When the genie says "no wishing for more wishes," every programmer knows there's a workaround. This dev just exploited the classic integer overflow vulnerability! By storing wishes in an unsigned 32-bit integer (max value: 4,294,967,295) and then cleverly manipulating the order of operations, they've essentially created an infinite wish glitch.
The coup de grâce? Wishing for 0 wishes. Since the subtraction happens after the wish is granted, they'll still have 4,294,967,295 wishes left. The genie's face says it all - outsmarted by someone who clearly debugs race conditions for a living.
And this, friends, is why you always validate your inputs and use proper synchronization primitives. Otherwise some smartass in a code review will point out how your entire wish-granting API can be exploited.