src/http/ngx_http_upstream.c:1790: error: Integer Overflow L2
  ([0, `r->main->count` + 1] - 1):unsigned32 by call to `ngx_http_finalize_request`.

src/http/ngx_http_upstream.c:1753:1: Parameter `r->main->count`
1751. 
1752. 
1753. static ngx_int_t
      ^
1754. ngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)
1755. {

src/http/ngx_http_upstream.c:1768:9: Call
1766.         && !(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT))
1767.     {
1768.         ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
              ^
1769. 
1770.         part = &u->headers_in.headers.part;

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:1790:21: Call
1788.             if (hh && hh->redirect) {
1789.                 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
1790.                     ngx_http_finalize_request(r,
                          ^
1791.                                               NGX_HTTP_INTERNAL_SERVER_ERROR);
1792.                     return NGX_DONE;

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 + 1] - 1):unsigned32 by call to `ngx_http_finalize_request` 
    2821.                    "post action: \"%V\"", &clcf->post_action);
    2822. 
    2823.     r->main->count--;
              ^
    2824. 
    2825.     r->http_version = NGX_HTTP_VERSION_9;
