rust/src/test/run-pass/loop-no-reinit-needed-post-bot.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

42 lines
1.1 KiB
Rust

// Copyright 2012-2014 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.
struct S;
// Ensure S is moved, not copied, on assignment.
impl Drop for S { fn drop(&mut self) { } }
// user-defined function "returning" bottom (i.e. no return at all).
fn my_fail() -> ! { loop {} }
pub fn step(f: bool) {
let mut g = S;
let mut i = 0i;
loop
{
if i > 10 { break; } else { i += 1; }
let _g = g;
if f {
// re-initialize g, but only before restarting loop.
g = S;
continue;
}
my_fail();
// we never get here, so we do not need to re-initialize g.
}
}
pub fn main() {
step(true);
}