This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: structure members of packed structures

From: Alexandre Oliva <aoliva at redhat dot com>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: Nathan Sidwell <nathan at codesourcery dot com>, Hans-Peter Nilsson <hp at bitrange dot com>, gcc at gcc dot gnu dot org, dalej at apple dot com
Date: 15 Jul 2003 13:51:52 -0300
Subject: Re: structure members of packed structures
Organization: GCC Team, Red Hat
References: <Pine.BSF.4.44.0307142207420.4585-100000@dair.pair.com><3F13C008.9040906@codesourcery.com><1058259203.15765.22.camel@minax.codesourcery.com>

On Jul 15, 2003, Mark Mitchell <mark@codesourcery.com> wrote:

>> Another question. What about
>> struct __attribute__((packed)) Foo
>> {
>> T m;
>> };
>> 
>> here m happens to fall at an aligned address, and the size of Foo happens
>> to be a multiple of that alignment. Should m be DECL_PACKED or not?

> I say yes.

Does this mean T needs packed ctors, dtor and member functions?  Are
they implicitly generated from the non-packed ones, or must the user
define them explicitly?

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                 aoliva@{redhat.com, gcc.gnu.org}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist                Professional serial bug killer

Follow-Ups:
- Re: structure members of packed structures
  - From: Mark Mitchell

References:
- Re: structure members of packed structures
  - From: Hans-Peter Nilsson
- Re: structure members of packed structures
  - From: Nathan Sidwell
- Re: structure members of packed structures
  - From: Mark Mitchell

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]