libavcodec/flac.c:376: error: Uninitialized Value
  The value read from coeffs[_] was never initialized.

libavcodec/flac.c:376:13: 
374.                 s1 += c*d;
375.             }
376.             c = coeffs[0];
                 ^
377.             s0 += c*d;
378.             d = decoded[i] += s0 >> qlevel;
