[Clang] restrict use of attribute names reserved by the C++ standard (#106036)

Fixes #92196

https://eel.is/c++draft/macro.names#2
> A translation unit shall not #define or #undef names lexically
identical to keywords, to the identifiers listed in Table
[4](https://eel.is/c++draft/lex.name#tab:lex.name.special), or to the
[attribute-token](https://eel.is/c++draft/dcl.attr.grammar#nt:attribute-token)s
described in [[dcl.attr]](https://eel.is/c++draft/dcl.attr), except that
the names likely and unlikely may be defined as function-like macros
([[cpp.replace]](https://eel.is/c++draft/cpp.replace))[.](https://eel.is/c++draft/macro.names#2.sentence-1)

GitOrigin-RevId: 4018317407006b2c632fbb75729de624a2426439
14 files changed
tree: b6c679980d1826e96691e2dd4d9bf57ac0d3a97e
  1. bindings/
  2. cmake/
  3. docs/
  4. examples/
  5. include/
  6. lib/
  7. runtime/
  8. test/
  9. tools/
  10. unittests/
  11. utils/
  12. www/
  13. .clang-format
  14. .clang-tidy
  15. .gitignore
  16. CMakeLists.txt
  17. INSTALL.txt
  18. LICENSE.TXT
  19. Maintainers.rst
  20. NOTES.txt
  21. README.md
README.md

C language Family Front-end

Welcome to Clang.

This is a compiler front-end for the C family of languages (C, C++ and Objective-C) which is built as part of the LLVM compiler infrastructure project.

Unlike many other compiler frontends, Clang is useful for a number of things beyond just compiling code: we intend for Clang to be host to a number of different source-level tools. One example of this is the Clang Static Analyzer.

If you're interested in more (including how to build Clang) it is best to read the relevant websites. Here are some pointers: