bug#7489: [coreutils] over aggressive threads in sort

[Jim Meyering]

Paul Eggert wrote:
> Could you please try this little patch?  It should fix your
> problem.  I came up with this fix in my sleep (literally!
> I woke up this morning and the patch was in my head), but
> haven't had time to look at the code in this area to see
> if it's the best fix.
>
> Clearly there's at least one more bug as noted in my previous email
> <http://lists.gnu.org/archive/html/bug-coreutils/2010-11/msg00216.html>
> but I expect it's less likely to fire.

I haven't tried to trigger that one yet.
Have you?