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Steel Bank Common Lisp Changelog

What's new in Steel Bank Common Lisp 1.3.1

Jan 28, 2016
  • enhancement: SB-THREAD support for ARM64.
  • enhancement: compiling an out-of-line DEFSTRUCT constructor call will warn if a defaulted value is incompatible with its slot type.
  • enhancement: a local INLINE declaration on a structure constructor will work as intended, subject to any other factors that inhibit inlining, even if the DEFSTRUCT was not itself within a global INLINE proclamation for the named constructor
  • enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
  • enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots of type SB-EXT:WORD
  • enhancement: the interleaved structure slot optimization from release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
  • enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt is made to join the current thread
  • bug fix: NTH-VALUE does not cause stack overflow. (#1511419)
  • bug fix: structure constructor type checking is better. (#1508735)
  • bug fix: supplied-p variables for unused optional or keyword variables no longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the backtrace machinery) (#1498644)
  • bug fix: Backtrace correctly handles undefined-function frames on MIPS.
  • bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS (fixes issues with floating-point type derivation in the compiler).
  • bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS and HPPA.
  • bug fix: MIPS context register access now masks to 32 bits (fixing issues parsing negative-fixnum values for internal-error arguments and escaped debug variables on 64-bit CPUs).
  • bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS now works correctly.
  • bug fix: Callback parameter (argument) handling on MIPS is now vastly more correct.
  • bug fix: �CREMENT-SEMAPHORE adjusts the remaining timeout after a spurious wakeup

New in Steel Bank Common Lisp 1.3.0 (Jan 28, 2016)

  • minor incompatible change: the environment passed to a macro/setf/deftype expander is not always an object of type SB-KERNEL:LEXENV. It can be nil, as is permissible by the standard.
  • enhancement: ported to ARM64 Linux.
  • enhancement: a new interpreter is included which has many benefits over sb-eval. It is disabled by default. See src/interpreter/README for instructions to enable it, and further details.
  • bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET would fail to perform "normal semantic processing such as macro expansion" as stipulated by X3J13 issue LOAD-TIME-EVAL.
  • bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "

New in Steel Bank Common Lisp 1.2.16 (Jan 28, 2016)

  • enhancement: by default, timers with a repeat interval do not "catch up" by repeatedly calling their function after a clock discontinuity such as a suspend and resume cycle
  • bug fix: correctly restore multiple values on the stack in the presence of alien calls. (#1489590)
  • bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE is a subtype of CHARACTER.
  • bug fix: an EQL method specializer no longer causes garbage retention if there are no extant methods using the specializer. (#492851)

New in Steel Bank Common Lisp 1.2.15 (Sep 14, 2015)

  • new feature: DEPRECATION declaration for functions, variables and types causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation" section of the manual.
  • enhancement: ASDF updated to 3.1.5. (#1476867)
  • enhancement: definitions within PROGN get proper source locations when compiled (needs latest Slime to take advantage of this). (#1473147)
  • enhancement: source locations for DEFCLASS slots now point directly to the slot definitions, not the whole DEFCLASS form.
  • bug fix: better source location in the presence of quoted forms. (#1370561)
  • bug fix: better source locations inside backqoute. (#1361502)
  • bug fix: HANDLER-BIND requires that the handler-function be a function designator at the time of binding establishment. (#1480679)
  • bug fix: inlined functions surrounded by nested macrolets are properly inlined. (#309123)

New in Steel Bank Common Lisp 1.2.14 (Sep 14, 2015)

  • minor incompatible change: The name of a compiled anonymous lambda as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have a lambda-list-like list following the introductory LAMBDA that is not in general a syntactically valid lambda list. Specifically, it won't retain default values, supplied-p variables, or &KEY or &AUX bindings.
  • enhancement: DESTRUCTURING-BIND has been totally reimplemented from scratch to address a handful of performance and correctness issues. Some minor behavioral differences exist regarding order of evaluation of default forms for unsupplied &OPTIONAL and &KEY arguments when nested destructuring patterns are involved. (#707556, #707573, #707578, #708051)
  • enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (#1186238, #1036716)
  • enhancement: sb-unicode:normalize-string has a new optional argument, FILTER, a callback which controls which decomposed characters are collected. Useful for stripping away diacritics more efficiently.
  • bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change after a call of ADJUST-ARRAY. (#1333731)
  • bug fix: Dynamic-extent allocation with a loop between allocating a value and the start of its environment no longer discards the allocated data when the loop is taken. (#1472785)
  • bug fix: Variable-reference elimination no longer generates incorrect code under certain circumstances. (#1446891)
  • bug fix: variables with EQL types are no longer treated as constants by VOPs, which caused problems with closures being allocated for such variables, but they remained unused. (#1390149)

New in Steel Bank Common Lisp 1.2.13 (Sep 14, 2015)

  • incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE return the new count
  • enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
  • enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all situations
  • bug-fix: TRUENAME works properly on broken symlinks presented as directories. (#1400003)
  • bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right order of argument evaluation. (#1458190)
  • bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
  • bug fix: DEFSETF lambda lists should not permit argument destructuring.
  • bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain situations incorrectly return the result of a SLOT-MISSING method instead of always returning the new value. (#1460381)
  • bug fix: a DEFMACRO occurring not at toplevel and capturing parts of its lexical environment (thus being a closure) caused expressions involving the macro name to cause corruption in the pretty-printer due to faulty introspection of the lambda list of a closure.
  • bug fix: out of line MAP/MAP-INTO check that the results produced by the function are of the matching sequence type. (#1459581)
  • bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.

New in Steel Bank Common Lisp 1.2.12 (Sep 14, 2015)

  • minor incompatible change: the SB-C::*POLICY* variable is no longer a list. Code which manipulated it as such (including but not limited to non-bundled releases of ASDF) will need to be revised.
  • enhancement: The input stream for COMPILE-FILE implements STREAM-LINE-COLUMN.
  • enhancement: EVAL errors that occur by way of LOAD report the starting line and column number of the erring toplevel form. (#565247)
  • optimization: better MAP and MAP-INTO on known vector result types.
  • bug fix: Read/modify/write macros accessing a place which is a composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)), do not access subforms more than once. (#1450968)
  • bug fix: short form of DEFSETF no longer allows trailing junk.
  • bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3 regarding argument evaluation order. (#1452539)
  • bug fix: POP works as specified in CLHS if the setter for its argument has a side-effect on the existing CAR value. (#1454021)
  • bug fix: Reading "#()" with a positive numeric argument signals a reader error. As specified, reading "#1()" has undefined consequences, so correct portable code should be indifferent to this. (#1252100)
  • bug fix: Malformed reader conditionals such as "(#-no-such-feature)" and "(#+sbcl)" no longer parse as NIL. (#1454400)

New in Steel Bank Common Lisp 1.2.11 (Apr 28, 2015)

  • Enhancement: SET-PPRINT-DISPATCH will warn when given an expression in which any part is unrecognizable as a legal type-specifier. The dispatch table will be altered, but the new entry is disabled. Subsequent type-defining forms will cause pprint-dispatch tables to re-examine whether any disabled entries should be enabled. (#1429520)
  • Enhancement: Loading code containing calls to a deprecated function will, under most circumstances, signal warnings similar to compiling such code. The usual caveat holds about not detecting calls through a computed name, as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
  • Enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands to a constant (VALUES integer integer) indicating the source line/column from which it was read, intended for logging Lisp runtime errors in a style similar to that afforded by the C preprocessor __LINE__ macro. Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
  • Enhancement: improved source locations for VOPs, alien types and declarations.
  • Bug fix: functions in :FINAL deprecation have the correct docstring. No visible change, as no such functions presently exist. (#1439151)
  • Bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error if OTHER names either a macro or special-operator. (#1439921)

New in Steel Bank Common Lisp 1.2.10 (Mar 31, 2015)

  • minor incompatible change: all SOCKINT::WIN32-* functions have been deprecated with EARLY deprecation state
  • minor incompatible change: performing introspection via the system-internal SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily a function, as it always was before. (Affects swank-fancy-inspector)
  • enhancement: The value of SXHASH on bit-vectors of length equal to the word size now depends on the vector's contents instead of being constant; its value on bit-vectors of length divisible by the word size now depends also on the contents of the vector's last word.
  • bug-fix: sb-bsd-sockets on win32 uses proper C function declarations. (#1426667)
  • bug fix: A new dead code elimination phase removes dead code loops that confuse stack analysis. (#1255782, #308914)
  • bug fix: A toplevel form which was simple enough to bypass the main compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN would produce an invalid fasl file. (#1427050)
  • bug fix: The compiler no longer signals an internal error when encountering invalid FUNCTION forms like (function 1)
  • bug fix: express proper dependencies in the ASDF contrib, to support systems where make runs in parallel. (#1434768; thanks to Nikhil Benesch)

New in Steel Bank Common Lisp 1.2.9 (Feb 27, 2015)

  • minor incompatible change and bug fix: unboxed numeric constants on x86oids are arranged in memory differently, and the disassembler does not show them separately in DISASSEMBLE, but does if DISASSEMBLE-CODE-COMPONENT is used. (#1421987)
  • optimization: The compiler's treatment of type specifiers makes it slightly faster and more memory-efficient. Portable code should be indifferent to this change, however, users of SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL) and (MEMBER NIL T) are both internally collapsed to the former, so that the latter can never be obtained as part of an FTYPE.
  • optimization: a TYPEP call in which the second argument is not a QUOTE form but nevertheless recognized as a compile-time constant might open-code the test. One scenario for this involves backquote, such as (TYPEP x `(my-type ,some-arg)). Code which relied upon deferring until runtime should declare (NOTINLINE TYPEP). [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3, code requiring delayed evaluation could be unportable though.]
  • enhancement: unused variables at the top-level are now reported. (#492200)
  • bug fix: DEFCLASS handles cyclic {super,meta}class relations better (#1418883)
  • bug fix: compiler no longer signals an error when compiling certain function calls. (#1416704, #404441, #1417822, #1234919)
  • bug fix: compiler doesn't stumble on a LOGIOR transform. (#1389433)
  • bug fix: more robust debugger and backtraces. (#1413850, #1099500, #1412881, #945261, #1419205, #1409402)
  • bug fix: files larger than 4GB can now be compiled.
  • bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
  • bug fix: file-position didn't work on large files on win32. (#1271545)
  • bug fix: callbacks from foreign threads can work without enabling sb-safepoint.
  • bug fix: sb-introspect:function-lambda-list works properly on interpeted macros. (#1387404)
  • bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (#886418)
  • bug fix: compiler no longer fails to dump a multidimensional array constant involving a circular reference to itself
  • bug fix: conditional and nested DX allocation no longer confuse the compiler in STACK analysis. (#1044465)
  • bug fix: sb-rotate-byte constant folding bug fixed. (#1423682)

New in Steel Bank Common Lisp 1.2.8 (Feb 2, 2015)

  • enhancement: better error and warning messages. (#1314767, #736383)
  • enhancement: backtrace for invalid argument count produces the exact supplied arguments including the extra ones, on x86, x86-64 and ARM.
  • enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which are used before the structure is defined; similarly for the predicate.
  • optimization: FORMAT NIL with only ~a and string arguments is transformed into CONCATENATE.
  • optimization: POSITION and FIND when inlined into code that is compiled with qualities of safety < 2 and speed > space will no longer signal an error on circular lists, but will potentially loop forever if given no :END constraint. As was always the case, calls that are not inlined are safe regardless of lexical policy.
  • bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0)) no longer cause debugger failure when printing a backtrace
  • bug fix: more resilience to deleted code. (#1308328, #1390544)
  • bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT did not work, and now it does.

New in Steel Bank Common Lisp 1.2.7 (Jan 7, 2015)

  • optimization: returning constant values refers to preboxed constants more reliably. (#1398785)
  • enhancement: a STYLE-WARNING is produced if a compiler-macro is defined for a function after at least one ordinary (not inlined) call to that function was compiled, indicating a likely compilation order problem. Likewise a warning ensues if a call is compiled to a function that is subsequently proclaimed INLINE.
  • enhancement: always lose() when something goes wrong while saving a core (instead of just printing an error on stderr in some situations).
  • enhancement: frames in the debugger are now restartable by default.
  • bug fix: restore error handling on Windows x86.
  • bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT at compile-time when possible. (#330299)
  • bug fix: parsing of malformed type specifiers no longer results in a memory-fault-error.
  • bug fix: LOOP properly destructures nested lists in WITH.
  • bug fix: MACROEXPANDing the redefinition of an alien structure type no longer signals the wrong error.
  • bug fix: PROGV doesn't get confused by forced DEBUG 3 (#1405456).

New in Steel Bank Common Lisp 1.2.6 (Dec 8, 2014)

  • enhancement: SERVE-EVENTS uses the poll() system call in lieu of select() if the OS has the former. Previously poll() was used only if waiting on exactly one file descriptor.
  • enhancement: efficiency of access to untagged structure slots is improved on x86-64, and the order of slots in memory is exactly as specified by defstruct, simplifying use of structures as arguments to foreign calls.
  • bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms. (#1357826)
  • bug fix: GC memory corruption during internal memory handling.
  • bug fix: duplicate effective-slot-definition objects as compared by EQ on name could be present in CLASS-SLOTS of a class whose metaclass was structure-class or condition-class. (#1049423)
  • bug fix: HANDLER-BIND with empty bindings works again; regression in 1.2.5. (#1388707)
  • bug fix: ATOMIC-INCF works on structure slots in interpreted code. (#1381867)
  • bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and (member #\a #\c). (#1392068)
  • bug fix: READ sometimes accidentally preserved a whitespace character after a token when it should not have. (#327790)

New in Steel Bank Common Lisp 1.2.5 (Oct 29, 2014)

  • Changes:
  • enhancement: sb-bsd-sockets now has basic support for IPv6
  • enhancement: An sb-unicode package has been added, containing many functions related to handling Unicode text
  • enhancement: The reader now normalizes symbols to Normalization Form KC (NFKC). This behavior can be disabled with SB-EXT:READTABLE-NORMALIZATION
  • enhancement: a style-warning is signaled if OPTIMIZE declarations multiply specify a quality with differing values. (lp#310267)
  • bug fix: conservatively pointed to pages wipe out unused dwords so that they cannot act as false roots in turn.
  • bug fix: the walker's handling of lexical variable and symbol-macro bindings is improved (lp#375326, lp#1368305)
  • bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause contains an undefined condition type; regression in 1.1.19 (lp#1378939)
  • bug fix: in interpreted code, inequality predicates did not type-check arguments that weren't examined, and a 1-argument use of MIN or MAX accepted a complex number. (lp#1373702)
  • bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly. (

New in Steel Bank Common Lisp 1.2.4 (Sep 30, 2014)

  • enhancement: the sequence functions MAP, CONCATENATE and MERGE now call the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and SEQUENCE:MERGE respectively when the specified result type designates an extended sequence.
  • bug fix: Wrong binding order of supplied-p parameters in macro lambda lists. (#721135)
  • bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the universal superclass (#1332983)
  • bug fix: reading an uninterned symbol whose print name has the syntax of an integer signals an error. (#310062)
  • bug fix: the walker is less likely to be confused when walking LET* forms with special bindings and use of those bindings and others of the same name.
  • bug fix: a rare bug affecting 32-bit platforms resulting in a fatal condition with the message "Globaldb rehash failure" has been fixed.

New in Steel Bank Common Lisp 1.2.3 (Aug 29, 2014)

  • enhancement: DOCUMENTATION works on instances of FUNCALLABLE-STANDARD-CLASS
  • enhancement: ASSERT reports arguments of calls to lexical functions in additional to global functions.
  • enhancement: ASDF updated to 3.1.3
  • enhancement: UIOP can be loaded without ASDF.
  • bug fix: some methods on CHANGE-CLASS did not finalize the new class before accessing its class-precedence list.
  • bug fix: CHANGE-CLASS no longer fails on unbound slots in the source object.
  • bug fix: CHANGE-CLASS signals an appropriate error when the destination class is a FORWARD-REFERENCED-CLASS.
  • bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for which initargs have been supplied.
  • bug fix: saving cores on ARM was broken since the introduction of GENCGC. (#1349795)
  • bug fix: macroexpanding a backquoted expression involving ",." outside of the compiler failed. (#1354623)

New in Steel Bank Common Lisp 1.2.2 (Jul 29, 2014)

  • incompatible change: the #\` ("backquote") reader macro was reimplemented to support robust pretty-printing. Reading a form involving #\` produces an invocation of the QUASIQUOTE ordinary macro which may contain subforms that are not lists. Code that unportably attempts operations on un-evaluated forms resulting therefrom, e.g. (SUBST a b (read-from-string "`(x (,y))")) might generate incorrect results and/or errors.
  • enhancement: support for GNU/kFreeBSD x86.
  • enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x) and DEFGLOBAL variables of type fixnum.
  • enhancement: arithmetic constant reduction is now performed on defconstant constants too. (#1337069).
  • bug fix: certain ftype proclamations containing &optional t &rest t no longer cause subsequent definitions to signal bogus style-warnings.
  • bug fix: #\Bell and #\Bel now read to different characters. (#1319452).
  • bug fix: CAS SYMBOL-VALUE on locally special variables didn't work. (#1098355)

New in Steel Bank Common Lisp 1.2.1 (Jul 3, 2014)

  • enhancement: GENCGC is enabled on ARM.
  • enhancement: better error reporting for invalid calls to local functions.
  • enhancement: support for GNU/kFreeBSD distributions. (#1079954, thanks to Christoph Egger)
  • enhancement: experimental support for threads on NetBSD/x86-64. (thanks to Robert Swindells)
  • enhancement: support for DragonFly BSD. (#1292845, thanks to Vasily Postnicov)
  • bug fix: TYPE-OF must not return AND/OR/NOT expressions. (#1317308)
  • bug fix: accessing NIL arrays stopped producing errors. (#1311421)
  • bug fix: DISASSEMBLE no longer prints unwanted stuff. (#1251861)
  • bug fix: compiling SVREF on unknown types no longer produces scary errors. (#1258716)
  • bug fix: assorted LOOP fixes and enhancements. (#645534, #1322923, #700538, #613876, #695286, #798388)
  • bug fix: silence compiler notes from the SEARCH transform. (#1071310)
  • bug fix: array type intersection handles T and unknown element types correctly. (#1258716)
  • bug fix: fix a corner case in array type unparsing that would result in misleading translations from our internal type representation.
  • bug fix: array-rank now sees through union and intersection types. (#1310574)
  • bug fix: when DECLARE expressions are in the wrong place, be careful not to attempt to evaluate the subforms. (#573747; thanks to Roman Marynchak)
  • bug fix: misplaced and missing declarations in DEFTRANSFORM. (#1066451)
  • bug fix: FBOUNDP returned NIL for a class of incorrect function names instead of signaling an error. (#1095483)
  • bug fix: fix a compile-time AVER in regalloc: lifetime analysis used to (rarely) introduce duplicate conflict markers in a single TN/block pair. (#1327008)

New in Steel Bank Common Lisp 1.2.0 (Jul 3, 2014)

  • bug fix: read-time-eval backquote context mixup. (#1321047)
  • enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the report of the signaled conditions lists currently running threads.
  • enhancement: ported to ARM linux.
  • enhancement: sb-gmp contrib has been updated. (#1305266)
  • enhancement: new contrib sb-mpfr by Stephan Frank.
  • bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE (#1315846, thanks to Mark Cox)
  • bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic function-designator to a function only as needed. (#1012335)
  • bug fix: remove references to asdf-install from the manual. (#1207544, thanks to Thomas Hlavaty)
  • bug fix: handle --without-xxx options to make.sh more carefully. (#1246665, thanks to Richard M Kreuter)
  • bug fix: prevent maybe-delete-exit from doing semantically broken things with local exits. (#309099, #518099, #533930)
  • bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required by AMOP. (#861004)

New in Steel Bank Common Lisp 1.2.0 (May 29, 2014)

  • bug fix: read-time-eval backquote context mixup. (#1321047)
  • enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the report of the signaled conditions lists currently running threads.
  • enhancement: ported to ARM linux.
  • enhancement: sb-gmp contrib has been updated. (#1305266)
  • enhancement: new contrib sb-mpfr by Stephan Frank.
  • bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE (#1315846, thanks to Mark Cox)
  • bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic function-designator to a function only as needed. (#1012335)
  • bug fix: remove references to asdf-install from the manual. (#1207544, thanks to Thomas Hlavaty)
  • bug fix: handle --without-xxx options to make.sh more carefully. (#1246665, thanks to Richard M Kreuter)
  • bug fix: prevent maybe-delete-exit from doing semantically broken things with local exits. (#309099, #518099, #533930)
  • bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required by AMOP. (#861004)

New in Steel Bank Common Lisp 1.1.18 (Apr 29, 2014)

  • optimization: COERCE is now more effecient for more cases when the type is known at compile-time. (lp#1309815)
  • bug fix: correctly inherit condition initforms. (lp#1300904)
  • bug fix: properly pprint literal functions inside nested lists. (lp#1300716)
  • bug fix: more-correctly handle array-type unity (broken for ages, causing compilation problems since 1.1.13.x due to smarter TYPEP type propagation, reported by jasom in #lisp).

New in Steel Bank Common Lisp 1.1.17 (Apr 5, 2014)

  • enhancement: printing backtraces respects SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments (lp#1261646)
  • optimization: defstruct out-of-line accessor are now as fast as inlined. (lp#1264924)
  • bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART instances with a test-function (reported by Vivitron in #sbcl)
  • bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
  • bug fix: Change COND error message (lp#1254511)
  • bug fix: LOAD is no longer confused when called on a directory. (lp#1077996)
  • bug fix: MAKE-CONDITION reports names of missing condition classes properly (lp#1199223)
  • bug fix: restore building with clang. (lp#1293643)
  • bug fix: restore building on SPARC (broken since 1.1.15).
  • bug fix: improved FreeBSD support.
  • bug fix: PPC floating point conversion corrupted stack.

New in Steel Bank Common Lisp 1.1.12 (Oct 1, 2013)

  • enhancement: Add sb-bsd-sockets:socket-shutdown, for calling shutdown(3). (thanks to Jan Moringen, #1207483)
  • enhancement: document extensible sequences. (thanks to Jan Moringen, #994528)
  • optimization: EQUAL and EQUALP transforms are smarter. (thanks to Elias Martenson, #1220084)
  • optimization: CHAR-EQUAL is faster for constant and base-char arguments.
  • bug fix: probe-file now can access symlinks to pipes and sockets in /proc/pid/fd on Linux. (reported by Eric Schulte)
  • bug fix: SBCL can now be built on Solaris x86-64.
  • bug fix: Floating point exceptions do not persist on Solaris anymore.
  • bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
  • bug fix: handle compiler-error in LOAD when it's not run from inside EVAL. (#1219601)
  • bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base. (thanks to Stephan Frank)
  • bug fix: space allocation of result bignums in SB-GMP is more accurate. (thanks to Stephan Frank, #1206191)
  • bug fix: sb-safepoint can now reliably handle signal interruptions of foreign code. (#1133018)
  • bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback" constructors no longer fails to merge actual and default initargs (thanks to Jan Moringen, #1179858)
  • bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback" constructors handles non-KEYWORD initialization arguments more correctly.
  • bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, #884603)
  • bug fix: class definitions with CPLs inconsistent with their metaclasses are less likely to destroy the object system's integrity. (#309076)
  • bug fix: restart clause parsing in RESTART-CASE is more in line with the standard. (#1203585, thanks to Jan Moringen)
  • bug fix: silence a note from RESTART-CASE under high-SPEED optimization settings. (#1023721)
  • bug fix: getting the order of arguments to SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error rather than a failed AVER. (reported by Paul Nathan)
  • bug fix: Parsing of &optional/&key/&rest arguments now never overwrites arguments during copying on x86 and x86-64; it may still happen on other platforms when there are more fixed arguments than stack slots. (reported by Jan Moringen)

New in Steel Bank Common Lisp 1.1.11 (Aug 28, 2013)

  • enhancement: support building the manual under texinfo version 5. (lp#1189146)
  • enhancement: Windows builds no longer display the "Kitten of Death" message. A warning is instead appended to the regular banner, and may be muted with --noinform. (lp#728247)
  • enhancement: support building under new linker handling of syscalls under NetBSD. (thanks to Robert Swindells)
  • bug fix: undefined function errors are now properly reported on PPC and MIPS. (regression since 1.1.9)
  • bug fix: (funcall (function X junk)) didn't causes an error when X had a compiler macro. (thanks to Douglas Katzman).
  • bug fix: signal a warning when defining a setf-function when a setf-expander is already present. (thanks to Douglas Katzman).
  • bug fix: improved threading on PPC.
  • bug fix: ROOM works again on Windows. (lp#1206456)
  • bug fix: Streams were flushed even when there was one byte still left in the buffer. (lp#910213)
  • bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are either NIL or :ERROR.

New in Steel Bank Common Lisp 1.1.9 (Jul 4, 2013)

  • new feature: the contrib SB-GMP links with libgmp at runtime to speed up arithmetic on bignums and ratios. (contributed by Stephan Frank)
  • enhancement: disassemble now annotates some previously missing static functions, like LENGTH.
  • enhancement: clean.sh now also cleans doc/internals.
  • enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to print a symbol with a package prefix.
  • enhancement: The debugger and backtracing are more robust against buggy PRINT-OBJECT methods.
  • optimization: calls to static functions on x86-64 use less instructions.
  • optimization: compute encode-universal-time at compile time when possible.
  • optimization: when referencing internal functions as #'x, don't go through an indirect fdefn structure.
  • optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
  • optimization: (mod fixnum) type-checks are performed using one unsigned comparison, instead of two.
  • optimization: enable more modular arithmetic transforms in the presence of conditionals.
  • optimization: bitwise OR forms can now trigger modular arithmetic as well, when the result is known to be negative.
  • optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
  • optimization: comparisons between rationals and constant floats or between integers and constant ratios are now converted to rationals/integers at compile time.
  • optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
  • bug fix: problems with NCONC type derivation (reported by Jerry James).
  • bug fix: EXPT type derivation no longer constructs bogus floating-point types. (reported by Vsevolod Dyomkin)
  • bug fix: sb-bsd-sockets has correct declaration of the canonname field of addrinfo. (#1187041, patch by Jerry James)
  • bug fix: uninitialized type-error conditions can now be printed. (#1184586)
  • bug fix: tests for sb-bsd-sockets no longer use a predefined port for listening, allowing several tests to run in parallel.
  • bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction prefixes as used on x86 and x86-64 no longer sometimes print incorrectly. (#1085729)
  • bug fix: Specialised SIMD-PACK types can be negated.
  • bug fix: Modular arithmetic is more robust. (incidentally fixes another bug reported by Eric Marsden)
  • bug fix: FP return values from foreign calls are always rounded to single or double float precision on x87.
  • bug fix: Known-safe vector access on x86oids should not fail spuriously when the index is of the form (+ x constant-positive-integer).
  • bug fix: Remove GPL-licensed files from source distribution. (#1185668)
  • bug fix: backtrace printer no longer tries to create very large lists when the arg-count register is clobberred by other code. (#1192929)
  • bug fix: x86 should never signal an FP exception while boxing an FP value, a situation that lands us into ldb.

New in Steel Bank Common Lisp 1.1.8 (Jun 3, 2013)

  • notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
  • ROOM, plus a few SB-INTROSPECT functions) has been completely
  • rewritten; it may now exhibit different bugs than before.
  • new feature: minimal runtime/compiler intrastructure support for SSE
  • SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
  • feature :sb-simd-pack. This should enable intrinsics extensions as
  • libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
  • for maintaining a branch for so long.
  • enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
  • the working directory of the spawned process.
  • (lp#791800) (patch by Matthias Benkard)
  • enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
  • stack-allocated on PPC.
  • enhancement: "fixed objects" can now be stack-allocated on PPC.
  • enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
  • enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
  • also returns VOPs which do not translate any functions, and finds
  • defoptimizer types ir2convert and stack-allocate-result.
  • enhancement: better type derivation for APPEND, NCONC, LIST.
  • (lp#538957)
  • enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
  • heap in a manner similar to the GC rather than its previous ad-hoc
  • scheme, and is therefore no less and possibly more accurate.
  • fixes and enhancements related to Unicode:
  • the character database information has been updated to Unicode 6.2;
  • support for canonical and compatibility decomposition of characters has
  • been added, along with support for primary composition;
  • support for Unicode normalization forms of strings (NFC, NFKC, NFD and
  • NFKD) has been included;
  • querying the character database for code points not defined by Unicode
  • gives less wrong answers (lp#1178038, reported by Ken Harris)
  • enhancement: print intermediate evaluation results for some ASSERTed
  • expressions. (lp#789497) (patch by Alexandra Barchunova)
  • enhancement: x86-64 disassemblies are annotated with unboxed constant
  • values when there are references to (RIP-relative) unboxed constants.
  • bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
  • of quadratically with the size of the input in the worst case.
  • (lp#1096444)
  • bug fix: handle errors when initializing *default-pathname-defaults*,
  • sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
  • decoding errors, or directories being deleted.
  • bug fix: Loading a core with a discontiguous dynamic space now correctly
  • computes the amount of dynamic space used.
  • bug fix: disassembler missing ",8" on SHLD
  • bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
  • that provide an "invalid" stack frame link for the signal handler
  • itself now use the saved-fp-and-pc mechanism to pick up from the stack
  • frame in the interrupt (signal) context. This is known to affect
  • threaded FreeBSD/x86-64.
  • bug fix: some LOOP statements couldn't be compiled.
  • (lp#1178989)
  • bug fix: sb-sequence:dosequence works on literal vectors.
  • bug fix: errors in generic arithmetic show the assembly routine's
  • caller on x86 and x86-64. (lp#800343)
  • bug fix: Compile-time type errors should never result in COMPILE-FILE
  • failure. (lp#943953)
  • bug fix: Known bad local calls do not cause strange failures when
  • emitting or dumping code. (lp#504121)
  • bug fix: Multiply-inlined structure constructor don't cause IR2-time
  • codegen errors: type checks are inserted as necessary. (lp#1177703)
  • bug fix: Unsigned modular arithmetic is correctly converted into signed
  • modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
  • bug fix: a combination of inlined local function with &optional and
  • recursion no longer causes undescriptive compiler errors. (lp#1180992)
  • bug fix: sub-word BOOLEAN alien types now disregard higher order bits
  • when testing for non-zero-ness.
  • bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
  • (lp#1162301)
  • bug fix: Type mismatch for the value of conditional expressions are
  • correctly reported when detected at compile-time, instead of complaining
  • about a constant NIL (similar for non-EQ-comparable catch tags).
  • bug fix: Referring to INLINE global functions as values should not result
  • in a compilation failure. (lp#1035721)
  • optimization: faster ISQRT on fixnums and small bignums
  • optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
  • optimization: On x86-64, the number of multi-byte NOP instructions used
  • for code alignment is now always minimal.
  • optimization: On 64-bit targets, the compiler generates much faster
  • code for type checks for types known at compile time that are smaller
  • than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
  • their COMPLEX variants.
  • optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
  • compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
  • optimization: ROOM no longer conses so egregiously on non-x86oid
  • systems.
  • optimization: associative bitwise operations reassociate patterns like
  • (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
  • rational values.
  • optimization: quasiquote expressions now perform more constant folding,
  • instead of consing equal lists at runtime. (lp#1026439)
  • optimization: local call analysis of inlined higher-order function
  • should converge more quickly, resulting in better code for complex
  • functions.
  • optimization: On x86-64, medium (word-sized but wider than 32 bits)
  • integer constants are handled more cleverly, especially when they
  • can be represented as sign-extended (signed-byte 32). (Based on a
  • patch by Douglas Katzman)
  • optimization: IF/IF conversion should reliably result in sane code
  • when (some of) the results of the inner IF are always false or
  • always true.
  • optimization: On x86oids, variable right shifts of machine words are
  • compiled into straight SAR/SHR, instead of going through the generic
  • VOP. (lp#1066204)

New in Steel Bank Common Lisp 1.1.7 (Apr 30, 2013)

  • enhancement: TRACE :PRINT-ALL handles multiple-valued forms. (#457053)
  • bug fix: :allocation slot option works for condition slots (#1049404)
  • bug fix: redefining conditions does not lead to multiple evaluations of hairy slot initfunctions anymore (#1164969)
  • bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes (#1164970)
  • bug fix: function constants now work as initforms and default initarg values of conditions (#539517)
  • bug fix: svref/(setf svref) on symbol macros don't crash the compiler anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
  • bug fix: no more bogus ## references when pretty printing backquoted forms with non-trivial structure sharing. (#1161218)
  • bug fix: Don't signal an error on (setf (documentation nil 'function) "doc"). Signal a style-warning instead when trying to set documentation of NIL for all other documentation types. (Reported by Zach Beane; regression since 2e52fa05.)
  • bug fix: modular arithmetic involving large constants and conditionals should no longer result in spurious dead code elimination. (Reported by Eric Marsden).
  • bug fix: our mach exception handler can seemingly called very early in the program execution process on OS X 10.8.0. Try and handle that case robustly, without potentially leaking mach ports too much.
  • optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.

New in Steel Bank Common Lisp 1.1.6 (Mar 30, 2013)

  • enhancement: the continuable error when defknown-ing over extant fndb entries can be ignored by passing :overwrite-fndb-silently t as a keyword argument to sb-c:defknown (after attributes). Useful to allow defknown to be re-loaded. Use with :allow-other-keys t for backward compatibility.
  • optimization: compiler is much faster in compiling SVREF and (SETF SVREF) forms.
  • bug fix: Prevent a make-array transform from modifying source forms causing problems for inlined code. Thanks to Bart Botta. (regression since 1.0.42.11-bis)
  • bug fix: clear-output calls the correct gray stream routine, sb-gray:stream-clear-output. (#1153257)
  • bug fix: an error is signalled for an invalid format modifier: ~. (#1153148)
  • bug fix: Better error messages for package operations (#1154776)
  • bug fix: delete-package on a nonexistent package should signal a cerror. (regression since 1.0.37.44).
  • bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds. (#1154946, #1072112)

New in Steel Bank Common Lisp 1.0.55 (Jan 9, 2012)

  • enhancements to building SBCL using make.sh:
  • --fancy can be specified to enable all supported feature enhancements.
  • --with- and --without- can be used to specify which features to build with.
  • --arch option can be used to specify the architecture to build for. (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not full-blows cross-compilation.)
  • enhancement: extended package prefix syntax :: which allows specifying name of the default interning package for the whole form.
  • enhancement: when *READ-EVAL* is true, arrays with element type other than T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
  • enhancement: MAKE-ALIEN signals a storage-condition instead of returning a null alien when malloc() fails. (#891268)
  • enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE conditions can be conveniently accessed through function with the same name, analogously to CONTINUE.
  • enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors from the printer by type, causing an error marker to be printed instead. (Thanks to Attila Lendvai)
  • enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and generally behave better when errors occur during printing.
  • enhancement: the test runner now takes a --report-skipped-tests argument to report the individual tests skipped as well as the number of skipped tests.
  • enhancement: undefined functions now appear in backtraces as ("undefined function") instead of ("bogus stack frame") on x86oids.
  • enhancement: detected deadlocks no longer cause stderr to be spammed, and deadlock errors are reported in an easier-to-decipher manner.
  • enhancement: DESCRIBE on type designators reports the expansion in more cases.
  • enhancement: SBCL now provides either an explicit :BIG-ENDIAN or :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack of the :LITTLE-ENDIAN feature. (Thanks to Luís Oliveira, #901661)
  • enhancement: better disassembly of segment-prefixes on x86 and other instruction prefixes (e.g. LOCK) on x86 and x86-64.
  • optimization: FIND and POSITION on bit-vectors are orders of magnitude faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
  • optimization: SUBSEQ on vectors of unknown element type is substantially faster. (#902537)
  • optimization: specialized arrays with non-zero :INITIAL-ELEMENT can be stack-allocated. (#902351)
  • optimization: the compiler is smarter about representation selection for floating point constants used in full calls.
  • optimization: the compiler no longer refuses to coerce large fixnums to single floats inline, except on x86 where this limitation is still necessary.
  • bug fix: deadlock detection could report the same deadlock twice, for two different threads. Now a single deadlock is reported exactly once.
  • bug fix: interval-arithmetic division during type derivation did not account for signed zeros.
  • bug fix: compiler error when typechecking a call to a function with non-constant keyword arguments.
  • bug fix: misoptimization of TRUNCATE causing erratic behaviour.
  • bug fix: condition slot accessors no longer cause undefined function style-warnings when used in the :REPORT clause of the DEFINE-CONDITION form that defines them. (#896379)
  • bug fix: DEFGENERIC warns about unsupported declarations, as specified by ANSI. (#894202)
  • bug fix: SUBTYPEP tests involving forward-referenced classes no longer bogusly report NIL, T.
  • bug fix: bogus style-warnings for DEFMETHOD forms that both declared some required arguments ignored and performed assignments to others. (#898331)
  • bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
  • bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
  • bug fix: redefining a function whose previous definition contained an unknown type no longer causes a style-warning. (#806243)
  • bug fix: undefined functions now appear in backtraces as ("undefined function") instead of ("bogus stack frame") on non-x86oids.
  • bug fix: backtraces are no longer cut off at ("undefined function") when called under certain circumstances (involving a caller-allocated stack frame) on PPC.
  • bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows systems. (regression since 1.0.53)
  • bug fix: GC deadlocks from dladdr() on certain platforms.
  • bug fix: broken standard streams no longer automatically cause recursive errors on debugger entry.
  • bug fix: build ignored --dynamic-space-size= argument to make.sh (regression since 1.0.53)
  • bug fix: attempts to stack allocate a required argument to a function with an external entry point caused compiler-errors.
  • bug fix: compiler notes for failed stack allocation for a function argument no longer claim to be unable to stack allocate the function.
  • bug fix: COERCE now signals a type-error on several coercions to subtypes of CHARACTER that are forbidden according to ANSI. (#841312)
  • bug fix: missing failure-to-stack-allocate compiler notes for some forms of MAKE-ARRAY with dynamic-extent. (#902351)
  • bug fix: some of the compile-time side-effects of DEFCLASS were not caught by package locks.

New in Steel Bank Common Lisp 1.0.54 (Dec 5, 2011)

  • minor incompatible changes:
  • RENAME-FILE on a symbolic links used to rename the linked-to file instead of the link.
  • DELETE-DIRECTORY on symbolic link to a directory used to delete the directory, but now signal an error instead. Use TRUENAME to resolve the pathname if you wish to delete the linked directory, and DELETE-FILE if you wish to delete the
  • The internal SB-THREAD::SPINLOCK API has been deprecated, and using symbols associated with it will trigger a compile-time warning.
  • thread-related enhancements: (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign. Many thanks to generous donors!)
  • Threading is now more reliable on non-Linux platforms. We still don't consider threads on non-Linux platforms good enough to enable them by default, but they're in a clearly better shape now.
  • Deadlines supported now on all platforms.
  • All blocking functions in the threading API now have a :TIMEOUT argument.
  • Semaphore notification objects have been added to SB-THREAD.
  • SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
  • SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE, STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
  • Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP using an API anologous to defining new SETFable places.
  • GC-related enhancements and bug fixes:
  • --dynamic-space-size and --control-stack-size now understand Kb, Mb, and Gb suffixes. Default is megabytes as before.
  • on GENCGC targets, the default dynamic space size is now 512Mb for 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only exception, defaulting to mere 444Mb to fit under default ulimits.) The new defaults are in place to prevent hitting swap on low-end systems. Use build-time option --dynamic-space-size to build an SBCL with another default, or the runtime option to adjust the size at startup: a good size is at most equal to the amount of physical memory the system has.
  • on GENCGC targets, nursery and generation sizes now default to 5% of dynamic-space size.
  • on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically refuses to create SIMPLE-FUN objects.
  • on 64-bit GENCGC targets, setting the nursery size above 4Gb now works. (#870868)
  • on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same validation of pointer objects as GENCGC does, instead of a comparatively weak bounds-check against the heap spaces.
  • SB-BSD-SOCKETS bug fixes:
  • GET-PROTOCOL-BY-NAME had a significant memory leak.
  • GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on systems with getaddrinfo().
  • GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt safe outside systems with getaddrinfo().
  • enhancement: ASDF has been updated 2.019.
  • enhancement: special-case TCO prevention for functions which never return extended to untrusted types, keeping one more frame's worth of debug information around in many cases.
  • enhancement: debug-names of anonymous and local function are more descriptive. Affects backtraces and SB-SPROF results. (#805100)
  • enhancement: on win32, ABS of complex floats guards better against overflows. (#888410)
  • enhancement: RUN-PROGRAM now distinguishes exec() failing from child process exiting with code 1. (#676987)
  • enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing the system where on the filesystem the SBCL sources themselves are located. (Thanks to Zach Beane)
  • enhancement: the compiler is now able to derive tighter bounds for floating point numbers in some cases. (Thanks to Lutz Euler, #894498)
  • bug fix: on 64-bit targets, atomic-incf/aref does index computation correctly, even on wide-fixnum builds. (#887220)
  • bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that resolved to directories.
  • bug fix: type mismatch when assigning to lexical variables no longer result in fasl-dumping internal type objects. (#890750)
  • bug fix: type mismatch on (SETF AREF) and function return values no longer result in fasl-dumping internal type objects.
  • bug fix: With several combinations of argument types, for example (EXPT ), EXPT now uses double-precision throughout instead of partially calculating only to single-precision. (#741564; thanks to Lutz Euler)
  • bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus objects when interrupted by GC on PPC.

New in Steel Bank Common Lisp 1.0.52 (Oct 10, 2011)

  • enhancement: ASDF has been updated to version 2.017.
  • enhancement: the --core command line option now accepts binaries with an embedded core.
  • enhancement: when built with :sb-core-compression, core files (regular or executable) can be compressed with zlib. Use the :COMPRESSION argument to SAVE-LISP-AND-DIE to specify a compression level.
  • enhancement: --[no-]merge-core-pages determines whether the runtime hints the operating system that identical core pages between SBCL processes should share the same physical memory. Default is to only enable this for compressed cores.
  • optimization: SLEEP no longer conses.
  • optimization: *PRINT-PRETTY* no longer slows down printing of strings or bit-vectors when using the standard pretty-print dispatch table.
  • bug fix: non-function FTYPE declarations no longer cause a compiler-error. (#738464)
  • bug fix: compiler-errors causes by MEMBER types in conjunction with with AREF, CHAR, etc. (#826971)
  • bug fix: compiler-errors causes by integer arguments with composed of multiple ranges to ARRAY-IN-BOUNDS-P. (#826970)
  • bug fix: ,@ and ,. now signal a read-time error for certain non-list expressions. (#770184)
  • bug fix: complex single float literals are correctly aligned when used as arguments of arithmetic operators.
  • bug fix: on 32-bit platforms, rounding of double floats larger than a fixnum is correct. (reported by Peter Keller)
  • bug fix: stray FD-HANDLERs are no longer left lying around after unwinds from RUN-PROGRAM. (#840190, reported by Dominic Pearson; fix from Max Mikhanosha)
  • bug fix: redefining classes such that slots with custom allocation are added or removed works again.

New in Steel Bank Common Lisp 1.0.48 (May 11, 2011)

  • incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five years, is now no longer supported.
  • enhancement: read() and write() have been added to SB-POSIX.
  • enhancement: types of DEFSTRUCT constructors are proclaimed more accurately, allowing better typechecking of call-sites.
  • enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN) are no longer caught. (reverted to pre 1.0.34 behaviour)
  • optimization: slightly faster ISQRT. (#713343)
  • bug fix: better support for Solaris /bin/sh in sh-based tests.
  • bug fix: TRACE behaves better when attempting to trace undefined functions. (#740717)
  • bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison to (FUNCALL #'(LAMBDA ...) ...).
  • bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in a compile-time error. (#720382)
  • bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled without complaints.
  • bug fix: less verbose source forms for functions from EVAL. (#747485)
  • bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE optimization. (regression from 1.0.45.18/1.0.46.15)
  • bug fix: package locks did not protects against compile-time side-effects of DEFUN. (#675584)
  • bug fix: --dynamic-space-size argument is validated more carefully. (#721457)
  • bug fix: memory fault from printing a malformed simple-condition. (#705690)
  • bug fix: redefining classes so that slot-definition classes change now engages the obsolete instance protocol. (#766271)
  • bug fix: constant improper lists could break source coverage recording. (#767959)
  • bug fix: compiling calls to eg. MEMBER with massive constant list arguments could exhaust stack.