Message-Id: <2.2.32.19970217010047.00686a98@mailhost>
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Date: Sun, 16 Feb 1997 23:00:47 -0200
To: djgpp AT delorie DOT com
From: Eyal Ben-David <eyalb AT aks DOT com>
Subject: Re: delete NULL?

> I just finished writing a C++ implementation of a circular linked list.
> 
> My question is this.  If I use delete on a pointer which is equal to
> NULL,
> for example...
> 
> char *ptr = NULL;
> 
> delete ptr;
> 

1. It is not recommended to use NULL in C++. Use 0 (zero) instead.
   ANSI C does not force the identity  NULL == 0. In C++ the null pointer
   is ALWAYS 0.
   
2. "delete 0" has no effect  ==> You don't have to test the pointer.