mirror of https://github.com/rust-lang/rust
35 lines
550 B
Rust
35 lines
550 B
Rust
//@ known-bug: #103507
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#![feature(type_alias_impl_trait)]
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#![feature(const_trait_impl)]
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#![feature(const_refs_to_cell)]
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use std::marker::Destruct;
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trait T {
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type Item;
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}
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type Alias<'a> = impl T<Item = &'a ()>;
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struct S;
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impl<'a> T for &'a S {
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type Item = &'a ();
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}
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const fn filter_positive<'a>() -> &'a Alias<'a> {
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&&S
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}
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const fn with_positive<F: ~const for<'a> Fn(&'a Alias<'a>) + ~const Destruct>(fun: F) {
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fun(filter_positive());
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}
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const fn foo(_: &Alias<'_>) {}
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const BAR: () = {
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with_positive(foo);
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};
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fn main() {}
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