src/http/ngx_http_upstream.c:1020: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned64 by call to `ngx_http_upstream_finalize_request`.

src/http/ngx_http_upstream.c:1020:9: Call
1018.                       ngx_resolver_strerror(ctx->state));
1019. 
1020.         ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
              ^
1021.         goto failed;
1022.     }

src/http/ngx_http_upstream.c:3923:1: Parameter `r->uri.len`
  3921. 
  3922. 
  3923. static void
        ^
  3924. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
  3925.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:3934:9: Call
  3932.     if (u->cleanup == NULL) {
  3933.         /* the request was already finalized */
  3934.         ngx_http_finalize_request(r, NGX_DONE);
                ^
  3935.         return;
  3936.     }

src/http/ngx_http_request.c:2249:1: Parameter `r->uri.len`
    2247. 
    2248. 
    2249. void
          ^
    2250. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
    2251. {

src/http/ngx_http_request.c:2321:38: Call
    2319.         c->write->handler = ngx_http_request_handler;
    2320. 
    2321.         ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));
                                               ^
    2322.         return;
    2323.     }

src/http/ngx_http_special_response.c:365:1: Parameter `r->uri.len`
      363. 
      364. 
      365. ngx_int_t
           ^
      366. ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error)
      367. {

src/http/ngx_http_special_response.c:416:24: Call
      414.         for (i = 0; i < clcf->error_pages->nelts; i++) {
      415.             if (err_page[i].status == error) {
      416.                 return ngx_http_send_error_page(r, &err_page[i]);
                                  ^
      417.             }
      418.         }

src/http/ngx_http_special_response.c:534:1: Parameter `r->uri.len`
        532. 
        533. 
        534. static ngx_int_t
             ^
        535. ngx_http_send_error_page(ngx_http_request_t *r, ngx_http_err_page_t *err_page)
        536. {

src/http/ngx_http_special_response.c:570:16: Call
        568.         }
        569. 
        570.         return ngx_http_internal_redirect(r, &uri, &args);
                            ^
        571.     }
        572. 

src/http/ngx_http_core_module.c:2549:1: Parameter `r->uri.len`
          2547. 
          2548. 
          2549. ngx_int_t
                ^
          2550. ngx_http_internal_redirect(ngx_http_request_t *r,
          2551.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2579:5: Call
          2577.                    "internal redirect: \"%V?%V\"", uri, &r->args);
          2578. 
          2579.     ngx_http_set_exten(r);
                    ^
          2580. 
          2581.     /* clear the modules contexts */

src/http/ngx_http_core_module.c:1746:1: <LHS trace>
1744. 
1745. 
1746. void
      ^
1747. ngx_http_set_exten(ngx_http_request_t *r)
1748. {

src/http/ngx_http_core_module.c:1746:1: Parameter `r->uri.len`
            1744. 
            1745. 
            1746. void
                  ^
            1747. ngx_http_set_exten(ngx_http_request_t *r)
            1748. {

src/http/ngx_http_core_module.c:1753:10: Binary operation: ([0, +oo] - 1):unsigned64 by call to `ngx_http_upstream_finalize_request` 
            1751.     ngx_str_null(&r->exten);
            1752. 
            1753.     for (i = r->uri.len - 1; i > 1; i--) {
                           ^
            1754.         if (r->uri.data[i] == '.' && r->uri.data[i - 1] != '/') {
            1755. 
