The website http://gcc.gnu.org/projects/cxx0x.html
claims that the "New character types N2249" C++0x extension is not supported by any version of GCC. But GCC 4.4.0 supports the u8, u and U string prefixes. :-) -- Summary: Missing feature documentation Product: gcc Version: 4.4.0 Status: UNCONFIRMED Severity: minor Priority: P3 Component: web AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: piotr dot wyderski at gmail dot com GCC host triplet: GCC-4.4.0, Cygwin, Windows XP http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38973