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[clang] Add release note for int->enum conversion change. #144407

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Jun 17, 2025
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[clang] Add release note for int->enum conversion change. #144407

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4 changes: 3 additions & 1 deletion clang/docs/ReleaseNotes.rst
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Expand Up @@ -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
---------------------------
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