From: "Paul D. DeRocco" <pderocco@ix.netcom.com>
To: <ecos-discuss@ecos.sourceware.org>
Subject: RE: [ECOS] Re: pragma pack
Date: Thu, 10 Jan 2008 00:50:00 -0000 [thread overview]
Message-ID: <015801c85322$bf2055e0$887ba8c0@PAULD> (raw)
In-Reply-To: <fm3mgi$v4$1@ger.gmane.org>
> From: Grant Edwards
>
> The trap snaps shut when you take the address of a field in a
> packed struct and pass that to somebody who's expecting a
> pointer to a normally aligned value.
True. I could imagine ways in which the type system could be designed to
prevent that, using a pointer modifier like "int __packed*", but it's not.
Anyway, for normal accesses, it works fine, so you can do things like
operate on the fields in a DOS boot sector without problems. That's the only
situation I've ever needed the feature.
--
Ciao, Paul D. DeRocco
Paul mailto:pderocco@ix.netcom.com
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
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next prev parent reply other threads:[~2008-01-10 0:50 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-09 14:19 [ECOS] " Alexandre
2008-01-09 14:40 ` Andrew Lunn
2008-01-09 14:51 ` Bernard Fouché
2008-01-09 14:56 ` Alexandre
2008-01-09 21:55 ` Bronislav Gabrhelik
2008-01-09 22:22 ` Paul D. DeRocco
2008-01-09 23:50 ` [ECOS] " Grant Edwards
2008-01-10 0:50 ` Paul D. DeRocco [this message]
2008-01-10 9:43 ` Alexandre
2008-01-10 10:07 ` EXTERNAL Gladis Olaf (Praktikant; CR/AEM)
2008-01-10 10:29 ` Alexandre
2008-01-09 15:02 ` [ECOS] " EXTERNAL Gladis Olaf (Praktikant; CR/AEM)
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