1 files changed, 47 insertions, 0 deletions
diff --git a/test/std/utilities/memory/unique.ptr/unique.ptr.runtime/unique.ptr.runtime.observers/index.pass.cpp b/test/std/utilities/memory/unique.ptr/unique.ptr.runtime/unique.ptr.runtime.observers/index.pass.cpp
new file mode 100644
index 0000000000000..519eae688ec1b
--- /dev/null
+++ b/test/std/utilities/memory/unique.ptr/unique.ptr.runtime/unique.ptr.runtime.observers/index.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test op[](size_t)
+
+#include <memory>
+#include <cassert>
+
+class A
+{
+    int state_;
+    static int next_;
+public:
+    A() : state_(++next_) {}
+    int get() const {return state_;}
+
+    friend bool operator==(const A& x, int y)
+        {return x.state_ == y;}
+
+    A& operator=(int i) {state_ = i; return *this;}
+};
+
+int A::next_ = 0;
+
+int main()
+{
+    std::unique_ptr<A[]> p(new A[3]);
+    assert(p[0] == 1);
+    assert(p[1] == 2);
+    assert(p[2] == 3);
+    p[0] = 3;
+    p[1] = 2;
+    p[2] = 1;
+    assert(p[0] == 3);
+    assert(p[1] == 2);
+    assert(p[2] == 1);
+}