18 lines
593 B
Rust
18 lines
593 B
Rust
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//@ revisions: allow not_allow
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//@ compile-flags: --crate-type=lib -Cinstrument-coverage -Zno-profiler-runtime
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//@[allow] check-pass
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#![feature(staged_api, rustc_allow_const_fn_unstable)]
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#![stable(feature = "rust_test", since = "1.0.0")]
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#[stable(feature = "rust_test", since = "1.0.0")]
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#[rustc_const_stable(feature = "rust_test", since = "1.0.0")]
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#[cfg_attr(allow, rustc_allow_const_fn_unstable(const_precise_live_drops))]
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pub const fn unwrap<T>(this: Option<T>) -> T {
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//[not_allow]~^ ERROR: cannot be evaluated
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match this {
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Some(x) => x,
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None => panic!(),
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}
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}
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