libavcodec/h264_mvpred.h:621: error: Buffer Overrun L1
  Offset: -8 Size: 40.

libavcodec/h264_mvpred.h:439:1: <Length trace>
437. }
438. 
439. static void fill_decode_caches(H264Context *h, int mb_type)
     ^
440. {
441.     int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];

libavcodec/h264_mvpred.h:439:1: Parameter `h->ref_cache[*][*]`
437. }
438. 
439. static void fill_decode_caches(H264Context *h, int mb_type)
     ^
440. {
441.     int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];

libavcodec/h264_mvpred.h:604:13: Assignment
602.         int b_stride = h->b_stride;
603.         for (list = 0; list < h->list_count; list++) {
604.             int8_t *ref_cache = &h->ref_cache[list][scan8[0]];
                 ^
605.             int8_t *ref       = h->cur_pic.ref_index[list];
606.             int16_t(*mv_cache)[2] = &h->mv_cache[list][scan8[0]];

libavcodec/h264_mvpred.h:621:17: Array access: Offset: -8 Size: 40
619.             } else {
620.                 AV_ZERO128(mv_cache[0 - 1 * 8]);
621.                 AV_WN32A(&ref_cache[0 - 1 * 8],
                     ^
622.                          ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE) & 0xFF) * 0x01010101u);
623.             }
