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Diffstat (limited to 'testsuite/tests/typecheck/should_compile/tc214.hs')
| -rw-r--r-- | testsuite/tests/typecheck/should_compile/tc214.hs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/tc214.hs b/testsuite/tests/typecheck/should_compile/tc214.hs new file mode 100644 index 0000000000..e631854a1e --- /dev/null +++ b/testsuite/tests/typecheck/should_compile/tc214.hs @@ -0,0 +1,19 @@ +{-# OPTIONS_GHC -XImpredicativeTypes -fno-warn-deprecated-flags -XGADTs #-} + +-- This program sent GHC 6.6 into a loop, because the fixpointing +-- of the substitution in type refinement got its in-scope-set +-- from the answer! + +module ShouldCompile where + +------------------ +data Foo a b where F :: a -> Foo () a + +bar :: Foo () (forall a.a) -> () +bar (F _) = () + +------------------ +data Foo2 a where F2 :: a -> Foo2 [a] + +bar2 :: Foo2 [forall a.a] -> () +bar2 (F2 _) = () |