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[Bug c/64639] false negative of -Wunused-value
- From: "chengniansun at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 17 Jan 2015 08:15:52 +0000
- Subject: [Bug c/64639] false negative of -Wunused-value
- Auto-submitted: auto-generated
- References: <bug-64639-4 at http dot gcc dot gnu dot 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.