src/compiler-rt/test/asan/TestCases/use-after-free.cc

   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 }