Use TREE_READONLY and TREE_THIS_VOLATILE, not TYPE_...
From-SVN: r1929
/* Merge const and volatile flags of the incoming types. */
result_type
= build_type_variant (result_type,
- TYPE_READONLY (op1) || TYPE_READONLY (op2),
- TYPE_VOLATILE (op1) || TYPE_VOLATILE (op2));
+ TREE_READONLY (op1) || TREE_READONLY (op2),
+ TREE_THIS_VOLATILE (op1) || TREE_THIS_VOLATILE (op2));
if (result_type != TREE_TYPE (op1))
op1 = convert (result_type, op1);