t;</span>&nbsp;len:int&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;char&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;unit<br>
&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;<span class="string">"caml_fill_bytes"</span>&nbsp;[@@noalloc]<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;unsafe_to_string&nbsp;:&nbsp;bytes&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;unsafe_of_string&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp