modules/http/http_filters.c:424: error: INTEGER_OVERFLOW_L2
  ([1, 64] - 4):unsigned64.

modules/http/http_filters.c:401:5: <LHS trace>
399. {
400.     long chunksize = 0;
401.     size_t chunkbits = sizeof(long) * 8;
         ^
402. 
403.     ap_xlate_proto_from_ascii(b, strlen(b));

modules/http/http_filters.c:401:5: Assignment
399. {
400.     long chunksize = 0;
401.     size_t chunkbits = sizeof(long) * 8;
         ^
402. 
403.     ap_xlate_proto_from_ascii(b, strlen(b));

modules/http/http_filters.c:424:9: Binary operation: ([1, 64] - 4):unsigned64
422. 
423.         chunksize = (chunksize << 4) | xvalue;
424.         chunkbits -= 4;
             ^
425.         ++b;
426.     }
