rust/tests/ui/unused-crate-deps/use_extern_crate_2015.rs

// Suppress by using crate

//@ edition:2015
//@ check-pass
//@ aux-crate:bar=bar.rs

#![warn(unused_crate_dependencies)]

extern crate bar;

fn main() {
    println!("bar {}", bar::BAR);
}
Implement warning for unused dependencies. This will print a diagnostic for crates which are mentioned as `--extern` arguments on the command line, but are never referenced from the source. This diagnostic is controlled by `-Wunused-crate-dependencies` or `#![warn(unused_crate_dependencies)]` and is "allow" by default. There are cases where certain crates need to be linked in but are not directly referenced - for example if they are providing symbols for C linkage. In this case the warning can be suppressed with `use needed_crate as _;`. Thanks to @petrochenkov for simplified core. Resolves issue #57274 2020-05-17 01:48:01 -07:00			`// Suppress by using crate`

[AUTO-GENERATED] Migrate ui tests from `//` to `//@` directives 2024-02-16 20:02:50 +00:00			`//@ edition:2015`
			`//@ check-pass`
			`//@ aux-crate:bar=bar.rs`
Implement warning for unused dependencies. This will print a diagnostic for crates which are mentioned as `--extern` arguments on the command line, but are never referenced from the source. This diagnostic is controlled by `-Wunused-crate-dependencies` or `#![warn(unused_crate_dependencies)]` and is "allow" by default. There are cases where certain crates need to be linked in but are not directly referenced - for example if they are providing symbols for C linkage. In this case the warning can be suppressed with `use needed_crate as _;`. Thanks to @petrochenkov for simplified core. Resolves issue #57274 2020-05-17 01:48:01 -07:00
			`#![warn(unused_crate_dependencies)]`

			`extern crate bar;`

			`fn main() {`
			`println!("bar {}", bar::BAR);`
			`}`