clang/test/Sema/attr-capabilities.c

   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 a different capability name
  12 struct __attribute__((capability("custom"))) CustomName {};
  13
  14 int Test1 __attribute__((capability("test1")));  // expected-error {{'capability' attribute only applies to structs, unions, classes, and typedefs}}
  15 int Test2 __attribute__((shared_capability("test2"))); // expected-error {{'shared_capability' attribute only applies to structs, unions, classes, 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-warning {{'assert_capability' attribute without capability arguments can only be applied to non-static methods of a class}}
  41 void Func10(void) __attribute__((assert_shared_capability())) {} // expected-warning {{'assert_shared_capability' attribute without capability arguments can only be applied to non-static methods of a class}}
  42
  43 void Func11(void) __attribute__((acquire_capability(GUI))) {}
  44 void Func12(void) __attribute__((acquire_shared_capability(GUI))) {}
  45
  46 void Func13(void) __attribute__((acquire_capability())) {} // expected-warning {{'acquire_capability' attribute without capability arguments can only be applied to non-static methods of a class}}
  47 void Func14(void) __attribute__((acquire_shared_capability())) {} // expected-warning {{'acquire_shared_capability' attribute without capability arguments can only be applied to non-static methods of a class}}
  48
  49 void Func15(void) __attribute__((release_capability(GUI))) {}
  50 void Func16(void) __attribute__((release_shared_capability(GUI))) {}
  51 void Func17(void) __attribute__((release_generic_capability(GUI))) {}
  52
  53 void Func18(void) __attribute__((release_capability())) {} // expected-warning {{'release_capability' attribute without capability arguments can only be applied to non-static methods of a class}}
  54 void Func19(void) __attribute__((release_shared_capability())) {} // expected-warning {{'release_shared_capability' attribute without capability arguments can only be applied to non-static methods of a class}}
  55 void Func20(void) __attribute__((release_generic_capability())) {} // expected-warning {{'release_generic_capability' attribute without capability arguments can only be applied to non-static methods of a class}}
  56
  57 void Func21(void) __attribute__((try_acquire_capability(1))) {} // expected-warning {{'try_acquire_capability' attribute without capability arguments can only be applied to non-static methods of a class}}
  58 void Func22(void) __attribute__((try_acquire_shared_capability(1))) {} // expected-warning {{'try_acquire_shared_capability' attribute without capability arguments can only be applied to non-static methods of a class}}
  59
  60 void Func23(void) __attribute__((try_acquire_capability(1, GUI))) {}
  61 void Func24(void) __attribute__((try_acquire_shared_capability(1, GUI))) {}
  62
  63 void Func25(void) __attribute__((try_acquire_capability())) {} // expected-error {{'try_acquire_capability' attribute takes at least 1 argument}}
  64 void Func26(void) __attribute__((try_acquire_shared_capability())) {} // expected-error {{'try_acquire_shared_capability' attribute takes at least 1 argument}}
  65
  66 // Test that boolean logic works with capability attributes
  67 void Func27(void) __attribute__((requires_capability(!GUI)));
  68 void Func28(void) __attribute__((requires_capability(GUI && Worker)));
  69 void Func29(void) __attribute__((requires_capability(GUI || Worker)));
  70 void Func30(void) __attribute__((requires_capability((Worker || Worker) && !GUI)));
  71
  72 int AlsoNotACapability;
  73 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'}}