Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

mcs/tests/gtest-630.cs

@@ -0,0 +1,25 @@
+public interface IA
+{
+	int Foo (int x = 0);
+}
+
+public class A : IA
+{
+	public int Foo (int x)
+	{
+		return x;
+	}
+
+	private static int Bar<T> (T x) where T : A, IA
+	{
+		return x.Foo ();
+	}
+
+	public static int Main ()
+	{
+		if (Bar (new A ()) != 0)
+			return 1;
+
+		return 0;
+	}
+}