diff --git a/test/std/containers/sequences/vector.bool/construct_default.pass.cpp b/test/std/containers/sequences/vector.bool/construct_default.pass.cpp
index 0f51c219e..80bfce1ad 100644
--- a/test/std/containers/sequences/vector.bool/construct_default.pass.cpp
+++ b/test/std/containers/sequences/vector.bool/construct_default.pass.cpp
@@ -7,10 +7,15 @@
 //
 //===----------------------------------------------------------------------===//
 
-// <vector>
 // vector<bool>
 
-// vector(const Alloc& = Alloc());
+// vector();
+// vector(const Alloc&);
+
+// This tests a conforming extension
+// For vector<>, this was added to the standard by N4258,
+//   but vector<bool> was not changed.
+
 
 #include <vector>
 #include <cassert>
@@ -24,9 +29,9 @@ void
 test0()
 {
 #if TEST_STD_VER > 14
-    static_assert((noexcept(C{})), "" );
+    LIBCPP_STATIC_ASSERT((noexcept(C{})), "" );
 #elif TEST_STD_VER >= 11
-    static_assert((noexcept(C()) == noexcept(typename C::allocator_type())), "" );
+    LIBCPP_STATIC_ASSERT((noexcept(C()) == noexcept(typename C::allocator_type())), "" );
 #endif
     C c;
     LIBCPP_ASSERT(c.__invariants());
@@ -45,9 +50,9 @@ void
 test1(const typename C::allocator_type& a)
 {
 #if TEST_STD_VER > 14
-    static_assert((noexcept(C{typename C::allocator_type{}})), "" );
+    LIBCPP_STATIC_ASSERT((noexcept(C{typename C::allocator_type{}})), "" );
 #elif TEST_STD_VER >= 11
-    static_assert((noexcept(C(typename C::allocator_type())) == std::is_nothrow_copy_constructible<typename C::allocator_type>::value), "" );
+    LIBCPP_STATIC_ASSERT((noexcept(C(typename C::allocator_type())) == std::is_nothrow_copy_constructible<typename C::allocator_type>::value), "" );
 #endif
     C c(a);
     LIBCPP_ASSERT(c.__invariants());
diff --git a/test/std/containers/sequences/vector.bool/default_noexcept.pass.cpp b/test/std/containers/sequences/vector.bool/default_noexcept.pass.cpp
index 4e71df374..e2d94e225 100644
--- a/test/std/containers/sequences/vector.bool/default_noexcept.pass.cpp
+++ b/test/std/containers/sequences/vector.bool/default_noexcept.pass.cpp
@@ -6,6 +6,7 @@
 // Source Licenses. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++98, c++03
 
 // <vector>
 
@@ -13,8 +14,9 @@
 //        noexcept(is_nothrow_default_constructible<allocator_type>::value);
 
 // This tests a conforming extension
+// For vector<>, this was added to the standard by N4258,
+//   but vector<bool> was not changed.
 
-// UNSUPPORTED: c++98, c++03
 
 #include <vector>
 #include <cassert>
@@ -40,7 +42,6 @@ int main()
         typedef std::vector<bool, test_allocator<bool>> C;
         static_assert(std::is_nothrow_default_constructible<C>::value, "");
     }
-#endif // _LIBCPP_VERSION
     {
         typedef std::vector<bool, other_allocator<bool>> C;
         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
@@ -49,4 +50,5 @@ int main()
         typedef std::vector<bool, some_alloc<bool>> C;
         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
     }
+#endif // _LIBCPP_VERSION
 }
diff --git a/test/std/containers/sequences/vector/vector.cons/default_noexcept.pass.cpp b/test/std/containers/sequences/vector/vector.cons/default_noexcept.pass.cpp
index b244f75f2..f8c932a02 100644
--- a/test/std/containers/sequences/vector/vector.cons/default_noexcept.pass.cpp
+++ b/test/std/containers/sequences/vector/vector.cons/default_noexcept.pass.cpp
@@ -6,15 +6,15 @@
 // Source Licenses. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++98, c++03
 
 // <vector>
 
 // vector()
 //        noexcept(is_nothrow_default_constructible<allocator_type>::value);
 
-// This tests a conforming extension
+// This *was* a conforming extension, but it was adopted in N4258.
 
-// UNSUPPORTED: c++98, c++03
 
 #include <vector>
 #include <cassert>