http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51967
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-01-23 15:39:52 UTC --- do the printers ever work, outside the testsuite? i.e. if you build this: #include <tuple> int main() { std::tuple<int, int> t; return std::tuple_size<decltype(t)>::value; } then debug and run break 4 run print t you should see $1 = std::tuple containing = { [1] = 0, [2] = 0 } does it make any difference if you put this in ~/.gdbinit (with the correct path to the installed gcc)? python import sys sys.path.insert(0, '/path/to/gcc/share/gcc-4.7.0/python') from libstdcxx.v6.printers import register_libstdcxx_printers register_libstdcxx_printers (None) end