[commit: testsuite] master: use unsafeUnmask instead of an IORef containing restore (6272664)

[Simon Marlow]

Repository : ssh://darcs.haskell.org//srv/darcs/testsuite

On branch  : master

http://hackage.haskell.org/trac/ghc/changeset/6272664b9c33ba9b9ac5bdf0c120413266716995

>---------------------------------------------------------------

commit 6272664b9c33ba9b9ac5bdf0c120413266716995
Author: Simon Marlow <marlowsd at gmail.com>
Date:   Wed Feb 20 09:19:54 2013 +0000

    use unsafeUnmask instead of an IORef containing restore
    
    This is much closer to how the test originally worked, so it's more
    likely that the test is still testing what it was testing before :-)

>---------------------------------------------------------------

 tests/concurrent/should_run/T3279.hs |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/tests/concurrent/should_run/T3279.hs b/tests/concurrent/should_run/T3279.hs
index f479704..a90d38a 100644
--- a/tests/concurrent/should_run/T3279.hs
+++ b/tests/concurrent/should_run/T3279.hs
@@ -3,19 +3,20 @@
 import System.IO.Unsafe
 import GHC.Conc
 import Control.Exception
+import GHC.IO (unsafeUnmask)
 
 f :: Int
 f = (1 +) . unsafePerformIO $ do
         error "foo" `catch` \(SomeException e) -> do
             myThreadId >>= flip throwTo e
             -- point X
-            unblock $ return 1
+            unsafeUnmask $ return 1
 
 main :: IO ()
 main = do
     evaluate f `catch` \(SomeException e) -> return 0
     -- the evaluation of 'x' is now suspended at point X
-    tid <- block $ forkIO (evaluate f >> return ())
+    tid <- mask_ $ forkIO (evaluate f >> return ())
     killThread tid
     -- now execute the 'unblock' above with a pending exception
     yield