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Re: PowerPC malloc alignment

From: Daniel Jacobowitz <drow at false dot org>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: libc-alpha at sourceware dot org, Steven Munroe <sjmunroe at us dot ibm dot com>
Date: Wed, 31 Oct 2007 17:28:32 -0400
Subject: Re: PowerPC malloc alignment
References: <20071031205240.GA30110@caradoc.them.org> <20071031212316.GU2896@sunsite.mff.cuni.cz>

On Wed, Oct 31, 2007 at 10:23:16PM +0100, Jakub Jelinek wrote:
> The main problem is emacs (aka the only user of
> malloc_set_state/malloc_get_state).  Changing the alignment is really an ABI
> change for these interfaces, unless it does some very ugly hacks in it.

Only if it saves in a dump with one and restores with the other, isn't
it?  Actually, I can't see how it matters at all.  I may have to
grovel through the emacs dumper to try to figure it out.

Meanwhile, mallocing anything containing a long double or vector
generates quietly wrong code unless you use posix_memalign :-(

-- 
Daniel Jacobowitz
CodeSourcery

References:
- PowerPC malloc alignment
  - From: Daniel Jacobowitz
- Re: PowerPC malloc alignment
  - From: Jakub Jelinek

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