The interviewer asking stuff like that is a good sign to leave immediately.
Maybe the interviewer seeks to hear something like "This is UD, this code needs to be rewritten, should not pass code review. What prevents you from using -Wall when compiling?"
alt Hacker News
Maybe the interviewer seeks to hear something like "This is UD, this code needs to be rewritten, should not pass code review. What prevents you from using -Wall when compiling?"