diff options
| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-01-20 20:20:42 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-05-20 04:05:39 +0200 |
| commit | dfe0d907c2258bb9c81b8c65e42cec2b3022d5e8 (patch) | |
| tree | 8f9e31a45247d6af0afedcc7fa132b8307244ed9 /libavformat/webm_chunk.c | |
| parent | 4f17205a510d2d54054f12541c4a209dc76cc197 (diff) | |
| download | ffmpeg-dfe0d907c2258bb9c81b8c65e42cec2b3022d5e8.tar.gz | |
avcodec/adxenc: Avoid undefined left shift of negative numbers
Replace "((a << shift) + b) >> shift" by "a + (b >> shift)". This avoids
a left shift which also happens to trigger undefined behaviour in case "a"
is negative. This affected the FATE-tests acodec-adpcm-adx and
acodec-adpcm-adx-trellis; it also fixes ticket #8008.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 59a9d65e0d790821f88527a82569f56eb2f8a9be)
Diffstat (limited to 'libavformat/webm_chunk.c')
0 files changed, 0 insertions, 0 deletions