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 
main(int argc,char ** argv)13 int 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