Re: delete(this)

From:

James Kanze <james.kanze@gmail.com>

Newsgroups:

comp.lang.c++

Date:

Sun, 3 Feb 2008 09:13:06 -0800 (PST)

Message-ID:

<93e4b830-7912-4402-90c2-a6eb2ab6cd06@e6g2000prf.googlegroups.com>

On Feb 3, 2:33 pm, Rolf Magnus <ramag...@t-online.de> wrote:

Rahul wrote:

I was wondering what the standard says about the following,

class test
{
public: test()
            {
               delete(this);
            }
           ~test()
            {
              delete(this);
           }
};

int main()
{
test object;
}

It says that this code has undefined behavior. You must not
delete objects that haven't been created using new.

Amongst other things. Think of what will happen in a new
expresssion: "new test". I don't think deleting the return
value of new is really a good idea either. And of course, if
you call delete on a pointer to test, you'll end up double
deleting.

Delete this is pretty much a standard idiom, but not from the
constructor or the destructor.

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James Kanze (GABI Software) email:james.kanze@gmail.com
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