src/http/ngx_http_upstream.c:712: error: Integer Overflow L2
  ([0, 3+max(64532, `r->main->count`)] - 1):unsigned32 by call to `ngx_http_upstream_connect`.

src/http/ngx_http_upstream.c:535:1: Parameter `r->main->count`
533. 
534. 
535. static void
     ^
536. ngx_http_upstream_init_request(ngx_http_request_t *r)
537. {

src/http/ngx_http_upstream.c:712:13: Call
710.             }
711. 
712.             ngx_http_upstream_connect(r, u);
                 ^
713. 
714.             return;

src/http/ngx_http_upstream.c:1454:1: Parameter `r->main->count`
  1452. 
  1453. 
  1454. static void
        ^
  1455. ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
  1456. {

src/http/ngx_http_upstream.c:1494:9: Call
  1492.     if (rc == NGX_BUSY) {
  1493.         ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
  1494.         ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
                ^
  1495.         return;
  1496.     }

src/http/ngx_http_upstream.c:4105:1: Parameter `r->main->count`
    4103. 
    4104. 
    4105. static void
          ^
    4106. ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
    4107.     ngx_uint_t ft_type)

src/http/ngx_http_upstream.c:4168:9: Call
    4166. 
    4167.     if (r->connection->error) {
    4168.         ngx_http_upstream_finalize_request(r, u,
                  ^
    4169.                                            NGX_HTTP_CLIENT_CLOSED_REQUEST);
    4170.         return;

src/http/ngx_http_upstream.c:4249:1: Parameter `r->main->count`
      4247. 
      4248. 
      4249. static void
            ^
      4250. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
      4251.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:4392:9: Call
      4390. 
      4391.     if (r->header_only) {
      4392.         ngx_http_finalize_request(r, rc);
                    ^
      4393.         return;
      4394.     }

src/http/ngx_http_request.c:2263:1: <LHS trace>
2261. 
2262. 
2263. void
      ^
2264. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
2265. {

src/http/ngx_http_request.c:2263:1: Parameter `r->main->count`
        2261. 
        2262. 
        2263. void
              ^
        2264. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
        2265. {

src/http/ngx_http_request.c:2354:13: Binary operation: ([0, 3+max(64532, r->main->count)] - 1):unsigned32 by call to `ngx_http_upstream_connect` 
        2352.         if (r == c->data) {
        2353. 
        2354.             r->main->count--;
                          ^
        2355. 
        2356.             if (!r->logged) {
