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Re: GCC optimization oddity

From: "Giovanni Bajo" <rasky at develer dot com>
To: "Prosun Niyogi" <pniyogi at us dot ibm dot com>
Cc: <gcc at gcc dot gnu dot org>
Date: Sat, 15 Oct 2005 16:39:04 +0200
Subject: Re: GCC optimization oddity
References: <OFE583BE96.6EABC9DB-ON87257099.0065C83F-86257099.0065BD0C@us.ibm.com>

Prosun Niyogi <pniyogi@us.ibm.com> wrote:

> i.  gcc -S gcc-bug.c -Os -DHAHA; md5sum gcc-bug.s
> ii. gcc -S gcc-bug.c -Os -DHAHA -DBLAH -DAKS -DJKAHSD; md5sum gcc-bug.s
>
> As you can tell, the -D macros are bogus, and I would expect the md5sums
> from each compile to match. But they dont. The diff of the resulting
> assembly is as follows:

I can't reproduce this with a newer GCC version. If  you still see it,
please submit a bugreport following the guidelines at
http://gcc.gnu.org/bugs.html.
-- 
Giovanni Bajo

References:
- GCC optimization oddity
  - From: Prosun Niyogi

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