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-rw-r--r--testsuite/tests/typecheck/should_compile/T3219.hs11
1 files changed, 11 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/T3219.hs b/testsuite/tests/typecheck/should_compile/T3219.hs
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index 0000000000..5c23c1727d
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+++ b/testsuite/tests/typecheck/should_compile/T3219.hs
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+-- Trac #3219. Lint error in GHC 6.10
+
+module T3219 where
+
+data T a = A{ m1 :: a } | B{ m1, m2 :: a } | C{ m2 :: a }
+
+-- bar :: (a -> a) -> T a -> T a
+bar f x@(A m) = x{m1 = f m}
+
+-- foo :: (a -> a) -> T a -> T a
+foo f x@(C m) = x{m2 = f m}