src/libcompiler_builtins/compiler-rt/test/scudo/random_shuffle.cpp

   1 // RUN: %clang_scudo %s -o %t
   2 // RUN: rm -rf %T/random_shuffle_tmp_dir
   3 // RUN: mkdir %T/random_shuffle_tmp_dir
   4 // RUN: %run %t 100 > %T/random_shuffle_tmp_dir/out1
   5 // RUN: %run %t 100 > %T/random_shuffle_tmp_dir/out2
   6 // RUN: %run %t 10000 > %T/random_shuffle_tmp_dir/out1
   7 // RUN: %run %t 10000 > %T/random_shuffle_tmp_dir/out2
   8 // RUN: not diff %T/random_shuffle_tmp_dir/out?
   9 // RUN: rm -rf %T/random_shuffle_tmp_dir
  10 // UNSUPPORTED: i386-linux,i686-linux,arm-linux,armhf-linux
  11
  12 // Tests that the allocator shuffles the chunks before returning to the user.
  13
  14 #include <stdlib.h>
  15 #include <stdio.h>
  16
  17 int main(int argc, char **argv) {
  18   int alloc_size = argc == 2 ? atoi(argv[1]) : 100;
  19   char *base = new char[alloc_size];
  20   for (int i = 0; i < 20; i++) {
  21     char *p = new char[alloc_size];
  22     printf("%zd\n", base - p);
  23   }
  24 }