libavcodec/ac3enc_template.c:357: error: Uninitialized Value
  The value read from block0 was never initialized.

libavcodec/ac3enc_template.c:357:5: 
355.     int nb_coefs;
356.     int blk, bnd, i;
357.     AC3Block *block, *av_uninit(block0);
         ^
358. 
359.     if (s->channel_mode != AC3_CHMODE_STEREO)
