om_ptr" class="anchor"></a><code><span><span class="keyword">val</span> string_from_ptr : <span><span>char <a href="#type-ptr">ptr</a></span> <span class="arrow">&#45;&gt;</span></span> <span><span class="label">length</span>:int <span class="arrow">&#45;&gt;</span></span> string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-ocaml_string_start"><a href="#val-ocaml_string_start" class="anchor"></a><code><span><span class="keyword">val</span> ocaml_string_start : <sp