src/http/ngx_http_core_module.c:4553: error: Integer Overflow L2
  ([0, +oo] - 6):unsigned64 by call to `ngx_resolver_create`.

src/http/ngx_http_core_module.c:4553:22: Call
4551.     value = cf->args->elts;
4552. 
4553.     clcf->resolver = ngx_resolver_create(cf, &value[1], cf->args->nelts - 1);
                           ^
4554.     if (clcf->resolver == NULL) {
4555.         return NGX_CONF_ERROR;

src/core/ngx_resolver.c:93:1: <LHS trace>
91. 
92. 
93. ngx_resolver_t *
    ^
94. ngx_resolver_create(ngx_conf_t *cf, ngx_str_t *names, ngx_uint_t n)
95. {

src/core/ngx_resolver.c:93:1: Parameter `names->len`
  91. 
  92. 
  93. ngx_resolver_t *
      ^
  94. ngx_resolver_create(ngx_conf_t *cf, ngx_str_t *names, ngx_uint_t n)
  95. {

src/core/ngx_resolver.c:157:13: Binary operation: ([0, +oo] - 6):unsigned64 by call to `ngx_resolver_create` 
  155.     for (i = 0; i < n; i++) {
  156.         if (ngx_strncmp(names[i].data, "valid=", 6) == 0) {
  157.             s.len = names[i].len - 6;
                   ^
  158.             s.data = names[i].data + 6;
  159. 
