From 3746dd58ca8c54cced97e0b5857a917f05a9b20b Mon Sep 17 00:00:00 2001
From: Jian Cheng <jian.cheng.1983@gmail.com>
Date: Tue, 3 Oct 2017 09:57:10 +0800
Subject: [PATCH] BUG: fix a bug for clang.

Const type  without a user-provided default constructor.
https://stackoverflow.com/questions/26077807/why-does-gcc-allow-a-const-object-without-a-user-declared-default-constructor-bu
---
 exprtk.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/exprtk.hpp b/exprtk.hpp
index b819573..b07d402 100644
--- a/exprtk.hpp
+++ b/exprtk.hpp
@@ -1962,7 +1962,7 @@ namespace exprtk
       template <typename T>
       inline bool string_to_real(const std::string& s, T& t)
       {
-         const typename numeric::details::number_type<T>::type num_type;
+         typename numeric::details::number_type<T>::type num_type;
 
          const char_t* begin = s.data();
          const char_t* end   = s.data() + s.size();