TypeLoadException - generic in class attribute - C++/CLI Compiler

From:
=?Utf-8?B?TWFydGluIFplbmtlbA==?= <harrison.george@lycos.de>
Newsgroups:
microsoft.public.vc.language
Date:
Tue, 26 May 2009 00:33:05 -0700
Message-ID:
<6A1FEC20-9AAD-4D68-9D2D-7E4787B84295@microsoft.com>
Using a generic type information as a class attribute parameter I get a
TypeLoadException at runtime (with C++/CLI). This exception occurs if the
generic parameter is defined in one assembly and used in another. Using C# no
exception is thrown - everything works perfect.

I'm using VS2008 Team System with .net Framework 3.5 SP1. The Behaviour is
the same with VS2010-beta1, .net 4.0.

Assembly/class structure for illustration:

---------
Assembly1

generic<typename T>
public ref class G
{
};

public ref class SettingsAttribute: Attribute
{
public:
    SettingsAttribute(System::Type^ type):
        _Type(type)
    {
    }
private:
    System::Type^ _Type;
};

---------
Assembly2

[SettingsAttribute(G<int>::typeid)]
public ref class C
{
}

public ref class TestClass
{
public:
    void TestMethod()
    {
        G<int>^ g = gcnew G<int>(); //works
        C::typeid->GetCustomAttributes(SettingsAttribute::typeid);
//TypeLoadException!
    }
}

---------
With the namespace set to "TestNS" the IL code looks like this.

The C++/CLI compiler decorates class C with wrong meta information
"[mscorlib]TestNS.G`1":
    .custom instance void [Assembly1]TestNS.SettingsAttribute::.ctor(class
[mscorlib]System.Type) = { type([mscorlib]TestNS.G`1<int32>) }

The C# compiler does it correctly:
    .custom instance void [Assembly1]TestNS.SettingsAttribute::.ctor(class
[mscorlib]System.Type) = { type([Assembly1]TestNS.G`1<int32>) }
 
---------
Is there any solution or workaround for this problem? Thank you in advance.

Martin

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