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1#include "nonnull.h"2 3// RUN: %clang_cc1 -fblocks -fsyntax-only -verify -Wno-objc-root-class %s4// REQUIRES: LP645@class NSObject;6 7NONNULL_ATTR8int f1(int x); // no warning9int f2(int *x) __attribute__ ((nonnull (1)));10int f3(int *x) __attribute__ ((nonnull (0))); // expected-error {{'nonnull' attribute parameter 1 is out of bounds}}11int f4(int *x, int *y) __attribute__ ((nonnull (1,2)));12int f5(int *x, int *y) __attribute__ ((nonnull (2,1)));13int f6(NSObject *x) __attribute__ ((nonnull (1))); // no-warning14int f7(NSObject *x) __attribute__ ((nonnull)); // no-warning15 16 17extern void func1 (void (^block1)(), void (^block2)(), int) __attribute__((nonnull));18 19extern void func3 (void (^block1)(), int, void (^block2)(), int)20__attribute__((nonnull(1,3)));21 22extern void func4 (void (^block1)(), void (^block2)()) __attribute__((nonnull(1)))23__attribute__((nonnull(2)));24 25void 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}}26void func7();27 28void29foo (int i1, int i2, int i3, void (^cp1)(), void (^cp2)(), void (^cp3)())30{31 func1(cp1, cp2, i1);32 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}}35 func1(cp1, cp2, 0);36 37 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}}40 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}}43 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}}46}47 48void func5(int) NONNULL_ATTR; // no warning49 50struct dispatch_object_s {51 int x;52};53 54typedef union {55 long first;56 struct dispatch_object_s *_do;57} dispatch_object_t __attribute__((transparent_union));58 59__attribute__((nonnull))60void _dispatch_queue_push_list(dispatch_object_t _head); // no warning61 62void 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 warning65}66 67#define NULL (void*)068 69@interface NSObject 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-warning73- (id)returnsObjCNonNull __attribute__((returns_nonnull)); // no-warning74- (int)returnsIntNonNull __attribute__((returns_nonnull)); // expected-warning {{'returns_nonnull' attribute only applies to return values that are pointers}}75@end76 77extern void DoSomethingNotNull(void *db) __attribute__((nonnull(1)));78 79@interface IMP 80{81 void * vp;82}83- (void*) testRetNull __attribute__((returns_nonnull));84@end85 86@implementation IMP87- (void) Meth {88 NSObject *object;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];94}95- (void*) testRetNull {96 return 0; // expected-warning {{null returned from method that requires a non-null return value}}97}98@end99 100__attribute__((objc_root_class))101@interface TestNonNullParameters102- (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)));106@end107 108void 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-warning111 [f doNotPassNullOnMethod:0]; // expected-warning {{null passed to a callee that requires a non-null argument}}112}113 114 115void 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}}117}118void PR18795_helper() {119 PR18795(0); // expected-warning{{null passed to a callee that requires a non-null argument}}120}121 122void (^PR23117)(int *) = ^(int *p1) __attribute__((nonnull(1))) {};123 124typedef int *intptr;125#pragma clang assume_nonnull begin126intptr a, b;127intptr c, (*d)();128#pragma clang assume_nonnull end129