1 // Check that we fill malloc-ed memory correctly.
2 // RUN: %clangxx_hwasan %s -o %t
3 // RUN: %run %t | FileCheck %s --check-prefix=CHECK-0
4 // RUN: %env_hwasan_opts=max_malloc_fill_size=20 %run %t | FileCheck %s --check-prefix=CHECK-20-be
5 // RUN: %env_hwasan_opts=max_malloc_fill_size=0:malloc_fill_byte=8 %run %t | FileCheck %s --check-prefix=CHECK-0
6 // RUN: %env_hwasan_opts=max_malloc_fill_size=10:malloc_fill_byte=8 %run %t | FileCheck %s --check-prefix=CHECK-10-8
7 // RUN: %env_hwasan_opts=max_malloc_fill_size=20:malloc_fill_byte=171 %run %t | FileCheck %s --check-prefix=CHECK-20-ab
8 
9 #include <stdio.h>
10 
11 int main(int argc, char **argv) {
12   // With asan allocator this makes sure we get memory from mmap.
13   static const int kSize = 1 << 25;
14   unsigned char *x = new unsigned char[kSize];
15   printf("-");
16   for (int i = 0; i <= 32; i++) {
17     printf("%02x", x[i]);
18   }
19   printf("-\n");
20   delete [] x;
21 }
22 
23 // CHECK-0: -000000000000000000000000000000000000000000000000000000000000000000-
24 // CHECK-20-be: -bebebebebebebebebebebebebebebebebebebebe00000000000000000000000000-
25 // CHECK-10-8: -080808080808080808080000000000000000000000000000000000000000000000-
26 // CHECK-20-ab: -abababababababababababababababababababab00000000000000000000000000-
27