https://github.com/efriedma-quic created https://github.com/llvm/llvm-project/pull/144407
This seems to be having some practical impact, so we should let people know. >From 72b5793a6b0df71ec78e691aaa1b0729273263e0 Mon Sep 17 00:00:00 2001 From: Eli Friedman <efrie...@quicinc.com> Date: Mon, 16 Jun 2025 11:04:04 -0700 Subject: [PATCH] [clang] Add release note for int->enum conversion change. This seems to be having some practical impact, so we should let people know. --- clang/docs/ReleaseNotes.rst | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst index b42d5f8425af6..e9455c0756bd9 100644 --- a/clang/docs/ReleaseNotes.rst +++ b/clang/docs/ReleaseNotes.rst @@ -65,8 +65,10 @@ C++ Specific Potentially Breaking Changes standard library already have their own bespoke builtins. - A workaround for libstdc++4.7 has been removed. Note that 4.8.3 remains the oldest supported libstdc++ version. - - Added ``!nonnull/!align`` metadata to load of references for better codegen. +- Checking for int->enum conversions in constant expressions is more strict; + in particular, ``const E x = (E)-1;`` is not treated as a constant if it's + out of range. This impacts old versions of Boost. (#GH143034) ABI Changes in This Version --------------------------- _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
