rust/tests/rustdoc/not-wf-ambiguous-normalization.rs

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2022-10-21 18:53:27 +00:00
// 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 {
type Buffer = ();
}
type A = impl Fn(<DefaultAllocator as Allocator>::Buffer);
fn foo() -> A {
|_| ()
}
fn main() {}