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fn f1(a: {mut x: int}, &b: int, -c: int) -> int {
let r = a.x + b + c;
a.x = 0;
b = 10;
c = 20;
ret r;
}
fn f2(a: int, f: fn(int)) -> int { f(1); ret a; }
fn main() {
let mut a = {mut x: 1}, b = 2, c = 3;
assert (f1(a, b, c) == 6);
assert (a.x == 0);
assert (b == 10);
assert (f2(a.x, {|x| a.x = 50; }) == 0);
assert (a.x == 50);
}
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