Path: ...!weretis.net!feeder8.news.weretis.net!proxad.net!feeder1-2.proxad.net!usenet-fr.net!news.gegeweb.eu!gegeweb.org!nntp.terraraq.uk!.POSTED.tunnel.sfere.anjou.terraraq.org.uk!not-for-mail
From: Richard Kettlewell <invalid@invalid.invalid>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: RP2350 and Pico 2 - things missing
Date: Thu, 29 Aug 2024 20:26:45 +0100
Organization: terraraq NNTP server
Message-ID: <wwvo75bp1u2.fsf@LkoBDZeT.terraraq.uk>
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The Natural Philosopher <tnp@invalid.invalid> writes:
> 24 bit pointers were I think quite common, but isn't the 'null
> pointer' *defined* to be (Char *)0 ?
> Otherwise how could you test for it?

The null pointer you get from (char *)0 (or similar constructions)
doesn’t have to be all bits 0.

https://c-faq.com/null/index.html

-- 
https://www.greenend.org.uk/rjk/