Re: Operator delete question

From:
Diego Martins <jose.diego@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Mon, 19 Oct 2009 12:04:39 -0700 (PDT)
Message-ID:
<5920cdc1-e753-469d-ac89-290a9d325e37@g31g2000vbr.googlegroups.com>
On Oct 9, 3:22 pm, snapwink <snapw...@gmail.com> wrote:

I am running into this weird behavior with operator delete on an
embedded system, so I am wondering if this is standard C++ behavior or
is my compiler doing something wrong (RVCT 2.2 compiler). Appreciate
your patience as this is a long example:

static void * my_malloc (unsigned int numBytes)
{
  printf ("my malloc\n");
  return malloc(numBytes);

}

static void my_free (void *bufPtr)
{
  printf ("my free\n");
  free (bufPtr);

}

/* Interface I am trying to implement */
class ISocket
{
public:
  virtual void Release() = 0;
  virtual void TCPSockMethod() = 0;

};


you just missed a virtual destructor in your interface...

class TCPSocket {

....

  virtual void Release () {printf ("Socket::Release\n"); delete this;}

....

};


the "delete this" on your Release() call will invoke ISocket::~ISocket
() (a no-op function generated by your compiler)

int main()
{
  ISocket *pISock = static_cast <ISocket *> (new TCPSocket());
  pISock->Release();
  return 0;


Cheers

Diego Martins
HP

I am back from the dead :D

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