http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53630
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-06-11 08:29:50 UTC --- Documented as missing in http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.2011 The whole of Clause 28 is partially supported or not supported at all. i.e. <regex> DOESN'T WORK! There's really no point reporting bugs against unimplemented functionality.
