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 14typedef signed char BOOL; 15typedef unsigned int NSUInteger; 16typedef 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 23extern 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 30extern void *_NSConstantStringClassReference; 31typedef 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 43enum {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 49int 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 58int 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 69int 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 82int 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 98void test_rdar11634353() { 99 [Radar11634353 doesNotReturn]; 100 int *p = 0; 101 *p = 0xDEADBEEF; // no-warning 102} 103 104void test_rdar11634352_instance(Radar11634353 *o) { 105 [o alsoDoesNotReturn]; 106 int *p = 0; 107 *p = 0xDEADBEEF; // no-warning 108} 109 110void 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 120void PR11959(int *p) { 121 if (!p) 122 [NSException raise:@"Bad Pointer" reason:@"Who knows?"]; 123 *p = 0xDEADBEEF; // no-warning 124} 125 126