swiftlang/swift

[SR-3285] Remove dependency on libuuid/rpcrt4 for UUIDs

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#45,873 opened on Nov 28, 2016

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Description
Previous ID SR-3285
Radar None
Original Reporter hughbe (JIRA User)
Type Bug
Votes 0
Component/s Compiler
Labels Bug, StarterBug
Assignee None
Priority Medium

md5: 2405be655e6db45fbc53a1eb3eb3b725

Issue Description:

From Joe Groff in https://github.com/apple/swift/pull/5949

"I believe that the only place we use UUIDs in the compiler is to print "opened archetypes" in SIL in a way that lets them be reliably parsed back as unique types. We could probably use a better uniquing scheme in SIL printing now that we have better tracking of opened type uses in SIL, and kill the UUID dependency."

Contributor guide

Research direction
Examine the SIL printing code to find where UUIDs are generated for opened archetypes. Propose an alternative uniquing scheme such as using an incrementing integer or a content based hash. Replace the UUID generation and update tests accordingly.
Tech stack
swiftc
Domain
compilers
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
SwiftGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75