diff options
Diffstat (limited to 'testsuite/tests/safeHaskell/unsafeLibs/Dep01.hs')
| -rw-r--r-- | testsuite/tests/safeHaskell/unsafeLibs/Dep01.hs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/testsuite/tests/safeHaskell/unsafeLibs/Dep01.hs b/testsuite/tests/safeHaskell/unsafeLibs/Dep01.hs new file mode 100644 index 0000000000..5ee1cd0288 --- /dev/null +++ b/testsuite/tests/safeHaskell/unsafeLibs/Dep01.hs @@ -0,0 +1,13 @@ +module Dep01 where + +import Control.Monad +import Control.Monad.ST +import Data.STRef + +sumST :: Num a => [a] -> IO a +sumST xs = unsafeSTToIO $ do + n <- newSTRef 0 + forM_ xs $ \x -> do + modifySTRef n (+x) + readSTRef n + |