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1// RUN: %clang_analyze_cc1 -analyzer-checker=core -verify %s2 3#include <stdarg.h>4 5//===----------------------------------------------------------------------===//6// The following code is reduced using delta-debugging from7// 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; @end21@protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; @end22@interface NSObject <NSObject> {} @end23extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);24@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>25- (NSUInteger)length;26+ (id)stringWithFormat:(NSString *)format, ...;27@end28@interface NSSimpleCString : NSString {} @end29@interface NSConstantString : NSSimpleCString @end30extern void *_NSConstantStringClassReference;31typedef double NSTimeInterval;32@interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate; @end33@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@end38@interface NSException (NSExceptionRaisingConveniences)39+ (void)raise:(NSString *)name format:(NSString *)format, ...;40+ (void)raise:(NSString *)name format:(NSString *)format arguments:(va_list)argList;41@end42 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-warning56}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-warning67}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-warning76}77 78 79@interface CustomException : NSException80@end81 82int testCustomException(int *x) {83 if (x != 0) return 0;84 85 [CustomException raise:@"Blah" format:@"abc"];86 87 return *x; // no-warning88}89 90// Test that __attribute__((analyzer_noreturn)) has the intended91// effect on Objective-C methods.92 93@interface Radar1163435394+ (void) doesNotReturn __attribute__((analyzer_noreturn));95- (void) alsoDoesNotReturn __attribute__((analyzer_noreturn));96@end97 98void test_rdar11634353(void) {99 [Radar11634353 doesNotReturn];100 int *p = 0;101 *p = 0xDEADBEEF; // no-warning102}103 104void test_rdar11634352_instance(Radar11634353 *o) {105 [o alsoDoesNotReturn];106 int *p = 0;107 *p = 0xDEADBEEF; // no-warning108}109 110void test_rdar11634353_positive(void) {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@end119 120void PR11959(int *p) {121 if (!p)122 [NSException raise:@"Bad Pointer" reason:@"Who knows?"];123 *p = 0xDEADBEEF; // no-warning124}125 126// Test that hard-coded Microsoft _wassert name is recognized as a noreturn127#define assert(_Expression) (void)( (!!(_Expression)) || (_wassert(#_Expression, __FILE__, __LINE__), 0) )128extern void _wassert(const char * _Message, const char *_File, unsigned _Line);129void test_wassert(void) {130 assert(0);131 int *p = 0;132 *p = 0xDEADBEEF; // no-warning133}134#undef assert135 136// Test that hard-coded Android __assert2 name is recognized as a noreturn137#define assert(_Expression) ((_Expression) ? (void)0 : __assert2(0, 0, 0, 0));138extern void __assert2(const char *, int, const char *, const char *);139extern void _wassert(const char * _Message, const char *_File, unsigned _Line);140void test___assert2(void) {141 assert(0);142 int *p = 0;143 *p = 0xDEADBEEF; // no-warning144}145#undef assert146