Cover str in the wide-pointer metadata rule#2288
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This was referenced Jun 16, 2026
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We refer to the unsized tail of a type, but we hadn't defined it. Let's do that and link to the definition.
The validity rule for the metadata of a wide reference, `Box<T>`, or raw pointer mentions `dyn Trait` and slice but had omitted `str`. Let's fix that.
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This PR was rebased onto a different master commit. Here's a range-diff highlighting what actually changed. Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers. |
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The validity rule for the metadata of a wide reference,
Box<T>, or raw pointer mentionsdyn Traitand slice but had omittedstr. Let's fix that.I'm breaking this out from #2282 so that we can merge the prerequisites before considering the new lang guarantees.
This is stacked on #2286 and #2287 and those should be merged first.
cc @ehuss @RalfJung @Mark-Simulacrum