1 files changed, 16 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/tc054.hs b/testsuite/tests/typecheck/should_compile/tc054.hs
new file mode 100644
index 0000000000..df9deb08aa
--- /dev/null
+++ b/testsuite/tests/typecheck/should_compile/tc054.hs
@@ -0,0 +1,16 @@
+module ShouldSucceed where
+
+class Eq' a where
+ doubleeq :: a -> a -> Bool
+
+class (Eq' a) => Ord' a where
+ lt :: a -> a -> Bool
+
+instance Eq' Int where
+ doubleeq x y = True
+
+instance Ord' Int where
+ lt x y = True
+
+f x y | lt x 1 = True
+      | otherwise = False