1 files changed, 17 insertions, 0 deletions
diff --git a/test/libcxx/extensions/hash/specializations.fail.cpp b/test/libcxx/extensions/hash/specializations.fail.cpp
new file mode 100644
index 0000000000000..8eeffb5802e72
--- /dev/null
+++ b/test/libcxx/extensions/hash/specializations.fail.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+#include <assert.h>
+#include <ext/hash_map>
+#include <string>
+
+int main()
+{
+    assert(__gnu_cxx::hash<std::string>()(std::string()) == 0);  // error
+}