C# 4.0 Compiler Crash

Question

This code sample is not able to be compiled. Any work arounds out there?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

n         


        

Answer 1

I reproduced the crash using VS2010 (WinXP 64).

Two workarounds:

1. don't use the using alias

The following code compiles cleanly on VS2010:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Func True = (a, b) => a;
            Func False = (a, b) => b;

            Func, 
                 Func,
                 Func > And 
                = (x, y) => x(y(True, False), False);
        }
    }
}

2. use the Mono compiler

No problem with Mono 2.10 compiler (dmcs).

[mono] /tmp @ dmcs test.cs
test.cs(18,42): warning CS0219: The variable `And' is assigned but its value is never used
Compilation succeeded - 1 warning(s)
[mono] /tmp @ ./test.exe 
[mono] /tmp @ 

This was tested on linux.

1. You can run binaries created with mono on Windows .NET.
2. Mono compiler comes with an installer MSI and runs on Windows as well.