[cxx-interop] Types exposed from ObjC modules should be behind a macro #83002
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Functions or template instantiations with Obj-C types should always be behind a macro to make sure the interop header compiles cleanly in C++. rdar://152836730
Xazax-hun
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Jul 15, 2025
… macro Explanation: We the generated reverse interop headers to be valid C++, so every declaration coming from an Obj-C module should be behind an ifdef. Unfortunately, we do not always have this information but we do know that our frameworks contain Obj-C code. So this PR makes sure every entity coming from our frameworks are behind ifdef. Issues: rdar://152836730 Original PRs: swiftlang#83002 Risk: Low, the change is narrow and straightforward. Testing: Added a compiler test. Reviewers: @egorzhdan
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Jul 16, 2025
… macro Explanation: We the generated reverse interop headers to be valid C++, so every declaration coming from an Obj-C module should be behind an ifdef. Unfortunately, we do not always have this information but we do know that our frameworks contain Obj-C code. So this PR makes sure every entity coming from our frameworks are behind ifdef. Issues: rdar://152836730 Original PRs: swiftlang#83002 Risk: Low, the change is narrow and straightforward. Testing: Added a compiler test. Reviewers: @egorzhdan
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Functions or template instantiations with Obj-C types should always be behind a macro to make sure the interop header compiles cleanly in C++.
rdar://152836730