mirror of https://github.com/rust-lang/rust
72 lines
2.5 KiB
Rust
72 lines
2.5 KiB
Rust
//@ run-rustfix
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#![deny(if_let_rescope)]
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#![feature(if_let_rescope)]
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#![allow(irrefutable_let_patterns)]
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fn droppy() -> Droppy {
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Droppy
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}
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struct Droppy;
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impl Drop for Droppy {
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fn drop(&mut self) {
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println!("dropped");
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}
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}
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impl Droppy {
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fn get(&self) -> Option<u8> {
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None
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}
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}
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fn main() {
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if let Some(_value) = droppy().get() {
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// Should not lint
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}
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match droppy().get() { Some(_value) => {
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//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
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//~| WARN: this changes meaning in Rust 2024
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//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
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// do something
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} _ => {
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//~^ HELP: the value is now dropped here in Edition 2024
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// do something else
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}}
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match droppy().get() { Some(_value) => {
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//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
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//~| WARN: this changes meaning in Rust 2024
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//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
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// do something
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} _ => { match droppy().get() { Some(_value) => {
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//~^ HELP: the value is now dropped here in Edition 2024
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// do something else
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} _ => {}}}}
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//~^ HELP: the value is now dropped here in Edition 2024
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if droppy().get().is_some() {
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// Should not lint
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} else { match droppy().get() { Some(_value) => {
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//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
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//~| WARN: this changes meaning in Rust 2024
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//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
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} _ => if droppy().get().is_none() {
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//~^ HELP: the value is now dropped here in Edition 2024
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}}}
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if let Some(1) = { match Droppy.get() { Some(_value) => { Some(1) } _ => { None }} } {
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//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
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//~| WARN: this changes meaning in Rust 2024
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//~| HELP: the value is now dropped here in Edition 2024
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//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
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}
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if let () = { match Droppy.get() { Some(_value) => {} _ => {}} } {
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//~^ ERROR: `if let` assigns a shorter lifetime since Edition 2024
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//~| WARN: this changes meaning in Rust 2024
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//~| HELP: the value is now dropped here in Edition 2024
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//~| HELP: a `match` with a single arm can preserve the drop order up to Edition 2021
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}
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}
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