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avcodec/osq: avoid undefined negation

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Fixes: negation of -2147483648 cannot be represented in type 'int32_t' (aka 'int'); cast to an unsigned type to negate this value to itself
Fixes: 390646659/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-5040277374435328

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
2025-02-04 03:58:45 +01:00
parent d16a058dbc
commit c6a889f3e0
1 changed files with 1 additions and 1 deletions
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libavcodec/osq.c
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@ -190,7 +190,7 @@ static uint32_t get_urice(GetBitContext *gb, int k)
static int32_t get_srice(GetBitContext *gb, int x) static int32_t get_srice(GetBitContext *gb, int x)
{ {
int32_t y = get_urice(gb, x); uint32_t y = get_urice(gb, x);
return get_bits1(gb) ? -y : y; return get_bits1(gb) ? -y : y;
} }