diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/users_guide/using-warnings.rst | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/docs/users_guide/using-warnings.rst b/docs/users_guide/using-warnings.rst index 62a0f723df..577bce0a74 100644 --- a/docs/users_guide/using-warnings.rst +++ b/docs/users_guide/using-warnings.rst @@ -163,6 +163,7 @@ as ``-Wno-...`` for every individual warning in the group. * :ghc-flag:`-Wsemigroup` * :ghc-flag:`-Wnoncanonical-monoid-instances` + * :ghc-flag:`-Wnoncanonical-monad-instances` * :ghc-flag:`-Wcompat-unqualified-imports` * :ghc-flag:`-Wtype-equality-out-of-scope` @@ -566,7 +567,7 @@ of ``-W(no-)*``. :since: 8.0 - :default: off + :default: on Warn if noncanonical ``Applicative`` or ``Monad`` instances declarations are detected. @@ -584,6 +585,8 @@ of ``-W(no-)*``. * Warn if ``pure`` is defined backwards (i.e. ``pure = return``). * Warn if ``(*>)`` is defined backwards (i.e. ``(*>) = (>>)``). + This warning is part of the :ghc-flag:`-Wcompat` option group. + .. ghc-flag:: -Wnoncanonical-monadfail-instances :shortdesc: *(deprecated)* warn when ``Monad`` or ``MonadFail`` instances have @@ -610,6 +613,8 @@ of ``-W(no-)*``. :since: 8.0 + :default: on + Warn if noncanonical ``Semigroup`` or ``Monoid`` instances declarations are detected. @@ -625,8 +630,7 @@ of ``-W(no-)*``. * Warn if ``(<>)`` is defined backwards (i.e. ``(<>) = mappend``). - This warning is off by default. However, it is part of the - :ghc-flag:`-Wcompat` option group. + This warning is part of the :ghc-flag:`-Wcompat` option group. .. ghc-flag:: -Wmissing-monadfail-instances :shortdesc: *(deprecated)* |