[Insight-developers] GetInverseTransform - MSVC 6 instantiation bug

[Bill Lorensen]

Luis,

Look at vnl_matrix_fixed.h. They have some kind of a VS6 workaround.

Bill

On Thu, Apr 9, 2009 at 10:14 AM, Luis Ibanez <luis.ibanez at kitware.com> wrote:
> Hi Tom,
>
> Here is what I have found so far:
> The problem in VS6.0 can be replicated with the following minimal code:
>
>
> template <class T, unsigned int N, unsigned int M>
> class FOO
> {
> public:
>  typedef T  SomeTrait;
>  typedef FOO<T,M,N> BAR;
>  typedef typename BAR::SomeTrait  BARTrait;   // <<-----THIS
>
>  BAR GetInverse()
>    {
>    BAR a;
>    return a;
>    }
> };
>
>
> int main()
> {
>   typedef FOO<float, 3, 2>  FooType;
>   FooType foo;
>   FooType::BAR at = foo.GetInverse();
>   return 0;
> }
>
>
> This generates the now familiar-looking compilation error:
>
> G:\bin\TenplateRecurssion\main.cxx(10) : error C2027: use of undefined
> type 'FOO<float,3,2>'
>        G:\bin\TenplateRecurssion\main.cxx(10) : see reference to
> class template instantiation 'FOO<float,2,3>' being compiled
>        G:\bin\TenplateRecurssion\main.cxx(24) : see reference to
> class template instantiation 'FOO<float,3,2>' being compiled
> Error executing cl.exe.
>
> TenplateRecurssion.exe - 1 error(s), 0 warning(s)
>
>
> Note the transposition of 3,2 and 2,3.
>
> The line with the "THIS" label is the one that triggers the compilation error.
>
> As you pointed out, it seems that we are missing to use some
> mechanism for forcing VS6.0 to instantiate the InverseType,
> before we attempt to use a trait from it.
>
> ...still looking into it...
>
>
>
>   Luis
>
>
>
>
> --------------------------------------------------------------------------
> On Thu, Apr 9, 2009 at 9:33 AM, Luis Ibanez <luis.ibanez at kitware.com> wrote:
>>
>> Starting up my Visual Studio 6.0 compiler...
>>
>> It's going to be long morning...
>>
>>
>>
>>     Luis
>>
>>
>> -----------------------
>> Tom Vercauteren wrote:
>>>
>>> Hi all,
>>>
>>> The dashboard is giving me the following error on visual 6 compiler:
>>>
>>> c:\Dashboards\My
>>> Tests\InsightContinuous\Code\Common\itkTransform.h(120) : error C2027:
>>> use of undefined type 'Transform<double,3,2>'
>>>
>>>        c:\Dashboards\My
>>> Tests\InsightContinuous\Code\Common\itkTransform.h(120) : see
>>> reference to class template instantiation 'itk::Transform<double,2,3>'
>>> being compiled
>>>        c:\Dashboards\My
>>> Tests\InsightContinuous\Code\Common\itkRigid3DPerspectiveTransform.h(42)
>>> : see reference to class template instantiation
>>> 'itk::Transform<double,3,2>' being compiled
>>>        c:\Dashboards\My
>>> Tests\InsightContinuous\Code\Common\itkTransformFactory.h(37) : see
>>> reference to class template instantiation
>>> 'itk::Rigid3DPerspectiveTransform<double>' being compiled
>>>        c:\Dashboards\My
>>> Tests\InsightContinuous\Code\Common\itkTransformFactory.h(36) : while
>>> compiling class-template member function 'void __cdecl
>>> itk::TransformFactory<class itk::Rigid3DPerspectiveTransform<double>
>>>
>>>> ::RegisterTransform(void)'
>>>
>>>
>>> http://www.cdash.org/CDash/viewBuildError.php?buildid=309403
>>>
>>> Can anyone help me understand what this means?
>>>
>>> I initially thought that this might be related to explicit
>>> instantiation since itk::Transform<double,3,2> is not listed in:
>>>
>>> http://www.itk.org/cgi-bin/viewcvs.cgi/Wrapping/ExplicitITK/Modules/Common/wrap_itkTransform.cmake?root=Insight&sortby=date&view=markup
>>>
>>> Note that I am not even sure that wrap_itkTransform.cmake is the
>>> correct file to look at since I have never worked with explicit
>>> instantiations within ITK before and since I can't manage to compile
>>> ITK with explicit instantiations turned on on my machine.
>>>
>>> Also it seems that dash13 is not using  explicit instantiations:
>>> http://www.cdash.org/CDash/testDetails.php?test=20260566&build=308626
>>>
>>> Thanks for your help.
>>>
>>> Tom
>>> _______________________________________________
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>>
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