[pointer][transmute] Support generic TransmuteFrom#1969
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[pointer][transmute] Support generic TransmuteFrom#1969joshlf wants to merge 1 commit intoIfc49755af0d90eeefe7822d755d508403c266bdafrom
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This commit replaces the `TransparentWrapper` trait with a more generic, bidirectional `TransmuteFrom<T>` trait. `U: TransmuteFrom<T>` indicates that `T` and `U` have the same sizes and that `T` can be transmuted into `U` given certain alignment and validity invariant mappings. Makes progress on #1122 gherrit-pr-id: I25973ea67f59671329a920dd39183c1348942a1a
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This commit replaces the
TransparentWrappertrait with a more generic,bidirectional
TransmuteFrom<T>trait.U: TransmuteFrom<T>indicatesthat
TandUhave the same sizes and thatTcan be transmuted intoUgiven certain alignment and validity invariant mappings.Makes progress on #1122
This PR is on branch ptr-overhaul-more-generic-issue-1945.