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authorAndreas Rheinhardt <andreas.rheinhardt@outlook.com>2024-03-12 23:58:48 +0100
committerAndreas Rheinhardt <andreas.rheinhardt@outlook.com>2024-03-17 15:10:05 +0100
commit1faafe738d66fc940c7eccc46ba30d000071d264 (patch)
tree6bfe4d4167d9e1ea9d9895ace9143a837b350427 /libavformat/mux.h
parentc3d3f0e697f27a14898e74db4fcffa5b35bcaf94 (diff)
downloadffmpeg-1faafe738d66fc940c7eccc46ba30d000071d264.tar.gz
fftools/ffmpeg_opt: Check before accessing union member
OptionDef.u is only an offset (i.e. its off member) iff OPT_FLAG_OFFSET is true. Otherwise, the pointer arithmetic can be undefined behaviour. UBSan warns about this (on 32bit arches): src/fftools/ffmpeg_opt.c:102:15: runtime error: pointer index expression with base 0xffa4db10 overflowed to 0x56059a50 This commit fixes this by checking for OPT_FLAG_OFFSET first. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Diffstat (limited to 'libavformat/mux.h')
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