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Re: C++ PATCH: Empty classes, yet again

From: Janis Johnson <janis187 at us dot ibm dot com>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Tue, 22 Oct 2002 12:03:28 -0700
Subject: Re: C++ PATCH: Empty classes, yet again
References: <Pine.GSO.4.44.0210212337380.28116-100000@igloo.df.lth.se> <110680000.1035263050@warlock.codesourcery.com>

On Mon, Oct 21, 2002 at 10:04:10PM -0700, Mark Mitchell wrote:
> I believe this problem will be fixed by the attached patch, which corrects
> yet another ABI bug involving empty classes.  Tested on i686-pc-linux-gnu,
> applied on the mainline.
> 
> 2002-10-21  Mark Mitchell  <mark@codesourcery.com>
> 
> 	* class.c (empty_base_at_nonzero_offset_p): New function.
> 	(layout_nonempty_base_or_field): Do not check for conflicts when
> 	laying out a virtual base using the GCC 3.2 ABI.
> 	(build_base_field): Correct checking for presence of empty classes
> 	at non-zero offsets when clearing CLASSTYPE_NEARLY_EMPTY_P.
> 
> 2002-10-21  Mark Mitchell  <mark@codesourcery.com>
> 
> 	* g++.dg/abi/vbase13.C: New test.
> 	* g++.dg/abi/vbase14.C: Likewise.

I no longer get unaligned access messages when running the C++ tests on
ia64-linux.

Janis

References:
- Re: C++ PATCH: Empty classes, yet again
  - From: Krister Walfridsson
- Re: C++ PATCH: Empty classes, yet again
  - From: Mark Mitchell

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