Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs0612-5.cs

@@ -0,0 +1,26 @@
+// CS0612: `O2' is obsolete
+// Line: 23
+// Compiler options: -warnaserror
+
+using System;
+
+[Obsolete]
+interface O2
+{
+}
+
+#pragma warning disable 612
+class A
+{
+	public virtual void Foo<T> () where T : O2
+	{
+	}
+}
+#pragma warning restore 612
+
+class B : A
+{
+	public override void Foo<U> ()
+	{
+	}
+}