2002-05-17 Miguel de Icaza <miguel@ximian.com>

	* ecore.cs (ExplicitReferenceConversionExists): Made public.
	(ImplicitReferenceConversionExists): Split out from
	StandardConversionExists.

	* expression.cs (As): We were only implementing one of the three
	cases for the as operator.  We now implement them all.
	(Is): Implement the various other cases for Is as well.

	* typemanager.cs (CACHE): New define used to control if we want or
	not the FindMembers cache.  Seems to have a negative impact on
	performance currently

	(MemberLookup): Nested types have full acess to
	enclosing type members

	Remove code that coped with instance/static returns for events, we
	now catch this in RealFindMembers.

	(RealFindMembers): only perform static lookup if the instance
	lookup did not return a type or an event.

svn path=/trunk/mcs/; revision=4724

1 files changed, 47 insertions, 0 deletions

diff --git a/mcs/tests/test-123.cs b/mcs/tests/test-123.cs
new file mode 100755
index 00000000000..87f7dbbfe01
--- /dev/null
+++ b/mcs/tests/test-123.cs
@@ -0,0 +1,47 @@
+class X {
+
+	static object get_non_null ()
+	{
+		return new X ();
+	}
+
+	static object get_null ()
+	{
+		return null;
+	}
+	
+	static int Main ()
+	{
+		int a = 5;
+		object o;
+		decimal d = 0M;
+		
+		//
+		// compile time
+		//
+		if (!(get_non_null () is object))
+			return 1;
+
+		if (get_null () is object)
+			return 2;
+
+		if (!(a is object))
+			return 3;
+
+		//
+		// explicit reference
+		//
+		if (null is object)
+			return 4;
+
+		o = a;
+		if (!(o is int))
+			return 5;
+
+		if (d is int)
+			return 6;
+
+		System.Console.WriteLine ("Is tests pass");
+		return 0;
+	}
+}