class="identifier">CharT</span> <span class="special">*</span> buf<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> length<span class="special">,</span> 
                         <span class="identifier">std</span><span class="special">::</span><span class="identifier">ios_base</span><span class="special">::</span><span class="identifier">openmode</span> mode <span class="special">=</span> <span class="identifier">std</spa