1 files changed, 31 insertions, 0 deletions
diff --git a/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/copy.pass.cpp b/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/copy.pass.cpp
new file mode 100644
index 000000000000..89c22250b306
--- /dev/null
+++ b/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/copy.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static char_type* copy(char_type* s1, const char_type* s2, size_t n);
+
+#include <string>
+#include <cassert>
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+    char32_t s1[] = {1, 2, 3};
+    char32_t s2[3] = {0};
+    assert(std::char_traits<char32_t>::copy(s2, s1, 3) == s2);
+    assert(s2[0] == char32_t(1));
+    assert(s2[1] == char32_t(2));
+    assert(s2[2] == char32_t(3));
+    assert(std::char_traits<char32_t>::copy(NULL, s1, 0) == NULL);
+    assert(std::char_traits<char32_t>::copy(s1, NULL, 0) == s1);
+#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+}