s="identifier">overflow</span><span class="special">()</span></code>, with the specialisation that <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">length_error</span></code> is thrown if appending the
          character to the input sequence would require the condition <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span> <span class="special">&gt;</span> <span class="identifier">max_size</spa