WordPress Version: 4.3
/**
* Handle sidebars config after theme change
*
* @access private
* @since 3.3.0
*
* @global array $sidebars_widgets
*/
function _wp_sidebars_changed()
{
global $sidebars_widgets;
if (!is_array($sidebars_widgets)) {
$sidebars_widgets = wp_get_sidebars_widgets();
}
retrieve_widgets(true);
}