src/http/ngx_http_upstream.c:3248: 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:3158:1: Parameter `r->main->count`
3156. 
3157. 
3158. static void
      ^
3159. ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
3160.     ngx_uint_t ft_type)

src/http/ngx_http_upstream.c:3248:17: Call
3246.                 }
3247. 
3248.                 ngx_http_upstream_finalize_request(r, u, rc);
                      ^
3249.                 return;
3250.             }

src/http/ngx_http_upstream.c:3296:1: Parameter `r->main->count`
  3294. 
  3295. 
  3296. static void
        ^
  3297. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
  3298.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:3416:9: Call
  3414.         || rc == NGX_HTTP_CLIENT_CLOSED_REQUEST)
  3415.     {
  3416.         ngx_http_finalize_request(r, rc);
                ^
  3417.         return;
  3418.     }

src/http/ngx_http_request.c:2198:1: Parameter `r->main->count`
    2196. 
    2197. 
    2198. void
          ^
    2199. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
    2200. {

src/http/ngx_http_request.c:2365:9: Call
    2363.     }
    2364. 
    2365.     if (ngx_http_post_action(r) == NGX_OK) {
                  ^
    2366.         return;
    2367.     }

src/http/ngx_http_request.c:3256:1: <LHS trace>
3254. 
3255. 
3256. static ngx_int_t
      ^
3257. ngx_http_post_action(ngx_http_request_t *r)
3258. {

src/http/ngx_http_request.c:3256:1: Parameter `r->main->count`
      3254. 
      3255. 
      3256. static ngx_int_t
            ^
      3257. ngx_http_post_action(ngx_http_request_t *r)
      3258. {

src/http/ngx_http_request.c:3274:5: Binary operation: ([0, r->main->count + 3] - 1):unsigned32 by call to `ngx_http_upstream_finalize_request` 
      3272.                    "post action: \"%V\"", &clcf->post_action);
      3273. 
      3274.     r->main->count--;
                ^
      3275. 
      3276.     r->http_version = NGX_HTTP_VERSION_9;
