Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/gtest-511.cs

@@ -0,0 +1,42 @@
+interface IA : IB
+{
+}
+
+interface IB
+{
+}
+
+class A<T> where T : IA
+{
+}
+
+class C
+{
+	public virtual void Foo<T> (A<T> t) where T : IA
+	{
+	}
+}
+
+class D : C
+{
+	public override void Foo<T> (A<T> t)
+	{
+	}
+	
+	public static int Main ()
+	{
+		new D ();
+		
+		var m = typeof (D).GetMethod ("Foo");
+		var ga = m.GetGenericArguments() [0];
+		
+		var tpConstraints = ga.GetGenericParameterConstraints();
+		if (tpConstraints.Length != 1)
+			return 1;
+		
+		if (tpConstraints [0] != typeof (IA))
+			return 2;
+		
+		return 0;
+	}
+}