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[clang] Revise relnote for int->enum conversion. #145755

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Jun 26, 2025
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[clang] Revise relnote for int->enum conversion. #145755

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