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//===-- main.cpp ------------------------------------------------*- C++ -*-===//
////
//// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
//// See https://llvm.org/LICENSE.txt for license information.
//// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
////
////===----------------------------------------------------------------------===//
//
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;
}
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