137 lines
3.0 KiB
Objective-C
137 lines
3.0 KiB
Objective-C
// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-config suppress-null-return-paths=false -verify %s
|
|
// RUN: %clang_analyze_cc1 -analyzer-checker=core -verify -DSUPPRESSED=1 %s
|
|
// RUN: %clang_analyze_cc1 -analyzer-checker=core -fobjc-arc -verify -DSUPPRESSED=1 %s
|
|
// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-config avoid-suppressing-null-argument-paths=true -DSUPPRESSED=1 -DNULL_ARGS=1 -verify %s
|
|
|
|
#define ARC __has_feature(objc_arc)
|
|
|
|
#ifdef SUPPRESSED
|
|
// expected-no-diagnostics
|
|
#endif
|
|
|
|
@interface PointerWrapper
|
|
- (int *)getPtr;
|
|
- (id)getObject;
|
|
@end
|
|
|
|
id getNil() {
|
|
return 0;
|
|
}
|
|
|
|
void testNilReceiverHelperA(int *x) {
|
|
*x = 1;
|
|
#ifndef SUPPRESSED
|
|
// expected-warning@-2 {{Dereference of null pointer}}
|
|
#endif
|
|
}
|
|
|
|
void testNilReceiverHelperB(int *x) {
|
|
*x = 1;
|
|
#if !defined(SUPPRESSED)
|
|
// expected-warning@-2 {{Dereference of null pointer}}
|
|
#endif
|
|
}
|
|
|
|
void testNilReceiver(int coin) {
|
|
id x = getNil();
|
|
if (coin)
|
|
testNilReceiverHelperA([x getPtr]);
|
|
else
|
|
testNilReceiverHelperB([[x getObject] getPtr]);
|
|
}
|
|
|
|
// FALSE NEGATIVES (over-suppression)
|
|
|
|
__attribute__((objc_root_class))
|
|
@interface SomeClass {
|
|
int ivar;
|
|
}
|
|
-(int *)methodReturningNull;
|
|
|
|
@property(readonly) int *propertyReturningNull;
|
|
|
|
@property(readonly) int *synthesizedProperty;
|
|
|
|
@property(readonly) SomeClass *propertyReturningNil;
|
|
|
|
@end
|
|
|
|
@interface SubOfSomeClass : SomeClass
|
|
@end
|
|
|
|
@implementation SubOfSomeClass
|
|
@end
|
|
|
|
@implementation SomeClass
|
|
-(int *)methodReturningNull {
|
|
return 0;
|
|
}
|
|
|
|
-(int *)propertyReturningNull {
|
|
return 0;
|
|
}
|
|
|
|
-(SomeClass *)propertyReturningNil {
|
|
return 0;
|
|
}
|
|
|
|
+(int *)classPropertyReturningNull {
|
|
return 0;
|
|
}
|
|
@end
|
|
|
|
void testMethodReturningNull(SomeClass *sc) {
|
|
int *result = [sc methodReturningNull];
|
|
*result = 1;
|
|
#ifndef SUPPRESSED
|
|
// expected-warning@-2 {{Dereference of null pointer}}
|
|
#endif
|
|
}
|
|
|
|
void testPropertyReturningNull(SomeClass *sc) {
|
|
int *result = sc.propertyReturningNull;
|
|
*result = 1;
|
|
#ifndef SUPPRESSED
|
|
// expected-warning@-2 {{Dereference of null pointer}}
|
|
#endif
|
|
}
|
|
|
|
@implementation SubOfSomeClass (ForTestOfSuperProperty)
|
|
-(void)testSuperPropertyReturningNull {
|
|
int *result = super.propertyReturningNull;
|
|
*result = 1;
|
|
#ifndef SUPPRESSED
|
|
// expected-warning@-2 {{Dereference of null pointer}}
|
|
#endif
|
|
}
|
|
@end
|
|
|
|
void testClassPropertyReturningNull() {
|
|
int *result = SomeClass.classPropertyReturningNull;
|
|
*result = 1;
|
|
#ifndef SUPPRESSED
|
|
// expected-warning@-2 {{Dereference of null pointer}}
|
|
#endif
|
|
}
|
|
|
|
@implementation SomeClass (ForTestOfPropertyReturningNil)
|
|
void testPropertyReturningNil(SomeClass *sc) {
|
|
SomeClass *result = sc.propertyReturningNil;
|
|
result->ivar = 1;
|
|
#ifndef SUPPRESSED
|
|
// expected-warning@-2 {{Access to instance variable 'ivar' results in a dereference of a null pointer (loaded from variable 'result')}}
|
|
#endif
|
|
}
|
|
@end
|
|
|
|
void testSynthesizedPropertyReturningNull(SomeClass *sc) {
|
|
if (sc.synthesizedProperty)
|
|
return;
|
|
|
|
int *result = sc.synthesizedProperty;
|
|
*result = 1;
|
|
#ifndef SUPPRESSED
|
|
// expected-warning@-2 {{Dereference of null pointer}}
|
|
#endif
|
|
}
|