From 9b64341966fec46b46ee7410dba3c1011b2b3e95 Mon Sep 17 00:00:00 2001
From: Dirk Zimoch <dirk.zimoch@psi.ch>
Date: Fri, 16 Jan 2026 12:07:34 +0100
Subject: [PATCH] fix gcc-15 problem

gcc-15 mangles variables inside namespaces even if they are declared
extern "C". That causes linker errors. This is probably a bug in gcc-15.
Observed with gcc version 15.1.1.
---
 devOpcuaSup/iocshIntegration.cpp | 6 ++----
 devOpcuaSup/opcuaItemRecord.cpp  | 3 ++-
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/devOpcuaSup/iocshIntegration.cpp b/devOpcuaSup/iocshIntegration.cpp
index 5db2f6eb..0260e136 100644
--- a/devOpcuaSup/iocshIntegration.cpp
+++ b/devOpcuaSup/iocshIntegration.cpp
@@ -1106,8 +1106,6 @@ void opcuaIocshRegister ()
     iocshRegister(&opcuaShowDataFuncDef, opcuaShowDataCallFunc);
 }
 
-extern "C" {
-epicsExportRegistrar(opcuaIocshRegister);
-}
-
 } // namespace
+
+extern "C" { epicsExportRegistrar(opcuaIocshRegister); }
diff --git a/devOpcuaSup/opcuaItemRecord.cpp b/devOpcuaSup/opcuaItemRecord.cpp
index 8a45fa90..ab0f89b4 100644
--- a/devOpcuaSup/opcuaItemRecord.cpp
+++ b/devOpcuaSup/opcuaItemRecord.cpp
@@ -203,6 +203,7 @@ rset opcuaItemRSET = {
     get_control_double,
     get_alarm_double
 };
-extern "C" { epicsExportAddress(rset, opcuaItemRSET); }
 
 } // namespace
+
+extern "C" { epicsExportAddress(rset, opcuaItemRSET); }