18 lines
485 B
Rust
18 lines
485 B
Rust
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#![feature(generator_trait)]
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#![feature(generators)]
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#![deny(unused_braces, unused_parens)]
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use std::ops::Generator;
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use std::pin::Pin;
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fn main() {
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let mut x = |_| {
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while let Some(_) = (yield) {}
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while let Some(_) = {yield} {}
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// Only warn these cases
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while let Some(_) = ({yield}) {} //~ ERROR: unnecessary parentheses
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while let Some(_) = {(yield)} {} //~ ERROR: unnecessary braces
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};
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let _ = Pin::new(&mut x).resume(Some(5));
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}
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