diff options
Diffstat (limited to 'testsuite/tests/indexed-types/should_compile/Simple9.hs')
| -rw-r--r-- | testsuite/tests/indexed-types/should_compile/Simple9.hs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/testsuite/tests/indexed-types/should_compile/Simple9.hs b/testsuite/tests/indexed-types/should_compile/Simple9.hs new file mode 100644 index 0000000000..4075d4845f --- /dev/null +++ b/testsuite/tests/indexed-types/should_compile/Simple9.hs @@ -0,0 +1,18 @@ +{-# LANGUAGE TypeFamilies #-} + +module Simple9 where + +-- The test succeeds with +-- +-- type family F a b +-- type instance F () b = Maybe b + +type family F a :: * -> * +type instance F () = Maybe + +type family G a +type instance G (Maybe a) = Int + +foo :: G (F () a) -> Int +foo x = x + |