43 lines
1.1 KiB
Rust
43 lines
1.1 KiB
Rust
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// check-pass
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#![feature(lint_reasons)]
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#![warn(unused_variables)]
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macro_rules! trigger_unused_variables_macro {
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() => {
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let x = 0;
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//~^ WARNING unused variable: `x` [unused_variables]
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//~| WARNING unused variable: `x` [unused_variables]
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};
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}
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pub fn check_macro() {
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// This should trigger the `unused_variables` from inside the macro
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trigger_unused_variables_macro!();
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}
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// This should be fulfilled by the macro
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#[expect(unused_variables)]
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pub fn check_expect_on_item() {
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trigger_unused_variables_macro!();
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}
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pub fn check_expect_on_macro() {
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// This should be fulfilled by the macro
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#[expect(unused_variables)]
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trigger_unused_variables_macro!();
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// FIXME: Lint attributes currently don't work directly on macros, and
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// therefore also doesn't work for the new `expect` attribute. This bug
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// is being tracked in rust#87391. The test will until then produce two
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// warnings about the unused variable x.
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//
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// The expectation is still marked as fulfilled. I'm not totally why but
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// my guess is that this will remain working when rust#87391 has been fixed.
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}
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fn main() {
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}
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