--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/cpp2a/fn-template3.C	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,29 @@
+// P0846R0
+// { dg-do run }
+// { dg-options "-std=c++2a" }
+
+void g();
+void e();
+void e(int);
+void e(int, int);
+
+namespace N {
+  struct A { };
+  template <class T> int f(T) { return 1; }
+  template <class T> int g(T) { return 2; }
+  template <class T> int e(T) { return 3; }
+}
+
+int
+main ()
+{
+  int v = e<N::A>(N::A());
+  if (v != 3)
+    __builtin_abort ();
+  int x = f<N::A>(N::A());
+  if (x != 1)
+    __builtin_abort ();
+  int y = g<N::A>(N::A());
+  if (y != 2)
+    __builtin_abort ();
+}