1 files changed, 4 insertions, 0 deletions
diff --git a/init/init.c b/init/init.c
index a3e8d6700..980150ff5 100644
--- a/init/init.c
+++ b/init/init.c
@@ -538,3 +538,7 @@ extern int init_main(int argc, char **argv)
 	sleep(1);
     }
 }
+
+#if defined FOO
+    #error Ack!
+#endif