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// RUN: %clang_cc1 -fsyntax-only -verify %s
#if !__has_feature(attribute_availability)
# error 'availability' attribute is not available
#endif
void f0() __attribute__((availability(macosx,introduced=10.2,deprecated=10.4,obsoleted=10.6)));
void f1() __attribute__((availability(macosx,deprecated=10.4,introduced=10.2,obsoleted=10.6)));
void f2() __attribute__((availability(ios,deprecated=10.4.7,introduced=10,obsoleted=10.6)));
void f3() __attribute__((availability(ios,deprecated=10.4.7,introduced=10,obsoleted=10.6,introduced=10.2))); // expected-error{{redundant 'introduced' availability change; only the last specified change will be used}}
void f4() __attribute__((availability(macosx,introduced=10.5), availability(ios,unavailable)));
void f5() __attribute__((availability(macosx,introduced=10.5), availability(ios,unavailable, unavailable))); // expected-error{{redundant 'unavailable' availability change; only the last specified change will be used}}
void f6() __attribute__((availability(macosx,unavailable,introduced=10.5))); // expected-warning{{warning: 'unavailable' availability overrides all other availability information}}
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