From 0e70115cd2c5fa1f44f5550bc024ac34ef8a9e2e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ion=20Gazta=C3=B1aga?= <igaztanaga@gmail.com>
Date: Fri, 2 Jan 2026 20:14:50 +0100
Subject: [PATCH] Add static const npos definition

---
 include/boost/container/string.hpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/boost/container/string.hpp b/include/boost/container/string.hpp
index fce660d..313cc63 100644
--- a/include/boost/container/string.hpp
+++ b/include/boost/container/string.hpp
@@ -624,7 +624,7 @@ class basic_string
    typedef BOOST_CONTAINER_IMPDEF(const_pointer)                                       const_iterator;
    typedef BOOST_CONTAINER_IMPDEF(boost::container::reverse_iterator<iterator>)        reverse_iterator;
    typedef BOOST_CONTAINER_IMPDEF(boost::container::reverse_iterator<const_iterator>)  const_reverse_iterator;
-   BOOST_STATIC_CONSTEXPR size_type npos = size_type(-1);
+   static const size_type npos = size_type(-1);
 
    #ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
    private:
@@ -3145,6 +3145,10 @@ wstring;
 
 #else
 
+template <class CharT, class Traits, class Allocator>
+const typename basic_string<CharT, Traits, Allocator>::size_type
+    basic_string<CharT, Traits, Allocator>::npos;
+
 template<class S>
 struct is_string
 {