src/http/ngx_http_upstream.c:729: error: Integer Overflow L2
  ([0, 3+max(64535, `r->main->count`)] - 1):unsigned32 by call to `ngx_http_upstream_connect`.

src/http/ngx_http_upstream.c:549:1: Parameter `r->main->count`
547. 
548. 
549. static void
     ^
550. ngx_http_upstream_init_request(ngx_http_request_t *r)
551. {

src/http/ngx_http_upstream.c:729:13: Call
727.             }
728. 
729.             ngx_http_upstream_connect(r, u);
                 ^
730. 
731.             return;

src/http/ngx_http_upstream.c:1501:1: Parameter `r->main->count`
  1499. 
  1500. 
  1501. static void
        ^
  1502. ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
  1503. {

src/http/ngx_http_upstream.c:1543:9: Call
  1541.     if (rc == NGX_BUSY) {
  1542.         ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
  1543.         ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
                ^
  1544.         return;
  1545.     }

src/http/ngx_http_upstream.c:4129:1: Parameter `r->main->count`
    4127. 
    4128. 
    4129. static void
          ^
    4130. ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
    4131.     ngx_uint_t ft_type)

src/http/ngx_http_upstream.c:4205:9: Call
    4203. 
    4204.     if (r->connection->error) {
    4205.         ngx_http_upstream_finalize_request(r, u,
                  ^
    4206.                                            NGX_HTTP_CLIENT_CLOSED_REQUEST);
    4207.         return;

src/http/ngx_http_upstream.c:4297:1: Parameter `r->main->count`
      4295. 
      4296. 
      4297. static void
            ^
      4298. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
      4299.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:4308:9: Call
      4306.     if (u->cleanup == NULL) {
      4307.         /* the request was already finalized */
      4308.         ngx_http_finalize_request(r, NGX_DONE);
                    ^
      4309.         return;
      4310.     }

src/http/ngx_http_request.c:2412:1: Parameter `r->main->count`
        2410. 
        2411. 
        2412. void
              ^
        2413. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
        2414. {

src/http/ngx_http_request.c:2450:13: Call
        2448.         || c->error)
        2449.     {
        2450.         if (ngx_http_post_action(r) == NGX_OK) {
                          ^
        2451.             return;
        2452.         }

src/http/ngx_http_request.c:3501:1: <LHS trace>
3499. 
3500. 
3501. static ngx_int_t
      ^
3502. ngx_http_post_action(ngx_http_request_t *r)
3503. {

src/http/ngx_http_request.c:3501:1: Parameter `r->main->count`
          3499. 
          3500. 
          3501. static ngx_int_t
                ^
          3502. ngx_http_post_action(ngx_http_request_t *r)
          3503. {

src/http/ngx_http_request.c:3519:5: Binary operation: ([0, 3+max(64535, r->main->count)] - 1):unsigned32 by call to `ngx_http_upstream_connect` 
          3517.                    "post action: \"%V\"", &clcf->post_action);
          3518. 
          3519.     r->main->count--;
                    ^
          3520. 
          3521.     r->http_version = NGX_HTTP_VERSION_9;
