http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52841
Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to work| |4.6.3 Target Milestone|--- |4.7.1 --- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-04-03 12:15:51 UTC --- The following is rejected as well, with the same error struct Solvable; namespace sat { class Solvable { public: typedef bool bool_type; }; } namespace sat2 { class Solvable { public: typedef bool bool_type; }; } class Resolvable : public sat::Solvable, sat2::Solvable { public: using Solvable::bool_type; }; only qualifying with ::sat[2]::Solvable::bool_type works.