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<a name="g_t_002eline-line_002dnumber"></a>
<h3 class="section">7.53 <code>.line <var>line-number</var></code></h3>

<a name="index-line-directive"></a>
<a name="index-logical-line-number"></a>
<p>Change the logical line number.  <var>line-number</var> must be an absolute
expression.  The next line has that logical line number.  Therefore any other
statements on the current line (after a statement separator character) are
reported as on logical line number <var>line-number</var> - 1.  One day
<code>as</code> will no longer support this directive: it is recognized only
for compatibility with existing assembler programs.
</p>
<p>Even though this is a directive associated with the <code>a.out</code> or
<code>b.out</code> object-code formats, <code>as</code> still recognizes it
when producing COFF output, and treats &lsquo;<samp>.line</samp>&rsquo; as though it
were the COFF &lsquo;<samp>.ln</samp>&rsquo; <em>if</em> it is found outside a
<code>.def</code>/<code>.endef</code> pair.
</p>
<p>Inside a <code>.def</code>, &lsquo;<samp>.line</samp>&rsquo; is, instead, one of the directives
used by compilers to generate auxiliary symbol information for
debugging.
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