https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69953
--- Comment #4 from john.frankish at outlook dot com --- Created attachment 37800 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37800&action=edit preprocessed gtkmm-3.16.0/gtk/gtkmm/treeviewcolumn.cc I'm not too sure what I'm doing here, but Gtk::TreeViewColumn seems to be implemented by gtkmm-3.16.0/gtk/gtkmm/treeviewcolumn.cc Outout attached from: $ g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe -std=c++11 -E gtkmm-3.16.0/gtk/gtkmm/treeviewcolumn.cc -I/usr/local/include/glibmm-2.4 -I/usr/local/lib/glibmm-2.4/include -I/usr/local/include/glib-2.0 -I/usr/local/lib/glib-2.0/include -I/usr/local/include/sigc++-2.0 -I/usr/local/lib/sigc++-2.0/include -I/usr/local/include/gtkmm-3.0 -I/usr/local/lib/gtkmm-3.0/include -I/usr/local/lib/gdkmm-3.0/include -I/usr/local/lib/pangomm-1.4/include -I/usr/local/include/gtk-3.0 -I/usr/local/include/pango-1.0 -I/usr/local/include/cairo -I/usr/local/include/gdk-pixbuf-2.0 -I/usr/local/include/atk-1.0 -I/usr/local/include/pangomm-1.4 -I/usr/local/include/cairomm-1.0 -I/usr/local/include/freetype2 -I/usr/local/include/atkmm-1.6 -I/usr/local/include/gdkmm-3.0 -I/usr/local/include/giomm-2.4
