1// Test max_redzone runtime option.
2
3// RUN: %clangxx_asan -O0 %s -o %t && %env_asan_opts=max_redzone=16 %run %t 0 2>&1
4// RUN: %clangxx_asan -O0 %s -o %t && %run %t 1 2>&1
5// RUN: %clangxx_asan -O3 %s -o %t && %env_asan_opts=max_redzone=16 %run %t 0 2>&1
6// RUN: %clangxx_asan -O3 %s -o %t && %run %t 1 2>&1
7
8#include <stdio.h>
9#include <stdlib.h>
10#include <stdint.h>
11#include <sanitizer/allocator_interface.h>
12
13int main(int argc, char **argv) {
14  if (argc < 2)
15    return 1;
16  bool large_redzone = atoi(argv[1]);
17  size_t before = __sanitizer_get_heap_size();
18  void *pp[10000];
19  for (int i = 0; i < 10000; ++i)
20    pp[i] = malloc(4096 - 64);
21  size_t after = __sanitizer_get_heap_size();
22  for (int i = 0; i < 10000; ++i)
23    free(pp[i]);
24  size_t diff = after - before;
25  return !(large_redzone ? diff > 46000000 : diff < 46000000);
26}
27