1// RUN: %clang_analyze_cc1 -Wno-objc-literal-conversion -analyzer-checker=core,unix.Malloc,osx.cocoa.NonNilReturnValue,debug.ExprInspection -analyzer-store=region -verify %s
2
3void clang_analyzer_eval(int);
4
5typedef signed char BOOL;
6typedef long NSInteger;
7typedef unsigned long NSUInteger;
8
9@protocol NSObject
10@end
11@interface NSObject <NSObject> {}
12@end
13@protocol NSCopying
14@end
15@protocol NSCoding
16@end
17
18@interface NSString @end
19@interface NSString (NSStringExtensionMethods)
20+ (id)stringWithUTF8String:(const char *)nullTerminatedCString;
21@end
22
23@interface NSNumber
24+ (NSNumber *)numberWithChar:(char)value;
25+ (NSNumber *)numberWithUnsignedChar:(unsigned char)value;
26+ (NSNumber *)numberWithShort:(short)value;
27+ (NSNumber *)numberWithUnsignedShort:(unsigned short)value;
28+ (NSNumber *)numberWithInt:(int)value;
29+ (NSNumber *)numberWithUnsignedInt:(unsigned int)value;
30+ (NSNumber *)numberWithLong:(long)value;
31+ (NSNumber *)numberWithUnsignedLong:(unsigned long)value;
32+ (NSNumber *)numberWithLongLong:(long long)value;
33+ (NSNumber *)numberWithUnsignedLongLong:(unsigned long long)value;
34+ (NSNumber *)numberWithFloat:(float)value;
35+ (NSNumber *)numberWithDouble:(double)value;
36+ (NSNumber *)numberWithBool:(BOOL)value;
37+ (NSNumber *)numberWithInteger:(NSInteger)value ;
38+ (NSNumber *)numberWithUnsignedInteger:(NSUInteger)value ;
39@end
40
41@interface NSValue : NSObject <NSCopying, NSCoding>
42- (void)getValue:(void *)value;
43+ (NSValue *)valueWithBytes:(const void *)value
44                   objCType:(const char *)type;
45@end
46
47typedef typeof(sizeof(int)) size_t;
48extern void *malloc(size_t);
49extern void free(void *);
50extern char *strdup(const char *str);
51
52id constant_string() {
53    return @("boxed constant string.");
54}
55
56id dynamic_string() {
57    return @(strdup("boxed dynamic string")); // expected-warning{{Potential memory leak}}
58}
59
60typedef struct __attribute__((objc_boxable)) {
61  const char *str;
62} BoxableStruct;
63
64id leak_within_boxed_struct() {
65  BoxableStruct bs;
66  bs.str = strdup("dynamic string"); // The duped string shall be owned by val.
67  NSValue *val = @(bs); // no-warning
68  return val;
69}
70
71id leak_of_boxed_struct() {
72  BoxableStruct *bs = malloc(sizeof(BoxableStruct)); // The pointer stored in bs isn't owned by val.
73  NSValue *val = @(*bs); // expected-warning{{Potential leak of memory pointed to by 'bs'}}
74  return val;
75}
76
77id const_char_pointer(int *x) {
78  if (x)
79    return @(3);
80  return @(*x); // expected-warning {{Dereference of null pointer (loaded from variable 'x')}}
81}
82
83void checkNonNil() {
84  clang_analyzer_eval(!!@3); // expected-warning{{TRUE}}
85  clang_analyzer_eval(!!@(3+4)); // expected-warning{{TRUE}}
86  clang_analyzer_eval(!!@(57.0)); // expected-warning{{TRUE}}
87
88  const char *str = "abc";
89  clang_analyzer_eval(!!@(str)); // expected-warning{{TRUE}}
90  clang_analyzer_eval(!!@__objc_yes); // expected-warning{{TRUE}}
91}
92
93