1 | // RUN: %clang_analyze_cc1 -analyzer-checker=core -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 | // Test that hard-coded Microsoft _wassert name is recognized as a noreturn |
127 | #define assert(_Expression) (void)( (!!(_Expression)) || (_wassert(#_Expression, __FILE__, __LINE__), 0) ) |
128 | extern void _wassert(const char * _Message, const char *_File, unsigned _Line); |
129 | void test_wassert() { |
130 | assert(0); |
131 | int *p = 0; |
132 | *p = 0xDEADBEEF; // no-warning |
133 | } |
134 | #undef assert |
135 | |
136 | // Test that hard-coded Android __assert2 name is recognized as a noreturn |
137 | #define assert(_Expression) ((_Expression) ? (void)0 : __assert2(0, 0, 0, 0)); |
138 | extern void __assert2(const char *, int, const char *, const char *); |
139 | extern void _wassert(const char * _Message, const char *_File, unsigned _Line); |
140 | void test___assert2() { |
141 | assert(0); |
142 | int *p = 0; |
143 | *p = 0xDEADBEEF; // no-warning |
144 | } |
145 | #undef assert |
146 | |