de70d76373
except where trait objects are involved. Part of issue #15349, though I'm leaving it open for trait objects. Cross borrowing for trait objects remains because it is needed until we have DST. This will break code like: fn foo(x: &int) { ... } let a = box 3i; foo(a); Change this code to: fn foo(x: &int) { ... } let a = box 3i; foo(&*a); [breaking-change]
43 lines
869 B
Rust
43 lines
869 B
Rust
// Copyright 2012-2014 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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trait X {
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fn get_i(&self) -> int;
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}
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struct B {
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i: int
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}
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impl X for B {
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fn get_i(&self) -> int {
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self.i
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}
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}
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struct A<'a> {
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p: &'a X
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}
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fn make_a<'a>(p: &'a X) -> A<'a> {
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A { p: p }
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}
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fn make_make_a() -> A {
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let b: Box<B> = box B {i:1};
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let bb: &B = &*b; //~ ERROR 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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}
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