Tested by building (and hence building clisp) on NetBSD 9 amd64, and
running sbcl and evaluating (+ 1 2), following report by Chavdar
Ivanov.
Upstream NEWS (less bugfixes and minor improvements)
changes in sbcl-2.2.5 relative to sbcl-2.2.4:
* minor incompatible change: SB-EXT:*DERIVE-FUNCTION-TYPES* being NIL now
means that function calls will strictly only use type information from
proclaimed ftypes. The previous behavior (still the default) of using
derived type information from the same file is specified with :SAME-FILE.
(lp#1393302)
* minor incompatible change: RENAME-FILE now overwrites the target file on
Windows too, making its behaviour consistent with other platforms.
* minor incompatible change: inlining of local function is inhibited if
policy DEBUG = 3.
* platform support:
** single-stepping is now supported on 64-bit PowerPC platforms. (thanks
to Thomas Fitzsimmons)
** the :SB-LINKABLE-RUNTIME feature is now supported on 32-bit and 64-bit
PowerPC platforms. (thanks to Thomas Fitzsimmons)
* enhancement: debug source locations now work correctly for top level forms
with policy DEBUG = 1, as well as for block compiled files.
* enhancement: TRACE now supports tracing macro functions, compiler-macro
functions, individual methods and local functions. See the user manual for
more details. (lp#375314)
changes in sbcl-2.2.4 relative to sbcl-2.2.3:
* enhancement: better constraint propagation in the compiler. Specifically,
the compiler can now derive the type of X in control flow join situations
such as
(LAMBDA (X) (ECASE (1 ...) (2 ...)) X)
or
(LAMBDA (X) (ETYPECASE (INTEGER ...) (SYMBOL ...)) X)
instead of forgetting all information about X after the E(TYPE)CASE.
changes in sbcl-2.2.3 relative to sbcl-2.2.2:
* minor incompatible change: SB-THREAD:MUTEX-OWNER may return :THREAD-DEAD
if the apparent owner either exited nearly instantly after releasing the
mutex (and is not now the owner), or died and never released it.
* minor incompatible change: building the system with the simple semi-space
copying collector is no longer supported.
* minor incompatible change: support for PPC/Darwin has been removed.
* platform support:
** threads are now enabled by default on RISC-V.
** The generational garbage collector is now supported on MIPS.
changes in sbcl-2.2.2 relative to sbcl-2.2.1:
* platform support:
** all architectures now share the coverage mark instrumentation
implementation, meaning that performance now equals what had been
implemented only on x86 architectures.
* enhancement: improved handling of source locations for some classes
of compile time and runtime errors.
* enhancement: better source locations for structure accessors.
changes in sbcl-2.2.1 relative to sbcl-2.2.0:
* incompatible change: DEFINE-ALIEN-CALLBACK, which has never been exported
from a public package, has been deleted. It is superseded by
SB-ALIEN:DEFINE-ALIEN-CALLABLE.
* minor incompatible change: compiler warnings are emitted on more
provably-erroneous code involving sequence functions on specialized
arrays.
* platform support:
** support getting thread IDs on FreeBSD. (thanks to Felix Lange)
* enhancement: provide a restart for method lambda list mismatches that
fmakunbounds the generic function.
* enhancement: provide a USE-VALUE restart around type errors signalled from
(SETF SLOT-VALUE).
* enhancement: when UPDATE-INSTANCE-FOR-DIFFERENT-CLASS (or -REDEFINED-)
undergoes a non-local exit, restore the instance to its original state.
(thanks to Michał phoe Herda)
* enhancement: the :SYNCHRONIZED keyword argument to MAKE-HASH-TABLE is no
longer experimental.
changes in sbcl-2.2.0 relative to sbcl-2.1.11:
* platform support:
** support for FreeBSD on 64-bit arm platforms has been added.
** the :SB-LINKABLE-RUNTIME build-time feature is now supported on 32-bit
and 64-bit arm platforms, and on the FreeBSD operating system.
* enhancement: catch type mismatches for REPLACE, SUBSTITUTE, MAKE-ARRAY
with :INITIAL-CONTENTS.
New in version 2.1.10
* incompatible change: simd-pack without a specific element-type
is no longer treated as containing integers. A type must be
supplied for VOPs to work on such values.
* minor incompatible change: the list form of the FUNCTION type
specifier does not allow * as any argument type, but does allow
* as a placeholder for wholly unspecified arguments when
specifying the value(s) type.
* minor incompatible change: the default (Lisp) toplevel option
parser throws an error if it encounters an option which was
intended to be used and removed by the C runtime. (#1945081,
reported by Luke Gorrie)
* new feature: there is now a defined interface for defining
foreign callable functions, which can be used for passing
callbacks to foreign functions or for calling Lisp code from the
foreign world as a shared library (preliminary support). See the
revised manual section "Calling into Lisp From C" for more
details.
* enhancement: arg-count mismatches in self-calls in defmethod are
reported. (#1912436, reported by 3b)
* enhancement: the SB-CLTL2 contrib now returns type information
for generated structure accessors. (#1934859, reported by SATO
shinichi)
* optimization: code generation is improved for modular arithmetic
involving signed operations.
* platform support:
* x86-64 machine code emitter crash when attempting to
assemble some vector instructions. (#1945975, thanks to
Marco Heisig)
* conditional move instructions are now supported on arm64.
* a number of new peephole optimizations have been implemented
on arm64.
* arm64 on Darwin now uses gcc-compatible thread-local storage.
* bug fix: compiler notes are no longer emitted when compiling
FORMATTER forms, including when implicitly triggered on a
constant string argument to FORMAT. (#1946246, reported by SATO
shinichi)
* bug fix: a compiler error when attempting to compile a call to
AREF with too many dimensions. (#1902985)
* bug fix: harmonize the behaviour of SLOT-BOUNDP on
non-standard-objects between the various ways in which it can be
called. (#732229, reported by Zach Beane)
* bug fix: FTRUNCATE and similar functions are now more careful
about deriving facts about the sign of zero they might
return. (#1732009, reported by Paul Dietz)
New in version 2.1.9
* minor incompatible change: the experimental DEFCAS macro has
been removed.
* minor incompatible change: finalizing classes with slots with
duplicate symbol-names will only emit a warning if either slot
name is an exported symbol. (#1943559)
* platform support:
* the debugger is better able to display SIMD packs. (thanks
to Marco Heisig)
* fix a bug in zeroing YMM registers. (thanks to Marco Heisig)
* fix instruction definitions for SSE blend and shuffle vector
instructions. (thanks to Marco Heisig)
* handle heap corruption exceptions in our exception handler
on win64.
* improve WAIT-UNTIL-FD-USABLE on Windows, reducing
busy-looping. (thanks to Fabio Almeida)
* bug fix: EQUALP hash tables whose keys contain arrays containing
floats should behave correctly. (#1942424, reported by Nicolas
Neuss)
New in version 2.1.8
* minor incompatible change: the experimental DEFINE-CAS-EXPANDER
macro has been removed.
* minor incompatible change: the hooks in *INIT-HOOKS* are called
before starting the finalizer or other non-user threads. (thanks
to Sean Whitton)
* platform support:
* many improvements to code generation on arm64.
* avoid slow forms of the bit test instructions BT, BTS, BTR on x86-64.
* fix a bug in loading large core files on the Apple
M1/arm64. (thanks to Mayank Manjrekar)
* fix a bug in loading core loading on the Apple
M1/arm64. (reported by Eric Timmons)
* enhancement: the block-compiler is more robust to files with
intermingled compile-time and load-time effects. The semantics
of the block-compiler remain not-entirely ANSI
compatible. (thanks to Sean Maher)
* enhancement: (CAS SAP-REF-<x>) and CAS on alien integers is
implemented on ppc64 and x86-64, working towards fixing #1894057
* bug fix: fix OPEN-STREAM-P on streams closed by saving a
core. (#1938433, reported by Guillaume LE VAILLANT)
* bug fix: remove a spurious warning from COERCE. (#1920931,
reported by Andrew Berkley)
* bug fix: remove a warning from inlining
SET-EXCLUSIVE-OR. (#1936470, reported by Jerome Abela)
New in version 2.1.7
* incompatible change: on certain platforms (currently just
x86-64), dynamic-extent arrays specialized on character and
numeric types and created without either :INITIAL-ELEMENT or
:INITIAL-CONTENTS will reflect previous contents of the stack
instead of #\null (or 0) in all elements.
* minor incompatible change: SB-SPROF:START-PROFILING no longer
silently does nothing if the clock is already running. It
instead stop and restarts with the newly provided options, and
warns.
* minor incompatible change: the system attempts to refer to the
supplied pathname in compiler diagnostics, if relevant, rather
than the truename.
* enhancement: new contrib module sb-graph producing graphical
visualizations of Intermediate Representations of SBCL
compilation data structures.
* platform support:
* improved code generation for unary minus in modular contexts
on arm64.
* make the disassembler annotations slightly more robust on arm64.
* release space back to the Operating System on Windows.
* improve the test for whether pages need to be committed on Windows.
* fix a bug in the use of the VPCMPEQD opcode on
x86-64. (#1928516, thanks to Marco Heisig)
* optimization: the type of (LOOP ... COLLECT ...), and the type
of COLLECT INTO variables, is derived as LIST. (#1934577,
reported by SATO shinichi)
New in version 2.1.6
* minor incompatible change: COMPILE-FILE does not merge the input
file's pathname-directory into the output path if :OUTPUT-FILE
was specified and has a directory that is not :UNSPECIFIC.
* platform support:
* improvements to unwind code generation on arm64.
* on x86-64, accept three operands for vshufpd. (reported by
Bela Pecsek)
* on x86-64, improvements to use of popcount
* improve exception handling on 64-bit Windows. (thanks to
Luis Borges de Oliveira)
* bug fix: allow use of macros with improper argument
list. (#1929623, thanks to Sean Maher)
* bug fix: COERCE no longer attempts to guess what the user meant
if they provide a type specifier of a union of types other than
STRING. (#1929614)
* bug fix: print a single trailing zero after the decimal point
for FORMAT ~E if there are no digits remaining to be printed and
the width allows it. (#883520)
New in version 2.1.5
* minor incompatible change: on x86-64, the backend instruction
encoders for movzx and for string opcodes have changed their
semantics.
* platform support:
* compatibility: support the latest MinGW on x86. (#1923325,
thanks to Alexis Rivera)
* bug fix: on x86-64, fix instruction encoding for TEST on
RIP-relative addresses. (#1925808, reported by Shinmera on
#sbcl, thanks also to 3b)
* bug fix: on x86-64, loading all-1s into an AVX2 register no
longer causes an error. (thanks to Marco Heisig)
* bug fix: on arm64, improve disassembly of ADD with constant
0 as MOV
* enhancement: on arm64, support debugger commands
RETURN-FROM-FRAME and RESTART-FRAME more efficiently.
* enhancement: on x86-64, add support for vshuf* AVX2
instructions. (reported by Bela Pecsek)
* optimization: faster function calls on arm64.
* optimization: (SETF SBIT) is faster on x86-64.
* bug fix: INTEGER-DECODE-FLOAT was computing the wrong answer for
denormal double floats. (#1926383, reported by Stavros Macrakis)
* bug fix: RANDOM on a floating point argument now does not
cons. (reported by Tito Latini)
* bug fix: fix a compiler crash in type derivation of
LOGTEST. (#1928243)
* bug fix: fix a compiler failure when a declared function type
contains a literal structure with a valid MAKE-LOAD-FORM
method. (#1929160, thanks to Yurii Hryhorenko)
* optimization: FBOUNDP on a constant symbol is now faster.
* optimization: file compilation now produces smaller fasls for
files which reference package literals.
* optimization: derive the type of calls to FLOAT-SIGN.
New in version 2.1.4
* platform support:
* work around address-space randomization causing instability
on new versions of MinGW. (#1921141)
* bug fix: RANDOM on floats returns values strictly less than the
float argument.
* bug fix: compiler error on x86-64 resulting from attempting to
zero a memory location with xor. (reported by Eric Marsden)
* optimization: extended loops updating iteration variables with
THEN can perform specialized arithmetic for those updates.
* optimization: in some cases, the jump table resulting from a
compilation of TYPECASE is simpler.
* optimization: on x86-64, IF BOUNDP followed by SYMBOL-VALUE can
elide some memory loads and tests.
New in version 2.1.3
* minor incompatible change: support for the
:SB-SAFEPOINT-STRICTLY, :SB-THRUPTION, and :SB-WTIMER build
features has been removed
* platform support:
* support for :SB-CORE-COMPRESSION on Darwin/ARM64
* support ARM v8.1 atomic and compare-and-swap instructions
* x86, x86-64: microoptimizations in multiple type-checking routines
* bug fix: structures and conditions are now TYPEP all
classes in the class precedence list of their
class. (reported by Luis Oliveira)
* bug fix: derivation of the result type from subtraction
sometimes erroneously excluded zero. (#1916895)
* bug fix: reduce the number of places where the system
permissively accepts the symbol * as a type specifier where
it should not be accepted. (#1860919)
* bug fix: the code-walker used by the system's
implementation of CLOS can handle defuns declared
inline. (reported by Don Cohen)
* optimization: EQUALP on specialized vectors and arrays is faster.
* optimization: support routines for EQUALP hash tables
generate less garbage.
New in version 2.1.2
* platform support:
* support for ARM64 macOS;
* improvement in coverage mark implementation on non-x86oid backends,
approaching the existing x86oid support;
* more empirically-robust retrieval of the program counter from
illegal instruction traps on SPARC;
* retain fewer dead objects when saving cores with precise collectors.
* incompatible change: MAP-ALL-SAMPLES and MAP-TRACE-SAMPLES
are no longer present in the SB-SPROF contrib module.
* minor incompatible change: SB-SPROF:WITH-PROFILING defaults
to all threads. SB-SPROF:START-PROFILING no longer accepts
a :SAMPLING keyword.
* enhancement: the sb-introspect contrib now supports finding
the lambda lists of method combinations. (thanks to Didier
Verna)
* enhancement: short-form DEFSETF now stores a source-location.
* bug fix: canonical unions of CONS types were being
incorrectly computed. (#1912863, reported by James
Kalenius)
* bug fix: better understanding of array simplicity (or
otherwise) in the type system. (#1903241)
* bug fix: unions of rational and integer types now have a
single canonical form, allowing more correct reasoning
about them in the type system.
* bug fix: less likely to overclaim certainty about type
equality of union types. (#1916040)
* bug fix: HANDLER-BIND evaluates the forms producing handler
functions only once. (#1916302, reported by Christophe
Junke)
* optimization: FIND on constant sequences can be compiled
into a jump table, in a similar manner to POSITION
* optimization: the compiler's awareness of numeric contagion
rules for operations on pairs of floating point numbers is
improved. (#1914094, thanks to Andrew Berkley)
New in version 2.1.1
* platform support:
* restore non-threaded NetBSD builds;
* adjust how the finalizer thread is started; (#1906571, #1907872)
* fix the encoding of PEXTR on x86-64;
* minor incompatible change: emit warnings for list iteration
forms when the object being iterated over is known not to be a
list. (#1908819, reported by Michael Fiano)
* bug fix: detect 2 or 1 as an invalid number of arguments passed
to optimized slot reading or writing effective method
respectively. (#1909659, reported by Michal Herda)
* bug fix: division by zero errors were in some cases not being
signalled. (#1910098, reported by il71)
* bug fix: erroneous coercions in the type system could lose
precision. (#1910294)
* bug fix: literal (read-time evaluated) NaNs in source code no
longer cause compiler crashes. (#1909881, reported by Michal
Herda)
* bug fix: detect more erroneous syntax in method
bodies. (#1912362, reported by Paul M. Rodriguez)
* optimization: the compiler's understanding of EXPT is improved,
reducing the introduction of COMPLEX types. (#1908830, reported
by Michael Fiano)
* optimization: the compiler is better at computing numeric
contagion when (COMPLEX FLOAT) types are involved.
* micro-optimizations:
* moving from slightly-bigger-than-fixnum ranges is more
efficient on x86-64;
* encode character comparisons with smaller operands on x86-64;
* truncating (and related operations) on floats can be inlined
in more cases on 64-bit platforms;
* rounding can use specialized instructions on ARM64 and on
x86-64 when SSE4 is available;
Changes since version 2.0.7
New in version 2.1.0
* minor incompatible change: the MAKE-EA internal function, used
in the assembler, has been removed (affecting some libraries
defining their own Virtual Operations)
* new feature: SB-EXT:PRIMITIVE-OBJECT-SIZE can be used to
interrogate the low-level size in memory of objects. (#1636910,
reported by anquegi)
* platform support:
* pass required -std argument to the compiler on Solaris
(#1885751, thanks to Jesse Off)
* better treatment of non-ASCII program arguments on Windows
(#1907970, reported by Timofei Shatrov)
* implement the improved TYPEP with structure types on all
other supported platforms (32-bit PowerPC, ARM, ARM64, MIPS,
SPARC, RISC-V)
* enhancement: stream dispatch (to vanilla ANSI / Gray / Simple
variants) has been rewritten and optimized, fixing a number of
bugs including:
* performance of WRITE-SEQUENCE on composite streams (#309136)
* handling of CLOSE on SYNONYM-STREAM (#1904257, reported by
Richard M Kreuter)
* handling of CLOSE on BROADCAST-STREAM with no components
(#1904722, reported by Richard M Kreuter)
* loading SB-SIMPLE-STREAMS breaks functionality of other
stream classes (#1908132)
* some excessive consing in READ-LINE
* enhancements related to RUN-PROGRAM:
* improved the documentation related to the ARGS argument
(#806733, reported by mon_key)
* added a PRESERVE-FDS argument
* bug fix: ensure that TYPE-OF returns something even on internal
instances, which may become visible in the debugger. (#1908261,
reported by Philipp Marek)
* bug fix: iteration variables established by standard forms
should always be considered used by the compiler. (#719585,
reported by Roman Marynchak)
* bug fix: don't allow compiler transformations to weaken the
requirement against extended (list-form) function names in
FUNCALL and related operators. (#310069)
* bug fix: improve automated version number generation in
branches. (#897867, thanks to Martin Cracauer)
* bug fix: add possibly-spurious futex wakes when unwinding from a
call to futex-wait, to avoid deadlocks from interrupted
waits. (#1038034)
* bug fixes in the compiler:
* error on malformed DESTRUCTURING-BIND (#1738638)
* error on malformed SPECIAL declaration (#1740756)
* error from use of VALUES type in COERCE (#1887712)
* enforcement of FTYPE types involving &OPTIONAL (#1903932)
* checking for proper-list-ness before applying transforms (#1905512)
* compilation of LAMBDA form including a malformed DEFUN (#1906056)
* memory fault from VALUES-related handling in high DEBUG code
(#1906563)
* transforms handle explicit NIL arguments in :END arguments
to SEARCH (#1907924)
* bug fix: return COMPILED-FUNCTION for TYPE-OF on compiled
functions. (#1906583)
* some bugs were also closed in this release cycle as obsolete,
having been fixed by the passage of time or other change in the
environment:
* floating point error reporting on OS X (#309454)
* load-shared-library not working from non-main threads on OS
X (#592425)
* optimization: CONSTANTLY on constant arguments returns a more
efficient function. (#1852585)
* optimization: perform fewer Lisp/Alien representation
conversions in callbacks.
* optimization: perform fewer redundant widetag tests when doing
type tests of complicated union types.
* optimization: signed-integer division on machine-word sized
operands is now implemented using multiplication, affecting
TRUNCATE, FLOOR, CEILING, MOD and REM. (This optimization was
already performed on unsigned-integer division)
New in version 2.0.11
* minor incompatible change: (ARRAY NIL (*)) is not a subtype of
STRING, as is consistent with a majority of maintained CL
implementations.
* minor incompatible change: ARRAY-RANK-LIMIT is decreased from
65529 to 256
* optimization: TYPEP on structure types is faster and more
compact on x86[-64] and ppc64.
* optimization: LOGCOUNT is faster on arm64.
* optimization: SIGNUM can be inlined if its argument type is
known. (#1903533)
* bug fix: compiler crash in tail call handling. (#1903938)
* bug fix: crash in traceroot. (#1903419, reported by Michal Herda)
* bug fix: DESCRIBE called with a string as second argument no
longer mutates that string. (#1903901, reported by Michal Herda)
* bug fix: stack clobbering by 256-bit SIMD packs on
x86-64. (#1901685, reported by Marco Heisig)
New in version 2.0.10
* minor incompatible change: the funarg given to
SB-SPROF:MAP-TRACES does not receive a wallclock time with each
trace.
* minor incompatible change: INTERNAL-TIME-UNITS-PER-SECOND has
been increased to 10^6 on 64-bit architectures.
* minor incompatible change: SIGPIPE is ignored by default again. (#1897624)
* minor incompatible change: the system code compiled under the
:LINKAGE-TABLE feature is now unconditionally compiled in, and
the corresponding entry in *FEATURES* has been removed.
* enhancement: style-warnings are issued for variables which have
an assignment but no "for-value reference" (per CLHS glossary
entry)
* bug fix: SB-CLTL2:MACROEXPAND-ALL did not expand
MULTIPLE-VALUE-BIND and MULTIPLE-VALUE-SETQ
* bug fix: CPUID-based feature detection had an index/mask
confusion (#1899239)
* bug fix: fix a deadlock on Windows (#1896802)
* bug fix: eliminate type errors when wall clocks go back
(#1028026, #1032111)
* bug fix: fix EOF handling in read-char-no-hang on concatenenated
streams (#690408, reported by Willem Broekema)
* bug fix: fix MAP-INTO on extended sequences (#1855375, thanks to
James Kalenius)
* bug fix: SB-GMP can now raise -1, 0 and 1 to the power of a
bignum. (thanks to Aaron Chen)
* bug fixes in tests:
* add a C function declaration (#1897627, thanks to Bob Felts)
* parse vmmap output more liberally (#1897722, reported by Bob Felts)
New in version 2.0.9
* incompatible change: HPPA and DEC Alpha architecture support has
been removed.
* minor incompatible change: the compiler signals a warning at
compile-time when an initform of T, NIL or 0 does not match a
STANDARD-CLASS slot's declared type.
* minor incompatible change: the runtime no longer uses SIGPIPE
internally, so the signal is deliverable to user code as is
customary. Ignoring the signal - in lieu of the OS default of
process termination - is obtainable via (SB-SYS:ENABLE-INTERRUPT
SB-UNIX:SIGPIPE :IGNORE).
* platform support:
* a number of obsolete portability layers (particularly on the
Windows platform) have been removed in favour of direct
calling of the native interfaces.
* RUN-PROGRAM now accepts a :WINDOW argument to control
whether a subprocess window should be displayed. (Thanks to
Luis Borges de Oliveira)
* the use of futexes implied by :SB-FUTEX is now implemented on FreeBSD.
* bug fix: SB-SPROF can distinguish between SBCL-internal assembly routines.
* bug fix: SB-SPROF has better output in its reports for anonymous
functions.
* optimization: CALL-NEXT-METHOD with supplied arguments in
required positions is now faster if the supplied arguments are
EQL to the original arguments.
New in version 2.0.8
* platform support:
* added support for NetBSD/aarch64;
* threads on Linux now have OS-visible names;
* removed unnecessary emulation of pthread functions on Windows;
* work around a sigwait() bug on Mac OS X;
* allow safepoint build on Mac OS X, though it probably
doesn't work very well (reported by Chris Wagner, #1382811)
* removed stub support for HPUX.
* optimization: SB-THREAD:MAKE-THREAD is faster on most platforms.
* optimization: faster RATIONAL when the result is a RATIO.
* optimization: improved cross-type comparisons (float/ratio/bignum).
* bug fix: EQUALP on pathnames was wrong
* bug fixes: fix compiler issues in:
* COUNT (#1889391)
* VECTOR-LENGTH (#1888919)
* constant-folding (#1888384)
* FIND and POSITION (#1887316)
Allow it to be built with lang/abcl. Remove build dependency on lang/sbcl
if bootstrapping.
Changes since version 1.5.7
New in version 2.0.7
* minor incompatible change: SB-THREAD:THREAD-OS-TID returns NIL
for a thread which has exited.
* minor incompatible change: OPEN no longer calls TRUENAME
implicitly on a string filespec prior to issuing an open()
system call.
* minor incompatible change: PATHNAME is no longer a STRUCTURE-OBJECT.
* documentation: HASH-FUNCTION is a function
designator. (#1888028, reported by Jacek Zlydach)
* bug fix: eliminated a potential garbage-collector deadlock when
linking with TCMalloc.
* bug fix: foreign threads (those not made by
SB-THREAD:MAKE-THREAD) can not crash with a "GC_PENDING, but
why?" error when returning back from Lisp into the foreign
caller.
* bug fix: sb-fasteval crashed trying to install a JIT-compiled
DEFSTRUCT accessor in a locked package.
* bug fix: removed misuse of putwc() which caused stdio streams to
drop characters.
* bug fix: the "maximum interrupt nesting depth exceeded" error
generated in the C runtime is significantly less likely to
occur.
* bug fix: sb-sprof should no longer segfault from calling
pthread_kill() on a nonexistent thread.
* bug fix: a portability issue arising from various build hosts
(#1886255, reported by Pierre Neidhart)
* bug fix: spurious compiler warnings from REDUCE with
:INITIAL-VALUE. (#1885515, reported by Michael South)
* bug fix: an inconsistency between class hierarchies and the type
system under some circumstances involving
redefinition. (#1886397, reported by Atilla Lendvai)
* bug fix: the USE-VALUE restart for OPEN on non-existent files is
more likely to function as expected. (#1886587)
* bug fix: various invalid inputs to ROTATE-BYTE no longer cause
compiler errors. (#1887164, #1888152)
* optimization: PPC64 on linux uses the __thread annotation on C
variables in preference to pthread_setspecific() and
pthread_getspecific().
New in version 2.0.6
* planned incompatible change: the defined symbols in the
Metaobject Protocol, currently accessible from both SB-MOP and
SB-PCL packages, will in a later release be no longer exported
from SB-PCL.
* platform support:
* better support for dynamic-extent on the SPARC architecture.
* bug fix for loading very large core files.
* bug fix for logior and logxor on PPC64.
* enhancement: EQUALP on structure instances uses code specialized
to each structure type, inlining comparison of non-pointer
slots.
* enhancement: some standard operators, such as
WITH-OUTPUT-TO-STRING and CHANGE-CLASS, have been adapted to use
dynamic-extent temporary objects, and so cons less garbage on
the heap.
* enhancement: read tables are more space- and speed efficient
* bug fix: stream conditions with dynamic-extent streams have the
stream replaced by a stub. (reported by Matt Kaufmann)
* bug fix: garbage collections triggered from foreign callbacks
crashed. (#1884403, reported by Andrew Kent)
* bug fix: compiler failure in compiling MAKE-LIST. (#1881349)
* bug fix: using the debugger from frames with calls to functions
with unsupplied optional arguments is less likely to cause heap
corruption. (#1883745)
New in version 2.0.5
* platform support:
* experimental support for ARM32 and ARM64 on OpenBSD
* better musl libc support. (#1768368, thanks to Eric Timmons)
* more correct use of futexes on 64-bit Linux. (#1876825,
reported by Ilya Perminov)
* restore building on current Solaris. (#1881393, thanks to
Shawn Ellis)
* enhancement: CMUCL-style START-BLOCK and END-BLOCK declarations
are now supported for block compiling forms at a sub-file
granularity.
* enhancement: IPv6 support in sb-bsd-sockets is enabled on Windows.
* minor change: *compile-print* now makes it more clear what block
compilation is actually doing. The default output is now
slightly more verbose as a result.
* bug fix: number keys in EQUALP hash tables are correctly
hashed. (#1878653, reported by Syll)
* bug fix: EQness is better preserved given partial sharing of
list contents in the file compiler. (#1583753, reported by Denis
Budyak)
* bug fix: the peephole pass neglected to preserve jump table
labels. (#1876485)
* bug fix: fix compiler crash in block compilation merging of
toplevel lambdas. (#1865336, reported by il71)
* bug fix: sb-introspect's function-lambda-arglist is better at
extracting default values of nested macro arguments. (#1876194)
* bug fix: RESTART-BIND's body is an implicit progn, and so does
not accept declarations. (#1876303, reported by Michal Herda)
* optimization: EQUAL hash tables with keys involving
structure-objects will have fewer systematic collisions.
New in version 2.0.4
* platform support:
* 32-bit RISC-V is now fully supported. Unlike other ports,
its backend is entirely shared with 64-bit RISC-V.
* native threads are now supported on RISC-V.
* fix and add some x86-64 vector instructions. (reported by
Shubhamkar Ayare)
* improve pointer representation on ppc64 for low-level
performance improvement.
* threads are more stable on big-endian ppc64
* enhancement: forward-referenced type tests can now be open-coded
by using block compilation. The result is that mutually
referential defstructs are now efficiently compiled in block
compilation mode, superseding a lighter mechanism that worked in
fewer contexts. However, that lighter mechanism has been
removed, so for now, users who want to efficiently compile
mutually referential defstructs must explicitly opt-in using
block compilation.
* bug fix: defstructs with empty initforms in the sbcl source are
now explicitly intiialized with NIL, as that is undefined
behavior under ANSI. This helps cross compilation hosts which do
not implicitly initialize empty initform slots to NIL. (Thanks
to Karsten Poeck)
* bug fix: backtracing through assembly routines now works
properly on RISC-V.
* bug fix: ASH no longer gets miscompiled in certain edge cases on RISC-V.
* bug fix: &MORE args have been slightly optimized and are more
correct on RISC-V.
* bug fix: unused local functions with &REST/&KEY/&OPTIONAL now
also issue a deletion note.
* bug fix: APPLY on a large list ("large" being in excess of 2k to
16k items depending on the platform) can no longer crash the
gencgc collector.
* bug fix: sb-concurrency FRLOCK algorithm has been corrected. (#1087955)
* bug fix: block compilation now respects inlining declarations
better (like CMUCL).
* optimization: hashing of structures with raw slots for EQUALP
hash tables has been improved.
New in version 2.0.3
* incompatible change: the external format now defaults to UTF-8
and is not affected by LANG. SB-EXT:*DEFAULT-EXTERNAL-FORMAT* is
now the only way to change it.
* minor incompatible change: the undocumented :EPHEMERAL argument
to MAKE-THREAD has been removed.
* minor incompatible change: DECLARE type testing of structure
types when the SAFETY optimization quality is less than SPEED
(but greater than 0) is precise, rather than merely testing that
an object is a (general) STRUCTURE-OBJECT.
* platform support
* respect sunos platform assembler flag handling
* riscv architecture can be detected during the build
* enabled the sb-dynamic-core feature on riscv, sparc, and
made it unconditional everywhere
* cheneygc is an option for arm and arm64
* enhancement: the installed sbcl executable tree can be renamed
or moved without risk of incorrectly referencing a '.core' file
from an obsolete path. (#666086)
* optimization: transform (values-list (list one-item)) to (values
one-item) as multiple items were already recognized.
New in version 2.0.2
* new feature: CMUCL-style block compilation support has been
added, allowing whole program optimization. It has been
documented in a new section of the manual entitled "Advanced
Compiler Use and Efficiency Hints". In particular, users of
block compilation will find a large speedup for numerical code,
as functions which call or return floating point values will
keep everything unboxed.
* bug fix: in CHANGE-CLASS, handle non-standard
slot-value-using-class for :INSTANCE and :CLASS slots
better. (reported by Shinmera on #sbcl)
* bug fix: REMHASH in an EQUAL or EQUALP hash-table works
correctly on a key for which EQUAL (respectively EQUALP) is
reduced to EQ. (#1865094)
* bug fix: do not emit a warning for DEFCLASS slots with
mismatched :TYPE and :INITFORM when the class has a non-standard
metaclass.
* bug fix: DISASSEMBLE on SPARC is less likely to spuriously
annotate code sequences as error traps.
New in version 2.0.1
* minor incompatible change: some symbols have been removed from
*FEATURES* based on a determination of which should be
impermissible to examine via #+ and #- reader macros in
user-written code.
* optimization: DEFSTRUCT copiers including COPY-STRUCTURE are
able to stack-allocate the result when declared dynamic-extent.
* bug fix: loop analysis code more robust. In particular, loop
nesting depth is computed more accurately, improving the
register allocation around loops.
New in version 2.0.0
* minor incompatible change: heap relocation now works on
Windows. Since this feature now works on all platforms, it is
enabled unconditionally and the :RELOCATABLE-HEAP symbol no
longer appears on *FEATURES* in any builds. (Thanks to Luís
Borges de Oliveira)
* enhancement: malformed type specifiers and occurrences of
deprecated types in :TYPE initargs of DEFCLASS and
DEFINE-CONDITION slot specifications are detected and result in
compile-time errors and warnings respectively.
* enhancement: parallel contrib building, controlled by
SBCL_MAKE_JOBS=-jX the same as for the C runtime.
* bug fix: add a walker template for WITH-SOURCE-FORM.
* bug fix: start the summary of a compilation unit on a fresh
line. (Thanks to Zach Beane)
* bug fix: on Windows, PARSE-NATIVE-NAMESTRING produces an
absolute directory when parsing a bare drive name and
:AS-DIRECTORY is specified. (Thanks to Luís Borges de Oliveira)
* bug fix: on RISCV, the runtime is linked with libz if the core
compression feature is requested. (Thanks to Andreas Schwab)
* bug fix: ADJOIN using an EQL test and a KEY function only
transforms into an EQ test if the key function returns values
for which EQ and EQL are guaranteed to be the same.
* optimizations:
* the instruction sequence for multiple-value calls is more
efficient on x86-64.
* the direction flag is now unused on x86 and x86-64 when
handling an unknown number of return values. (Thanks to
Fanael Linithien)
* the x86-64 backend is better able to use memory operands for
arithmetic operations.
* compilation of TYPECASE to a jump table is enabled when all
the types being tested are frozen.
* compilation of CASE and ECASE into a jump table has been
implemented on 32- and 64-bit powerpc platforms.
* the implementation of Unicode normalization has been sped up.
* pretty-printing dispatch on conses is faster, particularly
with the standard pretty-print dispatch table. Deeply-nested
forms should also pretty-print faster.
New in version 1.5.9
* platform support:
* a message intended to be more helpful will be displayed for
an mmap failure on OpenBSD.
* the soft-float ABI on ARM32 is better supported, in
particular in returning double floats from calls into C.
* optimizations:
* CASE and ECASE with symbols as keys may be optimized into a
vector lookup if all result forms are quoted or
self-evaluating objects.
* CASE and ECASE can be optimized into a jump table on the
x86[-64] backends with arbitrary result forms provided that
the clause keys are either all fixnums, all characters, or
all symbols.
* a number of forms are converted to use CASE in circumstances
where that makes sense, including calls to POSITION, MEMQ
and MEMBER, and TYPECASE where the types are MEMBER/EQL
types.
* POSITION of a variable symbol in a constant sequence of
symbols is converted to CASE and thence to a jump table.
* TYPECASE of a variable where the clauses are member types is
converted to CASE and thence to a jump table.
* a number of slow instructions are no longer used on x86 and
x86-64 machines. (Thanks to Fanael Linithien)
* the compiler is better at tracking the implications of
branches after EQ and EQL tests.
* parsing &KEY lists is slightly less register-intensive.
* a pattern-based peephole optimizer pass has been added,
running some simple transformations on the x86-64 backend.
* enhancements: more thorough compile-time type checking of
various initforms (defclass, &key, defstruct).
* bug fix: unions of complicated CONS types are less likely to
cause an infinite loop. (#1799719)
* bug fix: DESCRIBE on functions not named by extended function
designators no longer signals a type error. (#1850531, reported
by Michal Herda)
New in version 1.5.8
* platform support:
* support for Mac OS X Catalina
* improvements in interoperability with C code compiled with
memory sanitization options
* libsbcl.so links to zlib when sb-core-compression is
enabled. (#1845763, thanks to Juan M. Bello-Rivas)
* workarounds for BSD issues around mmap() and
pthread_attr_setstack(). (#1845936) support SSE for bzero if
available on OpenBSD
* optimizations:
* improved type understanding and translations for division
operators (including TRUNCATE, GCD, LCM).
* sequential comparisons and branches can elide intermediate
comparisons. (#1847284)
* convert EQUAL and EQUALP to EQL if either of the arguments
is a type for which the structural equality predicate is
identical to the simpler equality check. (#1848583)
* internal operators implementing string comparisons produce
simpler-to-consume values. (#1848776)
* bug fix: inspecting adjustable arrays and vectors with fill
pointers works better. (#1846191, reported by Yves Pagani)
* Don't request job control in the shell scripts used during the build
via the "-m" option; it will cause a backgrounded job to stall with
SIGTTIN.
* Add a Config.generic-netbsd, and collect common settings for all
the various NetBSD configs there.
* Do tty handling in sbcl the same way OpenBSD does, i.e. no TIOCNOTTY.
Bump PKGREVISION.
Changes between version 1.5.6 and version 1.5.7
* platform support:
many bug fixes to the experimental 64-bit PowerPC/Linux port, to the
extent that the little-endian variant passes all applicable tests in
the regression test suite; the big-endian variant currently has some
failures
experimental support for sb-threads on 64-bit PowerPC/Linux
support threads on x86-64 Sun OS (#1841280)
handle PAX restrictions on mprotect() on NetBSD
experimental support for HaikuOS
the runtime is built as a position-independent executable by default
on x86-64 Linux and x86-64 Darwin
* fixes and enhancements related to Unicode:
update of the data files to Unicode 8.0
fix a bug in the implementation of the Unicode line breaking algorithm
regarding hebrew letters and hyphens
* enhancement: add a restart to OPEN with :IF-EXISTS :ERROR to
allow re-opening with :APPEND. (#806398, reported by Tobias
Rittweiler)
* bug fix: compiler optimizations on SEARCH with :FROM-END T
didn't account for the empty sequence. (#1844821)
* bug fix: handle SETF of nested empty VALUES correctly. (#1806478)
optimization: FLOOR and CEILING on rationals are simpler, and
the compiler's understanding of them is better.
Changes between version 1.5.5 and version 1.5.6
* platform support:
experimental support for 64-bit PowerPC running Linux (extending Brian
Bokser's work from 2018), on both the v1 and v2 ABIs
new feature: SB-EXT:SEARCH-ROOTS discovers paths from live objects to
the roots keeping them alive.
* enhancement: string output streams created with :ELEMENT-TYPE
'BASE-CHAR use internal buffers of BASE-STRING instead of UCS-4
strings restricted to the ASCII range, yielding a theoretical 4:1
space reduction.
* optimization: improved make-array type derivation for multi-dimensional
arrays. (#1838442)
* bug fix: compliant redefinition of classes whose previous definition
caused argument mismatch errors does not generate errors any
more. (#1840595, reported by 3b on #sbcl)
* bug fixes for issues caught by the random tester:
never derive the type of TRUNCATE on arbitrary numbers as the empty
type. (#1838267)
provide out-of-line definitions for internal machinery related to
FLOAT-SIGN. (#1838337)
include COMPLEX in the derived type of SIGNUM when appropriate. (#1838333)
more correct internal type testing for function types. (#1838808,
#1838888, #1838986)
don't assume that all objects of type (NOT SIMPLE-ARRAY) have an array
header. (#1838827)
recognize that PHASE on non-positive numbers can return 0 as well as
PI. (#1838892)
Changes between version 1.5.4 and version 1.5.5
* platform support: - SunOS: bug reports and patches from Richard Lowe
in sb-posix tests (#1837495), sb-concurrency tests (#1837817),
unencapsulated tracing (#1837307), float registers in interrupt
contexts (#1837168)
* bug fix: do not generate version.lisp-expr from git describe if the
git repository is not sbcl's own. (#1836663, thanks to Richard Lowe)
* bug fix: compiler crash related to VALUES-LIST on a &REST argument in
some contexts. (#1836096, reported by Samuel Jimenez)
* bug fix: compiler hang related to constraint propagation. (#1835599,
reported by Mark Cox)
* bug fix: the inspector showed the wrong array element type. (#1835934,
reported by Richard M Kreuter)
* optimization: numerous improvements to hash table access and rehashing
* optimization: ASSERT compiles into substantially more compact code.
(#1835221)
Changes between version 1.5.3 and version 1.5.4
* minor incompatible change: hash tables on 64-bit machines consume roughly
20% less memory but can only grow to hold 2^31 entries (theoretically)
due to use of 31-bit indices internally.
* platform support: - RISC-V: improve rotate-byte support (thanks to Philipp
Matthias Schaefer)
* bug fix: the system reasons more correctly regarding the array rank of
complicated array types. (reported by Bart Botta)
* bug fix: DOUBLE-FLOAT-P never gets weaked to NUMBERP. (reported by Bart
Botta)
* enhancement: the regression test suite can now benefit from paralellism,
completing much faster when enough compute power is available.
* optimization: readtables with non-base-char dispatch characters are less
inefficient.
* optimization: INTERN performs fewer redundant type checks.
* optimization: tests for PATHNAMEP and STRUCTURE-OBJECT (including in
computing hash functions) are faster.
Changes between version 1.5.2 and version 1.5.3
* platform support: - RISC-V: numerous bug fixes and improvements - all
platforms: better run-program performance when used from multiple threads.
* enhancement: (declaim (optimize (debug 2))) ensures compilation of
top-level forms, providing better debugging for simple forms that are
otherwise "byte-code interpreted" when compiled into FASLs.
* bug fix: use of finalizers could in rare circumstances cause a crash in
the garbage collector.
* bug fix: show extended function designators, e.g. (setf foo), in the
disassembler
* optimization: reduced overhead of calling NTH/NTHCDR.
* optimization: improved FLOAT-SIGN on DOUBLE-FLOATs on 64-bit platforms
Changes between version 1.5.1 and version 1.5.2
* enhancement: RISC-V support with the generational garbage collector.
* enhancement: command-line option "--tls-limit" can be used to alter
the maximum number of thread-local symbols from its default of 4096.
* enhancement: better muffling of redefinition and lambda-list warnings
* platform support: - OS X: use Grand Central Dispatch semaphores, rather
than Mach semaphores - Windows: remove non-functional definition of
make-listener-thread
* new feature: decimal reader syntax for rationals, using the R exponent
marker and/or *READ-DEFAULT-FLOAT-FORMAT* of RATIONAL.
* optimization: various Unicode tables have been packed more efficiently
Changes between version 1.5.0 and version 1.5.1
* enhancement: restarts for missing package errors.
* optimization: FIND-PACKAGE should be faster even when run in the context
of a package with local package-nicknames.
* optimization: fix TRUNCATE deftransform's results to have well-defined
signs
* bug fix: thread-safety problems in RUN-PROGRAM with :PTY.
* bug fix: SLEEP transform could never fire.
* build enhancement: defend against quirky host floating point implementation
* test enhancement: allow more parallelism in running the regression test
suite
Changes between version 1.4.16 and version 1.5.0
* enhancement: SB-COVER emulates IN-PACKAGE when recording source maps;
this makes it possible to generate coverage for forms that uses local
package nicknames, or otherwise must be read in the correct package.
* build enhancement: new host quirks mechanism, support for building
under ABCL and ECL (as well as CCL, CMUCL, CLISP and SBCL itself)
* optimization: (FIND-SYMBOL x "P") for constant "P" executes faster,
subject to "P" not being a package-local nickname of any package.
Similarly INTERN. (#1814924)
* optimization: bounds checks are elided when possible where the same
array is dereferenced multiple times.
* bug fix: initargs are now deduplicated when computing effective slots.
* bug fix: TREE-EQUAL with :TEST 'EQL now correctly computes its answer.
(reported by Bahodir Mansurov)
* bug fix: compiled (COERCE x 'FLOAT) no longer coerces double-floats into
single-floats. (reported by J. Gareth Williams)
Changes between version 1.4.15 and version 1.4.16
* minor incompatible change: ENSURE-DIRECTORIES-EXIST no longer
establishes a CONTINUE restart in case of an error.
* minor incompatible change: Defining macros (DEFVAR, etc) which require
a symbol as the name will fail to macroexpand if given a non-symbol.
* enhancement: the unexported restart names SB-{ALIEN,FASL,IMPL,PCL}::RETRY
have been replaced by SB-EXT:RETRY.
Changes between version 1.4.14 and version 1.4.15
* enhancement: added AVX2 instructions on x86-64, which can be used with
SB-SIMD-PACK.
* enhancement: specializer name parsing is less lenient and signals a
specific condition in case of syntax errors. (#1808681)
* enhancement: provide interactive restarts for some file-system errors.
* enhancement: COMPILE no longer acquires the world lock. (fixes most
occurrences of #308959)
* bug fix: RUN-PROGRAM is more responsive and less likely to deadlock
(#1702178, #1808641)
* bug fix: traceroot can search for simple-fun targets (#1808659,
reported by Michal Herda)
* compiler bug fixes:
related to code generation: #1805899, #1806982, #1807455
related to interpreting and constant-folding: #1806513
related to the type system: #1804759, #1804796
related to eq-testing of structure slots: #1809582, #1808273
related to dynamic-extent: #1809565, #1809253, #1809485, #1739652
related to GC safety: #308949
Changes between version 1.4.13 and version 1.4.14
* enhancement: attempting to build on openbsd 6.0 or newer without the
wxallowed mount option now results in a more useful error message.
* enhancement: by popular demand, SB-EXT now exports two functions
HEAP-ALLOCATED-P and STACK-ALLOCATED-P to assist in writing debug
assertions that objects in hash-tables are not stack-allocated, etc.
* bug fix: restored sb-thread support on OpenBSD.
Changes between version 1.4.12 and version 1.4.13
* minor incompatible change: PRINT-TYPE and PRINT-TYPE-SPECIFIER are not
exported from SB-EXT. These were never announced, so this change would
only affects users who discovered these undocumented functions.
* enhancement: SB-EXT:SEARCH-ROOTS and SB-EXT:GC-AND-SEARCH-ROOTS are
supported on all backends that use gencgc.
Changes between version 1.4.11 and version 1.4.12
* minor incompatible change: a number of platform-specific elements of
*FEATURES* related to whether the system implements particular
strategies have been removed.
* minor incompatible change: some changes to the (internal) implementation
details of the x86 and x86-64 have necessitated changes to some
low-level libraries.
* enhancement: attempting to transfer control through GO or RETURN-FROM
to frames which no longer exist are now caught and handled by the debugger.
* enhancement: identical code (at the machine instruction level) can now
be shared between functions, if explicitly requested.
* enhancement: SB-EXT:STRING-TO-OCTETS and SB-EXT:OCTETS-TO-STRING are
now documented.
* bug fixes: fix a number of bugs revealed by random testing (#1793171,
#1793150, #1791550, #1792030, #1791059, #1790157, #1790717, #1790703)
Changes between version 1.4.10 and version 1.4.11
* minor incompatible change: changes to the (internal) assembler on x86
and x86-64 may cause problems to some low-level third-party libraries:
new macro EA for defining an effective address, without size
information;
an explicit size modifier is now needed for MOVSX and MOVSZ
instructions;
MOVD and MOVQ move a single size of operand by definition.
* enhancement: support the latest MinGW (#1786731, reported by il71)
* enhancement: checks for modifications of constants can now be done in
local (FLET/LABELS) functions.
* optimization: improved type checking routines for various compound types.
* optimization: array bound checks are elided on vectors when the index
is known to be less than the length, including LOOP ACROSS.
* optimization: the register allocator's use of temporaries is somewhat
improved.
* optimization: checking widetags involves fewer conditional jumps on x86
and x86-64.
* bug fix: fix a number of bugs related to constant improper lists as
sequence arguments (#1768563, #1768568, #1768652)
Changes between version 1.4.9 and version 1.4.10
* enhancement: added SB-EXT:MAKE-WEAK-VECTOR.
* enhancement: constant-modification detection warnings can be generated
in the presence of conditional constructs.
* optimization: better bounds-checking on x86[-64] and ARM64.
* optimization: adding 1 to or subtracting 1 from a fixnum variable does
not cons.
* bug fixes: fix a number of bugs revealed by random testing (#1782826,
#1779878, #1779737)
Changes between version 1.4.8 and version 1.4.9
* enhancement: SB-COVER instrumentation for x86[-64] has signficantly
less overhead. The performance penalty for 64-bit code has been
measured at around 30% slower than uninstrumented code as contrasted
with slowdowns in excess of 100% previously.
* enhancement: tracing a generic function with the :METHODS T option
produces output corresponding to each method called under the default
:ENCAPSULATE NIL tracing implementation.
* bug fix: updated TRACE documentation. (#574614 was actually already
fixed, but there were other issues.)
* bug fix: fixed x86 GC bug causing heap corruption. (#1749369)
* bug fix: improved compatibility with macOS High Sierra and graphical
applications.
Changes between version 1.4.7 and version 1.4.8
* bug fix: redefinition of method combinations now does the expected
thing; generic functions using that method combination have their
effective methods lazily recomputed according to the new definition
of the method combination. (Reported by Didier Verna at ELS 2018)
* bug fix: :arguments argument to the long form of DEFINE-METHOD-COMBINATION
is now implemented more correctly, supporting suppliedp variables and
&optional defaults. (Reported by Bruno Haible, #309084)
Changes between version 1.4.6 and version 1.4.7
* enhancement: better handling of unknown keyword arguments (#1750466)
* enhancement: namestrings can now be computed for certain pathnames
that previously did not have namestrings because of #\. characters
in their name and/or type components.
* bug fix: compiling a SLEEP call with a float positive infinity
argument no longer causes an internal error (#1754081)
* bug fix: keyword arguments provided to a generic function with
EQL-specialized methods are checked more correctly (reported by
Syll, #1760987)
Changes between version 1.4.5 and version 1.4.6
* enhancement: DISASSEMBLE on a symbol naming a macro will
disassemble the expander, not the code that traps attempted
FUNCALL of the macro.
* enhancement: The sb-sprof contrib now provides an experimental
interface for accessing collected profiler data.
* enhancement: The instruction-level profiling of the sb-prof contrib
annotates the disassembler output more efficiently.
* optimization: improved dynamic-extent handling of nested variables.
Changes betweenNew in version 1.4.5
* minor incompatible change: building with/without the :sb-package-locks
feature is no longer an option. Package locks are always compiled in,
and removing :sb-package-locks from *features* will have no effect.
* enhancement: FIND-PACKAGE does not acquire a mutex
* enhancement: cheneygc can perform heap relocation on startup
* enhancement: in threaded builds, finalizers execute in a system-internal
thread so that a user thread which invokes GC is unblocked from
performing work as soon it returns from GC and invokes any post-GC hooks.
As such, it is more important than before to avoid assumptions about
special variable bindings in finalizers, even in single-threaded code.
* optimization: faster (funcall (or function symbol)) on x86-64.
Changes between version 1.4.3 and version 1.4.4
* bug fix: pathname accessors such as PATHNAME-DIRECTORY work on
SYNONYM-STREAMs.
* bug fix: (pathname-{device,directory,name,type} ... :case :common) works
as expected. In particular MAKE-PATHNAME composed with the accessors
roundtrips properly when both use the same :case. (#1739906)
* bug fix: DIRECTORY no longer gets confused when the value of
*DEFAULT-PATHNAME-DEFAULTS* has a name or type component. (#1740563)
* bug fix: pattern pieces in pathname components are correctly
escaped during unparsing.
* bug fix: DELETE-DIRECTORY no longer signals an error when the
directory is supplied as a pathname with name and/or type
components containing escaped characters. (#1740624)
* bug fix: weak hash-tables no longer cause GC time to scale
superlinearly (#1241771)
* bug fix: CANCEL-FINALIZATION operates in approximately constant
time per operation (#1587983)
* bug fix: big-endian MIPS systems now (mostly) work again (broken
since 1.3.14.x).
* bug fix: backtrace from arg-count errors on systems other than x86,
x86-64, ARM, and ARM64 now works again.
* bug fix: backtrace from asynchronous interrupts on non-x86,
non-x86-64 systems should now be more reliable.
* enhancement: warnings and errors referring to bindings established by
LET, LET*, FLET and LABELS point to the offending form more accurately.
* enhancement: backtrace for invalid argument count produces the
exact supplied arguments including the extra ones on all platforms
(no longer just x86, x86-64, ARM, and ARM64).
- Due custom do-{build,test,install} UNLIMIT_RESOURCES were not honored leading
to:
//slurp-ucd
*** - No more room for LISP objects
errors. Adjust these target to honor UNLIMIT_RESOURCES.
- sbcl does not work with PaX MPROTECT because mmap()s by OR'ing all
PROT_{EXEC,READ,WRITE}. Unfortunately src/runtime/sbcl is also
used as part of building needing also `${PAXCTL} +m' in the middle
of the build.
Introduce an SBCL_PAXCTL variable (by default `:') via
patch-src_runtime_GNUmakefile that execute a program against src/runtime/sbcl
and define it for platforms that have a paxctl tool.
Mark bin/sbcl with NOT_PAX_MPROTECT_SAFE too.
- Refactor the environment variables injection logic in do-{build,test,install}
to honor MAKE_ENV and INSTALL_ENV.
- Minor mostly cosmetic adjustments (use ${RM}, not rm)
Bump PKGREVISION
changes in sbcl-1.4.3 relative to sbcl-1.4.2:
* enhancement: SLEEP respects deadlines established by SB-SYS:WITH-DEADLINE.
* bug fix: DECODE-TIMEOUT and operators accepting a timeout no longer signal
an error when called with an argument that is of type (real 0) but not
(unsigned-byte 62) (lp#1727789)
* bug fix: fixed heap exhaustion bug when consing millions of small objects
* bug fix: sb-safepoint builds are now a lot less prone to deadlocks and odd
crashes (lp#1424031, lp#1268710)
* bug fix: argumentless CALL-NEXT-METHOD where specialized-to-T or
unspecialized parameters are mutated now uses the original (non-mutated)
parameter values (lp#1734771)
* bug fix: memory faults from lisp no longer use (thread-and-interrupt
unsafe) global storage for fault addresses (everywhere), and now have
cleaner backtraces (on x86 and x86-64). (lp#309068)
* bug fix: pathnames with a directory component of the form
(:absolute {:up,:wild,:wild-inferiors}) no longer fail to unparse.
(lp#1738775)
* bug fix: more reliable signal handling on macOS.
changes in sbcl-1.4.2 relative to sbcl-1.4.1:
* minor incompatible change: SB-EXT:QUIT is no longer marked as deprecated
and behaves like SB-EXT:EXIT.
* enhancement: ASDF updated to 3.3.1. The ASDF release is dedicated to
the late Elias Pipping who put enormous amounts of work into it despite
his terminal illness. Thank you and rest in peace. (lp#1681201)
* enhancement: alien routines compiled with '-fsanitize=thread' and/or
'-fsanitize=memory' cause fewer false positives in error reporting.
* optimization: fewer instances of consing float constants at runtime.
* bug fix: a number of compiler bugs detected by Paul F. Dietz' randomized
tester. (lp#1731503, lp#1730699, lp#1723993, lp#1730434, lp#1661911,
lp#1729639, lp#1729471, lp#1728692)
* bug fix: better errors from NAMESTRING and friends on pathnames with no
namestrings. (lp#792154)
* bug fix: EQUAL and EQUALP compiler transforms were too confident in
deriving a result. (lp#1732277, lp#1732225)
* bug fix: FILL sometimes returned the underlying data vector rather than
the given array. (lp#1732553)
* bug fix: SEARCH returned the wrong answer in some cases. (lp#1732952)
* bug fix: the type (COMPLEX INTEGER) behaves more as specified by Function
TYPEP, which has stronger constraints than System Class COMPLEX.
(Reported by Eric Marsden, lp#1733400)
changes in sbcl-1.4.1 relative to sbcl-1.4.0:
* optimization: faster foreign callbacks.
* enhancement: complex arrays can be stack allocated.
* enhancement: PROCESS-KILL now exists on win32 and PROCESS-PID actually
returns the PID.
* optimization: the register allocation method used by the compiler when
optimizing for speed is now faster for functions with large bodies.
* bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION works on big-endian CPUs
(fixes lp#490490 for real rather than by disabling a test)
* bug fix: code objects and bignums of large enough size to be placed
on GC pages without any other object no longer cause accidental copying
during garbage collection. (gencgc only)
* bug fix: sb-fasteval failure with 0-argument lambdas (lp#1722715)
* bug fix: RUN-PROGRAM doesn't leak handles on win32 and PROCESS-CLOSE
doesn't crash. (lp#1724472)
changes in sbcl-1.4.0 relative to sbcl-1.3.21:
* minor incompatible change: DESTRUCTURING-BIND treats non-toplevel () as
nested empty pattern. This seems to be what the standard mandates, so
conforming code should not be affected.
* ehancement: (GC :GEN 7) with gencgc will zero-fill dead pseudo-static
objects so that they do not spuriously cause reachability of objects that
would have been otherwise dead.
* enhancement: PROCESS-STATUS now tracks stopped and continued processes
properly (also fixes lp#1624941, based on patch by Elias Pipping).
* bug fix: INSPECT handles errors signaled while printing slot
values. (lp#454682)
* bug fix: DESCRIBE works on classes like it used to.
* bug fix: *LOAD-PATHNAME* and *LOAD-TRUENAME* are bound to pathnames
when processing a sysinit or userinit file
* bug fix: save-lisp-and-die is able to collect more garbage on non-x86oid
gencgc targets.
* bug fix: fixed out-of-bounds array read in optimized POSITION on bit-vectors
* bug fix: signal emulation respects the 128-byte stack red zone on x86-64
macOS.
This has been a pkglint warning for several years now, and pkglint can even
fix it automatically. And it did for this commit.
Only in lang/mercury, two passes of autofixing were necessary because there
were nested variables.
New in version 1.3.21
- minor incompatible change: the CLOBBER-IT restart for defstruct
redefintion has been removed after a 15 year deprecation cycle.
Use the new name, RECKLESSLY-CONTINUE. Note also that this restart
is hidden if deemed unsafe due to altered placement of untagged slots
in the structure.
- enhancement: the assignment of -DSBCL_PREFIX= in src/runtime/GNUmakefile
can be removed as a local patch, which results in an sbcl executable
that finds its core file relative to itself by looking in "../lib/sbcl".
- enhancement: backends using the generational GC are able to relocate
dynamic space anywhere the operating system places it. This feature
can be disabled by removing :relocatable-heap from the build configuration.
Not supported on Windows.
- enhancement: DEFMETHOD no longer signals IMPLICIT-GENERIC-FUNCTION-WARNING.
- enhancement: better type conflict detection for high order functions,
e.g. (find x "123" :test #'=)
- enhancement: the tabular output of ROOM is aligned dynamically,
preventing misaligned tables for larger sizes or counts.
- enhancement: ROOM reports on immobile space if applicable.
- optimization: optimized external-format routines.
- bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION returns :IMMOBILE
instead of :FOREIGN for objects in immobile space.
- bug fix: dotted lists in special forms and function call forms signal
an appropriate error
- bug fix: EQUALP hash tables with pathname keys now ignore internal slots.
(#1712944, reported by Jason Miller)
New in version 1.3.20
- minor incompatible change: DEF{GENERIC,METHOD} no longer accept
some illegal lambda lists such as (defgeneric bar (foo &key foo))
or (defgeneric baz (t)) that were accepted before.
- optimization: a valueless &AUX binding in a BOA constructor does not
force all slots reads in safe code to perform a full type check.
- optimization: ATOMIC-PUSH and ATOMIC-POP generate better code
- bug fix: the low-level debugger would erroneously print - or not print
as the case may be - "(bad-address)" for some objects depending whether
the --dynamic-space-size argument was used at Lisp startup
- bug fix: a DEFCONSTANT with a non non-eql-comparable object as the value
could cause miscompilation if that constant appeared as the default
expression for an &OPTIONAL binding
- bug fix: generic function lambda lists are now checked for repeated
and otherwise illegal entries. (#1704114)
- bug fix: setting gencgc_verbose = 1 could cause deadlock in fprintf()
depending on the platform's stdio implementation. The relevant code
has been changed to use snprintf() and write() instead.
New in version 1.3.19
- enhancement: specialized arrays can be printed readably without using
*read-eval*
- enhancement: SB-DEBUG:PRINT-BACKTRACE truncates huge string arguments.
The full string remains available for inspection via (SB-DEBUG:ARG).
- bug fix: backtracing from several threads at once could fail
- bug fix: floating-point infinities could not be used as keys in EQUALP
hash tables. (#1696274)
- bug fix: random sb-fasteval failures. (#1642708)
- bug fix: align the stack in callback wrappers to defend against C compiler
over-aggressive use of SIMD. (#1697528)
- bug fix: don't try to find the class when reporting that a class does not
exist for a primitive type. (#1697226)
changes in sbcl-1.3.18 relative to sbcl-1.3.17:
* minor incompatible change: existing values of CFLAGS, ASFLAGS,
CPPFLAGS, and LINKFLAGS will be incorporated into C compiler
invocations when building from source.
* minor incompatible change: the result of WRITE-TO-STRING may be
a BASE-STRING if all characters written are of type BASE-CHAR.
* minor incompatible change: the broadcast stream with no output
streams is a singleton object. That object satisfies OPEN-STREAM-P
regardless of how many times CLOSE is invoked on it.
* enhancement: x86[-64] backends contain an experimental feature
which aids in demonstrating reachability of any object starting
from a tenured object or a thread stack by producing a proof
as a sequence of pointers to follow.
The file "tests/traceroot.test.sh" contains an example usage.
* enhancement: if the alien symbol "gc_coalesce_string_literals" is
set to 1 prior to SAVE-LISP-AND-DIE, then similar string constants
loaded from different fasl files may be collapsed to one object.
If the variable is set to 2, then additionally strings which are
STRING= in code resulting from COMPILE can be coalesced.
For instance, two functions returning the literal string "HI"
might return EQ strings after collapsing, which may be undesired
in a particular use. The flag pertains to gencgc only.
* enhancement: SXHASH values on pathnames are better distributed
* bug fix: MAKE-PATHNAME removes empty strings as components of a
directory, as is permitted: "Whenever a pathname is constructed
the components may be canonicalized if appropriate."
* optimization: various printer and FORMAT performance enhancements.
* bug fix: GET-FOREGROUND no longer fails in case all other interactive
threads exit (lp#1682671, reported by Syll)
* bug fix: RELEASE-FOREGROUND always removes the current thread from the
list of interactive threads. (lp#1682867, reported by Syll)
changes in sbcl-1.3.17 relative to sbcl-1.3.16:
* enhancement: memory overhead from the garbage collector's metadata
is reduced on 64-bit architectures; no change for 32-bit.
* enhancement: further garbage collector speedups affecting
pinned objects on conservative backends, and simple-vectors.
* enhancement: on Linux a custom handler for SIGSEGV can be called
for page faults outside of dynamic space by changing the C symbol
"sbcl_fallback_sigsegv_handler".
* bug fix: sb-cover does not lose source positions for AND/OR/COND.
* bug fix: random disassembler failures. (lp#1527931)
* The bundled sb-md5 contrib has been updated to release 2.0.4
which is licensed under Creative Commons CC0 per author's statement
fd134e71b7
(Refer to NEWS and COPYING in the contrib/sb-md5 subdirectory)
changes in sbcl-1.3.16 relative to sbcl-1.3.15:
* optimization: various small tweaks give around 5% faster garbage
collection
* bug fix: better detection of when an impossible code path does
not need a warning. (lp#1668619)
* bug fix: stronger attempts to disable position-independent
executable building. (lp#1668986, patch from Mark Wright)
* bug fix: OPEN :IF-EXISTS NIL signalled a condition on Windows.
(lp#1674437, reported by Jan Idzikowski)
changes in sbcl-1.3.15 relative to sbcl-1.3.14:
* minor incompatible change: the reader will when feasible create
new symbols using a BASE-STRING for the print name. Additionally,
string literals can favor the base-string type if desired, though
the default is to always return UTF-32 strings for compatibility.
A preference for base-string does not disable reading Unicode.
The choice is controlled via (SETF READTABLE-BASE-CHAR-PREFERENCE).
If Unicode was disabled at build time, this setting does nothing.
* enhancement: SBCL generates more debug information by default.
* enhancement: type errors provide context information, such as which
variable is being bound, which slot of which structure is being set.
* enhancement: if #+immobile-symbols is in build-time *FEATURES* (not
enabled by default), then symbols will never be moved in memory
except by SAVE-LISP-AND-DIE. Immobility has helpful implications for
code generation as well as interaction with foreign routines.
This feature can only be enabled if #+immobile-space is enabled.
* enhancement: undefined function errors can be restarted on x86-64, to
either retry calling the function again or call a user supplied function.
* enhancement: sb-ext:restrict-compiler-policy accepts an upper bound in
addition to a lower bound.
* enhancement: #+immobile-code improves the speed of function calling.
Some delay may be noticed when redefining an existing function
from a saved core file however.
* defaults change: sb-ext:*disassemble-annotate* default to NIL, due to its
poor reliability.
* new feature: SB-LINKABLE-RUNTIME, allowing linking with extra object
files to help with delivery of executables. (Thanks to Francois-Rene
Rideau)
* bug fix: data race in GENTEMP fixed - it can no longer return the
same interned symbol to multiple threads if called concurrently
* bug fix: interrupting LOADing of FASLs does not leave functions without
source locations. (lp#540276)
* bug fix: DYNAMIC-EXTENT-declared results of NOTINLINE local functions were
treated as if they were actually stack allocated (lp#1659964)
* bug fix: correctly handle the case of a non-local exit within a function
terminating the extent of dynamic-extent, dynamic-bound variables in the
presence of multiple-values (lp#1655011)
* bug fix: handling of SB-SYS:WITH-PINNED-OBJECTS in the interpreters (both
sb-eval and sb-fasteval) now actually pins objects on gencgc.
* bug fix: AVX registers are preserved during exceptions on x86-64 macOS.
* bug fix: (directory "SOMETHING/*/**/MORE") is no longer equivalent to
(directory "SOMETHING/**/MORE")
* bug fix: better console IO on Windows (lp#1660906)
changes in sbcl-1.3.14 relative to sbcl-1.3.13:
* minor incompatible change: the SB-PCL walker no longer recognizes
macros expanding into a DECLARE expression. This is not a language change,
since ANSI forbids such usage (X3J13 issue DECLARE-MACROS:FLUSH).
* enhancement: for several macros such as MULTIPLE-VALUE-{BIND,SETQ}, COND,
DO{,*,LIST}, {RESTART,HANDLER}-{BIND,CASE}, *CASE, conditions signaled
during macroexpansion point to the form that caused the problem more
accurately.
* enhancement: the "--noinform" command-line option inhibits output from
save-lisp-and-die in addition to removing the startup banner.
* bug fix: PROCESS-KILL failed to return errno if the system call failed
* optimization: slightly more comprehensive treatment of the keyword
arguments to MAKE-ARRAY in compiler transformations.
changes in sbcl-1.3.13 relative to sbcl-1.3.12:
* enhancement: SET triggers package locks on undefined variables.
(lp#1645152)
* enhancement: new Windows specific option to run-program, :escape-arguments
(lp#1503496)
* enhancement: recompiling a MAKE-INSTANCE form with an initarg :INITARG
CONSTANT where CONSTANT names a constant variable picks up the new value
of CONSTANT in case it has been redefined. (lp#1644944)
* optimization: faster TYPEP on undefined at compile-time types and upcoming
class definitions. (lp#1082967)
* optimization: memory consumption of each STANDARD-OBJECT instance is
reduced by 2 words if the compact-instance-header feature is enabled.
* optimization: CONDITION instances are quicker to allocate.
* optimization: unoptimized calls to FILL on specialized vectors are now
just as fast as T vectors.
* bug fix: get-timezone returns corret DST on 64-bit Windows. (lp#1641058)
* bug fix: cross reference information in fasls is no longer incompatible
between different cores (lp#1648186)
New in version 1.3.12
* enhancement: on x86-64, compiled functions loaded from fasl
files can not be moved, but can be freed, by GC.
Additionally, COMPILE will produce immobile code
if SB-C::*COMPILE-TO-MEMORY-SPACE* is set to :IMMOBILE.
(Caution: the flag is experimental and subject to change.)
The benefits are better physical separation of code from
data, and potentially easier examination of live images by
external tools.
* enhancement: the docstring for SAVE-LISP-AND-DIE has been
amended to say that the :ROOT-STRUCTURES parameter is not
meaningless on gencgc, depending on the platform.
* bug fix: calling a named function (e.g. a DEFUN) concurrently
with redefining that same function could lead to execution of
random bytes.
* bug fix: yes-or-no-p accepts formatter functions (#1639490)
* bug fix: better handling of exceptions on macOS.
New in version 1.3.11
* minor incompatible change: SB-EXT:*INTEXP-MAXIMUM-EXPONENT*
is removed.
* enhancement: TRACE ... :REPORT {TRACE,NIL} now work as
advertised in the documentation string (based on patch by
Patrick Stein)
* enhancement: support unboxed signed-word structure slots on
x86, x86-64 and ARM64. (#377616)
* optimization: faster logical bit-array operations on
multidimensional arrays.
* optimization: better GC performance in the presence of many
threads. (patch by Ilya Perminov, #1339924)
* optimization: multiple-value-call is optimized with multiple
argument forms, not just one. (#753803)
* bug fix: MAKE-ALIEN-STRING returns the number of allocated
bytes as a second value as advertised (reported by Johann
'Myrkraverk' Oskarsson)
* bug fix: when TO-READTABLE is supplied to COPY-READTABLE, it
will contain only the macros in FROM-READTABLE and no others.
(#1631506)
* enhancement: gencgc has been modified for x86-64 on Linux and
macOS to a support mark-and-sweep as well as the traditional
copying strategy. It is conceivable that some applications
might be adversely affected. Please see ':immobile-space' in
'base-target-features.lisp-expr' for further details, and
possible reasons to disable this feature.
* enhancement: x86-64 supports shrinking the fixed overhead in
a structure from 2 words to 1 word, reducing memory
consumption in applications which create many small
structures.
New in version 1.3.10
* enhancement: more compact low-level error signaling code
* enhancement: more compact encoding of cross-reference information
* optimization: faster out of line fixnum-float comparisons.
* optimization: filling a known simple-vector with a constant value is about
as fast in unoptimized code as in code compiled with (SPEED 3), and the
x86-64 implementation is able to use SSE instructions.
* bug fix: correctly handle the case of a non-local exit within a function
terminating the extent of dynamic-extent functions and variables in the
presence of multiple-values (#1563127)
* bug fix: restore builds on the latest OSX with the latest Xcode (#1470996)
New in version 1.3.9
* minor incompatible change: NAMESTRING prefers to return a BASE-STRING
instead of (ARRAY CHARACTER (*)) when possible.
* enhancement: cached make-instance/allocate-instance constructors can now
get garbage collected.
* optimization: better performance for some unoptimized operations on complex
numbers.
* bug fix: using the options :LOCAL-NICKNAMES and :LOCK in the same
DEFPACKAGE form no longer signals a bogus error
New in version 1.3.8
* minor incompatible change: the system now understands that the CONDITION
type is disjoint with many other system types.
* minor incompatible change: argument types in condition report functions are
now declared (in combination with the above change, this can result in
early detection of erroneous code).
* enhancement: simple arrays of any rank can be stack-allocated on platforms
supporting stack allocation of vectors.
* optimization: improved type derivation for FIND, POSITION, COUNT, SEARCH,
MISMATCH and other array and sequence functions.
* optimization: ALLOCATE-INSTANCE is now as fast as MAKE-INSTANCE.
* optimization: more efficient CHANGE-CLASS.
* bug fix: versions of getresuid() and getresgid() in SB-POSIX no longer
cause memory faults, and should work properly (#1603806, reported by Kieran
Grant)
* bug fix: handle ENOENT from getprotobyname() (#1596043, reported by Stephen
Hassard)
New in version 1.3.7
* bug fix: preserve the name of the destructive function for the destroyed
constant and important result warnings, even when declared NOTINLINE.
* optimization: faster operations on list-sets.
* optimization: better type derivation of set functions. (#1592152)
* optimization: load-time TLS-INDEX assignment, and other microoptimizations,
on x86.
* optimizations in:
+ APPEND;
+ ECASE/ETYPECASE;
+ ARRAY-DIMENSIONS;
+ ARRAY-TOTAL-SIZE;
+ REMOVE, REMOVE-DUPLICATES, DELETE and DELETE-DUPLICATES on lists.
New in version 1.3.6
* bug fix: do not insert conditional newlines in print-unreadable-object
(#1398290). This reverses a change made in #488979 which reversed a fix
advertised in release 0.8.14 to pass the GCL ANSI Test Suite.
* bug fix: constant negative rotations of 32-bit quantities are compiled
correctly on x86-64 and arm. (#1586614, reported by Guillaume Le Vaillant)
New in version 1.3.5
* enhancement: the platform's strtod() is exposed as SB-POSIX:STRTOD
* enhancement: speed up debug info creation for highly nested functions.
* enhancement: the interleaved structure slot optimization from release 1.2.6
has been ported to all architectures.
* enhancement: support run-program I/O redirection into lisp streams on Windows.
* bug fix: better wording in missed optimization note.
* bug fix: interpreted (CAS SVREF) was broken
* bug fix: support CLISP as build host for ARM
New in version 1.3.4
* enhancement: who-sets and who-references work on DEFGLOBAL.
* enhancement: CONSTANTP understands backquote.
e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
* optimization: improvements to sequence functions: CONCATENATE,
SUBSTITUTE, REVERSE.
* bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
* bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
is less likely to cause confusion in the compiler.
* bug fix: DOCUMENTATION works as intended for classes
with non-standard metaclasses
* bug fix: (TYPEP <extended-sequence> <extended-sequence-class>)
no longer returns NIL in certain situations
* bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class
objects as result-type
* bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand
DEFTYPEs in result-type
changes in sbcl-1.3.3 relative to sbcl-1.3.2:
* enhancement: warn about argument mismatch for functions passed as
arguments to other functions (e.g. REDUCE, MAP) at compile-time.
* optimization: functions accepting other functions (e.g. REDUCE, FIND) can
now be constant-folded if all function arguments are declared as foldable.
* optimization: improved logical operations on integers of unknown type.
* bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
changes in sbcl-1.3.2 relative to sbcl-1.3.1:
* enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
of short sequences and stream types
* enhancement: MAKE-LIST's result can be stack-allocated on x86-64
* bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
to bivalent streams
* bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
arguments and small bit positions. (lp#1277690)
* bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
* bug fix: DEFUN of a function name that collides with a system-generated
structure accessor does not confuse the runtime. (lp#540063)
* bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
Previously there were at least 5 different ways MACHINE_ARCH could be set,
some statically and some at run time, and in many cases these settings
differed, leading to issues at pkg_add time where there was conflict
between the setting encoded into the package and that used by pkg_install.
Instead, move to a single source of truth where the correct value based on
the host and the chosen (or default) ABI is determined in the bootstrap
script. The value can still be overridden in mk.conf if necessary, e.g.
for cross-compiling.
ABI is now set by default and if unset a default is calculated based on
MACHINE_ARCH. This fixes some OS, e.g. Linux, where the wrong default was
previously chosen.
As a result of the refactoring there is no need for LOWER_ARCH, with
references to it replaced by MACHINE_ARCH. SPARC_TARGET_ARCH is also
removed.
changes in sbcl-1.3.1 relative to sbcl-1.3.0:
* 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. (lp#1511419)
* bug fix: structure constructor type checking is better. (lp#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) (lp#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: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
spurious wakeup
changes in sbcl-1.3.0 relative to sbcl-1.2.16:
* 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 "<" and the empty
string as confusable. (lp#1504739)
* bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
if COMPUTE-IT was a local macro that shadowed a global function.
* bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
on platforms that use only the minimum specified set of fields in struct
termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
very probably others). (partial fix for lp#1500951)
changes in sbcl-1.2.16 relative to sbcl-1.2.15:
* 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. (lp#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. (lp#492851)
changes in sbcl-1.2.15 relative to sbcl-1.2.14:
* 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. (lp#1476867)
* enhancement: definitions within PROGN get proper source locations when
compiled (needs latest Slime to take advantage of this). (lp#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.
(lp#1370561)
* bug fix: better source locations inside backqoute. (lp#1361502)
* bug fix: HANDLER-BIND requires that the handler-function be
a function designator at the time of binding establishment. (lp#1480679)
* bug fix: inlined functions surrounded by nested macrolets are properly
inlined. (lp#309123)
changes in sbcl-1.2.14 relative to sbcl-1.2.13:
* 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.
(lp#707556, lp#707573, lp#707578, lp#708051)
* enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
lp#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. (lp#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. (lp#1472785)
* bug fix: Variable-reference elimination no longer generates incorrect code
under certain circumstances. (lp#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. (lp#1390149)
* bug fix: Windows installer generates registry key name
correctly. (lp#1476447)
changes in sbcl-1.2.13 relative to sbcl-1.2.12:
* 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
* enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
printed. (lp#1437947)
* bug-fix: TRUENAME works properly on broken symlinks presented as
directories. (lp#1458164)
* bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
order of argument evaluation. (lp#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. (lp#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. (lp#1459581)
* bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
changes in sbcl-1.2.12 relative to sbcl-1.2.11:
* 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. (lp#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. (lp#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. (lp#1452539)
* bug fix: POP works as specified in CLHS if the setter for its
argument has a side-effect on the existing CAR value. (lp#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. (lp#1252100)
* bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
changes in sbcl-1.2.11 relative to sbcl-1.2.10:
* 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. (lp#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. (lp#1439151)
* bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
if OTHER names either a macro or special-operator. (lp#1439921)
changes in sbcl-1.2.10 relative to sbcl-1.2.9:
* 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.
(lp#1426667)
* bug fix: A new dead code elimination phase removes dead code loops
that confuse stack analysis. (lp#1255782, lp#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. (lp#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. (lp#1434768; thanks to Nikhil
Benesch)
changes in sbcl-1.2.9 relative to sbcl-1.2.8:
* 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. (lp#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.
(lp#492200)
* bug fix: DEFCLASS handles cyclic {super,meta}class relations better
(lp#1418883)
* bug fix: compiler no longer signals an error when compiling certain
function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
* bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
* bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
lp#1412881, lp#945261, lp#1419205, lp#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. (lp#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. (lp#1387404)
* bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#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. (lp#1044465)
* bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
changes in sbcl-1.2.8 relative to sbcl-1.2.7:
* enhancement: better error and warning messages. (lp#1314767, lp#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. (lp#1308328, lp#1390544)
* bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
did not work, and now it does.
changes in sbcl-1.2.7 relative to sbcl-1.2.6:
* optimization: returning constant values refers to preboxed constants
more reliably. (lp#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. (lp#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 (lp#1405456).
changes in sbcl-1.2.6 relative to sbcl-1.2.5:
* 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.
(lp#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. (lp#1049423)
* bug fix: HANDLER-BIND with empty bindings works again; regression in
1.2.5. (lp#1388707)
* bug fix: ATOMIC-INCF works on structure slots in interpreted code.
(lp#1381867)
* bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
(member #\a #\c). (lp#1392068)
* bug fix: READ sometimes accidentally preserved a whitespace character
after a token when it should not have. (lp#327790)
changes in sbcl-1.2.5 relative to sbcl-1.2.4:
* 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.
(lp#1364413, thanks to Zach Beane)
changes in sbcl-1.2.4 relative to sbcl-1.2.3:
* 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. (lp#721135)
* bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
universal superclass (lp#1332983)
* bug fix: reading an uninterned symbol whose print name has the
syntax of an integer signals an error. (lp#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.
changes in sbcl-1.2.3 relative to sbcl-1.2.2:
* 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.
(lp#1349795)
* bug fix: macroexpanding a backquoted expression involving ",."
outside of the compiler failed. (lp#1354623)
changes in sbcl-1.2.2 relative to sbcl-1.2.1:
* 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. (lp#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. (lp#1319452).
* bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
(lp#1098355)
changes in sbcl-1.2.1 relative to sbcl-1.2.0:
* enhancement: GENCGC is enabled on ARM.
* enhancement: better error reporting for invalid calls to local functions.
* enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
to Christoph Egger)
* enhancement: experimental support for threads on NetBSD/x86-64. (thanks
to Robert Swindells)
* enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
Postnicov)
* bug fix: TYPE-OF must not return AND/OR/NOT expressions.
(lp#1317308)
* bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
* bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
* bug fix: compiling SVREF on unknown types no longer produces scary errors.
(lp#1258716)
* bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
lp#700538, lp#613876, lp#695286, lp#798388)
* bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
* bug fix: array type intersection handles T and unknown element types
correctly. (lp#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.
(lp#1310574)
* bug fix: when DECLARE expressions are in the wrong place, be careful not
to attempt to evaluate the subforms. (lp#573747; thanks to Roman
Marynchak)
* bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
* bug fix: FBOUNDP returned NIL for a class of incorrect function names
instead of signaling an error. (lp#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. (lp#1327008)
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