From 33c788d37ba300578f0f01c7e5b27eeb21cd9588 Mon Sep 17 00:00:00 2001
From: Akim Demaille <akim.demaille@gmail.com>
Date: Wed, 14 Nov 2018 18:05:41 +0100
Subject: [PATCH] c++: use YY_CPLUSPLUS

* data/c++.m4: here.
---
 data/c++.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/data/c++.m4 b/data/c++.m4
index fab08724..3469b7fa 100644
--- a/data/c++.m4
+++ b/data/c++.m4
@@ -278,7 +278,7 @@ m4_define([b4_symbol_type_declare],
       location_type location;])[
 
     private:
-#if !defined __cplusplus || __cplusplus < 201103L
+#if YY_CPLUSPLUS < 201103L
       /// Assignment operator.
       basic_symbol& operator= (const basic_symbol& other);
 #endif