Ticket #34936: shortinit.34936.1.diff

src/wp-settings.php

@@ -111 +111 @@
 
 register_shutdown_function( 'shutdown_action_hook' );
 
+/**
+ * Fires after WordPress has been partially loaded.
+ *
+ * Use this action to execute a callback very early in the bootstrap process.
+ *
+ * @since 4.6.0
+ */
+do_action( 'shortinit' );
+
 // Stop most of WordPress from being loaded if we just want the basics.
 if ( SHORTINIT )
         return false;