From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Dmitry Antipov <antipov@mvista.com>, emacs-devel@gnu.org
Subject: Re: immediate strings #2
Date: Mon, 28 Nov 2011 16:54:36 -0500 [thread overview]
Message-ID: <jwvliqzap9x.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <m21ussypn3.fsf@igel.home> (Andreas Schwab's message of "Mon, 28 Nov 2011 21:10:24 +0100")
>> I don't know any C compiler able to allocate unions at the bit level,
> It can't since it's not a bitfield (which isn't possible anyway).
Not that it's relevant to Emacs, but I don't know which part of the
C standard would force a C compiler to layout all unions at an
"addressable" offset. I mean, wouldn't it be valid for a compiler to
analyze the whole program and decide "oh, the code uses the union in
such a way that I can bit-align it to save some padding space and noone
will notice"?
Stefan
next prev parent reply other threads:[~2011-11-28 21:54 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-28 9:11 immediate strings #2 Dmitry Antipov
2011-11-28 17:33 ` Stefan Monnier
2011-11-28 19:48 ` Ken Raeburn
2011-11-28 20:10 ` Andreas Schwab
2011-11-28 21:54 ` Stefan Monnier [this message]
2011-11-28 22:25 ` Andreas Schwab
2011-11-29 0:57 ` Ken Raeburn
2011-11-29 8:44 ` Andreas Schwab
2011-11-29 15:48 ` Ken Raeburn
2011-11-29 16:08 ` Andreas Schwab
2011-11-30 16:43 ` Ken Raeburn
2011-11-28 22:18 ` Paul Eggert
2011-11-29 2:07 ` Stefan Monnier
2011-11-29 3:37 ` Dmitry Antipov
2011-11-29 8:50 ` Paul Eggert
2011-11-30 5:37 ` Dmitry Antipov
2011-11-30 9:35 ` Paul Eggert
2011-11-30 16:43 ` Ken Raeburn
2011-11-30 21:44 ` Paul Eggert
2011-11-29 3:17 ` Dmitry Antipov
2011-11-29 5:29 ` Dmitry Antipov
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