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Add support for C unions in Swift. #473

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adrian-prantl
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Same as #472

C unions are struct types in Swift, but their fields are not
implemented as stored properties, so the default implementation did
not work for them. This patch adds special handling for unions by
iterating over the imported VarDecls.

rdar://problem/55026321
@adrian-prantl adrian-prantl merged commit ee0c0ef into swiftlang:swift/master-next Dec 16, 2019
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