#define err(format, arg...) do { } while (0)
#define info(format, arg...) do { } while (0)
#define dbg(format, arg...) do { } while (0)
#define err(format, arg...) do { } while (0)
#define info(format, arg...) do { } while (0)
#define dbg(format, arg...) do { } while (0)