Implement N3672, optional<T>.

llvm-svn: 189772

1 files changed, 14 insertions, 0 deletions

diff --git a/libcxx/test/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp b/libcxx/test/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp
index 8c21c759fa1..e4af6de1c83 100644
--- a/libcxx/test/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp
+++ b/libcxx/test/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp
@@ -34,6 +34,19 @@ void test_is_not_assignable()
     static_assert((!std::is_assignable<T, U>::value), "");
 }
 
+struct D;
+
+struct C
+{
+    template <class U>
+    D operator,(U&&);
+};
+
+struct E
+{
+    C operator=(int);
+};
+
 int main()
 {
     test_is_assignable<int&, int&> ();
@@ -41,6 +54,7 @@ int main()
     test_is_assignable<int&, double> ();
     test_is_assignable<B, A> ();
     test_is_assignable<void*&, void*> ();
+    test_is_assignable<E, int> ();
 
 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     test_is_not_assignable<int, int&> ();