From 1659dfbeba4b91c94b3d2015fcde978c6af944f5 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Fri, 24 Sep 2021 04:27:08 +0300
Subject: [PATCH] Avoid instantiating generic_category in
 error_condition::operator std::error_condition

---
 include/boost/system/detail/error_condition.hpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/include/boost/system/detail/error_condition.hpp b/include/boost/system/detail/error_condition.hpp
index c48f424..255b282 100644
--- a/include/boost/system/detail/error_condition.hpp
+++ b/include/boost/system/detail/error_condition.hpp
@@ -222,7 +222,23 @@ public:
 
     operator std::error_condition () const
     {
+// This condition must be the same as the one in error_category_impl.hpp
+#if defined(BOOST_GCC) && BOOST_GCC < 50000
+
         return std::error_condition( value(), category() );
+
+#else
+
+        if( cat_ )
+        {
+            return std::error_condition( val_, *cat_ );
+        }
+        else
+        {
+            return std::error_condition( val_, std::generic_category() );
+        }
+
+#endif
     }
 
     inline friend bool operator==( std::error_code const & lhs, error_condition const & rhs ) BOOST_NOEXCEPT