Fixes: 1401/clusterfuzz-testcase-minimized-6526248148795392
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
a4 = (W0 * b[8 * 0] - W0 * b[8 * 4] ) >> 3;
/* step 2 */
- s1 = (181 * (a1 - a5 + a7 - a3) + 128) >> 8;
- s2 = (181 * (a1 - a5 - a7 + a3) + 128) >> 8;
+ s1 = (int)(181U * (a1 - a5 + a7 - a3) + 128) >> 8;
+ s2 = (int)(181U * (a1 - a5 - a7 + a3) + 128) >> 8;
/* step 3 */
b[8 * 0] = (a0 + a2 + a1 + a5 + (1 << 13)) >> 14;