File: main.cpp

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-6~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,418,812 kB
  • sloc: cpp: 5,290,827; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,900; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,892; xml: 953; cs: 573; fortran: 539
file content (39 lines) | stat: -rw-r--r-- 886 bytes parent folder | download | duplicates (23) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
 
const int size = 5;

#include <cstddef>
#include <cstdlib>
#include <sys/prctl.h>

void func(int *ptr) {
  int *tmp;

#if defined  __GNUC__ && !defined __INTEL_COMPILER
  __builtin___bnd_store_ptr_bounds ((void**)&ptr, ptr);
#endif
  tmp = ptr + size - 1;
#if defined  __GNUC__ && !defined __INTEL_COMPILER
  __builtin___bnd_store_ptr_bounds ((void**)&tmp, tmp);
#endif
  tmp = (int*)0x2; // Break 2.

  return; // Break 3.
}

int
main(int argc, char const *argv[])
{
  // This call returns 0 only if the CPU and the kernel support
  // Intel(R) Memory Protection Extensions (Intel(R) MPX).
  if (prctl(PR_MPX_ENABLE_MANAGEMENT, 0, 0, 0, 0) != 0)
        return -1;

  int*  a = (int *) calloc(size, sizeof(int));
#if defined  __GNUC__ && !defined __INTEL_COMPILER
  __builtin___bnd_store_ptr_bounds ((void**)&a, a);
#endif
  func(a); // Break 1.

  free(a); // Break 4.

  return 0;
}