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Diffstat (limited to 'testsuite/tests/gadt/data2.hs')
| -rw-r--r-- | testsuite/tests/gadt/data2.hs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/testsuite/tests/gadt/data2.hs b/testsuite/tests/gadt/data2.hs new file mode 100644 index 0000000000..5b8a009d05 --- /dev/null +++ b/testsuite/tests/gadt/data2.hs @@ -0,0 +1,19 @@ +{-# LANGUAGE GADTs, ExistentialQuantification #-}
+
+-- Trac #289
+
+module ShouldCompile where
+
+class Foo a where
+ foo :: a -> Int
+
+data T = forall a. T (G a)
+data G a where
+ A :: G a
+ B :: Foo a => a -> G a
+
+doFoo :: T -> Int
+doFoo (T A) = 2
+doFoo (T (B x)) = foo x
+
+
|