[cxx-interop] pass the C++ language standard to Clang importer in Swi… #6652
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…ft when C++ interoperability is enabled (swiftlang#6649) Fixes swiftlang#6565 (cherry picked from commit cefff2b)
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@swift-ci please test |
neonichu
approved these changes
Jun 14, 2023
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@swift-ci please test windows platform |
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@swift-ci please smoke test |
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…ft when C++ interoperability is enabled (#6649)
Fixes #6565
(cherry picked from commit cefff2b)
When C++ interoperability is enabled, Swift can import Clang modules that have C++. C++ targets in SPM can use languages standards like C++20, which could be incompatible with the default C++ language standard used by Swift in the Clang importer. For that reason, if the C++ language standard is specified in the package manifest, SwiftPM should pass it when C++ interoperability is enabled to the Swift compiler.