libavcodec/interplayvideo.c:751: error: Uninitialized Value
  The value read from P[_] was never initialized.

libavcodec/interplayvideo.c:751:21: 
749.                     pixel_ptr[x + 1            ] =
750.                     pixel_ptr[x +     s->stride] =
751.                     pixel_ptr[x + 1 + s->stride] = P[flags & 0x03];
                         ^
752.                 }
753.                 pixel_ptr += s->stride * 2;
