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Re: PR rtl-optimization/15248 -- semi-latent reload bug

From: Bernd Schmidt <bernds_cb1 at t-online dot de>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: law at redhat dot com, GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Fri, 03 Jun 2005 11:56:21 +0200
Subject: Re: PR rtl-optimization/15248 -- semi-latent reload bug
References: <1114020137.5853.17.camel@localhost.localdomain> <426766CC.8040708@t-online.de> <1114091206.5853.44.camel@localhost.localdomain> <84fc9c0005042106581ad3a9b4@mail.gmail.com> <4267F666.8070003@t-online.de> <1115151116.23400.219.camel@localhost.localdomain> <427A5650.1010509@t-online.de> <1115397970.13680.22.camel@localhost.localdomain> <427BA7BE.9040605@t-online.de> <1115400579.13680.49.camel@localhost.localdomain> <427F68DE.1000902@t-online.de> <1116349089.24576.84.camel@localhost.localdomain> <428B4ACE.5040406@t-online.de> <1117556218.19437.151.camel@localhost.localdomain> <429EC601.8050407@t-online.de> <429F2EA7.9000003@codesourcery.com>

Mark Mitchell wrote:

Bernd Schmidt wrote:
Jeffrey A Law wrote:
No further concerns from me.  Once it's in the mainline for a little
while we should seriously consider backporting it to 4.0 and maybe
even the 3.x series.
Ok, retested (i686-linux, no Ada) and committed. Mark, your call if you want to have this in 4.0 - this fixes a problem where we could produce stores to a memory location even though the source program only reads from it, leading to crashes if that memory location happens to be readonly.
OK for 4.0.

I guess it's not. I've reverted it from mainline for now since it's apparently causing bootstrap failures. I'd welcome any help in tracking this down since I can't reproduce it on my machine.

Bernd

References:
- Re: PR rtl-optimization/15248 -- semi-latent reload bug
  - From: Bernd Schmidt
- Re: PR rtl-optimization/15248 -- semi-latent reload bug
  - From: Mark Mitchell

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