sync with N3126

llvm-svn: 113101

1 files changed, 27 insertions, 0 deletions

diff --git a/libcxx/test/containers/container.adaptors/stack/stack.defn/top_const.pass.cpp b/libcxx/test/containers/container.adaptors/stack/stack.defn/top_const.pass.cpp
new file mode 100644
index 00000000000..e86e6c8119c
--- /dev/null
+++ b/libcxx/test/containers/container.adaptors/stack/stack.defn/top_const.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// const_reference top() const;
+
+#include <stack>
+#include <cassert>
+
+int main()
+{
+    std::stack<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    q.push(3);
+    const std::stack<int>& cqr = q;
+    const int& cir = cqr.top();
+    assert(cir == 3);
+}