http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50982
--- Comment #53 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-01-15 14:54:16 UTC --- Then I'm confused - the tests should depend on availability of the same features as the code, and the code is now compiled on AIX (as we know because it was failing to build previously.) If you email me the testsuite/libstdc++.log output I can look at that and have another go at enabling the tests.