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avcodec/h264_cabac: Fix runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself

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Fixes: 858/clusterfuzz-testcase-5168477042114560

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-03-15 03:48:59 +01:00
parent 2898bc522d
commit a3a4082599
1 changed files with 1 additions and 1 deletions
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2
libavcodec/h264_cabac.c
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@ -1725,7 +1725,7 @@ decode_cabac_residual_internal(const H264Context *h, H264SliceContext *sl,
((type*)block)[j] = (get_cabac_bypass_sign( CC, -qmul[j]) + 32) >> 6; \
} \
} else { \
int coeff_abs = 2; \
unsigned coeff_abs = 2; \
ctx = coeff_abs_levelgt1_ctx[is_dc && chroma422][node_ctx] + abs_level_m1_ctx_base; \
node_ctx = coeff_abs_level_transition[1][node_ctx]; \
\