linux-kernel - Re: [PATCH] ptrdiff_t is not uintptr

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Message-Id: <200708191719.48340.david-b@pacbell.net>
Date:	Sun, 19 Aug 2007 17:19:47 -0700
From:	David Brownell <david-b@...bell.net>
To:	Al Viro <viro@....linux.org.uk>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ptrdiff_t is not uintptr_t, damnit

On Sunday 19 August 2007, Al Viro wrote:
> is wrong; for one thing, it's a bad C (it's what uintptr_t is for; in general
> we are not even promised that ptrdiff_t is large enough to hold a pointer,

ISTR we don't *have* a uintptr_t on all architectures, or that would
be the appropriate thing to use in these 32/64 bit ABI scenarios.


> Use unsigned long or uintptr_t instead. 

I suspect you mean "unsigned long long"...

- Dave
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