changes in sbcl-2.1.7 relative to sbcl-2.1.6:

  * 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.  (lp#1928516,
       thanks to Marco Heisig)
  * optimization: the type of (LOOP ... COLLECT ...), and the type of COLLECT
    INTO variables, is derived as LIST.  (lp#1934577, reported by SATO
    shinichi)
-----BEGIN PGP SIGNATURE-----

iQFFBAABCgAvFiEE1oOcoKZ/dNnftwki69WVqRANY80FAmEDu1wRHGNzcjIxQGNh
bnRhYi5uZXQACgkQ69WVqRANY825uAgAoNALA47w2dtEGNUIvESDRF6EZT6Kshjv
VLFnOcwTNiJ5NWfgXVrNG6JHvWWl/9gH+vRqIDAvZHtV4YEkzzKX3wa++T5sgdGA
+WkX7jI/hJe1W0v45yE96+eu+KOFkLGUN+PQGd1CYQ659AsQ8RAsVbSSd0koGPWW
5F+J7hRRl7TA6Yp/qibpR2Rv2ieMxzjBiOPLBvnZN+jBmNup+AsSUi5d2L8ZIWu/
zHgkkXUnrUD8XoIrewESSyh8ZZzEEd/acTu3lVJ4bpHiTjYdiazkhiGKZ3zZLfG/
iftYOsUcglVc/ixrC9eZP6vOjTwpYPefROmlX8jwsu0ZVWti4Q9bJQ==
=5gBM
-----END PGP SIGNATURE-----