+
+
+#ifdef __GLASGOW_HASKELL__
+{-# NOINLINE uncaughtExceptionHandler #-}
+uncaughtExceptionHandler :: IORef (Exception -> IO ())
+uncaughtExceptionHandler = unsafePerformIO (newIORef defaultHandler)
+ where
+ defaultHandler :: Exception -> IO ()
+ defaultHandler ex = do
+ (hFlush stdout) `catchException` (\ _ -> return ())
+ let msg = case ex of
+ Deadlock -> "no threads to run: infinite loop or deadlock?"
+ ErrorCall s -> s
+ other -> showsPrec 0 other "\n"
+ withCStringLen ("Fail: "++msg) $ \(cstr,len) -> writeErrString cstr len
+
+foreign import ccall unsafe "writeErrString__"
+ writeErrString :: CString -> Int -> IO ()
+
+setUncaughtExceptionHandler :: (Exception -> IO ()) -> IO ()
+setUncaughtExceptionHandler = writeIORef uncaughtExceptionHandler
+
+getUncaughtExceptionHandler :: IO (Exception -> IO ())
+getUncaughtExceptionHandler = readIORef uncaughtExceptionHandler
+#endif