http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32204
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Known to work| |4.6.3, 4.7.0, 4.8.0 Resolution| |FIXED Target Milestone|--- |4.6.0 Known to fail| |4.5.1 --- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-03-26 23:51:26 UTC --- G++ 4.6.0 and later correctly compile this namespace A { template < class PIX > class B; } void f(A::B<int>&); template < class PIX > class A::B { friend void ::f(A::B<int>&); PIX z; }; void f(A::B<int>& i) { int a = i.z; } int main() { A::B<int> b; f(b); // 1. error: f is ambiguous (no, there is no 2nd declaration!) ::f(b); // 2. error: z is private (yes, but 'f' is a friend) // A::f(b); // 3. error: f is not a member of A (of course) } So I think this bug is fixed