mirror of https://github.com/rust-lang/rust.git
109 lines
2.5 KiB
Rust
109 lines
2.5 KiB
Rust
//@ aux-build:edition-2021-macros.rs
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//@ aux-build:edition-2024-macros.rs
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//@ compile-flags: -Z validate-mir -Zunstable-options
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//@ edition: 2024
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//@ run-pass
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#![feature(shorter_tail_lifetimes)]
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#![allow(unused_imports)]
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#![allow(dead_code)]
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#![allow(unused_variables)]
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#[macro_use]
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extern crate edition_2021_macros;
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#[macro_use]
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extern crate edition_2024_macros;
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use std::cell::RefCell;
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use std::convert::TryInto;
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#[derive(Default)]
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struct DropOrderCollector(RefCell<Vec<u32>>);
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struct LoudDrop<'a>(&'a DropOrderCollector, u32);
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impl Drop for LoudDrop<'_> {
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fn drop(&mut self) {
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println!("{}", self.1);
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self.0.0.borrow_mut().push(self.1);
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}
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}
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impl DropOrderCollector {
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fn option_loud_drop(&self, n: u32) -> Option<LoudDrop> {
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Some(LoudDrop(self, n))
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}
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fn loud_drop(&self, n: u32) -> LoudDrop {
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LoudDrop(self, n)
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}
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fn assert_sorted(&self, expected: usize) {
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let result = self.0.borrow();
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assert_eq!(result.len(), expected);
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for i in 1..result.len() {
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assert!(
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result[i - 1] < result[i],
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"inversion at {} ({} followed by {})",
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i - 1,
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result[i - 1],
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result[i]
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);
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}
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}
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}
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fn edition_2021_around_2021() {
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let c = DropOrderCollector::default();
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let _ = edition_2021_block! {
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let a = c.loud_drop(1);
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edition_2021_block! {
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let b = c.loud_drop(0);
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c.loud_drop(2).1
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}
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};
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c.assert_sorted(3);
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}
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fn edition_2021_around_2024() {
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let c = DropOrderCollector::default();
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let _ = edition_2021_block! {
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let a = c.loud_drop(2);
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edition_2024_block! {
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let b = c.loud_drop(1);
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c.loud_drop(0).1
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}
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};
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c.assert_sorted(3);
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}
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fn edition_2024_around_2021() {
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let c = DropOrderCollector::default();
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let _ = edition_2024_block! {
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let a = c.loud_drop(2);
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edition_2021_block! {
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let b = c.loud_drop(0);
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c.loud_drop(1).1
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}
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};
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c.assert_sorted(3);
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}
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fn edition_2024_around_2024() {
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let c = DropOrderCollector::default();
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let _ = edition_2024_block! {
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let a = c.loud_drop(2);
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edition_2024_block! {
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let b = c.loud_drop(1);
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c.loud_drop(0).1
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}
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};
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c.assert_sorted(3);
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}
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fn main() {
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edition_2021_around_2021();
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edition_2021_around_2024();
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edition_2024_around_2021();
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edition_2024_around_2024();
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}
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