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Diffstat (limited to 'testsuite/tests/typecheck/should_compile/tc207.hs')
| -rw-r--r-- | testsuite/tests/typecheck/should_compile/tc207.hs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/tc207.hs b/testsuite/tests/typecheck/should_compile/tc207.hs new file mode 100644 index 0000000000..a5b952176b --- /dev/null +++ b/testsuite/tests/typecheck/should_compile/tc207.hs @@ -0,0 +1,16 @@ + +-- Tests enhanced polymorphism + +module ShouldCompile where + +foo xs = let + f :: Eq a => [a] -> [a] + f [] = [] + f xs | null (g [True]) = [] + | otherwise = tail (g xs) + + g :: Eq b => [b] -> [b] + g [] = [] + g xs | null (f "hello") = [] + | otherwise = tail (f xs) + in f xs |