Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/gtest-610.cs

@@ -0,0 +1,35 @@
+using System;
+
+class G1<T1, T2>
+	where T1 : B
+	where T2 : T1
+{
+	public static T2 Test1 (B b)
+	{
+		return (T2)b;
+	}
+
+	public static T2 Test2 (A a)
+	{
+		return (T2)a;
+	}
+
+	public static T2 Test3 (dynamic a)
+	{
+		return (T2)a;
+	}
+}
+
+class B : A
+{
+}
+
+class A
+{
+	static void Main ()
+	{
+		G1<B, B>.Test1 (new B ());
+		G1<B, B>.Test2 (new B ());
+		G1<B, B>.Test3 (null);
+	}
+}