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Make num::NonZeroX::new an unstable const fn #68976

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Merged
merged 2 commits into from
Feb 10, 2020
Merged

Make num::NonZeroX::new an unstable const fn #68976

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0b20ce9
Make `num::NonZeroX::new` an unstable `const fn`
ecstatic-morse Feb 9, 2020
0755c41
Test `NonZeroU8::new` in a const context
ecstatic-morse Feb 9, 2020
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Test NonZeroU8::new in a const context
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@ecstatic-morse
ecstatic-morse committed Feb 9, 2020
commit 0755c41ae26af20c940a80b3c1f686ab5916e655
11 changes: 10 additions & 1 deletion src/test/ui/consts/const-nonzero.rs
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Original file line number Diff line number Diff line change
@@ -1,9 +1,18 @@
// build-pass (FIXME(62277): could be check-pass?)
// run-pass

#![feature(const_nonzero_int_methods)]

use std::num::NonZeroU8;

const X: NonZeroU8 = unsafe { NonZeroU8::new_unchecked(5) };
const Y: u8 = X.get();

const ZERO: Option<NonZeroU8> = NonZeroU8::new(0);
const ONE: Option<NonZeroU8> = NonZeroU8::new(1);

fn main() {
assert_eq!(Y, 5);

assert!(ZERO.is_none());
assert_eq!(ONE.unwrap().get(), 1);
}