X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=NEWS;h=729dd09cd3e234e4a97e52ddbe7fa5ce5a6c7ced;hb=61c18727668ff0c3263a3d363e609d4522d545cc;hp=b4e3018cffd134edb0f09b34be1c8b52a842b2f6;hpb=e511ed14d4a20cb9de2523f052b0f23a1dde1115;p=sbcl.git diff --git a/NEWS b/NEWS index b4e3018..729dd09 100644 --- a/NEWS +++ b/NEWS @@ -1778,14 +1778,26 @@ changes in sbcl-0.8.1 relative to sbcl-0.8.0: were silently accepted). * minor incompatible change: COMPILE-FILE now uses the freedom afforded (ANSI 3.2.2.3) to use derived function types for - functions defined in the same file. This also permits the system - to warn on static type mismatches and function redefinition. - * changes in type checking closed the following bugs: + functions defined in the same file. This also permits the system + to warn on static type mismatches and function + redefinition. (Currently it does not work with high DEBUG level.) + * minor incompatible change: VALUES declaration is disabled. + * When issuing notes, the compiler now signals a condition of type + SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING + restart for use in user handlers. It is expected that the + COMPILER-NOTE condition will eventually become a condition + supertype to a hierarchy of note types, which will then be + handleable in a similar fashion. However, at the moment, no such + note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists, + but it's an implementation detail, not a classification for the + purpose above.) + * Changes in type checking closed the following bugs: ** type checking of unused values (192b, 194d, 203); ** template selection based on unsafe type assertions (192c, 236); ** type checking in branches (194bc). - * VALUES declaration is disabled. - * a short form of VALUES type specifier has ANSI meaning. + * A short form of VALUES type specifier has ANSI meaning (it has + increased the number of situations when SBCL cannot perform type + checking). * fixed bug in DEFSTRUCT: once again, naming structure slots with keywords or constants is permissible. * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods @@ -1795,47 +1807,322 @@ changes in sbcl-0.8.1 relative to sbcl-0.8.0: outputs FRESH-LINE or TERPRI, and no longer converts its stream argument to a pretty-print stream. Instead, it leaves any such operations to DESCRIBE-OBJECT methods. - * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported + * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported by Teemu Kalvas) * bug fix: NIL is now a valid destructuring argument in DEFMACRO - lambda lists. (thanks to David Lichteblau) - * bug fix: defining a generic function with a :METHOD-CLASS being a + lambda lists. (thanks to David Lichteblau) + * bug fix: Defining a generic function with a :METHOD-CLASS being a subclass of STANDARD-METHOD no longer causes stack exhaustion. (thanks to Gerd Moellmann) - * increased compilation speed of long MULTIPLE-VALUES-BIND. + * fixed bug 246: increased compilation speed of long + MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant + integer argument) * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL has been included. * DEFCONSTANT now throws a condition of type SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a constant to a non-EQL value; CONTINUE and ABORT restarts - respectively change and preserve the value. - * fixed bug 63: the code walker, part of the implementation of CLOS, - is better at handling symbol macros. - * bug fix: there is no longer a type named LENGTH. (reported by - Raymond Toy) + respectively change and preserve the value. + * fixed bug 63: The code walker, part of the implementation of CLOS, + is now better at handling symbol macros. + * bug fix: There is no longer an internal implementation type named + CL:LENGTH. (reported by Raymond Toy) + * bug fix: In macro-like defining macros/special operators the + implicit block does not enclose the lambda list. + * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not + enclosed in parentheses) are not suitable as type specifiers, and + their use properly signals an error now. + * bug fix: An argument count mismatch for a type specifier in code + being compiled no longer causes an unhandled error at compile + time, but signals a compile-time warning. + * fixed simple vector readable printing + * bug fix: DESCRIBE takes more care over whether the class + precedence list slot of a class is bound before accessing it. + (reported by Markus Krummenacker) + * bug fix: FORMATTER can successfully compile pretty-printer format + strings which use variants of the ~* directive inside. + * bug fix: SEARCH now applies its TEST predicate to the elements of + the arguments in the correct order. (thanks to Wolfhard Buss) + * fixed bug 235b: The compiler uses return types of MAPCAR and friends + in type inference. (thanks to Robert E. Brown) + * bug fix: Reading in symbols with an explicit package name of "" + (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef) * fixed some bugs revealed by Paul Dietz' test suite: ** NIL is now allowed as a structure slot name. - ** arbitrary numbers, not just reals, are allowed in certain + ** Arbitrary numbers, not just REALs, are allowed in certain circumstances in LOOP for-as-arithmetic clauses. - ** multiple class redefinitions before slot access no longer + ** Multiple class redefinitions before slot access no longer causes a type error. ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the association between the name and a class. - ** generic functions with non-standard method-combination and over - six methods all of which return constants no longer return NIL - after the first few invocations. (thanks to Gerd Moellmann) + ** Generic functions with non-standard method-combination and over + five methods all of which return constants no longer return NIL + after the first few invocations. (thanks to Gerd Moellmann) ** CALL-NEXT-METHOD with no arguments now passes the original values of the arguments, even in the presence of assignment. - ** functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any + ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any object. ** DISASSEMBLE works with closures and funcallable instances. - ** ADD-METHOD now returns the generic function, not the new - method. + ** ADD-METHOD now returns the generic function, not the new method. ** FIND-METHOD signals an error if the lengths of the specializers is incompatible with the generic function, even if the ERRORP argument is true. ** TYPE-OF returns recognizeable subtypes of all built-in-types of which its argument is a member. + ** DEFCLASS only redefines the class named by its class-name + argument if that name is the proper name of the class; + otherwise, it creates a new class. + ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot + of the UNBOUND-SLOT condition to the name of the slot. + ** (SETF (AREF bv 0) ...) did not work for bit vectors. + ** SLOT-UNBOUND and SLOT-MISSING now have their return values + treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and + SLOT-MAKUNBOUND in the specified fashion. + +changes in sbcl-0.8.2 relative to sbcl-0.8.1: + * fixed bug 148: failure to inline-expand a local function left + garbage, confusing the compiler. + * fixed bugs 3cd: structure slot readers perform type check if the + slot can have an invalid value (i.e. it is either not initialized + or can be written with a less specific slot writer). + * bug fix: the compiler now traps array references to elements off + the end of an array; previously, the bounds checking in some + circumstances could go off-by-one. + * improved MACHINE-VERSION, especially on Linux (thanks to Lars + Brinkhoff) + * type declarations for array element types now obey the description + on the CLHS page "Declaration TYPE", as per discussions on + sbcl-help around 2003-05-08. This means that a declaration + (TYPE (ARRAY FOO) BAR) means that, within the scope of the + declaration, all references to BAR will be asserted or assumed + (with THE, so dependent on compiler policy) to involve objects of + type FOO. Note that no such declaration is implied in + (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO). + * declared types of functions from the "Conditions" + chapter. (reported by Paul Dietz) + * bug fix: CERROR accepts a function as its first argument. + * bug fix: NTH an NTHCDR accept a bignum as index + arguments. (reported by Adam Warner) + * optimization: character compare routines now optimize comparing + against a constant character. (reported by Gilbert Baumann) + * bug fix: (SETF AREF) on byte-sized-element arrays with constant index + argument now works properly on the MIPS platform. + * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))). + * repeated evaluation of the same DEFSTRUCT, a slot of which is + declared to have a functional type, does not cause an error + anymore. + * fixed bug: sometimes MAKE-INSTANCE did not work with classes with + many :DEFAULT-INITARGS. (reported by Istvan Marko) + * fixed bug: if last continuation of a deleted block has a + destination, this destination should be deleted too. (reported by + ohler on #lisp) + * fixed a bug in the bootstrap process: the host compiler's values + of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak + into the newly-built SBCL. (reported by Eric Marsden on #lisp, + test case from Patrik Nordebo) + * improved the ability of the disassembler on the PPC platform to + provide helpful disassembly notes. + * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of + the class in more cases than previously. + * bug fix: FILE-POSITION now understands :START and :END for + STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola) + * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE + 8) data. (thanks to David Lichteblau) + * bug fix: it is possible to add a method to a generic function + without lambda list. + * bug fix: reader failed to signal END-OF-FILE inside an + object representation. (reported by Nikodemus Siivola) + * fixed some bugs revealed by Paul Dietz' test suite: + ** LAST and [N]BUTLAST should accept a bignum. + ** condition slot accessors are methods. + ** (VECTOR NIL) is a subtype of STRING. + +changes in sbcl-0.8.3 relative to sbcl-0.8.2: + * SBCL now builds and runs on MacOS X (version 10.2), or perhaps + more accurately, on the Darwin kernel running on PowerPC hardware. + (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo) + * Compiler code deletion notes now signal a condition of type + SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with + an associated MUFFLE-WARNING restart. + * The compiler now performs limited argument count validation of + constant format strings in FORMAT, and where appropriate in ERROR, + CERROR and WARN. (thanks to Gerd Moellmann) + * New ASDF-INSTALL contrib can be used for automatic download and + installation of third-party Lisp code from CCLAN or other sites + via CLiki. + * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD, + which forces another thread to execute a function supplied by the + caller. + * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM) + now accept and act upon their :ELEMENT-TYPE keyword argument. + (reported by Martin Atzmueller, Edi Weitz) + * bug fix: FILE-POSITION now accepts position designators up to + ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever + is the greater. (thanks to Patrik Nordebo) + * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by + Kalle Olavi Niemitalo) + * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now + printable. (reported by Eric Marsden) + * bug fix in sb-posix: mmap() now works on systems with a 64-bit + off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs) + * x86 bug fix in control stack exhaustion checking: now shows backtrace + * bug fix in WITH-TIMEOUT: now the body can have more than one form. + (thanks to Stig Sandoe) + * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or + UNREAD-CHAR now correctly includes the unread character in the + target sequence. (thanks to Gerd Moellmann) + * bug fix in threaded builds: the system can now be suspended and + resumed by shell job control with minimal disruption. + * bug fixes in times and timezones >2038AD + * better handling of "where is GNU make?" problem in build scripts + (thanks to Nikodemus Siivola) + * new optimization: inside a named function any reference to a + function with the same name is considered to be a self-reference; + this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS + optimization quality. + * new optimization on x86: logical functions and + now have + optimized (UNSIGNED-BYTE 32) versions, which are automatically + used when the result is truncated to 32 bits. + * VALUES declaration is partially enabled. + * fixes in SB-GROVEL (thanks to Andreas Fuchs) + * fixed some bugs revealed by Paul Dietz' test suite: + ** The system now obeys the constraint imposed by + UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element + types form a lattice under type intersection. + ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers. + ** ASSOC now ignores NIL elements in an alist. + ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM + and (1+ MOST-POSITIVE-FIXNUM) answers. + ** The addition of a method with invalid qualifiers to a generic + function does not cause an error to be signalled immediately; + a warning is signalled, and the error is generated only on + calling the generic function. + * changed .fasl file version number, in part to add type codes for + new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by + obscure ANSI requirements + +changes in sbcl-0.8.4 relative to sbcl-0.8.3: + * incompatible change: The --disable-debugger command line + option now clobbers the debugger at a more fundamental + level, by redefining #'INVOKE-DEBUGGER instead of by + rebinding *DEBUGGER-HOOK*. The main difference is that BREAK + is specified by ANSI to ignore *DEBUGGER-HOOK* and + INVOKE-DEBUGGER regardless. Under the old system, BREAK would + enter the debugger REPL and then suffer recursive errors + because *DEBUG-IO* is also messed up in --disable-debugger mode; + while under the new system, BREAK in --disable-debugger mode + terminates the system just as an unhandled error would. + * fixed compiler performance when processing loops with a step >1; + * bug fix: DOCUMENTATION now retrieves generic function + documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION) + support has been systematized, and now supports the methods + specified by ANSI, along with a default method and a method for + slot documentation. (reported by Nathan Froyd) + * bug fix: effective methods associated with a generic function are + no longer cached over a change of that generic function's method + combination. (reported by Andreas Fuchs) + * bug fix: RUN-PROGRAM now does not fail if some element in $PATH + names a non-existent directory. (thanks to Andreas Fuchs) + * bug fix: ROUND and TRUNCATE could, under certain circumstances on + the PPC platform, lead to stack corruption; this has been fixed. + (reported by Rainer Joswig) + * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower + no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff) + * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum + arithmetic in general, is now much more reliable on the PPC + platform. + * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha + platform now returns the right answer. + * optimization: restored some effective method precomputation in + CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of + precomputation is now tunable. + * optimization: compiler-internal data structure use has been + reviewed, and changes have been made that should improve the + performance of the compiler by about 20%. + * optimization: performance of FILL (and :INITIAL-ELEMENT) on + simple-base-strings and simple-bit-vectors is improved. + * optimization: the optimization of 32-bit logical and arithmetic + functions introduced in version 0.8.3 on the x86 has been + implemented on the mips, ppc and sparc platforms; an + implementation of the same facility, but for 64-bit arithmetic, + has been added for the alpha. + * microoptimization: the compiler is better able to make use of the + x86 LEA instruction for multiplication by constants. + * bug fix: in some situations compiler did not report usage of + generic arithmetic in (SPEED 3) policy. + * bug 145b fix: compiler used wrong type specifier while converting + MEMBER-types to numeric. + * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug + McNaught) + * bug fix: (SETF AREF) on byte-sized-element arrays with constant + index argument now works properly on the Alpha platform. + * bug fix: floating point exception treatment on the Alpha platform + is improved. + * bug fix: FILE-POSITION works much better on string input and + output streams. (thanks to Nikodemus Siivola) + * bug fix: many threading/garbage collection symptoms sorted. + SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that + might be pseudo-atomic. + * internal change: Stopping for GC is now done with signals not + ptrace. GC is now done in whichever thread wanted it, instead of + in the parent. + * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers + work again. + * bug fix: result form in DO is not contained in the implicit + TAGBODY. + * incompatible change: ICR structure is changed; the value part of + CONTINUATION is now called LVAR; corresponding functions are + renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE). + * added type deriver for ISQRT (thanks to Robert E. Brown). + * bug fix: better support for loading from the command line when an + initialization file sets (READTABLE-CASE *READTABLE*). (thanks + to Adam Warner) + * fixed some bugs revealed by Paul Dietz' test suite: + ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...). + ** ROUND and FROUND now give the right answer when given very + small float arguments. + ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all + circumstances. + ** optimizer for (EXPT X 0) did not work for X not of type FLOAT. + ** (GCD 0 ) returned . + ** LCM should return a non-negative integer. + ** PARSE-INTEGER returned the index of a terminator instead of the + upper bounding index of a substring in case :JUNK-ALLOWED NIL. + ** PARSE-INTEGER returned an incorrect index being applied to a + displaced string. + ** LCM with two arguments of 0 returns 0 rather than signalling + DIVISION-BY-ZERO. + ** unsigned addition of a 32-bit constant with the high bit set no + longer causes an internal compiler error on the x86. + ** LOGBITP accepts a non-negative bignum as its INDEX argument. + ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD + with negative last argument. + ** byte specifiers with zero size and position no longer cause + an error during type derivation. + ** bignum multiplication on the Alpha platform now returns the + right answer. + * porting: The system now builds on SuSE AMD64, although it still + generates a 32-bit binary. + * .fasl file incompatibility: The fasl file version number has + been incremented (because of the changes to internal compiler + data structures referred to above). + +changes in sbcl-0.8.5 relative to sbcl-0.8.4: + * in full calls compiler does not generate checks for declared + argument types for all arguments. + * fix bug 282: compiler does not trust type assertions while passing + arguments to a full call. + * fix bug 261: compiler allows NIL or "no value" to be accepted for + &OPTIONAL VALUES type parameter. + * fix bug 214: algorithm for noting rejected templates is now more + similar to that of template seletion. (also reported by rydis on + #lisp) + * fixed some bugs revealed by Paul Dietz' test suite: + ** incorrect optimization of TRUNCATE for a positive first + argument and negative second. + ** compiler failure in let-convertion during flushing dead code. + ** compiler failure while deriving type of TRUNCATE on an + interval, containing 0. planned incompatible changes in 0.8.x: * (not done yet, but planned:) When the profiling interface settles