rust/tests/rustdoc-ui/not-wf-ambiguous-normalization.rs
2024-03-07 06:27:09 +00:00

26 lines
539 B
Rust

//@ compile-flags: -Znormalize-docs
#![feature(type_alias_impl_trait)]
trait Allocator {
type Buffer;
}
struct DefaultAllocator;
// This unconstrained impl parameter causes the normalization of
// `<DefaultAllocator as Allocator>::Buffer` to be ambiguous,
// which caused an ICE with `-Znormalize-docs`.
impl<T> Allocator for DefaultAllocator {
//~^ ERROR: the type parameter `T` is not constrained
type Buffer = ();
}
type A = impl Fn(<DefaultAllocator as Allocator>::Buffer);
fn foo() -> A {
|_| ()
}
fn main() {}