libavcodec/hevc.c:1121: error: Uninitialized Value
  The value read from significant_coeff_flag_idx[_] was never initialized.

libavcodec/hevc.c:1121:17: 
1119. 
1120.             for (m = 0; m < n_end; m++) {
1121.                 n = significant_coeff_flag_idx[m];
                      ^
1122.                 GET_COORD(offset, n);
1123.                 trans_coeff_level = 1 + coeff_abs_level_greater1_flag[n];
