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🔬 move to universe-based lifetimes #48536

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🔬 move to universe-based lifetimes#48536
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A-lifetimesArea: Lifetimes / regionsC-enhancementCategory: An issue proposing an enhancement or a PR with one.C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.WG-traits[RETIRED] Working group: Traits
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@nikomatsakis
nikomatsakis
opened on Feb 25, 2018
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rustc currently uses a "leak-check"-based system for handling higher-ranked bounds. This design has a few flaws (e.g. #33684), and doesn't scale well to quantification over types and other things. @sgrif has been exploring moving to an alternate system, which I am dubbing the "universe" system. This is the system used by chalk.

The currently implementation is in these two PRs:

#47861
#48407

This issue exists to track the move for now.

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nikomatsakis
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WG-traits[RETIRED] Working group: Traits
on Feb 25, 2018
nikomatsakis
changed the title [-]move to universe-based lifetimes[/-] [+]🔬 move to universe-based lifetimes[/+] on Feb 25, 2018
nikomatsakis
mentioned this on Feb 25, 2018
jkordish
added
C-enhancementCategory: An issue proposing an enhancement or a PR with one.
A-lifetimesArea: Lifetimes / regions
T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.
C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFC
on May 6, 2018
nikomatsakis
self-assigned this
on Oct 9, 2018
nikomatsakis
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chalk-integration
on Oct 15, 2018
nikomatsakis

nikomatsakis commented on Jan 10, 2019

@nikomatsakis
nikomatsakis
on Jan 10, 2019
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Implemented in #55517

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A-lifetimesArea: Lifetimes / regionsC-enhancementCategory: An issue proposing an enhancement or a PR with one.C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.WG-traits[RETIRED] Working group: Traits

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        🔬 move to universe-based lifetimes · Issue #48536 · rust-lang/rust