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Re: gcc 4.0.0 on amd64: problem with -O2?

From: Harald Dunkel <harald dot dunkel at t-online dot de>
To: Andrew Pinski <pinskia at physics dot uc dot edu>
Cc: gcc-bugs at gcc dot gnu dot org, aj at andaco dot de
Date: Sat, 07 May 2005 21:25:13 +0200
Subject: Re: gcc 4.0.0 on amd64: problem with -O2?
References: <427D0339.7030904@t-online.de> <680cf3ff627ea4ce82861a8253bb08b7@physics.uc.edu>

Andrew Pinski wrote:
>
> Stop right there, you said it warns, well this is a case where
> you are violating C89/C99/C++ aliasing rules so it is a bug in your
> code and not in GCC.
>

This is not my code. It is XFree86 4.3. I am just trying to
help by investigating a problem and providing an easy testcase.

If you read my report, then you will recognize that it is
a problem of the optimizer.

Regards

Harri

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Follow-Ups:
- Re: gcc 4.0.0 on amd64: problem with -O2?
  - From: Andrew Pinski

References:
- gcc 4.0.0 on amd64: problem with -O2?
  - From: Harald Dunkel
- Re: gcc 4.0.0 on amd64: problem with -O2?
  - From: Andrew Pinski

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