compiler-rt/test/asan/TestCases/malloc_fill.cpp

   1 // Check that we fill malloc-ed memory correctly.
   2 // RUN: %clangxx_asan %s -o %t
   3 // RUN: %run %t | FileCheck %s
   4 // RUN: %env_asan_opts=max_malloc_fill_size=10:malloc_fill_byte=8 %run %t | FileCheck %s --check-prefix=CHECK-10-8
   5 // RUN: %env_asan_opts=max_malloc_fill_size=20:malloc_fill_byte=171 %run %t | FileCheck %s --check-prefix=CHECK-20-ab
   6
   7 #include <stdio.h>
   8 int main(int argc, char **argv) {
   9   // With asan allocator this makes sure we get memory from mmap.
  10   static const int kSize = 1 << 25;
  11   unsigned char *x = new unsigned char[kSize];
  12   printf("-");
  13   for (int i = 0; i <= 32; i++) {
  14     printf("%02x", x[i]);
  15   }
  16   printf("-\n");
  17   delete [] x;
  18 }
  19
  20 // CHECK: -bebebebebebebebebebebebebebebebebebebebebebebebebebebebebebebebebe-
  21 // CHECK-10-8: -080808080808080808080000000000000000000000000000000000000000000000-
  22 // CHECK-20-ab: -abababababababababababababababababababab00000000000000000000000000-