From d0352395362348c0ab9115c5ebd4f13b68473fa6 Mon Sep 17 00:00:00 2001
From: Arash Partow <partow@gmail.com>
Date: Thu, 13 Apr 2017 08:13:10 +1000
Subject: [PATCH] C++ Mathematical Expression Library (ExprTk) 
 http://www.partow.net/programming/exprtk/index.html

---
 exprtk.hpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/exprtk.hpp b/exprtk.hpp
index 8b9a952..99b6df8 100644
--- a/exprtk.hpp
+++ b/exprtk.hpp
@@ -26571,12 +26571,14 @@ namespace exprtk
             else if (all_nodes_variables(arg_list))
                return varnode_optimise_varargfunc(operation,arg_list);
 
+            #ifndef exprtk_disable_string_capabilities
             if (details::e_smulti == operation)
             {
                return node_allocator_->
                  allocate<details::str_vararg_node<Type,details::vararg_multi_op<Type> > >(arg_list);
             }
             else
+            #endif
             {
                switch (operation)
                {