1*673dc3d4SNico Weber // Test max_redzone runtime option.
2*673dc3d4SNico Weber 
3*673dc3d4SNico Weber // RUN: %clangxx_asan -O0 %s -o %t && %env_asan_opts=max_redzone=32 %run %t 0 2>&1
4*673dc3d4SNico Weber // RUN: %clangxx_asan -O0 %s -o %t && %run %t 1 2>&1
5*673dc3d4SNico Weber // RUN: %clangxx_asan -O3 %s -o %t && %env_asan_opts=max_redzone=32 %run %t 0 2>&1
6*673dc3d4SNico Weber // RUN: %clangxx_asan -O3 %s -o %t && %run %t 1 2>&1
7*673dc3d4SNico Weber 
8*673dc3d4SNico Weber #include <stdio.h>
9*673dc3d4SNico Weber #include <stdlib.h>
10*673dc3d4SNico Weber #include <stdint.h>
11*673dc3d4SNico Weber #include <sanitizer/allocator_interface.h>
12*673dc3d4SNico Weber 
main(int argc,char ** argv)13*673dc3d4SNico Weber int main(int argc, char **argv) {
14*673dc3d4SNico Weber   if (argc < 2)
15*673dc3d4SNico Weber     return 1;
16*673dc3d4SNico Weber   bool large_redzone = atoi(argv[1]);
17*673dc3d4SNico Weber   size_t before = __sanitizer_get_heap_size();
18*673dc3d4SNico Weber   void *pp[10000];
19*673dc3d4SNico Weber   for (int i = 0; i < 10000; ++i)
20*673dc3d4SNico Weber     pp[i] = malloc(4096 - 64);
21*673dc3d4SNico Weber   size_t after = __sanitizer_get_heap_size();
22*673dc3d4SNico Weber   for (int i = 0; i < 10000; ++i)
23*673dc3d4SNico Weber     free(pp[i]);
24*673dc3d4SNico Weber   size_t diff = after - before;
25*673dc3d4SNico Weber   return !(large_redzone ? diff > 46000000 : diff < 46000000);
26*673dc3d4SNico Weber }
27