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Programming > C++ > Re: delete [] o...
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Re: delete [] of Derived objects through Base object which has

by James Kanze <james.kanze@[EMAIL PROTECTED] > May 13, 2008 at 01:53 AM

On May 13, 12:04 am, xavier <xavier> wrote:

> > class Base
> > {
> > public:
> >   virtual ~Base() {}
> > };

> > class Derived : public Base
> > {};

> > int main()
> > {
> >   Base* p =3D new Derived(); // static type of p is "pointer to Base"
> >                            // dynamic type of p is "pointer to
Derived"
> > }

> in the above example, what will happen if we add 'delete p;'
> at the end of main(). What will be deleted ? Only the base
> class part or both base and derived part of instantied object
> ?

Objects are deleted, not parts of objects.  Either the code has
undefined behavior (and anything can happen), or delete will
delete the entire object.  (In this case, of course, it is the
lattern.)

--
James Kanze (GABI Software)             email:james.kanze@[EMAIL PROTECTED]
 en informatique orient=E9e objet/
                   Beratung in objektorientierter Datenverarbeitung
9 place S=E9mard, 78210 St.-Cyr-l'=C9cole, France, +33 (0)1 30 23 00 34
 




 13 Posts in Topic:
delete [] of Derived objects through Base object which has virt
"subramanian100in@[E  2008-04-28 19:32:38 
Re: delete [] of Derived objects through Base object which has
Sam <sam@[EMAIL PROTEC  2008-04-28 22:49:23 
Re: delete [] of Derived objects through Base object which has
"Jim Langston"   2008-04-28 22:14:10 
Re: delete [] of Derived objects through Base object which has
Kai-Uwe Bux <jkherciue  2008-04-29 02:30:39 
Re: delete [] of Derived objects through Base object which has
James Kanze <james.kan  2008-04-29 02:38:59 
Re: delete [] of Derived objects through Base object which has v
"Jim Langston"   2008-04-29 02:48:22 
Re: delete [] of Derived objects through Base object which has v
"Jim Langston"   2008-04-29 03:05:02 
Re: delete [] of Derived objects through Base object which has
"subramanian100in@[E  2008-04-29 04:52:10 
Re: delete [] of Derived objects through Base object which has
Barry <dhb2000@[EMAIL   2008-04-29 19:58:50 
Re: delete [] of Derived objects through Base object which has
xavier <xavier>   2008-05-13 00:04:19 
Re: delete [] of Derived objects through Base object which has
Ian Collins <ian-news@  2008-05-13 10:06:11 
Re: delete [] of Derived objects through Base object which has
James Kanze <james.kan  2008-04-29 05:45:51 
Re: delete [] of Derived objects through Base object which has
James Kanze <james.kan  2008-05-13 01:53:14 

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