__cpp_lib_atomic_is_always_lock_free201603L(C++17)constexpr atomic<T>::is_always_lock_free See also is_lock_free checks if the atomic object is lock-free (public member function) atomic_is_lock_free (C++11) checks if the atomic type's operations are lock-free ...
(modified) libcxx/test/std/atomics/atomics.lockfree/is_always_lock_free.pass.cpp (+1-1) diff --git a/libcxx/test/std/atomics/atomics.lockfree/is_always_lock_free.pass.cpp b/libcxx/test/std/atomics/atomics.lockfree/is_always_lock_free.pass.cppindex 1ebe31375079b8..e922bc7413514a 1006...
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static constexpr bool is_always_lock_free = /*implementation-defined*/; (since C++20) Equals true if the operations on this atomic_ref type is always lock-free and false if it is never or sometimes lock-free. The value of this constant is consistent with the result of member function ...