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Diffstat (limited to 'src/test/ui/inline-const/const-match-pat-lifetime.rs')
-rw-r--r-- | src/test/ui/inline-const/const-match-pat-lifetime.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/ui/inline-const/const-match-pat-lifetime.rs b/src/test/ui/inline-const/const-match-pat-lifetime.rs new file mode 100644 index 000000000..6d943bbcc --- /dev/null +++ b/src/test/ui/inline-const/const-match-pat-lifetime.rs @@ -0,0 +1,37 @@ +// run-pass + +#![allow(incomplete_features)] +#![feature(const_mut_refs)] +#![feature(inline_const)] +#![feature(inline_const_pat)] + +use std::marker::PhantomData; + +// rust-lang/rust#78174: ICE: "cannot convert ReErased to a region vid" +fn issue_78174() { + match "foo" { + const { concat!("fo", "o") } => (), + _ => unreachable!(), + } +} + +#[derive(PartialEq, Eq)] +pub struct InvariantRef<'a, T: ?Sized>(&'a T, PhantomData<&'a mut &'a T>); + +impl<'a, T: ?Sized> InvariantRef<'a, T> { + pub const fn new(r: &'a T) -> Self { + InvariantRef(r, PhantomData) + } +} + +fn match_invariant_ref<'a>() { + match const { InvariantRef::<'a, _>::new(&()) } { + const { InvariantRef::<'a, ()>::new(&()) } => { + } + } +} + +fn main() { + issue_78174(); + match_invariant_ref(); +} |