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 // Test use-after-free report in the case when access is at the right border of 8 // the allocation. 9 10 #include <stdlib.h> 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.cc:}}[[@LINE-4]] 19 // CHECK: {{0x.* is located 0 bytes inside of 1-byte region .0x.*,0x.*}} 20 // CHECK: {{freed by thread T0 here:}} 21 22 // CHECK-Linux: {{ #0 0x.* in .*free}} 23 // CHECK-Linux: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-10]] 24 25 // CHECK-Darwin: {{ #0 0x.* in wrap_free}} 26 // CHECK-Darwin: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-13]] 27 28 // CHECK: {{previously allocated by thread T0 here:}} 29 30 // CHECK-Linux: {{ #0 0x.* in .*malloc}} 31 // CHECK-Linux: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-19]] 32 33 // CHECK-Darwin: {{ #0 0x.* in wrap_malloc.*}} 34 // CHECK-Darwin: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-22]] 35 } 36
