Imported Upstream version 4.8.0.371

Former-commit-id: 1cedda3b6a8e480191a7a40a8dc33eb078fba58b

mcs/tests/gtest-641-lib.cs

@@ -0,0 +1,15 @@
+// Compiler options: -t:library
+
+public class Foo<T>
+{
+	public class Bar
+	{
+		public class FooBar : System.IEquatable<FooBar>
+		{
+			public bool Equals(FooBar a)
+			{
+				return true;
+			}
+		}
+	}
+}

mcs/tests/gtest-641.cs

@@ -0,0 +1,11 @@
+// Compiler options: -r:gtest-641-lib.dll
+
+using System;
+
+class SomeClass
+{
+	public static void Main ()
+	{
+		IEquatable<Foo<int>.Bar.FooBar> a = new Foo<int>.Bar.FooBar ();
+	}
+}