src/http/ngx_http_core_module.c:998: error: Integer Overflow L1
  (0 - 1):unsigned32 by call to `ngx_http_finalize_request`.

src/http/ngx_http_core_module.c:966:1: Parameter `r->uri_changes`
964. 
965. 
966. ngx_int_t
     ^
967. ngx_http_core_post_rewrite_phase(ngx_http_request_t *r,
968.     ngx_http_phase_handler_t *ph)

src/http/ngx_http_core_module.c:990:5: Assignment
988.      */
989. 
990.     r->uri_changes--;
         ^
991. 
992.     if (r->uri_changes == 0) {

src/http/ngx_http_core_module.c:998:9: Call
 996. 
 997.         r->main->count++;
 998.         ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
              ^
 999.         return NGX_OK;
1000.     }

src/http/ngx_http_request.c:1831:1: Parameter `r->uri_changes`
  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: Parameter `r->uri_changes`
    2807. 
    2808. 
    2809. static ngx_int_t
          ^
    2810. ngx_http_post_action(ngx_http_request_t *r)
    2811. {

src/http/ngx_http_request.c:2832:9: Call
    2830. 
    2831.     if (clcf->post_action.data[0] == '/') {
    2832.         ngx_http_internal_redirect(r, &clcf->post_action, NULL);
                  ^
    2833. 
    2834.     } else {

src/http/ngx_http_core_module.c:2163:1: <LHS trace>
2161. 
2162. 
2163. ngx_int_t
      ^
2164. ngx_http_internal_redirect(ngx_http_request_t *r,
2165.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2163:1: Parameter `r->uri_changes`
      2161. 
      2162. 
      2163. ngx_int_t
            ^
      2164. ngx_http_internal_redirect(ngx_http_request_t *r,
      2165.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2169:5: Binary operation: (0 - 1):unsigned32 by call to `ngx_http_finalize_request` 
      2167.     ngx_http_core_srv_conf_t  *cscf;
      2168. 
      2169.     r->uri_changes--;
                ^
      2170. 
      2171.     if (r->uri_changes == 0) {
