PR c++/59614
	* class.c (abi_tag_data): Add tags field.
	(check_abi_tags): Initialize it.
	(find_abi_tags_r): Support collecting missing tags.
	(mark_type_abi_tags): Don't look at template args.
	(inherit_targ_abi_tags): New.
	(check_bases_and_members): Use it.
	* cp-tree.h (ABI_TAG_IMPLICIT): New.
	* mangle.c (write_abi_tags): Check it.

From-SVN: r206439