Libpng 1.6.27rc01 - December 27, 2016

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

   1.6.27rc01.tar.xz (LZMA-compressed, recommended)
   1.6.27rc01.tar.gz

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

   lp1627r01.7z  (LZMA-compressed, recommended)
   lp1627r01.zip

Other information:

   1.6.27rc01-README.txt
   1.6.27rc01-LICENSE.txt
   libpng-1.6.27rc01-*.asc (armored detached GPG signatures)

Changes since the last public release (1.6.26):

Version 1.6.27beta01 [November 2, 2016]
  Restrict the new ADLER32-skipping to IDAT chunks.  It broke iCCP chunk
    handling: an erroneous iCCP chunk would throw a png_error and reject the
    entire PNG image instead of rejecting just the iCCP chunk with a warning,
    if built with zlib-1.2.8.1.

Version 1.6.27rc01 [December 27, 2016]
  Control ADLER32 checking with new PNG_IGNORE_ADLER32 option.
  Removed the use of a macro containing the pre-processor 'defined'
    operator.  It is unclear whether this is valid; a macro that
    "generates" 'defined' is not permitted, but the use of the word
    "generates" within the C90 standard seems to imply more than simple
    substitution of an expression itself containing a well-formed defined
    operation.

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Glenn R-P