src/http/ngx_http_upstream.c:2788: error: Integer Overflow L2
  ([0, `r->main->count` + 3] - 1):unsigned32 by call to `ngx_http_upstream_finalize_request`.

src/http/ngx_http_upstream.c:2707:1: Parameter `r->main->count`
2705. 
2706. 
2707. static void
      ^
2708. ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
2709.     ngx_uint_t ft_type)

src/http/ngx_http_upstream.c:2788:17: Call
2786.                 }
2787. 
2788.                 ngx_http_upstream_finalize_request(r, u, rc);
                      ^
2789.                 return;
2790.             }

src/http/ngx_http_upstream.c:2846:1: Parameter `r->main->count`
  2844. 
  2845. 
  2846. static void
        ^
  2847. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
  2848.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:2950:5: Call
  2948.     }
  2949. 
  2950.     ngx_http_finalize_request(r, rc);
            ^
  2951. }
  2952. 

src/http/ngx_http_request.c:1831:1: Parameter `r->main->count`
    1829. 
    1830. 
    1831. void
          ^
    1832. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
    1833. {

src/http/ngx_http_request.c:2001:9: Call
    1999.     }
    2000. 
    2001.     if (ngx_http_post_action(r) == NGX_OK) {
                  ^
    2002.         return;
    2003.     }

src/http/ngx_http_request.c:2809:1: <LHS trace>
2807. 
2808. 
2809. static ngx_int_t
      ^
2810. ngx_http_post_action(ngx_http_request_t *r)
2811. {

src/http/ngx_http_request.c:2809:1: Parameter `r->main->count`
      2807. 
      2808. 
      2809. static ngx_int_t
            ^
      2810. ngx_http_post_action(ngx_http_request_t *r)
      2811. {

src/http/ngx_http_request.c:2823:5: Binary operation: ([0, r->main->count + 3] - 1):unsigned32 by call to `ngx_http_upstream_finalize_request` 
      2821.                    "post action: \"%V\"", &clcf->post_action);
      2822. 
      2823.     r->main->count--;
                ^
      2824. 
      2825.     r->http_version = NGX_HTTP_VERSION_9;
