http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55325
--- Comment #9 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-11-14 22:30:51 UTC --- In fact, however, a Linux target like s390x is also affected: http://gcc.gnu.org/ml/gcc-testresults/2012-11/msg01187.html