src/http/ngx_http_upstream.c:906: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned64 by call to `ngx_http_upstream_finalize_request`.

src/http/ngx_http_upstream.c:906:9: Call
904.                       ngx_resolver_strerror(ctx->state));
905. 
906.         ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
             ^
907.         goto failed;
908.     }

src/http/ngx_http_upstream.c:3296:1: Parameter `r->uri.len`
  3294. 
  3295. 
  3296. static void
        ^
  3297. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
  3298.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:3416:9: Call
  3414.         || rc == NGX_HTTP_CLIENT_CLOSED_REQUEST)
  3415.     {
  3416.         ngx_http_finalize_request(r, rc);
                ^
  3417.         return;
  3418.     }

src/http/ngx_http_request.c:2198:1: Parameter `r->uri.len`
    2196. 
    2197. 
    2198. void
          ^
    2199. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
    2200. {

src/http/ngx_http_request.c:2270:38: Call
    2268.         c->write->handler = ngx_http_request_handler;
    2269. 
    2270.         ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));
                                               ^
    2271.         return;
    2272.     }

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:2551:1: Parameter `r->uri.len`
          2549. 
          2550. 
          2551. ngx_int_t
                ^
          2552. ngx_http_internal_redirect(ngx_http_request_t *r,
          2553.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2581:5: Call
          2579.                    "internal redirect: \"%V?%V\"", uri, &r->args);
          2580. 
          2581.     ngx_http_set_exten(r);
                    ^
          2582. 
          2583.     /* clear the modules contexts */

src/http/ngx_http_core_module.c:1795:1: <LHS trace>
1793. 
1794. 
1795. void
      ^
1796. ngx_http_set_exten(ngx_http_request_t *r)
1797. {

src/http/ngx_http_core_module.c:1795:1: Parameter `r->uri.len`
            1793. 
            1794. 
            1795. void
                  ^
            1796. ngx_http_set_exten(ngx_http_request_t *r)
            1797. {

src/http/ngx_http_core_module.c:1802:10: Binary operation: ([0, +oo] - 1):unsigned64 by call to `ngx_http_upstream_finalize_request` 
            1800.     ngx_str_null(&r->exten);
            1801. 
            1802.     for (i = r->uri.len - 1; i > 1; i--) {
                           ^
            1803.         if (r->uri.data[i] == '.' && r->uri.data[i - 1] != '/') {
            1804. 
