[Mono-bugs] [Bug 324996] [GMCS] CS0184 always reported using is operator on nullable

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Fri Nov 9 17:55:08 EST 2007


Gert Driesen <gert.driesen at pandora.be> changed:

           What    |Removed                                         |Added
             Status|RESOLVED                                        |REOPENED
         Resolution|FIXED                                           |

--- Comment #3 from Gert Driesen <gert.driesen at pandora.be>  2007-11-09 15:55:07 MST ---
Marek, you're wrong about this. A nullable int is of course not always an int.

Try compiling and running the following code:

using System;

class Program
        static void Main ()
                int? i = null;
                if (i is int) {
                        Console.WriteLine ((int) i + 3);

When compiled with gmcs, this results in an InvalidOperationException (Nullable
object must have a value), while it should not.

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