From b0e6a257f1862e217cdf19332ea0f7bad56dcddc Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Mon, 13 Dec 2021 13:36:33 +0000
Subject: [PATCH] libstdc++: Fix non-reserved name in <regex> header

libstdc++-v3/ChangeLog:

	* include/bits/regex_compiler.tcc (_Compiler::_M_match_token):
	Use reserved name for parameter.
	* testsuite/17_intro/names.cc: Check "token".
---
 libstdc++-v3/include/bits/regex_compiler.tcc | 4 ++--
 libstdc++-v3/testsuite/17_intro/names.cc     | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/include/bits/regex_compiler.tcc b/libstdc++-v3/include/bits/regex_compiler.tcc
index 956262a12c9..0e2e1321376 100644
--- a/libstdc++-v3/include/bits/regex_compiler.tcc
+++ b/libstdc++-v3/include/bits/regex_compiler.tcc
@@ -580,9 +580,9 @@ namespace __detail
   template<typename _TraitsT>
     bool
     _Compiler<_TraitsT>::
-    _M_match_token(_TokenT token)
+    _M_match_token(_TokenT __token)
     {
-      if (token == _M_scanner._M_get_token())
+      if (__token == _M_scanner._M_get_token())
 	{
 	  _M_value = _M_scanner._M_get_value();
 	  _M_scanner._M_advance();
diff --git a/libstdc++-v3/testsuite/17_intro/names.cc b/libstdc++-v3/testsuite/17_intro/names.cc
index 2a908ea9fc5..1341bed7a62 100644
--- a/libstdc++-v3/testsuite/17_intro/names.cc
+++ b/libstdc++-v3/testsuite/17_intro/names.cc
@@ -109,6 +109,7 @@
 #define func (
 #define tmp (
 #define sz (
+#define token (
 
 #if __cplusplus < 201103L
 #define uses_allocator  (