use-after-free.cc revision 6a211c5814e25d6745a5058cc0e499e5235d3821 
1// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
2// RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
3// RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
4// RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
5// XFAIL: arm-linux-gnueabi
6
7#include <stdlib.h>
8int main() {
9  char *x = (char*)malloc(10 * sizeof(char));
10  free(x);
11  return x[5];
12  // CHECK: {{.*ERROR: AddressSanitizer: heap-use-after-free on address}}
13  // CHECK:   {{0x.* at pc 0x.* bp 0x.* sp 0x.*}}
14  // CHECK: {{READ of size 1 at 0x.* thread T0}}
15  // CHECK: {{    #0 0x.* in main .*use-after-free.cc:}}[[@LINE-4]]
16  // CHECK: {{0x.* is located 5 bytes inside of 10-byte region .0x.*,0x.*}}
17  // CHECK: {{freed by thread T0 here:}}
18
19  // CHECK-Linux: {{    #0 0x.* in .*free}}
20  // CHECK-Linux: {{    #1 0x.* in main .*use-after-free.cc:}}[[@LINE-10]]
21
22  // CHECK-Darwin: {{    #0 0x.* in wrap_free}}
23  // CHECK-Darwin: {{    #1 0x.* in main .*use-after-free.cc:}}[[@LINE-13]]
24
25  // CHECK: {{previously allocated by thread T0 here:}}
26
27  // CHECK-Linux: {{    #0 0x.* in .*malloc}}
28  // CHECK-Linux: {{    #1 0x.* in main .*use-after-free.cc:}}[[@LINE-19]]
29
30  // CHECK-Darwin: {{    #0 0x.* in wrap_malloc.*}}
31  // CHECK-Darwin: {{    #1 0x.* in main .*use-after-free.cc:}}[[@LINE-22]]
32  // CHECK: Shadow byte legend (one shadow byte represents 8 application bytes):
33  // CHECK: Global redzone:
34  // CHECK: ASan internal:
35}
36