diff --git a/clang/test/SemaCXX/warn-c++11-extensions.cpp b/clang/test/SemaCXX/warn-c++11-extensions.cpp
new file mode 100644
index 000000000000..8f351711195e
--- /dev/null
+++ b/clang/test/SemaCXX/warn-c++11-extensions.cpp
@@ -0,0 +1,7 @@
+// RUN: %clang_cc1 -fsyntax-only -std=c++98 -Wc++11-extensions -verify %s
+
+long long ll1 = // expected-warning {{'long long' is a C++11 extension}}
+         -42LL; // expected-warning {{'long long' is a C++11 extension}}
+unsigned long long ull1 = // expected-warning {{'long long' is a C++11 extension}}
+                   42ULL; // expected-warning {{'long long' is a C++11 extension}}
+