[cxx-interop] Add attribute to hide Swift declarations from interop #84053
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Explanation: We generate declarations in the C++ interop header with "unavailable" annotations when we cannot export something to C++. These declarations can collide with existing names. Previously, there were no ways to resolve these name collisions. This PR introduces a new attribute to hide declarations from the interop header. Issues: rdar://158843666 Original PRs: swiftlang#82616 Risk: Low, this adds a new, straightforward code path. Testing: Added a compiler test. Reviewers: @egorzhdan
DougGregor
approved these changes
Sep 2, 2025
It is already handled, added a test here: swiftlang/swift-syntax#3145 |
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@swift-ci please test |
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Explanation: We generate declarations in the C++ interop header with "unavailable" annotations when we cannot export something to C++. These declarations can collide with existing names. Previously, there were no ways to resolve these name collisions. This PR introduces a new attribute to hide declarations from the interop header.
Issues: rdar://158843666
Original PRs: #82616
Risk: Low, this adds a new, straightforward code path.
Testing: Added a compiler test.
Reviewers: @egorzhdan