- msg_Err( p_this, "invalid button state %s for button %s expected %d: unselect, select or pressed)",
- &state[0], &action[0], strlen(&state[0]));
+ msg_Err( p_this, "invalid button state %s for button %s "
+ "expected %u: unselect, select or pressed)",
+ &state[0], &action[0], (unsigned)strlen(&state[0]));