1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/concepts/req20.C b/gcc/testsuite/g++.dg/concepts/req20.C
new file mode 100644
index 0000000000..0584e98c68
--- /dev/null
+++ b/gcc/testsuite/g++.dg/concepts/req20.C
@@ -0,0 +1,19 @@
+// { dg-options "-std=c++1z -fconcepts" }
+
+template <class T> concept bool C = true;
+
+template <class T>
+requires C<typename T::foo>
+void f(T t) { }
+
+void f(...);
+
+template <class T>
+requires C<T>
+void g(T t) { }
+
+int main()
+{
+  f(42);
+  g(42);
+}