1 files changed, 52 insertions, 0 deletions
diff --git a/libcxx/test/std/atomics/atomics.lockfree/lockfree.pass.cpp b/libcxx/test/std/atomics/atomics.lockfree/lockfree.pass.cpp
new file mode 100644
index 00000000000..a975a69a66f
--- /dev/null
+++ b/libcxx/test/std/atomics/atomics.lockfree/lockfree.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: libcpp-has-no-threads
+
+// <atomic>
+
+// #define ATOMIC_CHAR_LOCK_FREE unspecified
+// #define ATOMIC_CHAR16_T_LOCK_FREE unspecified
+// #define ATOMIC_CHAR32_T_LOCK_FREE unspecified
+// #define ATOMIC_WCHAR_T_LOCK_FREE unspecified
+// #define ATOMIC_SHORT_LOCK_FREE unspecified
+// #define ATOMIC_INT_LOCK_FREE unspecified
+// #define ATOMIC_LONG_LOCK_FREE unspecified
+// #define ATOMIC_LLONG_LOCK_FREE unspecified
+
+#include <atomic>
+#include <cassert>
+
+int main()
+{
+    assert(ATOMIC_CHAR_LOCK_FREE == 0 ||
+           ATOMIC_CHAR_LOCK_FREE == 1 ||
+           ATOMIC_CHAR_LOCK_FREE == 2);
+    assert(ATOMIC_CHAR16_T_LOCK_FREE == 0 ||
+           ATOMIC_CHAR16_T_LOCK_FREE == 1 ||
+           ATOMIC_CHAR16_T_LOCK_FREE == 2);
+    assert(ATOMIC_CHAR32_T_LOCK_FREE == 0 ||
+           ATOMIC_CHAR32_T_LOCK_FREE == 1 ||
+           ATOMIC_CHAR32_T_LOCK_FREE == 2);
+    assert(ATOMIC_WCHAR_T_LOCK_FREE == 0 ||
+           ATOMIC_WCHAR_T_LOCK_FREE == 1 ||
+           ATOMIC_WCHAR_T_LOCK_FREE == 2);
+    assert(ATOMIC_SHORT_LOCK_FREE == 0 ||
+           ATOMIC_SHORT_LOCK_FREE == 1 ||
+           ATOMIC_SHORT_LOCK_FREE == 2);
+    assert(ATOMIC_INT_LOCK_FREE == 0 ||
+           ATOMIC_INT_LOCK_FREE == 1 ||
+           ATOMIC_INT_LOCK_FREE == 2);
+    assert(ATOMIC_LONG_LOCK_FREE == 0 ||
+           ATOMIC_LONG_LOCK_FREE == 1 ||
+           ATOMIC_LONG_LOCK_FREE == 2);
+    assert(ATOMIC_LLONG_LOCK_FREE == 0 ||
+           ATOMIC_LLONG_LOCK_FREE == 1 ||
+           ATOMIC_LLONG_LOCK_FREE == 2);
+}