summaryrefslogtreecommitdiff
path: root/testsuite/tests/deriving/should_run/T9830.hs
diff options
context:
space:
mode:
authorSimon Peyton Jones <simonpj@microsoft.com>2014-11-27 15:44:10 +0000
committerSimon Peyton Jones <simonpj@microsoft.com>2014-11-27 15:44:10 +0000
commit01f03cb30426fad1b848051fa142c04c8816a80c (patch)
tree34564d11f0def9aea208aea4b4f769d0a2a12527 /testsuite/tests/deriving/should_run/T9830.hs
parentb61091d3b042305ce21bb00b28a81f903b522394 (diff)
downloadhaskell-01f03cb30426fad1b848051fa142c04c8816a80c.tar.gz
Get the right fixity-env in standalone deriving (Trac #9830)
Diffstat (limited to 'testsuite/tests/deriving/should_run/T9830.hs')
-rw-r--r--testsuite/tests/deriving/should_run/T9830.hs13
1 files changed, 13 insertions, 0 deletions
diff --git a/testsuite/tests/deriving/should_run/T9830.hs b/testsuite/tests/deriving/should_run/T9830.hs
new file mode 100644
index 0000000000..353decc347
--- /dev/null
+++ b/testsuite/tests/deriving/should_run/T9830.hs
@@ -0,0 +1,13 @@
+{-# LANGUAGE StandaloneDeriving #-}
+module Main where
+
+import T9830a
+
+deriving instance (Show a, Show b) => Show (ADT a b)
+
+main :: IO ()
+main = do
+ putStrLn $ "Prec 6: " ++ showsPrec 6 ("test" :?: "show") ""
+ putStrLn $ "Prec 7: " ++ showsPrec 7 ("test" :?: "show") ""
+ putStrLn $ "Prec 9: " ++ showsPrec 9 ("test" :?: "show") ""
+ putStrLn $ "Prec 10: " ++ showsPrec 10 ("test" :?: "show") ""