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 #include <stdlib.h> 9 int main() { 10 char *x = (char*)malloc(10 * sizeof(char)); 11 free(x); 12 return x[5]; 13 // CHECK: {{.*ERROR: AddressSanitizer: heap-use-after-free on address}} 14 // CHECK: {{0x.* at pc 0x.* bp 0x.* sp 0x.*}} 15 // CHECK: {{READ of size 1 at 0x.* thread T0}} 16 // CHECK: {{ #0 0x.* in main .*use-after-free.cc:}}[[@LINE-4]] 17 // CHECK: {{0x.* is located 5 bytes inside of 10-byte region .0x.*,0x.*}} 18 // CHECK: {{freed by thread T0 here:}} 19 20 // CHECK-Linux: {{ #0 0x.* in .*free}} 21 // CHECK-Linux: {{ #1 0x.* in main .*use-after-free.cc:}}[[@LINE-10]] 22 23 // CHECK-Darwin: {{ #0 0x.* in wrap_free}} 24 // CHECK-Darwin: {{ #1 0x.* in main .*use-after-free.cc:}}[[@LINE-13]] 25 26 // CHECK: {{previously allocated by thread T0 here:}} 27 28 // CHECK-Linux: {{ #0 0x.* in .*malloc}} 29 // CHECK-Linux: {{ #1 0x.* in main .*use-after-free.cc:}}[[@LINE-19]] 30 31 // CHECK-Darwin: {{ #0 0x.* in wrap_malloc.*}} 32 // CHECK-Darwin: {{ #1 0x.* in main .*use-after-free.cc:}}[[@LINE-22]] 33 // CHECK: Shadow byte legend (one shadow byte represents 8 application bytes): 34 // CHECK: Global redzone: 35 // CHECK: ASan internal: 36 } 37