Circular Reference Compilation Error when Compiling with Xcode 6.0 Beta Tools

[mikelikespie]

Thank you for contributing to MarkdownUI!

Before you submit an issue, please complete the report with all the relevant details for your bug and go through every item in the checklist.

Describe the bug A clear and concise description of what the bug is.

Checklist

• [X] I can reproduce this issue with a vanilla SwiftUI project.
• [X] I can reproduce this issue using the main branch of this package.
• [X] This bug hasn't been addressed in an existing GitHub issue.

Steps to reproduce

1. Using the new xcode 6 beta, try building the project or run swift build with new CLI tools selected

Expected behavior It to build

Screenshots

error: emit-module command failed with exit code 1 (use -v to see invocation)
<unknown>:0: error: circular reference
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: error: circular reference
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: error: circular reference
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
/Users/ml/code/swift-markdown-ui/Sources/MarkdownUI/Parser/InlineNode.swift:3:7: note: through reference here
 1 | import Foundation
 2 | 
 3 |  enum InlineNode: Hashable {
   |       |- note: through reference here
   |       |- note: through reference here
   |       `- note: through reference here
 4 |   case text(String)
 5 |   case softBreak
<unknown>:0: error: circular reference
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: error: circular reference
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: error: circular reference
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
/Users/ml/code/swift-markdown-ui/Sources/MarkdownUI/Parser/InlineNode.swift:3:7: note: through reference here
 1 | import Foundation
 2 | 
 3 |  enum InlineNode: Hashable {
   |       |- note: through reference here
   |       |- note: through reference here
   |       `- note: through reference here
 4 |   case text(String)
 5 |   case softBreak
<unknown>:0: error: circular reference
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: error: circular reference
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: error: circular reference
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
<unknown>:0: note: through reference here
/Users/ml/code/swift-markdown-ui/Sources/MarkdownUI/Parser/InlineNode.swift:3:7: note: through reference here
 1 | import Foundation
 2 | 
 3 |  enum InlineNode: Hashable {
   |       |- note: through reference here
   |       |- note: through reference here
   |       `- note: through reference here
 4 |   case text(String)
 5 |   case softBreak

Version information

• MarkdownUI: c0daf6eb79d97964180f3113868c990bd1c4a007
• OS: macos 14.5 (23F79)
• Xcode: Version 16.0 beta (16A5171c)

Additional context Add any other context about the problem here.

[electricsidecar-dev]

I've submitted FB13830058 to Apple for this bug.

I've isolated the bug down to the following minimally reproducible sample:

indirect enum BlockNode: Hashable {
  case paragraph(content: [InlineNode])
}

indirect enum InlineNode: Hashable {
  case emphasis(children: [InlineNode])
}

[electricsidecar-dev]

Oddly, the following snippet builds:

indirect enum BlockNode {
  case paragraph(content: InlineNode)
}

indirect enum InlineNode {
  case foo
  case emphasis(children: [InlineNode])
}

but this one does not:

indirect enum BlockNode {
  case paragraph(content: [InlineNode])
}

indirect enum InlineNode {
  case foo
  case emphasis(children: [InlineNode])
}

[electricsidecar-dev]

More fun: the following builds

indirect enum BlockNode {
  case paragraph([InlineNode])
}

indirect enum InlineNode {
  case foo
  case emphasis(children: [InlineNode])
}

but this does not:

indirect enum BlockNode {
  case paragraph(content: [InlineNode])
}

indirect enum InlineNode {
  case foo
  case emphasis(children: [InlineNode])
}

[electricsidecar-dev]

I've got a buildable patch working locally. Will send up a PR.

[JoshuaRileyDev]

How can I reference that PR in Xcode? Or does it need to be approved

[electricsidecar-dev]

Something like this in your Package.swift should work until this PR is merged:

    dependencies: [
        .package(url: "https://github.com/electricsidecar-dev/swift-markdown-ui.git", .branch("recursive")),
    ],

[gonzalezreal]

@electricsidecar-dev Thank you for investigating this and coming up with a workaround. I hope they fix it in the upcoming Xcode 16 betas. Great work! ❤️

[alexsllater]

please push update

[gonzalezreal]

Fixed by #328