> deref_str</code></dt><dd><p>dereference strings used to explain a dereference action in an error message</p></dd></dl><dl><dt class="spec value" id="val-deref_str_null"><a href="#val-deref_str_null" class="anchor"></a><code><span class="keyword">val</span> deref_str_null : <span><a href="../IR/Procname/index.html#type-t">IR.Procname.t</a> option</span> <span>&#45;&gt;</span> <a href="index.html#type-deref_str">deref_str</a></code></dt><dd><p>dereference strings for null dereference</p></dd></dl><dl><dt cl