libavcodec/mpegaudiodec.c:1098: error: Uninitialized Value
  The value read from tmp[_] was never initialized.

libavcodec/mpegaudiodec.c:1098:9: 
1096. 
1097.         t2 = tmp[i + 1];
1098.         t3 = tmp[i + 3];
              ^
1099.         s1 = MULH(2*(t3 + t2), icos36h[j]);
1100.         s3 = MULL(t3 - t2, icos36[8 - j], FRAC_BITS);
