From 78de6f2bf2711895fa5fa452064e69869d2118c5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ion=20Gazta=C3=B1aga?= <igaztanaga@gmail.com>
Date: Sun, 6 Mar 2022 21:17:27 +0100
Subject: [PATCH] Fix sign conversion warning

---
 include/boost/container/vector.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/container/vector.hpp b/include/boost/container/vector.hpp
index f38de63..80df0ce 100644
--- a/include/boost/container/vector.hpp
+++ b/include/boost/container/vector.hpp
@@ -1751,7 +1751,7 @@ private:
    BOOST_CONTAINER_ATTRIBUTE_NODISCARD BOOST_CONTAINER_FORCEINLINE reference at(size_type n)
    {
       this->priv_throw_if_out_of_range(n);
-      return this->m_holder.start()[n];
+      return this->m_holder.start()[difference_type(n)];
    }
 
    //! <b>Requires</b>: size() > n.