modulewrap: Disable ObjC interop by default on non-Darwin platforms #73440
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0a5653d started to call `IGM.finalize()`, which leads the Clang instance to emit ObjC metadata sections when the ObjC interop is enabled. Emitting ObjC metadata sections is not well supported on non-Darwin platforms and causes crashes for WebAssembly and COFF object formats[^1]. modulewrap tool did not configure the ObjC interop option, so it always enabled the ObjC interop. This patch aligns the default ObjC interop value with other tools by disabling it on non-Darwin platforms. [^1]: https://github.com/apple/llvm-project/blob/stable/20230725/clang/lib/CodeGen/CGObjCMac.cpp#L5068-L5074
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@swift-ci test |
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@swift-ci test WebAssembly |
MaxDesiatov
approved these changes
May 5, 2024
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Merging to get the CI status back to green for now. |
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0a5653d started to call
IGM.finalize(), which leads the Clang instance to emit ObjC metadata sections when the ObjC interop is enabled. Emitting ObjC metadata sections is not well supported on non-Darwin platforms and causes crashes for WebAssembly and COFF object formats1.modulewrap tool did not configure the ObjC interop option, so it always enabled the ObjC interop. This patch aligns the default ObjC interop value with other tools by disabling it on non-Darwin platforms.
This fixes https://ci.swift.org/job/oss-swift-pr-test-crosscompile-wasm-ubuntu-20_04/566/
Footnotes
https://github.com/apple/llvm-project/blob/stable/20230725/clang/lib/CodeGen/CGObjCMac.cpp#L5068-L5074 ↩