gcc/testsuite/g++.dg/parse/elab2.C - gcc - Git at Google

 struct A {};

 struct B
 {
   typedef A T; // { dg-message "previous declaration" }
   friend struct T; // { dg-error "" }
 };
	struct A {};

	struct B
	{
	typedef A T; // { dg-message "previous declaration" }
	friend struct T; // { dg-error "" }
	};