16 lines
364 B
Rust
16 lines
364 B
Rust
//@ edition:2021
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// FIXME(async_closures): This needs a better error message!
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#![feature(async_closure)]
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fn main() {
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fn needs_async_fn(_: impl async Fn()) {}
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let mut x = 1;
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needs_async_fn(async || {
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//~^ ERROR expected a closure that implements the `async Fn` trait, but this closure only implements `async FnMut`
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x += 1;
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});
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}
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