http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55135
--- Comment #19 from Steven Bosscher <steven at gcc dot gnu.org> 2013-03-01 19:13:32 UTC --- (In reply to comment #18) I thought you had already done that, to handle attribute flatten for bug 54146 (http://gcc.gnu.org/PR54146#c43). This test case doesn't use the flatten attribute, but explodes in the same way as the test case for bug 54146.