El vie, 28-01-2011 a las 14:46 +0100, Krzesimir Nowak escribió:
> 2011/1/28 Culpian Camilo Martin <[email protected]>:
> > ok, i'll try it, i have had some troubles doing this:
> >
> > class foo
> > {
> > static ref_ptr<foo> create
> > (
> > return ref_ptr<foo>(new foo());
> > );
> > foo();
> > ~foo();
> > ref_ptr<foo> set_something()
> > {
> > //set something
> >
> > return ref_ptr<foo>(this);
> > //for using foo->set_something()->set_something();
> > // oviously the ref_ptr delete "this", and cause a segfault
> > // any idea how can avoid this?
> > }
> > }
>
> Would be good to show what is this ref_ptr class...
>
> If the below code segfaults then maybe copy constructor of ref_ptr
> does not increment reference count.
>
> ref_ptr<foo> f = foo::create();
> f->set_something()->set_something();
the problem is not when i do this:
ref_ptr<foo> f = foo::create();
f->set_something()->set_something();
the problem is when i do this:
class foo_b : public foo
{
static ref_ptr<foo_b> create()
{
return ref_ptr<foo_b>(new foo_b());
}
foo_b();
~foo_b();
}
when i do:
foo_b foob = foo_b::create();
foob->set_something(); //here ref_ptr delete the object member class
foo... this is what i can't do right.
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