libavcodec/lpc.h:132: error: Uninitialized Value
  The value read from gen1[_] was never initialized.

libavcodec/lpc.h:132:5: 
130.     err    = autoc[0];
131.     ref[0] = -gen1[0] / err;
132.     err   +=  gen1[0] * ref[0];
         ^
133.     if (error)
134.         error[0] = err;
