http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55649
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-12-11 16:34:09 UTC --- (In reply to comment #0) > The Tr1UnorderedMapPrinter pretty printer, and other tr1 pretty printers look > for variables starting with _M_, the actual variable names start with m_ No they don't: http://gcc.gnu.org/viewcvs/trunk/libstdc%2B%2B-v3/include/tr1/unordered_map.h?view=markup