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Safe Transmute RFC#5

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jswrenn merged 61 commits intorust-lang:masterrust-lang/project-safe-transmute:masterfrom jswrenn:rfcjswrenn/project-safe-transmute:rfcCopy head branch name to clipboardAug 31, 2020

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Commits

Commits on Aug 3, 2020

• Create 0000-safe-transmute.md

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• Apply suggestions from code review

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  jswrenn

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  jonas-schievink

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  651e3bf

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• Fix derive expansion.

  jswrenn

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Commits on Aug 4, 2020

• reword motivation

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  jswrenn

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• Constrained -> NonEmptySlice

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• missing word

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• Apply suggestions from code review

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• add lifetime parameter to NonEmptySlice

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• TransmuteFrom connotes conversion

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• extra explanatory comments on Summary example

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• clarify why size expansion is dangerous, but leave the door open to it

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• missing word

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• Fix botched types

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Commits on Aug 5, 2020

• platform stability clarification

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• neglect::Alignment -> NeglectAlignment

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• neglect::Alignment -> NeglectAlignment

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• PromiseTransmutable extension

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  jswrenn

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• clarify the purpose of "Dissecting Stability"

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• rust -> Rust; rustc -> rustc

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  zachlute

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Commits on Aug 10, 2020

• fix typo in slice casting extension

  jswrenn

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Commits on Aug 11, 2020

• fix dead links

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• slice casting revamp

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• packet parsing example

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Commits on Aug 12, 2020

• packet parsing tweaks

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Commits on Aug 14, 2020

• simplify minimal implementation

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  4fe45b6

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• fix broken link

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• nix needless for<'a>

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• slice casting tweaks

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Commits on Aug 15, 2020

• packet parsing contributions from @joshlf

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• inline minimal implementation (with minor tweaks)

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• link to packet_formats crate in parsing example

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Commits on Aug 25, 2020

• extension: trait gadgets for querying alignment & size

  jswrenn

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• extension: casting revamp

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• rename: UnsafeTransmuteOptions -> TransmuteOptions

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• dim of variation intro

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• typo

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• possibility intros

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• simplified formulation of constructability is a compiler stability hazard

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• typo

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• fix: uninformative PromiseTransmutableInto::Archetype size trick

  jswrenn

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• remove last dependency on const-generics!

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• nix extra sentence

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Commits on Aug 27, 2020

• factor out extensions

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• rework motivation; cut case studies

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Commits on Aug 28, 2020

• lingering Type -> Archetype

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• abusing -> using

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  skade

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• update minimal impl

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• transmutation definition

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• union repr

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• REMOVE Dissecting Stability

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• REMOVE Uncommon Use-Case: Weak Stability Guarantees

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• syntax highlighting

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• rework stability rationale

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• note on endianness

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Commits on Aug 29, 2020

• undefined *or* unspecified behavior

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Commits on Aug 31, 2020

• improve stability explanation

  jswrenn

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• add explanatory note to error message

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• prior art: haskell

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• typo: TransmutableFromArchetype -> TransmutableIntoArchetype

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• change casting section heading

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• Move one of Archetype's bounds to where

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