diff --git a/llvm/test/CFrontend/2007-10-02-VolatileArray.c b/llvm/test/CFrontend/2007-10-02-VolatileArray.c
new file mode 100644
index 000000000000..7e8bf24a84b8
--- /dev/null
+++ b/llvm/test/CFrontend/2007-10-02-VolatileArray.c
@@ -0,0 +1,7 @@
+// RUN: %llvmgcc -S %s -o - | grep volatile
+// PR1647
+
+void foo(volatile int *p)
+{
+p[0] = 0;
+}