diff options
Diffstat (limited to 'test/Main.hs')
| -rw-r--r-- | test/Main.hs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/test/Main.hs b/test/Main.hs index f2ebfa2..d314ed4 100644 --- a/test/Main.hs +++ b/test/Main.hs @@ -9,6 +9,9 @@ import InitOnce globalRef :: IORef Int globalRef = $$(once [|| newIORef 0 ||]) +-- wrong :: Typeable a => IORef [a] -- does not typecheck: no instance Typeable a +-- wrong = $$(once [|| newIORef [] ||]) + {-# NOINLINE foo #-} foo :: IO String foo = atomicModifyIORef' globalRef (\i -> (i + 1, show i)) |