Do expansion of generic interfaces members without recursion

1 files changed, 32 insertions, 0 deletions

diff --git a/mcs/tests/gtest-572.cs b/mcs/tests/gtest-572.cs
new file mode 100644
index 00000000000..ec043ca7be6
--- /dev/null
+++ b/mcs/tests/gtest-572.cs
@@ -0,0 +1,32 @@
+using System.Collections.Generic;
+
+interface IC<T> : IB<T>, IEnumerable<T>
+{
+}
+
+interface IB<V> : IA<V>
+{
+}
+
+interface IA<W> : IEnumerable<W>
+{
+}
+
+class C : IC<short>
+{
+	public IEnumerator<short> GetEnumerator ()
+	{
+		return null;
+	}
+
+	System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator ()
+	{
+		throw new System.NotImplementedException ();
+	}
+
+	public static void Main ()
+	{
+		IC<short> ic = new C ();
+		var m2 = ic.GetEnumerator ();
+	}
+}
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