Gabor Horvath 22b46d3c9c [cxx-interop] Mark some zero-sized value types as unavailable ...

Currently, we do not support exporting zero-sized value types from Swift
to C++. It needs some work on our end as these types are not part of the
lowered signature. In the meantime, this PR makes sure that common (but
not all) zero sized types are properly marked as unavailable. This is
important as the proper diagnostic will give users a hint how to work
around this problem. Moreover, it is really easy to hit this when
someone is experimenting with interop, so it is important to not have a
cryptic failure mode.

rdar://138122545

2024-10-28 14:00:35 +00:00

4.3 KiB

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