[all-commits] [llvm/llvm-project] 684a61: [libc++][chrono] Remove non-standard relational op...

[A. Jiang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 684a61506a3ddc943b8baef1d14c96bbf82e6c04
      https://github.com/llvm/llvm-project/commit/684a61506a3ddc943b8baef1d14c96bbf82e6c04
  Author: A. Jiang <de34 at live.cn>
  Date:   2024-07-18 (Thu, 18 Jul 2024)

  Changed paths:
    M libcxx/docs/ReleaseNotes/19.rst
    M libcxx/docs/ReleaseNotes/20.rst
    M libcxx/include/__chrono/weekday.h
    M libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/comparisons.pass.cpp

  Log Message:
  -----------
  [libc++][chrono] Remove non-standard relational operators for `std::chrono::weekday` (#98730)

These operators are absent in https://eel.is/c++draft/time.syn and a note in
https://eel.is/c++draft/time.cal.wd.overview#1 indicates that the absence is 
intended.

This patch removes the undocumented extension, while providing a migration path
for vendors by providing the `_LIBCPP_ENABLE_REMOVED_WEEKDAY_RELATIONAL_OPERATORS`
macro. This macro will be honored for the LLVM 19 release and will be removed after 
that, at which point allocator will be removed unconditionally.



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