http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54419
--- Comment #30 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-09-05 09:39:17 UTC --- > Er, why should this test ever be run with the system compiler? libstdc++ > should > only ever be built by a newly built g++. The problem is not with the compiler, but with the (target?) assembler and possibly the target CPU.