diff --git a/test/CFrontend/2007-10-02-VolatileArray.c b/test/CFrontend/2007-10-02-VolatileArray.c
new file mode 100644
index 0000000..7e8bf24
--- /dev/null
+++ b/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;
+}