Auto merge of #112062 - lukas-code:unsized-layout, r=wesleywiser

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Make struct layout not depend on unsizeable tail

fixes (after backport) https://github.com/rust-lang/rust/issues/112048

Since unsizing `Ptr<Foo<T>>` -> `Ptr<Foo<U>` just copies the pointer and adds the metadata, the layout of `Foo` must not depend on niches in and alignment of the tail `T`.

Nominating for beta 1.71, because it will have this issue: `@rustbot` label beta-nominated

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bors 2023-06-13 22:34:59 +00:00

parent bfb3f185d7 293d2e15d5

commit c2bbfcb986

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