1 files changed, 15 insertions, 0 deletions
diff --git a/testsuite/tests/profiling/should_compile/T14931_State.hs b/testsuite/tests/profiling/should_compile/T14931_State.hs
new file mode 100644
index 0000000000..9008c06a96
--- /dev/null
+++ b/testsuite/tests/profiling/should_compile/T14931_State.hs
@@ -0,0 +1,15 @@
+{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE FunctionalDependencies #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE UndecidableInstances #-}
+module T14931_State (MonadState(..), Lazy.evalState) where
+
+import qualified Control.Monad.Trans.State.Lazy as Lazy (StateT, get, put, evalState)
+
+class Monad m => MonadState s m | m -> s where
+    get :: m s
+    put :: s -> m ()
+
+instance Monad m => MonadState s (Lazy.StateT s m) where
+    get = Lazy.get
+    put = Lazy.put