Summary:
The existing cpp-level checks using PR_MPX_ENABLE_MANAGEMENT aren't sufficient,
as this isn't defined for linux kernel versions below 3.19.
Reviewers: valentinagiusti, zturner, labath
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D32719
llvm-svn: 302027
int
main(int argc, char const *argv[])
{
+// PR_MPX_ENABLE_MANAGEMENT won't be defined on linux kernel versions below 3.19
+#ifndef PR_MPX_ENABLE_MANAGEMENT
+ return -1;
+#endif
+
// This call returns 0 only if the CPU and the kernel support Intel(R) MPX.
if (prctl(PR_MPX_ENABLE_MANAGEMENT, 0, 0, 0, 0) != 0)
return -1;
unsigned int rax, rbx, rcx, rdx;
int array[5];
+// PR_MPX_ENABLE_MANAGEMENT won't be defined on linux kernel versions below 3.19
+#ifndef PR_MPX_ENABLE_MANAGEMENT
+ return -1;
+#endif
+
// This call returns 0 only if the CPU and the kernel support Intel(R) MPX.
if (prctl(PR_MPX_ENABLE_MANAGEMENT, 0, 0, 0, 0) != 0)
return -1;