http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48008
--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> 2011-03-06 17:32:33 UTC --- Created attachment 23562 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23562 reduced testcase Reduced from libstdc++-v3/testsuite/20_util/function/43397.cc Also, it compiles with 4.5 (compared to original testcase).