http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53350
--- Comment #9 from Ryan Thompson <rct+gcc at thompsonclan dot org> 2012-05-17 00:44:30 UTC --- The main issue is that it doesn't work in 6.4.1, which is the version provided in Ubuntu 11.10, which means that anyone running 11.10 won't be able to compile programs that use this boost header. Should I file a bug in Launchpad to get the fix backported or something?
