nil-receiver-undefined-larger-than-voidptr-ret.m revision 033a07e5fca459ed184369cfee7c90d82367a93a 
1// RUN: %clang_cc1 -triple i386-apple-darwin8 -analyze -analyzer-checker=core,experimental.core -analyzer-constraints=basic -analyzer-store=region %s 2>&1 | FileCheck -check-prefix=darwin8 %s
2// RUN: %clang_cc1 -triple i386-apple-darwin9 -analyze -analyzer-checker=core,experimental.core -analyzer-constraints=basic -analyzer-store=region %s 2>&1 | FileCheck -check-prefix=darwin9 %s
3// RUN: %clang_cc1 -triple thumbv6-apple-darwin4.0.0-iphoneos -analyze -analyzer-checker=core,experimental.core -analyzer-constraints=basic -analyzer-store=region %s 2>&1 | FileCheck -check-prefix=darwin9 %s
4
5@interface MyClass {}
6- (void *)voidPtrM;
7- (int)intM;
8- (long long)longlongM;
9- (unsigned long long)unsignedLongLongM;
10- (double)doubleM;
11- (long double)longDoubleM;
12- (void)voidM;
13@end
14@implementation MyClass
15- (void *)voidPtrM { return (void *)0; }
16- (int)intM { return 0; }
17- (long long)longlongM { return 0; }
18- (unsigned long long)unsignedLongLongM { return 0; }
19- (double)doubleM { return 0.0; }
20- (long double)longDoubleM { return 0.0; }
21- (void)voidM {}
22@end
23
24void createFoo() {
25  MyClass *obj = 0;  
26  
27  void *v = [obj voidPtrM]; // no-warning
28  int i = [obj intM]; // no-warning
29}
30
31void createFoo2() {
32  MyClass *obj = 0;  
33  
34  long double ld = [obj longDoubleM];
35}
36
37void createFoo3() {
38  MyClass *obj;
39  obj = 0;  
40  
41  long long ll = [obj longlongM];
42}
43
44void createFoo4() {
45  MyClass *obj = 0;  
46  
47  double d = [obj doubleM];
48}
49
50void createFoo5() {
51  MyClass *obj = @"";  
52  
53  double d = [obj doubleM]; // no-warning
54}
55
56void createFoo6() {
57  MyClass *obj;
58  obj = 0;  
59  
60  unsigned long long ull = [obj unsignedLongLongM];
61}
62
63void handleNilPruneLoop(MyClass *obj) {
64  if (!!obj)
65    return;
66  
67  // Test if [obj intM] evaluates to 0, thus pruning the entire loop.
68  for (int i = 0; i < [obj intM]; i++) {
69    long long j = [obj longlongM];
70  }
71  
72  long long j = [obj longlongM];
73}
74
75int handleVoidInComma() {
76  MyClass *obj = 0;
77  return [obj voidM], 0;
78}
79
80int marker(void) { // control reaches end of non-void function
81}
82
83
84// CHECK-darwin8: warning: The receiver of message 'longDoubleM' is nil and returns a value of type 'long double' that will be garbage
85// CHECK-darwin8: warning: The receiver of message 'longlongM' is nil and returns a value of type 'long long' that will be garbage
86// CHECK-darwin8: warning: The receiver of message 'doubleM' is nil and returns a value of type 'double' that will be garbage
87// CHECK-darwin8: warning: The receiver of message 'unsignedLongLongM' is nil and returns a value of type 'unsigned long long' that will be garbage
88// CHECK-darwin8: warning: The receiver of message 'longlongM' is nil and returns a value of type 'long long' that will be garbage
89// CHECK-darwin9-NOT: warning: The receiver of message 'longDoubleM' is nil and returns a value of type 'long double' that will be garbage
90// CHECK-darwin9-NOT: warning: The receiver of message 'longlongM' is nil and returns a value of type 'long long' that will be garbage
91// CHECK-darwin9-NOT: warning: The receiver of message 'doubleM' is nil and returns a value of type 'double' that will be garbage
92// CHECK-darwin9-NOT: warning: The receiver of message 'unsignedLongLongM' is nil and returns a value of type 'unsigned long long' that will be garbage
93// CHECK-darwin9-NOT: warning: The receiver of message 'longlongM' is nil and returns a value of type 'long long' that will be garbage
94// CHECK-darwin9: 1 warning generated
95
96