WHF :) On the most recent main branch (commit 9c52bee6) I tried to compile the following progam:

struct LinkedList {
    value: i64
    next: LinkedList?
}

function main() {
    mut node1 = LinkedList(value: 1, next: None)
}

and the compiler (not the resulting program) crashed with a Segmentation Fault.|

Steps I took:

cargo install --path .
jakt ./selfhost/main.jakt && mv ./build/main ./jakt_selfhost
./jakt_selfhost test.jakt # test.jakt is the program shown above

The Rust-based compiler doesn't crash and produces some Cpp which clang then rejects with
error: invalid application of 'sizeof' to an incomplete type 'Jakt::LinkedList'