Index: tree-dump.c
===================================================================
--- tree-dump.c	(revision 186430)
+++ tree-dump.c	(working copy)
@@ -596,6 +596,7 @@ dequeue_and_dump (dump_info_p di)
       break;
 
     case COMPONENT_REF:
+    case BIT_FIELD_REF:
       dump_child ("op 0", TREE_OPERAND (t, 0));
       dump_child ("op 1", TREE_OPERAND (t, 1));
       dump_child ("op 2", TREE_OPERAND (t, 2));