http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58178
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> --- But we can't reproduce the issue on x86_64-linux. My grep gives: 0000000000400742 W _ZN4baseC1Ev 0000000000400742 W _ZN4baseC2Ev are you on linux? Please provide information about your target, otherwise this issue will be closed very soon.