--- list.h.mesa-master	2015-07-13 02:36:39.780271275 +0200
+++ list.h	2015-07-13 02:34:54.281266021 +0200
@@ -307,9 +307,9 @@
 #endif
 
 struct exec_list {
-   struct exec_node *head;
-   struct exec_node *tail;
-   struct exec_node *tail_pred;
+   struct exec_node * volatile head;
+   struct exec_node *          tail;
+   struct exec_node * volatile tail_pred;
 
 #ifdef __cplusplus
    DECLARE_RALLOC_CXX_OPERATORS(exec_list)