1 files changed, 52 insertions, 0 deletions
diff --git a/test/std/utilities/meta/meta.trans/meta.trans.other/common_type.pass.cpp b/test/std/utilities/meta/meta.trans/meta.trans.other/common_type.pass.cpp
new file mode 100644
index 000000000000..91bf7e7654e0
--- /dev/null
+++ b/test/std/utilities/meta/meta.trans/meta.trans.other/common_type.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.
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// common_type
+
+#include <type_traits>
+
+int main()
+{
+    static_assert((std::is_same<std::common_type<int>::type, int>::value), "");
+    static_assert((std::is_same<std::common_type<char>::type, char>::value), "");
+#if _LIBCPP_STD_VER > 11
+    static_assert((std::is_same<std::common_type_t<int>,   int>::value), "");
+    static_assert((std::is_same<std::common_type_t<char>, char>::value), "");
+#endif
+
+    static_assert((std::is_same<std::common_type<               int>::type, int>::value), "");
+    static_assert((std::is_same<std::common_type<const          int>::type, int>::value), "");
+    static_assert((std::is_same<std::common_type<      volatile int>::type, int>::value), "");
+    static_assert((std::is_same<std::common_type<const volatile int>::type, int>::value), "");
+
+    static_assert((std::is_same<std::common_type<int,           int>::type, int>::value), "");
+    static_assert((std::is_same<std::common_type<int,     const int>::type, int>::value), "");
+    
+    static_assert((std::is_same<std::common_type<long,       const int>::type, long>::value), "");
+    static_assert((std::is_same<std::common_type<const long,       int>::type, long>::value), "");
+    static_assert((std::is_same<std::common_type<long,    volatile int>::type, long>::value), "");
+    static_assert((std::is_same<std::common_type<volatile long,    int>::type, long>::value), "");
+    static_assert((std::is_same<std::common_type<const long, const int>::type, long>::value), "");
+
+    static_assert((std::is_same<std::common_type<double, char>::type, double>::value), "");
+    static_assert((std::is_same<std::common_type<short, char>::type, int>::value), "");
+#if _LIBCPP_STD_VER > 11
+    static_assert((std::is_same<std::common_type_t<double, char>, double>::value), "");
+    static_assert((std::is_same<std::common_type_t<short, char>, int>::value), "");
+#endif
+
+    static_assert((std::is_same<std::common_type<double, char, long long>::type, double>::value), "");
+    static_assert((std::is_same<std::common_type<unsigned, char, long long>::type, long long>::value), "");
+#if _LIBCPP_STD_VER > 11
+    static_assert((std::is_same<std::common_type_t<double, char, long long>, double>::value), "");
+    static_assert((std::is_same<std::common_type_t<unsigned, char, long long>, long long>::value), "");
+#endif
+}