Libpng 1.5.13 - September 27, 2012

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-1.5.13.tar.xz (LZMA-compressed, recommended)

libpng-1.5.13.tar.gz

libpng-1.5.13.tar.bz2

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

"configure" script

lpng1513.7z (LZMA-compressed, recommended)

lpng1513.zip

Other information:

libpng-1.5.13-README.txt

libpng-1.5.13-LICENSE.txt

Changes since the last public release (1.5.12):

Do not compile PNG_DEPRECATED, PNG_ALLOC and PNG_PRIVATE when __GNUC__ < 3.

Removed references to png_zalloc() and png_zfree() from the manual.

Revised PNG_FP_EXPORT and PNG_FIXED_EXPORT macros to avoid generating

lone semicolons (patch ported from libpng-1.6.0beta11).

Corrected handling of the image array and the row_pointers array in example.c

When png_set_filler is used to strip a filler channel during write, the

code prior to 1.5 would ignore the case where the output required an

alpha channel or when the output was a palettized PNG. In libpng-1.5 the

ignorance was lost and libpng proceeded to strip the channel resulting

in a bad (potential memory overwrite) failure later. This reverts

the behavior to the pre-1.5 state but issues a warning. libpng-1.6 is

expected to issue an error on the erroneous png_set_filler call.

Use png_memset() consistently (pngmem.c contained some bare "memset" calls).

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Glenn R-P