Egor Zhdan 9178af3ec7 [cxx-interop] Enable foreign reference types in C interop ...

Most of the logic for C++ foreign reference types can be applied to C types as well. Swift had a compiler flag `-Xfrontend -experimental-c-foreign-reference-types` for awhile now which enables foreign reference types without having to enable C++ interop. This change makes it the default behavior.

Since we don't expect anyone to pass `experimental-c-foreign-reference-types` currently, this also removes the frontend flag.

rdar://150308819

2025-07-01 18:46:22 +01:00

169 KiB

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