forked from OSchip/llvm-project
101 lines
2.7 KiB
Objective-C
101 lines
2.7 KiB
Objective-C
// RUN: clang -checker-cfref -verify %s
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#include <CoreFoundation/CFString.h>
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#include <Foundation/NSString.h>
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#include <Foundation/NSObjCRuntime.h>
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#include <Foundation/NSArray.h>
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NSComparisonResult f1(NSString* s) {
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NSString *aString = nil;
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return [s compare:aString]; // expected-warning {{Argument to 'NSString' method 'compare:' cannot be nil.}}
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}
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NSComparisonResult f2(NSString* s) {
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NSString *aString = nil;
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return [s caseInsensitiveCompare:aString]; // expected-warning {{Argument to 'NSString' method 'caseInsensitiveCompare:' cannot be nil.}}
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}
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NSComparisonResult f3(NSString* s, NSStringCompareOptions op) {
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NSString *aString = nil;
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return [s compare:aString options:op]; // expected-warning {{Argument to 'NSString' method 'compare:options:' cannot be nil.}}
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}
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NSComparisonResult f4(NSString* s, NSStringCompareOptions op, NSRange R) {
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NSString *aString = nil;
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return [s compare:aString options:op range:R]; // expected-warning {{Argument to 'NSString' method 'compare:options:range:' cannot be nil.}}
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}
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NSComparisonResult f5(NSString* s, NSStringCompareOptions op, NSRange R) {
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NSString *aString = nil;
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return [s compare:aString options:op range:R locale:nil]; // expected-warning {{Argument to 'NSString' method 'compare:options:range:locale:' cannot be nil.}}
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}
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NSComparisonResult f6(NSString* s) {
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return [s componentsSeparatedByCharactersInSet:nil]; // expected-warning {{Argument to 'NSString' method 'componentsSeparatedByCharactersInSet:' cannot be nil.}}
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}
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NSString* f7(NSString* s1, NSString* s2, NSString* s3) {
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NSString* s4 = CFStringCreateWithFormat(kCFAllocatorDefault, NULL,
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L"%@ %@ (%@)",
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s1, s2, s3);
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CFRetain(s4);
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return s4; // expected-warning{{leak}}
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}
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NSMutableArray* f8() {
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NSString* s = [[NSString alloc] init];
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NSMutableArray* a = [[NSMutableArray alloc] initWithCapacity:2];
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[a addObject:s];
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[s release]; // no-warning
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return a;
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}
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void f9() {
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NSString* s = [[NSString alloc] init];
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NSString* q = s;
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[s release];
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[q release]; // expected-warning {{used after it is released}}
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}
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NSString* f10() {
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static NSString* s = nil;
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if (!s) s = [[NSString alloc] init];
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return s; // no-warning
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}
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@interface C1 : NSObject {}
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- (NSString*) getShared;
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+ (C1*) sharedInstance;
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@end
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@implementation C1 : NSObject {}
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- (NSString*) getShared {
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static NSString* s = nil;
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if (!s) s = [[NSString alloc] init];
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return s; // no-warning
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}
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+ (C1 *)sharedInstance {
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static C1 *sharedInstance = nil;
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if (!sharedInstance) {
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sharedInstance = [[C1 alloc] init];
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}
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return sharedInstance; // no-warning
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}
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@end
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