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Subject: Re: [boost] Need help with workaround for MSVC bug
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2009-09-17 16:46:57

Emil Dotchevski wrote:
> On MSVC, the following correct code produces error C2896: 'void
> operator ||(T,void (__cdecl *)(tag<X>))' : cannot use function
> template 'void bar(tag<X>)' as a function argument.
> struct foo { };
> template <int X>
> struct tag { };
> template <int X>
> void bar( tag<X> ) { }
> template <class T,int X>
> void operator||(T, void(*)(tag<X>)) { }
> int main()
> {
> foo()||bar<1>;
> }

I think the problem is that the function template is a __thiscall * rather than the default __cdecl *. Thus, for MSVC (only), adding the following might solve your problem:

   template <class T, int X>
   void operator ||(T, void (__thiscall *)(tag<X>))

Rob Stewart robert.stewart_at_[hidden]
Software Engineer, Core Software using std::disclaimer;
Susquehanna International Group, LLP

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