Re: [Boost-users] [ptr_container] linker error

From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2006-11-17 11:26:30

Mark Snelling wrote:
> Hi,
> 
> I'm having trouble using the boost::ptr_container library. I seem to get 
> this linker error with the code below under MSVC8.
> 

> typedef boost::ptr_list< Test > MyList;
> typedef MyList::auto_type TestPtr;
> 
> struct MyClass
> {
>     MyList theList;
> 
>     void push( TestPtr& t )
>     {

void push( Test* );

>         theList.push_back ( t.release() );
>     }
> 
>     TestPtr pop()

std::auto_ptr<Test> pop();

>     {
>         TestPtr t = theList.pop_front();
>         return t;
>     }
> };
return theList.pop_front().release();

> I'm not aware of the ptr_container library having an import library and 
> am at a loss at why this error is occurring, although it seems to be 
> with the MyClass::pop() method. Is it because it's returning the 
> auto_type by value? If so what are the alternatives?

auto_type is not copyable, so yes, this is probably your error.

Try the interface modifications I suggest above

-Thorsten