We fail on this variation of CS0121, where an interface has two identical methods from base interfaces, leaving an ambigious call

svn path=/trunk/mcs/; revision=21571

1 files changed, 31 insertions, 0 deletions

diff --git a/mcs/errors/cs0121-2.cs b/mcs/errors/cs0121-2.cs
new file mode 100644
index 00000000000..3adea7a8f27
--- /dev/null
+++ b/mcs/errors/cs0121-2.cs
@@ -0,0 +1,31 @@
+// cs0121-2.cs: ambigous call selecting between `IFoo.DoIt ()' and `IBar.DoIt ()'
+// Line: 9
+
+class A : IFooBar {
+	static void Main ()
+	{
+		A a = new A ();
+		IFooBar fb = (IFooBar) a;
+		fb.DoIt ();
+	}
+
+	void IFoo.DoIt ()
+	{
+		System.Console.WriteLine ("void IFoo.DoIt ()");
+	}
+
+	void IBar.DoIt ()
+	{
+		System.Console.WriteLine ("void IBar.DoIt ()");
+	}
+}
+
+interface IFoo {
+	void DoIt ();
+}
+
+interface IBar {
+	void DoIt ();
+}
+
+interface IFooBar : IFoo, IBar {}
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