Re: [boost] [assign] ptr_list_of legal?

From: shunsuke (pstade.mb_at_[hidden])
Date: 2007-05-31 05:13:36

Thorsten Ottosen wrote:
>> The rule seems complicated. :-(
>> This is because it requires two user-defined conversions?
>>    generic_ptr_list -> operator auto_ptr() -> operator auto_ptr_ref() -> auto_ptr
>>
>> In the case of lvalue:
>>    generic_ptr_list -> operator auto_ptr&() -> auto_ptr
>>
>> I hope a lawyer will look into this posting. :-)
> 
> ME to.
> 
> It's no secret that some compilers had problems with it, but if IIRC, 
> comeau could do it.

I tried to compile this:

     #include <memory> // auto_ptr

     struct List
     {
         template< class X >
         operator std::auto_ptr<X>() const;
     };

     int main()
     {
         std::auto_ptr<int> a = List();
     }

msvc7.1, msvc8, gcc3.4, gcc4.1 and comeau-online all fails to compile.

Regards,

-- 
Shunsuke Sogame