1 files changed, 26 insertions, 0 deletions
diff --git a/test/libcxx/containers/gnu_cxx/hash_set.pass.cpp b/test/libcxx/containers/gnu_cxx/hash_set.pass.cpp
new file mode 100644
index 000000000000..5fd4bde66e0a
--- /dev/null
+++ b/test/libcxx/containers/gnu_cxx/hash_set.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// Prevent emission of the deprecated warning.
+#ifdef __clang__
+#pragma clang diagnostic ignored "-W#warnings"
+#endif
+
+#include <ext/hash_set>
+
+namespace __gnu_cxx {
+template class hash_set<int>;
+}
+
+int main() {
+  typedef __gnu_cxx::hash_set<int> Set;
+  Set s;
+  Set s2(s);
+  ((void)s2);
+}