1 // RUN: %clang --analyze -Xclang -analyzer-checker=alpha.core -Xclang -verify %s 2 3 #include <stdarg.h> 4 5 //===----------------------------------------------------------------------===// 6 // The following code is reduced using delta-debugging from 7 // Foundation.h (Mac OS X). 8 // 9 // It includes the basic definitions for the test cases below. 10 // Not directly including Foundation.h directly makes this test case 11 // both svelte and portable to non-Mac platforms. 12 //===----------------------------------------------------------------------===// 13 14 typedef signed char BOOL; 15 typedef unsigned int NSUInteger; 16 typedef struct _NSZone NSZone; 17 @class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator; 18 @protocol NSObject - (BOOL)isEqual:(id)object; 19 @end @protocol NSCopying - (id)copyWithZone:(NSZone *)zone; 20 @end @protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone; @end 21 @protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; @end 22 @interface NSObject <NSObject> {} @end 23 extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone); 24 @interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> 25 - (NSUInteger)length; 26 + (id)stringWithFormat:(NSString *)format, ...; 27 @end 28 @interface NSSimpleCString : NSString {} @end 29 @interface NSConstantString : NSSimpleCString @end 30 extern void *_NSConstantStringClassReference; 31 typedef double NSTimeInterval; 32 @interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate; @end 33 @class NSString, NSDictionary, NSArray; 34 @interface NSException : NSObject <NSCopying, NSCoding> {} 35 + (NSException *)exceptionWithName:(NSString *)name reason:(NSString *)reason userInfo:(NSDictionary *)userInfo; 36 - (void)raise; 37 @end 38 @interface NSException (NSExceptionRaisingConveniences) 39 + (void)raise:(NSString *)name format:(NSString *)format, ...; 40 + (void)raise:(NSString *)name format:(NSString *)format arguments:(va_list)argList; 41 @end 42 43 enum {NSPointerFunctionsStrongMemory = (0 << 0), NSPointerFunctionsZeroingWeakMemory = (1 << 0), NSPointerFunctionsOpaqueMemory = (2 << 0), NSPointerFunctionsMallocMemory = (3 << 0), NSPointerFunctionsMachVirtualMemory = (4 << 0), NSPointerFunctionsObjectPersonality = (0 << 8), NSPointerFunctionsOpaquePersonality = (1 << 8), NSPointerFunctionsObjectPointerPersonality = (2 << 8), NSPointerFunctionsCStringPersonality = (3 << 8), NSPointerFunctionsStructPersonality = (4 << 8), NSPointerFunctionsIntegerPersonality = (5 << 8), NSPointerFunctionsCopyIn = (1 << 16), }; 44 45 //===----------------------------------------------------------------------===// 46 // Test cases. 47 //===----------------------------------------------------------------------===// 48 49 int f1(int *x, NSString* s) { 50 51 if (x) ++x; 52 53 [NSException raise:@"Blah" format:[NSString stringWithFormat:@"Blah %@", s]]; 54 55 return *x; // no-warning 56 } 57 58 int f2(int *x, ...) { 59 60 if (x) ++x; 61 va_list alist; 62 va_start(alist, x); 63 64 [NSException raise:@"Blah" format:@"Blah %@" arguments:alist]; 65 66 return *x; // no-warning 67 } 68 69 int f3(int* x) { 70 71 if (x) ++x; 72 73 [[NSException exceptionWithName:@"My Exception" reason:@"Want to test exceptions." userInfo:0] raise]; 74 75 return *x; // no-warning 76 } 77 78 79 @interface CustomException : NSException 80 @end 81 82 int testCustomException(int *x) { 83 if (x != 0) return 0; 84 85 [CustomException raise:@"Blah" format:@"abc"]; 86 87 return *x; // no-warning 88 } 89 90 // Test that __attribute__((analyzer_noreturn)) has the intended 91 // effect on Objective-C methods. 92 93 @interface Radar11634353 94 + (void) doesNotReturn __attribute__((analyzer_noreturn)); 95 - (void) alsoDoesNotReturn __attribute__((analyzer_noreturn)); 96 @end 97 98 void test_rdar11634353() { 99 [Radar11634353 doesNotReturn]; 100 int *p = 0; 101 *p = 0xDEADBEEF; // no-warning 102 } 103 104 void test_rdar11634352_instance(Radar11634353 *o) { 105 [o alsoDoesNotReturn]; 106 int *p = 0; 107 *p = 0xDEADBEEF; // no-warning 108 } 109 110 void test_rdar11634353_positive() { 111 int *p = 0; 112 *p = 0xDEADBEEF; // expected-warning {{null pointer}} 113 } 114 115 // Test analyzer_noreturn on category methods. 116 @interface NSException (OBExtensions) 117 + (void)raise:(NSString *)name reason:(NSString *)reason __attribute__((analyzer_noreturn)); 118 @end 119 120 void PR11959(int *p) { 121 if (!p) 122 [NSException raise:@"Bad Pointer" reason:@"Who knows?"]; 123 *p = 0xDEADBEEF; // no-warning 124 } 125 126
