rust/src/test/run-pass/argument-passing.rs
Patrick Walton 8114d0e950 librustc: Disallow multiple patterns from appearing in a "let" declaration.
You can still initialize multiple variables at once with "let (x, y) = (1, 2)".
2013-06-04 21:45:42 -07:00

36 lines
916 B
Rust

// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// xfail-fast
struct X {
x: int
}
fn f1(a: &mut X, b: &mut int, c: int) -> int {
let r = a.x + *b + c;
a.x = 0;
*b = 10;
return r;
}
fn f2(a: int, f: &fn(int)) -> int { f(1); return a; }
pub fn main() {
let mut a = X {x: 1};
let mut b = 2;
let mut c = 3;
assert_eq!(f1(&mut a, &mut b, c), 6);
assert_eq!(a.x, 0);
assert_eq!(b, 10);
assert_eq!(f2(a.x, |x| a.x = 50), 0);
assert_eq!(a.x, 50);
}