compiler-rt/test/asan/TestCases/heap-overflow.cpp

   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 // RUN: %env_asan_opts=print_stats=1 not %run %t 2>&1 | FileCheck %s
   6
   7 // FIXME: Fix this test under GCC.
   8 // REQUIRES: Clang
   9
  10 #include <stdlib.h>
  11 #include <string.h>
  12 int main(int argc, char **argv) {
  13   char *x = (char*)malloc(10 * sizeof(char));
  14   memset(x, 0, 10);
  15   int res = x[argc * 10];  // BOOOM
  16   // CHECK: {{READ of size 1 at 0x.* thread T0}}
  17   // CHECK: {{    #0 0x.* in main .*heap-overflow.cpp:}}[[@LINE-2]]
  18   // CHECK: {{0x.* is located 0 bytes after 10-byte region}}
  19   // CHECK: {{allocated by thread T0 here:}}
  20
  21   // CHECK: {{    #0 0x.* in .*malloc}}
  22   free(x);
  23   return res;
  24 }