From c4e15ddda0e8b79e9bd46e7fac8dcbf2aca3e131 Mon Sep 17 00:00:00 2001
From: Matt Borland <matt@mattborland.com>
Date: Fri, 22 Dec 2023 06:06:57 -0500
Subject: [PATCH] Fix index for MSVC 14.0

---
 include/boost/math/tools/mp.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/math/tools/mp.hpp b/include/boost/math/tools/mp.hpp
index 7bf70a55a..55aac1b09 100644
--- a/include/boost/math/tools/mp.hpp
+++ b/include/boost/math/tools/mp.hpp
@@ -388,7 +388,7 @@ struct append_integer_sequence {};
 template<typename T, T... Index, T... J>
 struct append_integer_sequence<integer_sequence<T, Index...>, integer_sequence<T, J...>>
 {
-    using type = integer_sequence<T, Index..., (J + sizeof...(I))...>;
+    using type = integer_sequence<T, Index..., (J + sizeof...(Index))...>;
 };
 
 template<typename T, T N>