1// RUN: %clang_cc1 -analyze -analyzer-checker=core,osx.cocoa.NSError,osx.coreFoundation.CFError -analyzer-store=region -analyzer-constraints=basic -verify -Wno-objc-root-class %s 2// 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 3 4 5typedef signed char BOOL; 6typedef int NSInteger; 7typedef struct _NSZone NSZone; 8@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator; 9@protocol NSObject - (BOOL)isEqual:(id)object; @end 10@protocol NSCopying - (id)copyWithZone:(NSZone *)zone; @end 11@protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; @end 12@interface NSObject <NSObject> {} @end 13@class NSDictionary; 14@interface NSError : NSObject <NSCopying, NSCoding> {} 15+ (id)errorWithDomain:(NSString *)domain code:(NSInteger)code userInfo:(NSDictionary *)dict; 16@end 17extern NSString * const NSXMLParserErrorDomain ; 18 19@interface A 20- (void)myMethodWhichMayFail:(NSError **)error; 21- (BOOL)myMethodWhichMayFail2:(NSError **)error; 22@end 23 24@implementation A 25- (void)myMethodWhichMayFail:(NSError **)error { // expected-warning {{Method accepting NSError** should have a non-void return value to indicate whether or not an error occurred}} 26 *error = [NSError errorWithDomain:@"domain" code:1 userInfo:0]; // expected-warning {{Potential null dereference.}} 27} 28 29- (BOOL)myMethodWhichMayFail2:(NSError **)error { // no-warning 30 if (error) *error = [NSError errorWithDomain:@"domain" code:1 userInfo:0]; // no-warning 31 return 0; 32} 33@end 34 35struct __CFError {}; 36typedef struct __CFError* CFErrorRef; 37 38void foo(CFErrorRef* error) { // expected-warning {{Function accepting CFErrorRef* should have a non-void return value to indicate whether or not an error occurred}} 39 *error = 0; // expected-warning {{Potential null dereference.}} 40} 41 42int f1(CFErrorRef* error) { 43 if (error) *error = 0; // no-warning 44 return 0; 45} 46 47int f2(CFErrorRef* error) { 48 if (0 != error) *error = 0; // no-warning 49 return 0; 50} 51 52int f3(CFErrorRef* error) { 53 if (error != 0) *error = 0; // no-warning 54 return 0; 55} 56 57 58