From a10723efcd611977c5e4a875b9cb1de920732d42 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Tomasz=20Kami=C5=84ski?= <tkaminsk@redhat.com>
Date: Tue, 8 Jul 2025 09:30:06 +0200
Subject: [PATCH] libstdc++: Document that LWG 3881 is resolved, by using
 different apporach.

libstdc++-v3/ChangeLog:

	* include/std/queue (formatter<queue<_Tp, _Container>, _CharT>)
	(formatter<priority_queue<_Tp, _Container, _Compare>, _CharT>):
	Add _GLIBCXX_RESOLVE_LIB_DEFECTS comments.
---
 libstdc++-v3/include/std/queue | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/include/std/queue b/libstdc++-v3/include/std/queue
index 90525897da7..1b76088b31b 100644
--- a/libstdc++-v3/include/std/queue
+++ b/libstdc++-v3/include/std/queue
@@ -105,7 +105,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	{ return _M_f.format(__a.c, __fc); }
 
     private:
-      // Standard uses formatter<ref_view<_Container>, _CharT>.
+      // Standard uses formatter<ref_view<_Container>, _CharT>, but range_formatter
+      // provides same behavior.
+      // _GLIBCXX_RESOLVE_LIB_DEFECTS
+      // 3881. Incorrect formatting of container adapters backed by std::string
       range_formatter<_Tp, _CharT> _M_f;
     };
 
@@ -136,7 +139,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	{ return _M_f.format(__a.c, __fc); }
 
     private:
-      // Standard uses formatter<ref_view<_Container>, _CharT>.
+      // Standard uses formatter<ref_view<_Container>, _CharT>, but range_formatter
+      // provides same behavior.
+      // _GLIBCXX_RESOLVE_LIB_DEFECTS
+      // 3881. Incorrect formatting of container adapters backed by std::string
       range_formatter<_Tp, _CharT> _M_f;
     };
 
-- 
2.47.2