diff options
Diffstat (limited to 'testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr')
| -rw-r--r-- | testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr | 29 |
1 files changed, 4 insertions, 25 deletions
diff --git a/testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr b/testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr index 3c3e73ddf6..b0d7bb2636 100644 --- a/testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr +++ b/testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr @@ -1,40 +1,19 @@ -Template.hs:9:5: warning: [-Wmissing-monadfail-instances (in -Wcompat)] - • Could not deduce (Control.Monad.Fail.MonadFail m) - arising from the failable pattern ‘Just _’ - (this will become an error in a future GHC release) - from the context: Monad m - bound by the type signature for: - monadFail :: forall (m :: * -> *) a. Monad m => m a - at Template.hs:7:1-27 - Possible fix: - add (Control.Monad.Fail.MonadFail m) to the context of - the type signature for: - monadFail :: forall (m :: * -> *) a. Monad m => m a - • In a stmt of a 'do' block: Just _ <- undefined - In the expression: - do Just _ <- undefined - undefined - In an equation for ‘monadFail’: - monadFail - = do Just _ <- undefined - undefined - -Template.hs:12:1: warning: [-Wsemigroup (in -Wcompat)] +Template.hs:7:1: warning: [-Wsemigroup (in -Wcompat)] Local definition of ‘<>’ clashes with a future Prelude name. This will become an error in a future release. -Template.hs:18:3: warning: [-Wnoncanonical-monoid-instances (in -Wcompat)] +Template.hs:13:3: warning: [-Wnoncanonical-monoid-instances (in -Wcompat)] Noncanonical ‘(<>) = mappend’ definition detected in the instance declaration for ‘Semigroup S’. Move definition from ‘mappend’ to ‘(<>)’ -Template.hs:21:3: warning: [-Wnoncanonical-monoid-instances (in -Wcompat)] +Template.hs:16:3: warning: [-Wnoncanonical-monoid-instances (in -Wcompat)] Noncanonical ‘mappend’ definition detected in the instance declaration for ‘Monoid S’. Define as ‘mappend = (<>)’ -Template.hs:25:15: warning: [-Wstar-is-type (in -Wcompat)] +Template.hs:20:15: warning: [-Wstar-is-type (in -Wcompat)] Using ‘*’ (or its Unicode variant) to mean ‘Data.Kind.Type’ relies on the StarIsType extension, which will become deprecated in the future. |