Fixes: runtime error: left shift of 706 by 22 places cannot be represented in type 'int'
See: L_shl() in the reference software
Fixes: 1609/clusterfuzz-testcase-minimized-
5102163007111168
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
int i, shift, seg, seg2, t, val, val_add, x, y;
shift = 16 - p->cur_gain * 2;
int i, shift, seg, seg2, t, val, val_add, x, y;
shift = 16 - p->cur_gain * 2;
- if (shift > 0)
- t = p->sid_gain << shift;
- else
+ if (shift > 0) {
+ if (p->sid_gain == 0) {
+ t = 0;
+ } else if (shift >= 31 || (int32_t)((uint32_t)p->sid_gain << shift) >> shift != p->sid_gain) {
+ if (p->sid_gain < 0) t = INT32_MIN;
+ else t = INT32_MAX;
+ } else
+ t = p->sid_gain << shift;
+ }else
t = p->sid_gain >> -shift;
x = av_clipl_int32(t * (int64_t)cng_filt[0] >> 16);
t = p->sid_gain >> -shift;
x = av_clipl_int32(t * (int64_t)cng_filt[0] >> 16);