Test Trac #13244

2 files changed, 35 insertions, 0 deletions

diff --git a/testsuite/tests/indexed-types/should_compile/T13244.hs b/testsuite/tests/indexed-types/should_compile/T13244.hs
new file mode 100644
index 0000000000..e1a65b99ef
--- /dev/null
+++ b/testsuite/tests/indexed-types/should_compile/T13244.hs
@@ -0,0 +1,34 @@
+{-# LANGUAGE MagicHash, DataKinds, PolyKinds, TypeInType, TypeFamilies #-}
+
+module T13244 where
+
+import Data.Int
+import Data.Word
+import GHC.Prim
+import GHC.Types
+
+type family Rep x where
+  Rep Int    = IntRep
+  Rep Int8   = IntRep
+  Rep Int16  = IntRep
+  Rep Int32  = IntRep
+  Rep Int64  = Int64Rep
+  Rep Bool   = IntRep
+  Rep Char   = IntRep
+  Rep Word   = WordRep
+  Rep Word8  = WordRep
+  Rep Word16 = WordRep
+  Rep Word32 = WordRep
+  Rep Word64 = Word64Rep
+  Rep Float  = FloatRep
+  Rep Double = DoubleRep
+
+class Unbox x where
+  type Unboxed x :: TYPE (Rep x)
+  unbox :: x -> Unboxed x
+  box :: Unboxed x -> x
+
+instance Unbox Int where
+  type Unboxed Int = Int#
+  unbox (I# i) = i
+  box = I#
diff --git a/testsuite/tests/indexed-types/should_compile/all.T b/testsuite/tests/indexed-types/should_compile/all.T
index 26e24ada34..cdce0f66e6 100644
--- a/testsuite/tests/indexed-types/should_compile/all.T
+++ b/testsuite/tests/indexed-types/should_compile/all.T
@@ -260,3 +260,4 @@ test('T12522b', normal, compile, [''])
 test('T12676', normal, compile, [''])
 test('T12526', normal, compile, [''])
 test('T12538', normal, compile_fail, [''])
+test('T13244', normal, compile, [''])