libavcodec/flac.c:386: error: Uninitialized Value
  The value read from coeffs[_] was never initialized.

libavcodec/flac.c:386:17: 
384.             int sum = 0;
385.             for (j = 0; j < pred_order; j++)
386.                 sum += coeffs[j] * decoded[i-j-1];
                     ^
387.             decoded[i] += sum >> qlevel;
388.         }
