src/http/ngx_http_upstream.c:556: error: Integer Overflow L2
  ([0, `r->main->count` + 3] - 1):unsigned32 by call to `ngx_http_finalize_request`.

src/http/ngx_http_upstream.c:505:1: Parameter `r->main->count`
503. 
504. 
505. static void
     ^
506. ngx_http_upstream_init_request(ngx_http_request_t *r)
507. {

src/http/ngx_http_upstream.c:556:13: Call
554. 
555.         if (rc != NGX_DECLINED) {
556.             ngx_http_finalize_request(r, rc);
                 ^
557.             return;
558.         }

src/http/ngx_http_request.c:2249:1: Parameter `r->main->count`
  2247. 
  2248. 
  2249. void
        ^
  2250. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
  2251. {

src/http/ngx_http_request.c:2287:13: Call
  2285.         || c->error)
  2286.     {
  2287.         if (ngx_http_post_action(r) == NGX_OK) {
                    ^
  2288.             return;
  2289.         }

src/http/ngx_http_request.c:3344:1: <LHS trace>
3342. 
3343. 
3344. static ngx_int_t
      ^
3345. ngx_http_post_action(ngx_http_request_t *r)
3346. {

src/http/ngx_http_request.c:3344:1: Parameter `r->main->count`
    3342. 
    3343. 
    3344. static ngx_int_t
          ^
    3345. ngx_http_post_action(ngx_http_request_t *r)
    3346. {

src/http/ngx_http_request.c:3362:5: Binary operation: ([0, r->main->count + 3] - 1):unsigned32 by call to `ngx_http_finalize_request` 
    3360.                    "post action: \"%V\"", &clcf->post_action);
    3361. 
    3362.     r->main->count--;
              ^
    3363. 
    3364.     r->http_version = NGX_HTTP_VERSION_9;
