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class Test {
static int count;
static public bool operator == (Test x, Test y)
{
++count;
return false;
}
static public bool operator != (Test x, Test y) { return true; }
public override bool Equals (object o) { return false; }
public override int GetHashCode () { return 0; }
public static void Main ()
{
Test y = new Test ();
if (y == null)
throw new System.Exception ();
if (count != 1)
throw new System.Exception ("Operator == was not called");
}
}
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