[5.10][cxx-interop] disallow use of non-trivial C++ types in @objc declarat… #69343
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…ions
Even though such types can technically be represented in C++, Swift's @objc support does not support them
rdar://114163485
(cherry picked from commit c2e15d6)
Explanation:
Swift's
@objc
methods and properties do not support returning non-trivial C++ records. This change ensures that such types are explicitly disallowed for@objc
methods instead of crashing the compiler.Scope: C++ interop, type-checker
Risk: Low, only affects C++ interop and
@objc
type-checking.Testing: Unit tests
Original PR: #69262