From 4d6ab50ae6fba6f0e9080781c8ae25417f8a3b75 Mon Sep 17 00:00:00 2001 From: Nikolas Klauser Date: Thu, 18 Jul 2024 18:04:19 +0200 Subject: [PATCH] [libc++] Add a release note about C++03 being frozen after LLVM 21 (#95894) Co-authored-by: Louis Dionne --- libcxx/docs/ReleaseNotes/19.rst | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/libcxx/docs/ReleaseNotes/19.rst b/libcxx/docs/ReleaseNotes/19.rst index 36cb23dfde6c9e..624550f9988587 100644 --- a/libcxx/docs/ReleaseNotes/19.rst +++ b/libcxx/docs/ReleaseNotes/19.rst @@ -169,8 +169,13 @@ LLVM 20 LLVM 21 ~~~~~~~ -TODO +- The status of the C++03 implementation will be frozen after the LLVM 21 release. This means that starting in LLVM 22, non-critical bug fixes may 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 C++03 is a legacy platform, where most projects are no longer actively maintained.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++ will aim to freeze the status of the headers in C++03 mode to avoid unintended breaking changes. + See https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc for more details. + + If you are using C++03 in your project, you should consider moving to a newer version of the Standard to get the most out of libc++. ABI Affecting Changes ---------------------