I first encountered such bug way back in 1996 time frame. When I tested embedded system nonestop for ~25 days and system has issue. It is counter wrap around

I first encountered such bug way back in 1996 time frame. When I tested embedded system nonestop for ~25 days and system has issue. It is counter wrap around time for 2^31 if counting once every millisecond. From that point on, I make sure test cover counter wrap around in 2^31, 2^32 etc. Until one day, someone told me the system I worked on, deploy in Comcast data center has issue after ~250 days...... I used hearing news about Newton, Win98, 777 etc has issue after 25 days, 49 days, etc. It is very easy to guess what the potential issues were.