[Bug libstdc++/94069] [9/10 Regression] <shared_mutex> doesn't compile unless PTHREAD_RWLOCK_INITIALIZER is defined

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94069

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2020-03-06
      Known to work|                            |8.4.0
     Ever confirmed|0                           |1
      Known to fail|                            |10.0, 9.2.1