Libpng 1.4.22 - September 28, 2017

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-1.4.22.tar.xz (LZMA-compressed, recommended)
   libpng-1.4.22.tar.gz

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

   lpng1422.7z (LZMA-compressed, recommended)
   lpng1422.zip

Other information:

   libpng-1.4.22-README.txt
   libpng-1.4.22-LICENSE.txt
   libpng-1.4.22-*.asc (armored detached GPG signatures)

Changes since the last public release (1.4.21):
  Added PNGMINUS_UNUSED macro to contrib/pngminus/p*.c and added missing
    parenthesis in contrib/pngminus/pnm2png.c (bug report by Christian Hesse).
  Compute a larger limit on IDAT because some applications write a deflate
    buffer for each row (Bug report by Andrew Church).
  Fixed incorrect typecast of some arguments to png_malloc() and
    png_calloc() that were png_uint_32 instead of png_alloc_size_t
    (Bug report by "irwir" in Github libpng issue #175).
  Initialize memory allocated by png_inflate to zero, using memset, to
    stop an oss-fuzz "use of uninitialized value" detection in png_set_text_2()
    due to truncated iTXt or zTXt chunk.

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