[boost] Re: Optional update

From: Daniel Yerushalmi (daniel_zy_at_[hidden])
Date: 2003-01-28 03:04:42

In visual C 7
The result are:
c:\develop\FreeSearch\IndexBuilder\test.cpp(13) : error C2059: syntax error
: '<'
        c:\develop\FreeSearch\IndexBuilder\test.cpp(14) : see reference to
class template instantiation 'Y' being compiled
c:\develop\FreeSearch\IndexBuilder\test.cpp(13) : error C2065: 'U' :
undeclared identifier
c:\develop\FreeSearch\IndexBuilder\test.cpp(13) : error C2238: unexpected
token(s) preceding ';'
c:\develop\FreeSearch\IndexBuilder\test.cpp(16) : error C2955: 'X' : use of
class template requires template argument list
        c:\develop\FreeSearch\IndexBuilder\test.cpp(7) : see declaration of
'X'
c:\develop\FreeSearch\IndexBuilder\test.cpp(16) : error C2955: 'X' : use of
class template requires template argument list
        c:\develop\FreeSearch\IndexBuilder\test.cpp(7) : see declaration of
'X'
c:\develop\FreeSearch\IndexBuilder\test.cpp(17) : error C2955: 'Y' : use of
class template requires template argument list
        c:\develop\FreeSearch\IndexBuilder\test.cpp(14) : see declaration of
'Y'
c:\develop\FreeSearch\IndexBuilder\test.cpp(17) : error C2955: 'Y' : use of
class template requires template argument list
        c:\develop\FreeSearch\IndexBuilder\test.cpp(14) : see declaration of
'Y'
c:\develop\FreeSearch\IndexBuilder\test.cpp(21) : error C2512: 'X' : no
appropriate default constructor available
        with
        [
            T=int
        ]
c:\develop\FreeSearch\IndexBuilder\test.cpp(23) : fatal error C1903: unable
to recover from previous error(s); stopping compilation
      Results

"Fernando Cacciola" <fernando_cacciola_at_[hidden]> wrote in message
news:b1493b$h35$1_at_main.gmane.org...
>
> "Fernando Cacciola" <fernando_cacciola_at_[hidden]> wrote in message
> news:OE22PDH8qHNwK39FMZW0000274c_at_hotmail.com...
> > I've fixed Optional for MSV6.0
> > Once the regression tests are updated, I'll see if I can fix it for the
> > other compilers too.
> >
> I'm looking at the new regression tests. VC6.0 finally works, but not so
> VC7.0
> I don't have VC >=7.0, so I'm trying to guess the problem.
>
> Could someone with access to vc7.0/7.1 try the following and report the
> compiler output? My guess is that vc7.0 (at least) still has problems when
> both non-template and (explicit?) template copy-ctors are present.
>
> template<class T>
> struct X
> {
>   X ( X const& ) ;
>   template<class U> X ( X<U> const& ) ;
> } ;
>
> template<class T>
> struct Y
> {
>   Y ( Y const& ) ;
>   explicit template<class U> Y ( Y<U> const& ) ;
> } ;
>
> void eat ( X ) ;
> void eat ( Y ) ;
>
> int main()
> {
>   X<int> x1 ;
>   X<int> x2 = x1;
>   eat(x1);
>
>   Y<int> y1 ;
>   Y<int> y2 = y1;
>   eat(y1);
> }
>
> TIA,
>
> --
> Fernando Cacciola
>
>
>
>
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