--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/concepts/fn-generic-member-ool.C	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,36 @@
+// Out-of-line generic member function definitions.
+// { dg-do compile { target c++14 } }
+// { dg-additional-options "-fconcepts" }
+
+struct A {
+  void f(auto x);
+};
+
+void A::f(auto x) {}  // injects a new list
+
+template <typename T>
+struct B {
+  void f(auto x);
+};
+
+template <typename T>
+void B<T>::f(auto x) {}  // injects a new list
+
+struct C {
+  template <int N>
+  void f(auto x);
+};
+
+template <int N>
+void C::f(auto x) {}  // extends existing inner list
+
+template <typename T>
+struct D
+{
+  template <int N>
+  void f(auto x);
+};
+
+template <typename T>
+template <int N>
+void D<T>::f(auto x) {}  // extends existing inner list