Rust preps improved borrow checker for stabilization
The Rust team has announced that it is enabling the Polonius Alpha borrow checker on nightly releases for testing. The team expects to fully stabilize Polonius Alpha later in the year. The announcement was made in a blog post on August 4.
The Rust team has announced that it is enabling the Polonius Alpha borrow checker on nightly releases for testing. The team expects to fully stabilize Polonius Alpha later in the year.
The announcement was made in a blog post on August 4. In the blog post, Rust team member Jack Huey said there are no known remaining issues with Polonius Alpha and performance is generally acceptable for stabilization.
What Happened
Enabling the Polonius Alpha borrow checker on nightly for testing is being done to help find serious performance regressions, unsoundness in the formulation, and diagnostic issues that need to be improved, Huey said. Issues can be reported in GitHub or Zulip.
In 2023, a new formulation of a the Polonius borrow checker was proposed that required a minimal re-architecture of the existing NLL (non-lexical lifetime) implementation and could be extended to allow more sound code.
The borrow checker is a component of the Rust compiler that enforces strict rules on references, or borrowing.
Stabilization of that implementation has been delayed until now.
What Reports Say
Coverage of the story so far points to:
Continued reporting by InfoWorld as more details emerge
