view compiler-rt/test/hwasan/TestCases/malloc_fill.cpp @ 150:1d019706d866

LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
parents
children 2e18cbf3894f
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// Check that we fill malloc-ed memory correctly.
// RUN: %clangxx_hwasan %s -o %t
// RUN: %run %t | FileCheck %s
// RUN: %env_hwasan_opts=max_malloc_fill_size=10:malloc_fill_byte=8 %run %t | FileCheck %s --check-prefix=CHECK-10-8
// RUN: %env_hwasan_opts=max_malloc_fill_size=20:malloc_fill_byte=171 %run %t | FileCheck %s --check-prefix=CHECK-20-ab

#include <stdio.h>

#include "utils.h"

int main(int argc, char **argv) {
  // With asan allocator this makes sure we get memory from mmap.
  static const int kSize = 1 << 25;
  unsigned char *x = new unsigned char[kSize];
  untag_printf("-");
  for (int i = 0; i <= 32; i++) {
    untag_printf("%02x", x[i]);
  }
  untag_printf("-\n");
  delete [] x;
}

// CHECK: -bebebebebebebebebebebebebebebebebebebebebebebebebebebebebebebebebe-
// CHECK-10-8: -080808080808080808080000000000000000000000000000000000000000000000-
// CHECK-20-ab: -abababababababababababababababababababab00000000000000000000000000-