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| author | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2022-05-30 18:26:40 +0200 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2022-05-30 19:49:04 +0200 |
| commit | 415f012359364a77e8394436f222b74a8641a3ee (patch) | |
| tree | c827bb666de89722fae9fff70d1fbf903232fafc /libavcodec/ffv1enc.c | |
| parent | c5b2ddfe18a0fccab25723676b2a0b2c348ccf00 (diff) | |
| download | ffmpeg-415f012359364a77e8394436f222b74a8641a3ee.tar.gz | |
avcodec/ffv1enc: Fix undefined left shifts of negative numbers
Maybe this fixes the FPE encountered here:
https://fate.ffmpeg.org/report.cgi?slot=alpha-debian-qemu-gcc-4.7&time=20220530144951
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Diffstat (limited to 'libavcodec/ffv1enc.c')
| -rw-r--r-- | libavcodec/ffv1enc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c index 311f377b1e..9849082e44 100644 --- a/libavcodec/ffv1enc.c +++ b/libavcodec/ffv1enc.c @@ -143,7 +143,7 @@ static void find_best_state(uint8_t best_state[256][256], uint32_t l2tab[256]; for (i = 1; i < 256; i++) - l2tab[i] = log2(i / 256.0) * ((-1<<31) / 8); + l2tab[i] = -log2(i / 256.0) * ((1U << 31) / 8); for (i = 0; i < 256; i++) { uint64_t best_len[256]; |