User with this age already exists

https://feddit.de/post/3932146

User with this age already exists - Feddit

New Bug

xkcd
Well I just got a great idea for next time I need to change a password.
When you pick the wrong column for your primary key.
I use dark mode for a reason. FU.
Enter NaN. Or else your age is just a number.
What happens when a user grows a year older?
Every other user will also have grown a year older, so it will be fine.
Not at the same time!

thatsthejoke.gif

I think, anyway.

We will have to synchronize everyone’s birthday, yes.

Luckily, 40% of our users were born on January 1, anyway.

A newborn user can register?
Incredibly exclusive userbase, less than 100 users ever at any one time.
If I encountered a system that badly designed, I would check to see if it takes non-integer ages and maybe get in that way.
Why stop there? How about a lil’ white hat hacking with SQL injection :)
bob’; DROP TABLE users;
Failing that, there’s also unreasonably large numbers and negative numbers.
I’m 65535 years old, and you can’t prove otherwise!
Only neanderthal kids will remember.
…and don’t forget the matches…