struct S {
a : array<vec4<i32>, 4>,
}
var<private> counter : i32;
fn foo() -> i32 {
counter += 1;
return counter;
fn bar() -> i32 {
counter += 2;
fn main() {
var x = S();
let p = &(x);
(*(p)).a[foo()][bar()] += 5;