Fixes: left shift of negative value -1
Fixes: 18859/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_XA_fuzzer-5748474213040128
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
d = in[16+i+j*4];
t = sign_extend(d, 4);
- s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
+ s = t*(1<<shift) + ((s_1*f0 + s_2*f1+32)>>6);
s_2 = s_1;
s_1 = av_clip_int16(s);
out0[j] = s_1;
d = in[16+i+j*4];
t = sign_extend(d >> 4, 4);
- s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
+ s = t*(1<<shift) + ((s_1*f0 + s_2*f1+32)>>6);
s_2 = s_1;
s_1 = av_clip_int16(s);
out1[j] = s_1;