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|
//@ run-rustfix
#![deny(if_let_rescope)]
#![feature(stmt_expr_attributes)]
#![allow(irrefutable_let_patterns, unused_parens)]
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() {
if let Some(_value) = droppy().get() {
// Should not lint
}
match droppy().get() { Some(_value) => {
//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
//~| WARN: this changes meaning in Rust 2024
//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
// do something
} _ => {
//~^ HELP: the value is now dropped here in Edition 2024
// do something else
}}
match droppy().get() { Some(_value) => {
//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
//~| WARN: this changes meaning in Rust 2024
//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
// do something
} _ => { match droppy().get() { Some(_value) => {
//~^ HELP: the value is now dropped here in Edition 2024
// do something else
} _ => {}}}}
//~^ HELP: the value is now dropped here in Edition 2024
if droppy().get().is_some() {
// Should not lint
} else { match droppy().get() { Some(_value) => {
//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
//~| WARN: this changes meaning in Rust 2024
//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
} _ => if droppy().get().is_none() {
//~^ HELP: the value is now dropped here in Edition 2024
}}}
if let Some(1) = { match Droppy.get() { Some(_value) => { Some(1) } _ => { None }} } {
//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
//~| WARN: this changes meaning in Rust 2024
//~| HELP: the value is now dropped here in Edition 2024
//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
}
if let () = { match Droppy.get() { Some(_value) => {} _ => {}} } {
//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
//~| WARN: this changes meaning in Rust 2024
//~| HELP: the value is now dropped here in Edition 2024
//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
}
#[rustfmt::skip]
if (match droppy().get() { Some(_value) => { true } _ => { false }}) {
//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
//~| WARN: this changes meaning in Rust 2024
//~| HELP: the value is now dropped here in Edition 2024
//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
// do something
} else if (((match droppy().get() { Some(_value) => { true } _ => { false }}))) {
//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
//~| WARN: this changes meaning in Rust 2024
//~| HELP: the value is now dropped here in Edition 2024
//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
}
while let Some(_value) = droppy().get() {
// Should not lint
break;
}
while (match droppy().get() { Some(_value) => { false } _ => { true }}) {
//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
//~| WARN: this changes meaning in Rust 2024
//~| HELP: the value is now dropped here in Edition 2024
//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
}
}
|
