Field Lifetime of Heap-Allocated Struct

[amesaine]

Correct me if I’m wrong, .left = Node{ .atom = 0 } here has a static lifetime so problem solved.

Diving deep into anonymous struct literals

Anonymous struct literals are widely used throughout Zig stdlib, especially implementing vtable in all allocators. Documentation, unfortunately, has a lot to be desired and this thread carries over and expands the conversation that started in another thread that became too long. Some fundamental questions first: Where do &.{...} live? On stack, in heap, in data or text segment? How long do they live? Local, static? If I instantiate the same anonymous struct literal twice, do I get two distinc…

Here’s the declaration.

const Node = union(enum) {
    atom: u8,
    cons: struct {
        op: u8,
        left: *const Node,
        right: *const Node,
    },
}