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 5 typedef signed char BOOL; 6 typedef int NSInteger; 7 typedef 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 17 extern 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 35 struct __CFError {}; 36 typedef struct __CFError* CFErrorRef; 37 38 void 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 42 int f1(CFErrorRef* error) { 43 if (error) *error = 0; // no-warning 44 return 0; 45 } 46 47 int f2(CFErrorRef* error) { 48 if (0 != error) *error = 0; // no-warning 49 return 0; 50 } 51 52 int f3(CFErrorRef* error) { 53 if (error != 0) *error = 0; // no-warning 54 return 0; 55 } 56 57 58
