[Bug c++/59081] GCC should forbid using a private member datatype in template class

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59081

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Please check whether this is a duplicate of any of the "Depends on" bugs for PR
59002