src/http/ngx_http_upstream.c:3740: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32 by call to `ngx_http_upstream_finalize_request`.

src/http/ngx_http_upstream.c:3740:5: Call
3738.                    "cleanup http upstream request: \"%V\"", &r->uri);
3739. 
3740.     ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
          ^
3741. }
3742. 

src/http/ngx_http_upstream.c:3744:1: Parameter `r->main->count`
  3742. 
  3743. 
  3744. static void
        ^
  3745. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
  3746.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:3756:9: Call
  3754.     if (u->cleanup == NULL) {
  3755.         /* the request was already finalized */
  3756.         ngx_http_finalize_request(r, NGX_DONE);
                ^
  3757.         return;
  3758.     }

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: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, +oo] - 1):unsigned32 by call to `ngx_http_upstream_finalize_request` 
      3356.                    "post action: \"%V\"", &clcf->post_action);
      3357. 
      3358.     r->main->count--;
                ^
      3359. 
      3360.     r->http_version = NGX_HTTP_VERSION_9;
