Comment by monocasa
4 years ago
They still share an address space until exec replaces it for one of them. Particularly awful is that they share the same mutable stack which is a pathway that only leads to the inner circle of hell.
4 years ago
They still share an address space until exec replaces it for one of them. Particularly awful is that they share the same mutable stack which is a pathway that only leads to the inner circle of hell.
Assuming you call exec, of course. To not call exec after vfork is not an option; one of the many ways the fork family of functions are fundamentally broken.
Well, without undefined behavior you can also call _exit(), continue within the same function, and receive conforming signals. Unfortunately this isn't always spelled out and there's code out there that definitely does other work invoking undefined behavior.