cxx-crashes.cpp revision b774d73540ba62a5e6a8e9217b320b27a946cfad 
1// RUN: %clang_cc1 -analyze -analyzer-checker=core,unix.Malloc,debug.ExprInspection -verify %s
2// REQUIRES: LP64
3
4void clang_analyzer_eval(bool);
5
6int f1(char *dst) {
7  char *p = dst + 4;
8  char *q = dst + 3;
9  return !(q >= p);
10}
11
12long f2(char *c) {
13  return long(c) & 1;
14}
15
16bool f3() {
17  return !false;
18}
19
20void *f4(int* w) {
21  return reinterpret_cast<void*&>(w);
22}
23
24namespace {
25
26struct A { };
27struct B {
28  operator A() { return A(); }
29};
30
31A f(char *dst) {
32  B b;
33  return b;
34}
35
36}
37
38namespace {
39
40struct S {
41    void *p;
42};
43
44void *f(S* w) {
45    return &reinterpret_cast<void*&>(*w);
46}
47
48}
49
50namespace {
51
52struct C {
53  void *p;
54  static void f();
55};
56
57void C::f() { }
58
59}
60
61
62void vla(int n) {
63  int nums[n];
64  nums[0] = 1;
65  clang_analyzer_eval(nums[0] == 1); // expected-warning{{TRUE}}
66
67  // This used to fail with MallocChecker on, and /only/ in C++ mode.
68  // This struct is POD, though, so it should be fine to put it in a VLA.
69  struct { int x; } structs[n];
70  structs[0].x = 1;
71  clang_analyzer_eval(structs[0].x == 1); // expected-warning{{TRUE}}
72}
73
74void useIntArray(int []);
75void testIntArrayLiteral() {
76  useIntArray((int []){ 1, 2, 3 });
77}
78
79