28 lines · cpp
1// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s2// RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s3// RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s4// RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s5// REQUIRES: stable-runtime6 7// Test use-after-free report in the case when access is at the right border of8// the allocation.9 10#include <stdlib.h>11int 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