AST: Filter out some Obj-C overrides when MemberImportVisibility is enabled #80563
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…nabled. Unlike in Swift, Obj-C allows method overrides to be declared in extensions (categories), even outside of the module that defines the type that is being extended. When MemberImportVisibility is enabled, these overrides must be filtered out to prevent them from hijacking name lookup and causing the compiler to insist that the module that defines the extension be imported. Resolves rdar://145329988.
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tshortli
deleted the
member-import-visibility-objc-overloads-in-extensions
branch
This was referenced Apr 22, 2025
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Unlike in Swift, Obj-C allows method overrides to be declared in extensions (categories), even outside of the module that defines the type that is being extended. When
MemberImportVisibilityis enabled, these overrides must be filtered out to prevent them from hijacking name lookup and causing the compiler to insist that the module that defines the extension be imported.Resolves rdar://145329988.