Re: can we debug into delete

From:

Stuart Redmann <DerTopper@web.de>

Newsgroups:

comp.lang.c++

Date:

Tue, 20 Nov 2007 10:53:29 +0100

Message-ID:

<fhue08$frc$1@news.dtag.de>

George2 wrote:

Hello everyone,

I am using Visual Studio 2005 and I am wondering whether we could
debug into the global delete operator?

Debugging is in general OT in this newsgroup. Debugging under a particalur
platform is even more OT.

I have tried to debug by setting a break point to delete statement,
but I could only debug into destructor.

My understanding is, when we call delete, the internal operations are,

1. invoking destructor;
2. invoking global delete operator.

Is my understanding correct?

Almost. If a class has an overwritten delete operator, this particalur
implementation is called (I almost surely used the terms 'operator delete' and
'delete operator' incorrectly here. There is a difference between these terms
that some follow-ups to this posting will explain, but most people can live with
using the terms incorrectly :-)

For example,

[Code]
class Foo {

int i;

public:

    Foo()
    {
        i = 100;
    }

    ~Foo()
    {
        i = 0;
    }
};

int main (int argc, char** argv)
{
    Foo* f = new Foo();

    delete f; // can not debug inside

    return 0;
}
[/Code]

Regards,
Stuart