forked from OSchip/llvm-project
128 lines
5.0 KiB
Objective-C
128 lines
5.0 KiB
Objective-C
#include "nonnull.h"
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// RUN: %clang_cc1 -fblocks -fsyntax-only -verify -Wno-objc-root-class %s
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// REQUIRES: LP64
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@class NSObject;
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NONNULL_ATTR
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int f1(int x); // no warning
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int f2(int *x) __attribute__ ((nonnull (1)));
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int f3(int *x) __attribute__ ((nonnull (0))); // expected-error {{'nonnull' attribute parameter 1 is out of bounds}}
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int f4(int *x, int *y) __attribute__ ((nonnull (1,2)));
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int f5(int *x, int *y) __attribute__ ((nonnull (2,1)));
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int f6(NSObject *x) __attribute__ ((nonnull (1))); // no-warning
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int f7(NSObject *x) __attribute__ ((nonnull)); // no-warning
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extern void func1 (void (^block1)(), void (^block2)(), int) __attribute__((nonnull));
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extern void func3 (void (^block1)(), int, void (^block2)(), int)
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__attribute__((nonnull(1,3)));
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extern void func4 (void (^block1)(), void (^block2)()) __attribute__((nonnull(1)))
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__attribute__((nonnull(2)));
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void func6();
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void func7();
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void
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foo (int i1, int i2, int i3, void (^cp1)(), void (^cp2)(), void (^cp3)())
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{
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func1(cp1, cp2, i1);
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func1(0, cp2, i1); // expected-warning {{null passed to a callee that requires a non-null argument}}
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func1(cp1, 0, i1); // expected-warning {{null passed to a callee that requires a non-null argument}}
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func1(cp1, cp2, 0);
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func3(0, i2, cp3, i3); // expected-warning {{null passed to a callee that requires a non-null argument}}
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func3(cp3, i2, 0, i3); // expected-warning {{null passed to a callee that requires a non-null argument}}
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func4(0, cp1); // expected-warning {{null passed to a callee that requires a non-null argument}}
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func4(cp1, 0); // expected-warning {{null passed to a callee that requires a non-null argument}}
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// Shouldn't these emit warnings? Clang doesn't, and neither does GCC. It
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// seems that the checking should handle Objective-C pointers.
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func6((NSObject*) 0); // no-warning
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func7((NSObject*) 0); // no-warning
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}
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void func5(int) NONNULL_ATTR; // no warning
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// rdar://6857843
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struct dispatch_object_s {
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int x;
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};
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typedef union {
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long first;
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struct dispatch_object_s *_do;
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} dispatch_object_t __attribute__((transparent_union));
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__attribute__((nonnull))
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void _dispatch_queue_push_list(dispatch_object_t _head); // no warning
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void func6(dispatch_object_t _head) {
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_dispatch_queue_push_list(0); // expected-warning {{null passed to a callee that requires a non-null argument}}
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_dispatch_queue_push_list(_head._do); // no warning
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}
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// rdar://9287695
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#define NULL (void*)0
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@interface NSObject
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- (void)doSomethingWithNonNullPointer:(void *)ptr :(int)iarg : (void*)ptr1 __attribute__((nonnull(1, 3)));
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+ (void)doSomethingClassyWithNonNullPointer:(void *)ptr __attribute__((nonnull(1)));
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- (void*)returnsCNonNull __attribute__((returns_nonnull)); // no-warning
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- (id)returnsObjCNonNull __attribute__((returns_nonnull)); // no-warning
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- (int)returnsIntNonNull __attribute__((returns_nonnull)); // expected-warning {{'returns_nonnull' attribute only applies to return values that are pointers}}
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@end
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extern void DoSomethingNotNull(void *db) __attribute__((nonnull(1)));
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@interface IMP
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{
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void * vp;
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}
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- (void*) testRetNull __attribute__((returns_nonnull));
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@end
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@implementation IMP
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- (void) Meth {
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NSObject *object;
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[object doSomethingWithNonNullPointer:NULL:1:NULL]; // expected-warning 2 {{null passed to a callee that requires a non-null argument}}
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[object doSomethingWithNonNullPointer:vp:1:NULL]; // expected-warning {{null passed to a callee that requires a non-null argument}}
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[NSObject doSomethingClassyWithNonNullPointer:NULL]; // expected-warning {{null passed to a callee that requires a non-null argument}}
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DoSomethingNotNull(NULL); // expected-warning {{null passed to a callee that requires a non-null argument}}
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[object doSomethingWithNonNullPointer:vp:1:vp];
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}
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- (void*) testRetNull {
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return 0; // expected-warning {{null returned from method that requires a non-null return value}}
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}
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@end
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__attribute__((objc_root_class))
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@interface TestNonNullParameters
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- (void) doNotPassNullParameterNonPointerArg:(int)__attribute__((nonnull))x; // expected-warning {{'nonnull' attribute only applies to pointer arguments}}
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- (void) doNotPassNullParameter:(id)__attribute__((nonnull))x;
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- (void) doNotPassNullParameterArgIndex:(id)__attribute__((nonnull(1)))x; // expected-warning {{'nonnull' attribute when used on parameters takes no arguments}}
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- (void) doNotPassNullOnMethod:(id)x __attribute__((nonnull(1)));
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@end
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void test(TestNonNullParameters *f) {
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[f doNotPassNullParameter:0]; // expected-warning {{null passed to a callee that requires a non-null argument}}
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[f doNotPassNullParameterArgIndex:0]; // no-warning
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[f doNotPassNullOnMethod:0]; // expected-warning {{null passed to a callee that requires a non-null argument}}
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}
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void PR18795(int (^g)(const char *h, ...) __attribute__((nonnull(1))) __attribute__((nonnull))) {
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g(0); // expected-warning{{null passed to a callee that requires a non-null argument}}
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}
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void PR18795_helper() {
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PR18795(0); // expected-warning{{null passed to a callee that requires a non-null argument}}
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}
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void (^PR23117)(int *) = ^(int *p1) __attribute__((nonnull(1))) {};
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