3 // RUN: %clang_cc1 -fblocks -fsyntax-only -verify -Wno-objc-root-class %s
8 int f1(int x); // no warning
9 int f2(int *x) __attribute__ ((nonnull (1)));
10 int f3(int *x) __attribute__ ((nonnull (0))); // expected-error {{'nonnull' attribute parameter 1 is out of bounds}}
11 int f4(int *x, int *y) __attribute__ ((nonnull (1,2)));
12 int f5(int *x, int *y) __attribute__ ((nonnull (2,1)));
13 int f6(NSObject *x) __attribute__ ((nonnull (1))); // no-warning
14 int f7(NSObject *x) __attribute__ ((nonnull)); // no-warning
17 extern void func1 (void (^block1)(), void (^block2)(), int) __attribute__((nonnull));
19 extern void func3 (void (^block1)(), int, void (^block2)(), int)
20 __attribute__((nonnull(1,3)));
22 extern void func4 (void (^block1)(), void (^block2)()) __attribute__((nonnull(1)))
23 __attribute__((nonnull(2)));
25 void func6(); // expected-warning {{a function declaration without a prototype is deprecated in all versions of C and is treated as a zero-parameter prototype in C23, conflicting with a subsequent definition}}
29 foo (int i1, int i2, int i3, void (^cp1)(), void (^cp2)(), void (^cp3)())
33 func1(0, cp2, i1); // expected-warning {{null passed to a callee that requires a non-null argument}}
34 func1(cp1, 0, i1); // expected-warning {{null passed to a callee that requires a non-null argument}}
38 func3(0, i2, cp3, i3); // expected-warning {{null passed to a callee that requires a non-null argument}}
39 func3(cp3, i2, 0, i3); // expected-warning {{null passed to a callee that requires a non-null argument}}
41 func4(0, cp1); // expected-warning {{null passed to a callee that requires a non-null argument}}
42 func4(cp1, 0); // expected-warning {{null passed to a callee that requires a non-null argument}}
44 func6((NSObject*) 0); // expected-warning {{passing arguments to 'func6' without a prototype is deprecated in all versions of C and is not supported in C23}}
45 func7((NSObject*) 0); // expected-warning {{passing arguments to 'func7' without a prototype is deprecated in all versions of C and is not supported in C23}}
48 void func5(int) NONNULL_ATTR; // no warning
50 struct dispatch_object_s {
56 struct dispatch_object_s *_do;
57 } dispatch_object_t __attribute__((transparent_union));
59 __attribute__((nonnull))
60 void _dispatch_queue_push_list(dispatch_object_t _head); // no warning
62 void func6(dispatch_object_t _head) { // expected-note {{conflicting prototype is here}}
63 _dispatch_queue_push_list(0); // expected-warning {{null passed to a callee that requires a non-null argument}}
64 _dispatch_queue_push_list(_head._do); // no warning
70 - (void)doSomethingWithNonNullPointer:(void *)ptr :(int)iarg : (void*)ptr1 __attribute__((nonnull(1, 3)));
71 + (void)doSomethingClassyWithNonNullPointer:(void *)ptr __attribute__((nonnull(1)));
72 - (void*)returnsCNonNull __attribute__((returns_nonnull)); // no-warning
73 - (id)returnsObjCNonNull __attribute__((returns_nonnull)); // no-warning
74 - (int)returnsIntNonNull __attribute__((returns_nonnull)); // expected-warning {{'returns_nonnull' attribute only applies to return values that are pointers}}
77 extern void DoSomethingNotNull(void *db) __attribute__((nonnull(1)));
83 - (void*) testRetNull __attribute__((returns_nonnull));
89 [object doSomethingWithNonNullPointer:NULL:1:NULL]; // expected-warning 2 {{null passed to a callee that requires a non-null argument}}
90 [object doSomethingWithNonNullPointer:vp:1:NULL]; // expected-warning {{null passed to a callee that requires a non-null argument}}
91 [NSObject doSomethingClassyWithNonNullPointer:NULL]; // expected-warning {{null passed to a callee that requires a non-null argument}}
92 DoSomethingNotNull(NULL); // expected-warning {{null passed to a callee that requires a non-null argument}}
93 [object doSomethingWithNonNullPointer:vp:1:vp];
95 - (void*) testRetNull {
96 return 0; // expected-warning {{null returned from method that requires a non-null return value}}
100 __attribute__((objc_root_class))
101 @interface TestNonNullParameters
102 - (void) doNotPassNullParameterNonPointerArg:(int)__attribute__((nonnull))x; // expected-warning {{'nonnull' attribute only applies to pointer arguments}}
103 - (void) doNotPassNullParameter:(id)__attribute__((nonnull))x;
104 - (void) doNotPassNullParameterArgIndex:(id)__attribute__((nonnull(1)))x; // expected-warning {{'nonnull' attribute when used on parameters takes no arguments}}
105 - (void) doNotPassNullOnMethod:(id)x __attribute__((nonnull(1)));
108 void test(TestNonNullParameters *f) {
109 [f doNotPassNullParameter:0]; // expected-warning {{null passed to a callee that requires a non-null argument}}
110 [f doNotPassNullParameterArgIndex:0]; // no-warning
111 [f doNotPassNullOnMethod:0]; // expected-warning {{null passed to a callee that requires a non-null argument}}
115 void PR18795(int (^g)(const char *h, ...) __attribute__((nonnull(1))) __attribute__((nonnull))) {
116 g(0); // expected-warning{{null passed to a callee that requires a non-null argument}}
118 void PR18795_helper() {
119 PR18795(0); // expected-warning{{null passed to a callee that requires a non-null argument}}
122 void (^PR23117)(int *) = ^(int *p1) __attribute__((nonnull(1))) {};
125 #pragma clang assume_nonnull begin
128 #pragma clang assume_nonnull end