http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48565
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-04-13 15:09:36 UTC --- It shouldn't happen unless the person running the testsuite specifies it, so they can not specify it. How did you configure the library to hit this problem? Jakub's suggestion is that the testsuite could filter it out, so that even when users do specify it, the testsuite doesn't use it.