[all-commits] [llvm/llvm-project] 825658: [libc++] fix `counting_semaphore` lost wakeups (#7...

[Hui via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 825658856d94776889399a07a3939610ee1aa299
      https://github.com/llvm/llvm-project/commit/825658856d94776889399a07a3939610ee1aa299
  Author: Hui <hui.xie1990 at gmail.com>
  Date:   2024-02-05 (Mon, 05 Feb 2024)

  Changed paths:
    M libcxx/include/__atomic/atomic_sync.h
    M libcxx/include/semaphore
    A libcxx/test/std/thread/thread.semaphore/lost_wakeup.pass.cpp

  Log Message:
  -----------
  [libc++] fix `counting_semaphore` lost wakeups (#79265)

Fixes #77659
Fixes #46357

Picked up from https://reviews.llvm.org/D114119