diff options
Diffstat (limited to 'testsuite/tests/typecheck/should_compile/T18998.hs')
| -rw-r--r-- | testsuite/tests/typecheck/should_compile/T18998.hs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/T18998.hs b/testsuite/tests/typecheck/should_compile/T18998.hs new file mode 100644 index 0000000000..25571bae30 --- /dev/null +++ b/testsuite/tests/typecheck/should_compile/T18998.hs @@ -0,0 +1,14 @@ +{-# LANGUAGE LinearTypes, GADTs, DataKinds, KindSignatures #-} + +-- this caused a TcLevel assertion failure + +module T18998 where + +import GHC.Types +import GHC.TypeLits + +data Id :: Nat -> Type -> Type where + MkId :: a %1-> Id 0 a + +f :: a %1-> Id n a -> Id n a +f a (MkId _) = MkId a |