sync with N3126

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@113100 91177308-0d34-0410-b5e6-96231b3b80d8

test/utilities/allocator.adaptor/allocator.adaptor.cnstr/default.pass.cpp

@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// scoped_allocator_adaptor();
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "../allocators.h"
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a;
+        assert(a.outer_allocator() == A1<int>());
+        assert(a.inner_allocator() == a);
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == false);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a;
+        assert(a.outer_allocator() == A1<int>());
+        assert(a.inner_allocator() == std::scoped_allocator_adaptor<A2<int>>());
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == false);
+        assert(A2<int>::copy_called == false);
+        assert(A2<int>::move_called == false);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a;
+        assert(a.outer_allocator() == A1<int>());
+        assert((a.inner_allocator() == std::scoped_allocator_adaptor<A2<int>, A3<int>>()));
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == false);
+        assert(A2<int>::copy_called == false);
+        assert(A2<int>::move_called == false);
+        assert(A3<int>::copy_called == false);
+        assert(A3<int>::move_called == false);
+    }
+
+#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
+}