You might not. Your dependencies do. And maybe you do in small amounts. You think you are gaining something by misusing sbrk(2), but you are leaving a timebo

You might not. Your dependencies do. And maybe you do in small amounts. You think you are gaining something by misusing sbrk(2), but you are leaving a timebomb in your code. By your writing it seems like you are smart enough to know this. From a performance perspective, it won't matter in large amounts if you put a stack on a high level heap or mmap its pages or use this silly sbrk(2) thing. You know this.