http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58962
--- Comment #1 from Bruce Merry <bmerry at gmail dot com> --- I've now realised that this is actually just the tip of the iceberg - I suspect that libstdc++'s pretty printers aren't Python 3 ready, while Ubuntu is shipping a gdb linked to libython 3.3. Feel free to close if this is as expected.