libavcodec/vorbis_dec.c:1500: error: Uninitialized Value
  The value read from res_chan[_] was never initialized.

libavcodec/vorbis_dec.c:1500:9: 
1498. 
1499.     for(j=0, ch_floor_ptr=vc->channel_floors;j<vc->audio_channels;++j,ch_floor_ptr+=blocksize/2) {
1500.         ch_res_ptr=vc->channel_residues+res_chan[j]*blocksize/2;
              ^
1501.         vc->dsp.vector_fmul(ch_floor_ptr, ch_res_ptr, blocksize/2);
1502.     }
