swift-mirror/test/ClangImporter/Inputs/attr-objc_subclassing_restricted.h at jgrynspan/windows-GUID-hashable-6.2.1 - swift-mirror - Gitea: Git with a cup of tea

averello/swift-mirror

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Jordan Rose fbe65e2bc5 [ClangImporter] Import objc_subclassing_restricted classes as 'public' (#14766 )

(rather than 'open')

This attribute was originally introduced for Swift classes exposed to
Objective-C, but if it /is/ used on a pure Objective-C class Swift
should respect it. There might be an actual reason, such as a hot code
path in ContrivedExampleKit checking against the class object's
address instead of using -isKindOfClass:.

For source compatibility, only enforce this in Swift 5 mode.

rdar://problem/33971529

2018-02-21 10:14:42 -08:00

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Objective-C

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 // This file is meant to be used with the mock SDK.
 #import <Foundation.h>
 __attribute__((objc_subclassing_restricted))
 @interface Restricted: NSObject
 @end