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-rw-r--r--testsuite/tests/ghci/scripts/T16575.hs9
1 files changed, 9 insertions, 0 deletions
diff --git a/testsuite/tests/ghci/scripts/T16575.hs b/testsuite/tests/ghci/scripts/T16575.hs
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+++ b/testsuite/tests/ghci/scripts/T16575.hs
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+module Ghost where
+
+data X = A | B
+ deriving (Show)
+
+instance Eq X where
+ A == A = True
+ B == B = True
+ _ == _ = False