<term><option>-Wall</option>:</term>
<listitem>
<indexterm><primary><option>-Wall</option></primary></indexterm>
- <para>Turns on all warning options.</para>
+ <para>Turns on all warning options that indicate potentially
+ suspicious code. The warnings that are
+ <emphasis>not</emphasis> enabled by <option>-Wall</option>
+ are:</para>
+ <itemizedlist>
+ <listitem><option>-fwarn-simple-patterns</option></listitem>
+ <listitem><option>-fwarn-tabs</option></listitem>
+ <listitem><option>-fwarn-incomplete-record-updates</option></listitem>
+ <listitem><option>-fwarn-monomorphism-restriction</option></listitem>
+ </itemizedlist>
</listitem>
</varlistentry>
in the inadvertent cyclic definition <literal>let x = ... x
... in</literal>.</para>
- <para>Consequently, this option does
+ <para>Consequently, this option
<emphasis>will</emphasis> complain about cyclic recursive
definitions.</para>
</listitem>
the MR can give rise to unexpected behaviour, so it can be helpful
to have an explicit warning that it is being applied.</para>
- <para>This warning is on by default.</para>
+ <para>This warning is off by default.</para>
</listitem>
</varlistentry>