compiler-rt/test/scudo/random_shuffle.cpp

   1 // RUN: %clangxx_scudo %s -o %t
   2 // RUN: rm -rf %t-dir/random_shuffle_tmp_dir
   3 // RUN: mkdir -p %t-dir/random_shuffle_tmp_dir
   4 // RUN: %run %t 100 > %t-dir/random_shuffle_tmp_dir/out1
   5 // RUN: %run %t 100 > %t-dir/random_shuffle_tmp_dir/out2
   6 // RUN: %run %t 10000 > %t-dir/random_shuffle_tmp_dir/out1
   7 // RUN: %run %t 10000 > %t-dir/random_shuffle_tmp_dir/out2
   8 // RUN: not diff %t-dir/random_shuffle_tmp_dir/out?
   9 // RUN: rm -rf %t-dir/random_shuffle_tmp_dir
  10
  11 // Tests that the allocator shuffles the chunks before returning to the user.
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15
  16 int main(int argc, char **argv) {
  17   int alloc_size = argc == 2 ? atoi(argv[1]) : 100;
  18   char *base = new char[alloc_size];
  19   for (int i = 0; i < 20; i++) {
  20     char *p = new char[alloc_size];
  21     printf("%zd\n", base - p);
  22   }
  23 }