From 18d48a202ed36002228729a48ca5cda980a065f1 Mon Sep 17 00:00:00 2001
From: quantumwizard <quantumwizard@users.noreply.github.com>
Date: Thu, 28 May 2020 22:59:08 -0700
Subject: [PATCH 1/3] Allocate member variables with custom allocator

Since a custome Allocator can by provided, I think it should be used with the member std::vector variables
---
 include/boost/format/format_class.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/boost/format/format_class.hpp b/include/boost/format/format_class.hpp
index a7ccc29e..c8a578d5 100644
--- a/include/boost/format/format_class.hpp
+++ b/include/boost/format/format_class.hpp
@@ -161,8 +161,8 @@ namespace boost {
         void make_or_reuse_data(std::size_t nbitems);// used for (re-)initialisation
 
         // member data --------------------------------------------//
-        std::vector<format_item_t>  items_; // each '%..' directive leads to a format_item
-        std::vector<bool> bound_; // stores which arguments were bound. size() == 0 || num_args
+        std::vector<format_item_t, Alloc>  items_; // each '%..' directive leads to a format_item
+        std::vector<bool, Alloc> bound_; // stores which arguments were bound. size() == 0 || num_args
 
         int              style_; // style of format-string :  positional or not, etc
         int             cur_arg_; // keep track of wich argument is current

From 92c61ac9f236754838ee6a1478d88f614933338f Mon Sep 17 00:00:00 2001
From: quantumwizard <quantumwizard@users.noreply.github.com>
Date: Fri, 29 May 2020 09:11:28 -0700
Subject: [PATCH 2/3] rebinding allocator for vector types

---
 include/boost/format/format_class.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/boost/format/format_class.hpp b/include/boost/format/format_class.hpp
index c8a578d5..b3d8445d 100644
--- a/include/boost/format/format_class.hpp
+++ b/include/boost/format/format_class.hpp
@@ -161,8 +161,8 @@ namespace boost {
         void make_or_reuse_data(std::size_t nbitems);// used for (re-)initialisation
 
         // member data --------------------------------------------//
-        std::vector<format_item_t, Alloc>  items_; // each '%..' directive leads to a format_item
-        std::vector<bool, Alloc> bound_; // stores which arguments were bound. size() == 0 || num_args
+        std::vector<format_item_t,typename Alloc::template rebind<format_item_t>::other >  items_; // each '%..' directive leads to a format_item
+        std::vector<bool, typename Alloc::template rebind<bool>::other > bound_; // stores which arguments were bound. size() == 0 || num_args
 
         int              style_; // style of format-string :  positional or not, etc
         int             cur_arg_; // keep track of wich argument is current

From a5615013a481fff593e245a5a4d4ae61e6cc6d04 Mon Sep 17 00:00:00 2001
From: quantumwizard <quantumwizard@users.noreply.github.com>
Date: Mon, 1 Jun 2020 13:23:02 -0700
Subject: [PATCH 3/3] using boost::allocator_rebind

using boost::allocator_rebind so it will work with bost c++17 deprecation of std::allocator::rebind
---
 include/boost/format/format_class.hpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/boost/format/format_class.hpp b/include/boost/format/format_class.hpp
index b3d8445d..80f8cd9c 100644
--- a/include/boost/format/format_class.hpp
+++ b/include/boost/format/format_class.hpp
@@ -23,6 +23,7 @@
 #include <boost/format/internals_fwd.hpp>
 #include <boost/format/internals.hpp>
 #include <boost/format/alt_sstream.hpp>
+#include <boost/core/allocator_access.hpp>
 
 namespace boost {
 
@@ -161,8 +162,8 @@ namespace boost {
         void make_or_reuse_data(std::size_t nbitems);// used for (re-)initialisation
 
         // member data --------------------------------------------//
-        std::vector<format_item_t,typename Alloc::template rebind<format_item_t>::other >  items_; // each '%..' directive leads to a format_item
-        std::vector<bool, typename Alloc::template rebind<bool>::other > bound_; // stores which arguments were bound. size() == 0 || num_args
+        std::vector<format_item_t, typename boost::allocator_rebind<Alloc, format_item_t>::type >  items_; // each '%..' directive leads to a format_item
+        std::vector<bool, typename boost::allocator_rebind<Alloc, bool>::type > bound_; // stores which arguments were bound. size() == 0 || num_args
 
         int              style_; // style of format-string :  positional or not, etc
         int             cur_arg_; // keep track of wich argument is current