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// 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() {}
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