using System.CodeDom.Compiler;
using System.Reflection;

namespace ReflectionIssue
{
    class Program
    {
        static void Main(string[] args)
        {
            CompilerParameters cp = new CompilerParameters();
            cp.GenerateInMemory = true;
            cp.GenerateExecutable = false;

            string[] sources = new string[1];
            sources[0] =
                @"
                using System.Collections.Concurrent;
                public static class TestClass
                {
                    public static void TestMethod()
                    {
                        //ConcurrentBag<int> a = new ConcurrentBag<int>(); // FAILS IF NOT COMMENTED OUT - WTF
                        ConcurrentDictionary<int, int> b = new ConcurrentDictionary<int, int>();
                        ConcurrentQueue<int> c = new ConcurrentQueue<int>();
                        ConcurrentStack<int> d = new ConcurrentStack<int>();
                    }
                }
            ";

            CompilerResults r = CodeDomProvider.CreateProvider("CSharp").CompileAssemblyFromSource(cp, sources);
            Assembly asm = r.CompiledAssembly;
        }
    }
}