modules/http/http_protocol.c:1838: error: INTEGER_OVERFLOW_L2
  ([1, 64] - 4):unsigned64.

modules/http/http_protocol.c:1817:5: <LHS trace>
1815. {
1816.     long chunksize = 0;
1817.     size_t chunkbits = sizeof(long) * 8;
          ^
1818. 
1819.     /* Skip leading zeros */

modules/http/http_protocol.c:1817:5: Assignment
1815. {
1816.     long chunksize = 0;
1817.     size_t chunkbits = sizeof(long) * 8;
          ^
1818. 
1819.     /* Skip leading zeros */

modules/http/http_protocol.c:1838:9: Binary operation: ([1, 64] - 4):unsigned64
1836. 
1837.         chunksize = (chunksize << 4) | xvalue;
1838.         chunkbits -= 4;
              ^
1839.         ++b;
1840.     }
