diff options
Diffstat (limited to 'testsuite/tests/deriving/should_compile/T18914.hs')
| -rw-r--r-- | testsuite/tests/deriving/should_compile/T18914.hs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/testsuite/tests/deriving/should_compile/T18914.hs b/testsuite/tests/deriving/should_compile/T18914.hs new file mode 100644 index 0000000000..8d30695cf4 --- /dev/null +++ b/testsuite/tests/deriving/should_compile/T18914.hs @@ -0,0 +1,12 @@ +{-# LANGUAGE GeneralizedNewtypeDeriving #-} +{-# LANGUAGE RankNTypes #-} +module T18914 where + +type T f = forall a. f a + +class C f where + m1 :: T f + m2 :: forall a. f a + +newtype N f a = MkN (f a) + deriving C |