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