John Bowler bd0bb3ca7f Fix 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.

Signed-off-by: John Bowler <jbowler@acm.org>

2015-12-17 12:58:36 -08:00

..

fakepng.c

[libpng17] Merge contrib/libtests and contrib/tools with libpng16.

2015-09-15 17:11:43 -05:00

gentests.sh

[libpng17] Merged files with version 1.6.8 that have not changed since then.

2013-12-19 20:33:08 -06:00

makepng.c

contrib space removal

2015-11-26 09:55:37 -08:00

pngimage.c

Backward compatibility with 1.6

2015-11-23 18:14:57 -08:00

pngstest-errors.h

[libng17] Updated CHANGES and ANNOUNCE, restored license info in

2015-09-25 17:40:48 -05:00

pngstest.c

contrib space removal

2015-11-26 09:55:37 -08:00

pngunknown.c

pngunknown fix for multiple IDAT chunks

2015-11-28 08:42:54 -08:00

pngvalid.c

Fix undefined behavior in pngvalid.c

2015-12-17 12:58:36 -08:00

readpng.c

[libpng17] Fix CMINFO bug in contrib/tools/pngfix.c

2015-11-25 16:03:47 -06:00

tarith.c

[libpng17] Merge contrib/libtests and contrib/tools with libpng16.

2015-09-15 17:11:43 -05:00

timepng.c

[libpng17] Merged files with version 1.6.8 that have not changed since then.

2013-12-19 20:33:08 -06:00