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swift-mirror/lib/Frontend/Frontend.cpp
Artem Chikin f92abb8c81 Verify that _Concurrency *can* be imported on implicit import.
In case the compiler is used with concurrency features enabled (by-default or otherwise), and an older SDK is used which does not include the `_Concurrency` module, do not load this module implicitly. Instead, emit a diagnostic indicating that no such module is found.

rdar://76967260
2021-04-22 13:46:59 -07:00

49 KiB