55 lines
1.0 KiB
Rust
55 lines
1.0 KiB
Rust
// Copyright 2012 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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#![feature(box_syntax)]
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// Issue #12470.
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trait X {
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fn get_i(&self) -> isize;
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}
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struct B {
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i: isize
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}
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impl X for B {
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fn get_i(&self) -> isize {
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self.i
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}
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}
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impl Drop for B {
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fn drop(&mut self) {
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println!("drop");
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}
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}
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struct A<'r> {
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p: &'r (X+'r)
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}
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fn make_a(p:&X) -> A {
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A{p:p}
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}
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fn make_make_a<'a>() -> A<'a> {
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let b: Box<B> = box B {
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i: 1,
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};
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let bb: &B = &*b; //~ ERROR `*b` does not live long enough
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make_a(bb)
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}
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fn main() {
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let a = make_make_a();
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println!("{}", a.p.get_i());
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}
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