src/http/ngx_http_upstream.c:630: error: Integer Overflow L2
  ([0, `r->uri.len`] - 1):unsigned64 by call to `ngx_http_upstream_connect`.

src/http/ngx_http_upstream.c:501:1: Parameter `r->uri.len`
499. 
500. 
501. static void
     ^
502. ngx_http_upstream_init_request(ngx_http_request_t *r)
503. {

src/http/ngx_http_upstream.c:630:13: Call
628.             }
629. 
630.             ngx_http_upstream_connect(r, u);
                 ^
631. 
632.             return;

src/http/ngx_http_upstream.c:1296:1: Parameter `r->uri.len`
  1294. 
  1295. 
  1296. static void
        ^
  1297. ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
  1298. {

src/http/ngx_http_upstream.c:1340:9: Call
  1338.     if (rc == NGX_BUSY) {
  1339.         ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
  1340.         ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
                ^
  1341.         return;
  1342.     }

src/http/ngx_http_upstream.c:3602:1: Parameter `r->uri.len`
    3600. 
    3601. 
    3602. static void
          ^
    3603. ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
    3604.     ngx_uint_t ft_type)

src/http/ngx_http_upstream.c:3669:9: Call
    3667. 
    3668.     if (r->connection->error) {
    3669.         ngx_http_upstream_finalize_request(r, u,
                  ^
    3670.                                            NGX_HTTP_CLIENT_CLOSED_REQUEST);
    3671.         return;

src/http/ngx_http_upstream.c:3744:1: Parameter `r->uri.len`
      3742. 
      3743. 
      3744. static void
            ^
      3745. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
      3746.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:3756:9: Call
      3754.     if (u->cleanup == NULL) {
      3755.         /* the request was already finalized */
      3756.         ngx_http_finalize_request(r, NGX_DONE);
                    ^
      3757.         return;
      3758.     }

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:2581:1: Parameter `r->uri.len`
              2579. 
              2580. 
              2581. ngx_int_t
                    ^
              2582. ngx_http_internal_redirect(ngx_http_request_t *r,
              2583.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2611:5: Call
              2609.                    "internal redirect: \"%V?%V\"", uri, &r->args);
              2610. 
              2611.     ngx_http_set_exten(r);
                        ^
              2612. 
              2613.     /* clear the modules contexts */

src/http/ngx_http_core_module.c:1778:1: <LHS trace>
1776. 
1777. 
1778. void
      ^
1779. ngx_http_set_exten(ngx_http_request_t *r)
1780. {

src/http/ngx_http_core_module.c:1778:1: Parameter `r->uri.len`
                1776. 
                1777. 
                1778. void
                      ^
                1779. ngx_http_set_exten(ngx_http_request_t *r)
                1780. {

src/http/ngx_http_core_module.c:1785:10: Binary operation: ([0, r->uri.len] - 1):unsigned64 by call to `ngx_http_upstream_connect` 
                1783.     ngx_str_null(&r->exten);
                1784. 
                1785.     for (i = r->uri.len - 1; i > 1; i--) {
                               ^
                1786.         if (r->uri.data[i] == '.' && r->uri.data[i - 1] != '/') {
                1787. 
