ass="odoc-spec"><div class="spec value anchored" id="val-add_type_from_decl_ref_opt"><a href="#val-add_type_from_decl_ref_opt" class="anchor"></a><code><span><span class="keyword">val</span> add_type_from_decl_ref_opt : 
  <span><a href="#type-qual_type_to_sil_type">qual_type_to_sil_type</a> <span class="arrow">&#45;&gt;</span></span>
  <span><a href="../../IR/Tenv/index.html#type-t">IR.Tenv.t</a> <span class="arrow">&#45;&gt;</span></span>
  <span><span><a href="../../ATDGenerated/Clang_ast_t/index.html#ty