From owner-freebsd-current  Mon Jul  9  9:22:43 2001
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Date: Mon, 09 Jul 2001 09:23:10 -0700
From: Terry Lambert <tlambert2@mindspring.com>
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To: mjacob@feral.com
Cc: obrien@FreeBSD.ORG, Kris Kennaway <kris@obsecurity.org>,
	Dag-Erling Smorgrav <des@ofug.org>,
	Jim Pirzyk <Jim.Pirzyk@disney.com>, freebsd-current@FreeBSD.ORG
Subject: Re: chgrp broken on alpha systems
References: <Pine.BSF.4.21.0107052012000.37078-100000@beppo>
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Matthew Jacob wrote:
> 
> Perhaps what we really need- and this is really a toolchain
> issues- is a compiler that is just as stringent on i386 as
> on alpha?
> 
> I dunno- there used to be a flag to lint that would worn about
> non-portable size casts. Is there a gcc flag that would cover most
> of the heavy lifting for this on i386?

Some people at work recently put the anal flags on the
build tree, including "-ansi -pedantic".

It was quite annoying; for one thing, ANSI doesn't permit
unsigned char's to be used in bitfields, and there are a
number of KAME-derived IPv6 headers that do this.

So if you are going to make the compiler anal, you will
need to change these to "int" and use "#pragma pack(1)"
to keep the size the same.  I'm not sure how happy this
type of thing would be on Alpha: there may be good reason
for the use of the unsigned char ("u_char") for these
fields.

-- Terry

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