libavcodec/mpeg12.c:1904: error: Integer Overflow L1
  ([1099511627520, +oo] + [0, +oo]):unsigned32 by call to `avpriv_find_start_code`.

libavcodec/mpeg12.c:1903:9: Assignment
1901.             return 0;
1902. 
1903.         start_code = -1;
              ^
1904.         buf = avpriv_find_start_code(buf, s->gb.buffer_end, &start_code);
1905.         mb_y= (start_code - SLICE_MIN_START_CODE) << field_pic;

libavcodec/mpeg12.c:1904:15: Call
1902. 
1903.         start_code = -1;
1904.         buf = avpriv_find_start_code(buf, s->gb.buffer_end, &start_code);
                    ^
1905.         mb_y= (start_code - SLICE_MIN_START_CODE) << field_pic;
1906.         if (s->picture_structure == PICT_BOTTOM_FIELD)

libavcodec/utils.c:2201:1: <LHS trace>
2199. }
2200. 
2201. const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
      ^
2202.                                       const uint8_t *end,
2203.                                       uint32_t * restrict state)

libavcodec/utils.c:2201:1: Parameter `*state`
  2199. }
  2200. 
  2201. const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
        ^
  2202.                                       const uint8_t *end,
  2203.                                       uint32_t * restrict state)

libavcodec/utils.c:2212:9: Assignment
  2210. 
  2211.     for (i = 0; i < 3; i++) {
  2212.         uint32_t tmp = *state << 8;
                ^
  2213.         *state = tmp + *(p++);
  2214.         if (tmp == 0x100 || p == end)

libavcodec/utils.c:2201:1: <RHS trace>
2199. }
2200. 
2201. const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
      ^
2202.                                       const uint8_t *end,
2203.                                       uint32_t * restrict state)

libavcodec/utils.c:2201:1: Parameter `*p`
  2199. }
  2200. 
  2201. const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
        ^
  2202.                                       const uint8_t *end,
  2203.                                       uint32_t * restrict state)

libavcodec/utils.c:2213:9: Binary operation: ([1099511627520, +oo] + [0, +oo]):unsigned32 by call to `avpriv_find_start_code` 
  2211.     for (i = 0; i < 3; i++) {
  2212.         uint32_t tmp = *state << 8;
  2213.         *state = tmp + *(p++);
                ^
  2214.         if (tmp == 0x100 || p == end)
  2215.             return p;
