racket / racket/typed-racket

(->* (mandatory-dom ...) (option-dom ...) #:rest Type rng) is broken

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Dominant language
Racket
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Description

What version of Racket are you using?

6.6.0.1 -

What program did you run?

https://gist.github.com/wargrey/b4467a975346b98b1210014a07b765d0 (schema.rkt for testing)

If you got an error message, please include it here.

Rep-seq: contract violation
expected: Rep?
given: Any

Contributor guide

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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

Start by running schema.rkt from the linked gist under Racket 6.6.0.1 and reproduce the Rep-seq contract violation for the reported expression. Trace the mandatory-dom, option-dom, and #:rest Type interaction to determine the failing behavior; done means the example no longer produces this violation and its intended contract behavior is covered.

Written by the indexing model from the issue text.

Assessment

Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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