[all-commits] [llvm/llvm-project] 34e0f9: [libc++] Remove the need for `uselocale()` (#120158)

[Louis Dionne via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 34e0f9cd36e9d4eb7fd153f536c811ec668be458
      https://github.com/llvm/llvm-project/commit/34e0f9cd36e9d4eb7fd153f536c811ec668be458
  Author: Louis Dionne <ldionne.2 at gmail.com>
  Date:   2024-12-19 (Thu, 19 Dec 2024)

  Changed paths:
    M libcxx/include/CMakeLists.txt
    M libcxx/include/__locale_dir/locale_base_api.h
    M libcxx/include/__locale_dir/locale_base_api/bsd_locale_fallbacks.h
    R libcxx/include/__locale_dir/locale_guard.h
    M libcxx/include/__locale_dir/support/bsd_like.h
    M libcxx/include/__locale_dir/support/windows.h
    M libcxx/include/__support/xlocale/__nop_locale_mgmt.h
    M libcxx/include/module.modulemap
    M libcxx/src/iostream.cpp
    M libcxx/src/support/win32/locale_win32.cpp

  Log Message:
  -----------
  [libc++] Remove the need for `uselocale()` (#120158)

Instead of requiring `uselocale()` as part of the base locale API,
define __locale_guard in the few places that need it directly, without
making __locale_guard part of the base API.

In practice, most mainstream platforms never used __locale_guard, so
they also didn't need to define uselocale(), and after this patch they
actually don't define it anymore.



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