Ticket #45989: 45989.6.diff

src/wp-includes/class-wp-fatal-error-handler.php

@@ -26 +26 @@
          * @since 5.2.0
          */
         public function handle() {
-                // Bail if WordPress executed successfully.
-                if ( defined( 'WP_EXECUTION_SUCCEEDED' ) && WP_EXECUTION_SUCCEEDED ) {
+                // Bail if headers already sent.
+                if ( headers_sent() ) {
                         return;
                 }
 

src/wp-settings.php

@@ -544 +544 @@
  * @since 3.0.0
  */
 do_action( 'wp_loaded' );
-
-/*
- * Store the fact that we could successfully execute the entire WordPress
- * lifecycle. This is used to skip the premature shutdown handler, as it cannot
- * be unregistered.
- */
-if ( ! defined( 'WP_EXECUTION_SUCCEEDED' ) ) {
-        define( 'WP_EXECUTION_SUCCEEDED', true );
-}