1 files changed, 31 insertions, 0 deletions
diff --git a/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/owner_before_shared_ptr.pass.cpp b/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/owner_before_shared_ptr.pass.cpp
new file mode 100644
index 000000000000..4aa49cfe8a24
--- /dev/null
+++ b/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/owner_before_shared_ptr.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>
+
+// weak_ptr
+
+// template<class U> bool owner_before(const shared_ptr<U>& b);
+
+#include <memory>
+#include <cassert>
+
+int main()
+{
+    const std::shared_ptr<int> p1(new int);
+    const std::shared_ptr<int> p2 = p1;
+    const std::shared_ptr<int> p3(new int);
+    const std::weak_ptr<int> w1(p1);
+    const std::weak_ptr<int> w2(p2);
+    const std::weak_ptr<int> w3(p3);
+    assert(!w1.owner_before(p2));
+    assert(!w2.owner_before(p1));
+    assert(w1.owner_before(p3) || w3.owner_before(p1));
+    assert(w3.owner_before(p1) == w3.owner_before(p2));
+}