svn commit: r334669 - head/sys/sys
Poul-Henning Kamp
phk at phk.freebsd.dk
Tue Jun 5 21:00:51 UTC 2018
--------
In message <1528232004.63685.25.camel at freebsd.org>, Ian Lepore writes:
>On Tue, 2018-06-05 at 20:34 +0000, Eric van Gyzen wrote:
>> (((flags) & M_WAITOK) || _malloc_item != NULL)
>
>This is a sad sad thing. Treating (bits & flagconstants) as boolean has
>a long long history in C. Surely there are literally thousand of
>occurrances in freebsd code already, so why did this one get flagged?
FlexeLint also gets its knickers in a twist about this kind of construct
and as far as I can tell the origin of that particular interpretation
comes out of the MISRA C rules.
In FlexeLint that specific check can be disabled, and I would imagine
Coverity has a similar tweakable setting.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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