Libpng 1.4.8 - July 7, 2011

This is a public release of libpng, intended for use in production codes.

Files available for download:

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

   libpng-1.4.8.tar.xz (LZMA-compressed, recommended)
   libpng-1.4.8.tar.gz
   libpng-1.4.8.tar.bz2

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

   lpng148.7z (LZMA-compressed, recommended)
   lpng148.zip

Other information:

   libpng-1.4.8-README.txt
   libpng-1.4.8-LICENSE.txt

Changes since the last public release (1.4.7):

  Undef "_ALL_SOURCE" for AIX, to prevent "jmpbuf" from being redefined.
  Copied png_debug macros from pngpriv.h into pngtest.c and removed
    "#include pngpriv.h" from pngtest.c, to avoid setting a bad example.
  Pass "" instead of '\0' to png_default_error() in png_err().  This mistake
    was introduced in libpng-1.2.20beta01.
  Check for up->location !PNG_AFTER_IDAT when writing unknown chunks
    before IDAT.
  Ported bugfix in pngrtran.c from 1.5.3: when expanding a paletted image,
    always expand to RGBA if transparency is present.
  Ported bugfix in pngrtran.c from 1.5.3: Ensure coefficients are OK for
    png_rgb_to_gray_fixed(); check for integer overflow in
    png_set_rgb_to_gray().
  Fixed uninitialized memory read in png_format_buffer() (Bug report by
    Frank Busse, related to CVE-2004-0421).
  Fixed error in "ACCURATE" 16-to-8 scaling (John Bowler).
  Check for sCAL chunk too short.

Send comments/corrections/commendations to glennrp at users.sourceforge.net
or to png-mng-implement at lists.sf.net (subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement).

Glenn R-P