ANNOUNCE

Libpng 1.5.7beta01 - November 4, 2011

This is not intended to be a public release.  It will be replaced
within a few weeks by a public version or by another test version.

Files available for download:

Source files with LF line endings (for Unix/Linux) and with a
"configure" script

   1.5.7beta01.tar.xz (LZMA-compressed, recommended)
   1.5.7beta01.tar.gz
   1.5.7beta01.tar.bz2

Source files with CRLF line endings (for Windows), without the
"configure" script

   lp157b01.7z  (LZMA-compressed, recommended)
   lp157b01.zip

Other information:

   1.5.7beta01-README.txt
   1.5.7beta01-LICENSE.txt

Changes since the last public release (1.5.6):

Version 1.5.7beta01 [November 4, 2011]
  Added support for ARM processor (Mans Rullgard)
  Fixed bug in pngvalid on early allocation failure; fixed type cast in
    pngmem.c; pngvalid would attempt to call png_error() if the allocation
    of a png_struct or png_info failed. This would probably have led to a
    crash.  The pngmem.c implementation of png_malloc() included a cast
    to png_size_t which would fail on large allocations on 16-bit systems.
  Fix for the preprocessor of the Intel C compiler. The preprocessor
    splits adjacent @ signs with a space; this changes the concatentation
    token from @@@ to PNG_JOIN; that should work with all compiler
    preprocessors.
  Paeth filter speed improvements from work by Siarhei Siamashka. This
    changes the 'Paeth' reconstruction function to improve the GCC code
    generation on x86. The changes are only part of the suggested ones;
    just the changes that definitely improve speed and remain simple.
    The changes also slightly increase the clarity of the code. In a


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Glenn R-P