TypeLoadException due to BLOCK_REGION_UNION about vanara HOT 5 CLOSED

Hm. The reason it shows up is probably because I'm using MEF in this project, which scans over all referenced assemblies and their types, forcing them to be loaded.

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Happens both with 2.3.9 and 2.3.10.

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I applied and posted a fix just now that should resolve this issue. If you can build, please test. Otherwise, I'll include in my next release.

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I think a simple test case would be something along these lines:

using System;
using System.IO;
using System.Reflection;
using System.Runtime.CompilerServices;

class Program
{
    static void Main()
    {
        foreach (var file in Directory.EnumerateFiles(".", "Vanara*.dll"))
            foreach (var type in Assembly.LoadFrom(file).DefinedTypes)
                RuntimeHelpers.RunClassConstructor(type.TypeHandle);
    }
}

Place all the Vanara assemblies next to this program and it'll load all of them and force all types (nested or otherwise) in them to be initialized, which will result in exception(s) if any of them have invalid layout.

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Fixed and released today in 2.3.11

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