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-rw-r--r--testsuite/tests/gadt/gadt11.hs12
1 files changed, 12 insertions, 0 deletions
diff --git a/testsuite/tests/gadt/gadt11.hs b/testsuite/tests/gadt/gadt11.hs
new file mode 100644
index 0000000000..a5000442fa
--- /dev/null
+++ b/testsuite/tests/gadt/gadt11.hs
@@ -0,0 +1,12 @@
+{-# LANGUAGE GADTs #-}
+
+module ShouldFail where
+
+-- Wrong return type
+data X f = X (f ())
+
+data B a where
+ B1 :: X []
+ B2 :: B [Int]
+
+