Add tests making sure that optional<T>s can be compared at compile time; this functionality was enabled by N3789

llvm-svn: 192051

1 files changed, 3 insertions, 16 deletions

diff --git a/libcxx/test/utilities/optional/optional.comp_with_t/less_than.pass.cpp b/libcxx/test/utilities/optional/optional.comp_with_t/less_than.pass.cpp
index ffc4441cee3..c71c8cc91d9 100644
--- a/libcxx/test/utilities/optional/optional.comp_with_t/less_than.pass.cpp
+++ b/libcxx/test/utilities/optional/optional.comp_with_t/less_than.pass.cpp
@@ -23,22 +23,9 @@ struct X
     constexpr X(int i) : i_(i) {}
 };
 
-namespace std
-{
-
-template <>
-struct less<X>
-{
-    constexpr
-    bool
-    operator()(const X& x, const X& y) const
-    {
-        return x.i_ < y.i_;
-    }
-};
-
-}
-
+constexpr bool operator < ( const X &rhs, const X &lhs )
+    { return rhs.i_ < lhs.i_ ; }
+    
 #endif
 
 int main()