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Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..."

From: Seongbae Park
Subject: Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..."
Date: Fri, 29 Dec 2006 16:02:31 -0800

On 12/29/06, Paul Eggert <address@hidden> wrote:
> the much more often reported problems are with
> -fstrict-aliasing, and this one also doesn't get any
> special treatment by autoconf.

That's a good point, and it somewhat counterbalances the
opposing point that -O2 does not currently imply
'-ffast-math'ish optimizations even though the C standard
would allow it to.

Can you point me to the relevant section/paragraph in C99 standard
where it allows the implementation to do -ffast-math style optimization ?
C99 Annex F.8 quite clearly says the implementation can't,
as long as it claims any conformity to IEC 60559.
#pragma ident "Seongbae Park, compiler,";

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