baughn on #lisp)
4851 * a cross-compiler bug on non-x86 platforms has been identified and
4852 fixed. (thanks to Bruno Haible)
4853 * improvements to the MIPS runtime code for increased stability.
4854 (thanks to Thiemo Seufer)
4855 * increased the maximimum compact environment size to allow
4856 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4857 * partial workaround for bug 135: don't name the function we're
4858 calling for hairy cases of EVAL, so as not to accumulate one environment
4859 entry per call to EVAL. (reported by Kevin Reid)
4860 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4861 * optimization: type testing for non-vector arrays should be faster.
4862 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4864 * bug fix: setting 31st element of a bit vector to zero did not work
4866 * bug fix: redefining a class definition which failed due to a
4867 previous accessor / function clash now works (but see BUGS entry
4868 #380 for more problems in this area). (thanks to Zach Beane)
4869 * the long form of DEFINE-METHOD-COMBINATION disables method group
4870 checking when given a single method group with pattern *. (thanks
4872 * on x86 compiler supports stack allocation of results of simple
4873 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4874 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4875 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4876 * fixed some bugs related to Unicode integration:
4877 ** the restarts for recovering from input and output encoding
4878 errors only appear when there is in fact such an error to
4880 * fixed some bugs revealed by Paul Dietz' test suite:
4881 ** MISC.549 and similar: late transformation of unsafe type
4882 assertions into derived types caused unexpected code
4884 ** SCALE-FLOAT type deriver is less wrong.
4885 ** type derivers for EXP, LOG and similar functions compute result
4886 types for complex arguments better.
4887 ** (MISC.563) CONJUGATE type deriver works for very restricted
4889 ** out-of-line type testers for character strings are available.
4890 ** EQUAL compiler transform understands specialness of objects
4892 ** accessing double-floats stored on the stack now works on x86-64.
4893 ** debugger internals could sometimes create invalid lispobjs,
4894 resulting in GC crashes.
4895 ** MISC.548: type check weakening can convert required type into
4897 ** initialization forms for bindings are not in scope of free special
4900 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4901 * incompatible change: thread support for non-NPTL systems has
4902 been removed - locking is buggy and unreliable. A threaded
4903 SBCL build will now warn at startup and refuse to create
4904 new threads, unless futex support is detected in the kernel
4905 * incompatible change: the top level REPL now has only an ABORT
4906 restart associated with it, not TOPLEVEL and ABORT as it used to.
4907 TOP and TOPLEVEL are now available as debugger commands for
4908 returning to the top level.
4909 * incompatible change: forms evaluated in the REPL now use the
4910 global optimization policy.
4911 * incompatible change: user- and system-initialization files are
4912 no longer processed with LOAD, but by READ and EVAL; hence the
4913 global optimization policy, startup package, readtable, etc,
4915 * The .fasl file format number has been incremented because of
4916 various incompatible changes.
4917 * internal entry point details and argument counts no longer appear
4918 in backtraces unless explicitly requested by setting
4919 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4920 * built-in and standard functions no longer have names like "top
4921 level local call to FOO".
4922 * fixed bug 32: functions defined in non-null lexical environments
4923 now have more legible printed representation
4924 * fixed bug 33: functions defined in non-null lexical environemnts
4925 are now more amenable to inspection by INSPECT.
4926 * workaround for bug 354: XEPs no longer appear in backtraces unless
4927 explicitly requested.
4928 * fixed bug: receiving the signal which results from attempting to
4929 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4930 SIGBUS on other *BSDs) on architectures where the C stack is also
4931 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4932 to debugger confusion or wild instability. (reported by Cheuksan
4934 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4935 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4936 (reported by Lutz Euler)
4937 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4938 compiled code. (reported by Paul Dietz)
4939 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4940 specialized parameter to a method to something that is not TYPEP
4941 the specializer is now possible.
4942 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4943 face of package deletion.
4944 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4945 pathname. (reported by David Tolpin on c.l.l)
4946 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4947 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4948 STRING-STREAM and FILE-STREAM, respectively.
4949 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4950 than previously; in addition, its test suite is now run on build.
4951 (thanks to Luke Gorrie)
4952 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4953 * optimization: added a immediate representation for single-floats
4955 * fixed some bugs revealed by Paul Dietz' test suite:
4956 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4957 ** attempting to create a package with a colliding nickname causes
4958 correctable errors to be signalled.
4959 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4960 ** several x86-64 backend bugs related to sign-extension of immediate
4963 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4964 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4965 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4967 * fixed loading of multiply forward-referenced layouts.
4968 (thanks to Cheuksan Wang)
4969 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4970 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4971 (see COMPILE-FILE documentation for details of :PRINT option)
4972 * fixed bugs 19 and 317: fixed-format floating point printing is
4973 more accurate. This also fixes a bug reported by Adam Warner
4974 related to the ~@F format directive.
4975 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4977 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4978 dispatch table if the from-char is a dispatch macro character.
4979 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4980 by the wordsize no longer ignore the last word. (reported by Lutz
4982 * fixed bug in type checking of dynamic-extent variables. (reported
4984 * optimization: sequence traversal functions use their freedom to
4985 coerce function designators to functions.
4986 * optimization: code with many calls to CLOS methods specialized on
4987 CLOS classes has had redundant type checks removed.
4988 * optimization: added declarations to speed up operations that access
4989 the internal character database (for example STRING-UPCASE)
4990 * optimization: comparison operations between floats and sufficiently small
4991 fixnums no longer create extra rationals
4992 * fixed some bugs related to Unicode integration:
4993 ** portions of multibyte characters at the end of buffers for
4994 character-based file input are correctly transferred to the
4995 start of the buffer at the next read.
4996 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4997 passing it through to OPEN.
4998 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4999 argument given to internal calls to OPEN.
5000 ** the built-in comment readers (introduced by character sequences
5001 ";" and "#|") are more forgiving to encoding errors; they will
5002 STYLE-WARN and then attempt to resync the stream at a character
5003 boundary. (thanks to Teemu Kalvas)
5004 * fixed some bugs in the x86-64 port:
5005 ** Negative short int return values from c-calls are sign-extended
5007 ** The stack is aligned to 16-bytes for c-calls, as required by
5008 the ABI. (thanks to Cheuksan Wang)
5009 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
5010 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
5011 for enums. (thanks to Vincent Arkesteijn)
5012 ** Multiple small optimizations and bugfixes for floating point
5014 * fixed some bugs revealed by Paul Dietz' test suite:
5015 ** Space, Tab, Linefeed, Return and Page have the invalid
5016 secondary constituent character trait.
5017 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
5019 ** WITH-INPUT-FROM-STRING should only update the index place on
5021 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
5022 works more reliably.
5023 ** Bit-array operations (BIT-AND and similar) worked incorrectly
5024 with one-dimensional arrays with fill pointers.
5025 ** TYPE-OF failed on a complex with an integer realpart and a
5027 ** compiler failure during type inference for the code of form
5028 (IF (EQL X (THE ...)) ...) (MISC.535).
5030 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
5031 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
5032 platform. The port supports 61-bit fixnums, large memory spaces
5033 and reloading shared object files.
5034 * enhancement: saving cores with foreign code loaded is now
5035 supported on ppc/Darwin in addition to the previously supported
5037 * enhancement: the statistical profiler now walks deeper into the
5038 call stack for more meaningful call-graphs and accrued time
5039 reports (x86/x86-64 only). It also now reports time spent in
5041 * enhancement: it is now possible to trace most individual methods
5042 of a generic function in addition to tracing the generic function
5044 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
5046 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
5047 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
5048 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
5049 produces an error. (thanks to Vincent Arkesteijn)
5050 * bug fix: NAMESTRING on pathnames with :WILD components in their
5051 directories works correctly. (thanks to Artem V. Andreev)
5052 * fixed bug 125: compiler preserves identity of closures. (reported
5054 * bug fixed: functions with &REST arguments sometimes failed with
5055 "Undefined function" when compiled with (DEBUG 3). (reported by
5057 * bug fix: overflow during compiling of setting element of a bit
5058 vector with constant index and value. (reported by Timmy Douglas)
5059 * build fix: fixed the dependence on *LOAD-PATHNAME* and
5060 *COMPILE-FILE-PATHNAME* being absolute pathnames.
5061 * on x86 compiler partially supports stack allocation of dynamic-extent
5063 * GO and RETURN-FROM do not check the extent of their exit points
5064 when compiled with SAFETY 0.
5065 * fixed some bugs related to Unicode integration:
5066 ** encoding and decoding errors are now much more robustly
5067 handled; it should now be possible to recover even from invalid
5068 input or output to the terminal. (thanks to Teemu Kalvas)
5069 ** provided a first cut at implementing STRING-TO-OCTETS and
5070 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
5071 ** altered the SB-MD5 contributed module slightly, changing the
5072 interface just enough for it to be supportable for builds where
5073 lisp characters are not eight bits.
5074 * fixed some bugs revealed by Paul Dietz' test suite:
5075 ** the FORMATTER-generated functions for ~V[ conditionals require
5076 the correct number of arguments.
5077 ** READ-FROM-STRING returns the mandated second value when applied
5078 to displaced strings.
5079 ** the #\Rubout and #\Backspace characters are treated as invalid
5080 constituent characters by the tokenizer.
5082 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
5083 * new feature: reloading changed shared object files with
5084 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
5085 * new feature: references to foreign variables and functions
5086 can now be compiled and loaded before the corresponding shared
5087 object file is loaded, as long as the foreign definitions are
5088 available at runtime.
5089 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
5090 supported. (thanks to Dan Debertin)
5091 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
5092 just keywords. (thanks to Vincent Arkesteijn)
5093 * fixed bug #331: structure-class instances corresponding to
5094 DEFSTRUCT forms are now created eagerly.
5095 * fixed bug #345: backtraces from calls to undefined functions work
5096 on x86 as well. Related bug #61 is now also partially fixed on x86
5097 (backtraces from throws to unknown catch tags.)
5098 * bug fix: lambda-list parsing is now stricter vrt. order and number
5099 of lambda-list keywords.
5100 * bug fix: as specified by AMOP, an error is signalled if a
5101 class-option appears multiple times in a DEFCLASS form. (reported
5103 * bug fix: RANDOM can be compiled when the compiler derives the type
5104 of its numeric argument as a disjoint set of small integers.
5105 (reported by Paul Dietz)
5106 * bug fix: starting a core saved with shared objects loaded when
5107 those objects are not available no longer causes threaded SBCL to
5108 hang. (reported by Sean Ross)
5109 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
5111 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
5112 argument, which must always be NIL. (reported by Kalle Niemitalo)
5113 * bug fix: printing 1.0d+23 no longer results in an error.
5114 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
5115 * bug fix: structure slot setters preserve evaluation order. (thanks
5117 * fixed some bugs related to Unicode integration:
5118 ** RUN-PROGRAM can allow its child to take input from a Lisp
5119 stream. (reported by Stefan Scholl)
5120 ** ASDF-INSTALL successfully downloads .tar.gz files in all
5121 locales. (reported by Ken Causey)
5122 * fixed some bugs revealed by Paul Dietz' test suite:
5123 ** INCF, DECF and REMF evaluate their place form as specified in
5125 ** FORMATTER expands ~{ ~} iteration directives with V or #
5126 parameters correctly.
5127 ** FORMATTER deals with the ~@[ ~] conditional directive where the
5128 consequent uses no arguments correctly.
5129 ** the system has a partial understanding of the (COMPLEX RATIO)
5131 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
5134 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
5135 * new feature: a build-time option (controlled by the :SB-UNICODE
5136 keyword feature, enabled by default) for building the system with
5137 support for the entire 21-bit character space defined by the
5139 * new feature: the system now has rudimentary external-format
5140 support; the primary user-visible change at this time is that
5141 characters with the high bit set (such as lower-case-e-acute) will
5142 print correctly to a terminal in a UTF-8 environment.
5143 * minor incompatible change: BASE-CHAR no longer names a class;
5144 however, CHARACTER continues to do so, as required by ANSI.
5145 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
5146 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
5147 has been moved to the SB-EXT package (temporarily re-exported from
5149 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
5150 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
5152 * fixed bug #351: better error-handlind and reporting for malformed
5154 * fixed bug #350: bignum-printing is now more memory-efficient,
5155 allowing printing of very large bignums, eg. (expt 2 10000000).
5156 (reported by Bruno Haible)
5157 * fixed bug #302: better primitive-type selection for intersection
5159 * fixed bug #308: non-graphic characters now all have names, as
5160 required. (reported by Bruno Haible)
5161 * bug fix: redefining a class with different superclasses now correctly
5162 removes it from the direct-subclasses of its previous superclasses.
5163 (reported by David Morse)
5164 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
5165 new value now works. (reported by Bruno Haible)
5166 * bug fix: correct canonicalization of multiple non-standard slot
5167 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
5168 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
5169 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
5170 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
5171 now exists, an signals an error.
5172 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
5173 during macroexpansion for non-iteration variables as well. (reported
5174 by Bruno Haible for CMUCL)
5175 * bug fix: Cyclic structures and unprintable objects in compiler
5176 messages no longer cause errors. (reported by Bruno Haible)
5177 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
5178 and READ-FROM-STRING all now return a primary value of NIL if
5179 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
5180 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
5181 (reported by Bruno Haible for CMUCL)
5182 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
5183 do not designate a condition. (reported by Bruno Haible for
5185 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
5186 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
5187 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
5188 permitting resolution in favour of any of the conflicting symbols.
5189 (reported by Bruno Haible for CMUCL)
5190 * bug fix: EQUAL compiler optimizations is less aggressive on
5191 strings which can potentially compare true despite having distinct
5192 specialized array element types.
5193 * bug fix: unit enumerations can be defined without dividing by
5194 zero. (thanks to Vincent Arkesteijn)
5195 * FORMAT compile-time argument count checking has been enhanced.
5196 (report from Bruno Haible for CMUCL)
5197 * a partial workaround for the bug 262: the compiler does not try to
5198 inline-expand a local function doing RETURN-FROM from a deleted
5199 BLOCK. (thanks to Peter Denno for the bug report and to David
5200 Wragg for the simple test case)
5201 * fixed some bugs revealed by Paul Dietz' test suite:
5202 ** RENAME-PACKAGE allows all package designators as new package
5204 ** constraint propagation and lambda variable substitution are
5205 more cautious in dealing with partially deleted code.
5206 ** compiler sometimes lost reoptimization passes.
5207 ** CERROR, given a condition as condition designator, passes its
5208 remaining arguments to the continue format control without
5210 ** Case-altering FORMAT directives work correctly on non-ASCII
5212 ** The REAL type specifier handles bounds outside the floating
5213 point ranges without signalling FLOATING-POINT-OVERFLOW.
5214 ** Functions with IR1-transformations can create intercomponent
5215 references to global functions.
5216 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
5218 ** FORMAT ~R treats a nil value for its first parameter correctly.
5220 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
5221 * enhancement: saving cores with foreign code loaded is now
5222 supported on x86/NetBSD and sparc/Linux in addition to the previously
5223 supported platforms.
5224 * bug fix: on some platforms repeated installations caused multiple
5225 copies of HTML documentation to be installed -- should not happen
5226 any more. (reported by Stefan Scholl)
5227 * bug fix: parsing self-recursive alien record types multiple times
5228 no longer causes infinite recursion. (reported by Thomas F. Burdick,
5229 original patch by Helmut Eller for CMUCL)
5230 * bug fix: stack-exhaustion detection works now on NetBSD as well.
5231 (thanks to Richard Kreuter)
5232 * bug fix: defining classes whose accessors are methods on existing
5233 generic functions in other (locked) packages no longer signals
5234 bogus package lock violations. (reported by François-René Rideau)
5235 * bug fix: special variables as DEFMETHOD parameters no longer have
5236 associated bogus type declarations. (reported by David Wragg and
5238 * bug fix: read-write consistency on streams of element-type
5239 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
5240 * bug fix: redefiniton of the only method of a generic function with
5241 no DEFGENERIC no longer emits a full WARNING. In addition,
5242 redefinition of generic functions with no DEFGENERIC to an
5243 incompatible lambda list now signals an error. (thanks to Zach
5245 * bug fix: DEFGENERIC now works even when there's a function of the
5246 same name in an enclosing lexical environment. (thanks to Zach
5248 * fixed compiler failure, caused by instrumenting code during
5249 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
5250 * optimization: added loop analysis and improved register allocation
5251 * fixed some bugs revealed by Paul Dietz' test suite:
5252 ** POSITION on displaced vectors with non-zero displacement
5253 returns the right answer.
5254 ** (SIMPLE-STRING) is a valid type specifier for sequence
5256 ** *PRINT-LEVEL* handling for slotless structures is pedantically
5258 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
5259 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
5261 ** The justification version of the FORMAT ~< directive treats
5262 non-zero minpad parameter correctly.
5264 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
5265 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
5266 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
5267 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
5268 the supported interface.
5269 * new feature: Single-stepping of code compiled with DEBUG 2 or
5270 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
5271 * new feature: saving cores with foreign code loaded is now
5272 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
5273 Timothy Moore's work for CMUCL)
5274 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
5275 parameters to * instead of NIL if no initform is supplied.
5276 (reported by Johan Bockgaard)
5277 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
5278 correctly when FUNCALL appears as the car of the form. Note:
5279 despite this FUNCALL forms are not currently subject to
5280 compiler-macro expansion. (port of Raymond Toy's fix for the
5281 same from CMUCL, reported by Johan Bockgaard)
5282 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
5283 (thanks for Teemu Kalvas)
5284 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
5285 case instead of terminating the iteration (thanks for Julian
5286 Squires, Sean Champ and Raymond Toy)
5287 * bug fix: incorrect expansion of defgeneric that caused a style
5288 warning. (thanks for Zach Beane)
5289 * bug fix: slot accessor effective method computation works properly
5290 for classes with multiple non-standard applicable methods on
5291 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
5292 * on x86 compiler supports stack allocation of results of LIST and
5293 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
5294 CMUCL implementation by Gerd Moellmann)
5295 * fixed some bugs revealed by Paul Dietz' test suite:
5296 ** FORMAT strings with both the ~<~:;~> form of the justification
5297 directive and pretty-printing directives cause an error.
5299 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
5300 * incompatible change: the internal functions
5301 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
5302 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
5303 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
5304 instead of the old functions.
5305 * new feature: on platforms where "dladdr" is available foreign
5306 function names now appear in backtraces. (based on Helmut Eller's
5308 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
5309 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
5311 * documentation: ASDF manual is now distributed with SBCL.
5312 * bug fix: SBCL can now load its contributed modules with REQUIRE
5313 even if the system-provided entries have been removed from
5314 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
5316 * bug fix: backtraces involving undefined functions or assembly
5317 routines are more informative. (thanks to Brian Downing)
5318 * bug fix: mutually referent alien structures now work correctly.
5319 (reported by Rick Taube)
5320 * bug fix: structures defined by WITH-ALIEN can be referred to
5321 within other definitions in the same WITH-ALIEN.
5322 * bug fix: division operators (MOD, TRUNCATE and the like) with
5323 constant zero divisors and integer dividends no longer generate
5325 * bug fix: provide default methods for INPUT-STREAM-P and
5326 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
5327 * bug fix: improve the detection and resolution of MOP metacycles
5328 (where effective method computation depends on the generic function
5329 having its effective method computed). (reported by Bruno Haible)
5330 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
5331 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
5332 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
5333 * bug fix: pathnames with relative directory components can be
5334 represented relative to default pathnames.
5335 * optimization: in taking the GCD of bignums, reduce the two bignums
5336 to approximately the same size (using Euclid's algorithm) before
5337 applying the more sophisticated binary GCD. (thanks to Juho
5339 * optimization: COUNT on bitvectors now operates word-at-a-time.
5340 * optimization: ASH with a positive, but not necessarily constant,
5341 (leftwards) shift, when in a modular context, is compiled to a
5343 * fixed some bugs revealed by Paul Dietz' test suite:
5344 ** FORMAT variable parameters ("~V<char>") are defaulted properly
5345 if the corresponding argument is NIL.
5346 ** FORMAT directives accepting a minpad parameter treat negative
5348 ** literal commas as character parameters to FORMAT directives are
5350 ** literal spaces directly after ~<Newline> directives within a
5351 format-logical-block (~:< ~@:>) do not induce :FILL-style
5352 conditional newlines.
5353 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
5354 as specified: it no longer includes conditional newlines).
5355 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
5357 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
5358 :PER-LINE-PREFIX argument does not evaluate to a string.
5360 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
5361 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
5362 the manual for details; for now, package locks can be disabled by
5363 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
5364 if no major problems are found then it is likely that they will be
5365 compiled in unconditionally.
5366 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
5367 unsupported operators on all platforms. To load a shared library
5368 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
5369 object file, link it into a shared library outside of SBCL and
5370 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
5372 * bug workaround: ROOM T and the GC were not working together
5373 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
5374 reporting facility aren't preserved. That reporting has been
5375 disabled, so now until and unless someone figures out how to make it
5376 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
5377 * minor incompatible change: as threatened around sbcl-0.8.0, the
5378 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
5379 The symbols are also exported from SB-PCL for backwards
5380 compatibility, but more so than before SB-PCL should be treated as
5381 an implementation-internal package.
5382 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
5384 * the SB-SPROF contrib now works on (most) non-x86 architectures.
5385 It is known as of this release not to work on the Alpha, however.
5386 * fixed bug #167: errors signalled due to illegal syntax in method
5387 bodies are now more legible.
5388 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
5389 designators and can hence be used with TYPEP.
5390 * fixed bug #333: CHECK-TYPE now ensures that the type error
5391 signalled, if any, has the right object to be accessed by
5392 TYPE-ERROR-DATUM. (reported by Tony Martinez)
5393 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
5394 5.1.2.3 for multiple-value place subforms. (reported by Kalle
5396 * fixed bug #334: programmatic addition of slots using specialized
5397 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
5398 and :ALLOCATION :CLASS slots.
5399 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
5400 float exponents. (rereported by Peter Seibel)
5401 * fixed a bug: #\Space (and other whitespace characters) are no
5402 longer considered to be macro characters in standard syntax by
5403 GET-MACRO-CHARACTER.
5404 * fixed bug: initialization of condition class metaobjects no longer
5405 causes an instance of the condition to be created. (reported by
5407 * fixed bug: it is now possible to have slots such that
5408 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
5409 description is neither :INSTANCE nor :CLASS.
5410 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
5411 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
5412 SLOT-VALUE-USING-CLASS), and no longer causes errors with
5413 non-standard SLOT-DEFINITION-ALLOCATION values.
5414 * fixed bugs: various race conditions handling exiting threads.
5415 CL-PPCRE's thread torture test now passes.
5416 * fixed arguably-a-bug: GC time proportional to number of threads in
5417 system even when most of them are idle
5418 * optimization: improved performance of BIT and SBIT on bit-vectors.
5419 * .fasl file incompatibility: The fasl file version number has
5420 been incremented because of changes associated with package locks.
5422 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
5423 * minor incompatible change: the system no longer provides
5424 optimization hints (conditions which are TYPEP
5425 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
5426 mode; these hints are still emitted when higher SPEED optimization
5428 * new contrib module: a sampling profiler (profiling by statistical
5429 sampling, rather than by instrumenting functions) is available as
5430 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
5431 * the behaviour of the standard function ED is now customizeable by
5432 third parties through a hook variable: see ED's documentation
5433 string for information on the protocol.
5434 * the compiler no longer emits efficiency notes for (FUNCALL X)
5435 when the type of X is uncertain under default optimization
5437 * fixed bug 276: mutating a binding of a specialized parameter to a
5438 method to something that is not TYPEP the specializer is now
5440 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
5441 exhibit the required behaviour on the x86 platform. (thanks to
5442 Peter van Eynde, Eric Marsden and Bruno Haible)
5443 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
5444 even for difficult arguments. (reported by Peter Graves)
5445 * fixed bug 141a: the backquote printer now descends quoted
5447 * fixed another bug in backquote printing: no more destructive
5448 modification of the form's list structure. (reported by Brian
5450 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
5451 move between its address being taken and the call to
5452 interrupt_thread, fixing a crashing race condition.
5453 * the SB-POSIX contrib implementation has been adjusted so that it
5454 no longer exhibits ridiculously poor performance when constructing
5455 instances corresponding to C structs.
5457 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
5458 * minor incompatible change: the sb-grovel contrib now treats C
5459 structures as alien (in the sense of SB-ALIEN) objects rather than
5460 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
5461 has implications for memory management of client code
5462 (sb-grovel-returned objects must now be manually managed) and for
5463 type safety (alien objects now have full types).
5464 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
5465 used to control emission of compiler diagnostics, rather than the
5466 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
5467 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
5468 quality should be considered deprecated.
5469 * install.sh now installs the user manual as well
5470 * (not quite a new documentable feature, but worth considering in
5471 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
5472 beginnings of a semantically meaningful condition hierarchy is
5473 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
5475 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
5476 designator as the defaults argument.
5477 * fixed bug: Displaced arrays whose displaced-to array has become
5478 too small now cause ARRAY-DIMENSION to signal an error, providing
5479 for safer bounds-checking. (reported by Bruno Haible)
5480 * fixed bug: DEFCLASS slot definitions with identical :READER and
5481 :WRITER names now signal a reasonable error. (reported by Thomas
5483 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
5485 * fixed bug: Invalid slot specification errors now print correctly.
5486 (thanks to Zach Beane)
5487 * fixed bug 320: Shared to local slot value transfers in class
5488 redefinitions now happen corrently from superclasses as
5489 well. (reported by Bruno Haible)
5490 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5492 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5493 improper lists correctly. (reported by Bruno Haible)
5494 * fixed bug 313: source-transform for <fun-name> was erroneously
5495 applied to a call of a value of a variable with name <fun-name>.
5496 (reported by Antonio Menezes Leitao)
5497 * fixed bug 307: The obsolete instance protocol ensures that
5498 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5499 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5500 remove dead unknown-values globs from the middle of the stack.
5501 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5502 easier to resume long computations after using *BREAK-ON-SIGNALS*
5503 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5504 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5505 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5506 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5507 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5508 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5510 * fixed a (fairly theoretical) bug in string printing: if
5511 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5512 does not have array-element-type equal to the most general string
5514 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5515 function name. (thanks to Nikodemus Siivola)
5516 * fixed bug: compile-time format string checker failed on
5517 non-closed ~{. (reported by Thomas F Burdick)
5518 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5519 don't warn on legal loop code involving more than one aggregate
5520 boolean. (thanks to Nikodemus Siivola)
5521 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5522 in keyword position to MAKE-PACKAGE was not being reported as
5524 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5525 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5527 * fixed bugs 280 and 312: the checking for multiple definitions in a
5528 file is less likely to become confused by uses of inline
5530 * fixed bug: the #S reader macro performs the keyword coercion
5531 specified for slot names. (reported by Kalle Niemitalo)
5532 * fixed bug: lambda lists may contain symbols whose names start with
5533 & but are not lambda-list-keywords; their occurrence triggers a
5535 * fixed bug 321: define-method-combination argument lambda lists do
5536 not cause invalid code to be generated when &optional or &aux
5537 variables have default values. (reported by Bruno Haible)
5538 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5539 have CLOS classes; this appears also to have fixed reported
5540 instability in stack exhaustion detection.
5541 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5542 MUFFLE-WARNING when no associated restart is present is now
5544 * optimization: rearranged the expansion of various defining macros
5545 so that each expands into only one top-level form in a
5546 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5548 * optimization: used a previously little-used slot in symbols to
5549 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5551 * fixed some bugs revealed by Paul Dietz' test suite:
5552 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5554 ** Fixed an optimization bug related to inheritance of initforms
5555 from local to shared slots.
5556 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5557 ** CAST optimizer forgot to flush argument derived type.
5558 ** print/read consistency on floats is now orders of magnitude
5559 more likely. (thanks also to Bruno Haible for a similar report
5561 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5562 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5563 for objects of type REAL. Make it so.
5564 ** SXHASH is specified (infelicitously) to respect similarity,
5565 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5566 it so. (thanks to Markus Ziegler)
5567 ** on the Alpha, the compiler succeeds in compiling functions
5568 returning a known number of arguments greater than 63.
5569 ** fixed handling of invalid NIL arguments in keyword position
5571 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5573 ** provided a readably-printable representation for RANDOM-STATE
5575 ** ensured that pathnames, where they have a namestring, always
5576 print using #P"..." syntax.
5578 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5579 * Support for the forthcoming 2.0 version of the NetBSD kernel
5580 running on x86 hardware has been added. (thanks to Perry
5581 E. Metzger most immediately, and others for their past work)
5582 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5583 current release version; SBCL's OpenBSD support had been broken
5584 since about the time of OpenBSD's switch to ELF binary format.)
5585 * [placeholder for DX summary]
5586 ** user code with &REST lists declared dynamic-extent, under high
5587 speed or space and low safety and debug optimization policy.
5588 * The manual has been converted to Texinfo format and the debugger
5589 chapter from the cmucl manual has been added.
5590 * A facility has been added to extract documentation strings from
5591 sbcl and store them as Texinfo-formatted snippets for inclusion in
5592 the manual (via Texinfo's @include directive)
5593 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5594 the test case to Dave Roberts)
5595 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5596 pointers. (reported by Sean Ross)
5597 * bug fix: PROFILE output is printed nicely even for large numerical
5598 values. (thanks to Zach Beane)
5599 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5600 greater than 32 handle EOF correctly.
5601 * bug fix: on X86 an immediate argument of the IMUL instruction is
5602 correctly printed in disassembly. (thanks to Lutz Euler)
5603 * bug fix: class slots in redefined classes preserve their old
5604 values. (thanks to Bruno Haible and Nikodemus Siivola)
5605 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5606 succeeds. (reported by Marco Baringer)
5607 * fixed some bugs revealed by Paul Dietz' test suite:
5608 ** READ-SEQUENCE now works on ECHO-STREAMs.
5609 ** RATIONALIZE works more according to its specification. (thanks
5612 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5613 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5614 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5615 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5616 should matter to you only if you rebind the printer control
5617 variables and then find you want different bindings in the
5618 debugger than in the ordinary execution of your program.)
5619 * The runtime build system has been tweaked to support building
5620 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5621 assembler and linker. (thanks to Nikodemus Siivola)
5622 * Unbound, undefined, undeclared variables now trigger full
5623 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5624 more often programmer error than deliberate exploitation of undefined
5626 * optimization: the hash algorithm for strings has changed to one
5627 that is less vulnerable to spurious collisions. (thanks to Juho
5629 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5630 needless bounds checking. (thanks to Juho Snellman)
5631 * optimization: implemented multiplication as a modular
5632 (UNSIGNED-BYTE 32) operation on the PPC backend.
5633 * fixed some bugs revealed by Paul Dietz' test suite:
5634 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5636 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5637 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5638 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5640 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5642 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5644 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5645 their output stream on EOF from read.
5646 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5647 have been read to end-of-file.
5648 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5650 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5651 description of determination of which consecutive characters
5653 ** Printing the "Space" character with escaping on now yields "#\\ ",
5654 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5655 ** Reading floating-point numbers with *READ-BASE* set to a number
5656 less than 10 works correctly.
5657 ** Reading floating-point numbers with *READ-BASE* set to a number
5658 more than 10 works correctly.
5659 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5660 the readtable currently in effect.
5662 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5663 * minor incompatible change: parsing of namestrings on a physical
5664 (Unix) host has changed; numbers after the final #\. in a
5665 namestring are no longer interpreted as a version field. This is
5666 intented to be largely invisible to the user, except that the
5667 meaning of the namestring "*.*.*" has changed: it now refers to a
5668 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5669 should usually be replaced by
5670 (make-pathname :name :wild :type :wild :version :wild)
5671 with the added benefit that this is more likely to be portable.
5672 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5673 option to OPEN now signals an error if the file being opened
5674 exists; this may have an impact on existing code.
5675 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5676 signals received, on the PowerPC platforms (both Linux and
5677 Darwin). (thanks to Pierre Mai for pointing out the location of
5679 * several fixes on OS X: The system now builds and runs cleanly on
5680 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5681 (thanks to Brian Mastenbrook)
5682 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5683 second-resolution: integer multiples of 1/3600 between -24 and 24.
5684 (thanks to Vincent Arkesteijn)
5685 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5686 type when called with 1 argument; PEEK-CHAR checked type of
5687 PEEK-TYPE only after having read first character from a
5688 stream. (reported by Peter Graves)
5689 * bug fix: the garbage collector now has much better locality
5690 behaviour, and in particular no longer treats all memory as being
5691 exhausted when many small objects point to each other in a deeply
5693 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5694 recognized as being TYPEP their class.
5695 * bug fix: the PUSHNEW documentation string has been corrected.
5696 (thanks to Vincent Arkesteijn)
5697 * bug fix: defaulting of the value for the last of an atypically
5698 large number of multiple values being bound was not being
5699 performed correctly on the Alpha or PPC platforms
5700 * optimization: implemented multiplication as a modular
5701 (UNSIGNED-BYTE 32) operation on the x86 backend.
5702 * optimization: SEARCH on simple-base-strings can now be open-coded.
5703 (see also contrib/compiler-extras.lisp for inspiration for
5704 teaching the compiler about the Boyer-Moore algorithm).
5705 * value, returned by MAX (and MIN) called with several EQUALP, but
5706 not EQL, arguments now does not depend on compiler settings.
5707 * fixed some bugs revealed by Paul Dietz' test suite:
5708 ** in stack analysis liveness information is propagated from
5709 non-local entry points.
5710 ** pathwise CAST removing failed when the CAST node did not start
5712 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5713 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5715 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5716 host is already defined.
5717 ** RENAME-FILE works on streams instead of signalling an internal
5719 ** PEEK-CHAR uses the current readtable when determining whether
5720 or not a character is whitespace.
5721 ** MERGE-PATHNAMES handles the case when the pathname does not
5722 specify a name while the default-pathname specifies a version.
5723 ** Pathnames now stand a better chance of respecting print/read
5725 ** Attempting to use standardized file system operators with a
5726 pathname with invalid :DIRECTORY components signals a
5728 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5730 ** DIRECTORY on logical pathnames is more correct.
5731 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5732 signal a TYPE-ERROR if their argument is not a stream.
5733 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5734 designator argument does not designate a stream.
5735 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5736 examining the synonym.
5737 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5739 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5740 element-type larger than ([UN]SIGNED-BYTE 32).
5742 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5743 * When built with the :SB-FUTEX feature, threaded builds now take
5744 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5745 for faster/more reliable mutex and condition variable support.
5746 * Incompatible change (but one you probably shouldn't have been using
5747 anyway): the interface and code for arbitrating between multiple
5748 threads in the same user session has been redesigned.
5749 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5750 error when called without an explicit environment argument.
5751 (thanks to Nikodemus Siivola)
5752 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5753 confused about their position. (thanks to Adam Warner and Gerd
5755 * bug fix: Pretty printing backquoted forms with unquotations in the
5756 argument list position of various code constructs such as LAMBDA
5757 now works correctly. (reported by Paul Dietz)
5758 * bug fix: Pretty printing unquotations no longer loses all
5759 stream position information.
5760 * optimization: performance of string output streams is now less
5761 poor for multiple small sequence writes.
5762 * optimization: performance of CSUBTYPEP in the presence of complex
5763 expressions involving CONS and NOT many times has been improved.
5764 (reported by Paul Dietz)
5765 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5767 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5768 streams for the REPL, for the debugger, and so on. (thanks to
5770 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5771 * fixed some bugs revealed by Paul Dietz' test suite:
5772 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5773 is ignored if it is too small, rather than propagating through
5774 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5775 ** extremely complex negations of CONS types were not being
5776 sufficiently canonicalized, leading to inconsistencies in
5778 ** VALUES tranformer lost derived type.
5780 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5781 * fixed a bootstrapping bug: the build process no longer assumes
5782 that the various BOOLE-related constants have the same value in
5783 host and target lisps. (noted by Paul Dietz' test suite on an
5784 SBCL binary built from CLISP)
5785 * The system can now be dynamically linked on the MIPS platform,
5786 which enables dynamic loading of foreign code from Lisp. (thanks
5787 to Ralf Baechle for discussions on the MIPS ABI)
5788 * The system now records debugging information for its own source
5789 files in a filesystem-position-independent manner, relative to
5790 the "SYS" logical host.
5791 * fixed a compiler bug: MV-LET convertion did not check references
5792 to the "max args" entry point. (reported by Brian Downing)
5793 * tweaked disassembly notes to be less confident about proclaiming
5794 some instruction as an LRA. (thanks to Brian Downing)
5795 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5796 now each have their own history, command character, and other
5797 characteristics. (thanks to David Lichteblau)
5798 * fixed some bugs revealed by Paul Dietz' test suite:
5799 ** compiler failure in compiling LOGAND expressions including a
5801 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5802 shift greater than 32.
5803 ** FLUSH-DEST did not mark blocks for type check regeneration.
5804 ** HANDLER-CASE failed to accept declarations in handler clauses
5805 in some circumstances.
5807 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5808 * New code in contrib/sb-introspect (still probably not entirely
5809 stable yet) provides some support for smart Lisp development
5810 environments like SLIME.
5811 * The conditions signalled for errors occurring when loading .fasl
5812 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5813 in a way which should help ASDF recover gracefully.
5814 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5815 stuff has been cleaned up. If you code contrib/ stuff, this might
5816 affect you, and you can look at contrib/README, contrib/STANDARDS,
5817 and/or the 0.8.4.27 diff to check.
5818 * In full calls the compiler now does not generate checks for declared
5819 argument types for all arguments.
5820 * various threading fixes
5821 ** and some experimental patches which didn't make it into
5822 the main tree for this release, but which are shipped in
5823 contrib/experimental-thread.patch as a possible fix for some
5824 failures (deadlock, spinning...) in GC-intensive multithreaded
5826 * fixed PPC build problem (source code incompatibility of different
5827 library versions): added offsetof() hackery which attempts to divine
5828 where glibc maintainers put uc_mcontext today
5829 * fixed bug 282: compiler does not trust type assertions while passing
5830 arguments to a full call.
5831 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5832 &OPTIONAL VALUES type parameter.
5833 * fix bug 214: algorithm for noting rejected templates is now more
5834 similar to that of template seletion. (also reported by rydis on
5836 * fixed bug 141b: printing backquoted information readably and prettily
5837 inserts a space where necessary.
5838 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5839 (CHARACTER 10) are now reported as errors, rather than propagated
5840 as unknown types. (reported by piso on #lisp)
5841 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5842 with values NIL and :ERROR. (thanks to Milan Zamazal)
5843 * fixed bug 191c: CLOS now does proper keyword argument checking as
5844 described in CLHS 7.6.5 and 7.6.5.1.
5845 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5846 longer raise an error; further, using a list as a for-as-arithmetic
5847 counter now raises a meaningful error.
5848 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5849 now understood by sequence creation functions such as MAKE-SEQUENCE
5851 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5852 a STRING-INPUT-STREAM.
5853 * compiler enhancement: SIGNUM is now better able to derive the type
5855 * type declarations inside WITH-SLOTS are checked. (reported by
5857 * fixed some bugs revealed by Paul Dietz' test suite:
5858 ** incorrect optimization of TRUNCATE for a positive first
5859 argument and negative second.
5860 ** compiler failure in let-convertion during flushing dead code.
5861 ** compiler failure while deriving type of TRUNCATE on an
5862 interval, containing 0.
5863 ** ASH of a negative bignum by a negative bignum count now returns
5865 ** intersection of CONS types now canonicalizes properly, fixing
5866 inconsistencies in SUBTYPEP.
5868 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5869 * incompatible change: The --disable-debugger command line
5870 option now clobbers the debugger at a more fundamental
5871 level, by redefining #'INVOKE-DEBUGGER instead of by
5872 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5873 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5874 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5875 enter the debugger REPL and then suffer recursive errors
5876 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5877 while under the new system, BREAK in --disable-debugger mode
5878 terminates the system just as an unhandled error would.
5879 * fixed compiler performance when processing loops with a step >1;
5880 * bug fix: DOCUMENTATION now retrieves generic function
5881 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5882 support has been systematized, and now supports the methods
5883 specified by ANSI, along with a default method and a method for
5884 slot documentation. (reported by Nathan Froyd)
5885 * bug fix: effective methods associated with a generic function are
5886 no longer cached over a change of that generic function's method
5887 combination. (reported by Andreas Fuchs)
5888 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5889 names a non-existent directory. (thanks to Andreas Fuchs)
5890 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5891 the PPC platform, lead to stack corruption; this has been fixed.
5892 (reported by Rainer Joswig)
5893 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5894 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5895 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5896 arithmetic in general, is now much more reliable on the PPC
5898 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5899 platform now returns the right answer.
5900 * optimization: restored some effective method precomputation in
5901 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5902 precomputation is now tunable.
5903 * optimization: compiler-internal data structure use has been
5904 reviewed, and changes have been made that should improve the
5905 performance of the compiler by about 20%.
5906 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5907 simple-base-strings and simple-bit-vectors is improved.
5908 * optimization: the optimization of 32-bit logical and arithmetic
5909 functions introduced in version 0.8.3 on the x86 has been
5910 implemented on the mips, ppc and sparc platforms; an
5911 implementation of the same facility, but for 64-bit arithmetic,
5912 has been added for the alpha.
5913 * microoptimization: the compiler is better able to make use of the
5914 x86 LEA instruction for multiplication by constants.
5915 * bug fix: in some situations compiler did not report usage of
5916 generic arithmetic in (SPEED 3) policy.
5917 * bug 145b fix: compiler used wrong type specifier while converting
5918 MEMBER-types to numeric.
5919 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5921 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5922 index argument now works properly on the Alpha platform.
5923 * bug fix: floating point exception treatment on the Alpha platform
5925 * bug fix: FILE-POSITION works much better on string input and
5926 output streams. (thanks to Nikodemus Siivola)
5927 * bug fix: many threading/garbage collection symptoms sorted.
5928 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5929 might be pseudo-atomic.
5930 * internal change: Stopping for GC is now done with signals not
5931 ptrace. GC is now done in whichever thread wanted it, instead of
5933 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5935 * bug fix: result form in DO is not contained in the implicit
5937 * incompatible change: ICR structure is changed; the value part of
5938 CONTINUATION is now called LVAR; corresponding functions are
5939 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5940 * added type deriver for ISQRT (thanks to Robert E. Brown).
5941 * bug fix: better support for loading from the command line when an
5942 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5944 * fixed some bugs revealed by Paul Dietz' test suite:
5945 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5946 ** ROUND and FROUND now give the right answer when given very
5947 small float arguments.
5948 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5950 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5951 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5952 ** LCM should return a non-negative integer.
5953 ** PARSE-INTEGER returned the index of a terminator instead of the
5954 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5955 ** PARSE-INTEGER returned an incorrect index being applied to a
5957 ** LCM with two arguments of 0 returns 0 rather than signalling
5959 ** unsigned addition of a 32-bit constant with the high bit set no
5960 longer causes an internal compiler error on the x86.
5961 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5962 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5963 with negative last argument.
5964 ** byte specifiers with zero size and position no longer cause
5965 an error during type derivation.
5966 ** bignum multiplication on the Alpha platform now returns the
5968 * porting: The system now builds on SuSE AMD64, although it still
5969 generates a 32-bit binary.
5970 * .fasl file incompatibility: The fasl file version number has
5971 been incremented (because of the changes to internal compiler
5972 data structures referred to above).
5974 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5975 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5976 more accurately, on the Darwin kernel running on PowerPC hardware.
5977 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5978 * Compiler code deletion notes now signal a condition of type
5979 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5980 an associated MUFFLE-WARNING restart.
5981 * The compiler now performs limited argument count validation of
5982 constant format strings in FORMAT, and where appropriate in ERROR,
5983 CERROR and WARN. (thanks to Gerd Moellmann)
5984 * New ASDF-INSTALL contrib can be used for automatic download and
5985 installation of third-party Lisp code from CCLAN or other sites
5987 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5988 which forces another thread to execute a function supplied by the
5990 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5991 now accept and act upon their :ELEMENT-TYPE keyword argument.
5992 (reported by Martin Atzmueller, Edi Weitz)
5993 * bug fix: FILE-POSITION now accepts position designators up to
5994 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5995 is the greater. (thanks to Patrik Nordebo)
5996 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5997 Kalle Olavi Niemitalo)
5998 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5999 printable. (reported by Eric Marsden)
6000 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
6001 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
6002 * x86 bug fix in control stack exhaustion checking: now shows backtrace
6003 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
6004 (thanks to Stig Sandoe)
6005 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
6006 UNREAD-CHAR now correctly includes the unread character in the
6007 target sequence. (thanks to Gerd Moellmann)
6008 * bug fix in threaded builds: the system can now be suspended and
6009 resumed by shell job control with minimal disruption.
6010 * bug fixes in times and timezones >2038AD
6011 * better handling of "where is GNU make?" problem in build scripts
6012 (thanks to Nikodemus Siivola)
6013 * new optimization: inside a named function any reference to a
6014 function with the same name is considered to be a self-reference;
6015 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
6016 optimization quality.
6017 * new optimization on x86: logical functions and + now have
6018 optimized (UNSIGNED-BYTE 32) versions, which are automatically
6019 used when the result is truncated to 32 bits.
6020 * VALUES declaration is partially enabled.
6021 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
6022 * fixed some bugs revealed by Paul Dietz' test suite:
6023 ** The system now obeys the constraint imposed by
6024 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
6025 types form a lattice under type intersection.
6026 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
6027 ** ASSOC now ignores NIL elements in an alist.
6028 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
6029 and (1+ MOST-POSITIVE-FIXNUM) answers.
6030 ** The addition of a method with invalid qualifiers to a generic
6031 function does not cause an error to be signalled immediately;
6032 a warning is signalled, and the error is generated only on
6033 calling the generic function.
6034 * changed .fasl file version number, in part to add type codes for
6035 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
6036 obscure ANSI requirements
6038 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
6039 * fixed bug 148: failure to inline-expand a local function left
6040 garbage, confusing the compiler.
6041 * fixed bugs 3cd: structure slot readers perform type check if the
6042 slot can have an invalid value (i.e. it is either not initialized
6043 or can be written with a less specific slot writer).
6044 * bug fix: the compiler now traps array references to elements off
6045 the end of an array; previously, the bounds checking in some
6046 circumstances could go off-by-one.
6047 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
6049 * type declarations for array element types now obey the description
6050 on the CLHS page "Declaration TYPE", as per discussions on
6051 sbcl-help around 2003-05-08. This means that a declaration
6052 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
6053 declaration, all references to BAR will be asserted or assumed
6054 (with THE, so dependent on compiler policy) to involve objects of
6055 type FOO. Note that no such declaration is implied in
6056 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
6057 * declared types of functions from the "Conditions"
6058 chapter. (reported by Paul Dietz)
6059 * bug fix: CERROR accepts a function as its first argument.
6060 * bug fix: NTH an NTHCDR accept a bignum as index
6061 arguments. (reported by Adam Warner)
6062 * optimization: character compare routines now optimize comparing
6063 against a constant character. (reported by Gilbert Baumann)
6064 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
6065 argument now works properly on the MIPS platform.
6066 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
6067 * repeated evaluation of the same DEFSTRUCT, a slot of which is
6068 declared to have a functional type, does not cause an error
6070 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
6071 many :DEFAULT-INITARGS. (reported by Istvan Marko)
6072 * fixed bug: if last continuation of a deleted block has a
6073 destination, this destination should be deleted too. (reported by
6075 * fixed a bug in the bootstrap process: the host compiler's values
6076 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
6077 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
6078 test case from Patrik Nordebo)
6079 * improved the ability of the disassembler on the PPC platform to
6080 provide helpful disassembly notes.
6081 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
6082 the class in more cases than previously.
6083 * bug fix: FILE-POSITION now understands :START and :END for
6084 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
6085 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
6086 8) data. (thanks to David Lichteblau)
6087 * bug fix: it is possible to add a method to a generic function
6088 without lambda list.
6089 * bug fix: reader failed to signal END-OF-FILE inside an
6090 object representation. (reported by Nikodemus Siivola)
6091 * fixed some bugs revealed by Paul Dietz' test suite:
6092 ** LAST and [N]BUTLAST should accept a bignum.
6093 ** condition slot accessors are methods.
6094 ** (VECTOR NIL) is a subtype of STRING.
6096 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
6097 * minor incompatible change: some nonsensical specialized lambda
6098 lists (used in DEFMETHOD) which were previously ignored now signal
6100 * minor incompatible change: the system is now aware of the types of
6101 variables in the COMMON-LISP package, and will signal errors for
6102 most violations of these type constraints (where previously they
6103 were silently accepted).
6104 * minor incompatible change: COMPILE-FILE now uses the freedom
6105 afforded (ANSI 3.2.2.3) to use derived function types for
6106 functions defined in the same file. This also permits the system
6107 to warn on static type mismatches and function
6108 redefinition. (Currently it does not work with high DEBUG level.)
6109 * minor incompatible change: VALUES declaration is disabled.
6110 * When issuing notes, the compiler now signals a condition of type
6111 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
6112 restart for use in user handlers. It is expected that the
6113 COMPILER-NOTE condition will eventually become a condition
6114 supertype to a hierarchy of note types, which will then be
6115 handleable in a similar fashion. However, at the moment, no such
6116 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
6117 but it's an implementation detail, not a classification for the
6119 * Changes in type checking closed the following bugs:
6120 ** type checking of unused values (192b, 194d, 203);
6121 ** template selection based on unsafe type assertions (192c, 236);
6122 ** type checking in branches (194bc).
6123 * A short form of VALUES type specifier has ANSI meaning (it has
6124 increased the number of situations when SBCL cannot perform type
6126 * fixed bug in DEFSTRUCT: once again, naming structure slots with
6127 keywords or constants is permissible.
6128 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
6129 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
6130 classes. (thanks to Antonio Martinez)
6131 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
6132 outputs FRESH-LINE or TERPRI, and no longer converts its stream
6133 argument to a pretty-print stream. Instead, it leaves any such
6134 operations to DESCRIBE-OBJECT methods.
6135 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
6137 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
6138 lambda lists. (thanks to David Lichteblau)
6139 * bug fix: Defining a generic function with a :METHOD-CLASS being a
6140 subclass of STANDARD-METHOD no longer causes stack exhaustion.
6141 (thanks to Gerd Moellmann)
6142 * fixed bug 246: increased compilation speed of long
6143 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
6145 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
6147 * DEFCONSTANT now throws a condition of type
6148 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
6149 constant to a non-EQL value; CONTINUE and ABORT restarts
6150 respectively change and preserve the value.
6151 * fixed bug 63: The code walker, part of the implementation of CLOS,
6152 is now better at handling symbol macros.
6153 * bug fix: There is no longer an internal implementation type named
6154 CL:LENGTH. (reported by Raymond Toy)
6155 * bug fix: In macro-like defining macros/special operators the
6156 implicit block does not enclose the lambda list.
6157 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
6158 enclosed in parentheses) are not suitable as type specifiers, and
6159 their use properly signals an error now.
6160 * bug fix: An argument count mismatch for a type specifier in code
6161 being compiled no longer causes an unhandled error at compile
6162 time, but signals a compile-time warning.
6163 * fixed simple vector readable printing
6164 * bug fix: DESCRIBE takes more care over whether the class
6165 precedence list slot of a class is bound before accessing it.
6166 (reported by Markus Krummenacker)
6167 * bug fix: FORMATTER can successfully compile pretty-printer format
6168 strings which use variants of the ~* directive inside.
6169 * bug fix: SEARCH now applies its TEST predicate to the elements of
6170 the arguments in the correct order. (thanks to Wolfhard Buss)
6171 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
6172 in type inference. (thanks to Robert E. Brown)
6173 * bug fix: Reading in symbols with an explicit package name of ""
6174 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
6175 * fixed some bugs revealed by Paul Dietz' test suite:
6176 ** NIL is now allowed as a structure slot name.
6177 ** Arbitrary numbers, not just REALs, are allowed in certain
6178 circumstances in LOOP for-as-arithmetic clauses.
6179 ** Multiple class redefinitions before slot access no longer
6180 causes a type error.
6181 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
6182 association between the name and a class.
6183 ** Generic functions with non-standard method-combination and over
6184 five methods all of which return constants no longer return NIL
6185 after the first few invocations. (thanks to Gerd Moellmann)
6186 ** CALL-NEXT-METHOD with no arguments now passes the original
6187 values of the arguments, even in the presence of assignment.
6188 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
6190 ** DISASSEMBLE works with closures and funcallable instances.
6191 ** ADD-METHOD now returns the generic function, not the new method.
6192 ** FIND-METHOD signals an error if the lengths of the specializers
6193 is incompatible with the generic function, even if the ERRORP
6195 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
6196 which its argument is a member.
6197 ** DEFCLASS only redefines the class named by its class-name
6198 argument if that name is the proper name of the class;
6199 otherwise, it creates a new class.
6200 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
6201 of the UNBOUND-SLOT condition to the name of the slot.
6202 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
6203 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
6204 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
6205 SLOT-MAKUNBOUND in the specified fashion.
6207 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
6208 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
6209 cross-compilation host. As a consequence, we can now bootstrap our
6210 way up to SBCL starting with a bare gcc toolchain and human-readable
6211 source code (first the source to CLISP, then the source to SBCL).
6212 * A contributed module containing a partial implementation of the
6213 simple-streams interface has been included. (thanks to Rudi
6215 * A contributed module implementing the RFC1321 Message Digest
6216 Algorithm, known as MD5, has been included.
6217 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
6218 no longer has any effect, as the code controlled by this feature
6219 has been deleted. (As far as we know, no-one has ever built using
6220 this feature, and its semantics were confused in any case).
6221 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
6222 work on conditions (as required by the ANSI specification),
6223 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
6224 expected behaviour on conditions. Users should note, however,
6225 that such behaviour is not required by the ANSI specification,
6226 and so use of this behaviour may render their code unportable.
6227 * fixed some bugs revealed by Paul Dietz' test suite:
6228 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
6230 ** &ENVIRONMENT parameter in macro lambda list is bound first.
6231 ** SXHASH on condition objects no longer returns NIL.
6232 ** :ALLOCATION :CLASS slots are better treated; their values are
6233 updated on class redefinition, and initforms inherited from
6234 superclasses are applied.
6235 ** REMOVE-METHOD returns its generic function argument even when
6236 no method was removed.
6237 ** SHARED-INITIALIZE now initializes the values of the requested
6238 slots, including those with :ALLOCATION :CLASS.
6239 ** ALLOCATE-INSTANCE now works on structure classes defined via
6240 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
6242 ** SLOT-EXISTS-P now works on conditions, as well as structures
6244 ** MAKE-LOAD-FORM now has the required methods on
6245 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
6246 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
6247 keyword, and now implements the SLOT-NAMES argument.
6248 ** methods with &OPTIONAL arguments no longer allow too many
6249 arguments to be passed in the call without error.
6250 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
6251 option is consistent with the required arguments of the generic
6252 function lambda list.
6253 * bug fix: REQUIRE accepts a string designator. (Thanks to
6255 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
6256 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
6257 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
6258 * bug fix: The compiler now checks for duplicated variables in macro
6260 * bug fix: SETQ on globals returns the correct value.
6261 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
6262 not a COMPILER-ERROR (followed by some other strange error on
6263 choosing the CONTINUE restart).
6264 * bug fix: make.sh and friends are now more consistent in the way that
6265 they look for GNU "make".
6267 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
6268 * experimental native threads support (on x86 Linux >=2.4 only).
6269 This is not compiled in by default: you need to add :SB-THREAD to
6270 the target features. See the "Beyond ANSI" chapter of the manual
6272 * fix for longstanding nonANSIism: The old distinction between
6273 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
6274 The return value from CL:FIND-CLASS is now a CLOS class, and
6275 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
6276 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
6277 * An interface to the MetaObject Protocol, as described in Kiczales,
6278 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
6279 MIT Press, 1991, is available from the SB-MOP package.
6280 * incompatible change: the SB-PCL package should now be considered
6281 a private implementation detail, and no longer a semi-private MOP
6283 * minor incompatible change: due to rearrangement for threads, the
6284 control stack and binding stack are now allocated at arbitrary
6285 addresses instead of being hardcoded per-port. Users affected by
6286 this probably have to be doing advanced things with shared
6287 libraries, and will know who they are.
6288 * minor incompatible change: Previously, all --eval forms used were
6289 processed with READ before any of them were processed with EVAL.
6290 Now each --eval form is processed with both READ and EVAL before
6291 the next --eval form is processed. (Thus package operations like
6292 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
6293 work as the user might reasonably expect.)
6294 * minor incompatible change: *STANDARD-INPUT* is now only an
6295 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
6297 * minor incompatible change: Y-OR-N-P is now character-oriented,
6298 not line oriented. Also, YES-OR-NO-P now works without errors.
6299 (thanks to Antonio Martinez)
6300 * sb-aclrepl module improvements: an integrated inspector, added
6301 repl features, and a bug fix to :trace command.
6302 * Known functions, which cannot be open coded by the backend, are
6303 considered to be able to check types of their arguments. (fixing
6304 a bug report by Nathan J. Froyd)
6305 * fixed a bug in computing method discriminating functions: It is
6306 now possible to define methods specialized on classes which have
6307 forward-referenced superclasses. (thanks to Gerd Moellmann)
6308 * fixed evaluation order in optional entries (reported by Gilbert
6310 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
6311 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
6312 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
6313 required-by-AMOP NAME argument, as well as CLASS and
6314 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
6315 * fixed bug 20: DEFMETHOD can define methods using names that are
6316 not the proper names of classes to designate class specializers.
6317 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
6318 Unix file descriptors, instead of blowing up. (thanks to Antonio
6320 * Garbage collection refactoring: user-visible change is that a
6321 call to the GC function during WITHOUT-GCING will not do garbage
6322 collection until the end of the WITHOUT-GCING. If you were doing
6323 this you were probably losing anyway.
6324 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
6325 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
6326 TYPEP the latter but not the former.
6327 * The compiler issues a full WARNING for calls to undefined functions
6328 with names from the CL package.
6329 * MAP-INTO for a vector destination is open coded. (reported by
6330 Brian Downing on c.l.l)
6331 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
6332 documentation string.
6333 * fixed some bugs revealed by Paul Dietz' test suite:
6334 ** COPY-ALIST now signals an error if its argument is a dotted
6336 ** Condition slots are now accessed more correctly in the presence
6337 of multiple initargs for a given slot.
6338 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
6339 exclude restarts of the same name associated with a different
6341 ** DEFCLASS of forward-referenced classes with another
6342 forward-referenced class in the superclasses list no longer
6344 ** Condition slots are now initialized once each, not multiple
6345 times. (thanks to Gerd Moellmann)
6346 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
6348 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
6349 ** NSET-EXCLUSIVE-OR does not return extra elements when its
6350 arguments contain duplicated elements.
6351 ** RESTART-CASE understands local macros.
6352 ** RESTART-CASE associates exactly its own restarts with a condition.
6353 ** ENDP in safe mode checks its argument to be of type LIST.
6354 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
6355 in question is unbound.
6356 ** Optimized MAKE-INSTANCE functions no longer cause internal
6357 assertion failures in the presence of duplicate initargs.
6358 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
6359 ** Side-effectful :DEFAULT-INITARGS have their side-effects
6360 propagated even in the ctor optimized implementation of
6362 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
6364 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
6365 * a better implementation of SXHASH on (simple) bit vectors,
6366 measured both in execution speed and in distribution of results
6367 over the positive fixnums, has been installed. Likewise, a better
6368 implementation of EQUAL for simple bit vectors is now available.
6369 * fixed CEILING optimization for a divisor of form 2^k.
6370 * fixed bug 240 (emitting extra style warnings "using the lexical
6371 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
6372 by Antonio Martinez)
6373 * fixed SXHASH, giving different results for NIL depending on type
6374 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
6375 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
6376 variable. (found by Rolf Wester)
6377 * SBCL does not ignore type declarations for special
6378 variables. (reported by rif on c.l.l 2003-03-05)
6379 * some bug fixes in contrib/sb-aclrepl/
6380 * fixed some bugs revealed by Paul Dietz' test suite:
6381 ** a bug in the CONS type specifier, whereby the CAR and CDR
6382 types got intertwined, has been fixed;
6383 ** the type system is now able to reason about the interaction
6384 between INTEGER and RATIO types more completely;
6385 ** APPEND, [N]REVERSE and NRECONC check that those their
6386 arguments, which must be proper lists, are really so;
6387 ** An array specialized to be unable to hold elements has been
6388 implemented, as required -- yes, really -- by ANSI;
6389 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
6390 on malformed property lists;
6392 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
6393 * incompatible packaging change: in line with Unix convention,
6394 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
6395 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
6396 * REQUIRE and PROVIDE are now optionally capable of doing something
6397 useful. See the documentation string for REQUIRE.
6398 * infrastructure for a managed SBCL contrib system: contributed
6399 modules in this release include:
6400 ** the ASDF system definition facility;
6401 ** an interface to the BSD Sockets API;
6402 ** an ACL-like convenience interface to the repl;
6403 (thanks to Kevin Rosenberg)
6404 ** an implementation of ROTATE-BYTE, with efficient implementation
6406 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
6407 gives a closer approximation to the right answer than previously.
6408 (thanks to Raymond Toy)
6409 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
6410 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
6411 optional environment arguments, as required by ANSI.
6412 * fixed bugs in other functions taking environment objects, allowing
6413 calls with an explicit NIL environment argument to be compiled
6415 * fixed bug 228: primary return values from
6416 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
6417 COMPILE or FUNCTION.
6418 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
6419 :TYPE will no longer signal errors on innocuous objects.
6420 * fixed bug 231b: SETQ is better at respecting type declarations in
6421 the lexical environment.
6422 * fixed a bug in DEFCLASS: classes named by symbols with no or
6423 unprintable packages can now be defined.
6424 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
6425 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
6426 * fixed compiler failure related to checking types of functions.
6427 (reported by Robert E. Brown)
6428 * the compiler is now much more consistent in its error-checking
6429 treatment of bounding index arguments to sequence functions: in
6430 (SAFETY 3) code, errors will be signalled in almost all cases if
6431 invalid sequence bounding indices are passed to functions defined
6432 by ANSI to operate on sequences.
6433 * fixed a bug in the build procedure: documentation of SBCL-specific
6434 packages is now preserved and available in the final Lisp image.
6435 * lifted FDEFINITION lookup out of loops in the implementation of
6436 many list operations. (thanks to Robert E. Brown)
6437 * fixed a bug in the reader: the #n# reader macro now works for
6438 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
6439 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
6440 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
6441 E. Brown and Tony Martinez respectively)
6442 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
6443 SLOT-BOUNDP: in particular, it is now able to optimize them much
6444 better, and is now not vulnerable to having packages renamed.
6445 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
6446 always called when a slot is not present in an instance. (thanks
6448 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
6449 longer signal an error on unreading a character following EOF on
6450 the previous constituent stream. (thanks to Tony Martinez)
6451 * fixed some bugs revealed by Paul Dietz' test suite:
6452 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
6453 not just nonnegative fixnums;
6454 ** the logical bit-array operators such as BIT-AND now accept an
6455 explicit NIL for their "opt-arg" argument (to indicate a
6456 freshly-consed result bit-array);
6457 ** ELT now signals an error on an invalid sequence index in safe
6459 ** the type system is now cleverer about negations of numeric
6460 types, and consequently understands the BIGNUM and RATIO types
6462 ** the type system is now cleverer about the interaction between
6463 INTEGER and RATIO types: while bugs still remain, many more
6464 cases are accurately computed;
6465 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
6466 if it is in the last clause;
6467 ** CONSTANTLY now correctly returns a side-effect-free function in
6469 ** DECLARE is no longer treated as a special-operator; in
6470 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
6471 * incremented fasl file version number due to the change in the
6472 DEFSTRUCT-SLOT-DESCRIPTION structure.
6474 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
6475 * minor incompatible change: code processed by the "interpreter" or
6476 EVAL now has a compilation optimization policy of (DEBUG 2)
6477 (changed from (DEBUG 1)) to improve debuggability of interactive
6478 development, and to allow the use of the debug RETURN command in
6480 * an experimental implementation of the RETURN command for the
6481 debugger has been included. (thanks to Frederik Kuivinen)
6482 * fixed bug 62: constraints were not propagated into a loop.
6483 * fixed bug in embedded calls of SORT (reported and investigated by
6485 * fixed some bugs revealed by Paul Dietz' test suite:
6486 ** printing and reading of arrays with some dimensions having
6487 length 0 (thanks to Gerd Moellmann);
6488 ** BOA constructor with &AUX argument without a default value does
6489 not cause a type error;
6490 ** CONSTANTP now returns true for all self-evaluating objects.
6492 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6493 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6494 accessors that are related by inheritance, as specified in the
6495 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6496 Valtteri Vuorikoski)
6497 * The compiler is now able to inline functions that were defined in
6498 a complex lexical environment (e.g. inside a MACROLET).
6499 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6501 * Support for the upcoming FreeBSD-5.0 release has been included.
6502 (thanks to Dag-Erling Smorgrav)
6503 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6504 effect when it is not in a toplevel context.
6505 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6506 stand a better chance of being correct. (thanks to Gerd
6508 * fixed bug in COERCE, which now signals an error on coercing a
6509 rational to a bounded real type which excludes the expected
6511 * The compiler is now able to derive types more accurately from the
6512 COERCE and COMPILE functions.
6513 * fixed bug 223: functional binding is considered to be constant
6514 only for symbols in the CL package.
6515 * fixed bug 231: SETQ did not check the type of a variable being set
6516 (reported by Robert E. Brown)
6517 * A new optimization for MAKE-INSTANCE has been included, fixing
6518 various bugs (including relating to :ALLOCATION :CLASS slots and
6519 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6521 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6522 ** As required by ANSI, LOOP now disallows anonymous collection
6523 clauses such as COLLECT I in conjunction with aggregate boolean
6524 clauses such as THEREIS (= I 1);
6525 ** LOOP now signals an error when any variable is reused in the
6526 same loop (including the potentially useful construct analogous
6527 to WITH A = 1 WITH A = (1+ A);
6528 ** IT is only a special loop symbol within the first clause of a
6529 conditional loop clause;
6530 ** LOOP with a typed iteration variable over a hashtable now
6531 signals a type error iff it should.
6532 * fixed some other bugs revealed by Paul Dietz' test suite:
6533 ** FILE-STREAM now names the class previously known as FD-STREAM;
6534 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6535 argument) no longer signals an error;
6536 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6537 of the slot symbol, rather than using the current package
6538 ((:CONC-NAME "") continues to intern the slot's name in the
6540 * incremented fasl file version number, because of the incompatible
6541 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6542 of the new implementation of DEFINE-COMPILER-MACRO.
6544 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6545 * Support for building SBCL for MIPS platforms running in
6546 little-endian mode has now been checked in, and basic
6547 functionality on said platforms verified.
6548 * minor incompatible change: PCL now records the pathname of a file
6549 in which methods and the like are defined, rather than its
6551 * minor incompatible change: TRUENAME now considers the truename of
6552 a file naming a directory to be the pathname with :DIRECTORY
6553 component indicating that directory.
6554 * minor incompatible change: a NAMED clause in the extended form of
6555 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6556 reason for the previous behaviour is unclear.
6557 * more systematization and improvement of CLOS and MOP conformance
6558 in PCL (thanks to Gerd Moellman and Pierre Mai):
6559 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6561 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6562 primary methods with no specializers;
6563 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6565 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6566 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6567 FORWARD-REFERENCED-CLASSes; error reporting on
6568 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6570 ** SXHASH on CLOS instances now uses a slot internal to the
6571 instance to return different numbers on distinct instances,
6572 while preserving the same return value through invocations of
6574 ** DEFMETHOD signals errors when methods with longer incongruent
6575 lambda lists are added to generic functions;
6576 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6577 CLASS, as specified in AMOP;
6578 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6579 on the order returned by the primary method for classes of
6580 class STANDARD-CLASS;
6581 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6582 * fixed some bugs shown by Paul Dietz' test suite:
6583 ** DOLIST puts its body in TAGBODY;
6584 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6586 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6587 value producing form;
6588 ** if more variables are given to PROGV than values, extra
6589 variables are bound and made to have no value;
6590 ** NSUBSTITUTE on list arguments gets the right answer with
6592 ** ELT signals an error of type TYPE-ERROR when the index argument
6593 is not a valid sequence index;
6594 ** LOOP signals (at macroexpansion time) an error of type
6595 PROGRAM-ERROR when duplicate variable names are found;
6596 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6597 ** FUNCALL of special-operators now cause an error of type
6599 ** PSETQ now works as required in the presence of side-effecting
6600 symbol-macro places;
6601 ** NCONC accepts any object as its last argument;
6602 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6604 ** loop-for-as-package does not require a package to be explicitely
6606 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6608 * fixed bug 166: compiler preserves "there is a way to go"
6609 invariant when deleting code.
6610 * fixed bug 172: macro lambda lists with required arguments after
6611 &REST arguments now cause an error to be signalled. (thanks to
6613 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6614 bug. (thanks to Matthew Danish)
6615 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6617 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6618 arguments are lexically rebound. (thanks to Gerd Moellmann and
6620 * fixed bug 194: error messages are now more informative when there
6621 is no primary method applicable in a call to a generic
6622 function. (thanks to Gerd Moellmann)
6623 * fixed bug in command line argument checking (thanks to Julian
6625 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6626 (thanks to Matthew Danish)
6627 * incremented fasl file version number, because of the
6628 SXHASH-related changes in the layout of CLOS data structures
6630 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6631 * minor incompatible change: The runtime (the Unix executable named
6632 "sbcl") is now much pickier about the .core files it will load.
6633 Essentially it now requires .core files to descend from the same
6634 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6635 as the runtime does. (The intent is to prevent the crashes which
6636 can occur, and which can even be reported as mysterious failures,
6637 when people patch the sources or change the build parameters
6638 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6639 sbcl and .core files.)
6640 * fixed bug: VALUES-LIST is no longer optimized away.
6641 * fixed bug 142: The FFI conversion of C string values to Lisp
6642 string values no longer conses excessively. (thanks to Nathan
6643 Froyd porting Raymond Toy's fix to CMU CL)
6644 * began to systematize and improve MOP conformance in PCL (thanks to
6645 Nathan Froyd, Gerd Moellman and Pierre Mai):
6646 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6648 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6649 ** FINALIZE-INHERITANCE is now called on class finalization;
6650 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6651 argument precedence order.
6652 * fixed bug 202: The compiler no longer fails on functions whose
6653 derived types contradict their declared type.
6654 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6655 so it can be non-toplevel.
6656 * The fasl file version number has changed (because of the new
6657 implementation of DEFMACRO).
6658 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6659 safe code, that any length requirement by their type-specifier
6660 argument is valid. The exceptions to this are described in bug
6662 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6663 functions now check the types of their inputs as required by ANSI.
6664 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6665 introduced symbol is DECLAREd to be SPECIAL.
6666 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6667 * fixed bug: :COUNT argument to sequence functions may be negative
6668 * fixed bug: body of DO-SYMBOLS may contain declarations
6669 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6670 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6671 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6672 symbol macro only once
6673 * fixed printing of call frame when argument list is unavailable
6674 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6675 * compiler no longer signals WARNING on unknown keyword
6678 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6679 * A beta-quality port to the mips architecture running Linux,
6680 based on the old CMUCL backend, has been made. It has been tested
6681 on a big-endian kernel, and works sufficiently well to be able to
6682 rebuild itself; it has not been tested in little-endian mode.
6683 * fixed an inconsistency between gencgc.c and purify.c which made
6684 dumping/loading .core files unreliable
6685 * fixed bug 120a: The compiler now deals correctly with IFs where
6686 the consequent is the same as the alternative, instead of
6687 misderiving the return type. (thanks to Alexey Dejneka)
6688 * fixed bug 113: Logical pathnames are now dumpable (the logical
6689 host is resolved at load-time, throwing an error if it is not
6691 * fixed bug 174: FORMAT's error message is slightly clearer when a
6692 non-printing character is used in a format directive.
6693 * fixed several bugs in compiler checking of type declarations, i.e.
6694 violations of the Python "declarations are assertions" principle
6695 (thanks to Alexey Dejneka)
6696 * fixed several bugs in PCL's error checking (thanks to Gerd
6698 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6700 * fixed bug in compilation of functions as first class values
6701 (thanks to Antonio Martinez-Shotton)
6702 * The compiler's handling TYPE-ERRORs which it can prove will
6703 inevitably happen at runtime has been cleaned up and corrected
6704 in several ways. (thanks to Alexey Dejneka)
6705 * improved argument type checking for various basic arithmetic
6706 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6707 lavished on them in the past that they can be compiled in many
6708 ways in different special cases
6709 * fixed bug 181: compiler checks validity of user supplied type
6711 * cleaned up code flushing in optimization: Function calls which
6712 should signal errors for safety purposes (e.g. which ANSI says
6713 should signal errors when their arguments are of incorrect type)
6714 are no longer optimized away.
6715 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6716 * incremented fasl file version number, because changes in the
6717 implementation of sequence functions like COERCE caused
6718 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6719 in old inline expansions) to become undefined. (Actually these
6720 changes were later undone, so we might very well be binary
6721 compatible with 0.7.7 after all, but leaving the version number
6722 incremented seemed like the simplest and most conservative
6725 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6726 * An alpha-quality port to the parisc architecture running Linux,
6727 based on the old CMUCL backend, has been made. This, even more so
6728 than the other backends, should be considered still a work in
6729 progress; known problems include that the Linux kernel in 64-bit
6730 mode does not propagate the correct sigcontext structure to
6731 userspace, and consequently SBCL on a parisc64 kernel will not
6733 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6734 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6735 suppressed.) Also now that the compiler is looking at declarations
6736 in the environment, it checks optimization declarations as well,
6737 and suppresses inlining when (> DEBUG SPEED).
6738 * More fixes have been made to treatment of floating point exception
6739 treatment and other Unix signals. In particular, floating point
6740 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6741 * The detection and handling of control stack exhaustion (infinite
6742 or very deeply nested recursion) has changed. Stack exhaustion
6743 detection is now done by write-protecting pages at the OS level
6744 and applies at all optimization settings; when found, a
6745 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6746 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6747 be caught using IGNORE-ERRORS.
6748 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6749 correctly when transforming recursive LABELS functions to LETs.
6750 (thanks to Alexey Dejneka)
6751 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6752 that are names of constants or global variables.
6753 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6754 alien routines with docstrings.
6755 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6756 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6758 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6759 (thanks to Eric Marsden)
6760 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6761 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6762 * Bug fix: The SPARC backend can now compile functions involving
6763 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6764 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6765 to a functions expecting a PATHNAME-DESIGNATOR.
6766 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6767 lambda lists. (thanks to Alexey Dejneka)
6768 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6769 functions so that EXPORTing the name of the class doesn't cause
6770 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6771 to Antonio Martinez for reporting this)
6772 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6773 constant-folded without failing an assertion. (thanks to Einar
6774 Floystad Dorum for reporting this)
6775 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6776 types are now dealt with more correctly by the compiler.
6777 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6778 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6779 behaviour analogous to RENAME-FILE. This puts its behaviour more
6780 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6782 * The fasl file version number has changed again. (because of the
6783 bug fix involving the names of PCL MAKE-INSTANCE functions)
6785 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6786 * bug fix: Floating point exceptions are treated much more
6787 consistently on the x86/Linux and PPC/Linux platforms.
6788 * Array initialization with :INITIAL-ELEMENT is now much faster for
6789 cases when the compiler cannot open code the array creation, but
6790 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6791 array accesses have also seen a speed increase.
6792 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6793 specified. (This was at the root of some bad interactions between
6794 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6796 * bug fix: Internal error arguments for undefined functions are now
6797 computed correctly on the PPC/Linux platform.
6798 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6799 Raymond Toy's patch for CMU CL)
6800 * Support for the Solaris 9 operating environment has been included
6801 (thanks to Daniel Merritt)
6802 * A very ugly but hopefully complete draft of the missing FFI chapter
6803 of the manual has been created by reformatting the corresponding
6804 CMU CL manual chapter into (currently very ugly and incoherent)
6805 DocBook and bringing it up to date for SBCL behavior. Thus, the
6806 manual is now essentially complete, at least by my extreme
6807 once-and-only-once standards, whereby it's acceptable to refer to
6808 the doc strings of SB-EXT functions as the primary documentation.
6809 * The fasl file version number has changed again, due to cleanup of
6810 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6811 is no longer a static symbol.)
6813 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6814 * SBCL now builds with OpenMCL (version 0.12) as the
6815 cross-compilation host; also, more progress has been made toward
6816 bootstrapping under CLISP.
6817 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6819 * bug 158 fixed: The compiler can now deal with integer loop
6820 increments different from 1; fixing this turned out also to fix
6822 * bug 169 fixed: no more bogus warnings about using lexical bindings
6823 despite the presence of perfectly good SPECIAL declarations (thanks
6824 to David Lichteblau)
6825 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6826 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6827 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6829 * bug 180 fixed: Method combination specifications no longer ignore
6830 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6831 * bug fix: Structure type predicate functions now check their argument
6832 count as they should.
6833 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6834 correctly. (thanks to Pierre Mai)
6835 * minor incompatible change: The --noprogrammer option is deprecated
6836 in favor of the new --disable-debugger option, which is very similar.
6837 (The major difference is that it takes effect at a slightly different
6838 time at startup, causing handling of errors in --sysinit and
6839 --userinit files will be affected differently.) The
6840 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6841 been added to allow this functionality to be controlled from ordinary
6842 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6843 maintainers, who might want to run non-interactive scripts to
6844 build SBCL cores which will later be used interactively.)
6845 * minor incompatible change: The LOAD function no longer, when given
6846 a wild pathname to load, loads all files matching that pathname.
6847 Instead, an error of type FILE-ERROR is signalled.
6849 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6850 * bug 147 fixed: The compiler preserves its block link/count
6851 invariants more correctly now so that it doesn't crash. (thanks
6853 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6855 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6856 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6857 no-value-for-this-character as NIL (as specified by ANSI).
6858 * HOST-NAMESTRING on physical pathnames now returns a string that is
6859 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6860 (thanks to Christophe Rhodes)
6861 * The Alpha port handles icache flushing more correctly. (thanks to
6863 * More progress has been made toward bootstrapping under CLISP. (thanks
6864 to Christophe Rhodes)
6865 * The fasl file format has changed again, because dynamic loading
6866 on OpenBSD (which has non-ELF object files) motivated some cleanups
6867 in the way that foreign symbols are transformed and passed around.
6868 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6869 is no longer treated as whitespace by the reader, but instead as
6870 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6871 |A
\x7fB|, instead of A as it used to.
6873 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6874 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6875 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6876 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6877 this as of 0.7.1.45, but was left out of the previous news section
6878 (thanks to Dan Barlow)
6879 * SBCL now runs on the Solaris operating system on SPARC architectures
6880 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6881 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6882 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6883 * SPARC backend cleanups, allowing builds of cores optimized for V8
6884 and V9 SPARCS, and also emission of code targeted to a particular
6885 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6887 * SBCL is closer to bootstrapping under CLISP, thanks to various
6888 fixes by Christophe Rhodes.
6889 * The fasl file format has changed again, to allow the compiler's
6890 INFO database to support symbol macros.
6891 * The user manual (in doc/) is formatted into HTML more nicely.
6892 (thanks to coreythomas)
6893 * The system is smarter about SUBTYPEP relationships, especially
6894 those involving NOT types (including types such as ATOM which are
6895 represented internally using NOT types). Thus SUBTYPEP is less
6896 likely to return (VALUES NIL NIL) in general, and in particular
6897 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6899 * The fasl file format has changed again, because the internal
6900 representation of types now includes a new slot to support the new
6901 SUBTYPEP-of-NOT-types logic.
6902 * (not a change in the main branch of SBCL, but a related prototype
6903 which can hopefully be merged into the main branch of SBCL in the
6904 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6905 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6906 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6907 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6908 dispatch macro character combinations. (thanks to Alexey Dejneka)
6909 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6910 that superficially look like logical namestrings correctly.
6911 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6913 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6914 default supplied-p) for &optional and &key arguments. (thanks to
6917 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6918 * incompatible change: The compiler is now less aggressive about
6919 tail call optimization, doing it only when (> SPACE DEBUG) or
6920 (> SPEED DEBUG). (This is an incompatible change because there are
6921 programs which relied on the old CMU-CL-style behavior to optimize
6922 away their unbounded recursion which will now die of stack overflow.)
6923 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6924 for non-GENCGC systems has been increased to 20M (since that
6925 seems much closer to the likely performance optimum for modern
6926 systems than the old 4M value was)
6927 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6928 and *DEBUG-PRINT-LEVEL*
6929 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6930 of CMU CL's support for SPARC, and various endianness and other
6931 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6932 * new syntactic sugar for the Unix command line: --load foo.bar is now
6933 an alternate notation for --eval '(load "foo.bar")'.
6935 ** The system now detects stack overflow and handles it gracefully,
6936 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6937 optimization settings. (This is a good thing in general, and
6938 its introduction in this version should be particularly timely
6939 for anyone whose code fails because of suppression of tail
6941 ** The system now hunts for the C variable "environ" in a more
6942 devious way, to avoid segfaults when the C library version differs
6943 between compile time and run time. (thanks to Christophe Rhodes)
6944 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6945 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6946 ** The compiler no longer issues bogus style warnings for undefined
6947 classes in the same source file as the DEFCLASSes which defined
6948 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6950 ** fixes in CONDITION class precedence list for undefined function
6951 errors (thanks to Alexei Dejneka)
6952 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6953 correctly. (thanks to Dan Barlow)
6954 ** portability fixes aiming at bootstrapping under CLISP (thanks
6955 to Dave McDonald and Christophe Rhodes)
6956 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6957 ** fixes in type translation and and type inference (thanks to
6959 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6960 ** various fixes in the new ports (thanks to Dan Barlow)
6961 * several changes related to debugging:
6962 ** suppression of tail recursion, as noted above
6963 ** stack overflow detection, as noted above
6964 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6965 is now the default. (For some time encapsulation has been more
6966 reliable than the breakpoint-based :ENCAPSULATE NIL
6967 implementation, at least on X86 systems; and I just noticed that
6968 encapsulation also seems closer to the spirit of the ANSI
6971 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6973 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6974 up properly again. (There was a packaging bug in 0.7.0 which
6975 left their definitions in SB-SYS::LOAD-FOREIGN and
6976 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6977 vital for most things which interface to C-level interfaces,
6978 like extensions working with sockets or databases or
6979 Perl-compatible regexes or whatever, and the need to fix
6980 this bug is the main reason that 0.7.1 was released so
6982 ** DEFGENERIC is now choosier about the methods it redefines, so that
6983 reLOADing a previously-LOADed file containing DEFGENERICs does
6984 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6985 cycle now works as it should. (thanks to Alexey Dejneka)
6986 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6987 fixed by Christophe Rhodes. (He actually submitted this patch
6988 months ago, and I delayed until after 0.7.0.)
6989 ** Bug 111 (internal compiler confusion about runtime checks on
6990 FUNCTION types) was fixed by Alexey Dejneka.
6991 * Some internal cleanups (getting rid of variables which aren't
6992 needed now that the byte interpreter is gone) caused the fasl
6993 file format number to change again.
6995 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6996 * major incompatible change: The default fasl file extension, i.e. the
6997 default extension for files produced by COMPILE-FILE, has changed
6998 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
7000 ** There are many changes in the implementation of the compiler.
7001 SBCL is now essentially a compiler-only implementation of ANSI
7002 Common Lisp. EVAL still "interprets" a few special cases, but
7003 almost all the interesting cases are handled by creating
7004 a LAMBDA expression, calling COMPILE on it, then calling
7005 FUNCALL on the result.
7006 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
7007 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
7008 Since the code is newer, there might still be some new bugs
7009 (though not as many as before Martin Atzmueller's fixes:-). But
7010 the new code is substantially simpler and clearer, and hopefully
7011 any remaining bugs will be simpler, less fundamental, and more
7012 fixable then the bugs in the old code.
7013 ** The revised compiler is still a little unsteady on its feet.
7015 *** The debugging information it produces (particularly the names
7016 of FUNCTION objects) is sometimes much less useful than what
7017 the old compiler produced.
7018 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
7019 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
7020 within a MACROLET) has been temporarily weakened.
7021 ** There are new compiler optimizations for various functions:
7022 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
7023 FIND-IF-NOT, POSITION-IF-NOT, and FILL
7024 *** the math functions TRUNCATE, FLOOR, and CEILING
7025 *** the function-of-all-trades COERCE
7026 Mostly these should be transparent, but there's one
7027 potentially-annoying problem (bug 117): when the compiler
7028 inline-expands a function and does type analysis on the result,
7029 it can create control paths which have type mismatches, and
7030 when it can't prove that those control paths aren't taken,
7031 it will issue WARNINGs about the type mismatches. This is
7032 a particular problem in practice for the new sequence functions.
7033 It's not clear how this should be fixed, and for now, a
7034 workaround is given in the entry for 117 in the BUGS file.
7035 ** (Because of the interaction between the two previous items --
7036 occasional inlining problems and new inline expansions -- some
7037 of the new sequence function optimizations won't really kick in
7038 completely until debugging information, and then inlining, are
7039 straightened out in some future version.)
7040 * minor incompatible changes:
7041 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
7042 DIRECTORY no longer implicitly promotes NIL slots of its
7043 pathname argument to :WILD. In particular, when you ask for the
7044 contents of a directory (which you used to be able to do without
7045 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
7046 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
7047 ** changes in behavior that ANSI explicitly defines to be
7048 implementation dependent:
7049 *** The new compiler-only implementation still conforms with ANSI,
7050 but acts a little different than before. Besides the obvious
7051 changes in performance tradeoffs (that the cost per form passed
7052 to EVAL has gone up, and the cost per form executed by EVAL
7053 has gone down), the behavior of the system changes a little
7054 because there are no longer any interpreted function objects.
7055 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
7056 e.g. doing COMPILE on the output of interactive DEFUN is
7058 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
7060 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
7061 has changed from (:CL) to NIL.
7062 *** The CHAR-NAME of unprintable ASCII characters which, unlike
7063 e.g. #\Newline and #\Tab, don't have names specified in the
7064 ANSI Common Lisp standard, is now based on their ASCII symbolic
7065 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
7066 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
7067 are no longer used for output.
7068 ** changes in internal implementation constants:
7069 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
7070 4 million. (If your application spends a lot of time GCing and
7071 you have a lot of RAM, you might want to experiment with
7072 increasing it even more.)
7073 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
7074 However, almost all old code should still continue to work without
7075 immediate update, as SB-C-CALL is now a (deprecated) nickname
7077 ** Old operator names in the style DEF-FOO are now deprecated in
7078 favor of new corresponding names DEFINE-FOO, for consistency with
7079 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
7080 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
7081 internal symbols, but a few supported extensions like
7082 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
7083 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
7084 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
7085 etc. as you get deeper into recursive calls to the debugger
7086 command loop, instead of the old "5]", "5]]", "5]]]"
7087 sequence. (I was motivated to do this when squabbles between
7088 ILISP and SBCL left me very deeply nested in the debugger. In the
7089 short term, this change will probably provoke more ILISP/SBCL
7090 squabbles, but hopefully it will be an improvement in the long run.)
7091 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
7092 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
7093 function, since declaiming return types involving aliens is
7094 (1) annoyingly messy to do by hand and (2) vital to efficient
7095 compilation of code which calls such functions.
7096 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
7097 longer reexported by the SB-EXT package. They're solely useful
7098 for alien code, so it seems more logical that you should get
7099 them from the SB-ALIEN package, not in SB-EXT.
7100 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
7101 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
7102 features. Instead, the code that they used to control is always
7103 built into the system.
7104 * many other bug fixes
7105 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
7106 advantage of the new EVAL-WHEN stuff and to clean them up in
7107 general, and they are now more ANSI-compliant in a number of
7108 ways. Martin Atzmueller is responsible for a lot of this.
7109 ** Besides the cleanups discussed above, Martin Atzmueller fixed
7111 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
7112 *** correct ERROR type for various file operations
7113 *** some fixes for Lisp streams
7114 *** DEFMETHOD syntax checking
7115 *** changing old weird representation of debug information as
7116 strings (which, among their other deficiencies, don't transform
7117 correctly when you rename packages, and don't change their
7118 print representation when you change things like *PACKAGE*
7119 and *PRINT-LENGTH*) to symbols and lists of symbols
7120 He also made several improvements and fixed several bugs in DESCRIBE.
7121 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
7123 *** misbehavior of WRITE-STRING/WRITE-LINE
7124 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
7125 and several other LOOP problems as well
7126 *** DIRECTORY when similar filenames are present
7127 *** DEFGENERIC with :METHOD options
7128 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
7129 *** bug in the optimization of ARRAY-ELEMENT-TYPE
7130 *** argument ordering in FIND with :TEST option
7131 *** mishandled package designator argument in APROPOS-LIST
7132 *** various problems in the backquote readmacro
7133 *** a bug in APROPOS
7134 *** probably some others that I'm not describing very well here,
7135 since the CVS log documents them by reference to sbcl-devel
7136 messages, and the SourceForge archives aren't working well.:-(
7137 ** Dan Barlow improved the Alpha port (and is making progress on the
7138 PPC port, for those of you who think different).
7139 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
7140 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
7141 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
7142 continues to work on the SPARC port (for those of you in a position
7143 to look down upon our little PC-compatible boxes from a great height).
7144 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
7145 and uses that copy, rather than the current dynamic value, when
7146 it's trying to decide whether to truncate output. Thus e.g.
7147 (let ((*print-lines* 50))
7148 (pprint-logical-block (stream nil)
7150 (let ((*print-lines* 8))
7151 (print (aref possiblybigthings i) stream)))))
7152 should now truncate the logical block only at 50 lines, instead of
7153 often truncating it at 8 lines, as it did before.
7154 * The doc/cmucl/ directory, containing old CMU CL documentation
7155 from the time of the fork, is no longer part of the base system.
7156 SourceForge has shut down its anonymous FTP service, and with it
7157 my original plan for distributing the old CMU CL documentation
7158 there. For now, if you need these files you can download an old
7159 SBCL source release and extract them from it.
7160 * The fasl file version number changed again, for dozens of reasons,
7161 some of which are apparent above.
7163 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
7164 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
7165 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
7166 patch, so that DISASSEMBLE output is much nicer.
7167 * The code in the SB-PROFILE package now seems reasonably stable.
7168 I still haven't decided what the final interface should look like
7169 (I'd like PROFILE to interact cleanly with TRACE, since both
7170 facilities use function encapsulation) but if you have a need
7171 for profiling now, you can probably use it successfully with
7172 the current CMU-CL-style interface.
7173 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
7174 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
7175 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
7176 link now returns the dangling link itself, and for similar
7177 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
7178 link itself. (In these cases the old code signalled an error and
7179 looped endlessly, respectively.) Thus, DIRECTORY now works even
7180 in the presence of dangling and cyclic symbolic links.
7181 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
7182 is now a supported extension again, since the consensus on
7183 sbcl-devel was that it can be useful for ordinary development
7184 work, not just for debugging SBCL itself.
7185 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
7186 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
7187 that currently-defined functions might be redefined later with
7188 different return types.
7189 * Hash tables can be printed readably, as inspired by CMU CL code
7190 of Eric Marsden and SBCL code of Martin Atzmueller.
7191 * better error handling in CLOS method combination, thanks to
7192 Martin Atzmueller porting Pierre Mai's CMU CL patches
7193 * more overflow fixes for >16Mbyte I/O buffers
7194 * A bug in READ has been fixed, so that now a single Ctrl-D
7195 character suffices to cause end-of-file on character streams.
7196 In particular, now you only need one Ctrl-D at the command
7197 line (not two) to exit SBCL.
7198 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
7200 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
7201 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
7202 does the right thing.
7203 * The implementation of some type tests, especially for CONDITION
7204 types, is now tidier and maybe faster, due to CMU CL code
7205 originally by Douglas Crosher, ported by Martin Atzmueller.
7206 * Some math functions have been fixed, and there are new
7207 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
7208 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
7209 * (There are also some new optimizers in contrib/*-extras.lisp. Those
7210 aren't built into sbcl-0.6.13, but are a sneak preview of what's
7211 likely to be built into sbcl-0.7.0.)
7212 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
7213 CL, ported to SBCL by Martin Atzmueller)
7214 * DESCRIBE now gives more information in some cases. (Pierre Mai's
7215 patch to CMU CL, ported to SBCL by Martin Atzmueller)
7216 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
7217 * There's a new slam.sh hack to shorten the edit/compile/debug
7218 cycle for low-level changes to SBCL itself, and a new
7219 :SB-AFTER-XC-CORE target feature to control the generation of
7220 the after-xc.core file needed by slam.sh.
7221 * minor incompatible change: The ENTRY-POINTS &KEY argument to
7222 COMPILE-FILE is no longer supported, so that now every function
7223 gets an entry point, so that block compilation looks a little
7224 more like the plain vanilla ANSI section 3.2.2.3 scheme.
7225 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
7226 returns the number of bytes consed since the system started,
7227 rather than the number consed since the first time the function
7228 was called. (The new definition parallels ANSI functions like
7229 CL:GET-INTERNAL-RUN-TIME.)
7230 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
7231 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
7232 supported. Now DIRECTORY always does the abstract Common-Lisp-y
7233 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
7234 * Fasl file version numbers are now independent of the target CPU,
7235 since historically most system changes which required version
7236 number changes have affected all CPUs equally. Similarly,
7237 the byte fasl file version is now equal to the ordinary
7240 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
7241 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
7242 is no longer recognized. I apologize for this, because it was
7243 listed in SB-EXT as a supported extension, but I found that
7244 its existing behavior was poorly specified, as well as incorrectly
7245 specified, and it looked like too much of a mess to straighten it
7246 out. I have enough on my hands trying to get ANSI stuff to work..
7247 * many patches ported from CMU CL by Martin Atzmueller, with
7248 half a dozen bug fixes in pretty-printing and the debugger, and
7249 half a dozen others elsewhere
7250 * fixed bug 13: Floating point infinities are now supported again.
7251 They might still be a little bit flaky, but thanks to bug reports
7252 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
7253 as flaky as they were.
7254 * The --noprogrammer command line option is now supported. (Its
7255 behavior is slightly different in detail from what the old man
7256 page claimed it would do, but it's still appropriate under the
7257 same circumstances that the man page talks about.)
7258 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
7259 are now supported, and enabled by default. Thus, the compiler can
7260 handle many floating point and complex operations much less
7261 inefficiently. (Thus e.g. you can implement a complex FFT
7263 * The compiler now detects type mismatches between DECLAIM FTYPE
7264 and DEFUN better, and implements CHECK-TYPE more correctly, and
7265 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
7266 thanks to patches from Martin Atzmueller.
7267 * various fixes to make the cross-compiler more portable to
7268 ANSI-conforming-but-different cross-compilation hosts (notably
7269 Lispworks for Windows, following bug reports from Arthur Lemmens)
7270 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
7271 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
7272 fixed thanks to Pierre Mai's CMU CL patches.
7273 * fixes to keep the system from overflowing internal counters when
7274 it tries to use i/o buffers larger than 16M bytes
7275 * fixed bug 45a: Various internal functions required to support
7276 complex special functions have been merged from CMU CL sources.
7277 (When I was first setting up SBCL, I misunderstood a compile-time
7278 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
7279 * improved support for type intersection and union, fixing bug 12
7280 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
7281 more obscure bugs as well
7282 * some steps toward byte-compiling non-performance-critical
7283 parts of the system, courtesy of patches from Martin Atzmueller
7284 * Christophe Rhodes has made some debian packages of sbcl at
7285 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
7286 From his sbcl-devel e-mail of 2001-04-08 they're not completely
7287 stable, but are nonetheless usable. When he's ready, I'd be happy
7288 to add them to the SourceForge "File Releases" section. (And if
7289 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
7290 * new fasl file format version number (because of changes in
7291 internal representation of (OR ..) types to accommodate the new
7292 support for (AND ..) types, among other things)
7294 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
7295 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
7297 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
7299 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
7300 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
7301 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
7302 * DESCRIBE now works on structure objects again.
7303 * Most function call argument type mismatches are now handled as
7304 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
7305 know whether the function will be redefined before the call is
7306 executed. (The compiler could flag local calls with full WARNINGs,
7307 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
7308 it doesn't keep track of enough information to know whether calls
7309 are local in this sense.)
7310 * Compiler output is now more verbose, with messages truncated
7311 later than before. (There should be some supported way for users
7312 to override the default verbosity, but I haven't decided how to
7313 provide it yet, so this behavior is still controlled by the internal
7314 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
7315 src/compiler/ir1util.lisp.)
7316 * Fasl file format version numbers have increased again, because
7317 support for the Gray streams extension changes the layout of the
7318 system's STREAM objects.
7319 * The Gray subclassable streams extension now works, thanks to a
7320 patch from Martin Atzmueller.
7321 * The full LOAD-FOREIGN extension (not just the primitive
7322 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
7323 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
7324 but like most other programs, it defaults to copying the Unix
7325 environment from the original process instead of starting the
7326 new process in an empty environment.
7327 * Extensions which manipulate the Unix environment now support
7328 an :ENVIRONMENT keyword option which doesn't smash case or
7329 do other bad things. The CMU-CL-style :ENV option is retained
7330 for porting convenience.
7331 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
7332 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
7334 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
7336 * A patch from Martin Atzmueller seems to have solved the SIGINT
7337 problem, and as far as we know, signal-handling now works cleanly.
7338 (If you find any new bugs, please report them!)
7339 * The system no longer defaults Lisp source file names to types
7340 ".l", ".cl", or ".lsp", but only to ".lisp".
7341 * The compiler no longer uses special default file extensions for
7342 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
7343 seems to expect a single default extension for all compiled code,
7344 and there's no compelling reason to try to stretch the standard
7345 to allow two different extensions.) Instead, byte-compiled files
7346 default to the same extension as native-compiled files.
7347 * Fasl file format version numbers have increased again, because
7348 a rearrangement of internal implementation packages made some
7349 dumped symbols in old fasl files unreadable in new cores.
7350 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
7351 many fewer weird special cases.
7352 * Bug #17 (differing COMPILE-FILE behavior between logical and
7353 physical pathnames) has been fixed, and some related misbehavior too,
7354 thanks to a patch from Martin Atzmueller.
7355 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
7356 by Tim Moore, ported to SBCL by Martin Atzmueller.
7357 * Martin Atzmueller fixed several filesystem-related problems,
7358 including bug #36, in part by porting CMU CL patches, which were
7359 written in part by Paul Werkowski.
7360 * More compiler warnings in src/runtime/ are gone, thanks to
7361 more patches from Martin Atzmueller.
7362 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
7365 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
7367 * DESCRIBE now works on CONDITION objects.
7368 * The debugger now handles errors which arise when trying to print
7369 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
7371 * The build system now uses an additional file, customize-target-features.lisp,
7372 to allow local modifications to the target *FEATURES* list. (The point of
7373 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
7374 debugging features enabled, without having to worry about propagating it
7375 into everyone's system when I do a "cvs update".) When no
7376 customize-target-features.lisp file exists, the target *FEATURES* list
7377 should be constructed the same way as before.
7378 * fixed bugs in DEFCONSTANT ANSI-compatibility:
7379 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
7380 warn about behavior which is undefined under the ANSI spec. Note: This
7381 is specified by ANSI, but it's not very popular with programmers.
7382 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
7383 macro in the SBCL sources for an example of a workaround which you
7384 might use to make portable ANSI-standard code which does what you want.
7385 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
7386 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
7387 when it's used as a non-toplevel form. (This is required in order
7388 to implement the DEFCONSTANT-EQX macro.)
7389 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
7390 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
7391 funny things, due to bugs in the implementation of EVAL-WHEN
7392 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
7393 non-toplevel DEFCONSTANTs are uncommon.)
7394 * The core file version number and fasl file version number have been
7395 incremented, because the old noncompliant DEFCONSTANT behavior involved
7396 calling functions which no longer exist, and because I also took the
7397 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
7398 * fixed bug 1 (error handling before read-eval-print loop starts), and
7399 redid debugger restarts and related debugger commands somewhat while
7401 ** The QUIT debugger command is gone, since it did something
7402 rather different than the SB-EXT:QUIT command, and since it never
7403 worked properly outside the main toplevel read/eval/print loop.
7404 Invoking the new TOPLEVEL restart provides the same functionality.
7405 ** The GO debugger command is also gone, since you can just invoke
7406 the CONTINUE restart directly instead.
7407 ** The TOP debugger command is also gone, since it's redundant with the
7408 FRAME 0 command, and since it interfered with abbreviations for the
7410 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
7412 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
7413 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
7414 some porting work by Martin Atzmueller)
7415 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
7416 with a boatload of patches which he ported to SBCL. Now that those
7418 ** The system tries to make sure that its low-priority messages
7419 are prefixed by semicolons, to help people who like to use
7420 syntax highlighting in their ILISP buffer. (This patch
7421 was originally due to Raymond Toy.)
7422 ** The system now optimizes INTEGER-LENGTH better, thanks to more
7423 patches originally written by Raymond Toy.
7424 ** The compiler understands coercion between single-value and
7425 multiple-VALUES type expressions better, getting rid of some very
7426 weird behavior, thanks to patches originally by Robert MacLachlan
7427 and Douglas Crosher.
7428 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
7429 lambda lists, thanks to a patch originally by Pierre Mai.
7430 ** The system no longer bogusly warns about "abbreviated type
7432 ** The compiler gets less confused by inlining and RETURN-FROM,
7433 thanks to some patches originally by Tim Moore.
7434 ** The system no longer hangs when dumping circular lists to fasl
7435 files, thanks to a patch originally from Douglas Crosher.
7436 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
7437 undefined function error.
7438 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
7439 in structure slot initforms) for now, documented workaround instead:-|
7440 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
7441 * fixed bug 5: added stubs for various Gray stream functions called
7442 in the not-a-CL:STREAM case, so that even when Gray streams aren't
7443 installed, at least appropriate type errors are generated
7444 * fixed bug 8: better reporting of various PROGRAM-ERRORs
7445 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
7446 consistently in DEFMETHOD forms.
7447 * removed bug 21 from BUGS, since Martin Atzmueller points out that
7448 it doesn't seem to affect SBCL after all
7449 * The C runtime system now builds with better optimization and many
7450 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
7452 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
7454 * The system is now under CVS at SourceForge (instead of the
7455 CVS repository on my home machine).
7456 * The new signal handling code has been tweaked to treat register
7457 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
7458 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
7459 downstream, e.g. in debug-int.lisp, has implicit dependencies
7460 on the unsignedness of integer representation of machine words,
7461 and that caused the system to bomb out with infinite regress
7462 when trying to recover from type errors involving signed values,
7463 e.g. (BUTLAST '(1 2 3) -1).)
7464 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
7465 (This was one of the bugs Peter Van Eynde reported back in July.)
7466 * The system now uses code inspired by Colin Walters' O(N)
7467 implementation of MAP (from the cmucl-imp@cons.org mailing
7468 list, 2 September 2000) when it can't use a DEFTRANSFORM to
7469 inline the MAP operation, and there is more than one
7470 sequence argument to the MAP call (so that it can't just
7471 do ETYPECASE once and for all based on the type of the
7472 single sequence argument). (The old non-inline implementation
7473 of the general M-argument sequence-of-length-N case required
7474 O(M*N*N) time when any of the sequence arguments were LISTs.)
7475 * The QUIT :UNIX-CODE keyword argument has been renamed to
7476 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
7477 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
7479 * Raymond Wiker's patches to port dynamic loading from Linux to
7480 FreeBSD have been added.
7481 * The BUGS file is now more nearly up to date, thanks in large part
7482 to Martin Atzmueller's review of it.
7483 * The debugger now flushes standard output streams before it begins
7484 its output ("debugger invoked" and so forth).
7485 * The core version number and fasl file version number have both
7486 been incremented, because of incompatible changes in the layout
7488 * FINISH-OUTPUT is now called more consistently on QUIT. (It
7489 used to not be called for a saved Lisp image.)
7490 * Martin Atzmueller's version of a patch to fix a compiler crash,
7491 as posted on sbcl-devel 13 September 2000, has been installed.
7492 * Instead of installing Martin Atzmueller's patch for the
7493 compiler transform for SUBSEQ, I deleted the compiler transform,
7494 and transforms for some similar consing operations.
7495 * A bug in signal handling which kept TRACE from working on OpenBSD
7497 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7498 away by constant folding
7499 * The system now defines its address space constants in one place
7500 (in the Lisp sources), and propagates them automatically elsewhere
7501 (through GENESIS and the sbcl.h file). Therefore, patching the
7502 address map is less unnecessarily tedious and error-prone. The
7503 Lisp names of address space constants have also been systematized.
7504 * CVS tags like dollar-Header-dollar have been removed from
7505 the sources, because they have never saved me trouble and
7506 they've been source of trouble working with patches and other
7507 diff-related operations.
7508 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7509 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7511 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7513 * The system has been ported to OpenBSD.
7514 * The system now compiles with a simple "sh make.sh" on the systems
7515 that it's supported on. I.e., now you no longer need to tweak
7516 text in the target-features.lisp-expr and symlinks in src/runtime/
7517 by hand, the make.sh takes care of it for you.
7518 * The system is no longer so grossly inefficient when compiling code
7519 involving vectors implemented as general (not simple) vectors (VECTOR T),
7520 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7521 which dares to use the various sequence functions on non-simple
7522 vectors, takes less of a performance hit.
7523 * There is now a primitive type predicate VECTOR-T-P
7524 to test for the (VECTOR T) type, so that e.g.
7525 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7526 can now be compiled with some semblance of efficiency. (The old code
7527 turned the type declaration into a full call to %TYPEP at runtime!)
7528 * AREF on (VECTOR T) is still not fast, since it's still compiled
7529 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7530 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7531 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7532 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7533 without making full calls to SUBTYPEP at runtime.
7534 (Some analogous efficiency issues for non-simple vectors specialized to
7535 element types other than T, or for non-simple multidimensional arrays,
7536 have not been addressed. They could almost certainly be handled the
7537 same way if anyone is motivated to do so.)
7538 * The changes in array handling break binary compatibility, so
7539 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7540 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7541 instead of (VALUES T T).
7542 * By following the instructions that Dan Barlow posted to sbcl-devel
7543 on 2 July 2000, I was able to enable primitive dynamic object
7544 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7545 functionality is not implemented (since it calls ld to resolve
7546 library references automatically, requiring RUN-PROGRAM for its
7547 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7548 try to resolve library references) is now supported.
7549 * The system now flushes the standard output streams when it terminates,
7550 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7551 them at several other probably-convenient times, e.g. in each pass of
7552 the toplevel read-eval-print loop, and after evaluating a form given
7553 as an "--eval" command-line option. (These changes were motivated by a
7554 discussion of stream flushing issues on cmucl-imp in August 2000.)
7555 * The source transform for TYPEP of array types no longer assumes
7556 that an array whose element type is a not-yet-defined type
7557 is implemented as an array of T, but instead punts, so that the
7558 type will be interpreted at runtime.
7559 * There is now some support for cross-compiling in make.sh: each of
7560 the phases of make.sh has its own script. (This should be transparent
7561 to people doing ordinary, non-cross-compile builds.)
7562 * Since my laptop doesn't have hundreds of megabytes of memory like
7563 my desktop machine, I became more motivated to do some items on
7564 my to-do list in order to reduce the size of the system a little:
7565 ** Arrange for various needed-only-at-cold-init things to be
7566 uninterned after cold init. To support this, those things have
7567 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7568 symbols with such names are now uninterned after cold init).
7569 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7570 fasl files for cold load.
7571 ** Remove the old compiler structure pooling code (which used to
7572 be conditional on the target feature :SB-ALLOC) completely.
7573 ** Redo the representation of some data in cold init to be more compact.
7574 (I also looked into supporting byte compiled code at bootstrap time,
7575 which would probably reduce the size of the system a lot, but that
7576 looked too complicated, so I punted for now.)
7577 * The maximum signal nesting depth in the src/runtime/ support code has
7578 been reduced from 4096 to 256. (I don't know any reason for the very
7579 large old value. If the new smaller value turns out to break something,
7580 I'll probably just bump it back up.)
7581 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7583 * Many, many bugs reported by Peter Van Eynde have been added to
7584 the BUGS list; some have even been fixed.
7585 * While enabling dynamic object file loading, I tried to make the
7586 code easier to understand, renaming various functions and variables
7587 with less ambiguous names, and changing some function calling
7588 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7589 * While trying to figure out how to do the OpenBSD port, I tried to
7590 clean up some of the code in src/runtime/. In particular, I dropped
7591 support for non-POSIX signal handling, added various comments,
7592 tweaked the code to reduce the number of compilation warnings, and
7593 renamed some files to increase consistency.
7594 * To support the new automatic configuration functionality in make.sh,
7595 the source file target-features.lisp-expr has been replaced with the
7596 source file base-target-features.lisp-expr and the machine-generated
7597 file local-target-features.lisp-expr.
7598 * fixed a stupid quoting error in make.sh so that using CMU CL
7599 "lisp -batch" as cross-compilation host works again
7601 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7603 * DESCRIBE no longer tries to call itself recursively to describe
7604 bound/fbound values, so that it no longer fails on symbols which are
7605 bound to themselves (like keywords, T, and NIL).
7606 * DESCRIBE now works on generic functions.
7607 * The printer now prints less-screwed-up representations of closures
7608 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7609 * A private symbol is used instead of the :EMPTY keyword previously
7610 used to mark empty slots in hash tables. Thus
7611 (DEFVAR *HT* (MAKE-HASH-TABLE))
7612 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7613 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7614 now does what ANSI says that it should. (You can still get
7615 similar noncompliant behavior if bang on the hash table
7616 implementation with all the symbols you get back from
7617 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7618 This breaks binary compatibility, since tests for equality to
7619 :EMPTY are wired into things like the macroexpansion of
7620 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7622 * There's now a minimal placeholder implementation for CL:STEP,
7623 as required by ANSI.
7624 * An obscure bug in the interaction of the normal compiler, the byte
7625 compiler, inlining, and structure predicates has been patched
7626 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7627 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7629 * Missing ordinary arguments in a macro call are now detected even
7630 when the macro lambda list contains &KEY or &REST.
7631 * The debugger no longer complains about encountering the top of the
7632 stack when you type "FRAME 0" to explicitly instruct it to go to
7633 the top of the stack. And it now prints the frame you request even
7634 if it's the current frame (instead of saying "You are here.").
7635 * As specified by ANSI, the system now always prints keywords
7636 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7638 * The default initial SIZE of HASH-TABLEs is now smaller.
7639 * Type information from CLOS class dispatch is now propagated
7640 into DEFMETHOD bodies, so that e.g.
7641 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7643 is now basically equivalent to
7644 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7645 (DECLARE (TYPE SINGLE-FLOAT X))
7647 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7648 operation, without having to do run-time type dispatch.
7649 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7650 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7651 * Since I don't seem to be making big file reorganizations very often
7652 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7653 is overflowing my ability to conveniently back them up), I've finally
7654 checked the system into CVS. (The CVS repository is on my home system,
7655 not at SourceForge -- putting it on SourceForge might come later.)
7656 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7657 high-level GC-NOTIFY-FOO functions send their output. (There's
7658 still very little control of where low-level verbose GC functions
7659 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7660 less than it used to -- the GC-NOTIFY-FOO functions are now under
7661 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7662 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7663 in only one place in the source code, and propagates it automatically
7664 everywhere that it's needed. Thus e.g. when I bump the version from
7665 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7666 * The C source files now include boilerplate legalese and documentation
7667 at the head of each file (just as the Lisp source files already did).
7668 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7669 to his page will be replaced with a link to his new CLiki service.
7671 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7673 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7674 * The build process now looks for GNU make under the default name "gmake",
7675 instead of "make" as it used to. If GNU make is not available as "gmake"
7676 on your system, you can change this default behavior by setting the
7677 GNUMAKE environment variable.
7678 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7679 can build without error under CMU CL.
7681 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7683 * There is now a partial SBCL user manual (with some new text and some
7684 text cribbed from the CMU CL manual).
7685 * The beginnings of a profiler have been added (starting with the
7686 CMU CL profiler and simplifying and cleaning up). Eventually the
7687 main interface should be through the TRACE macro, but for now,
7688 it's still accessed through vaguely CMU-CL-style functions and macros
7689 exported from the package SB-PROFILE.
7690 * Some problems left over from porting CMU CL to the new
7691 cross-compilation bootstrap process have been cleaned up:
7692 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7693 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7694 part when getting rid of the compiler *BACKEND* stuff.)
7695 ** The value of *NULL-TYPE* was screwed up, because it was
7696 being initialized before the type system knew the final
7697 definition of the 'NULL type. This screwed up several key
7698 optimizations in the compiler, causing inefficiency in all sorts
7699 of places. (I found it because I wanted to understand why
7700 GET-INTERNAL-RUN-TIME was consing.)
7701 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7702 PROCLAIM FTYPE information. Unfortunately this broke binary
7703 compatibility again, since now the forms output by DEFGENERIC
7704 to refer to functions which didn't exist in 0.6.3.
7705 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7706 can use the new (as of 0.6.3) transform for SOME into MAP into
7708 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7709 values to (INTEGER 0 1000000), so that the time code will no longer
7710 occasionally get blown up by Linux returning 1000000 microseconds
7711 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7712 its output conform to the ANSI spec. (Alas, this makes its output
7713 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7714 * A full call to MAP NIL with a single sequence argument no longer conses.
7715 * fixes to problems pointed out by Martin Atzmueller:
7716 * The manual page no longer talks about multiprocessing as though
7717 it were currently supported.
7718 * The ILISP support patches have been removed from the distribution,
7719 because as of version 5.10.1, ILISP now supports SBCL without us
7720 having to maintain patches.
7721 * added a modified version of Raymond Toy's recent CMU CL patch for
7722 EQUALP comparison of HASH-TABLE
7724 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7726 * The system still can't cross-compile itself with
7727 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7728 entails), but at least it can compile more of itself that way
7729 than it used to be able to, and various buglets which were uncovered
7730 by trying to cross-compile itself that way have now been fixed.
7731 * This release breaks binary compatibility again. This time
7732 at least I've incremented the FASL file format version to 2, so that the
7733 problem can be detected reliably instead of just causing weird errors.
7734 * various new style warnings:
7735 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7736 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7737 ** using the lexical binding of a variable named in the *FOO* style
7738 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7739 as specified by ANSI.
7740 * *RANDOM-STATE* is no longer automatically initialized from
7741 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7742 default behavior of the system is to repeat its behavior every time
7743 it's run. If you'd like to change this behavior, you can always
7744 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7745 old convention there was no comparably easy way to get the system to
7746 repeat its behavior every time it was run.
7747 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7748 FTYPE declarations has been removed, in favor of their ANSI
7749 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7750 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7751 the types of their sequence arguments can be determined at compile time.
7752 This is done through a new open code expansion for MAP which eliminates
7753 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7754 argument types can be determined at compile time.
7755 * The optimizer now transforms COERCE into an identity operation when it
7756 can prove that the coerced object is already of the correct type. (This
7757 can be a win for machine generated code, including the output of other
7758 optimization transforms, such as the MAP transform above.)
7759 * Credit information has been moved from source file headers into CREDITS.
7760 * Source file headers have been made more standard.
7761 * The CASE macro now compiles without complaining even when it has
7764 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7766 * (Note that the way that the PCL macroexpansions were rewritten
7767 to accommodate the change in DEFGENERIC below breaks binary
7768 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7769 not run under sbcl-0.6.2. Once we get out of alpha releases,
7770 i.e. hit release 1.0.0, we'll probably try to maintain binary
7771 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7772 and sbcl-1.4.4. Until then, however, it might be fairly common
7773 for maintenance releases to break binary compatibility.)
7774 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7776 * The reporting of unhandled signals has been changed to print some
7777 explanatory text as well as the report form. (Previously only
7778 the report form was printed.)
7779 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7780 it defines, so that the compiler no longer issues undefined function
7781 warnings for compiled-but-not-yet-loaded generic functions.
7782 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7783 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7784 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7785 section of the ANSI spec are supported.
7786 * The "" nickname for the "KEYWORD" package has been removed.
7787 The reader still handles symbol tokens which begin with a package marker
7788 as keywords, but it doesn't expose its mechanism for doing so in the
7789 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7790 * The system now issues STYLE-WARNINGs for contradictory TYPE
7791 proclamations. (Warnings for contradictory FTYPE proclamations would
7792 be nice too, but those can't be done usefully unless the type system
7793 is made smarter about FUNCTION types.)
7794 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7795 systematized, so that "*target-*.lisp is supposed to exist only on the
7796 target and imply that there's a related file which exists on the
7797 host, and *host-*.lisp is supposed to exist only on the host and imply
7798 that there's a related file which exists on the target. This involves a
7799 lot of renaming. Hopefully the acute confusion caused by the renaming
7800 will be justified by the reduction in chronic confusion..
7801 ** runtime-type.lisp -> early-target-type.lisp
7802 ** target-type.lisp -> late-target-type.lisp
7803 ** early-host-format.lisp -> early-format.lisp
7804 ** late-host-format.lisp -> late-format.lisp
7805 ** host-error.lisp -> misc-error.lisp
7806 ** early-error.lisp -> early-target-error.lisp
7807 ** late-error.lisp -> late-target-error.lisp
7808 ** host-defboot.lisp -> early-defboot.lisp
7809 ** code/misc.lisp -> code/target-misc.lisp
7810 ** code/host-misc.lisp -> code/misc.lisp
7811 ** code/numbers.lisp -> code/target-numbers.lisp
7812 ** code/early-numbers.lisp -> numbers.lisp
7813 ** early-host-type.lisp -> early-type.lisp
7814 ** late-host-type.lisp -> late-type.lisp
7815 ** host-typep.lisp -> typep.lisp
7816 ** load.lisp -> target-load.lisp
7817 ** host-load.lisp -> load.lisp
7818 ** host-disassem.lisp -> disassem.lisp
7819 ** host-insts.lisp -> insts.lisp
7820 ** byte-comp.lisp -> target-byte-comp.lisp
7821 ** host-byte-comp.lisp -> byte-comp.lisp
7822 ** host-signal.lisp -> signal.lisp
7823 ** host-defstruct.lisp -> defstruct.lisp
7824 ** late-target-type.lisp -> deftypes-for-target.lisp
7825 Furthermore, several other previously target-only files foo.lisp (e.g.
7826 hash-table.lisp and random.lisp) have been split into a target-and-host
7827 foo.lisp file and a target-only target-foo.lisp file, with their key type
7828 definitions in the target-and-host part, so that the cross-compiler will
7829 know more about target types.
7830 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7831 gone away. In their place are various *BACKEND-FOO* variables
7832 corresponding to the slots of the old structure.
7833 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7834 into the target SBCL has been fixed.
7835 * The chill.lisp system for loading cold code into a running SBCL
7837 * Support for the CMU CL "scavenger hook" extension has been removed.
7838 (It was undocumented and unused in the CMU CL sources that SBCL was
7839 derived from, and stale in sbcl-0.6.1.)
7840 * Various errors in the cross-compiler type system were detected
7841 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7842 (enabling various consistency checks). Many of them were fixed,
7843 but some hard problems remain, so the compiler is back to
7844 running without *TYPE-SYSTEM-INITIALIZED* for now.
7845 * As part of the cross-compiler type system cleanup, I implemented
7846 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7847 * I have started adding UNCROSS calls throughout the type system
7848 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7849 on cross-compiler input files will be able to go away, and various
7851 * CONSTANTP now returns true for quoted forms (as explicitly required
7854 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7856 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7857 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7858 (MAKE-LIST -1). In the longer term, it ought to become true
7859 that declarations are assertions even at SAFETY 1. For now, it's not
7860 quite true even at SAFETY 3, but it's at least more nearly true..
7861 (Note that this change seems to increases the size of the system by
7862 O(5%) and to decrease the speed of the compiler by 20% or more.)
7863 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7864 for the problem of printing dozens of lines of distracting information
7865 about low-level system machinery as part of the top stack frame
7866 on entry to the debugger when an undefined function was called.
7867 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7868 is not reset to COMMON-LISP-USER.
7869 * Compilation of stuff related to dyncount.lisp has been made conditional
7870 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7871 smaller. The various dyncount-related symbols have been moved into
7872 a new "SB-DYNCOUNT" package.
7873 * tty-inspect.lisp has been renamed to inspect.lisp.
7874 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7875 feature has gone away. (When we eventually port to other flavors of
7876 libc and/or Unix, we'll try to make the differences between flavors
7877 invisible at the user level.)
7878 * Various other *FEATURES* tags, and/or their associated conditionals,
7879 have been removed if obsolescent, or given better documentation, or
7880 sometimes given more-mnemonic names.
7882 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7884 * tidied up "make.sh" script
7885 * tidied up system directory structure
7886 * better "clean.sh" behavior
7887 * added doc/FOR-CMUCL-DEVELOPERS
7888 * many many small tweaks to output format, e.g. removing possibly-confusing
7889 trailing #\. character in DESCRIBE-INSTANCE
7890 * (EQUALP #\A 'A) no longer signals an error.
7891 * new hashing code, including EQUALP hashing
7892 * tidied up Lisp initialization and toplevel
7893 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7894 * command line argument processing
7895 * added POSIX-GETENV function to deal with Unix-ish environment variables
7896 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7897 terminating SBCL on EOF
7898 * non-verbose GC by default
7899 * There is no more "sbcl" shell script; the sbcl file is now the C
7900 runtime executable (just like CMU CL).
7901 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7903 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7904 symbol and package information as Lisp native symbol and package objects
7905 instead of strings naming symbols and strings naming packages. This way,
7906 whenever packages are renamed (as in warm init), debug information is
7907 transformed along with everything else.
7908 * tweaked the optimization policy declarations which control the building
7909 of SBCL itself. Now, among other things, the system no longer saves
7910 source location debugging information. (This helps two problems at once
7911 by reducing SBCL size and by keeping SBCL from trying to look for its
7912 sources -- which may not exist -- when reporting errors.)
7913 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7914 debugging and testing purposes
7915 * cleaned up printing, making the printer call PRINT-OBJECT for
7916 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7917 methods, giving nearly-ANSI behavior
7918 * converted almost all special variables to use *FOO* naming convention
7919 * deleted PARSE-TIME functionality, since it can be done portably
7920 * moved some files out of cold init into warm init
7921 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7923 * regularized formatting of source files
7924 * added an install.sh script
7925 * fixed ridiculous memory usage of cross-compiler by making
7926 compiler/alloc.lisp not try to do pooling unless it can hook
7927 itself into the GC of the cross-compilation host. Now the system
7928 builds nicely on my old laptop.
7929 * added :SB-ALLOC in target-features.lisp-expr
7930 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7931 was not implemented)
7932 * re-did condition handling and note reporting in the compiler. Notes
7933 are no longer handled by signalling conditions. Style warnings
7934 and warnings are handled more correctly and reported in such a way
7935 that it's easy to find one or the other in your output (so that you
7936 can e.g. figure out which of many problems caused COMPILE-FILE to
7938 * changed the severity of several compiler warnings from full WARNING
7939 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7940 compiler note reporting so that it doesn't use the condition system
7941 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7942 COMPILE-FILE command)
7943 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7944 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7945 no longer supported, since their implementation was deeply intertwingled
7946 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7947 * removed bogus "support" for compiler macros named (SETF FOO), and
7948 removed the compiler macro for SETF INFO (but only after making a fool
7949 of myself on the cmucl-imp mailing list by posting a bogus patch for
7950 DEFINE-COMPILER-MACRO..)
7951 * Compiled files containing forms which have side effects on the Lisp
7952 reader (such as DEFPACKAGE forms) are now handled more correctly.
7953 (Compiler queuing of top level lambdas has been suppressed by setting
7954 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7955 * deleted various currently-unused source files, e.g. gengc.lisp. They
7956 may be added back at some point e.g. when porting to other architectures,
7957 but until they are it's distracting to distribute them and to try to
7959 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7960 there were so many of them they're just distractions, and UNCROSS is
7961 known to be able to handle the current sources
7962 * moved PROFILE functionality into TRACE, so that it will be clear
7963 how the wrapping and unwrapping of functions when you profile them
7964 interacts with the wrapping and unwrapping of functions when you
7965 trace them. (Actually, the functionality isn't there yet, but at least
7966 the interface specification is there. Hopefully, the functionality will
7967 arrive with some future maintenance release.)
7968 * removed host-oops.lisp
7969 * changed signature of QUIT function to allow UNIX-CODE argument
7970 * fixed READ-SEQUENCE bug
7971 * tweaked verbose GC output so that it looks more like the progress
7972 output that ANSI specifies for functions like LOAD
7973 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7974 * added <http://sbcl.sourceforge.com> to the banner information printed by