rust-lang / rust-lang/rustfmt

runs infinitely on https://github.com/rust-lang/rust/blob/main/tests/ui/parser/survive-peano-lesson-queue.rs

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C-bug
Dominant language
Rust
Stars
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Forks
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Avg merge
2d 13h
Merged PRs (30d)
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Description

Summary

I tried to format this code:

https://github.com/rust-lang/rust/blob/main/tests/ui/parser/survive-peano-lesson-queue.rs

Expected behavior

runs finitely

Actual behavior

runs infinitely

Configuration

any

Reproduction Steps

  1. ...

Meta

rustfmt --version:

<version>

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Run rustfmt against tests/ui/parser/survive-peano-lesson-queue.rs and confirm that formatting does not terminate. Start by tracing the formatter path used for this parser input; done means rustfmt completes instead of running indefinitely, with coverage for the regression if the repository's existing tests support it.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
65/100

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