[Mono-list] Possible mcs bug: CS0019 detected for comparable instances
davejp@volny.cz
davejp@volny.cz
Sat, 18 Oct 2003 10:45:50 +0200 (CEST)
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I tried it in Visual Studio .NET 2003.
Compilation successful.
Output:
Is this wrong? False
Help says:
"For reference types other than string, == returns true if its
two operands refer to the same object."
Both baseRef and interfaceRef refer to the same
Test.DerivedClass()
> -----Original Message-----
> From: mono-list-admin@lists.ximian.com [mailto:mono-list-
> admin@lists.ximian.com] On Behalf Of Rodolfo Campero
> Sent: Saturday, October 18, 2003 1:19 AM
> To: mono-list@lists.ximian.com
> Subject: [Mono-list] Possible mcs bug: CS0019 detected for
comparable > instances
>
> 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'
>
> 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 {}
> }
>
> Actually, I haven't checked this narrowed-down version in
Windows, so if a > gentle soul can do this for me in order to
prove that it works I'll > appreciate
> it.
> I've searched bugzilla for this bug but I didn't found it. If
it's right > to
> you, I'll file a bug report after someone verify that the code
works in > Windows.
> I'm using a recent CVS version of mcs and mono, in a RedHat 9
box. > I have a workaround for this problem, so I'm not pressed
with this one... > just
> wanted to let you know.
>
> Thanks in advance,
>
> Rodolfo
>
>
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