libavcodec/h264pred.c:798: error: Uninitialized Value
  The value read from t7 was never initialized.

libavcodec/h264pred.c:798:5: 
796. {
797.     PREDICT_8x8_LOAD_TOP;
798.     const uint32_t dc = ((t0+t1+t2+t3+t4+t5+t6+t7+4) >> 3) * 0x01010101;
         ^
799.     PREDICT_8x8_DC(dc);
800. }
