Make std::is_assignable tolerate references to incomplete types.

llvm-svn: 276599

1 files changed, 5 insertions, 2 deletions

diff --git a/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp b/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp
index b734a1aa60d..f4736e71342 100644
--- a/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp
+++ b/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp
@@ -43,7 +43,7 @@ void test_is_not_assignable()
 
 struct D;
 
-#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#if TEST_STD_VER >= 11
 struct C
 {
     template <class U>
@@ -59,6 +59,8 @@ struct E
 template <typename T>
 struct X { T t; };
 
+struct Incomplete;
+
 int main()
 {
     test_is_assignable<int&, int&> ();
@@ -67,7 +69,7 @@ int main()
     test_is_assignable<B, A> ();
     test_is_assignable<void*&, void*> ();
 
-#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#if TEST_STD_VER >= 11
     test_is_assignable<E, int> ();
 
     test_is_not_assignable<int, int&> ();
@@ -80,4 +82,5 @@ int main()
 
 //  pointer to incomplete template type
 	test_is_assignable<X<D>*&, X<D>*> ();
+    test_is_not_assignable<Incomplete&, Incomplete const&>();
 }