Log message:
Update to 2.1.10.

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)

Log message:
lang: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

The following distfiles could not be fetched (possibly fetched
conditionally?):

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./lang/go-bin/distinfo go1.14.2.linux-arm64.tar.gz
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./lang/ghc88/distinfo ghc-8.4.4-boot-x86_64-apple-darwin.tar.xz
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./lang/sun-jdk7/distinfo jdk-7u80-linux-x64.tar.gz
./lang/sun-jdk7/distinfo jdk-7u80-solaris-i586.tar.gz
./lang/sun-jdk7/distinfo jdk-7u80-solaris-x64.tar.gz

Log message:
lang: Remove SHA1 hashes for distfiles

Log message:
Update to 2.1.7.

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)

Log message:
Update to 2.1.5.

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.

Log message:
Update to version 2.1.4.

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;

Log message:
Update to version 2.1.0.

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)

Log message:
sbcl: remove patches that were removed from distinfo during 2.0.7 update

While here, clean up some pkglint

Log message:
Update to version 2.0.7.

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)

Log message:
sbcl: Default to C99 compile environment on SunOS.