From eb9075c65f9a5fc2469869472245cf5aa3d6df26 Mon Sep 17 00:00:00 2001
From: Johan Crone <johan.crone@cikoriaembedded.se>
Date: Wed, 14 Jan 2026 16:06:51 +0100
Subject: [PATCH] Fix #14317 Syntax error using macro inside ifdef block

---
 externals/simplecpp/simplecpp.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/externals/simplecpp/simplecpp.cpp b/externals/simplecpp/simplecpp.cpp
index 581c9b10990..c3ca98ea8ea 100644
--- a/externals/simplecpp/simplecpp.cpp
+++ b/externals/simplecpp/simplecpp.cpp
@@ -3339,7 +3339,7 @@ void simplecpp::preprocess(simplecpp::TokenList &output, const simplecpp::TokenL
         if (dui.undefined.find(macroname) != dui.undefined.end())
             continue;
         const std::string lhs(macrostr.substr(0,eq));
-        const std::string rhs(eq==std::string::npos ? std::string("1") : macrostr.substr(eq+1));
+        const std::string rhs(eq == std::string::npos ? lhs : macrostr.substr(eq + 1));
         const Macro macro(lhs, rhs, dummy);
         macros.insert(std::pair<TokenString,Macro>(macro.name(), macro));
     }