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<h3 class="section">2.16 Control Warnings: <span class="option">-W</span>, <span class="option">--warn</span>, <span class="option">--no-warn</span>, <span class="option">--fatal-warnings</span></h3>
<p><span class="command">as</span> should never give a warning or error message when
assembling compiler output. But programs written by people often
cause <span class="command">as</span> to give a warning that a particular assumption was
made. All such warnings are directed to the standard error file.
<p><a name="index-_002dW-101"></a><a name="index-_002d_002dno_002dwarn-102"></a><a name="index-suppressing-warnings-103"></a><a name="index-warnings_002c-suppressing-104"></a>If you use the <span class="option">-W</span> and <span class="option">--no-warn</span> options, no warnings are issued.
This only affects the warning messages: it does not change any particular of
how <span class="command">as</span> assembles your file. Errors, which stop the assembly,
are still reported.
<p><a name="index-_002d_002dfatal_002dwarnings-105"></a><a name="index-errors_002c-caused-by-warnings-106"></a><a name="index-warnings_002c-causing-error-107"></a>If you use the <span class="option">--fatal-warnings</span> option, <span class="command">as</span> considers
files that generate warnings to be in error.
<p><a name="index-_002d_002dwarn-108"></a><a name="index-warnings_002c-switching-on-109"></a>You can switch these options off again by specifying <span class="option">--warn</span>, which
causes warnings to be output as usual.
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