68ead460f9
referenced by boxes. This is done by creating a shim function that handles the cleanup of the box properly. Closes #10672.
78 lines
1.4 KiB
Rust
78 lines
1.4 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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static mut destructor_count: uint = 0;
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trait Foo {
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fn foo(self, x: int);
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}
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struct S {
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x: int,
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y: int,
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z: int,
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s: String,
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}
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impl Foo for S {
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fn foo(self, x: int) {
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assert!(self.x == 2);
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assert!(self.y == 3);
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assert!(self.z == 4);
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assert!(self.s.as_slice() == "hello");
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assert!(x == 5);
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}
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}
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impl Drop for S {
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fn drop(&mut self) {
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println!("bye 1!");
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unsafe {
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destructor_count += 1;
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}
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}
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}
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impl Foo for int {
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fn foo(self, x: int) {
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println!("{}", x * x);
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}
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}
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fn f() {
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let s = S {
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x: 2,
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y: 3,
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z: 4,
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s: "hello".to_string(),
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};
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let st = box s as Box<Foo>;
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st.foo(5);
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println!("bye 2!");
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}
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fn g() {
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let s = 2i;
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let st = box s as Box<Foo>;
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st.foo(3);
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println!("bye 3!");
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}
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fn main() {
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f();
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unsafe {
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assert!(destructor_count == 1);
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}
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g();
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}
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