vendor/lldb/lldb-trunk-r321017

1 files changed, 49 insertions, 0 deletions

diff --git a/tools/intel-features/intel-mpx/test/main.cpp b/tools/intel-features/intel-mpx/test/main.cpp
new file mode 100644
index 0000000000000..110befb1e2501
--- /dev/null
+++ b/tools/intel-features/intel-mpx/test/main.cpp
@@ -0,0 +1,49 @@
+//===-- main.cpp ------------------------------------------------*- C++ -*-===//
+////
+////                     The LLVM Compiler Infrastructure
+////
+//// This file is distributed under the University of Illinois Open Source
+//// License. See LICENSE.TXT for details.
+////
+////===----------------------------------------------------------------------===//
+//
+
+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;
+}