http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53477
--- Comment #5 from asmwarrior <asmwarrior at gmail dot com> --- > p /r m_Headers [debug]> p /r m_Headers [debug]$5 = (StringSet &) @0x116d0bc4: {_M_t = {_M_impl = {<std::allocator<std::_Rb_tree_node<wxString> >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<wxString> >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<std::binary_function<wxString, wxString, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, _M_parent = 0x116d2d28, _M_left = 0x116d2d28, _M_right = 0x116d2d28}, _M_node_count = 1}}} [debug]>>>>>>cb_gdb: When I see the E:\code\gcc\PCXMinGW463\bin\libstdcxx\v6\printers.py, I see in the line: 476 def children (self): rep_type = find_type(self.val.type, '_Rep_type') node = find_type(rep_type, '_Link_type') node = node.strip_typedefs() return self._iter (RbtreeIterator (self.val), node) The variable is declared as: StringSet& m_Headers; and the StringSet is defined as: typedef std::set<wxString> StringSet; Hope those information can help to solve this bug.