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From: "chengniansun at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/64639] false negative of -Wunused-value
Date: Sat, 17 Jan 2015 08:15:00 -0000 [thread overview]
Message-ID: <bug-64639-4-1iJRTwENGd@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-64639-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64639
Chengnian Sun <chengniansun at gmail dot com> changed:
What |Removed |Added
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CC| |chengniansun at gmail dot com
--- Comment #2 from Chengnian Sun <chengniansun at gmail dot com> ---
(In reply to Andrew Pinski from comment #1)
> "(a = 0) != 0" has a side effect of setting a to 0.
>
> I think in this case, clang is incorrectly warning about it.
I agree that (a = 0) has a side effect, but the comparison "!=" is not used.
next prev parent reply other threads:[~2015-01-17 8:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-17 7:48 [Bug c/64639] New: " chengniansun at gmail dot com
2015-01-17 8:15 ` chengniansun at gmail dot com [this message]
2015-01-17 18:53 ` [Bug c/64639] " chengniansun at gmail dot com
2015-01-18 13:29 ` manu at gcc dot gnu.org
2015-01-20 9:32 ` maltsevm at gmail dot com
2020-05-19 17:19 ` [Bug c/64639] missing warning by -Wunused-value in compound expressions msebor at gcc dot gnu.org
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