src/http/ngx_http_upstream.c:606: error: Integer Overflow L2
  ([0, `r->uri.len`] - 1):unsigned64 by call to `ngx_http_upstream_connect`.

src/http/ngx_http_upstream.c:479:1: Parameter `r->uri.len`
477. 
478. 
479. static void
     ^
480. ngx_http_upstream_init_request(ngx_http_request_t *r)
481. {

src/http/ngx_http_upstream.c:606:13: Call
604.             }
605. 
606.             ngx_http_upstream_connect(r, u);
                 ^
607. 
608.             return;

src/http/ngx_http_upstream.c:1197:1: Parameter `r->uri.len`
  1195. 
  1196. 
  1197. static void
        ^
  1198. ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
  1199. {

src/http/ngx_http_upstream.c:1240:9: Call
  1238.     if (rc == NGX_BUSY) {
  1239.         ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
  1240.         ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
                ^
  1241.         return;
  1242.     }

src/http/ngx_http_upstream.c:3398:1: Parameter `r->uri.len`
    3396. 
    3397. 
    3398. static void
          ^
    3399. ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
    3400.     ngx_uint_t ft_type)

src/http/ngx_http_upstream.c:3464:9: Call
    3462. 
    3463.     if (r->connection->error) {
    3464.         ngx_http_upstream_finalize_request(r, u,
                  ^
    3465.                                            NGX_HTTP_CLIENT_CLOSED_REQUEST);
    3466.         return;

src/http/ngx_http_upstream.c:3536:1: Parameter `r->uri.len`
      3534. 
      3535. 
      3536. static void
            ^
      3537. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
      3538.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:3675:9: Call
      3673. 
      3674.     if (r->header_only) {
      3675.         ngx_http_finalize_request(r, rc);
                    ^
      3676.         return;
      3677.     }

src/http/ngx_http_request.c:2251:1: Parameter `r->uri.len`
        2249. 
        2250. 
        2251. void
              ^
        2252. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
        2253. {

src/http/ngx_http_request.c:2323:38: Call
        2321.         c->write->handler = ngx_http_request_handler;
        2322. 
        2323.         ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));
                                                   ^
        2324.         return;
        2325.     }

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:2561:1: Parameter `r->uri.len`
              2559. 
              2560. 
              2561. ngx_int_t
                    ^
              2562. ngx_http_internal_redirect(ngx_http_request_t *r,
              2563.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2591:5: Call
              2589.                    "internal redirect: \"%V?%V\"", uri, &r->args);
              2590. 
              2591.     ngx_http_set_exten(r);
                        ^
              2592. 
              2593.     /* clear the modules contexts */

src/http/ngx_http_core_module.c:1797:1: <LHS trace>
1795. 
1796. 
1797. void
      ^
1798. ngx_http_set_exten(ngx_http_request_t *r)
1799. {

src/http/ngx_http_core_module.c:1797:1: Parameter `r->uri.len`
                1795. 
                1796. 
                1797. void
                      ^
                1798. ngx_http_set_exten(ngx_http_request_t *r)
                1799. {

src/http/ngx_http_core_module.c:1804:10: Binary operation: ([0, r->uri.len] - 1):unsigned64 by call to `ngx_http_upstream_connect` 
                1802.     ngx_str_null(&r->exten);
                1803. 
                1804.     for (i = r->uri.len - 1; i > 1; i--) {
                               ^
                1805.         if (r->uri.data[i] == '.' && r->uri.data[i - 1] != '/') {
                1806. 
