libc++ implements its' hash objects as deriving from std::unary_function, and the tests test for that. STL @ MS pointed out that the standard doesn't requie these objects to derive from unary_function, and so the tests should not require that either. Change the tests to check for the embedded typedefs - which ARE required. No change to the library.

llvm-svn: 225403

libcxx/test/std/experimental/string.view/string.view.hash/string_view.pass.cpp

@@ -29,8 +29,8 @@ void
 test()
 {
     typedef std::hash<T> H;
-    static_assert((std::is_base_of<std::unary_function<T, std::size_t>,
-                                   H>::value), "");
+    static_assert((std::is_same<typename H::argument_type, T>::value), "" );
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
     H h;
 //     std::string g1 = "1234567890";
 //     std::string g2 = "1234567891";