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PR 138515, we insert a placeholder attribute so that checks for attributes can still know about the placement of `cfg` attributes. When we suggest removing items with `cfg_attr`s (fix Issue 56328) and make them verbose. We tweak the wording of the existing "unused `extern crate`" lint. ``` warning: unused extern crate --> $DIR/removing-extern-crate.rs:9:1 | LL | extern crate removing_extern_crate as foo; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unused | note: the lint level is defined here --> $DIR/removing-extern-crate.rs:6:9 | LL | #![warn(rust_2018_idioms)] | ^^^^^^^^^^^^^^^^ = note: `#[warn(unused_extern_crates)]` implied by `#[warn(rust_2018_idioms)]` help: remove the unused `extern crate` | LL - #[cfg_attr(test, macro_use)] LL - extern crate removing_extern_crate as foo; LL + | ```
18 lines
486 B
Rust
18 lines
486 B
Rust
//@ edition:2018
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//@ aux-build:../removing-extern-crate.rs
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//@ run-rustfix
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#![warn(rust_2018_idioms)]
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#[cfg_attr(test, "macro_use")] //~ ERROR expected
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extern crate removing_extern_crate as foo; //~ WARNING unused extern crate
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extern crate core; //~ WARNING unused extern crate
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mod another {
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#[cfg_attr(test)] //~ ERROR expected
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extern crate removing_extern_crate as foo; //~ WARNING unused extern crate
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extern crate core; //~ WARNING unused extern crate
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}
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fn main() {}
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