[llvm-branch-commits] [clang] release/18.x: [Headers] Don't declare unreachable() from stddef.h in C++ (#86748) (PR #87696)

[Tom Stellard via llvm-branch-commits]

tstellar wrote:

Hi @ian-twilightcoder  (or anyone else). If you would like to add a note about this fix in the release notes (completely optional). Please reply to this comment with a one or two sentence description of the fix.

https://github.com/llvm/llvm-project/pull/87696