[atomics.flag] completed. Initialization is not working on clang and can't be made to work without defaulted default constructors.
llvm-svn: 115207
diff --git a/libcxx/test/atomics/atomics.flag/atomic_flag_clear.pass.cpp b/libcxx/test/atomics/atomics.flag/atomic_flag_clear.pass.cpp
new file mode 100644
index 0000000..9c52bcc
--- /dev/null
+++ b/libcxx/test/atomics/atomics.flag/atomic_flag_clear.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// void atomic_flag_clear(volatile atomic_flag*);
+// void atomic_flag_clear(atomic_flag*);
+
+#include <atomic>
+#include <cassert>
+
+int main()
+{
+ {
+ std::atomic_flag f;
+ f.test_and_set();
+ atomic_flag_clear(&f);
+ assert(f.test_and_set() == 0);
+ }
+ {
+ volatile std::atomic_flag f;
+ f.test_and_set();
+ atomic_flag_clear(&f);
+ assert(f.test_and_set() == 0);
+ }
+}