mirror of https://github.com/rust-lang/rust
42 lines
901 B
Rust
42 lines
901 B
Rust
// This test ensures that no suggestion is emitted if the span originates from
|
|
// an expansion that is probably not under a user's control.
|
|
|
|
//@ edition:2021
|
|
//@ compile-flags: -Z unstable-options
|
|
|
|
#![feature(if_let_rescope)]
|
|
#![deny(if_let_rescope)]
|
|
#![allow(irrefutable_let_patterns)]
|
|
|
|
macro_rules! edition_2021_if_let {
|
|
($p:pat, $e:expr, { $($conseq:tt)* } { $($alt:tt)* }) => {
|
|
if let $p = $e { $($conseq)* } else { $($alt)* }
|
|
//~^ ERROR `if let` assigns a shorter lifetime since Edition 2024
|
|
//~| WARN this changes meaning in Rust 2024
|
|
}
|
|
}
|
|
|
|
fn droppy() -> Droppy {
|
|
Droppy
|
|
}
|
|
struct Droppy;
|
|
impl Drop for Droppy {
|
|
fn drop(&mut self) {
|
|
println!("dropped");
|
|
}
|
|
}
|
|
impl Droppy {
|
|
fn get(&self) -> Option<u8> {
|
|
None
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
edition_2021_if_let! {
|
|
Some(_value),
|
|
droppy().get(),
|
|
{}
|
|
{}
|
|
};
|
|
}
|