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From: adamd@rhi.hi.is (Adam David)
Newsgroups: comp.os.minix
Subject: Re: NULL
Message-ID: <3292@krafla.rhi.hi.is>
Date: 24 Jun 91 15:15:47 GMT
References: <33822@usc.edu>
Organization: University of Iceland
Lines: 18

In <33822@usc.edu> kjh@pollux.usc.edu (Kenneth J. Hendrickson) writes:

>*** BUG FIX ***

>In /usr/include/stdio.h, #define NULL 0
>In /usr/include/*.h (all others), #define NULL ((void *)0)

That is the way it is defined in my copy. It is broken like this.
The compiler warns about redefine NULL unless stdio.h is the last
file to be included. I have seen systems where the NULL defines
are all 0 or all ((void *)0) but it seems odd to have them mixed.
Of course there should be more use of '#ifndef NULL' exclusions.

Could someone please give an authoritative answer on this.

--
Adam David.
(adamd@rhi.hi.is)