From 43f8e5e9334da7b488b706ff44eaf36a54650a98 Mon Sep 17 00:00:00 2001
From: joaquintides <joaquin@tid.es>
Date: Wed, 28 Sep 2022 09:42:37 +0200
Subject: [PATCH] avoided being too smart in new_arrays's memory initialization

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

diff --git a/include/boost/unordered/detail/foa.hpp b/include/boost/unordered/detail/foa.hpp
index 6bcc2b45..2970b594 100644
--- a/include/boost/unordered/detail/foa.hpp
+++ b/include/boost/unordered/detail/foa.hpp
@@ -680,7 +680,7 @@ private:
       new_arrays_.groups=boost::to_address(group_alloc_traits::allocate(gal,groups_size));
       // TODO: explain why memset
       std::memset(
-        new_arrays_.groups,0,sizeof(group_type)*groups_size-1);
+        new_arrays_.groups,0,sizeof(group_type)*groups_size);
       new_arrays_.groups[groups_size-1].set_sentinel();
       BOOST_TRY{
         new_arrays_.elements=boost::to_address(alloc_traits::allocate(al,groups_size*N-1));