http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43554
--- Comment #10 from Paolo Carlini <paolo.carlini at oracle dot com> 2010-10-11 23:15:01 UTC --- Silvius -- due to the recent changes to the normal-mode forward_list to enable the debug-mode version (essentially the use of a nested namespace), now simply including <forward_list> as part of a profile-mode build breaks everything. Just run make check-profile to see what I mean. I can add a dummy profile-mode forward_list, not profiling anything, just let me know if you actually mean to implement something beyond that. Thanks.