DoubleLinkedList implementation violates aliasing rules

[F001]

Refer to : rust-lang/rust#34417

In std, the linked list was implemented based on Box type. But it's wrong.

Box uses Unique, which requires that it "the referent of the pointer should not be modified without a unique path to the Unique reference". This effectively means that Unique doesn't allow aliases, but this rule violated by the prev pointer which point to the same node as a Unique.

[kpp]

Is this fix you are looking for rust-lang/rust#60072?

[F001]

No. I was referring to rust-lang/rust#34608 .