Re: [Boost-users] [non Boost] Template troubles.

Subject: Re: [Boost-users] [non Boost] Template troubles.
From: Kim Kuen Tang (kuentang_at_[hidden])
Date: 2008-12-11 13:24:05

Hi all,

this is what i get from msvc 2008
'void assign(T &,const T &)' : template parameter 'T' is ambiguous
1>        : see declaration of 'assign'
1>        could be 'const int [4]'
1>        or       'int [4]'

I hope that this help you.

Robert Jones schrieb:
> Ok, first off, this is not explicitly about Boost, which I know is 
> against the
> Boost guidelines, but I hope you'll all forgive me. Indirectly it is 
> through trying
> to use Boost that i've bumped into this.
> 
> A little code snippet...
> 
> #include <cstddef>
> 
> template < typename T, std :: size_t sz >
>   struct Block
> {
>   typedef T type[ sz ][ sz ];
> };
> 
> template < typename T >
>   void assign( T & assignee, const T & value );
> 
> template < typename T, std :: size_t sz >
>   void assign( T ( & assignee )[ sz ], const T ( & value )[ sz ] );
> 
> int main( )
> {
>   Block< int, 16 > :: type a;
>   const Block< int, 16 > :: type b = { };
> 
>   assign( a, b );
> }
> 
> This compiles under Gcc & Comeau, but MS VisStudio reckons the call
> to assign in main is ambiguous. Any thoughts?
> 
> Also, if I put all the template declarations in an anonymous namespace, 
> Comeau
> fails to compile, while Gcc is still ok!
> 
> Have we encountered this before, and is there a known work around?
> 
> Thanks.
> 
> - Rob.
> 
> 
> 
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