src/core/ngx_resolver.c:177: error: Integer Overflow L2
  ([0, +oo] - 5):unsigned64 by call to `ngx_parse_url`.

src/core/ngx_resolver.c:177:13: Call
175.         u.default_port = 53;
176. 
177.         if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
                 ^
178.             if (u.err) {
179.                 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,

src/core/ngx_inet.c:514:1: Parameter `u->url.len`
  512. 
  513. 
  514. ngx_int_t
       ^
  515. ngx_parse_url(ngx_pool_t *pool, ngx_url_t *u)
  516. {

src/core/ngx_inet.c:522:16: Call
  520. 
  521.     if (ngx_strncasecmp(p, (u_char *) "unix:", 5) == 0) {
  522.         return ngx_parse_unix_domain_url(pool, u);
                      ^
  523.     }
  524. 

src/core/ngx_inet.c:533:1: <LHS trace>
531. 
532. 
533. static ngx_int_t
     ^
534. ngx_parse_unix_domain_url(ngx_pool_t *pool, ngx_url_t *u)
535. {

src/core/ngx_inet.c:533:1: Parameter `u->url.len`
    531. 
    532. 
    533. static ngx_int_t
         ^
    534. ngx_parse_unix_domain_url(ngx_pool_t *pool, ngx_url_t *u)
    535. {

src/core/ngx_inet.c:541:5: Assignment
    539.     struct sockaddr_un  *saun;
    540. 
    541.     len = u->url.len;
             ^
    542.     path = u->url.data;
    543. 

src/core/ngx_inet.c:545:5: Binary operation: ([0, +oo] - 5):unsigned64 by call to `ngx_parse_url` 
    543. 
    544.     path += 5;
    545.     len -= 5;
             ^
    546. 
    547.     if (u->uri_part) {
