1 files changed, 22 insertions, 0 deletions
diff --git a/testsuite/tests/concurrent/should_run/3429.hs b/testsuite/tests/concurrent/should_run/3429.hs
new file mode 100644
index 0000000000..8b12a8b1ff
--- /dev/null
+++ b/testsuite/tests/concurrent/should_run/3429.hs
@@ -0,0 +1,22 @@
+import Control.Monad
+import Control.Concurrent
+import Control.Concurrent.MVar
+import Control.Exception
+import System.IO
+
+main :: IO ()
+main = do hSetBuffering stdout NoBuffering
+          replicateM_ 1000 doit
+
+doit :: IO ()
+doit = do v <- newMVar ()
+          t <- forkIO (foo v)
+          threadDelay 1000
+          killThread t
+          takeMVar v
+          putChar '.'
+
+foo :: MVar () -> IO ()
+foo v = do let loop = do withMVar v $ \x -> evaluate x
+                         loop
+           loop