Re: Workaround for partial specialization wanted

From:
"Matthias Hofmann" <hofmann@anvil-soft.com>
Newsgroups:
comp.lang.c++.moderated
Date:
Fri, 23 Nov 2007 15:02:44 CST
Message-ID:
<5qof0aF10vromU1@mid.individual.net>
"Matthias Hofmann" <hofmann@anvil-soft.com> schrieb im Newsbeitrag
news:5qaovmFud3k7U1@mid.individual.net...

I thought I could work around the problem with the following code, but
unfortunately this gives me an "internal compiler error":

class X
{
   void* f( void* ptr )
   {
       return ptr;
   }

public:
   template <class T> static T* f( X& x, T* ptr )
   {
       return static_cast<T*>( x.f( ptr ) );
   }
};

int main()
{
   int i;

   X x;

   // fatal error C1001: INTERNAL COMPILER ERROR
   X::f<int>( x, &i );

   return 0;
}

Even installing Service Pack 6 did not help.


I think I finally found a workaround for my problem! :-) The trick is to
use
a friend rather than a static member function:

class X
{
     void* f( void* ptr )
     {
         return ptr;
     }

     template <class T> friend T* f( X&, T* );
};

template <class T> T* f( X& x, T* ptr )
{
     return static_cast<T*>( x.f( ptr ) );
}

int main()
{
     int i;

     X x;

     f<int>( x, &i );

     return 0;
}

Together with boost::remove_extent, I think I will now be able to port my
code to Microsoft Visual C++ 6.0! :-)

--
Matthias Hofmann
Anvil-Soft, CEO
http://www.anvil-soft.com - The Creators of Toilet Tycoon
http://www.anvil-soft.de - Die Macher des Klomanagers

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