1 | // RUN: %clang_analyze_cc1 -analyzer-checker=optin.osx.OSObjectCStyleCast %s -verify |
2 | #include "os_object_base.h" |
3 | |
4 | struct OSArray : public OSObject { |
5 | unsigned getCount(); |
6 | }; |
7 | |
8 | struct A { |
9 | int x; |
10 | }; |
11 | struct B : public A { |
12 | unsigned getCount(); |
13 | }; |
14 | |
15 | unsigned warn_on_explicit_downcast(OSObject * obj) { |
16 | OSArray *a = (OSArray *) obj; // expected-warning{{C-style cast of OSObject. Use OSDynamicCast instead}} |
17 | return a->getCount(); |
18 | } |
19 | |
20 | void no_warn_on_upcast(OSArray *arr) { |
21 | OSObject *obj = (OSObject *) arr; |
22 | obj->retain(); |
23 | obj->release(); |
24 | } |
25 | |
26 | unsigned no_warn_on_dynamic_cast(OSObject *obj) { |
27 | OSArray *a = OSDynamicCast(OSArray, obj); |
28 | return a->getCount(); |
29 | } |
30 | |
31 | __SIZE_TYPE__ no_warn_on_primitive_conversion(OSArray *arr) { |
32 | return (__SIZE_TYPE__) arr; |
33 | } |
34 | |
35 | unsigned no_warn_on_other_type_cast(A *a) { |
36 | B *b = (B *) a; |
37 | return b->getCount(); |
38 | } |
39 | |
40 | |