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avcodec/truemotion2: Fix runtime error: left shift of 1 by 31 places cannot be represented in type 'int'

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Fixes part of: 1888/clusterfuzz-testcase-minimized-5237704826552320

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2017-05-28 21:54:02 +02:00
parent 7c845450d2
commit c9e884f3d9
1 changed files with 1 additions and 1 deletions
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2
libavcodec/truemotion2.c
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@@ -272,7 +272,7 @@ static int tm2_read_deltas(TM2Context *ctx, int stream_id)
for (i = 0; i < d; i++) { for (i = 0; i < d; i++) {
v = get_bits_long(&ctx->gb, mb); v = get_bits_long(&ctx->gb, mb);
if (v & (1 << (mb - 1))) if (v & (1 << (mb - 1)))
ctx->deltas[stream_id][i] = v - (1 << mb); ctx->deltas[stream_id][i] = v - (1U << mb);
else else
ctx->deltas[stream_id][i] = v; ctx->deltas[stream_id][i] = v;
} }