From 08d62ac444883f8c78bdaa79d255408a7336d1ff Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sat, 12 Jun 2021 05:42:03 +0300
Subject: [PATCH] Restore Sun workaround

---
 include/boost/system/detail/error_category.hpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/boost/system/detail/error_category.hpp b/include/boost/system/detail/error_category.hpp
index b649ef9..8b5ba51 100644
--- a/include/boost/system/detail/error_category.hpp
+++ b/include/boost/system/detail/error_category.hpp
@@ -155,9 +155,11 @@ public:
     }
 
 #if defined(BOOST_SYSTEM_HAS_SYSTEM_ERROR)
-
+# if defined(__SUNPRO_CC) // trailing __global is not supported
+    operator std::error_category const & () const;
+# else
     operator std::error_category const & () const BOOST_SYMBOL_VISIBLE;
-
+# endif
 #endif
 };