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| author | Ian Lynagh <igloo@earth.li> | 2009-06-05 12:23:48 +0000 |
|---|---|---|
| committer | Ian Lynagh <igloo@earth.li> | 2009-06-05 12:23:48 +0000 |
| commit | 8bf9fcc6529cac5fd4699909757b8e094118e5e4 (patch) | |
| tree | 0ce284a60378ede6c9bc26044000f04658a726c7 /docs | |
| parent | 64385754043e6127fc2876ad9406b10125a030b9 (diff) | |
| download | haskell-8bf9fcc6529cac5fd4699909757b8e094118e5e4.tar.gz | |
Document -fwarn-lazy-unlifted-bindings
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/users_guide/using.xml | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/docs/users_guide/using.xml b/docs/users_guide/using.xml index 65ca0acdf2..478a6bc20e 100644 --- a/docs/users_guide/using.xml +++ b/docs/users_guide/using.xml @@ -844,7 +844,8 @@ ghc -c Foo.hs</screen> <option>-fwarn-deprecated-flags</option>, <option>-fwarn-duplicate-exports</option>, <option>-fwarn-missing-fields</option>, - <option>-fwarn-missing-methods</option>, and + <option>-fwarn-missing-methods</option>, + <option>-fwarn-lazy-unlifted-bindings</option>, and <option>-fwarn-dodgy-foreign-imports</option>. The following flags are simple ways to select standard “packages” of warnings: @@ -1000,6 +1001,20 @@ foreign import "&f" f :: FunPtr t </varlistentry> <varlistentry> + <term><option>-fwarn-lazy-unlifted-bindings</option>:</term> + <listitem> + <indexterm><primary><option>-fwarn-lazy-unlifted-bindings</option></primary> + </indexterm> + <para>Causes a warning to be emitted when an unlifted type + is bound in a way that looks lazy, e.g. + <literal>where (I# x) = ...</literal>. Use + <literal>where !(I# x) = ...</literal> instead. This will be an + error, rather than a warning, in GHC 6.14. + </para> + </listitem> + </varlistentry> + + <varlistentry> <term><option>-fwarn-duplicate-exports</option>:</term> <listitem> <indexterm><primary><option>-fwarn-duplicate-exports</option></primary></indexterm> |