PR c++/38798
	* parser.c (CP_PARSER_FLAGS_NO_TYPE_DEFINITIONS): New.
	(cp_parser_type_specifier): Don't try to parse a class-specifier
	or enum-specifier in that case.
	(cp_parser_trailing_type_id): New.
	(cp_parser_late_return_type_opt): Call it.
	(cp_parser_type_id_1): Add is_trailing_return parm.
	(cp_parser_type_specifier_seq): Likewise.

From-SVN: r152924