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avutil/common: Fix integer overflow in av_clip_uint8_c() and av_clip_uint16_c()
Fixes: 5567/clusterfuzz-testcase-minimized-5769966247739392 Fixes: runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit ab6f571ef71967da7c7c1cfba483d3597c7357d5) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -162,7 +162,7 @@ static av_always_inline av_const int64_t av_clip64_c(int64_t a, int64_t amin, in
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*/
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static av_always_inline av_const uint8_t av_clip_uint8_c(int a)
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{
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if (a&(~0xFF)) return (-a)>>31;
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if (a&(~0xFF)) return (~a)>>31;
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else return a;
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}
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@ -184,7 +184,7 @@ static av_always_inline av_const int8_t av_clip_int8_c(int a)
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*/
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static av_always_inline av_const uint16_t av_clip_uint16_c(int a)
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{
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if (a&(~0xFFFF)) return (-a)>>31;
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if (a&(~0xFFFF)) return (~a)>>31;
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else return a;
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}
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