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70<h3 class="section">7.54 <code>.line <var>line-number</var></code></h3>
71
72<a name="index-line-directive"></a>
73<a name="index-logical-line-number"></a>
74<p>Change the logical line number.  <var>line-number</var> must be an absolute
75expression.  The next line has that logical line number.  Therefore any other
76statements on the current line (after a statement separator character) are
77reported as on logical line number <var>line-number</var> - 1.  One day
78<code>as</code> will no longer support this directive: it is recognized only
79for compatibility with existing assembler programs.
80</p>
81<p>Even though this is a directive associated with the <code>a.out</code> or
82<code>b.out</code> object-code formats, <code>as</code> still recognizes it
83when producing COFF output, and treats &lsquo;<samp>.line</samp>&rsquo; as though it
84were the COFF &lsquo;<samp>.ln</samp>&rsquo; <em>if</em> it is found outside a
85<code>.def</code>/<code>.endef</code> pair.
86</p>
87<p>Inside a <code>.def</code>, &lsquo;<samp>.line</samp>&rsquo; is, instead, one of the directives
88used by compilers to generate auxiliary symbol information for
89debugging.
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