On: Confess HN: Share your Immoral Hacks, Codes or Twe...

[tome]

I don't get it. Why not just remove the exit() and have the function return to where it was called, as standard?

[parenthesis → tome]

Because, presumably, the program wasn't written as one big main() function, and at least one of the exit()s wasn't in main() — hence the use of longjmp() to jump out of all the layers of function calls back to the caller of the `library'.