https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60734
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Bhargava Shastry from comment #12) > a) and b) together imply that it is possible that _M_right points to an > object of type _Rb_tree_node_base when cast to _Link_type in [1]. Is this a > matter for concern? Not especially, because we never dereference it except when it really does point to the derived type. We might be able to replace those with reinterpret_cast, or just return the base pointer and delay the cast until needed.
