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From: dewar@gnat.com
To: jkl@miacid.net, jsm28@cam.ac.uk
Subject: Re: [PATCH] C undefined behavior fix
Cc: Dautrevaux@microprocess.com, Franz.Sirl-kernel@lauterbach.com,
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Date: Sat,  5 Jan 2002 19:52:50 -0500 (EST)
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<<Or to put it another way: The Linux kernel developers NEED an
implementation defined way to build a pointer from an address.  If
arithmatic on byte pointers isn't it (which is perfectly understandable)
and casting a pointer from an integer isn't it, then can someone please
tell us (not just "that will work for now" or "that will probably work")
how do we do that?
>>

Now that's a very reasonable question. Note that it is not just
kernel developers who need this, anyone doing memory mapped I/O
needs similar capabilities. They are present explicitly in Ada
(with address clauses), but not in C, so you do indeed need to
decide how to provide this capability in a reasonable manner.
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