From: Tom Tromey <tromey@redhat.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: eggert@cs.ucla.edu, monnier@iro.umontreal.ca, emacs-devel@gnu.org
Subject: Re: attribute warn_unused_result
Date: Fri, 04 Feb 2011 10:12:22 -0700 [thread overview]
Message-ID: <m3zkqb911l.fsf@fleche.redhat.com> (raw)
In-Reply-To: <83zkqbah6c.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 04 Feb 2011 18:38:35 +0200")
Eli> Except that this page says -D_FORTIFY_SOURCE=2 is in effect with -O2
Eli> or higher, but I also see the warning with -O1. Only -O0 disables it.
I think that page is probably wrong.
In my libc's features.h, I see:
#if defined _FORTIFY_SOURCE && _FORTIFY_SOURCE > 0 \
&& defined __OPTIMIZE__ && __OPTIMIZE__ > 0
[...]
__OPTIMIZE__ is set to 1 if any optimization level > 0 is used. I don't
think headers can distinguish the levels. It could probably be done in
GCC specs, but I didn't look to see if the Ubuntu change attempts this.
Tom
next prev parent reply other threads:[~2011-02-04 17:12 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-03 14:57 attribute warn_unused_result Eli Zaretskii
2011-02-03 18:53 ` Stefan Monnier
2011-02-03 19:33 ` Paul Eggert
2011-02-03 20:42 ` Chad Brown
2011-02-03 21:30 ` Eli Zaretskii
2011-02-03 21:58 ` Paul Eggert
2011-02-04 0:17 ` Lennart Borgman
2011-02-04 8:18 ` Eli Zaretskii
2011-02-05 16:30 ` Chong Yidong
2011-02-03 21:40 ` Paul Eggert
2011-02-04 8:41 ` Eli Zaretskii
2011-02-04 8:51 ` Paul Eggert
2011-02-04 21:05 ` Stefan Monnier
2011-02-05 8:50 ` Eli Zaretskii
2011-02-03 21:47 ` Lennart Borgman
2011-02-04 21:08 ` Stefan Monnier
2011-02-04 21:15 ` Lennart Borgman
2011-02-05 9:03 ` Eli Zaretskii
2011-02-05 8:59 ` Eli Zaretskii
2011-02-03 22:08 ` Andy Moreton
2011-02-03 23:00 ` Paul Eggert
2011-02-03 21:16 ` Eli Zaretskii
2011-02-03 21:14 ` Eli Zaretskii
2011-02-04 0:57 ` Paul Eggert
2011-02-04 8:29 ` Eli Zaretskii
2011-02-04 15:50 ` Tom Tromey
2011-02-04 16:38 ` Eli Zaretskii
2011-02-04 17:12 ` Tom Tromey [this message]
2011-02-05 0:11 ` Paul Eggert
2011-02-05 9:18 ` Eli Zaretskii
[not found] ` <yyxvd0yxwv1.fsf@fencepost.gnu.org>
2011-02-06 1:34 ` Paul Eggert
2011-02-06 4:07 ` Eli Zaretskii
2011-02-06 7:04 ` Paul Eggert
2011-02-06 10:21 ` Eli Zaretskii
2011-02-06 18:58 ` Paul Eggert
2011-02-06 19:27 ` Eli Zaretskii
2011-02-06 20:11 ` Paul Eggert
2011-02-06 21:26 ` Eli Zaretskii
2011-02-04 21:14 ` Stefan Monnier
2011-02-05 8:57 ` Eli Zaretskii
2011-02-05 16:01 ` Stefan Monnier
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