 enabled, <tt>_USE_LFN</tt> must be set to 2 or 3. In this case, the file function allocates the working buffer on the stack or heap. The working buffer occupies <tt>(_MAX_LFN + 1) * 2</tt> bytes and additional <tt>(_MAX_LFN + 44) / 15 * 32</tt> bytes when exFAT is enabled.</p>
<table class="lst2 rset">
<caption>With LFN at CM3+gcc</caption>
<tr><th><tt>_CODE_PAGE</tt></th><th>Code size</th></tr>
<tr><td>SBCS</td><td>+2.8K</td></tr>
<tr><td>932(Japanese)</td><td>+62.6k</td></tr>
<tr><td>936(Simplified Chine