--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/concepts/pr60390.C	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,26 @@
+// PR c++/60390
+// { dg-do compile { target c++14 } }
+// { dg-additional-options "-fconcepts" }
+
+struct A
+{
+  void foo (auto);
+};
+
+class B
+{
+  int m;
+  friend void A::foo (auto);
+};
+
+void A::foo (auto i)
+{
+  B b;
+  b.m = i;
+}
+
+int main ()
+{
+  A a;
+  a.foo (7);
+}