--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/cpp0x/alias-decl-48.C	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,13 @@
+// PR c++/66289
+// { dg-do compile { target c++11 } }
+
+template<typename T> struct A {};
+
+template<typename T> struct shared_ptr { };
+template<typename T> using APtr = shared_ptr<A<T>>;
+
+template<typename T> struct foo;
+template<typename T> struct foo<shared_ptr<T>> { };
+template<typename T> struct foo<APtr<T>> { };
+
+foo<shared_ptr<A<int>>> aa;