Ticket #18120: link-template.diff

wp-includes/link-template.php

@@ -1130 +1130 @@
         }
 
         $adjacent = $previous ? 'previous' : 'next';
-        $op = $previous ? '<' : '>';
+        $dateCmp = 'BETWEEN ' . ($previous ? "%s AND '9999-12-31 00:00:00'" : "'1970-01-01 00:00:00' AND %s" );
         $order = $previous ? 'DESC' : 'ASC';
 
         $join  = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_cat, $excluded_categories );
-        $where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare("WHERE p.post_date $op %s AND p.post_type = %s AND p.post_status = 'publish' $posts_in_ex_cats_sql", $current_post_date, $post->post_type), $in_same_cat, $excluded_categories );
+        $where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare("WHERE p.post_date $dateCmp AND p.post_type = %s AND p.post_status = 'publish' $posts_in_ex_cats_sql", $current_post_date, $post->post_type), $in_same_cat, $excluded_categories );
         $sort  = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1" );
 
-        $query = "SELECT p.* FROM $wpdb->posts AS p $join $where $sort";
+        $query = "SELECT p.ID, p.post_title, p.post_status, p.post_date FROM $wpdb->posts AS p $join $where $sort";
         $query_key = 'adjacent_post_' . md5($query);
         $result = wp_cache_get($query_key, 'counts');
         if ( false !== $result )