1// RUN: %clangxx_asan -O0 %s -o %t
2// RUN: not %run %t 0 2>&1 | FileCheck %s
3// RUN: not %run %t 1 2>&1 | FileCheck %s
4// RUN: not %run %t 2 2>&1 | FileCheck %s
5// RUN: not %run %t 3 2>&1 | FileCheck %s
6// RUN: not %run %t 4 2>&1 | FileCheck %s
7// RUN: not %run %t 5 2>&1 | FileCheck %s
8// RUN: not %run %t 6 2>&1 | FileCheck %s
9// RUN: not %run %t 7 2>&1 | FileCheck %s
10// RUN: not %run %t 8 2>&1 | FileCheck %s
11// RUN: not %run %t 9 2>&1 | FileCheck %s
12// RUN: not %run %t 10 2>&1 | FileCheck %s
13
14#include "defines.h"
15#include <stdlib.h>
16#include <string>
17#include <vector>
18
19template <class T> struct Ptr {
20 void Store(T *ptr) { t = ptr; }
21
22 void Access() { *t = {}; }
23
24 T *t;
25};
26
27template <class T, size_t N> struct Ptr<T[N]> {
28 using Type = T[N];
29 void Store(Type *ptr) { t = *ptr; }
30
31 void Access() { *t = {}; }
32
33 T *t;
34};
35
36template <class T> ATTRIBUTE_NOINLINE void test() {
37 Ptr<T> ptr;
38 {
39 T x;
40 ptr.Store(&x);
41 }
42
43 ptr.Access();
44 // CHECK: ERROR: AddressSanitizer: stack-use-after-scope
45 // CHECK: #{{[0-9]+}} 0x{{.*}} in {{(void )?test.*\((void)?\) .*}}use-after-scope-types.cpp
46 // CHECK: Address 0x{{.*}} is located in stack of thread T{{.*}} at offset [[OFFSET:[^ ]+]] in frame
47 // {{\[}}[[OFFSET]], {{[0-9]+}}) 'x'
48}
49
50int main(int argc, char **argv) {
51 using Tests = void (*)();
52 Tests tests[] = {
53 &test<bool>,
54 &test<char>,
55 &test<int>,
56 &test<double>,
57 &test<float>,
58 &test<void*>,
59 &test<std::vector<std::string>>,
60 &test<int[3]>,
61 &test<int[1000]>,
62 &test<char[3]>,
63 &test<char[1000]>,
64 };
65
66 int n = atoi(nptr: argv[1]);
67 if (n == sizeof(tests) / sizeof(tests[0])) {
68 for (auto te : tests)
69 te();
70 } else {
71 tests[n]();
72 }
73
74 return 0;
75}
76

source code of compiler-rt/test/asan/TestCases/use-after-scope-types.cpp