> When i create a new thread, i expect its stack to be allocated before the break Why? Stacks are just memory like any other. You can put them wherever you wan

> When i create a new thread, i expect its stack to be allocated before the break Why? Stacks are just memory like any other. You can put them wherever you want. > so the jvm could have to request to move the break and grow the heap The JVM allocates heap space using mmap, not by moving the break. > you can receive a further OOME while handling an exception and that’s just bad luck If you're being reasonable you don't - the JVM maintains emergency heap storage (pre-committed!) space so it can keep allocating even when out-of-memory.