Re: g++-4.0.3: program output is different when compiled with -O3 (did not happen with gcc-3.4.5)

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To: Erik <freeciv@xxxxxxx>, MSX to GCC <gcc-help@xxxxxxxxxxx>
Subject: Re: g++-4.0.3: program output is different when compiled with -O3 (did not happen with gcc-3.4.5)
From: John Love-Jensen <eljay@xxxxxxxxx>
Date: Tue, 16 May 2006 07:20:16 -0500
In-reply-to: <4469BF4D.2000909@xxxxxxx>
Sender: gcc-help-owner@xxxxxxxxxxx
User-agent: Microsoft-Entourage/11.2.3.060209

Hi Erik,

> The fast code works, but not with gcc-4.0, -O3 and strict aliasing.

The fast code is not compliant to the C or C++ standards.

Sincerely,
--Eljay

References:
- Re: g++-4.0.3: program output is different when compiled with -O3 (did not happen with gcc-3.4.5)
  - From: Erik

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