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: -malign-double switch patch?

From: Richard Henderson <rth at redhat dot com>
To: Jamie Lokier <egcs at tantalophile dot demon dot co dot uk>
Cc: Nix <nix at esperi dot demon dot co dot uk>, "Davis, Bryan" <BRDavis at dsrnet dot com>, gcc at gcc dot gnu dot org
Date: Sat, 10 Aug 2002 22:24:08 -0700
Subject: Re: -malign-double switch patch?
References: <33F012255162604984A3F4BDA95C6EC4015DFEA5@mstaex1b.DSRUSI.com> <20020809223524.GB6018@redhat.com> <87wuqzldxv.fsf@amaterasu.srvr.nix> <20020811021111.A1320@kushida.apsleyroad.org>

On Sun, Aug 11, 2002 at 02:11:11AM +0100, Jamie Lokier wrote:
> Now, if you're not using structures, perhaps it isn't obvious that you
> can still have ABI breakage...  (Argument alignment on the stack
> changes, doesn't it?)

Stack alignment doesn't change, iirc.  But are you absolutely positively
sure you aren't using structures somewhere?  I wouldn't bet on it.  I bet
there's a 64-bit integer type (e.g. off_t) somewhere in the fstream
structure that's being layed out differently.

r~

References:
- -malign-double switch patch?
  - From: Davis, Bryan
- Re: -malign-double switch patch?
  - From: Richard Henderson
- Re: -malign-double switch patch?
  - From: Nix
- Re: -malign-double switch patch?
  - From: Jamie Lokier

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