[Mono-bugs] [Bug 69057][Maj] New - multi level inheritance duplicates

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Changed by tsureshkumar@novell.com.

http://bugzilla.ximian.com/show_bug.cgi?id=69057

--- shadow/69057	2004-11-03 10:11:03.000000000 -0500
+++ shadow/69057.tmp.2622	2004-11-03 10:11:04.000000000 -0500
@@ -0,0 +1,84 @@
+Bug#: 69057
+Product: Mono: Compilers
+Version: unspecified
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Major
+Component: C#
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: tsureshkumar@novell.com               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: multi level inheritance duplicates
+
+Description of Problem:
+
+While implementing two interfaces, of which one is derived from other, I am
+getting an error.
+
+Steps to reproduce the problem:
+1. compile the attached program
+
+Actual Results:
+> gmcs mytest.cs
+ALPHA SOFTWARE: Mono C# Compiler 1.1.1.0 for Generics
+mytest.cs(14) error CS0695: `MyTest`2<K,V>' cannot implement both
+`ITest`1<System.Collections.Generic.KeyValuePair`2<K,V>>' and
+`ITest`1<System.Collections.Generic.KeyValuePair`2<K,V>>' because they may
+unify for some type parameter substitutions
+Compilation failed: 1 error(s), 0 warnings
+
+
+Expected Results:
+Compilation Succeeded
+
+How often does this happen? 
+Always
+
+Additional Information:
+
+Test Program 
+
+using System;
+using System.Collections.Generic;
+
+public interface ITest <T>
+{
+        void Add ();
+}
+
+public interface ITest2 <K,V> : ITest <KeyValuePair <K,V>>
+{
+        void Subtract ();
+}
+
+public class MyTest <K,V> : ITest2 <K,V>, ITest <KeyValuePair <K,V>>
+{
+        public void Add ()
+        {
+                Console.WriteLine ("I am Add");
+        }
+
+        public void Subtract ()
+        {
+                Console.WriteLine ("I am subtract");
+        }
+
+}
+
+public class MainClass
+{
+
+        public static void Main (string [] args)
+        {
+                MyTest<string,string> mytest = new MyTest<string,string> ();
+                mytest.Add ();
+                mytest.Subtract ();
+        }
+        
+}