clang/test/SemaObjC/unguarded-availability.m

// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -Wunguarded-availability -fblocks -fsyntax-only -verify %s
// RUN: %clang_cc1 -xobjective-c++ -std=c++11 -DOBJCPP -triple x86_64-apple-macosx10.9 -Wunguarded-availability -fblocks -fsyntax-only -verify %s

#define AVAILABLE_10_0  __attribute__((availability(macos, introduced = 10.0)))
#define AVAILABLE_10_11 __attribute__((availability(macos, introduced = 10.11)))
#define AVAILABLE_10_12 __attribute__((availability(macos, introduced = 10.12)))

typedef int AVAILABLE_10_12 new_int; // expected-note + {{'new_int' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}

int func_10_11(void) AVAILABLE_10_11; // expected-note 8 {{'func_10_11' has been marked as being introduced in macOS 10.11 here, but the deployment target is macOS 10.9}}

#ifdef OBJCPP
// expected-note@+2 6 {{'func_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
#endif
int func_10_12(void) AVAILABLE_10_12; // expected-note 7 {{'func_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}

int func_10_0(void) AVAILABLE_10_0;

void use_func(void) {
  func_10_11(); // expected-warning{{'func_10_11' is only available on macOS 10.11 or newer}} expected-note{{enclose 'func_10_11' in an @available check to silence this warning}}

  if (@available(macos 10.11, *))
    func_10_11();
  else
    func_10_11(); // expected-warning{{'func_10_11' is only available on macOS 10.11 or newer}} expected-note{{enclose 'func_10_11' in an @available check to silence this warning}}
}

void defn_10_11(void) AVAILABLE_10_11;

void defn_10_11(void) {
  func_10_11();
}

void nested_ifs(void) {
  if (@available(macos 10.12, *)) {
    if (@available(macos 10.10, *)) {
      func_10_12();
    } else {
      func_10_12();
    }
  } else {
    func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{enclose 'func_10_12' in an @available check to silence this warning}}
  }
}

void star_case(void) {
  if (@available(ios 9, *)) {
    func_10_11(); // expected-warning{{'func_10_11' is only available on macOS 10.11 or newer}} expected-note{{enclose 'func_10_11' in an @available check to silence this warning}}
    func_10_0();
  } else
    func_10_11(); // expected-warning{{'func_10_11' is only available on macOS 10.11 or newer}} expected-note{{enclose 'func_10_11' in an @available check to silence this warning}}

  if (@available(macOS 10.11, *)) {
    if (@available(ios 8, *)) {
      func_10_11();
      func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{enclose}}
    } else {
      func_10_11();
      func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{enclose}}
    }
  }
}

typedef int int_10_11 AVAILABLE_10_11; // expected-note {{'int_10_11' has been marked as being introduced in macOS 10.11 here, but the deployment target is macOS 10.9}}
#ifdef OBJCPP
// expected-note@+2 {{'int_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
#endif
typedef int int_10_12 AVAILABLE_10_12; // expected-note 2 {{'int_10_12' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}

void use_typedef(void) {
  int_10_11 x; // expected-warning{{'int_10_11' is only available on macOS 10.11 or newer}} expected-note{{enclose 'int_10_11' in an @available check to silence this warning}}
}

__attribute__((objc_root_class))
AVAILABLE_10_11 @interface Class_10_11 { // expected-note{{annotate 'Class_10_11' with an availability attribute to silence}}
  int_10_11 foo;
  int_10_12 bar; // expected-warning {{'int_10_12' is only available on macOS 10.12 or newer}}
}
- (void)method1;
- (void)method2;
@end

@implementation Class_10_11
- (void) method1 {
  func_10_11();
  func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{enclose 'func_10_12' in an @available check to silence this warning}}
}

- (void)method2 AVAILABLE_10_12 {
  func_10_12();
}

@end

int protected_scope(void) {
  if (@available(macos 10.20, *)) { // expected-note 2 {{jump enters controlled statement of if available}}
  label1:
    return 0;
  } else {
  label2:
    goto label1; // expected-error{{cannot jump from this goto statement to its label}}
  }

  goto label2; // expected-error{{cannot jump from this goto statement to its label}}
}

struct S {
  int m1;
  int m2 __attribute__((availability(macos, introduced = 10.12))); // expected-note{{has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}

  struct Nested {
    int nested_member __attribute__((availability(macos, introduced = 10.12))); // expected-note{{'nested_member' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
  } n;
};

int test_members(void) {
  struct S s;
  (void)s.m1;
  (void)s.m2; // expected-warning{{'m2' is only available on macOS 10.12 or newer}} expected-note{{@available}}

  (void)s.n.nested_member; // expected-warning{{'nested_member' is only available on macOS 10.12 or newer}} expected-note{{@available}}
}

void test_blocks(void) {
  (void) ^{
    func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{@available}}
  };

  if (@available(macos 10.12, *))
    (void) ^{
      func_10_12();
      (void) ^{
        func_10_12();
      };
    };
}

void test_params(int_10_12 x); // expected-warning {{'int_10_12' is only available on macOS 10.12 or newer}} expected-note{{annotate 'test_params' with an availability attribute to silence this warning}}

void test_params2(int_10_12 x) AVAILABLE_10_12; // no warn

void (^topLevelBlockDecl)(void) = ^ {
  func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{@available}}
  if (@available(macos 10.12, *))
    func_10_12();
};

AVAILABLE_10_12
__attribute__((objc_root_class))
@interface InterWithProp // expected-note 2 {{'InterWithProp' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
@property(class) int x;
+ (void) setX: (int)newX AVAILABLE_10_12; // expected-note{{'setX:' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
@end
void test_property(void) {
  int y = InterWithProp.x; // expected-warning{{'InterWithProp' is only available on macOS 10.12 or newer}} expected-note{{@available}}
  InterWithProp.x = y; // expected-warning{{'InterWithProp' is only available on macOS 10.12 or newer}} expected-note{{@available}} expected-warning{{'setX:' is only available on macOS 10.12 or newer}} expected-note{{@available}}
}

__attribute__((objc_root_class))
@interface Subscriptable
- (id)objectAtIndexedSubscript:(int)sub AVAILABLE_10_12; // expected-note{{'objectAtIndexedSubscript:' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
@end

void test_at(Subscriptable *x) {
  id y = x[42]; // expected-warning{{'objectAtIndexedSubscript:' is only available on macOS 10.12 or newer}} expected-note{{@available}}
}

void uncheckAtAvailable(void) {
  if (@available(macOS 10.12, *) || 0) // expected-warning {{@available does not guard availability here; use if (@available) instead}}
    func_10_12(); // expected-warning {{'func_10_12' is only available on macOS 10.12 or newer}}
  // expected-note@-1 {{enclose 'func_10_12' in an @available check to silence this warning}}
}

void justAtAvailable(void) {
  int availability = @available(macOS 10.12, *); // expected-warning {{@available does not guard availability here; use if (@available) instead}}
}

#ifdef OBJCPP

int f(char) AVAILABLE_10_12; // #f_char_def
int f(int);

template <class T> int use_f() {
  if (@available(macos 10.12, *)) {
    return f(T()); // no warning expected
  } else {
  // expected-warning@#f_call {{'f' is only available on macOS 10.12 or newer}}
  // expected-note@#f_char_inst {{in instantiation of function template specialization 'use_f<char>' requested here}}
  // expected-note@#f_char_def {{'f' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
  // expected-note@#f_call {{enclose 'f' in an @available check to silence this warning}}
    return f(T()); // #f_call
  }
}

int a = use_f<int>();
int b = use_f<char>(); // #f_char_inst

int use_f2() AVAILABLE_10_12 {
  int c = use_f<int>();
  int d = use_f<char>(); // no warning expected
}

template <class> int use_at_available() {
  if (@available(macos 10.12, *))
    return func_10_12();
  else
    return func_10_12(); // expected-warning {{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{enclose}}
}

int instantiate_template() {
  if (@available(macos 10.12, *)) {
    use_at_available<char>();
  } else {
    use_at_available<float>();
  }
}

template <class>
int with_availability_attr() AVAILABLE_10_11 { // expected-note 2 {{'with_availability_attr<int>' has been marked as being introduced in macOS 10.11 here, but the deployment target is macOS 10.9}}
  return 0;
}

int instantiate_with_availability_attr() {
  if (@available(macos 10.12, *))
    with_availability_attr<char>();
  else
    with_availability_attr<int>(); // expected-warning {{'with_availability_attr<int>' is only available on macOS 10.11 or newer}} expected-note {{enclose}}
}

int instantiate_availability() {
  if (@available(macOS 10.12, *))
    with_availability_attr<int_10_12>();
  else
    with_availability_attr<int_10_12>(); // expected-warning{{'with_availability_attr<int>' is only available on macOS 10.11 or newer}} expected-warning{{'int_10_12' is only available on macOS 10.12 or newer}} expected-note 2 {{enclose}}
}

auto topLevelLambda = [] () {
  func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{@available}}
  if (@available(macos 10.12, *))
    func_10_12();
};

void functionInFunction() {
  func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{@available}}
  struct DontWarnTwice {
    void f() {
      func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{@available}}
    }
  };
  void([] () {
    func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{@available}}
  });
  (void)(^ {
    func_10_12(); // expected-warning{{'func_10_12' is only available on macOS 10.12 or newer}} expected-note{{@available}}
  });

  if (@available(macos 10.12, *)) {
    void([]() {
      func_10_12();
      void([] () {
        func_10_12();
      });
      struct DontWarn {
        void f() {
          func_10_12();
        }
      };
    });
  }

  if (@available(macos 10.12, *)) {
    struct DontWarn {
      void f() {
        func_10_12();
        void([] () {
          func_10_12();
        });
        struct DontWarn2 {
          void f() {
            func_10_12();
          }
        };
      }
    };
  }
}

#endif

struct InStruct { // expected-note{{annotate 'InStruct' with an availability attribute to silence}}
  new_int mem; // expected-warning{{'new_int' is only available on macOS 10.12 or newer}}

  struct { new_int mem; } anon; // expected-warning{{'new_int' is only available on macOS 10.12 or newer}} expected-note{{annotate anonymous struct with an availability attribute to silence}}
};

#ifdef OBJCPP
static constexpr int AVAILABLE_10_12 SomeConstexprValue = 2; // expected-note{{'SomeConstexprValue' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
typedef enum { // expected-note{{annotate anonymous enum with an availability attribute}}
  SomeValue = SomeConstexprValue // expected-warning{{'SomeConstexprValue' is only available on macOS 10.12 or newer}}
} SomeEnum;
#endif

@interface InInterface
-(new_int)meth; // expected-warning{{'new_int' is only available on macOS 10.12 or newer}} expected-note{{annotate 'meth' with an availability attribute}}
@end

@interface Proper // expected-note{{annotate 'Proper' with an availability attribute}}
@property (class) new_int x; // expected-warning{{'new_int' is only available}}
@end

void with_local_struct(void) {
  struct local {
    new_int x; // expected-warning{{'new_int' is only available}} expected-note{{enclose 'new_int' in an @available check}}
  };
  if (@available(macos 10.12, *)) {
    struct DontWarn {
      new_int x;
    };
  }
}

// Avoid the warning on protocol requirements.

AVAILABLE_10_12
@protocol NewProtocol // expected-note {{'NewProtocol' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
@end

@protocol ProtocolWithNewProtocolRequirement <NewProtocol> // expected-note {{annotate 'ProtocolWithNewProtocolRequirement' with an availability attribute to silence}}

@property(copy) id<NewProtocol> prop; // expected-warning {{'NewProtocol' is only available on macOS 10.12 or newer}}

@end

@interface BaseClass
@end

@interface ClassWithNewProtocolRequirement : BaseClass <NewProtocol>

@end

@interface BaseClass (CategoryWithNewProtocolRequirement) <NewProtocol>

@end

typedef enum {
  AK_Dodo __attribute__((availability(macos, deprecated=10.3))), // expected-note 3 {{marked deprecated here}}
  AK_Cat __attribute__((availability(macos, introduced=10.4))),
  AK_CyborgCat __attribute__((availability(macos, introduced=10.12))), // expected-note {{'AK_CyborgCat' has been marked as being introduced in macOS 10.12 here, but the deployment target is macOS 10.9}}
} Animals;

void switchAnimals(Animals a) {
  switch (a) {
  case AK_Dodo: break; // expected-warning{{'AK_Dodo' is deprecated}}
  case AK_Cat: break;
  case AK_Cat|AK_CyborgCat: break; // expected-warning{{case value not in enum}}
  case AK_CyborgCat: break; // no warn
  }

  switch (a) {
  case AK_Dodo...AK_CyborgCat: // expected-warning {{'AK_Dodo' is depr}}
    break;
  }

  (void)AK_Dodo; // expected-warning{{'AK_Dodo' is deprecated}}
  (void)AK_Cat; // no warning
  (void)AK_CyborgCat; // expected-warning{{'AK_CyborgCat' is only available on macOS 10.12 or newer}} expected-note {{@available}}
}


// test static initializers has the same availability as the deployment target and it cannot be overwritten.
@interface HasStaticInitializer : BaseClass
+ (void)load AVAILABLE_10_11; // expected-warning{{ignoring availability attribute on '+load' method}}
@end

@implementation HasStaticInitializer
+ (void)load {
  func_10_11(); // expected-warning{{'func_10_11' is only available on macOS 10.11 or newer}} expected-note{{enclose 'func_10_11' in an @available check to silence this warning}}
}
@end

// test availability from interface is ignored when checking the unguarded availability in +load method.
AVAILABLE_10_11
@interface HasStaticInitializer1 : BaseClass
+ (void)load;
+ (void)load: (int)x; // no warning.
@end

@implementation HasStaticInitializer1
+ (void)load {
  func_10_11(); // expected-warning{{'func_10_11' is only available on macOS 10.11 or newer}} expected-note{{enclose 'func_10_11' in an @available check to silence this warning}}
}
+ (void)load: (int)x {
  func_10_11(); // no warning.
}
@end

__attribute__((constructor))
void is_constructor(void);

AVAILABLE_10_11 // expected-warning{{ignoring availability attribute with constructor attribute}}
void is_constructor(void) {
  func_10_11(); // expected-warning{{'func_10_11' is only available on macOS 10.11 or newer}} expected-note{{enclose 'func_10_11' in an @available check to silence this warning}}
}

AVAILABLE_10_11 // expected-warning{{ignoring availability attribute with destructor attribute}}
__attribute__((destructor))
void is_destructor(void) {
  func_10_11(); // expected-warning{{'func_10_11' is only available on macOS 10.11 or newer}} expected-note{{enclose 'func_10_11' in an @available check to silence this warning}}
}