Egor Zhdan fd04cc3a4e [cxx-interop][Runtime] Initialize metadata of a Swift array of C++ references correctly ...

This fixes a crash at runtime when destroying a Swift array of values of a C++ foreign reference type.

Swift optimizes the amount of metadata emitted for `_ContiguousArrayStorage<Element>` by reusing `_ContiguousArrayStorage<AnyObject>` whenever possible (see `getContiguousArrayStorageType`). However, C++ foreign reference types are not `AnyObject`s, since they have custom retain/release operations.

This change disables the `_ContiguousArrayStorage` metadata optimization for C++ reference types, which makes sure that `swift_arrayDestroy` will call the correct release operation for elements of `[MyCxxRefType]`.

rdar://127154770

2024-05-15 19:20:44 +01:00

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