mirror of https://github.com/rust-lang/rust
49 lines
1.7 KiB
Rust
49 lines
1.7 KiB
Rust
//@ compile-flags: --force-warn while_true
|
|
//@ compile-flags: --force-warn unused_variables
|
|
//@ compile-flags: --force-warn unused_mut
|
|
//@ check-pass
|
|
|
|
#![feature(lint_reasons)]
|
|
|
|
fn expect_early_pass_lint() {
|
|
#[expect(while_true)]
|
|
while true {
|
|
//~^ WARNING denote infinite loops with `loop { ... }` [while_true]
|
|
//~| NOTE requested on the command line with `--force-warn while-true`
|
|
//~| HELP use `loop`
|
|
println!("I never stop")
|
|
}
|
|
}
|
|
|
|
#[expect(unused_variables, reason="<this should fail and display this reason>")]
|
|
fn check_specific_lint() {
|
|
let x = 2;
|
|
//~^ WARNING unused variable: `x` [unused_variables]
|
|
//~| NOTE requested on the command line with `--force-warn unused-variables`
|
|
//~| HELP if this is intentional, prefix it with an underscore
|
|
}
|
|
|
|
#[expect(unused)]
|
|
fn check_multiple_lints_with_lint_group() {
|
|
let fox_name = "Sir Nibbles";
|
|
//~^ WARNING unused variable: `fox_name` [unused_variables]
|
|
//~| HELP if this is intentional, prefix it with an underscore
|
|
|
|
let mut what_does_the_fox_say = "*ding* *deng* *dung*";
|
|
//~^ WARNING variable does not need to be mutable [unused_mut]
|
|
//~| NOTE requested on the command line with `--force-warn unused-mut`
|
|
//~| HELP remove this `mut`
|
|
|
|
println!("The fox says: {what_does_the_fox_say}");
|
|
}
|
|
|
|
#[allow(unused_variables)]
|
|
fn check_expect_overrides_allow_lint_level() {
|
|
#[expect(unused_variables)]
|
|
let this_should_fulfill_the_expectation = "The `#[allow]` has no power here";
|
|
//~^ WARNING unused variable: `this_should_fulfill_the_expectation` [unused_variables]
|
|
//~| HELP if this is intentional, prefix it with an underscore
|
|
}
|
|
|
|
fn main() {}
|