Command SwiftEmitModule failed with a nonzero exit code

[chenyunguiMilook]

Description
see description here

Steps to reproduce

1. clone app from here
2. build app

Expected behavior
expected build successfully

Environment

• Swift compiler version info
  swift-driver version: 1.75.2 Apple Swift version 5.8 (swiftlang-5.8.0.124.2 clang-1403.0.22.11.100)

• Xcode version info
  Xcode 14.3
  Build version 14E222b

• Deployment target:
  iOS 16.4

[chenyunguiMilook]

clone the test app from here, to reproduce the issue!

[tshortli]

It looks like the crash is caused by infinite recursion during module deserialization:

499 swift-frontend                	       0x1053ef074 swift::ModuleFile::getTypeChecked(llvm::PointerEmbeddedInt<unsigned int, 31>) + 780
500 swift-frontend                	       0x105405b10 swift::DeclDeserializer::deserializeClass(llvm::ArrayRef<unsigned long long>, llvm::StringRef) + 340
501 swift-frontend                	       0x1053eb144 swift::ModuleFile::getDeclChecked(llvm::PointerEmbeddedInt<unsigned int, 31>, llvm::function_ref<bool (swift::DeclAttributes)>) + 2836
502 swift-frontend                	       0x10540a13c swift::serialization::decls_block::detail::TypeRecordDispatch<(swift::serialization::decls_block::detail::TypeRecords)4>::deserialize(swift::ModuleFile&, llvm::SmallVectorImpl<unsigned long long>&, llvm::StringRef) + 88
503 swift-frontend                	       0x1053ef074 swift::ModuleFile::getTypeChecked(llvm::PointerEmbeddedInt<unsigned int, 31>) + 780
504 swift-frontend                	       0x105405b10 swift::DeclDeserializer::deserializeClass(llvm::ArrayRef<unsigned long long>, llvm::StringRef) + 340
505 swift-frontend                	       0x1053eb144 swift::ModuleFile::getDeclChecked(llvm::PointerEmbeddedInt<unsigned int, 31>, llvm::function_ref<bool (swift::DeclAttributes)>) + 2836
506 swift-frontend                	       0x10540a13c swift::serialization::decls_block::detail::TypeRecordDispatch<(swift::serialization::decls_block::detail::TypeRecords)4>::deserialize(swift::ModuleFile&, llvm::SmallVectorImpl<unsigned long long>&, llvm::StringRef) + 88
507 swift-frontend                	       0x1053ef074 swift::ModuleFile::getTypeChecked(llvm::PointerEmbeddedInt<unsigned int, 31>) + 780
508 swift-frontend                	       0x105405b10 swift::DeclDeserializer::deserializeClass(llvm::ArrayRef<unsigned long long>, llvm::StringRef) + 340
509 swift-frontend                	       0x1053eb144 swift::ModuleFile::getDeclChecked(llvm::PointerEmbeddedInt<unsigned int, 31>, llvm::function_ref<bool (swift::DeclAttributes)>) + 2836
510 swift-frontend                	       0x10540a13c swift::serialization::decls_block::detail::TypeRecordDispatch<(swift::serialization::decls_block::detail::TypeRecords)4>::deserialize(swift::ModuleFile&, llvm::SmallVectorImpl<unsigned long long>&, llvm::StringRef) + 88

cc @xymus

[Kyle-Ye]

I see the key component to reproduce it.

Is this valid Swift code? (In Implementation.swift)

public final class CVAnchor: AnchorLayer<CVPath>, Anchor {
    
}

public final class CVPath: AnchorPathLayer<CVAnchor>, AnchorPath {
    
}

[chenyunguiMilook]

It should be, if put all the code to the app (no package reference), the project runs normally!