libavcodec/interplayvideo.c:776: error: Uninitialized Value
  The value read from P[_] was never initialized.

libavcodec/interplayvideo.c:776:21: 
774.                 for (x = 0; x < 8; x++, flags >>= 2) {
775.                     pixel_ptr[x            ] =
776.                     pixel_ptr[x + s->stride] = P[flags & 0x03];
                         ^
777.                 }
778.                 pixel_ptr += s->stride * 2;
