Annotation alias has unclear error with `class.together`
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- Dominant language
- Racket
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- 601
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- 74
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- 5
Description
This produces expansion time error, ?: annotation static information needed before completed in: name
annot.macro 'E': 'Int || C || D'
class.together:
class C(c :: List.of(E))
class D(d :: E)
This works though
annot.macro 'E': 'Int || C || D'
class.together:
class C(c :: List.of(Int || C || D))
class D(d :: E)
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First steps
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- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the two annotation-macro examples and compare expansion behavior for class.together. Trace where the first example reports the expansion-time error and determine what diagnostic or expansion behavior should result; done means the unclear error is resolved without breaking the working form.
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
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 38/100