b53454e2e4
This commit moves reflection (as well as the {:?} format modifier) to a new
libdebug crate, all of which is marked experimental.
This is a breaking change because it now requires the debug crate to be
explicitly linked if the :? format qualifier is used. This means that any code
using this feature will have to add `extern crate debug;` to the top of the
crate. Any code relying on reflection will also need to do this.
Closes #12019
[breaking-change]
37 lines
901 B
Rust
37 lines
901 B
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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extern crate debug;
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struct defer<'a> {
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x: &'a [&'a str],
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}
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#[unsafe_destructor]
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impl<'a> Drop for defer<'a> {
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fn drop(&mut self) {
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unsafe {
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println!("{:?}", self.x);
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}
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}
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}
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fn defer<'r>(x: &'r [&'r str]) -> defer<'r> {
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defer {
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x: x
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}
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}
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fn main() {
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let x = defer(vec!("Goodbye", "world!").as_slice());
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//~^ ERROR borrowed value does not live long enough
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x.x[0];
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}
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