Implement binary user operators over nullable not lifted expressions.

1 files changed, 42 insertions, 0 deletions

diff --git a/mcs/tests/gtest-139.cs b/mcs/tests/gtest-139.cs
new file mode 100644
index 00000000000..435598de5e1
--- /dev/null
+++ b/mcs/tests/gtest-139.cs
@@ -0,0 +1,42 @@
+using System;
+
+public struct MyStruct
+{
+	public static int operator !=(MyStruct? a, string b)
+	{
+		return -1;
+	}
+	
+	public static int operator ==(MyStruct? a, string b)
+	{
+		return 1;
+	}
+	
+	public static int operator !=(string a, MyStruct? b)
+	{
+		return -2;
+	}
+	
+	public static int operator ==(string a, MyStruct? b)
+	{
+		return 2;
+	}
+}
+
+public class Test
+{
+	public static int Main()
+	{
+		MyStruct? ms = new MyStruct ();
+		int v;
+		v = ms == "a";
+		if (v != 1)
+			return 1;
+		
+		v = "b" != ms;
+		if (v != -2)
+			return 2;
+		
+		return 0;
+	}
+}
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