[Bug libstdc++/103934] New: std::atomic_flag: multiple C++20 functions missing

[gcc_bugzilla at axeitado dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103934

            Bug ID: 103934
           Summary: std::atomic_flag: multiple C++20 functions missing
           Product: gcc
           Version: 11.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gcc_bugzilla at axeitado dot com
  Target Milestone: ---

atomic_flag_test(_explicit), atomic_flag_wait(_explicit),
atomic_flag_notify_one and atomic_flag_notify_all are missing. This seems an
oversight, as their definition should be trivial.