Fixes: runtime error: signed integer overflow: -503316480 + -2013265038 cannot be represented in type 'int' Fixes: 3805/clusterfuzz-testcase-minimized-6578427831255040
Unified · Split
| @@ -91,10 +91,10 @@ void FUNCC(ff_h264_idct8_add)(uint8_t *_dst, int16_t *_block, int stride){ · 90 unmodified lines | ||
| 91 | 91 | const int a5 = -block[i+1*8] + (unsigned)block[i+7*8] + block[i+5*8] + (block[i+5*8]>>1); |
| 92 | 92 | const int a7 = block[i+3*8] + (unsigned)block[i+5*8] + block[i+1*8] + (block[i+1*8]>>1); |
| 93 | 93 | |
| 94 | − const int b1 = (a7>>2) + a1; | |
| 95 | − const int b3 = a3 + (a5>>2); | |
| 96 | − const int b5 = (a3>>2) - a5; | |
| 97 | − const int b7 = a7 - (a1>>2); | |
| 94 | + const int b1 = (a7>>2) + (unsigned)a1; | |
| 95 | + const int b3 = (unsigned)a3 + (a5>>2); | |
| 96 | + const int b5 = (a3>>2) - (unsigned)a5; | |
| 97 | + const int b7 = (unsigned)a7 - (a1>>2); | |
| 98 | 98 | |
| 99 | 99 | block[i+0*8] = b0 + b7; |
| 100 | 100 | block[i+7*8] = b0 - b7; |