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From: "willus0 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/51562] Expression evaluation with commas seems incorrect in gcc 4.5.2, 4.4.4
Date: Thu, 15 Dec 2011 13:27:00 -0000 [thread overview]
Message-ID: <bug-51562-4-63uIUV6inu@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-51562-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51562
--- Comment #2 from willus0 at hotmail dot com 2011-12-15 13:16:37 UTC ---
(In reply to comment #1)
> (x=1,x)+(x=2,x)
>
> is invoking undefined behavior as there is no sequence point inbetween
> the two assignments to x.
Is the same also true of the second statement, in which case the Numerical
Recipes code is simply poorly written?
next prev parent reply other threads:[~2011-12-15 13:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-15 7:10 [Bug c/51562] New: " willus0 at hotmail dot com
2011-12-15 10:03 ` [Bug c/51562] " rguenth at gcc dot gnu.org
2011-12-15 13:27 ` willus0 at hotmail dot com [this message]
2011-12-15 15:19 ` [Bug c/51562] missing -Wsequence-point warning for expression with commas manu at gcc dot gnu.org
2011-12-16 14:12 ` willus0 at hotmail dot com
2015-03-16 15:32 ` mpolacek at gcc dot gnu.org
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