Ticket #14426: 14426.diff

wp-includes/query.php

@@ -2799 +2799 @@
         function set_found_posts( $q, $limits ) {
                 global $wpdb;
 
-                if ( $q['no_found_rows'] || ! $this->posts )
+                // Bail if posts is an empty array. Continue if posts is an empty string
+                // null, or false to accommodate caching plugins that fill posts later.
+                if ( $q['no_found_rows'] || ( is_array( $this->posts ) && ! $this->posts ) )
                         return;
 
                 if ( ! empty( $limits ) )