1 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
2 // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
3 // RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
4 // RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
5 // REQUIRES: stable-runtime
6
7 // Test use-after-free report in the case when access is at the right border of
8 // the allocation.
9
10 #include <stdlib.h>
main()11 int main() {
12 volatile char *x = (char*)malloc(sizeof(char));
13 free((void*)x);
14 *x = 42;
15 // CHECK: {{.*ERROR: AddressSanitizer: heap-use-after-free on address}}
16 // CHECK: {{0x.* at pc 0x.* bp 0x.* sp 0x.*}}
17 // CHECK: {{WRITE of size 1 at 0x.* thread T0}}
18 // CHECK: {{ #0 0x.* in main .*use-after-free-right.cpp:}}[[@LINE-4]]
19 // CHECK: {{0x.* is located 0 bytes inside of 1-byte region .0x.*,0x.*}}
20 // CHECK: {{freed by thread T0 here:}}
21 // CHECK: {{ #0 0x.* in .*free}}
22 // CHECK: {{ #[1-3] 0x.* in main .*use-after-free-right.cpp:}}[[@LINE-9]]
23
24 // CHECK: {{previously allocated by thread T0 here:}}
25 // CHECK: {{ #0 0x.* in .*malloc}}
26 // CHECK: {{ #[1-3] 0x.* in main .*use-after-free-right.cpp:}}[[@LINE-14]]
27 }
28