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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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// RUN: %clang_cc1 -triple arm64-apple-ios10 -Wunguarded-availability -fblocks -fsyntax-only -verify %s

__attribute__((availability(ios,unavailable)))
@protocol Prot // expected-note {{here}}

@end

@interface A
@end

__attribute__((availability(ios,unavailable)))
@interface A (Cat) <Prot> // No error.
@end

__attribute__((availability(tvos,unavailable)))
@interface B @end
@interface B (Cat) <Prot> // expected-error {{'Prot' is unavailable: not available on iOS}}
@end