[Mono-list] String.Join NullReferenceException

[Rodolfo Campero]

Hi,
I've found something that maybe is a bug. When I run the following program:

using System;
namespace Test {
	public class TestJoin {
		public static void Main(string[] args) {
			string[] array = new string[] {"hello ", null, "world!"};
			Console.WriteLine(String.Join(String.Empty, array));
		}
	}
}

I get the following error:

Unhandled Exception: System.NullReferenceException: A null value was found 
where an object instance was required

I've tested the same program at work, with Microsoft's SDK (1.0), and it 
prints
the well-known "hello world!" message.

Is this a bug? can someone corroborate it under mono and under .NET 1.1? If
that's the case, I'll be happy to write a test case (please indicate me 
where)
and fill a form in bugzilla.

I tried to follow the implementation in String.cs, but the actual 
implementation
is somewhere else; so I guess the fix may require more knowledge than I 
have...

Thanks,

Rodolfo

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