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changes in sbcl-1.5.6 relative to sbcl-1.5.5:
  * 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. (lp#1838442)
  * bug fix: compliant redefinition of classes whose previous definition
    caused argument mismatch errors does not generate errors any more.
    (lp#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.  (lp#1838267)
    - provide out-of-line definitions for internal machinery related to
      FLOAT-SIGN.  (lp#1838337)
    - include COMPLEX in the derived type of SIGNUM when appropriate.
      (lp#1838333)
    - more correct internal type testing for function types.  (lp#1838808,
      lp#1838888, lp#1838986)
    - don't assume that all objects of type (NOT SIMPLE-ARRAY) have an array
      header.  (lp#1838827)
    - recognize that PHASE on non-positive numbers can return 0 as well as PI.
      (lp#1838892)

sbcl Debian release 2:1.5.5-2

sbcl Debian release 2:1.5.5-1

Upstream version 1.5.5

changes in sbcl-1.5.5 relative to sbcl-1.5.4:
  * platform support:
    - SunOS: bug reports and patches from Richard Lowe in sb-posix tests
      (lp#1837495), sb-concurrency tests (lp#1837817), unencapsulated tracing
      (lp#1837307), float registers in interrupt contexts (lp#1837168)
  * bug fix: do not generate version.lisp-expr from git describe if the git
    repository is not sbcl's own.  (lp#1836663, thanks to Richard Lowe)
  * bug fix: compiler crash related to VALUES-LIST on a &REST argument in some
    contexts.  (lp#1836096, reported by Samuel Jimenez)
  * bug fix: compiler hang related to constraint propagation.  (lp#1835599,
    reported by Mark Cox)
  * bug fix: the inspector showed the wrong array element type.  (lp#1835934,
    reported by Richard M Kreuter)
  * optimization: numerous improvements to hash table access and rehashing
  * optimization: ASSERT compiles into substantially more compact code.
    (lp#1835221)

sbcl Debian release 2:1.5.4-1

Upstream version 1.5.4

changes in sbcl-1.5.4 relative to sbcl-1.5.3:
  * 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.

sbcl Debian release 2:1.5.3-1

Upstream version 1.5.3

changes in sbcl-1.5.3 relative to sbcl-1.5.2:
  * 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

sbcl Debian release 2:1.5.2-1

Upstream version 1.5.2

changes in sbcl-1.5.2 relative to sbcl-1.5.1:
  * 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

sbcl Debian release 2:1.5.1-1

Upstream version 1.5.1

changes in sbcl-1.5.1 relative to sbcl-1.5.0:
  * 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

sbcl Debian release 2:1.5.0-1

Upstream version 1.5.0

sbcl Debian release 2:1.4.16-2