Ticket #16626: test-16626.php

<?php

add_action( 'init', function () {
        register_post_type( 'question', array(
                'public' => true,
                'has_archive' => true,
                'label' => 'Questions',
        ) );

        flush_rewrite_rules();
});

add_action( 'template_redirect', function() {
        global $wp;

        echo '<pre>';
        var_dump( get_post_type_archive_link( 'question' ) );
        var_dump( $wp->matched_rule, $wp->query_string );
        echo '</pre>';
});