libavcodec/h264.c:1277: error: Buffer Overrun L3
  Offset: [-1, +oo] Size: 16 by call to `decode_nal_units`.

libavcodec/h264.c:1253:1: Parameter `h->slice_context_count`
1251. }
1252. 
1253. int ff_h264_decode_extradata(H264Context *h)
      ^
1254. {
1255.     AVCodecContext *avctx = h->avctx;

libavcodec/h264.c:1277:17: Call
1275.             if (p - avctx->extradata + nalsize > avctx->extradata_size)
1276.                 return -1;
1277.             if (decode_nal_units(h, p, nalsize, 1) < 0) {
                      ^
1278.                 av_log(avctx, AV_LOG_ERROR,
1279.                        "Decoding sps %d from avcC failed\n", i);

libavcodec/h264.c:4221:9: Assignment
  4219.     for (; pass <= 1; pass++) {
  4220.         buf_index     = 0;
  4221.         context_count = 0;
                ^
  4222.         next_avc      = h->is_avc ? 0 : buf_size;
  4223.         nal_index     = 0;

libavcodec/h264.c:4462:17: Call
  4460. 
  4461.             if (context_count == h->max_contexts) {
  4462.                 execute_decode_slices(h, context_count);
                        ^
  4463.                 context_count = 0;
  4464.             }

libavcodec/h264.c:4166:1: <Offset trace>
4164.  * @param context_count number of contexts to execute
4165.  */
4166. static int execute_decode_slices(H264Context *h, int context_count)
      ^
4167. {
4168.     AVCodecContext *const avctx = h->avctx;

libavcodec/h264.c:4166:1: Parameter `context_count`
    4164.  * @param context_count number of contexts to execute
    4165.  */
    4166. static int execute_decode_slices(H264Context *h, int context_count)
          ^
    4167. {
    4168.     AVCodecContext *const avctx = h->avctx;

libavcodec/h264.c:4166:1: <Length trace>
4164.  * @param context_count number of contexts to execute
4165.  */
4166. static int execute_decode_slices(H264Context *h, int context_count)
      ^
4167. {
4168.     AVCodecContext *const avctx = h->avctx;

libavcodec/h264.c:4166:1: Parameter `h->thread_context[*]`
    4164.  * @param context_count number of contexts to execute
    4165.  */
    4166. static int execute_decode_slices(H264Context *h, int context_count)
          ^
    4167. {
    4168.     AVCodecContext *const avctx = h->avctx;

libavcodec/h264.c:4187:32: Array access: Offset: [-1, +oo] Size: 16 by call to `decode_nal_units` 
    4185. 
    4186.         /* pull back stuff from slices to master context */
    4187.         hx                   = h->thread_context[context_count - 1];
                                         ^
    4188.         h->mb_x              = hx->mb_x;
    4189.         h->mb_y              = hx->mb_y;
