1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
// RUN: %clang_analyze_cc1 -analyzer-checker=optin.osx.OSObjectCStyleCast %s -verify
#include "os_object_base.h"
struct OSArray : public OSObject {
unsigned getCount();
};
struct A {
int x;
};
struct B : public A {
unsigned getCount();
};
unsigned warn_on_explicit_downcast(OSObject * obj) {
OSArray *a = (OSArray *) obj; // expected-warning{{C-style cast of OSObject. Use OSDynamicCast instead}}
return a->getCount();
}
void no_warn_on_upcast(OSArray *arr) {
OSObject *obj = (OSObject *) arr;
obj->retain();
obj->release();
}
unsigned no_warn_on_dynamic_cast(OSObject *obj) {
OSArray *a = OSDynamicCast(OSArray, obj);
return a->getCount();
}
__SIZE_TYPE__ no_warn_on_primitive_conversion(OSArray *arr) {
return (__SIZE_TYPE__) arr;
}
unsigned no_warn_on_other_type_cast(A *a) {
B *b = (B *) a;
return b->getCount();
}
|
