[clang] Revise relnote for int->enum conversion. #145755
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Include more specifics from recent discussion on llvm#143034.
efriedma-quic
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@llvm/pr-subscribers-clang Author: Eli Friedman (efriedma-quic) ChangesInclude more specifics from recent discussion on #143034. Full diff: https://github.com/llvm/llvm-project/pull/145755.diff 1 Files Affected:
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index e1fe22393eebb..c81beb62d3f09 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -66,9 +66,10 @@ C++ Specific Potentially Breaking Changes
- 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)
+- Checking for integer to 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. The Boost numeric_conversion library is impacted by
+ this; it was fixed in Boost 1.81. (#GH143034)
ABI Changes in This Version
---------------------------
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erichkeane
approved these changes
Jun 25, 2025
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Backporting fixes to Boost seems like something most people won't want to mess with. We have a reference to the pull request if anyone wants to dig into the gory details. |
Thats fair I guess. |
cor3ntin
approved these changes
Jun 26, 2025
anthonyhatran
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Jun 26, 2025
Include more specifics from recent discussion on llvm#143034.
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Include more specifics from recent discussion on #143034.