[Mono-bugs] [Bug 450530] New: GMCS error CS0654 Method is referenced without parentheses

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=450530


           Summary: GMCS error CS0654 Method is referenced without
                    parentheses
           Product: Mono: Compilers
           Version: 2.0.x
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: C#
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: petee at mindtouch.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: Community User


Basically, the error only occurs if a method has overloads to either accept a
value or a delegate that returns that same value. In that case, when you pass
the a function that returns that value, mono thinks you are trying to call the
one that takes the value and forgot the parentheses.
-------------------------
using System;

namespace MonoTester {
   public delegate Value Handler();
   class Program {
       static void Main(string[] args) {
           Do(Value.Default);
           Do(Value.Default());
       }
       public static void Do(Value v) {}
       public static void Do(Handler h) {}
   }
   public class Value {
       public static Value Default() {
           return new Value();
       }
   }
}

-------------------------------------
Macintosh-3:mono arne$ gmcs Program.cs
Program.cs(7,22): error CS0654: Method `MonoTester.Value.Default()' is
referenced without parentheses
Compilation failed: 1 error(s), 0 warnings


However this second version works fine... no idea why. Because the Method being
passes is in the same class?
-----------------------------------------
namespace MonoTester {
   public delegate Value Handler();
   class Program {
       static void Main(string[] args) {
           Do(Program . Default);
           Do(Program . Default());
       }
       public static void Do(Value v) {}
       public static void Do(Handler h) {}
       public static Value Default() { return null; }
   }
   public class Value {
   }
}


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