Add a -fwarn-dodgy-exports flag; fixes #1911

[ghc-hetmet.git] / docs / users_guide / using.xml

diff --git a/docs/users_guide/using.xml b/docs/users_guide/using.xml
index f668639..06b9ccc 100644 (file)
--- a/docs/users_guide/using.xml
+++ b/docs/users_guide/using.xml
@@ -860,6 +860,7 @@ ghc -c Foo.hs</screen>
          <indexterm><primary>-W option</primary></indexterm>
          <para>Provides the standard warnings plus
          <option>-fwarn-incomplete-patterns</option>,
+         <option>-fwarn-dodgy-exports</option>,
          <option>-fwarn-dodgy-imports</option>,
          <option>-fwarn-unused-matches</option>,
          <option>-fwarn-unused-imports</option>, and
@@ -991,6 +992,20 @@ foreign import "&amp;f" f :: FunPtr t
       </varlistentry>
 
       <varlistentry>
+       <term><option>-fwarn-dodgy-exports</option>:</term>
+       <listitem>
+         <indexterm><primary><option>-fwarn-dodgy-exports</option></primary>
+         </indexterm>
+         <para>Causes a warning to be emitted when a datatype
+      <literal>T</literal> is exported
+      with all constructors, i.e. <literal>T(..)</literal>, but is it
+      just a type synonym.</para>
+         <para>Also causes a warning to be emitted when a module is
+      re-exported, but that module exports nothing.</para>
+       </listitem>
+      </varlistentry>
+
+      <varlistentry>
        <term><option>-fwarn-dodgy-imports</option>:</term>
        <listitem>
          <indexterm><primary><option>-fwarn-dodgy-imports</option></primary>