https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68448
--- Comment #2 from Jan Kratochvil <jan.kratochvil at redhat dot com> --- [patch] Python Pretty Printers get disabled on libstdc++ reload by GDB (PR libstdc++/68448) https://gcc.gnu.org/ml/gcc-patches/2015-11/msg02418.html
