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author | Vitaly Buka <vitalybuka-at-google.com@ffmpeg.org> | 2017-08-20 11:56:47 -0700 |
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committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-17 12:21:32 +0200 |
commit | febea34f914b10e2aed177f49bfd6e9da9be5bef (patch) | |
tree | 6477d26da738ea75df55d66580fb2390a4afbe3b | |
parent | 6da5e63ba71de2dc3db547b4f56b67ce28548bdc (diff) | |
download | ffmpeg-febea34f914b10e2aed177f49bfd6e9da9be5bef.tar.gz |
avcodec/utils: Fix signed integer overflow in rc_initial_buffer_occupancy initialization
Signed integer overflow is undefined behavior.
Detected with clang and -fsanitize=signed-integer-overflow
Signed-off-by: Vitaly Buka <vitalybuka@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 8c2bb10ddfef1f151b9455d152c9aca91140a4b0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r-- | libavcodec/utils.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/utils.c b/libavcodec/utils.c index 2d57aea469..6d6bbb7c22 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -1570,7 +1570,7 @@ FF_ENABLE_DEPRECATION_WARNINGS } if (!avctx->rc_initial_buffer_occupancy) - avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4; + avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4; if (avctx->ticks_per_frame && avctx->time_base.num && avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) { |