a5bb0a3a45
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]
82 lines
2.1 KiB
Rust
82 lines
2.1 KiB
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.
|
|
|
|
// Test sized-ness checking in substitution.
|
|
|
|
|
|
// Unbounded.
|
|
fn f1<type X>(x: &X) {
|
|
f2::<X>(x); //~ ERROR instantiating a type parameter with an incompatible type `X`, which does n
|
|
}
|
|
fn f2<X>(x: &X) {
|
|
}
|
|
|
|
// Bounded.
|
|
trait T for type {}
|
|
fn f3<type X: T>(x: &X) {
|
|
f4::<X>(x); //~ ERROR instantiating a type parameter with an incompatible type `X`, which does n
|
|
}
|
|
fn f4<X: T>(x: &X) {
|
|
}
|
|
|
|
// Test with unsized enum.
|
|
enum E<type X> {
|
|
V(X),
|
|
}
|
|
|
|
fn f5<Y>(x: &Y) {}
|
|
fn f6<type X>(x: &X) {}
|
|
fn f7<type X>(x1: &E<X>, x2: &E<X>) {
|
|
f5(x1); //~ERROR instantiating a type parameter with an incompatible type `E<X>`, which does not
|
|
f6(x2); // ok
|
|
}
|
|
|
|
|
|
// Test with unsized struct.
|
|
struct S<type X> {
|
|
x: X,
|
|
}
|
|
|
|
fn f8<type X>(x1: &S<X>, x2: &S<X>) {
|
|
f5(x1); //~ERROR instantiating a type parameter with an incompatible type `S<X>`, which does not
|
|
f6(x2); // ok
|
|
}
|
|
|
|
// Test some tuples.
|
|
fn f9<type X>(x1: Box<S<X>>, x2: Box<E<X>>) {
|
|
f5(&(*x1, 34i)); //~ERROR instantiating a type parameter with an incompatible type `(S<X>,int)`,
|
|
f5(&(32i, *x2)); //~ERROR instantiating a type parameter with an incompatible type `(int,E<X>)`,
|
|
}
|
|
|
|
// I would like these to fail eventually.
|
|
/*
|
|
// impl - bounded
|
|
trait T1<Z: T> {
|
|
}
|
|
struct S3<type Y>;
|
|
impl<type X: T> T1<X> for S3<X> { //ERROR instantiating a type parameter with an incompatible type
|
|
}
|
|
|
|
// impl - unbounded
|
|
trait T2<Z> {
|
|
}
|
|
impl<type X> T2<X> for S3<X> { //ERROR instantiating a type parameter with an incompatible type `X`
|
|
|
|
// impl - struct
|
|
trait T3<type Z> {
|
|
}
|
|
struct S4<Y>;
|
|
impl<type X> T3<X> for S4<X> { //ERROR instantiating a type parameter with an incompatible type `X`
|
|
}
|
|
*/
|
|
|
|
pub fn main() {
|
|
}
|