From: "Joseph S. Myers" <joseph@codesourcery.com>
To: Andrew Haley <aph@redhat.com>
Cc: Dave Korn <dave.korn.cygwin@googlemail.com>,
"gcc@gcc.gnu.org" <gcc@gcc.gnu.org>
Subject: Re: What does zero-length array mean at file scope?
Date: Thu, 28 May 2009 22:48:00 -0000 [thread overview]
Message-ID: <Pine.LNX.4.64.0905282059490.24872@digraph.polyomino.org.uk> (raw)
In-Reply-To: <4A1922B0.9090209@redhat.com>
On Sun, 24 May 2009, Andrew Haley wrote:
> Of course we have to fix the assembler output. For ant two declarations
> a and b, &a != &b, even when a is a zero-length array. So, you have to
> allocate at least one byte.
I don't think this is necessarily part of the semantics for the GNU
extensions of zero-length arrays and empty structures. Certainly when
they are used in the middle of a structure they are not expected to take
up any space (so their address may be the same as that of the next
member).
--
Joseph S. Myers
joseph@codesourcery.com
next prev parent reply other threads:[~2009-05-28 21:01 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-24 9:07 Dave Korn
2009-05-24 9:21 ` Dave Korn
2009-05-24 9:26 ` Dave Korn
2009-05-24 10:34 ` Andrew Haley
2009-05-24 10:57 ` Dave Korn
2009-05-24 12:03 ` Andrew Haley
2009-05-24 12:29 ` Dave Korn
2009-05-24 12:41 ` Dave Korn
2009-05-24 20:57 ` Andrew Haley
2009-05-24 22:51 ` Dave Korn
2009-05-28 22:48 ` Joseph S. Myers [this message]
2009-05-28 23:18 ` Dave Korn
2009-05-29 10:17 ` Andrew Haley
2009-05-28 22:45 ` Joseph S. Myers
2009-05-29 9:04 ` Dave Korn
2009-05-24 9:47 Uros Bizjak
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