http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51989
--- Comment #8 from Leonid Volnitsky <leonid at volnitsky dot com> 2012-01-25 12:29:22 UTC --- I understand that. And thank you for giving me a hint and code for is_container, it was more than I expected if it was non-bug. I've made the comment only because I've thought that it might help to diagnose the problem, if there is a bug after all.
