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Jordan Rose 7629253ab5 Test that newer libobjcs let the Swift runtime set up a class's layout (#21942)
Specifically, when the class is referenced from Objective-C first,
before being referenced from Swift in any way. This is important for
resilience, since up until now Objective-C isn't used to the size of a
class changing based on anything other than a superclass's size
changing.

This is basically the test that would have gone with 9024768b0 had
there been a build of libobjc to test it with.

rdar://problem/45718008
2019-01-17 17:39:44 -08:00

5 lines
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Objective-C

@import Foundation;
@interface OneWordSuperclass : NSObject
@end