re PR c++/13438 (internal compiler error: tree check: expected identifier_node, have integer_cst in c_parse_error at c-common.c:5921)

	PR c++/13438
	* cp-tree.h (cp_tree_index): Remove CPTI_RECORD_TYPE,
	CPTI_UNION_TYPE, CPTI_ENUM_TYPE.
	(record_type_node): Remove.
	(union_type_node): Likewise.
	(enum_type_node): Likewise.
	* decl.c: Remove mention of above tree nodes in comment.
	* lex.c (cxx_init): Do not assign to record_type_node,
	union_type_node, or enum_type_node.  Simplify handling of
	class_type_node.

	PR c++/13438
	* g++.dg/parse/error8.C: New test.

From-SVN: r74931