//ww:run-exit 52
package main;
type capture = struct { content: str, start: size, end: size };
type t = struct { pc: size, cap: capture };
fn setcap(ts: *[]t, i: size) void = {
	(*ts)[i].cap = capture { content = "hit", start = 2, end = 4 };
};
fn clearcap(ts: *[]t, i: size) void = {
	(*ts)[i].cap = capture { content = "z", ... };
};
export fn main() i32 = {
	let z: capture = capture { content = "", start = 0, end = 0 };
	let ts: []t = [];
	append(ts, t { pc = 7, cap = z });
	append(ts, t { pc = 8, cap = z });
	setcap(&ts, 1);
	if (ts[1].cap.content.len != 3) { return 1; };
	if (ts[1].cap.start != 2) { return 2; };
	if (ts[1].cap.end != 4) { return 3; };
	if (ts[1].pc != 8) { return 4; };
	if (ts[0].cap.content.len != 0) { return 5; };
	if (ts[0].pc != 7) { return 6; };
	clearcap(&ts, 1);
	if (ts[1].cap.content.len != 1) { return 7; };
	if (ts[1].cap.start != 0) { return 8; };
	if (ts[1].cap.end != 0) { return 9; };
	return 52;
};