ngx_rbt_copy_color  223 src/core/ngx_rbtree.c         ngx_rbt_copy_color(subst, node);
ngx_rbt_copy_color  281 src/core/ngx_rbtree.c                 ngx_rbt_copy_color(w, temp->parent);
ngx_rbt_copy_color  310 src/core/ngx_rbtree.c                 ngx_rbt_copy_color(w, temp->parent);