diff --git a/testcode/compiler/pptest5.c b/testcode/compiler/pptest5.c
new file mode 100644
index 000000000..7dd075e6e
--- /dev/null
+++ b/testcode/compiler/pptest5.c
@@ -0,0 +1,3 @@
+#define t(x,y,z) x ## y ## z 
+int j[] = { t(1,2,3), t(,4,5), t(6,,7), t(8,9,),
+	    t(10,,), t(,11,), t(,,12), t(,,) };