37 lines
771 B
Rust
37 lines
771 B
Rust
//@ run-pass
|
|
|
|
#![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();
|
|
}
|