diff --git a/test/CodeGen/2008-08-04-void-pointer-arithmetic.c b/test/CodeGen/2008-08-04-void-pointer-arithmetic.c
new file mode 100644
index 0000000..dbfc107
--- /dev/null
+++ b/test/CodeGen/2008-08-04-void-pointer-arithmetic.c
@@ -0,0 +1,6 @@
+// RUN: %clang_cc1 -emit-llvm -o - %s
+// <rdar://problem/6122967>
+
+int f0(void *a, void *b) {
+  return a - b;
+}