rust/src/test/compile-fail/borrowck-anon-fields-tuple.rs
Patrick Walton a5bb0a3a45 librustc: Remove the fallback to int for integers and f64 for
floating point numbers for real.

This will break code that looks like:

    let mut x = 0;
    while ... {
        x += 1;
    }
    println!("{}", x);

Change that code to:

    let mut x = 0i;
    while ... {
        x += 1;
    }
    println!("{}", x);

Closes #15201.

[breaking-change]
2014-06-29 11:47:58 -07:00

46 lines
1023 B
Rust

// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// Tests that we are able to distinguish when loans borrow different
// anonymous fields of a tuple vs the same anonymous field.
fn distinct_variant() {
let mut y = (1i, 2i);
let a = match y {
(ref mut a, _) => a
};
let b = match y {
(_, ref mut b) => b
};
*a += 1;
*b += 1;
}
fn same_variant() {
let mut y = (1i, 2i);
let a = match y {
(ref mut a, _) => a
};
let b = match y {
(ref mut b, _) => b //~ ERROR cannot borrow
};
*a += 1;
*b += 1;
}
fn main() {
}