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Re: [patch, rfc] Semantics of attribute (aligned), misscompilation of crtstuff

From: Andreas Schwab <schwab at suse dot de>
To: Zdenek Dvorak <rakdver at kam dot mff dot cuni dot cz>
Cc: Richard Guenther <richard dot guenther at gmail dot com>, gcc-patches at gcc dot gnu dot org
Date: Fri, 26 Oct 2007 11:25:29 +0200
Subject: Re: [patch, rfc] Semantics of attribute (aligned), misscompilation of crtstuff
References: <20071012164304.GA8897@kam.mff.cuni.cz> <84fc9c000710121254j60d064cek985b447c1f507d3f@mail.gmail.com> <20071014131842.GA22848@kam.mff.cuni.cz>

Zdenek Dvorak <rakdver@kam.mff.cuni.cz> writes:

> as discussed in http://gcc.gnu.org/ml/gcc-patches/2007-10/msg00771.html,
> aligned(sizeof(func_ptr)) on variables specifies only that the alignment
> must be at least that of sizeof(func_ptr), so crtstuff should not
> rely on that the alignment of such a variable is not increased above
> this bound.

You can get exact alignment with the packed attribute.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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References:
- [patch, rfc] Semantics of attribute (aligned), misscompilation of crtstuff
  - From: Zdenek Dvorak
- Re: [patch, rfc] Semantics of attribute (aligned), misscompilation of crtstuff
  - From: Richard Guenther
- Re: [patch, rfc] Semantics of attribute (aligned), misscompilation of crtstuff
  - From: Zdenek Dvorak

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