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 4 typedef signed char BOOL; 5 typedef int NSInteger; 6 typedef 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 16 extern 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 34 struct __CFError {}; 35 typedef struct __CFError* CFErrorRef; 36 37 void 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 41 int f1(CFErrorRef* error) { 42 if (error) *error = 0; // no-warning 43 return 0; 44 } 45 46 int f2(CFErrorRef* error) { 47 if (0 != error) *error = 0; // no-warning 48 return 0; 49 } 50 51 int f3(CFErrorRef* error) { 52 if (error != 0) *error = 0; // no-warning 53 return 0; 54 } 55 56 57
