| Libpng 1.6.21beta04 - December 29, 2015 |
| |
| 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 |
| |
| 1.6.21beta04.tar.xz (LZMA-compressed, recommended) |
| 1.6.21beta04.tar.gz |
| |
| Source files with CRLF line endings (for Windows), without the |
| "configure" script |
| |
| /scratch/glennrp/Libpng16/lp1621b04.7z (LZMA-compressed, recommended) |
| /scratch/glennrp/Libpng16/lp1621b04.zip |
| |
| Other information: |
| |
| 1.6.21beta04-README.txt |
| 1.6.21beta04-LICENSE.txt |
| libpng-1.6.21beta04-*.asc (armored detached GPG signatures) |
| |
| Changes since the last public release (1.6.20): |
| |
| Version 1.6.21beta01 [December 11, 2015] |
| Fixed syntax "$(command)" in tests/pngstest that some shells other than |
| bash could not parse (Bug report by Nelson Beebe). Use `command` instead. |
| |
| Version 1.6.21beta02 [December 14, 2015] |
| Moved png_check_keyword() from pngwutil.c to pngset.c |
| Removed LE/BE dependencies in pngvalid, to 'fix' the current problem |
| in the BigEndian tests by not testing it, making the BE code the same |
| as the LE version. |
| Fixes to pngvalid for various reduced build configurations (eliminate unused |
| statics) and a fix for the case in rgb_to_gray when the digitize option |
| reduces graylo to 0, producing a large error. |
| |
| Version 1.6.21beta03 [December 18, 2015] |
| Widened the 'limit' check on the internally calculated error limits in |
| the 'DIGITIZE' case (the code used prior to 1.7 for rgb_to_gray error |
| checks) and changed the check to only operate in non-release builds |
| (base build type not RC or RELEASE.) |
| Fixed undefined behavior in pngvalid.c, undefined because |
| (png_byte) << shift is undefined if it changes the signed bit |
| (because png_byte is promoted to int). The libpng exported functions |
| png_get_uint_32 and png_get_uint_16 handle this. (Bug reported by |
| David Drysdale as a result of reports from UBSAN in clang 3.8). |
| This changes pngvalid to use BE random numbers; this used to produce |
| errors but these should not be fixed as a result of the previous changes. |
| |
| Version 1.6.21beta04 [December 29, 2015] |
| In projects/vstudio, combined readme.txt and WARNING into README.txt |
| |
| Send comments/corrections/commendations to png-mng-implement at lists.sf.net |
| (subscription required; visit |
| https://lists.sourceforge.net/lists/listinfo/png-mng-implement |
| to subscribe) |
| or to glennrp at users.sourceforge.net |
| |
| Glenn R-P |