From: Jason Merrill <jason@redhat.com>
To: tromey@redhat.com
Cc: Jamie Lokier <jamie@shareable.org>, Andrew Haley <aph@redhat.com>,
gcc@gcc.gnu.org
Subject: Re: On alignment
Date: Wed, 23 Apr 2003 19:13:00 -0000 [thread overview]
Message-ID: <wvllly1dq6q.fsf@prospero.boston.redhat.com> (raw)
In-Reply-To: <87lly1f5ir.fsf@fleche.redhat.com> (Tom Tromey's message of "23 Apr 2003 12:11:24 -0600")
On 23 Apr 2003 12:11:24 -0600, Tom Tromey <tromey@redhat.com> wrote:
>>>>>> "Jason" == Jason Merrill <jason@redhat.com> writes:
>
> [ about struct foo { double x; } ]
>
> Tom> I'd like to find the most future-proof way to do this. In the above,
> Tom> is __alignof__(foo::x) the best way? I'm only concerned with
> Tom> alignment of fields.
>
> Jason> It is since my recent patch to do all alignment calculation for
> Jason> fields in layout_decl.
>
> I can't do this.
>
> struct aligner { double field; };
>
> int compute () { return __alignof__ (aligner::field); }
Ah, no, you need to do something like
#define FIELD_ALIGNOF(TYPE) __alignof (((struct { TYPE t; } *)0)->t)
Jason
next prev parent reply other threads:[~2003-04-23 18:30 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-25 16:48 Kevin B. Hendricks
2003-03-25 18:39 ` Jason Merrill
2003-03-25 18:41 ` Jason Merrill
2003-03-25 19:14 ` Kevin B. Hendricks
2003-03-25 19:57 ` Jason Merrill
2003-04-22 11:36 ` Andrew Haley
2003-04-22 12:05 ` Nathan Sidwell
2003-04-22 12:37 ` Andrew Haley
2003-04-22 13:15 ` Andreas Schwab
2003-04-23 13:32 ` Jamie Lokier
2003-04-23 16:07 ` Jason Merrill
2003-04-23 17:41 ` Tom Tromey
2003-04-23 18:06 ` Jason Merrill
2003-04-23 18:42 ` Tom Tromey
2003-04-23 19:13 ` Jason Merrill [this message]
2003-04-23 19:43 ` Gabriel Dos Reis
2003-04-23 20:23 ` Tom Tromey
2003-04-23 21:45 ` Gabriel Dos Reis
2003-04-24 7:00 ` Jason Merrill
2003-04-24 11:45 ` Andrew Haley
2003-05-01 23:50 ` Tom Tromey
2003-05-02 13:08 ` Gabriel Dos Reis
2003-05-05 14:56 ` Jason Merrill
2003-05-08 9:58 ` Gabriel Dos Reis
2003-04-23 19:33 ` Gabriel Dos Reis
2003-04-24 1:32 ` Jamie Lokier
2003-03-25 21:27 ` Tom Tromey
2003-03-26 12:58 ` Andrew Haley
2003-03-26 22:26 ` Mark Mitchell
2003-03-25 18:57 ` Tom Tromey
-- strict thread matches above, loose matches on Subject: below --
2003-04-23 19:47 Robert Dewar
2003-04-23 19:34 Joern Rennecke
2003-04-22 17:19 Robert Dewar
2003-04-22 14:43 Robert Dewar
2003-04-22 15:13 ` Andrew Haley
2003-04-22 16:22 ` Jason Merrill
2003-04-22 16:26 ` Nicola Pero
2003-04-22 17:19 ` Andrew Haley
2003-04-22 18:46 ` Jason Merrill
2003-04-22 17:17 ` Andrew Haley
2003-03-21 0:25 Jason Merrill
2003-03-21 11:49 ` Andrew Haley
2003-03-21 15:18 ` Andrew Haley
2003-03-21 19:31 ` Tom Tromey
2003-03-21 15:39 ` Michael Matz
2003-03-21 15:41 ` Andrew Haley
2003-03-22 0:25 ` Jason Merrill
2003-03-22 9:35 ` Tom Tromey
2003-03-22 10:31 ` Andrew Haley
2003-03-25 2:52 ` Jason Merrill
2003-03-25 10:16 ` Andrew Haley
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