36 lines
1.1 KiB
Rust
36 lines
1.1 KiB
Rust
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// Copyright 2017 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(catch_expr)]
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pub fn main() {
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let _: Result<(), &str> = do catch {
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let my_string = String::from("");
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let my_str: &str = &my_string;
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Err(my_str)?;
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Err("")?;
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Ok(())
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}; //~ ERROR `my_string` does not live long enough
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let mut i = 5;
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let k = &mut i;
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let mut j: Result<(), &mut i32> = do catch {
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Err(k)?;
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i = 10; //~ ERROR cannot assign to `i` because it is borrowed
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Ok(())
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};
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::std::mem::drop(k); //~ ERROR use of moved value: `k`
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i = 40; //~ ERROR cannot assign to `i` because it is borrowed
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let i_ptr = if let Err(i_ptr) = j { i_ptr } else { panic!("") };
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*i_ptr = 50;
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}
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