rust/tests/ui/traits/next-solver/issue-118950-root-region.rs

24 lines
624 B
Rust

//@ compile-flags: -Znext-solver
//
// This is a gnarly test but I don't know how to minimize it, frankly.
#![feature(lazy_type_alias)]
//~^ WARN the feature `lazy_type_alias` is incomplete
trait ToUnit<'a> {
type Unit;
}
trait Overlap<T> {}
type Assoc<'a, T> = <*const T as ToUnit<'a>>::Unit;
//~^ ERROR the trait bound `*const T: ToUnit<'a>` is not satisfied
impl<T> Overlap<T> for T {}
impl<T> Overlap<for<'a> fn(Assoc<'a, T>)> for T where Missing: Overlap<T> {}
//~^ ERROR conflicting implementations of trait `Overlap<fn(_)>` for type `fn(_)`
//~| ERROR cannot find type `Missing` in this scope
fn main() {}