[Bug c++/19377] Using declaration in "private" part causes "protected" diagnostic

[amonakov at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19377

--- Comment #17 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
The bug is tagged 'rejects-valid', I think there's consensus the testcases
represent valid code, and GCC should not produce an error.