Hello,
> I'm trying to port an application I'm developing at work. Over there we use
> Microsoft .Net SDK.
> When I tried to compile it in mono I got:
>
> error CS0019: Operator != cannot be applied to operands of type `xxx' and
> `yyy'
>From my reading of the ECMA spec, this is a bug in the Microsoft C#
compiler.
Section 14.9.6 "Reference type equality operators" states that there
must be a standard implicit conversion from the type of either operand
to the type of the other operand.
Miguel
> I've narrowed down the problem and the smallest program which reproduces the
> error is the following one:
>
> using System;
> namespace Test {
> public class Test {
> public static void Main(string[] args) {
> BaseClass baseRef = new DerivedClass();
> ITest interfaceRef = (ITest)baseRef;
> Console.WriteLine("Is this wrong? {0}",
> (interfaceRef!=baseRef));
> }
> }
>
> public interface ITest {}
>
> public class BaseClass {}
>
> public class DerivedClass: BaseClass, ITest {}
> }
>
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