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Re: issue with gcc 4.x optimizations

From: Andrew Haley <aph at redhat dot com>
To: Martin Quinson <martin dot quinson at loria dot fr>
Cc: gcc-help at gcc dot gnu dot org, Arnaud Legrand <Arnaud dot Legrand at imag dot fr>
Date: Thu, 6 Jul 2006 09:47:20 +0100
Subject: Re: issue with gcc 4.x optimizations
References: <20060705081427.GE27934@blaise.loria.fr> <20060705233703.GN27934@blaise.loria.fr> <20060706015238.GQ27934@blaise.loria.fr>

Martin Quinson writes:
 > For information, I've solved my issue. A part of my code was doing an
 > overflow in an array stored on the stack. It looks like %ebx is stored right
 > after user data, but only reused with dynamic linking and some optimizations
 > enabled (or so).
 > 
 > That is why it worked without optimization: I was overwritting a useless
 > value in that case.
 > 
 > Hoo-ray!
 > 
 > I am deeply sorry for this list polution.

Thanks for letting us know.  FYI, -fstack-protector might have helped.

Andrew.

References:
- issue with gcc 4.x optimizations
  - From: Martin Quinson
- Re: issue with gcc 4.x optimizations
  - From: Martin Quinson
- Re: issue with gcc 4.x optimizations
  - From: Martin Quinson

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