src/http/ngx_http_upstream.c:812: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned64 by call to `ngx_http_upstream_finalize_request`.

src/http/ngx_http_upstream.c:812:9: Call
810.                       ngx_resolver_strerror(ctx->state));
811. 
812.         ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
             ^
813.         return;
814.     }

src/http/ngx_http_upstream.c:2843:1: Parameter `r->uri.len`
  2841. 
  2842. 
  2843. static void
        ^
  2844. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
  2845.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:2952:5: Call
  2950.     }
  2951. 
  2952.     ngx_http_finalize_request(r, rc);
            ^
  2953. }
  2954. 

src/http/ngx_http_request.c:1847:1: Parameter `r->uri.len`
    1845. 
    1846. 
    1847. void
          ^
    1848. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
    1849. {

src/http/ngx_http_request.c:1920:38: Call
    1918.         c->write->handler = ngx_http_request_handler;
    1919. 
    1920.         ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));
                                               ^
    1921.         return;
    1922.     }

src/http/ngx_http_special_response.c:333:1: Parameter `r->uri.len`
      331. 
      332. 
      333. ngx_int_t
           ^
      334. ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error)
      335. {

src/http/ngx_http_special_response.c:383:24: Call
      381.         for (i = 0; i < clcf->error_pages->nelts; i++) {
      382.             if (err_page[i].status == error) {
      383.                 return ngx_http_send_error_page(r, &err_page[i]);
                                  ^
      384.             }
      385.         }

src/http/ngx_http_special_response.c:504:1: Parameter `r->uri.len`
        502. 
        503. 
        504. static ngx_int_t
             ^
        505. ngx_http_send_error_page(ngx_http_request_t *r, ngx_http_err_page_t *err_page)
        506. {

src/http/ngx_http_special_response.c:540:16: Call
        538.         }
        539. 
        540.         return ngx_http_internal_redirect(r, &uri, &args);
                            ^
        541.     }
        542. 

src/http/ngx_http_core_module.c:2172:1: Parameter `r->uri.len`
          2170. 
          2171. 
          2172. ngx_int_t
                ^
          2173. ngx_http_internal_redirect(ngx_http_request_t *r,
          2174.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2203:5: Call
          2201.                    "internal redirect: \"%V?%V\"", uri, &r->args);
          2202. 
          2203.     ngx_http_set_exten(r);
                    ^
          2204. 
          2205.     /* clear the modules contexts */

src/http/ngx_http_core_module.c:1681:1: <LHS trace>
1679. 
1680. 
1681. void
      ^
1682. ngx_http_set_exten(ngx_http_request_t *r)
1683. {

src/http/ngx_http_core_module.c:1681:1: Parameter `r->uri.len`
            1679. 
            1680. 
            1681. void
                  ^
            1682. ngx_http_set_exten(ngx_http_request_t *r)
            1683. {

src/http/ngx_http_core_module.c:1689:10: Binary operation: ([0, +oo] - 1):unsigned64 by call to `ngx_http_upstream_finalize_request` 
            1687.     r->exten.data = NULL;
            1688. 
            1689.     for (i = r->uri.len - 1; i > 1; i--) {
                           ^
            1690.         if (r->uri.data[i] == '.' && r->uri.data[i - 1] != '/') {
            1691. 
