src/http/ngx_http_upstream.c:568: error: Integer Overflow L2
  ([0, `r->main->count` + 3] - 1):unsigned32 by call to `ngx_http_finalize_request`.

src/http/ngx_http_upstream.c:517:1: Parameter `r->main->count`
515. 
516. 
517. static void
     ^
518. ngx_http_upstream_init_request(ngx_http_request_t *r)
519. {

src/http/ngx_http_upstream.c:568:13: Call
566. 
567.         if (rc != NGX_DECLINED) {
568.             ngx_http_finalize_request(r, rc);
                 ^
569.             return;
570.         }

src/http/ngx_http_request.c:2257:1: Parameter `r->main->count`
  2255. 
  2256. 
  2257. void
        ^
  2258. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
  2259. {

src/http/ngx_http_request.c:2423:9: Call
  2421.     }
  2422. 
  2423.     if (ngx_http_post_action(r) == NGX_OK) {
                ^
  2424.         return;
  2425.     }

src/http/ngx_http_request.c:3340:1: <LHS trace>
3338. 
3339. 
3340. static ngx_int_t
      ^
3341. ngx_http_post_action(ngx_http_request_t *r)
3342. {

src/http/ngx_http_request.c:3340:1: Parameter `r->main->count`
    3338. 
    3339. 
    3340. static ngx_int_t
          ^
    3341. ngx_http_post_action(ngx_http_request_t *r)
    3342. {

src/http/ngx_http_request.c:3358:5: Binary operation: ([0, r->main->count + 3] - 1):unsigned32 by call to `ngx_http_finalize_request` 
    3356.                    "post action: \"%V\"", &clcf->post_action);
    3357. 
    3358.     r->main->count--;
              ^
    3359. 
    3360.     r->http_version = NGX_HTTP_VERSION_9;
