<listitem><option>-fwarn-tabs</option></listitem>
<listitem><option>-fwarn-incomplete-record-updates</option></listitem>
<listitem><option>-fwarn-monomorphism-restriction</option></listitem>
+ <listitem><option>-fwarn-implicit-prelude</option></listitem>
</itemizedlist>
</listitem>
</varlistentry>
</varlistentry>
<varlistentry>
+ <term><option>-fwarn-implicit-prelude</option>:</term>
+ <listitem>
+ <indexterm><primary><option>-fwarn-implicit-prelude</option></primary></indexterm>
+ <indexterm><primary>implicit prelude, warning</primary></indexterm>
+ <para>Have the compiler warn if the Prelude is implicitly
+ imported. This happens unless either the Prelude module is
+ explicitly imported with an <literal>import ... Prelude ...</literal>
+ line, or this implicit import is disabled (either by
+ <option>-fno-implicit-prelude</option> or a
+ <literal>LANGUAGE NoImplicitPrelude</literal> pragma).</para>
+
+ <para>Note that no warning is given for syntax that implicitly
+ refers to the Prelude, even if <option>-fno-implicit-prelude</option>
+ would change whether it refers to the Prelude.
+ For example, no warning is given when
+ <literal>368</literal> means
+ <literal>Prelude.fromInteger (368::Prelude.Integer)</literal>
+ (where <literal>Prelude</literal> refers to the actual Prelude module,
+ regardless of the imports of the module being compiled).</para>
+
+ <para>This warning is off by default.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
<term><option>-fwarn-incomplete-patterns</option>:</term>
<listitem>
<indexterm><primary><option>-fwarn-incomplete-patterns</option></primary></indexterm>
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>