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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/simplCore/should_compile/simpl010.hs | |
parent | ebd422aed41048476aa61dd4c520d43becd78682 (diff) | |
download | haskell-16514f272fb42af6e9c7674a9bd6c9dce369231f.tar.gz |
Move tests from tests/ghc-regress/* to just tests/*
Diffstat (limited to 'testsuite/tests/simplCore/should_compile/simpl010.hs')
-rw-r--r-- | testsuite/tests/simplCore/should_compile/simpl010.hs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/testsuite/tests/simplCore/should_compile/simpl010.hs b/testsuite/tests/simplCore/should_compile/simpl010.hs new file mode 100644 index 0000000000..da2af345f2 --- /dev/null +++ b/testsuite/tests/simplCore/should_compile/simpl010.hs @@ -0,0 +1,19 @@ + +{-# LANGUAGE ExistentialQuantification #-} + +-- This tests an interaction between GADTs and join points +-- The case-of-case transformation can pretty easily result +-- in a type mis-match, because the join point does not see +-- the refinement from the case branch + +module ShouldCompile( h ) where + +data T a = forall b. T b [a] | T2 + +f :: a -> T a -> [a] +f x (T _ a) = a ++ a ++ a ++ [x] +f x T2 = [x] + +h :: a -> Bool -> T a -> T a -> [a] +h x b p q = f x (case b of { True -> p; False -> q }) +
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