 href="../../IR/Procname/index.html#type-t">IR.Procname.t</a> * <a href="../TypeState/index.html#type-t">TypeState.t</a>)</span> list</span> <a href="../../IStdlib/index.html#module-IStd">IStdlib.IStd</a>.Lazy.t</span></span> <span>&#45;&gt;</span> <a href="../../IBase/Location/index.html#type-t">IBase.Location.t</a> <span>&#45;&gt;</span> unit</code></dt><dd><p>Check field initialization for a given constructor</p></dd></dl><dl><dt class="spec value" id="val-check_return_not_nullable"><a href="#val-check_r