Fixes: left shift of negative value -1
Fixes: 17683/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_EA_R2_fuzzer-5111690013704192
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
for (count2=0; count2<28; count2++) {
if (count2 & 1)
- next_sample = sign_extend(byte, 4) << shift;
+ next_sample = (unsigned)sign_extend(byte, 4) << shift;
else {
byte = bytestream2_get_byte(&gb);
- next_sample = sign_extend(byte >> 4, 4) << shift;
+ next_sample = (unsigned)sign_extend(byte >> 4, 4) << shift;
}
next_sample += (current_sample * coeff1) +