https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106756
Bug ID: 106756 Summary: Overbroad friendship for nested classes Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: herring at lanl dot gov Target Milestone: --- Sometime since 12.2, GCC has started accepting struct A { struct B { friend int f(B*) {return i;} }; private: static int i; }; despite the express limitation in [class.nest]/4 (/3 in the latest draft). (Current Clang also accepts it, but ICC and MSVC do not.)