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Diffstat (limited to 'testsuite/tests/rep-poly/T14765.hs')
| -rw-r--r-- | testsuite/tests/rep-poly/T14765.hs | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/testsuite/tests/rep-poly/T14765.hs b/testsuite/tests/rep-poly/T14765.hs new file mode 100644 index 0000000000..b124252bb4 --- /dev/null +++ b/testsuite/tests/rep-poly/T14765.hs @@ -0,0 +1,11 @@ +{-# LANGUAGE Haskell2010 #-} +{-# LANGUAGE MagicHash, PolyKinds, ExplicitForAll #-} + +module T14765 where + +import GHC.Exts + +fold :: forall rep a (r :: TYPE rep). + (r -> a -> Proxy# r -> r) -> (Proxy# r -> r) -> [a] -> r +fold f k [] = k proxy# +fold f k (x : xs) = fold f (f (k proxy#) x) xs |