diff --git a/examples/helloworld.cpp b/examples/helloworld.cpp
index e846c3f27..a4c2a289d 100644
--- a/examples/helloworld.cpp
+++ b/examples/helloworld.cpp
@@ -39,6 +39,11 @@ void draw_window(os::Window* window)
 
 int app_main(int argc, char* argv[])
 {
+  int test = 0;
+  if (test)
+    // comment
+    test = 1;
+
   os::SystemRef system = os::make_system();
   system->setAppMode(os::AppMode::GUI);