Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/gtest-486.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+
+interface IMyCollection<T> : ICollection<T> {
+
+}
+
+class MyCollection<T> : IMyCollection<T> {
+
+    public void AddRange(IMyCollection<T> items) {
+    }
+
+    public void AddRange(IEnumerable<T> items) {
+    }
+
+    public int Count { get { return 0; } }
+
+    public bool IsReadOnly { get { return false; } }
+
+    public void Add(T item) { }
+
+    public void Clear() { }
+
+    public bool Contains(T item) { return false; }
+
+    public void CopyTo(T[] a, int i) { }
+
+    public bool Remove(T item) { return false; }
+
+    public IEnumerator<T> GetEnumerator() { return null; }
+
+    System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return null; }
+
+}
+
+class P {
+
+    static protected MyCollection<String> foo = new MyCollection<String>();
+
+    static protected MyCollection<String> bar = new MyCollection<String>();
+
+    static public MyCollection<String> IgnoreTokens {
+        get {
+            if (foo.Count == 0)
+                foo.AddRange(bar);  // false error on Mono 2.0 and 2.4: The call is ambiguous between...
+            return foo;
+        }
+    }
+
+    public static void Main()
+	{
+    }
+
+}