--- a/application/demo_states.c Wed Jul 22 21:21:24 2026 +0200 +++ b/application/demo_states.c Thu Jul 23 21:46:06 2026 +0200 @@ -28,6 +28,7 @@ #include "demo_states.h" +#include <stdio.h> #include <inttypes.h> static void *doc1;