Re: [Threads-devel] [thread] LNK2022 error in VisualStudio 2008 (VC9) C++/CLR code

Subject: Re: [Threads-devel] [thread] LNK2022 error in VisualStudio 2008 (VC9) C++/CLR code
From: mlimber (mlimber_at_[hidden])
Date: 2009-11-03 17:01:57

As here <http://www.svprogramming.net/news/archive.html>, add this to
the problematic file:

namespace boost { struct thread::dummy {}; }

M

On Tue, Nov 3, 2009 at 12:45 PM, Matt Schuckmann
<matt_at_[hidden]>wrote:

> I'm not fully sure if this is a Microsoft problem or a boost problem but
> here goes.
>
> I'm using boost 1.37.0, ( I haven't tested yet but I believe the problem
> will exist with 1.40.0 too)
> The code below compiles and links fine if the /clr switch is off but gives
> a LNK2022 error if it is turned on. The project is a CLR/C++ Class Library
> (i.e. .NET DLL)
>
> Error I'm seeing is:
> ClassLibrary_test.obj : error LNK2022: metadata operation failed (8013119F)
> : A TypeRef exists which should, but does not, have a corresponding TypeDef:
> (dummy): (0x0100001c).
>
> And it appears that the problem has to do with "struct dummy;" declaration
> on line 144 of boost/thread/detail/thread.hpp. Apparently the CLR compiler
> can't deal with an empty undefined struct type even thow I've told the
> compiler to treat all of it as unmanaged code.
>
> Can anyone make any suggestions on how to fix this?
>
> Thanks,
> Matt Schuckmann
>
> File ClassLibrary.h:
> --------------------------------------
> // ClassLibrary_test.h
>
> #pragma once
>
> namespace ClassLibrary_test {
>
> #if defined(_MANAGED)
> public ref class Class1
> #else
> class Class1
> #endif
>  {
>  Class1();
>  };
> }
> -------------------------------------
>
> File ClassLibrary.cpp
> ----------------------------------------------
> #include "ClassLibrary_test.h"
>
> #pragma managed(push, off)
> #include <boost/thread/recursive_mutex.hpp>
> #include <boost/thread/condition.hpp>
> #include <boost/thread/thread.hpp>
> //#pragma managed(pop)
> class MyTest
> {
> protected:
> boost::condition condition;
>  boost::mutex mutex;
>
> public:
> void wait()
> {
>  boost::mutex::scoped_lock lock(mutex);
>  condition.wait(lock);
> }
>
> void notify()
> {
>  condition.notify_all();
> }
> };
>
>
> class MyThread
> {
> public:
> MyThread( MyTest& tst )
>  : t(tst)
> {}
>
> protected:
>  MyTest& t;
> public:
> void operator()()
> {
>  this->t.notify();
> }
> };
>
> #pragma managed(pop)
>
>
> ClassLibrary_test::Class1::Class1()
> {
>  MyTest t;
>  MyThread thrd(t);
>  boost::thread temp(thrd);
>
>  t.wait();
>
> }
> ---------------------------------------------
>
>
>
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