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| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-01-20 20:20:42 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-07-01 23:03:43 +0200 |
| commit | 68e67bb187657173354c233edd4db5f81ffdbf80 (patch) | |
| tree | 2c830753438d98b670d9dbd4ccac873b15d1d716 /libavformat/rtpenc_xiph.c | |
| parent | d620f2eeb4087ece55bd70fbd9f3f1665f61e77c (diff) | |
| download | ffmpeg-68e67bb187657173354c233edd4db5f81ffdbf80.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)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Diffstat (limited to 'libavformat/rtpenc_xiph.c')
0 files changed, 0 insertions, 0 deletions