[cxx-interop] Avoid circular reference errors when importing C++ structs #69327
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When importing a C++ struct, if its owning module requires cplusplus, Swift tried to auto-conform it to certain protocols from the Cxx module. This triggers name lookup in the clang struct, specifically for `__beginUnsafe()` and `__endUnsafe` methods, which imports all of the base structs including their methods. This moves the import of base structs out of the name lookup request, preventing cycles. rdar://116426238
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@swift-ci please smoke test |
This was referenced Oct 24, 2023
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When importing a C++ struct, if its owning module requires cplusplus, Swift tried to auto-conform it to certain protocols from the Cxx module. This triggers name lookup in the clang struct, specifically for
__beginUnsafe()and__endUnsafemethods, which imports all of the base structs including their methods.This moves the import of base structs out of the name lookup request, preventing cycles.
rdar://116426238