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From: "REH" <bogus@nowhere.net>
Newsgroups: comp.lang.ada,comp.lang.c++,comp.realtime,comp.software-eng
Subject: Re: [OT] Re: Teaching new tricks to an old dog (C++ -->Ada)
Date: Mon, 28 Mar 2005 12:03:52 -0500
Organization: Earth
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Date: 2005-03-28T12:03:52-05:00
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"Ioannis Vranos" <ivr@remove.this.grad.com> wrote in message
news:1112022773.497341@athnrd02...
> In C++ you can always do:
>
> #include <new>
>
>
> class SomeClass
> {
> };
>
>
> void somefunc()
> {
>      unsigned char obj[sizeof(SomeClass)];
>
>      SomeClass *p= new(obj)SomeClass;
>
>      delete p;
> }
>
>
> as also:
>
>
> #include <new>
>
>
> class SomeClass
> {
> };
>
>
> SomeClass *somefunc()
> {
>      static unsigned char obj[sizeof(SomeClass)];
>
>      return new(obj)SomeClass;
> }
>
>
> int main()
> {
>      SomeClass *p= somefunc();
>
>      delete p;
> }
>
>
> Here the object is created in the stack.
>
Another problem with this is you cannot use delete on a pointer returned
from placement new.  You must instead call the destructor directly:
p->~SomeClass();