src/http/modules/ngx_http_fastcgi_module.c:3522: error: Integer Overflow L2
  ([0, +oo] - 5):unsigned64 by call to `ngx_http_upstream_add`.

src/http/modules/ngx_http_fastcgi_module.c:3522:31: Call
3520.     u.no_resolve = 1;
3521. 
3522.     flcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0);
                                    ^
3523.     if (flcf->upstream.upstream == NULL) {
3524.         return NGX_CONF_ERROR;

src/http/ngx_http_upstream.c:5652:1: Parameter `u->url.len`
  5650. 
  5651. 
  5652. ngx_http_upstream_srv_conf_t *
        ^
  5653. ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
  5654. {

src/http/ngx_http_upstream.c:5662:13: Call
  5660.     if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
  5661. 
  5662.         if (ngx_parse_url(cf->pool, u) != NGX_OK) {
                    ^
  5663.             if (u->err) {
  5664.                 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,

src/core/ngx_inet.c:528:1: Parameter `u->url.len`
    526. 
    527. 
    528. ngx_int_t
         ^
    529. ngx_parse_url(ngx_pool_t *pool, ngx_url_t *u)
    530. {

src/core/ngx_inet.c:538:16: Call
    536. 
    537.     if (len >= 5 && ngx_strncasecmp(p, (u_char *) "unix:", 5) == 0) {
    538.         return ngx_parse_unix_domain_url(pool, u);
                        ^
    539.     }
    540. 

src/core/ngx_inet.c:549:1: <LHS trace>
547. 
548. 
549. static ngx_int_t
     ^
550. ngx_parse_unix_domain_url(ngx_pool_t *pool, ngx_url_t *u)
551. {

src/core/ngx_inet.c:549:1: Parameter `u->url.len`
      547. 
      548. 
      549. static ngx_int_t
           ^
      550. ngx_parse_unix_domain_url(ngx_pool_t *pool, ngx_url_t *u)
      551. {

src/core/ngx_inet.c:557:5: Assignment
      555.     struct sockaddr_un  *saun;
      556. 
      557.     len = u->url.len;
               ^
      558.     path = u->url.data;
      559. 

src/core/ngx_inet.c:561:5: Binary operation: ([0, +oo] - 5):unsigned64 by call to `ngx_http_upstream_add` 
      559. 
      560.     path += 5;
      561.     len -= 5;
               ^
      562. 
      563.     if (u->uri_part) {
