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| author | David Terei <davidterei@gmail.com> | 2011-07-20 11:09:03 -0700 |
|---|---|---|
| committer | David Terei <davidterei@gmail.com> | 2011-07-20 11:26:35 -0700 |
| commit | 16514f272fb42af6e9c7674a9bd6c9dce369231f (patch) | |
| tree | e4f332b45fe65e2a7a2451be5674f887b42bf199 /testsuite/tests/deSugar/should_compile/T4488.hs | |
| parent | ebd422aed41048476aa61dd4c520d43becd78682 (diff) | |
| download | haskell-16514f272fb42af6e9c7674a9bd6c9dce369231f.tar.gz | |
Move tests from tests/ghc-regress/* to just tests/*
Diffstat (limited to 'testsuite/tests/deSugar/should_compile/T4488.hs')
| -rw-r--r-- | testsuite/tests/deSugar/should_compile/T4488.hs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/testsuite/tests/deSugar/should_compile/T4488.hs b/testsuite/tests/deSugar/should_compile/T4488.hs new file mode 100644 index 0000000000..c5bae4e536 --- /dev/null +++ b/testsuite/tests/deSugar/should_compile/T4488.hs @@ -0,0 +1,29 @@ +{-# OPTIONS -fwarn-identities #-} + +-- Test warnings about identities + +module T4488 where + +-- ok1 :: Int -> Float +ok1 x = fromIntegral x + +warn1 :: Int -> Int +warn1 x = fromIntegral x + +ok4 :: Int -> Integer +ok4 x = toInteger x + +warn4 :: Integer -> Integer +warn4 x = toInteger x + +ok5 :: Float -> Rational +ok5 x = toRational x + +warn5 :: Rational -> Rational +warn5 x = toRational x + +-- ok6 :: Float -> Rational +ok6 x = realToFrac x + +warn6 :: Float -> Float +warn6 x = realToFrac x |