mirror of https://github.com/rust-lang/rust
33 lines
957 B
Rust
33 lines
957 B
Rust
// Extern crate items are marked as used if they are used
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// through extern prelude entries introduced by them.
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//@ edition:2018
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#![deny(unused_extern_crates)]
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// Shouldn't suggest changing to `use`, as new name
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// would no longer be added to the prelude which could cause
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// compilation errors for imports that use the new name in
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// other modules. See #57672.
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extern crate core as iso1;
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extern crate core as iso2;
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extern crate core as iso3;
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extern crate core as iso4;
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// Doesn't introduce its extern prelude entry, so it's still considered unused.
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extern crate core; //~ ERROR unused extern crate
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mod m {
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use iso1::any as are_you_okay1;
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use ::iso2::any as are_you_okay2;
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type AreYouOkay1 = dyn iso3::any::Any;
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type AreYouOkay2 = dyn (::iso4::any::Any);
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use core::any as are_you_okay3;
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use ::core::any as are_you_okay4;
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type AreYouOkay3 = dyn core::any::Any;
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type AreYouOkay4 = dyn (::core::any::Any);
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}
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fn main() {}
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