Ticket #40850: class-wp-query.php.2.diff

wp-includes/class-wp-query.php

@@ -3144 +3144 @@
                         do_action_ref_array( 'loop_end', array( &$this ) );
                         // Do some cleaning up after the loop
                         $this->rewind_posts();
+                } elseif ( 0 === $this->post_count ) {
+                        /**
+                         * Fires if no results are found.
+                         *
+                         * @since 4.9.0
+                         *
+                         * @param WP_Query $this The WP_Query instance.
+                         */
+                        do_action( 'loop_no_results', $this );
                 }
 
                 $this->in_the_loop = false;