1// RUN: %clang_cc1 -analyze -analyzer-checker=core,osx.cocoa.NSError,osx.coreFoundation.CFError -analyzer-store=region -analyzer-constraints=range -verify -Wno-objc-root-class %s 2 3 4typedef signed char BOOL; 5typedef int NSInteger; 6typedef struct _NSZone NSZone; 7@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator; 8@protocol NSObject - (BOOL)isEqual:(id)object; @end 9@protocol NSCopying - (id)copyWithZone:(NSZone *)zone; @end 10@protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; @end 11@interface NSObject <NSObject> {} @end 12@class NSDictionary; 13@interface NSError : NSObject <NSCopying, NSCoding> {} 14+ (id)errorWithDomain:(NSString *)domain code:(NSInteger)code userInfo:(NSDictionary *)dict; 15@end 16extern NSString * const NSXMLParserErrorDomain ; 17 18@interface A 19- (void)myMethodWhichMayFail:(NSError **)error; 20- (BOOL)myMethodWhichMayFail2:(NSError **)error; 21@end 22 23@implementation A 24- (void)myMethodWhichMayFail:(NSError **)error { // expected-warning {{Method accepting NSError** should have a non-void return value to indicate whether or not an error occurred}} 25 *error = [NSError errorWithDomain:@"domain" code:1 userInfo:0]; // expected-warning {{Potential null dereference}} 26} 27 28- (BOOL)myMethodWhichMayFail2:(NSError **)error { // no-warning 29 if (error) *error = [NSError errorWithDomain:@"domain" code:1 userInfo:0]; // no-warning 30 return 0; 31} 32@end 33 34struct __CFError {}; 35typedef struct __CFError* CFErrorRef; 36 37void foo(CFErrorRef* error) { // expected-warning {{Function accepting CFErrorRef* should have a non-void return value to indicate whether or not an error occurred}} 38 *error = 0; // expected-warning {{Potential null dereference}} 39} 40 41int f1(CFErrorRef* error) { 42 if (error) *error = 0; // no-warning 43 return 0; 44} 45 46int f2(CFErrorRef* error) { 47 if (0 != error) *error = 0; // no-warning 48 return 0; 49} 50 51int f3(CFErrorRef* error) { 52 if (error != 0) *error = 0; // no-warning 53 return 0; 54} 55 56 57