From c6e03a1c54451eaab872dcdd8ab927b7efe16c9c Mon Sep 17 00:00:00 2001
From: Feng Jisen <J1senn@outlook.com>
Date: Fri, 3 Nov 2023 16:33:44 +0000
Subject: [PATCH] libstdc++: Remove redundant partial specialization in
 _Nth_type

libstdc++-v3/ChangeLog:

	* include/bits/utility.h (_Nth_type): Remove redundant partial
	specialization.

(cherry picked from commit ada871cfadd3f4960b4435f6f7f07a5aca1887d3)
---
 libstdc++-v3/include/bits/utility.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/libstdc++-v3/include/bits/utility.h b/libstdc++-v3/include/bits/utility.h
index 714e2c026801..d7385ed72fde 100644
--- a/libstdc++-v3/include/bits/utility.h
+++ b/libstdc++-v3/include/bits/utility.h
@@ -250,10 +250,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     { };
 
 #if ! __cpp_concepts // Need additional specializations to avoid ambiguities.
-  template<typename _Tp0, typename _Tp1, typename... _Rest>
-    struct _Nth_type<0, _Tp0, _Tp1, _Rest...>
-    { using type = _Tp0; };
-
   template<typename _Tp0, typename _Tp1, typename _Tp2, typename... _Rest>
     struct _Nth_type<0, _Tp0, _Tp1, _Tp2, _Rest...>
     { using type = _Tp0; };
-- 
2.47.2