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//@ run-rustfix
//@ edition:2018
//@ check-pass
#![warn(rust_2021_prelude_collisions)]
#![allow(dead_code)]
#![allow(unused_imports)]
mod m {
pub trait TryIntoU32 {
fn try_into(self) -> Result<u32, ()>;
}
impl TryIntoU32 for u8 {
fn try_into(self) -> Result<u32, ()> {
Ok(self as u32)
}
}
pub trait AnotherTrick {}
}
mod a {
use crate::m::TryIntoU32;
fn main() {
// In this case, we can just use `TryIntoU32`
let _: u32 = TryIntoU32::try_into(3u8).unwrap();
//~^ WARNING trait method `try_into` will become ambiguous in Rust 2021
//~^^ WARNING this is accepted in the current edition
}
}
mod b {
use crate::m::AnotherTrick as TryIntoU32;
use crate::m::TryIntoU32 as _;
fn main() {
// In this case, a `TryIntoU32::try_into` rewrite will not work, and we need to use
// the path `crate::m::TryIntoU32` (with which it was imported).
let _: u32 = crate::m::TryIntoU32::try_into(3u8).unwrap();
//~^ WARNING trait method `try_into` will become ambiguous in Rust 2021
//~^^ WARNING this is accepted in the current edition
}
}
mod c {
use super::m::TryIntoU32 as _;
use crate::m::AnotherTrick as TryIntoU32;
fn main() {
// In this case, a `TryIntoU32::try_into` rewrite will not work, and we need to use
// the path `super::m::TryIntoU32` (with which it was imported).
let _: u32 = super::m::TryIntoU32::try_into(3u8).unwrap();
//~^ WARNING trait method `try_into` will become ambiguous in Rust 2021
//~^^ WARNING this is accepted in the current edition
}
}
mod d {
use super::m::*;
fn main() {
// See https://github.com/rust-lang/rust/issues/88471
let _: u32 = TryIntoU32::try_into(3u8).unwrap();
//~^ WARNING trait method `try_into` will become ambiguous in Rust 2021
//~^^ WARNING this is accepted in the current edition
}
}
fn main() {}
|
