svn commit: r334669 - head/sys/sys
Ian Lepore
ian at freebsd.org
Tue Jun 5 20:53:28 UTC 2018
On Tue, 2018-06-05 at 20:34 +0000, Eric van Gyzen wrote:
> Author: vangyzen
> Date: Tue Jun 5 20:34:11 2018
> New Revision: 334669
> URL: https://svnweb.freebsd.org/changeset/base/334669
>
> Log:
> Make Coverity more happy with r334545
>
> Coverity complains about:
>
> if (((flags) & M_WAITOK) || _malloc_item != NULL)
>
> saying:
>
> The expression
> 1 /* (2 | 0x100) & 2 */ || _malloc_item != NULL
> is suspicious because it performs a Boolean operation
> on a constant other than 0 or 1.
>
> Although the code is correct, add "!= 0" to make it slightly
> more legible and to silence hundreds(?) of Coverity warnings.
>
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?
-- Ian
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