patch applied (ghc-6.10/ghc): putMVar and takeMVar: add write_barrier() to fix race with throwTo

Sun Jan 11 10:30:32 EST 2009

Wed Jan  7 03:20:26 PST 2009  Simon Marlow <marlowsd at gmail.com>
  * putMVar and takeMVar: add write_barrier() to fix race with throwTo

    M ./rts/PrimOps.cmm -2 +8

View patch online:
http://darcs.haskell.org/ghc-6.10/ghc/_darcs/patches/20090107112026-12142-3bf009ba866e78eb967072b694f6529801621f1e.gz