mirror of https://github.com/rust-lang/rust
25 lines
546 B
Rust
25 lines
546 B
Rust
//@ revisions: imported unimported
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//@[imported] check-pass
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mod private {
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pub trait Future {
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//[unimported]~^^ HELP perhaps add a `use` for it
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fn wait(&self) where Self: Sized;
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}
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impl Future for Box<dyn Future> {
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fn wait(&self) { }
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}
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}
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#[cfg(imported)]
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use private::Future;
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fn bar(arg: Box<dyn private::Future>) {
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// Importing the trait means that we don't autoderef `Box<dyn Future>`
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arg.wait();
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//[unimported]~^ ERROR the `wait` method cannot be invoked on a trait object
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}
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fn main() {}
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