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[Clang] [NFC] Add release note about libstdc++ bug #93059

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May 22, 2024
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[Clang] [NFC] Add release note about libstdc++ bug #93059

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[Clang] Add release note about libstdc++ bug
Sirraide May 22, 2024
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Address review feedback
Sirraide May 22, 2024
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12 changes: 12 additions & 0 deletions clang/docs/ReleaseNotes.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,18 @@ C++ Specific Potentially Breaking Changes
- Clang now performs semantic analysis for unary operators with dependent operands
that are known to be of non-class non-enumeration type prior to instantiation.

This change uncovered a bug in libstdc++ 14.1.0 which may cause compile failures
on systems using that version of libstdc++ and Clang 19, with an error that looks
something like this:

.. code-block:: text

<source>:4:5: error: expression is not assignable
4 | ++this;
| ^ ~~~~

To fix this, update libstdc++ to version 14.1.1 or greater.

ABI Changes in This Version
---------------------------
- Fixed Microsoft name mangling of implicitly defined variables used for thread
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