1 // RUN: clang-cc -fsyntax-only -verify %s
2 
3 int* ret_local() {
4   int x = 1;
5   return &x; // expected-warning {{address of stack memory}}
6 }
7 
8 int* ret_local_array() {
9   int x[10];
10   return x; // expected-warning {{address of stack memory}}
11 }
12 
13 int* ret_local_array_element(int i) {
14   int x[10];
15   return &x[i]; // expected-warning {{address of stack memory}}
16 }
17 
18 int *ret_local_array_element_reversed(int i) {
19   int x[10];
20   return &i[x]; // expected-warning {{address of stack memory}}
21 }
22 
23 int* ret_local_array_element_const_index() {
24   int x[10];
25   return &x[2];  // expected-warning {{address of stack memory}}
26 }
27 
28 int& ret_local_ref() {
29   int x = 1;
30   return x;  // expected-warning {{reference to stack memory}}
31 }
32 
33 int* ret_local_addrOf() {
34   int x = 1;
35   return &*&x; // expected-warning {{address of stack memory}}
36 }
37 
38 int* ret_local_addrOf_paren() {
39   int x = 1;
40   return (&(*(&x))); // expected-warning {{address of stack memory}}
41 }
42 
43 int* ret_local_addrOf_ptr_arith() {
44   int x = 1;
45   return &*(&x+1); // expected-warning {{address of stack memory}}
46 }
47 
48 int* ret_local_addrOf_ptr_arith2() {
49   int x = 1;
50   return &*(&x+1); // expected-warning {{address of stack memory}}
51 }
52 
53 int* ret_local_field() {
54   struct { int x; } a;
55   return &a.x; // expected-warning {{address of stack memory}}
56 }
57 
58 int& ret_local_field_ref() {
59   struct { int x; } a;
60   return a.x; // expected-warning {{reference to stack memory}}
61 }
62 
63 int* ret_conditional(bool cond) {
64   int x = 1;
65   int y = 2;
66   return cond ? &x : &y; // expected-warning {{address of stack memory}}
67 }
68 
69 int* ret_conditional_rhs(int *x, bool cond) {
70   int y = 1;
71   return cond ? x : &y;  // expected-warning {{address of stack memory}}
72 }
73 
74 void* ret_c_cast() {
75   int x = 1;
76   return (void*) &x;  // expected-warning {{address of stack memory}}
77 }
78 
79 int* ret_static_var() {
80   static int x = 1;
81   return &x;  // no warning.
82 }
83 
84 int z = 1;
85 
86 int* ret_global() {
87   return &z;  // no warning.
88 }
89 
90 int* ret_parameter(int x) {
91   return &x;  // expected-warning {{address of stack memory}}
92 }
93 
94 
95 void* ret_cpp_static_cast(short x) {
96   return static_cast<void*>(&x); // expected-warning {{address of stack memory}}
97 }
98 
99 int* ret_cpp_reinterpret_cast(double x) {
100   return reinterpret_cast<int*>(&x); // expected-warning {{address of stack me}}
101 }
102 
103 int* ret_cpp_reinterpret_cast_no_warning(long x) {
104   return reinterpret_cast<int*>(x); // no-warning
105 }
106 
107 int* ret_cpp_const_cast(const int x) {
108   return const_cast<int*>(&x);  // expected-warning {{address of stack memory}}
109 }
110 
111 // TODO: test case for dynamic_cast.  clang does not yet have
112 // support for C++ classes to write such a test case.
113