id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
3465	MSVC fails to compile intrusive when in DLL interface	wim@…	Ion Gaztañaga	"This program:

#include <boost/intrusive/list.hpp>
class __declspec(dllexport) A : public boost::intrusive::list_base_hook<>
{
};


Yields this error on MSVC 2005 (similar on MSVC 2008), when compiling to a DLL:

1>C:\...\boost/intrusive/detail/generic_hook.hpp(191) : error C2027: use of undefined type 'boost::STATIC_ASSERTION_FAILURE<x>'
1>        with
1>        [
1>            x=false
1>        ]
1>        C:\...\boost/intrusive/detail/generic_hook.hpp(190) : while compiling class template member function 'void boost::intrusive::detail::generic_hook<GetNodeAlgorithms,Tag,LinkMode,HookType>::unlink(void)'
1>        with
1>        [
1>            GetNodeAlgorithms=boost::intrusive::get_list_node_algo<void *>,
1>            Tag=boost::intrusive::default_tag,
1>            LinkMode=safe_link,
1>            HookType=1
1>        ]
1>        C:\...\boost/intrusive/list_hook.hpp(94) : see reference to class template instantiation 'boost::intrusive::detail::generic_hook<GetNodeAlgorithms,Tag,LinkMode,HookType>' being compiled
1>        with
1>        [
1>            GetNodeAlgorithms=boost::intrusive::get_list_node_algo<void *>,
1>            Tag=boost::intrusive::default_tag,
1>            LinkMode=safe_link,
1>            HookType=1
1>        ]
1>        .\main.cpp(5) : see reference to class template instantiation 'boost::intrusive::list_base_hook<>' being compiled

If the dllexport is removed, the program compiles fine. When the unlink() method is commented out in generic_hook.hpp, the program compiles fine. We discovered this because our library compiles as a static library, but not as a DLL.

I wanted to work around this by using auto_unlink hooks instead of safe_link hooks, but then I get this error when I create a list:
1>C:\...\boost/intrusive/list.hpp(125) : error C2027: use of undefined type 'boost::STATIC_ASSERTION_FAILURE<x>', which is a similar problem.

I could not find a clean way to disable static assertions, or another workaround to allow compilation without modifications to boost. Any suggestions? I currently resorted to adding this hack in files that include intrusive headers:
#if defined(WIN32) && defined(wt_EXPORTS)
namespace boost {
  template<bool x> struct STATIC_ASSERTION_FAILURE { enum { value = 1 }; };
}
#endif

"	Bugs	closed	Boost 1.41.0	intrusive	Boost 1.44.0	Problem	wontfix