Libpng 1.6.23 - June 9, 2016 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-1.6.23.tar.xz (LZMA-compressed, recommended) libpng-1.6.23.tar.gz Source files with CRLF line endings (for Windows), without the "configure" script lpng1623.7z (LZMA-compressed, recommended) lpng1623.zip Other information: libpng-1.6.23-README.txt libpng-1.6.23-LICENSE.txt libpng-1.6.23-*.asc (armored detached GPG signatures) Changes since the last public release (1.6.22): Stop a potential memory leak in png_set_tRNS() (Bug report by Ted Ying). Fixed the progressive reader to handle empty first IDAT chunk properly (patch by Timothy Nikkel). This bug was introduced in libpng-1.6.0 and only affected the libpng16 branch. Added tests in pngvalid.c to check zero-length IDAT chunks in various positions. Fixed the sequential reader to handle these more robustly (John Bowler). Corrected progressive read input buffer in pngvalid.c. The previous version the code invariably passed just one byte at a time to libpng. The intent was to pass a random number of bytes in the range 0..511. Moved sse2 prototype from pngpriv.h to contrib/intel/intel_sse.patch. Added missing ")" in pngerror.c (Matt Sarrett). Fixed undefined behavior in png_push_save_buffer(). Do not call memcpy() with a null source, even if count is zero (Leon Scroggins III). Fixed bad link to RFC2083 in png.5 (Nikola Forro). (subscription required; visit https://lists.sourceforge.net/lists/listinfo/png-mng-implement to subscribe) or to glennrp at users.sourceforge.net Glenn R-P