[libcxx-commits] [libcxx] [libc++] Add a release note about C++03 being frozen in LLVM 19 (PR #95894)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 updated https://github.com/llvm/llvm-project/pull/95894

>From d4ef64fd3e03b6e6e0c9bc832f65bdc1d40447a6 Mon Sep 17 00:00:00 2001
From: Nikolas Klauser <nikolasklauser at berlin.de>
Date: Tue, 18 Jun 2024 10:42:49 +0200
Subject: [PATCH] [libc++] Add a release note about C++03 being frozen in LLVM
 19

---
 libcxx/docs/ReleaseNotes/19.rst | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libcxx/docs/ReleaseNotes/19.rst b/libcxx/docs/ReleaseNotes/19.rst
index e6d8acb74aeb2..f12d2ff0d431b 100644
--- a/libcxx/docs/ReleaseNotes/19.rst
+++ b/libcxx/docs/ReleaseNotes/19.rst
@@ -155,8 +155,12 @@ LLVM 20
 
 LLVM 21
 ~~~~~~~
-TODO
 
+- The status of the C++03 implementation will be frozen. This means that non-critical bug fixes will not be back-ported
+  to C++03, including LWG issues. C++03 is a legacy platform, where most projects are no longer actively maintained. To
+  reduce the amount of fixes required to keep such legacy projects compiling with up-to-date toolchains, libc++ freezes
+  the current status of the headers and avoids making any changes to these headers.
+  See https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc for more details.
 
 ABI Affecting Changes
 ---------------------