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 // XFAIL: armv7l-unknown-linux-gnueabihf
7
8 // Test use-after-free report in the case when access is at the right border of
9 // the allocation.
10
11 #include <stdlib.h>
main()12 int main() {
13 volatile char *x = (char*)malloc(sizeof(char));
14 free((void*)x);
15 *x = 42;
16 // CHECK: {{.*ERROR: AddressSanitizer: heap-use-after-free on address}}
17 // CHECK: {{0x.* at pc 0x.* bp 0x.* sp 0x.*}}
18 // CHECK: {{WRITE of size 1 at 0x.* thread T0}}
19 // CHECK: {{ #0 0x.* in main .*use-after-free-right.cc:}}[[@LINE-4]]
20 // CHECK: {{0x.* is located 0 bytes inside of 1-byte region .0x.*,0x.*}}
21 // CHECK: {{freed by thread T0 here:}}
22
23 // CHECK-Linux: {{ #0 0x.* in .*free}}
24 // CHECK-Linux: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-10]]
25
26 // CHECK-Darwin: {{ #0 0x.* in wrap_free}}
27 // CHECK-Darwin: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-13]]
28
29 // CHECK: {{previously allocated by thread T0 here:}}
30
31 // CHECK-Linux: {{ #0 0x.* in .*malloc}}
32 // CHECK-Linux: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-19]]
33
34 // CHECK-Darwin: {{ #0 0x.* in wrap_malloc.*}}
35 // CHECK-Darwin: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-22]]
36 }
37