libavcodec/atrac1.c:224: error: Uninitialized Value
  The value read from idwls[_] was never initialized.

libavcodec/atrac1.c:224:13: 
222. 
223.             int num_specs = specs_per_bfu[bfu_num];
224.             int word_len  = !!idwls[bfu_num] + idwls[bfu_num];
                 ^
225.             float scale_factor = sf_table[idsfs[bfu_num]];
226.             bits_used += word_len * num_specs; /* add number of bits consumed by current BFU */
