lback.  `N` shall not exceed</span></div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span><span class="comment">   *        `target_blob.size()`.  See &quot;Error semantics&quot; (there is an `Error_code` regarding</span></div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span><span class="comment">   *        overflowing the user&#39;s memory area).</span></div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  30