Re: Pimpl using auto_ptr
* Barry:
Alf P. Steinbach wrote:
Forgot to mention: for that workaround the public class also needs
non-inline constructor, so that the std::auto_ptr is constructed by
the code in the implementation file.
This is not necessary
It is.
struct X;
X* px = 0; // if this is not illformed -- condition1
This is OK.
<code>
#include <memory>
struct Wrapper {
Wrapper() : sp_(/*0*/) {}
~Wrapper();
private:
struct Impl;
std::auto_ptr<Impl> sp_;
};
struct Wrapper::Impl {};
Wrapper::~Wrapper() {}
int main()
{
Wrapper w;
}
</code>
This is not PIMPL. The point of PIMPL is to have the definition of
Wrapper::Impl in a separately compiled file.
if condition1 is true, then the code above is well-formed
See earlier postings for the relevant paragraphs of the standard. The
code above seems to be OK (although it's tricky, and I might be wrong
about that OK). But it's not PIMPL.
Cheers,
- Alf
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