1 files changed, 54 insertions, 0 deletions
diff --git a/test/std/localization/c.locales/clocale.pass.cpp b/test/std/localization/c.locales/clocale.pass.cpp
new file mode 100644
index 0000000000000..a90725bfa3672
--- /dev/null
+++ b/test/std/localization/c.locales/clocale.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <clocale>
+
+#include <clocale>
+#include <type_traits>
+
+#ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
+
+#ifndef LC_ALL
+#error LC_ALL not defined
+#endif
+
+#ifndef LC_COLLATE
+#error LC_COLLATE not defined
+#endif
+
+#ifndef LC_CTYPE
+#error LC_CTYPE not defined
+#endif
+
+#ifndef LC_MONETARY
+#error LC_MONETARY not defined
+#endif
+
+#ifndef LC_NUMERIC
+#error LC_NUMERIC not defined
+#endif
+
+#ifndef LC_TIME
+#error LC_TIME not defined
+#endif
+
+#endif // !_LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+int main()
+{
+    std::lconv lc;
+#ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
+    static_assert((std::is_same<decltype(std::setlocale(0, "")), char*>::value), "");
+#endif
+    static_assert((std::is_same<decltype(std::localeconv()), std::lconv*>::value), "");
+}