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The following piece of code :
static void Main(string args)
ConcurrentDictionary<string, string> theDict = new ConcurrentDictionary<string, string>();
string nullString = null;
theDict.TryUpdate("key", "hello", null);
catch (Exception e)
Throws an exception on Mono :
Object reference not set to an instance of an object
on .NET 4.0 no exception is thrown.
Mono Setup is :
Mono JIT compiler version 3.10.0 ((no/633e444 Wed Nov 12 15:36:54 GMT 2014)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
LLVM: supported, not enabled.
Fixed in Mono 4.0