PR c++/18368

	* parser.c (cp_parser_check_for_definition_in_return_type): Take
	the defined type as a parameter, and inform the user about the
	possibility of a missing semicolon.
	(cp_parser_explicit_instantiation): Adjust call to
	cp_parser_check_for_definition_in_return_type.
	(cp_parser_init_declarator): Likewise.
	(cp_parser_member_declaration): Likewise.

	PR c++/18674
	* cp-tree.def (TYPENAME_TYPE): Remove discussion of implicit
	typename from comments.
	* cp-tree.h (TYPENAME_IS_ENUM_P): New macro.
	(TYPENAME_IS_CLASS_P): Likewise.
	(make_typename_type): Change prototype.
	* decl.c (struct_typename_info): New type.
	(typename_compare): Expect the second argument to be a
	typename_info, not a tree.
	(build_typename_type): Add tag_type parameter.  Do not create a
	new type until necessary.
	(make_typename_type): Add tag_type parameter.
	* error.c (TYPENAME_TYPE): Print tags other than "typename" if
	appropriate.
	* friend.c (make_friend_class): Adjust call to make_typename_type.
	* parser.c (cp_parser_make_typename_type): Likewise.
	(cp_parser_primary_expression): Adjust call to
	cp_parser_lookup_name.
	(cp_parser_unqualified_id): Adjust calls to cp_parser_class_name.
	(cp_parser_class_or_namespace_name): Likewise.
	(cp_parser_postfix_expression): Adjust calls to
	make_typename_type.
	(cp_parser_mem_initializer_id): Adjust calls to
	cp_parser_class_name.
	(cp_parser_type_parameter): Adjust calls to cp_parser_lookup_name.
	(cp_parser_template_name): Likewise.
	(cp_parser_template_argument): Likewise.
	(cp_parser_type_name): Adjust call to cp_parser_class_name.
	(cp_parser_elaborated_type_specifier): Adjust calls to
	make_typename_type and cp_parser_lookup_name.
	(cp_parser_namespace_name): Likewise.
	(cp_parser_class_name): Replace type_p parameter with tag_type.
	Adjust calls to make_typename_type and cp_parser_lookup_name.
	(cp_parser_class_head): Adjust calls to cp_parser_class_name.
	(cp_parser_base_specifier): Likewise.
	(cp_parser_lookup_name): Replace is_type parameter with tag_type.
	Adjust calls to make_typename_type and lookup_qualified_name.
	(cp_parser_lookup_name_simple): Adjust call to
	cp_parser_lookup_name.
	(cp_parser_constructor_declarator_p): Adjust call to
	cp_parser_class_name.
	* pt.c (convert_template_argument): Adjust all to
	make_typename_type.
	(tsubst_decl): Do not pre-substitute the type of the declaration.
	(tsubst): Hand off declarations more quickly.  Adjust call to
	make_typename_type.

	PR c++/18512
	* parser.c (cp_parser_postfix_dot_deref_expression): Robustify.

	PR c++/18674
	* g++.old-deja/g++.brendan/crash16.C: Adjust error messages.
	* g++.old-deja/g++.law/ctors5.C: Likewise.
	* g++.old-deja/g++.other/crash25.C: Likewise.

	PR c++/18674
	* g++.dg/template/error16.C: New test.

	PR c++/18512
	* g++.dg/template/crash29.C: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@91483 138bc75d-0d04-0410-961f-82ee72b054a4

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