From: "Rafał Maj" <r_maj AT poczta DOT onet DOT pl>
Newsgroups: comp.os.msdos.djgpp
Subject: Odp: delete OR delete[] ?
Date: Thu, 17 Aug 2000 18:54:22 +0200
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To: djgpp AT delorie DOT com
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Manni Heumann <manni DOT heumann AT gmx DOT de> wrote

> >What is difference between delete and delete[] ?
> >With one should I use to delete array :  char *ptr = new char[1024] ?
> >When I'm overloading operator delete for some class, should I overload
> >operator delete[] too ?

> No offense, but someone, who is just learning how to use
> delete, should not try to overload delete.

I now that my question was wery simple, but I hope I'm NOT a newbie (at
least in using new/delete).
I asked this question because I think, that ther was a bug in C++ book, from
witch I was learning.

Example from book : ============
class cTest { public :
  void* operator new(unsigned long SIZE) { return new char[SIZE]; }
  void operator delete(void* THIS) {
    delete THIS;  // <--- !!!
  }
};
main() {
  cTest *ptr = new cTest;
  delete ptr;
}
==================

It looks like it should be
   delete[] THIS;
right ?

If I'll use in this example delete[] THIS, will then everything be allright
?
I'm asking, because I was getting compiler warning :
   " `void *' is not a pointer-to-object type"
unil I used :
  delete[] (char*)THIS;


> Overloading operator delete is rarely necessary.

I waned to overload it like this :
  void* operator new(unsigned long SIZE)

    memory_needed(SIZE);
    return new char[SIZE];
  }
Function memory_needed() will check size of free memory, and, if ther isn't
enought, this function will
unload some data from memory.


> "Life would be much easier if I had the source code."
That's right
Rafal