src/http/ngx_http_upstream.c:4116: 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:4015:1: Parameter `r->main->count`
4013. 
4014. 
4015. static void
      ^
4016. ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
4017.     ngx_uint_t ft_type)

src/http/ngx_http_upstream.c:4116:13: Call
4114.             }
4115. 
4116.             ngx_http_upstream_finalize_request(r, u, rc);
                  ^
4117.             return;
4118.         }

src/http/ngx_http_upstream.c:4163:1: Parameter `r->main->count`
  4161. 
  4162. 
  4163. static void
        ^
  4164. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
  4165.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:4174:9: Call
  4172.     if (u->cleanup == NULL) {
  4173.         /* the request was already finalized */
  4174.         ngx_http_finalize_request(r, NGX_DONE);
                ^
  4175.         return;
  4176.     }

src/http/ngx_http_request.c:2292:1: Parameter `r->main->count`
    2290. 
    2291. 
    2292. void
          ^
    2293. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
    2294. {

src/http/ngx_http_request.c:2473:9: Call
    2471.     }
    2472. 
    2473.     if (ngx_http_post_action(r) == NGX_OK) {
                  ^
    2474.         return;
    2475.     }

src/http/ngx_http_request.c:3376:1: <LHS trace>
3374. 
3375. 
3376. static ngx_int_t
      ^
3377. ngx_http_post_action(ngx_http_request_t *r)
3378. {

src/http/ngx_http_request.c:3376:1: Parameter `r->main->count`
      3374. 
      3375. 
      3376. static ngx_int_t
            ^
      3377. ngx_http_post_action(ngx_http_request_t *r)
      3378. {

src/http/ngx_http_request.c:3394:5: Binary operation: ([0, r->main->count + 3] - 1):unsigned32 by call to `ngx_http_upstream_finalize_request` 
      3392.                    "post action: \"%V\"", &clcf->post_action);
      3393. 
      3394.     r->main->count--;
                ^
      3395. 
      3396.     r->http_version = NGX_HTTP_VERSION_9;
