[all-commits] [llvm/llvm-project] fc89e9: [C++20] [Modules] Emit an warning for experimental...

[Chuanqi Xu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fc89e9044d0b37dcd4e3f085f21bef1b21d2ab8d
      https://github.com/llvm/llvm-project/commit/fc89e9044d0b37dcd4e3f085f21bef1b21d2ab8d
  Author: Chuanqi Xu <yedeng.yd at linux.alibaba.com>
  Date:   2023-05-18 (Thu, 18 May 2023)

  Changed paths:
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/lib/Sema/SemaModule.cpp
    M clang/test/CXX/module/module.interface/p2.cpp
    M clang/test/Modules/cxx20-10-2-ex2.cpp
    M clang/test/Modules/cxx20-hu-04.cpp
    M clang/test/Modules/cxx20-include-translation.cpp
    M clang/test/Modules/merge-concepts.cppm

  Log Message:
  -----------
  [C++20] [Modules] Emit an warning for experimental header units

Currently, the header units are rarely used and it is not well tested.
To avoid further misunderstandings, let's mark it as experimental and
emit a warning when users wants to import it.

This is discussed in modules developers meeting.