Ticket #19244: 19244.patch

wp-admin/includes/theme.php

@@ -145 +145 @@
                 return get_themes();
 
         $themes = get_themes();
+        if ( !is_array( $themes ) )
+                return false;
+
         $ct = current_theme_info();
         $allowed_themes = apply_filters("allowed_themes", get_site_allowed_themes() );
         if ( $allowed_themes == false )
@@ -176 +179 @@
  */
 function get_page_templates() {
         $themes = get_themes();
+        if ( !is_array( $themes ) )
+                return array();
+
         $theme = get_current_theme();
         $templates = $themes[$theme]['Template Files'];
         $page_templates = array();

wp-admin/includes/update.php

@@ -221 +221 @@
         $current = get_site_transient('update_themes');
         $update_themes = array();
 
-        foreach ( $themes as $theme ) {
+        foreach ( (array) $themes as $theme ) {
                 $theme = (object) $theme;
                 if ( isset($current->response[ $theme->Stylesheet ]) ) {
                         $update_themes[$theme->Stylesheet] = $theme;

wp-includes/theme.php

@@ -480 +480 @@
         $theme_roots = get_site_transient( 'theme_roots' );
         if ( false === $theme_roots ) {
                 get_themes();
-                $theme_roots = get_site_transient( 'theme_roots' ); // this is set in get_theme()
+                $theme_roots = get_site_transient( 'theme_roots' ); // this is set in get_themes()
         }
         return $theme_roots;
 }