+changes relative to sbcl-1.0.57:
+ * enhancement: implicit generic function warnings now specify the package
+ in which the new generic function is being created.
+ * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
+ updates of CAS-able places (similar to Clojure's swap!).
+ * enhancement: run-program no longer decodes and re-encodes environment when
+ :environment argument is not provided. (lp#985904)
+ * enhancement: errors during compiler-macro expansion no longer cause
+ runtime errors, only a compile-time warning, otherwise behaving as if
+ the compiler macro had declined to expand.
+ * optimization: On x86-64, code alignment of block headers is done with
+ multi-byte NOPs now instead of repetitions of the single-byte NOP.
+ * optimization: MAP-INTO is substantially faster when the target sequence is
+ of unknown type; mapping into lists is no longer O(N^2). (thanks to James
+ M. Lawrence)
+ * optimization: the compiler no longer heap-conses to check exits in cases
+ where the exit function is dynamic extent, or when it can prove the exit
+ function cannot escape.
+ * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
+ element type, and vectors that aren't SIMPLE-ARRAYs.
+ * bug fix: On SPARC, a limitation on the number of code constants emittable
+ by the compiler has been lifted, allowing certain long functions to
+ compiled and assembled which had previously been unsupported; fixes
+ cl-bench on this ISA (lp#1008996).
+ * bug fix: potential for infinite recursion during compilation of CLOS slot
+ typechecks when dependency graph had loops. (lp#1001799)
+ * bug fix: error forms reported with some program-errors were not escaped
+ properly.
+ * bug fix: functions from EVAL are now on more equal footing with functions
+ from COMPILE. (lp#1000783, lp#851170, lp#922408)
+ * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
+ objects as its :METHOD-COMBINATION argument, not just lists designating
+ method combinations. (lp#936513)
+ * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
+ files. (lp#968837).
+ * bug fix: restore build on solaris/sparc. (lp#1008506)
+ * bug fix: an issue with LDB in the PowerPC backend has been resolved;
+ this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
+ * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
+ as keyword arguments no longer accidentally match unevaluated symbols
+ against them.
+
+changes in sbcl-1.0.57 relative to sbcl-1.0.56:
+ * RANDOM enhancements and bug fixes:
+ ** bug fix: the range and distribution of random integers could be
+ catastrophically wrong when the compiler derived the type of its
+ argument as a disjoint set of small integers.
+ ** bug fix: the distribution of random integers is now completely
+ uniform even when the specified limit is not a power of two.
+ (Previously some values could be about 0.1 % more probable than
+ others in the worst case.) (lp#309467)
+ ** RANDOM on large integer arguments is generally faster and conses
+ less than before; this is visible for fixnums above a length of
+ about 24 bits, but extremely so for bignums: the old implementation
+ used time and space quadratical in the size of the argument there,
+ the new one is linear.
+ * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
+ main entry point, SB-EXT:QUIT is deprecated.
+ * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
+ ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
+ * enhancement: FASL loading no longer grabs the world-lock.
+ * enhancement: GENCGC reclaims space more aggressively when objects being
+ allocated are a large fraction of the total available heap space.
+ (lp#936304)
+ * enhancement: backtraces show the correct number of arguments for frames
+ called with too many arguments.
+ * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
+ SB-POSIX.
+ * enhancement: ASDF has been updated 2.21.
+ * optimization: fewer uses of full calls to signed modular functions.
+ (lp#903821)
+ * optimization: typechecking alien values is typically 5 x faster.
+ * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
+ are 20% faster.
+ * bug fix: file compilation performance issues when dumping subtypes
+ of CHARACTER (lp#994487)
+ * bug fix: fixed disassembly of some SSE instructions on x86-64.
+ * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
+ OPEN. (lp#969352, thanks to Kambiz Darabi)
+ * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
+ (lp#959687)
+ * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
+ classoid even if X was not the proper name of the class. (lp#941102)
+ * bug fix: declaration leakage between lexical environments due to careless
+ use of NCONC in MAKE-LEXENV. (lp#924276)
+ * bug fix: ENSURE-DIRECTORIES-EXIST now works when
+ *default-pathname-defaults* contains NAME or TYPE components.
+ * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
+ from CL package, e.g. (loop . 10).
+ * bug fix: run-program with existent or non-existent files for :output or
+ :input when :if-output-exists or :if-input-does-not-exist are NIL properly
+ returns NIL instead of signalling an obscure error.
+ * bug fix: fix miscompilation of some logand forms with large constant
+ arguments. (lp#974406)
+ * bug fix: account for funcallable-instance objects properly in ROOM.
+ * bug fix: incorrect octets reported for c-string decoding errors.
+ (lp#985505)
+ * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
+ O'Neel)
+ * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
+ * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
+ allowing faster release of memory back to the OS. (lp#991293)
+ * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
+ existing deadline for the dynamic scope of its body.
+ * bug fix: compiler-internal interval arithmetic needed to be more
+ conservative about open intervals when operated on by monotonic but not
+ strictly-monotonic functions. (lp#975528)
+ * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
+ it's also slightly faster. (lp#998926)
+ * bug fix: better error messages for malformed declarations.
+ (lp#1000239)
+ * bug fix: define-condition didn't return the name of the defined condition.
+ * documentation:
+ ** improved docstrings: REPLACE (lp#965592)
+
+changes in sbcl-1.0.56 relative to sbcl-1.0.55:
+ * bug fix: fix copy-structure. When copying from stack to heap, garbage
+ could end up in the heap making GC unhappy.
+ (Thanks to James Knight, lp#911027)
+ * enhancements
+ ** SBCL can now be built using Clang.
+ ** ASDF has been updated 2.20.
+ * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
+ * bug fix: don't complain about a too-hairy lexical environment for inlining
+ when the function has never been requested for inlining. (lp#963530)
+
+changes in sbcl-1.0.55 relative to sbcl-1.0.54:
+ * enhancements to building SBCL using make.sh:
+ ** --fancy can be specified to enable all supported feature enhancements.
+ ** --with-<feature> and --without-<feature> 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 <pkgname>::<form-in-package>
+ 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. (lp#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, lp#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. (lp#902537)
+ * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
+ be stack-allocated. (lp#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.
+ * optimization: truncation operations on integers with constant divisor
+ arguments 1 and -1 are optimized away.
+ * 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. (lp#896379)
+ * bug fix: DEFGENERIC warns about unsupported declarations, as specified
+ by ANSI. (lp#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.
+ (lp#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. (lp#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=<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. (lp#841312)
+ * bug fix: missing failure-to-stack-allocate compiler notes for some
+ forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
+ * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
+ by package locks.
+ * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
+
+changes in sbcl-1.0.54 relative to sbcl-1.0.53:
+ * 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.
+ (lp#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. (lp#805100)
+ * enhancement: on win32, ABS of complex floats guards better against
+ overflows. (lp#888410)
+ * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
+ process exiting with code 1. (lp#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, lp#894498)
+ * bug fix: on 64-bit targets, atomic-incf/aref does index computation
+ correctly, even on wide-fixnum builds. (lp#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. (lp#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
+ <integer> <(complex double)>), EXPT now uses double-precision throughout
+ instead of partially calculating only to single-precision. (lp#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.
+
+changes in sbcl-1.0.53 relative to sbcl-1.0.52:
+ * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
+ the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
+ (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
+ * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
+ * minor(?) incompatible(?) change: The default fixnum width on 64-bit
+ targets is now 63 bits (up from 61).
+ * enhancement: DESCRIBE now reports a lambda-list and source location
+ for complext setf-expanders.
+ * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
+ GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
+ of multiple-valued places to be set to NIL, instead of signalling an
+ error (per a careful reading of CLHS 5.1.2.3).
+ * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
+ * bug fix: repair crash in x86oid darwin signal handling emulation
+ when built with certain compilers.
+ * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
+ rotation arguments on x86-64. (lp#882151)
+ * bug fix: low-level control flow optimisations could result in bogus
+ code in functions with tail and non-tail calls to local functions on
+ x86oids. (lp#883500)
+ * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
+ to emit literal characters > (code-char 4095), for comparisons with
+ constant characters.
+ * bug fix: ROOM reported only the low 32 bits of dynamic space usage
+ on 64 bit platforms. (lp#881445)
+ * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
+ delete the wrong file when using relative pathnames. (lp#882877)
+ * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
+ sequences and :KEY NIL.
+
+changes in sbcl-1.0.52 relative to sbcl-1.0.51:
+ * 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.
+ (lp#738464)
+ * bug fix: compiler-errors causes by MEMBER types in conjunction with with
+ AREF, CHAR, etc. (lp#826971)
+ * bug fix: compiler-errors causes by integer arguments with composed of
+ multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
+ * bug fix: ,@ and ,. now signal a read-time error for certain non-list
+ expressions. (lp#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. (lp#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.
+
+changes in sbcl-1.0.51 relative to sbcl-1.0.50:
+ * minor incompatible change: SB-BSD-SOCKET socket streams no longer
+ participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
+ MAKE-SOCKET-STREAM if using SERVE-EVENT.
+ * enhancement: added support for socket keepalive timeout intervals
+ and probe counts on Linux.
+ * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
+ chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
+ * enhancement: added new toplevel options --quit and --non-interactive
+ (lp#822712).
+ * enhancement: the Windows port of SBCL now builds and runs on Wine
+ (thanks to Anton Kovalenko).
+ * enhancement: more, and more correct, SSE instruction definitions on
+ x86-64 (thanks to Alexander Gavrilov).
+ * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
+ to help the processor execute spin loops, when applicable. Currently
+ implemented for x86 and x86-64.
+ * optimization: unsigned integer divisions by a constant are implemented
+ using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
+ * optimization: improved type-derivation for LOAD-TIME-VALUE.
+ * bug fix: correct RIP offset calculation in SSE comparison and shuffle
+ instructions. (lp#814688)
+ * bug fix: COERCE to unfinalized extended sequence classes now works.
+ (reported by Jan Moringen; lp#815155)
+ * bug fix: a compiler error during typecheck generation, reported by Eric
+ Marsden. (lp#816564)
+ * bug fix: obsolete instance protocol fires when shared slots are added
+ or removed.
+ * bug fix: fixed-format floating point printing with scaling factors.
+ (lp#811386)
+ * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
+ backtraces. (lp#818460)
+ * bug fix: better backtraces for interrupted syscall frames on x86.
+ (lp#549673)
+ * bug fix: SSE comparison instructions can be disassembled even when one
+ operand is in memory. (lp#814702)
+ * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
+ * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
+ type information associated with the VALUES form.
+ * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
+ forms. (lp#823014)
+ * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
+ first write (lp#561642).
+ * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
+ * bug fix: bound propagation involving conversion of large bignums to
+ floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
+ (lp#819269)
+ * bug fix: &REST to &MORE conversion still works in unsafe call to known
+ functions; reported by Lutz Euler (lp#826459).
+ * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
+ since 1.0.48)
+
+changes in sbcl-1.0.50 relative to sbcl-1.0.49:
+ * enhancement: errors from FD handlers now provide a restart to remove
+ the offending handler.
+ * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
+ copiers as well.
+ * enhancement: location of user or system initialization file can now easily
+ be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
+ and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
+ * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
+ the thunk, as a keyword argument, :arguments.
+ * enhancement: constraint propagation is simplified (and sped up) when
+ COMPILATION-SPEED > SPEED.
+ * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
+ * enhancement: debugger understands &MORE arguments better.
+ * optimization: extracting bits of a single-float on x86-64 has been
+ optimized. (lp#555201)
+ * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
+ when (> SPEED SPACE).
+ * optimization: local call trampolines (x86 and x86-64) are emitted
+ inline.
+ * optimization: implicit value cells for dynamic-extent closed-over bindings
+ on x86 and x86-64 can hold unboxed values as well.
+ * meta-optimization: improved compilation speed, especially for large
+ functions. (lp#792363 and lp#394206)
+ * bug fix: bound derivation for floating point operations is now more
+ careful about rounding possibly closing open bounds. (lp#793771)
+ * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
+ backwards incompatible change in 1.0.48.27)
+ * bug fix: occasional debugger errors in when a type-error occured in a
+ function with dynamic-extent &rest list.
+ * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
+ boa-construtors can be used to initialized structure slots.
+ * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
+ (lp#795705, regression)
+ * bug fix: DIRECTORY works better on logical pathnames.
+ * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
+ are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
+ * bug fix: the compiler no longer constant-folds NaNs in
+ MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
+ * bug fix: FORMAT now handles floating point rounding correct, eg.
+ (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
+ (lp#308961)
+ * bug fix: style warning during lambda-list introspection of generic
+ functions with both optional and key argments.
+ * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
+ folding. (lp#729765)
+ * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
+ infinite loops.
+
+changes in sbcl-1.0.49 relative to sbcl-1.0.48:
+ * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
+ interrupts for its body.
+ * enhancement: source locations are now available for files loaded as
+ source, compile-time-too evaluation, and initialization files.
+ * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
+ virtual source-file information, eg. overriding input-file of COMPILE-FILE
+ when a temporary file is used for compilation.
+ * enhancement: ASDF has been updated to version 2.015.3.
+ * enhancement: backtraces involving frames from the default evaluator are
+ more readable.
+ * enhancement: RUN-PROGRAM works with user-defined binary input and output
+ streams.
+ * enhancement: more informative compile-time warnings and runtime errors for
+ type-errors detected at compile-time.
+ * enhancement: deadlock detection for mutexes and spinlocks.
+ * enhancement: dynamic-extent for &rest lists stack allocate only their
+ spines, not their argumets. While portable code should not rely on this,
+ particularly in combination with inlining, it should make dynamic-extent
+ easier to use safely.
+ * enhancement: SB-POSIX improvements:
+ ** WNOHANG and WUNTRACED are exported.
+ ** SYSCALL-ERROR now also provides the name of the failing system call.
+ * enhancement: --script improvements:
+ ** errors on standard input, output, and error streams are handled and
+ cause scripts to exit silently, making them easier to use in shell
+ pipelines.
+ ** backtraces from scripts now go to standard error instead of the
+ terminal even if one is available.
+ ** --script can be an argument, causing the script to be loaded from
+ standard input.
+ * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
+ strings to foreign memory.
+ * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
+ a file, making it easier to understand heap dynamics.
+ * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
+ allows the compiler to automatically elide rest-list allocation so long as
+ the call sites are in functions that the compiler knows cannot escape.
+ (lp#504575)
+ * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
+ especially in safe code when none of the required arguments have changed
+ their identities.
+ * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
+ uninterruptible, as well as blocking reads from socket streams created
+ with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
+ * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
+ from the to-char if the from-char is not a dispatch-macro character.
+ * bug fix: references to undefined variables in function calls that are
+ optimized away now signal a runtime error. (lp#722734)
+ * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
+ types from a function defined in the same file. (regression from
+ 1.0.43.57)
+ * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
+ (lp#771673)
+ * bug fix: spurious errors during QUIT when standard streams were closed.
+
+changes in sbcl-1.0.48 relative to sbcl-1.0.47:
+ * 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. (lp#713343)
+ * bug fix: better support for Solaris /bin/sh in sh-based tests.
+ * bug fix: TRACE behaves better when attempting to trace undefined
+ functions. (lp#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. (lp#720382)
+ * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
+ without complaints.
+ * bug fix: less verbose source forms for functions from EVAL. (lp#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. (lp#675584)
+ * bug fix: --dynamic-space-size argument is validated more carefully.
+ (lp#721457)
+ * bug fix: memory fault from printing a malformed simple-condition.
+ (lp#705690)
+ * bug fix: redefining classes so that slot-definition classes change now
+ engages the obsolete instance protocol. (lp#766271)
+ * bug fix: constant improper lists could break source coverage recording.
+ (lp#767959)
+ * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
+ could exhaust stack.
+
+changes in sbcl-1.0.47 relative to sbcl-1.0.46:
+ * bug fix: fix mach port rights leaks in mach exception handling code on
+ darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
+ initial patch)
+ * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
+ * enhancement: redefinition warnings for macros from different files. (lp#434657)
+ * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
+ * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
+ * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
+ processed using EVAL -- now the appropriate toplevel form is reported instead.
+ * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
+ declarations. (lp#726331)
+ * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
+ that NIL/NULL is excluded from the type.
+ * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
+ arbitrary objects.
+ * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
+ and its compatriots.
+ * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
+ * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
+ stack-allocated values out of their dynamic-extent. (lp#310175)
+ * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
+ x86-64 builds caused a type-error.
+ * bug fix: calling COMPILE with something else than a lambda-expression as the
+ second argument reports a more sensible error. (lp#718905)
+ * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
+ are detected. (lp#520607)
+ * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
+ into account.
+ * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
+ presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
+ methods. (regression from 1.0.45.18)
+ * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
+ CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
+ * bug fix: several foreign functions accepting string also accepted NIL and
+ consequently caused a memory fault at 0 now signal a type-error instead.
+ (lp#721087)
+ * bug fix: under rare circumstances, constraint propagation could rewrite a
+ variable reference to refer to a variable not in scope, causing an error
+ during physical environment analysis when attempting to close over the
+ variable. (lp#551227)
+ * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
+
+changes in sbcl-1.0.46 relative to sbcl-1.0.45:
+ * enhancement: largefile support on Solaris.
+ * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
+ arguments (lp#710017)
+ * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
+ distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
+ &co. (lp#718039)
+ * optimization: ERROR and CERROR are approximately 5 times faster.
+ * optimization: optimized constructors are used for MAKE-INSTANCE of classes
+ with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
+ SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
+ up instance creation in those cases.
+ * optimization: arithmetic operations with multiple constant arguments in now
+ have them reduced at compile-time. (lp#676414)
+ * optimization: determining current character position on string-streams for
+ pretty-printing was overly slow.
+ * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
+ lifetime analysis to overwrite closed-over variables (lp#681092).
+ * bug fix: encoding errors from some multibyte external formats such as EUC-JP
+ were not handled correctly (lp#713063).
+ * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
+ safe (lp#673630).
+ * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
+ mistake. (lp#667297).
+ * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
+ * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
+ * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
+ unintern the wrong symbol with the same name. (lp#693796)
+ * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
+ making it possible to restore the initial table if it has been messed up.
+ (lp#678409)
+
+changes in sbcl-1.0.45 relative to sbcl-1.0.44:
+ * enhancement: ~/ and ~user/ are treated specially in pathnames.
+ Refer to documentation for details.
+ * enhancement: ASDF has been updated to version 2.010.
+ * optimization: mutated closed-over variables that are only accessed by
+ DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
+ declared to be DYNAMIC-EXTENT) are stored directly in their containing
+ stack frame, rather than allocating a VALUE-CELL (lp#586103).
+ * optimization: UNWIND-PROTECT cleanup functions are now declared
+ DYNAMIC-EXTENT.