//ww:run
package main;
type thread = struct { pc: size, matched: bool };
fn setpc(ts: *[]thread, i: size) void = {
	(*ts)[i].pc = 9;
};
fn bump(ts: *[]thread, i: size) void = {
	(*ts)[i].pc += 1;
};
fn markm(ts: *[]thread, i: size) void = {
	(*ts)[i].matched = true;
};
export fn main() i32 = {
	let ts: []thread = [];
	append(ts, thread { pc = 7, matched = false });
	setpc(&ts, 0);
	if (ts[0].pc != 9) { return 1; };
	bump(&ts, 0);
	if (ts[0].pc != 10) { return 2; };
	markm(&ts, 0);
	if (!ts[0].matched) { return 3; };
	return 0;
};