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23 lines
705 B
Rust
23 lines
705 B
Rust
// Another regression test for #64477.
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//
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// In the past, the code generated by `format!` produced temporaries in the surrounding scope that
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// borrowed the arguments through `&dyn Trait`. These temporaries do not implement `Send`, which
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// meant that when `format!` was used in an async block, the resulting coroutine was not `Send`.
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// See https://github.com/rust-lang/rust/issues/64477#issuecomment-534669068 for details
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// and https://github.com/rust-lang/rust/issues/64477#issuecomment-531882958 for an example.
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//
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// check-pass
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// edition:2018
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async fn foo(_: String) {}
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fn bar() -> impl Send {
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async move {
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foo(format!("{}:{}", 1, 2)).await;
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}
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}
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fn main() {
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let _ = bar();
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}
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