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6591e42269
Adds __cpp_lib_atomic_wait feature test macro which was overlooked in the initial commit of this feature. Replaces uses of _GLIBCXX_HAVE_ATOMIC_WAIT. libstdc++-v3/ChangeLog: * include/bits/atomic_base.h: Replace usage of _GLIBCXX_HAVE_ATOMIC_WAIT with __cpp_lib_atomic_wait. * include/bits/atomic_timed_wait.h: Likewise. * include/bits/atomic_wait.h: Define __cpp_lib_atomic_wait feature test macro. * include/bits/semaphore_base.h: Replace usage of _GLIBCXX_HAVE_ATOMIC_WAIT with __cpp_lib_atomic_wait. * include/std/atomic: Likewise. * include/std/latch: Likewise. * include/std/semaphore: Likewise. * include/std/version: Define __cpp_lib_atomic wait feature test macro and replace usage of _GLIBCXX_HAVE_ATOMIC_WAIT. * testsuite/29_atomics/atomic/wait_notify/1.cc: New test. * testsuite/29_atomics/atomic/wait_notify/2.cc: Likewise.
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