From e1a30831fef1935382a6621e2b83ac8d9d8c2620 Mon Sep 17 00:00:00 2001
From: joaquintides <joaquin@tid.es>
Date: Mon, 7 Aug 2023 10:50:17 +0200
Subject: [PATCH] editorial

---
 include/boost/unordered/detail/serialize_container.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/unordered/detail/serialize_container.hpp b/include/boost/unordered/detail/serialize_container.hpp
index b4174ea4..76506c6f 100644
--- a/include/boost/unordered/detail/serialize_container.hpp
+++ b/include/boost/unordered/detail/serialize_container.hpp
@@ -162,7 +162,7 @@ template<typename Map> struct load_or_save_unordered_map<Map,false> /* load */
     ar>>core::make_nvp("mapped_version",mapped_version);
 
     x.clear();
-    x.reserve(s);
+    x.reserve(s); /* critical so that iterator tracking is stable */
 
     for(std::size_t n=0;n<s;++n){
       archive_constructed<key_type>    key("key",ar,key_version);