diff options
Diffstat (limited to 'testsuite/tests/typecheck/should_fail/T5236.hs')
-rw-r--r-- | testsuite/tests/typecheck/should_fail/T5236.hs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_fail/T5236.hs b/testsuite/tests/typecheck/should_fail/T5236.hs new file mode 100644 index 0000000000..07b31c3218 --- /dev/null +++ b/testsuite/tests/typecheck/should_fail/T5236.hs @@ -0,0 +1,21 @@ +{-# LANGUAGE MultiParamTypeClasses, FunctionalDependencies, FlexibleContexts #-} + +module Main where + +data A +data B + +class Id a b | a -> b, b -> a + +instance Id A A +instance Id B B + +loop :: Id A B => Bool +loop = True + +f :: Bool +f = loop + + +main :: IO () +main = return ()
\ No newline at end of file |