Improve forward type declaration ban
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- Dominant language
- C++
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Description
#3762 is not correct and needs to be completed
struct Foo<T = U, U = ()> {
field1: T,
field2: U,
}
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reviewing issue #3762 and the generic-parameter handling related to the shown struct Foo<T = U, U = ()> example. Determine the intended forward type declaration ban and verify that this example is diagnosed consistently; the issue provides no file or test location, so consult the existing compiler tests before defining completion.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, rust
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100