mirror of https://github.com/rust-lang/rust.git
24 lines
530 B
Rust
24 lines
530 B
Rust
//@ edition: 2021
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#![feature(async_fn_in_dyn_trait)]
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//~^ WARN the feature `async_fn_in_dyn_trait` is incomplete
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use std::future::Future;
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trait AsyncTrait {
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async fn async_dispatch(&self);
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}
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impl AsyncTrait for &'static str {
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fn async_dispatch(&self) -> impl Future<Output = ()> {
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async move {
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// The implementor must box the future...
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}
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}
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}
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fn main() {
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let x: &dyn AsyncTrait = &"hello, world!";
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//~^ ERROR `impl Future<Output = ()>` needs to have the same ABI as a pointer
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}
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