[Bug 210093] Redundant sq initialization in kern/subr_sleepqueue

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Thu Aug 4 19:40:44 UTC 2016


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=210093

John Baldwin <jhb at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|New                         |Closed
                 CC|                            |jhb at FreeBSD.org
         Resolution|---                         |Works As Intended

--- Comment #3 from John Baldwin <jhb at FreeBSD.org> ---
If the INVARIANTS block didn't have to define a variable we probably wouldn't
do it twice.  We could fix it but it would have to be a bit uglier:

#ifdef INVARIANTS
   int i;
#endif

   sq = td->td_sleepqueue;
#ifdef INVARIANTS
   for (i = 0; ...) {
   }
   ...
   sq->sq_lock = lock;
#endif
   ...

If our style permitted C99-type 'for (int i' that would be a simple way to
solve it, but it doesn't.

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