Ticket #36628: 36628.patch

src/wp-admin/includes/upgrade.php

@@ -317 +317 @@
                  */
                 $wp_rewrite->flush_rules( true );
 
-                // Test against a real WordPress Post, or if none were created, a random 404 page.
-                $test_url = get_permalink( 1 );
+                $test_url = '';
 
-                if ( ! $test_url ) {
-                        $test_url = home_url( '/wordpress-check-for-rewrites/' );
+                // Test against a real WordPress Post
+                $first_post = get_page_by_path( sanitize_title( _x( 'hello-world', 'Default post slug' ) ), OBJECT, 'post' );
+                if ( $first_post ) {
+                        $test_url = get_permalink( $first_post->ID );
                 }
 
                 /*