From 50973dc10ea16931245ea61a00b2ce9041acc5ba Mon Sep 17 00:00:00 2001
From: Stephan Bergmann <[email protected]>
Date: Wed, 4 Jan 2023 17:33:31 +0100
Subject: [PATCH] Avoid boost::phoenix::placeholders::uarg1..10 ODR violations

Those variables, defined in an include file, had external linkage, causing ODR
violations.  Make them const to implicitly give them internal linkage.
---
 boost/phoenix/stl/tuple.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/boost/phoenix/stl/tuple.hpp b/boost/phoenix/stl/tuple.hpp
index a83014a..7f61a40 100644
--- a/boost/phoenix/stl/tuple.hpp
+++ b/boost/phoenix/stl/tuple.hpp
@@ -110,7 +110,7 @@ namespace boost { namespace phoenix {
     namespace placeholders {
         #define BOOST_PP_LOCAL_LIMITS (1, BOOST_PHOENIX_ARG_LIMIT)
         #define BOOST_PP_LOCAL_MACRO(N)                                                \
-            auto uarg##N =                                                             \
+            auto const uarg##N =                                                       \
             boost::phoenix::get_<(N)-1>(boost::phoenix::placeholders::arg1);
         #include BOOST_PP_LOCAL_ITERATE()
     }
-- 
2.27.0