src/http/ngx_http_core_module.c:4701: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned64 by call to `ngx_parse_offset`.

src/http/ngx_http_core_module.c:4701:22: Call
4699.     }
4700. 
4701.     clcf->directio = ngx_parse_offset(&value[1]);
                           ^
4702.     if (clcf->directio == (off_t) NGX_ERROR) {
4703.         return "invalid value";

src/core/ngx_parse.c:53:1: <LHS trace>
51. 
52. 
53. off_t
    ^
54. ngx_parse_offset(ngx_str_t *line)
55. {

src/core/ngx_parse.c:53:1: Parameter `line->len`
  51. 
  52. 
  53. off_t
      ^
  54. ngx_parse_offset(ngx_str_t *line)
  55. {

src/core/ngx_parse.c:60:5: Assignment
  58.     size_t  len;
  59. 
  60.     len = line->len;
          ^
  61.     unit = line->data[len - 1];
  62. 

src/core/ngx_parse.c:61:12: Binary operation: ([0, +oo] - 1):unsigned64 by call to `ngx_parse_offset` 
  59. 
  60.     len = line->len;
  61.     unit = line->data[len - 1];
                 ^
  62. 
  63.     switch (unit) {
