http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50043
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-02-21 12:05:40 UTC --- We don't want front-end testcases that rely on <iostream> and need to check what gets printed. A better test would use static_assert, but would also test cases with both throwing and non-throwing base class and members.