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author | David Terei <davidterei@gmail.com> | 2011-07-20 11:09:03 -0700 |
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committer | David Terei <davidterei@gmail.com> | 2011-07-20 11:26:35 -0700 |
commit | 16514f272fb42af6e9c7674a9bd6c9dce369231f (patch) | |
tree | e4f332b45fe65e2a7a2451be5674f887b42bf199 /testsuite/tests/indexed-types/should_compile/CoTest3.hs | |
parent | ebd422aed41048476aa61dd4c520d43becd78682 (diff) | |
download | haskell-16514f272fb42af6e9c7674a9bd6c9dce369231f.tar.gz |
Move tests from tests/ghc-regress/* to just tests/*
Diffstat (limited to 'testsuite/tests/indexed-types/should_compile/CoTest3.hs')
-rw-r--r-- | testsuite/tests/indexed-types/should_compile/CoTest3.hs | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/testsuite/tests/indexed-types/should_compile/CoTest3.hs b/testsuite/tests/indexed-types/should_compile/CoTest3.hs new file mode 100644 index 0000000000..971a464a89 --- /dev/null +++ b/testsuite/tests/indexed-types/should_compile/CoTest3.hs @@ -0,0 +1,26 @@ +{-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE RankNTypes #-}
+{-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE GADTs #-}
+
+-- This test uses the PushC rule of the System FC operational semantics
+-- Writen by Tom Schrijvers
+
+module CoTest3 where
+
+data T a = K (a ~ Int => a -> Int)
+
+
+{-# INLINE[2] f #-}
+f :: T s1 ~ T s2 => T s1 -> T s2
+f x = x
+
+{-# INLINE[3] test #-}
+test :: T s1 ~ T s2 => (s1 ~ Int => s1 -> Int) -> (s2 ~ Int => s2 -> Int)
+test g = case f (K g) of
+ K r -> r
+e :: s ~ Int => s -> s -> Int
+e _ s = s
+
+final :: s1 ~ s2 => s1 -> (s2 ~ Int => s2 -> Int)
+final x = test (e x)
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