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      1 // RUN: %clang_cc1 -fsyntax-only -Wthread-safety -verify %s
      2 
      3 typedef int __attribute__((capability("role"))) ThreadRole;
      4 struct __attribute__((shared_capability("mutex"))) Mutex {};
      5 struct NotACapability {};
      6 
      7 // Put capability attributes on unions
      8 union __attribute__((capability("mutex"))) MutexUnion { int a; char* b; };
      9 typedef union { int a; char* b; } __attribute__((capability("mutex"))) MutexUnion2;
     10 
     11 // Test an invalid capability name
     12 struct __attribute__((capability("wrong"))) IncorrectName {}; // expected-warning {{invalid capability name 'wrong'; capability name must be 'mutex' or 'role'}}
     13 
     14 int Test1 __attribute__((capability("test1")));  // expected-error {{'capability' attribute only applies to structs, unions, and typedefs}}
     15 int Test2 __attribute__((shared_capability("test2"))); // expected-error {{'shared_capability' attribute only applies to structs, unions, and typedefs}}
     16 int Test3 __attribute__((acquire_capability("test3")));  // expected-warning {{'acquire_capability' attribute only applies to functions}}
     17 int Test4 __attribute__((try_acquire_capability("test4"))); // expected-error {{'try_acquire_capability' attribute only applies to functions}}
     18 int Test5 __attribute__((release_capability("test5"))); // expected-warning {{'release_capability' attribute only applies to functions}}
     19 
     20 struct __attribute__((capability(12))) Test3 {}; // expected-error {{'capability' attribute requires a string}}
     21 struct __attribute__((shared_capability(Test2))) Test4 {}; // expected-error {{'shared_capability' attribute requires a string}}
     22 
     23 struct __attribute__((capability)) Test5 {}; // expected-error {{'capability' attribute takes one argument}}
     24 struct __attribute__((shared_capability("test1", 12))) Test6 {}; // expected-error {{'shared_capability' attribute takes one argument}}
     25 
     26 struct NotACapability BadCapability;
     27 ThreadRole GUI, Worker;
     28 void Func1(void) __attribute__((requires_capability(GUI))) {}
     29 void Func2(void) __attribute__((requires_shared_capability(Worker))) {}
     30 
     31 void Func3(void) __attribute__((requires_capability)) {}  // expected-error {{'requires_capability' attribute takes at least 1 argument}}
     32 void Func4(void) __attribute__((requires_shared_capability)) {}  // expected-error {{'requires_shared_capability' attribute takes at least 1 argument}}
     33 
     34 void Func5(void) __attribute__((requires_capability(1))) {}  // expected-warning {{'requires_capability' attribute requires arguments whose type is annotated with 'capability' attribute; type here is 'int'}}
     35 void Func6(void) __attribute__((requires_shared_capability(BadCapability))) {}  // expected-warning {{'requires_shared_capability' attribute requires arguments whose type is annotated with 'capability' attribute; type here is 'struct NotACapability'}}
     36 
     37 void Func7(void) __attribute__((assert_capability(GUI))) {}
     38 void Func8(void) __attribute__((assert_shared_capability(GUI))) {}
     39 
     40 void Func9(void) __attribute__((assert_capability())) {} // expected-error {{'assert_capability' attribute takes one argument}}
     41 void Func10(void) __attribute__((assert_shared_capability())) {} // expected-error {{'assert_shared_capability' attribute takes one argument}}
     42 
     43 void Func11(void) __attribute__((acquire_capability(GUI))) {}
     44 void Func12(void) __attribute__((acquire_shared_capability(GUI))) {}
     45 
     46 void Func15(void) __attribute__((release_capability(GUI))) {}
     47 void Func16(void) __attribute__((release_shared_capability(GUI))) {}
     48 void Func17(void) __attribute__((release_generic_capability(GUI))) {}
     49 
     50 void Func21(void) __attribute__((try_acquire_capability(1))) {}
     51 void Func22(void) __attribute__((try_acquire_shared_capability(1))) {}
     52 
     53 void Func23(void) __attribute__((try_acquire_capability(1, GUI))) {}
     54 void Func24(void) __attribute__((try_acquire_shared_capability(1, GUI))) {}
     55 
     56 void Func25(void) __attribute__((try_acquire_capability())) {} // expected-error {{'try_acquire_capability' attribute takes at least 1 argument}}
     57 void Func26(void) __attribute__((try_acquire_shared_capability())) {} // expected-error {{'try_acquire_shared_capability' attribute takes at least 1 argument}}
     58 
     59 // Test that boolean logic works with capability attributes
     60 void Func27(void) __attribute__((requires_capability(!GUI)));
     61 void Func28(void) __attribute__((requires_capability(GUI && Worker)));
     62 void Func29(void) __attribute__((requires_capability(GUI || Worker)));
     63 void Func30(void) __attribute__((requires_capability((Worker || Worker) && !GUI)));
     64 
     65 int AlsoNotACapability;
     66 void Func31(void) __attribute__((requires_capability(GUI && AlsoNotACapability))); // expected-warning {{'requires_capability' attribute requires arguments whose type is annotated with 'capability' attribute; type here is 'int'}}
     67