From 5debb8a04133b1ef2d058137ce6e02929a1225c4 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Thu, 5 May 2022 02:30:07 +0300
Subject: [PATCH] Update revision history

---
 doc/system/changes.adoc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/system/changes.adoc b/doc/system/changes.adoc
index 7b18bed..fab368a 100644
--- a/doc/system/changes.adoc
+++ b/doc/system/changes.adoc
@@ -8,6 +8,13 @@ https://www.boost.org/LICENSE_1_0.txt
 # Revision History
 :idprefix:
 
+## Changes in Boost 1.80
+
+* When an `error_code` is converted to `std::error_code` and then back
+  to `error_code`, the original is now restored, if possible.
+* Reworked the conversion from `error_category` to `std::error_category`
+  to avoid the one-time allocation that shows up on leak checkers.
+
 ## Changes in Boost 1.79
 
 * Added a `boost::source_location` parameter to `throw_exception_from_error`.