---
- branch: MAIN
  date: Sat Apr  9 23:38:57 UTC 2022
  files:
  - new: '1.4'
    old: '1.3'
    path: src/common/lib/libc/atomic/atomic_load.c
    pathrev: src/common/lib/libc/atomic/atomic_load.c@1.4
    type: modified
  - new: '1.4'
    old: '1.3'
    path: src/common/lib/libc/atomic/atomic_store.c
    pathrev: src/common/lib/libc/atomic/atomic_store.c@1.4
    type: modified
  id: 20220409T233857Z.3a34b5a987fce8dae8aca043b4b2826a36e03baa
  log: |
    libc/atomic: Fix membars in __atomic_load/store_* stubs.

    - membar_enter/exit ordering was backwards.
    - membar_enter doesn't make any sense for load anyway.
    - Switch to membar_release for store and membar_acquire for load.

    The only sensible orderings for a simple load or store are acquire or
    release, respectively, or sequential consistency.  This never
    provided correct sequential consistency before -- we should really
    make it conditional on memmodel but I don't know offhand what the
    values of memmodel might be and this is at least better than before.
  module: src
  subject: 'CVS commit: src/common/lib/libc/atomic'
  unixtime: '1649547537'
  user: riastradh