1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core,debug.ExprInspection %s -std=c++11 -verify
2
3void clang_analyzer_eval(bool);
4
5void testAddressof(int x) {
6  clang_analyzer_eval(&x == __builtin_addressof(x)); // expected-warning{{TRUE}}
7}
8
9void testSize() {
10  struct {
11    int x;
12    int y;
13    char z;
14  } object;
15  clang_analyzer_eval(__builtin_object_size(&object.y, 0) == sizeof(object) - sizeof(int)); // expected-warning{{TRUE}}
16
17  // Clang can't actually evaluate these builtin "calls", but importantly they don't actually evaluate the argument expression either.
18  int i = 0;
19  char buf[10];
20  clang_analyzer_eval(__builtin_object_size(&buf[i++], 0) == sizeof(buf)); // expected-warning{{FALSE}}
21  clang_analyzer_eval(__builtin_object_size(&buf[++i], 0) == sizeof(buf) - 1); // expected-warning{{FALSE}}
22
23  clang_analyzer_eval(i == 0); // expected-warning{{TRUE}}
24}
25
26void test_assume_aligned_1(char *p) {
27  char *q;
28
29  q = (char*) __builtin_assume_aligned(p, 16);
30  clang_analyzer_eval(p == q); // expected-warning{{TRUE}}
31}
32
33void test_assume_aligned_2(char *p) {
34  char *q;
35
36  q = (char*) __builtin_assume_aligned(p, 16, 8);
37  clang_analyzer_eval(p == q); // expected-warning{{TRUE}}
38}
39
40void test_assume_aligned_3(char *p) {
41  void *q;
42
43  q = __builtin_assume_aligned(p, 16, 8);
44  clang_analyzer_eval(p == q); // expected-warning{{TRUE}}
45}
46
47void test_assume_aligned_4(char *p) {
48  char *q;
49
50  q = (char*) __builtin_assume_aligned(p + 1, 16);
51  clang_analyzer_eval(p == q); // expected-warning{{FALSE}}
52}
53