Fix PR c++/40007

    gcc/cp/ChangeLog:
    	PR c++/40007
    	* cp-tree.h (MEMBER_TYPES_NEEDING_ACCESS_CHECK): Remove this accessor.
    	(TI_TYPEDEFS_NEEDING_ACCESS_CHECKING): New accessor.
    	(get_types_needing_access_check): Declare new entry point.
    	* pt.c (append_type_to_template_for_access_check_1,
    	get_types_needing_access_check): New functions.
    	(perform_typedefs_access_check): Accept FUNCTION_DECLs and
    	RECORD_TYPEs rather than TEMPLATE_DECLs. Use the new
    	get_types_needing_access_check, no more
    	MEMBER_TYPES_NEEDING_ACCESS_CHECK.
    	(instantiate_class_template): Set input_location to the source
    	location of the most specialized template definition.
    	Perform access check using the RECORD_TYPE of the template, not its
    	associated most generic TEMPLATE_DECL.
    	(append_type_to_template_for_access_check): Augment function
    	comments. Use the new get_types_needing_access_check, not
    	MEMBER_TYPE_NEEDING_ACCESS_CHECK. Use the new
    	append_type_to_template_for_access_check_1 subroutine.

    gcc/testsuite/ChangeLog:
    	PR c++/40007
    	* g++.dg/template/typedef18.C: New test.
    	* g++.dg/template/typedef19.C: Likewise.
    	* g++.dg/template/typedef20.C: Likewise.
    	* g++.dg/template/access11.C: Adjust.

From-SVN: r147866