mirror of https://github.com/rust-lang/rust.git
17 lines
446 B
Rust
17 lines
446 B
Rust
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//@ revisions: edition2021 edition2024
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//@ [edition2021] edition: 2021
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//@ [edition2024] edition: 2024
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//@ [edition2024] compile-flags: -Zunstable-options
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//@ [edition2024] check-pass
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#![cfg_attr(edition2024, feature(shorter_tail_lifetimes))]
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fn main() {
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let cell = std::cell::RefCell::new(0u8);
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if let Ok(mut byte) = cell.try_borrow_mut() {
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//[edition2021]~^ ERROR: `cell` does not live long enough
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*byte = 1;
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}
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}
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