Re: Darcs bug in alioth

[Marco Túlio Gontijo e Silva <marcot@riseup.net>]

Good afternoon.

Em Dom, 2009-08-16 às 09:49 +0200, Raphael Hertzog escreveu:
> On Sat, 15 Aug 2009, Marco Túlio Gontijo e Silva wrote:
> > Thu Nov 13 13:57:30 BRST 2008  Simon Marlow <marlowsd@gmail.com>
> >   * Fix an extremely subtle deadlock bug on x86_64
> >   The recent_activity flag was an unsigned int, but we sometimes do a
> >   64-bit xchg() on it, which overwrites the next word in memory.  This
> >   happened to contain the sched_state flag, which is used to control the
> >   orderly shutdown of the system.  If the xchg() happened during
> >   shutdown, the scheduler would get confused and deadlock.  Don't you
> >   just love C?
> > 
> > I applied the second one to ghc6_6.8.2dsfg1-1 and the bug is not present
> > anymore.  As the package is small and it's a very annoying bug, I
> > thought that the suggestion from mornfall was a good option.
> 
> So the right way to proceed is IMO to do a stable update of ghc6 with the
> patch you found.

I read about uploads to stable in the Developers Reference, and I'm not sure if
it's the case.  I think this is a very annoying bug, with a simple patch to
fix, so I guess it can be the case.  The package is done here, needing
only some format corrections, in debian/changelog.

Do you think this is a good idea?

(...)

-- 
marcot
http://marcot.iaaeee.org/