36 lines
843 B
Rust
36 lines
843 B
Rust
// check-pass
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#![feature(stmt_expr_attributes)]
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#![warn(unused_attributes)] //~ NOTE lint level defined here
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fn main() {
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// fold_stmt (Item)
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#[allow(dead_code)]
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#[derive(Debug)] // should not warn
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struct Foo;
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// fold_stmt (Mac)
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#[derive(Debug)]
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//~^ WARN `#[derive]` does nothing on macro invocations
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//~| NOTE this may become a hard error in a future release
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println!("Hello, world!");
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// fold_stmt (Semi)
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#[derive(Debug)] //~ WARN unused attribute
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"Hello, world!";
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// fold_stmt (Local)
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#[derive(Debug)] //~ WARN unused attribute
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let _ = "Hello, world!";
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// visit_expr
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let _ = #[derive(Debug)] "Hello, world!";
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//~^ WARN unused attribute
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let _ = [
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// filter_map_expr
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#[derive(Debug)] //~ WARN unused attribute
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"Hello, world!"
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];
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}
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