From: Erik Max Francis <max AT alcyone DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: delete NULL?
Date: Sat, 22 Feb 1997 13:52:13 -0800
Organization: Alcyone Systems
Lines: 28
Message-ID: <330F6A8D.643B9308@alcyone.com>
References: <19970216 DOT 124451 DOT 7287 DOT 0 DOT fwec AT juno DOT com>
NNTP-Posting-Host: newton.alcyone.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Mark T Logan wrote:

> char *ptr = NULL;
> 
> delete ptr;
> 
> Will anything bad happen?  I have written the linked list to be as simple
> as
> possible, and as such only one node will ever have a pointer in it
> pointing
> to NULL.  This node is the dummy node at the beginning of the list, and I
> end up calling delete on it in one of my destructors.

No.  Deleting the null pointer is guaranteed to be safe in C++.

> Do I need to avoid this?  Will this become some horrific bug much later
> in
> my project?

If it does, then it's a bug in your compiler.

-- 
       Erik Max Francis, &tSftDotIotE / email:  max AT alcyone DOT com
                     Alcyone Systems /    web:  http://www.alcyone.com/max/
San Jose, California, United States /    icbm:  37 20 07 N  121 53 38 W
                                   \
              "I am become death, / destroyer of worlds."
                                 / J. Robert Oppenheimer (quoting legend)