Re: [boost] intrusive_ptr and overloading not working under VC++ 8

From: Felipe Magno de Almeida (felipe.m.almeida_at_[hidden])
Date: 2005-12-10 11:35:55

On 12/10/05, David Abrahams <dave_at_[hidden]> wrote:

[snip]

>
> That isn't really a complete solution:
>
>  struct Base {};
>  struct Derived : Base {};
>  struct Bottom : Derived {};
>
>  int f(shared_ptr<Base>);      // #1
>  int f(shared_ptr<Derived>);   // #2
>
>  shared_ptr<Bottom> x(new Bottom);
>  int y = f(x);                 // Should call #2, but is ambiguous
>
> will still fail, and there's not really any way to make it work.

But at least completely unmatchable choices wont get in the way,
turning a completely legitimate call an ambigous one.
As was stated in another thread:

struct A {};
struct B {};
struct C : B {};

void foo(shared_ptr<A>);
void foo(shared_ptr<B>);

foo(new C());

doesnt work because of A, that has nothing to do with A...

IMHO, being able to do this is a must.

>
> --
> Dave Abrahams
> Boost Consulting
> www.boost-consulting.com
>
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