rust/src/test/run-pass/issue-14308.rs
Niko Matsakis 9e3d0b002a librustc: Remove the fallback to int from typechecking.
This breaks a fair amount of code. The typical patterns are:

* `for _ in range(0, 10)`: change to `for _ in range(0u, 10)`;

* `println!("{}", 3)`: change to `println!("{}", 3i)`;

* `[1, 2, 3].len()`: change to `[1i, 2, 3].len()`.

RFC #30. Closes #6023.

[breaking-change]
2014-06-24 17:18:48 -07:00

33 lines
962 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.
struct A(int);
struct B;
fn main() {
let x = match A(3) {
A(..) => 1i
};
assert_eq!(x, 1);
let x = match A(4) {
A(1) => 1i,
A(..) => 2i
};
assert_eq!(x, 2);
// This next test uses a (..) wildcard match on a nullary struct.
// There's no particularly good reason to support this, but it's currently allowed,
// and this makes sure it doesn't ICE or break LLVM.
let x = match B {
B(..) => 3i
};
assert_eq!(x, 3);
}